WO2007049745A1 - Information recording medium, information recording device and method, and computer program - Google Patents

Information recording medium, information recording device and method, and computer program Download PDF

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Publication number
WO2007049745A1
WO2007049745A1 PCT/JP2006/321499 JP2006321499W WO2007049745A1 WO 2007049745 A1 WO2007049745 A1 WO 2007049745A1 JP 2006321499 W JP2006321499 W JP 2006321499W WO 2007049745 A1 WO2007049745 A1 WO 2007049745A1
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WO
WIPO (PCT)
Prior art keywords
recording
information
area
control method
recorded
Prior art date
Application number
PCT/JP2006/321499
Other languages
French (fr)
Japanese (ja)
Inventor
Kazuo Kuroda
Tsuyoshi Hasebe
Tsuyoshi Namiki
Masayoshi Yoshida
Shinji Suzuki
Masahiro Kato
Original Assignee
Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation filed Critical Pioneer Corporation
Priority to JP2007542685A priority Critical patent/JPWO2007049745A1/en
Publication of WO2007049745A1 publication Critical patent/WO2007049745A1/en

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B20/1258—Formatting, e.g. arrangement of data block or words on the record carriers on discs where blocks are arranged within multiple radial zones, e.g. Zone Bit Recording or Constant Density Recording discs, MCAV discs, MCLV discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24073—Tracks
    • G11B7/24082—Meandering
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1238—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located
    • G11B2020/1239—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc track, i.e. the entire a spirally or concentrically arranged path on which the recording marks are located the track being a pregroove, e.g. the wobbled track of a recordable optical disc
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1242—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
    • G11B2020/1244—CAV zone, in which a constant angular velocity is used
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
    • G11B2020/1218—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc
    • G11B2020/1242—Formatting, e.g. arrangement of data block or words on the record carriers on discs wherein the formatting concerns a specific area of the disc the area forming one or more zones, wherein each zone is shaped like an annulus or a circular sector
    • G11B2020/1245—CLV zone, in which a constant linear velocity is used
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1265—Control data, system data or management information, i.e. data used to access or process user data
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs

Definitions

  • Information recording medium information recording apparatus and method, and computer program
  • the present invention relates to an information recording medium such as an optical disc that can be recorded and reproduced by irradiating laser light such as a DVD (Digital Versatile Disc), a BD (Blu-ray Disc), and a CD (Compact Disc).
  • the present invention relates to an information recording apparatus and method for the information recording medium, and a technical field of a computer program. Background art
  • DVD video content (hereinafter referred to as “encryption” as appropriate) is disclosed in Patent Document 1 and the like, in which encrypted information is recorded in advance on a record-type information recording medium such as a DVD—RZRW and sold.
  • a distribution system that distributes "content”).
  • This distribution system uses information recording media that have the same physical structure as conventional recording media such as DVD-RZRW.
  • the CLV (Constant Linear Velocity) control method is used in the management area such as the control data zone in the recording type information recording medium in which wobbles for obtaining the rotational speed control signal for recording are formed.
  • Encrypted information applied to read-only information recording media such as DVD-ROM is pre-recorded before sales.
  • the CLV control method is a rotational speed control method in which the linear velocity is constant when information is recorded on an optical disk.
  • the CAV (Constant Angular Velocity) control method is a rotational speed control method in which the angular velocity is constant, that is, the rotational speed per unit time is constant when information is recorded on the optical disc.
  • Patent Document 3 discloses a technique relating to the data structure of the file system on the hybrid optical disk.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2001-307427
  • Patent Document 2 Japanese Patent Laid-Open No. 2001-357001
  • Patent Document 3 Japanese Patent Laid-Open No. 2003-272309
  • Patent Document 4 Japanese Patent Laid-Open No. 2000-331412
  • Non-Patent Document 1 “DVD Content Protection” Toshiba Review Vol.58, No6 (2003)
  • the present invention has been made in view of the above-described problems, for example, and it is possible to appropriately realize copyright protection of recorded information such as content in a no-information type information recording medium.
  • the information recording medium of the present invention is capable of detecting at least one of clock information (Wobble) and address information (LPP) for recording or reproducing the recorded information.
  • a part of the recording information can be recorded by a first rotational speed control method (for example, CAV or zone CAV), and the second recording area is pre-recorded by a second rotational speed control method (CLV).
  • a first rotational speed control method for example, CAV or zone CAV
  • CLV second rotational speed control method
  • the relationship between the radial position and the address in the second recording area is formatted so that the first recording area does not exist and the control information is programmed by the second rotation control method (CLV).
  • CLV second rotation control method
  • the information recording medium of the present invention in the first recording area, for example, clock information based on wobbling of a recording track, and land information, for example, for recording or reproducing the recording information.
  • Detectable control information that is at least one of address information such as pre-pit (Land Pre Pit) is not preformatted.
  • the recorded information is recorded under a first rotational speed control method (CAV) such as a CAV control method. Part can be recorded, or pre-recorded in advance.
  • CAV rotational speed control method
  • first recording areas located at least on the inner circumference side of the first recording area described above.
  • this control information is preformatted.
  • at least a part of the second recording area that occupies most of the recording area such as the data area is recorded in addition to the recording information under the second rotational speed control method (CLV) such as the CLV control method.
  • CLV second rotational speed control method
  • the first rotation speed control method and the second rotation speed control method (CLV) are, for example, a zone CAV in which the speed is simply changed stepwise according to the radial position, and a normal CAV. Partially different rotational speed control methods may be used.
  • a playback device that is set to one rotation control method such as CLV and CAV has a rotation control method that is entirely different to the extent that an information recording medium recorded by the other rotation control method cannot be played back. May be.
  • a general commercially available information recording apparatus can record recorded information only on an information recording medium such as an optical disc, for example, under a second rotational speed control method (CLV) such as a CLV control method. is there. Therefore, for example, the first rotation speed control method (CAV).
  • CLV rotational speed control method
  • CAV first rotation speed control method
  • the relationship between the radial position and the address in the second recording area is such that the first recording area does not exist and the control information is preformatted by the second rotation control method (CLV).
  • the predetermined relationship between the radial position and the address is substantially the same.
  • “substantially the same” according to the invention may mean that they are completely the same, and may be equivalent to the extent that they fall within a predetermined allowable range.
  • this boundary point may be a position indicating the boundary between the first method area and the second method area, or a position indicating the boundary between the first recording area and the second recording area. Also good.
  • the information recording medium that is the electronic distribution destination and the target of the copying is the power of being a legitimate recording type information recording medium or It is possible to more easily and accurately identify whether the information recording medium has been illegally copied.
  • a recording type information recording medium for example, a part of recorded information pre-recorded in the first recording area in advance by a commercially available information recording apparatus may be altered to unintended information. Almost or completely impossible. For example, unintended information such as illegal encryption key information can be recorded almost or completely in the first recording area.
  • a general mastering device that manufactures an information recording medium provided with a second recording area for recording the recording information by the second rotational speed control method in which control information such as wobble is preformatted in the entire recording area
  • control information such as wobble
  • a general mastering device preformats control information with an amplitude of zero in order to form a first recording area for recording information by the first rotational speed control method (CAV).
  • the first rotational speed control system is a rotational speed control system in which the angular speed is constant at least in a certain section
  • the second rotational speed control system is a rotational speed control method in which the linear velocity is constant.
  • the first method area (or the first recording area) and the second method area (or the second recording area) are based on the rotational speed control method in which the angular velocity or the linear velocity is constant. It is possible to make the boundary address at the boundary point between and discontinuous or continuous with higher accuracy.
  • a first method area recorded by the first rotation speed control method (CAV) and a second method recorded by the second rotation speed control method At the boundary point with the method area, the predetermined position between the radial position and the address when the control information is preformatted by the rotation control method (CLV) in which the linear velocity is constant is used. Satisfy the relationship.
  • the rotation control is performed so that the boundary velocity at the boundary point between the first method area (or the first recording area) and the second method area (or the second recording area) is a constant linear velocity.
  • CLV the method
  • a part of the recording information includes the first recording area and the second recording area based on the first rotational speed control method (CAV). It is recorded across.
  • CAV rotational speed control method
  • the information recording apparatus described later acquires clock information and address information in the second recording area having a predetermined length in which control information such as wobble is preformatted. It is possible to synchronize (lock) with the recording clock held by the information recording apparatus. As a result, the information recording apparatus described later records a part of the recording information in the second recording area with higher accuracy in addition to the first recording area based on the first rotational speed control method (CAV). It is possible.
  • CAV rotational speed control method
  • the boundary points have a continuous physical recording unit in a recording area positioned before and after the boundary point.
  • the tracking servo is stabilized and the servo characteristics are improved when a recording or reproducing process is performed by an information recording apparatus described later. It is possible to make it.
  • the “physical recording unit” according to the present invention may mean a recording unit capable of defining a data amount such as wobble.
  • the physical recording units in the recording area located before and after the boundary point are discontinuous.
  • the first method area (or the first recording area) and the second data area are based on the fact that it is not a delimiter of a predetermined amount of data (for example, one ECC block or one sector) corresponding to the physical recording unit.
  • the boundary address at the boundary point with the method area (or the second recording area) can be made discontinuous with higher accuracy.
  • the physical recording unit is a recording unit capable of correcting an error code.
  • the physical recording unit may be configured to be a recording unit to which a minimum address is allocated.
  • the first method area (or the first recording area) and the second method area are based on the fact that the minimum address as the physical recording unit is not a division of the recording unit. It is possible to make the boundary address at the boundary point with (or the second recording area) discontinuous with higher accuracy. Furthermore, in general information recording and playback devices, ECC errors are likely to be induced at this boundary point, so that illegal recording or playback processing that does not conform to the copyright protection system can be prevented more effectively. It is.
  • a recording or reproducing process is performed by an information recording device described later. It is possible to stabilize the tracking servo and improve the servo characteristics when processing is performed.
  • the boundary address (sector address) of the first system area and the boundary address (pre-address) of the second system area are continuous. do not do.
  • the second recording area is located at a position away from the boundary point by a predetermined length (16ECC), in addition to the first rotational speed control method, or instead.
  • a buffer area capable of recording the recording information by the second rotational speed control method is provided.
  • an error in time accuracy of the recording clock due to, for example, a crystal constituting a reference clock signal generator for generating a recording clock
  • the buffer area can absorb the deviation of the recording or reproducing position indicated by the address based on the positional accuracy error due to the variation of the track pitch on the signal surface of the information recording medium.
  • the data amount of the buffer area may be a predetermined amount (200ECC).
  • the buffer area such as the 200 ECC block, for example, more appropriately absorbs the deviation in the recording or reproduction position indicated by the address based on the positional accuracy error by the buffer area. Is possible.
  • predetermined data in the first recording area (no wobble section), predetermined data (FS, dummy data, encrypted information, and other information) is further provided. Pre-recorded.
  • predetermined data such as a disc key (encrypted information) of the DVD content is pre-recorded, for example. It is possible to enjoy various effects. That is, a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in a first recording area in which predetermined data such as a disc key is pre-recorded.
  • a general information recording / reproducing apparatus is substantially the same as the reproduction-only information recording medium such as a DVD-ROM that is not distinguished from the reproduction-only information recording medium. It is possible to execute special programs such as applications that support playback-only information recording media.
  • special program according to the present invention.
  • a predetermined program pre-recorded in the first recording area such as a program for reproducing recorded information such as a DVD content while decrypting it.
  • This special program may be pre-recorded in the first recording area, or may be recorded in a recording area other than the first recording area.
  • the wobble signal can be detected as the clock information described above, so that general recording processing can be performed.
  • control information such as clock information is not pre-formatted in the first recording area
  • a valid encryption system is used by a general information recording device.
  • Predetermined data force such as encryption information based on, almost never or completely being overwritten or altered by unintended illegal information.
  • a judgment area for judging whether or not power to permit playback of recorded information is first accessed. Area
  • the conventional player since the wobble is not pre-formatted in the first recording area, the conventional player (general information recording / reproducing device) cannot detect the wobble. Therefore, the general information recording / reproducing device reproduces at least the judgment area.
  • the information recording medium of the present invention cannot be distinguished from a general reproduction-only information recording medium such as a DVD-ROM.
  • the conventional reproducing apparatus can perform the reproducing process on the information recording medium of the present invention in the same manner as a general reproduction-only information recording medium.
  • the first recording area is further included in, for example, a user data area in which recording information can be recorded by a user
  • the following effects can be obtained. That is, a conventional player (general information recording / reproducing device) cannot detect a wobble signal as clock information in, for example, a first recording area in which title information of a DVD content is recorded. Accordingly, a general information recording / reproducing apparatus is generally similar to a reproduction-only information recording medium that is not distinguished from a reproduction-only information recording medium such as a DVD-ROM. Playback resume processing (resume processing) can be performed.
  • the “reproduction resume process (resume process)” is an information reproducing apparatus such as a DVD player, for example, during the reproduction process of the information recording medium.
  • the process of replaying the recorded information such as the content being replayed from the middle of the replay is performed again. means.
  • the information reproducing apparatus firstly (1) an address indicating the reproduction position of the recorded information that was reproduced at the moment when the information recording medium was removed during reproduction; (2) Recorded information during playback, such as title information of recorded information, or (3) a data string indicating a predetermined position existing at the beginning of the user data area. Is stored in storage means such as an internal memory. Next, when the information recording medium is inserted again, the information reproducing apparatus records, for example, specific information such as title information, and (i) a wobble signal is detected as clock information. Whether or not (ii) the ability to reproduce the specific information.
  • the information reproducing apparatus (i) when a wobble signal is not detected as clock information in an area where the specific information is recorded, or (ii) when specific information such as title information can be reproduced, Playback can be resumed from the vicinity of the address indicating the playback position of the recorded information that is stored.
  • the predetermined data may be configured to be encryption key information for encrypting recorded information.
  • the predetermined data may be configured to be pre-recorded at least in the user data area.
  • the information recording apparatus of the present invention will be described below.
  • an information recording apparatus of the present invention is an information recording apparatus for recording the recording information on the above-described information recording medium of the present invention (including various aspects).
  • Recording means for recording the recording information setting means for setting the first rotational speed control method (CAV) or the second rotational speed control method (CLV) at the time of recording, and the second recording area
  • the recording means is controlled so as to record the other part of the recording information from the start position separated from the boundary point by a predetermined length (16ECC) by the set second rotational speed control method (CLV).
  • the boundary position force in the second recording area is also separated by a predetermined length (for example, 16ECC) by the recording means.
  • a predetermined length for example, 16ECC
  • the other part of the recorded information is recorded with an improved SN ratio.
  • the recording means applies the first rotational speed control method (CAV) from the first recording area to the second recording area to at least the start position. Based on this, a part of the recorded information is recorded.
  • CAV first rotational speed control method
  • control information such as wobble is preformatted, and in the second recording area of a predetermined length, clock information and address information are acquired and synchronized with the recording clock held by the information recording apparatus. It is possible to lock (lock).
  • the information recording device records a part of the recorded information in the second recording area with higher accuracy in addition to the first recording area. Is possible.
  • the information recording apparatus of the present invention can also adopt various aspects. [0060] (Information recording method)
  • an information recording method of the present invention includes an information recording medium for recording the recording information on the above-described information recording medium of the present invention (including various aspects).
  • An information recording method in a recording apparatus comprising: a recording unit configured to record the recording information on the information recording medium according to any one of claims 1 to 15; During recording, a setting step for setting the first rotational speed control method (CA V) or the second rotational speed control method (CLV) and a predetermined length (16 ECC) from the boundary point in the second recording area A first control step of controlling the recording means so as to record the other part of the recording information from the starting position separated by a second rotational speed control method (CLV), and the first control step; From the recording area to the second recording area A second control step of controlling the recording means so as to record a part of the recording information by the set first rotational speed control method (CAV) at least up to the start position. .
  • CA V first rotational speed control method
  • CLV second rotational speed control method
  • 16 ECC predetermined length
  • the information recording method of the present invention can also adopt various aspects.
  • a computer program for recording control of the present invention is a recording for controlling a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof).
  • a computer program for control which causes the computer to function as at least part of the recording unit, the setting unit, the first control unit, and the second control unit.
  • the computer program of the present invention if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Or the combination If the user program is executed after being downloaded to a computer via communication means, the above-described information recording apparatus of the present invention can be realized relatively easily.
  • a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Or the combination If the user program is executed after being downloaded to a computer via communication means, the above-described information recording apparatus of the present invention can be realized relatively easily.
  • each computer program of the present invention can also adopt various aspects.
  • a computer program product in a computer-readable medium can be executed by a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof).
  • the program instruction is clearly embodied, and the computer is caused to function as at least part of the recording means, the setting means, the first control means, and the second control means.
  • the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or
  • a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product
  • the computer program product which is a transmission wave
  • the computer program product may comprise a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above.
  • another information recording medium of the present invention has detectable control information that is at least one of clock information and address information for recording or reproducing the recorded information.
  • a part of the recording information can be recorded, and the second recording area is preformatted with control information based on the second rotational speed control method, and sandwiches the first recording area existing at a predetermined position 2
  • the relationship between the radial position and the address in each of the two second recording areas is that the first recording area does not exist and the control information is pre-formed by the second rotation control method (CLV).
  • CLV second rotation control method
  • an information recording medium of the present invention for example, based on address discontinuity or continuity at a boundary point between a first recording area and two second recording areas sandwiching the first recording area. ! /, For example, whether the information recording medium that is the electronic distribution destination and to be copied is a legitimate recording type information recording medium or an illegally copied information recording medium Can be identified more easily and with high accuracy.
  • a part of the recording information is based on the first rotation speed control method (CAV), and the first recording area and the second recording area
  • the physical recording units in the recording area located before and after the boundary point with the formula area are continuous.
  • the electronic distribution destination and the copy it is possible to more easily and accurately identify whether the information recording medium to be performed is a legitimate recording type information recording medium or an information recording medium on which illegal copying has been performed. Is possible.
  • a part of the recording information is based on the first rotation speed control method (CAV) and the first recording area and the second recording area
  • the physical recording units in the recording area located before and after the boundary with the formula area are not continuous.
  • the electronic distribution destination and the copy line can be identified simply and with high accuracy as to whether the information recording medium is a legitimate recording type information recording medium or an illegally copied information recording medium. Is possible. [0077]
  • the first recording area and the second recording area are provided.
  • a part of recording information such as encrypted information that can be recorded in the first recording area, that is, a secure state. Therefore, it becomes almost or completely impossible to create or manufacture a recording type information recording medium in which a part of the recording information such as encryption key information is illegally copied.
  • a recording means for example, it becomes possible to keep a part of the recording information such as encrypted information that can be recorded in the first recording area highly confidential, that is, to be in a secure state. Therefore, it becomes almost or completely impossible to create or manufacture a record-type information recording medium in which a part of recorded information such as encrypted information is illegally copied.
  • the information recording apparatus is used as the information recording medium described above, for example, Therefore, it is possible to maintain a high confidentiality of a part of the recording information such as encrypted information that can be recorded in the first recording area, that is, to secure the information. Therefore, it becomes almost or completely impossible to create or manufacture a recording-type information recording medium in which a part of recording information such as encrypted information is illegally copied.
  • FIG. 1 is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to an embodiment of an information recording medium of the present invention, and a radial direction associated with the schematic plan view.
  • FIG. 2 is a schematic conceptual diagram of a recording area structure in a direction.
  • FIG. 2 is a partially enlarged perspective view of a recording surface of an optical disc according to an embodiment of the information recording medium of the present invention.
  • FIG. 3 is a conceptual graph showing the relationship between a recording area of an optical disc according to an embodiment of the information recording medium of the present invention and an address that can specify the position of the recording area.
  • FIG. 4 is a diagram showing clock information and address information necessary for recording that can be obtained with a groove track wobbling force in an optical disc according to an embodiment of the information recording medium of the present invention.
  • One and other conceptual diagrams Figs. 4 (a) to 4 (d)).
  • ⁇ 5 Schematic one and other showing the wobble signal obtained for the first recording area force in one and other specific examples of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention It is a conceptual diagram (Fig. 5 (a) to Fig. 5 (d)).
  • FIG. 6 Recording area of wobbled section, which is a specific example of the first recording area of the present invention, and recording section of wobble, which is a specific example of the second recording area of the present invention. It is a schematic diagram which shows notionally the arrangement
  • FIG. 7 is a conceptual diagram schematically showing various characteristics when a CAV control method is applied to a general optical disc.
  • FIG. 8 is a conceptual diagram schematically showing various characteristics of a general optical disc when the CLV control method is applied.
  • FIG. 9 A schematic diagram schematically comparing the wobble wavelength when the CAV control method is applied to the wobble wavelength when the CLV control method is applied to a general optical disc (Fig. 9).
  • 9 (a)) is a conceptual diagram schematically showing the relationship between the wobble wavelength and 1ECC block in a general optical disc.
  • FIG. 10 One graph (Fig. 10 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the address, as well as the first method area of the present invention, and Fig. 10 (b) is a graph schematically showing the relationship between the second method area and the rotation speed of the information recording medium. [11] The first method area and the second method area of the present invention , Another graph schematically showing the relationship with the address (FIG. 11 (a)), and the relationship between the first method area and the second method area of the present invention and the rotational speed of the information recording medium. Is another graph ( Figure 11 (b))
  • FIG. 12 is a block diagram showing an overall configuration of an information recording / reproducing apparatus according to the information recording apparatus of the present invention.
  • FIG. 13 is a flowchart showing the pre-recording operation principle in the pre-recording apparatus 200 according to the present embodiment.
  • FIG. 14 is a schematic diagram of the recording area shown in FIG. 14 (FIG. 14 (a) to FIG. 14 (b)).
  • FIG. 16 is a block diagram showing an overall configuration of an information recording apparatus that performs a recording operation and an information distribution apparatus that performs a distribution operation on the information recording medium of the present invention.
  • FIG. 17 is a flowchart showing various processes in the information recording apparatus and information distribution apparatus of the present invention.
  • FIG. 18 A graph (FIG. 18 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the rotational speed of the information recording medium, and the present invention
  • FIG. 19 is a schematic diagram (FIG. 18 (b)) schematically showing the relationship between addresses in the first method area and the second method area.
  • FIG. 19 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • FIG. 20 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • FIG. 21 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • FIG. 1 is a schematic plan view showing the basic structure of an optical disc having a plurality of recording areas according to an embodiment of the information recording medium of the present invention, and the radial direction associated with the schematic plan view.
  • FIG. 2 is a schematic conceptual diagram of a recording area structure in FIG.
  • FIG. 2 is a partially enlarged perspective view on the recording surface of the optical disc according to the embodiment of the information recording medium of the present invention.
  • the optical disc 100 is, for example, (i) power calibration area according to the present embodiment centered on the center hole 1 on the recording surface of the disc main body having a diameter of about 12 cm as in the DVD.
  • PCA (ii) Recording Management Area RMA, (iii) Control Data Zone Lead-in area 101 with CDZ, (iv) Data area 102, (V) Lead-out area 103 It is configured with.
  • at least one recording layer is laminated on a transparent substrate (not shown) of the optical disc 100, for example.
  • tracks 50 such as a groove track and a land track are alternately provided in a spiral shape or a concentric shape with the center hole 1 as the center.
  • ECC (Error Correction Code) block 51 is a record information management unit capable of error correction of record information.
  • the optical disc according to the present embodiment is a so-called no-briddle type optical disc having both a recording area in a recordable information recording medium and a read-only area (playback-only area) in a read-only information recording medium. There may be.
  • the first recording area of the present invention may be provided on the inner periphery of the data area. A detailed description of the first recording area of the present invention will be described later.
  • the optical disc 100 is located below the disc-like transparent substrate 106, and thus the dye type or phase change constituting the information recording surface.
  • a recording layer 107 of a mold is laminated, and a reflective layer 108 is further laminated on the lower side.
  • Groove tracks GT and land tracks LT are alternately formed on the information recording surface, which is the surface force of the recording layer 107.
  • the laser beam LB is irradiated onto the groove track GT through the transparent substrate 106 as shown in FIG.
  • recording is performed on the recording layer 107 according to the recording data by irradiating the laser beam LB with the recording laser power.
  • the recording data recorded on the recording layer 107 is read by irradiating the laser beam LB with a reproduction laser power weaker than the recording laser power.
  • the groove track GT, land track LT, wobble 109, land pre-pit LPP, etc. will be described in detail later.
  • encryption information such as a title key based on an encryption system such as CSS, and encryption key content encrypted by the encryption key information such as the title key.
  • encryption key information such as a title key is encrypted with encryption key information such as a disk key or a disk key set.
  • the present invention is not particularly limited to an optical disc having such five areas.
  • the lead-in area 101 or the lead-out area 103 may be further subdivided.
  • FIG. 3 is a conceptual graph showing the relationship between the recording area of the optical disc according to the embodiment of the information recording medium of the present invention and the address at which the position of the recording area can be specified.
  • the vertical axis in FIG. 3 indicates address values such as sector numbers and land pre-pit addresses, for example, and the horizontal axis indicates the relative position in the radial direction of the optical disk.
  • a specific example of “address” according to the present invention for example, LBN (Logical Block Number), for example, a physical sector number (sector number) constituting an ECC block, or a land pre-pit address.
  • the recording area of the optical disc 100 is as described above.
  • (I) Power calibration area PCA (Ii) Recording Management Area RMA, (iii) Lead Data Area 101 with Control Data Zone CDZ, (iv) Data Area 102, and (V) Lead Out Area 103. It is configured.
  • Various attribute management information may be recorded in the RMA or CDZ.
  • the attribute management information includes (ii-1) information on recording characteristics such as optimum recording power, (ii-2) attribute information for specifying the type of medium, and (ii 3) various recording areas.
  • Various information for managing the information recording medium such as information for identifying the location of the information.
  • the address power that can uniquely identify the position of the recording area of the optical disc 100 described above for example, when the LBA or physical sector number (sector number) is used, the optical pickup power
  • the address in the recording area of the optical disc 100 may increase as the inner peripheral side force moves to the outer peripheral side (see the thick solid line in FIG. 3).
  • the address where the position of the recording area can be uniquely specified is, for example, a land pre-pit address
  • the optical pickup of the information recording / reproducing apparatus described later has an inner peripheral force on the outer peripheral side. As you move to, the address in the recording area of the optical disc 100 will decrease, and you may try again!
  • FIG. 4 is a schematic diagram and other conceptual diagrams showing clock information and address information necessary for recording that can be obtained in the wobbling force of the group track in the optical disc according to the embodiment of the information recording medium of the present invention (FIG. 4).
  • the optical disk according to the present embodiment has a group.
  • the Bratrack GT is oscillated with a constant amplitude and spatial frequency. That is, the group track GT is wobbling, and the period of the wobble 109 is set to a predetermined value.
  • the preformat address information may be recorded in advance by modulating the wobble 109 of the groove track GT by a predetermined modulation method such as frequency modulation or phase modulation.
  • the recording address on the optical disc is called an absolute time in pre-groove (ATIP) signal due to subtle frequency changes.
  • ATP absolute time in pre-groove
  • the two types of addressing described above ie, wobble 109 and ATIP or land pre-pit LPP, obtain information necessary for recording data such as disk rotation control during recording, generation of a recording clock, and recording address.
  • information necessary for recording data such as disk rotation control during recording, generation of a recording clock, and recording address.
  • the writing is performed in consideration of the recording parameters such as the optimum recording power of the laser light and the recording strategy.
  • the recording clock and recording address used for the recording are required.
  • FIG. 5 shows one example of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention and the wobble signal obtained in the first recording area force in another specific example. It is a schematic diagram and other conceptual diagrams (Fig. 5 (a) to Fig. 5 (d)).
  • the first wobble signal WB1 as shown in FIG. 5 (a) is obtained from the first recording area.
  • a recording area may be configured. More specifically, with the direction of the recording track as a reference, the amplitude of the wobble is decreased and AM (Amplitude Modulation) in front of the first recording area. On the other hand, at the rear of the first recording area, the amplitude of the wobble is increased to cause AM. Especially when the amplitude starts to decrease and changes when it starts to increase Is preferred. This is because it is possible to realize a simpler manufacturing process. More specifically, the comparator in the information recording / reproducing apparatus described later cannot detect the wobble signal from the bandpass filter.
  • the first wobble signal WB2 as shown in FIG. 5 (b) is obtained from the first recording area.
  • a recording area may be configured. More specifically, in all areas of the first recording area, the wobble may be configured to be almost or completely eliminated so that the wobble signal WB2 cannot be obtained.
  • more sophisticated control is required in the manufacturing process.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter, as in the specific example described above.
  • the first wobble signal WB3 as shown in Fig. 5 (c) is obtained from the first recording area.
  • a recording area may be configured.
  • the wobble frequency may be modulated from ⁇ to ⁇ and FM (Frequency Modulation) in all areas of the first recording area.
  • FM Frequency Modulation
  • the frequency may be increased to 2 times, 5 times, etc., or may be reduced to 1/2 times, 1Z5 times, etc.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter in the same way as the above specific example.
  • the first wobble signal WB4 as shown in FIG. 5 (d) is obtained from the first recording area.
  • a recording area may be configured.
  • At least one of the wobble frequency, amplitude, and phase may be modulated in the first recording area.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the band pass filter, as in the above specific example.
  • the recording track itself such as a groove track is stored in advance. You may comprise so that it may not form.
  • the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter in the same way as the above specific example.
  • a general information recording device does not acquire an accurate recording clock and recording address based on a signal from the wobble, so it is pre-recorded in the first recording area. Overwriting encrypted information and file systems with illegal unintentional information and tampering with unintentional information are almost or completely impossible.
  • FIG. 6 shows a recording area of a wobbleless section which is a specific example of the first recording area of the present invention, and a wobble which is a specific example of the second recording area of the present invention.
  • FIG. 6 is a schematic diagram conceptually showing an arrangement relationship with a recording area of a section.
  • the information recording medium of the present invention is (i) in the lead-in area 101, for example, the first no-wobble section such as the control data zone CDZ (that is, the first recording medium of the present invention).
  • the first no-wobble section such as the control data zone CDZ (that is, the first recording medium of the present invention).
  • One specific example of one recording area) and (ii) The inner area of the data area is provided with a second wobbleless section.
  • the other recording area is configured as a wobbled section (that is, a specific example of the second recording area of the present invention).
  • the file system FS la can be arranged in the wobbled section W1, for example, on the outer peripheral side.
  • the starting point of the recording area where this file system FS la can be placed is, for example, position information where the physical sector number is “30000h”, or position information where the LSN (Logical Sector Number) is “0”, for example. May be specified.
  • the radius position of the start point of the wobble-free section may be, for example, “24 (mm)”. In this case, the starting point of the file system FS la is at least less than 24 mm.
  • file system FS lb power for example, can be recorded later in time by the user.
  • the file system FSlb may be information with high expandability, that is, information relating to a logical hierarchy when recording information is recorded or reproduced, such as a directory structure, a file structure, or an anchor point.
  • FIG. 7 is a conceptual diagram schematically showing various characteristics when a CAV control method is applied to a general optical disc.
  • Fig. 8 is a conceptual diagram schematically showing various characteristics of a general optical disc when the CLV control method is applied.
  • Fig. 9 is a schematic diagram schematically comparing the wobble wavelength when the CAV control method is applied to the wobble wavelength when the CLV control method is applied to a general optical disk (Fig. 9).
  • FIG. 10 is a graph (FIG. 10 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and addresses, and the first method area of the present invention.
  • FIG. 10B is a graph schematically showing the relationship between the rear and second system areas and the rotation speed of the information recording medium.
  • FIG. 11 shows another graph (FIG. 11 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and addresses, and the first method area of the present invention.
  • FIG. 11 is another graph (FIG. 11 (b)) schematically showing the relationship between the second method area and the rotation speed of the information recording medium.
  • Figures 10 (a) and 11 (a) are graphs when the address increases, but even if the address decreases, the slope of the rate of change of the address on the graph can be reversed. Oh ,.
  • the angular velocity of the CAV control method or the like is constant. Therefore, even if the wobble 109 for obtaining the rotational speed control signal for recording is not formed, the pre-recording device that performs pre-recording is used. Only then, the encrypted information can be pre-recorded in the correct position. Specifically, it is possible to pre-record a recording mark having a desired length constituting the encryption information at an accurate position.
  • the CAV control method is a rotational speed control in which the angular speed is constant, that is, the rotational speed per unit time is constant when information is recorded on the optical disc. It is a method. Therefore, in the CAV control method, the linear velocity changes during recording on the inner and outer circumferences of the optical disc. For this reason, it is possible to simplify the control of the rotation speed of the spindle motor.
  • the size of the control data zone CDZ in the radial direction is very small, about 200 tracks, on the inner periphery of the optical disk. Therefore, when recording the encryption key information in the control data zone CDZ to which the CAV control method is applied, it is almost or completely necessary to change the recording parameters such as the recording strategy according to the change of the linear velocity. Nah ...
  • the CLV control method is applied to the recording area of the wobbled section of the optical disc 100 according to the present embodiment (that is, one specific example of the second recording area of the present invention).
  • the number of revolutions per unit time can be increased on the inner circumference side of the optical disc 100, and the number of revolutions per unit time can be lowered on the outer circumference side. Therefore, when recording information in the recording area of the wobbled section, the rotational speed of the spindle motor is controlled corresponding to the radial position of the optical disk based on the recording rotational speed control signal obtained from the wobble.
  • the linear velocity can be kept constant.
  • the wobble wavelength L2 in the recording area of the wobbled section to which the CLV control method is applied can be made different.
  • one sync frame “lsyn” is composed of eight wobbles.
  • One sector “lsector” is composed of 26 sync frames.
  • One ECC block is composed of 16 sectors.
  • One ECC block is 32 (KB: Kilo bytes).
  • an address represented by a sector or ECC block is used. Is defined based on the wobble wavelength. Specifically, an address corresponding to a certain length of a recording track is specified based on a wobble corresponding to a physical recording unit that can specify an address to which a CAV control method is applied and whose wavelength is “L1”. The case where the wavelength is “L2” and the case where it is specified based on the wobble to which the CLV control method is applied is different.
  • the recording process is performed by the CAV control method.
  • the second method area A2 radius position is on the outer periphery side from the point, or the radius position is on the inner periphery side from the point a
  • the recording process is performed. Therefore, the first method area A1 recorded between the CAV control method (between the “& point” radius position) and the second method area A2 recorded with the CLV control method (the radius position is point).
  • the boundary address (sector address) of the first method area A1 is the same as the boundary address (pre-address) of the second method area A2 at the boundary point with the outer periphery side or the radial position on the inner periphery side from the “a point”. They can be different or roughly matched. Specifically, at the boundary point where the radial position is “a point”, the address of the second method area A2 and the address of the first method area A1 are almost the same! /, And the rotation speed is also It is almost the same. On the other hand, the boundary address at the outer peripheral edge “b” of the first method area A1 takes the value “Ab”, and the boundary address at the inner peripheral edge “c” of the second method area A2 is “Ac”. Is discontinuous. At the same time, the number of revolutions at the outer peripheral end “b” of the first method area A1 and the number of revolutions at the inner peripheral end of the second method area A2 do not match and are discontinuous.
  • the first method area A1 (the radius position is between "a point” and "b point”). ) Is recorded by the CAV control method. Power! From the end of this first method area A1, in the second method area 8 2 (radius position is “outside”), based on the pre-address preformatted by the CLV control method, A recording process is performed.
  • the first method area A1 recorded between the CAV control method (between the “& point” radius position) and the second method area A2 recorded using the CLV control method (the radius position is “point”) Side or radial position is ⁇ a It is possible to make the boundary address (sector address) of the first method area Al substantially coincide with the boundary address (pre-address) of the second method area A2 at the boundary point with the inner periphery side of the “point”. Note that the dotted line in Fig. 11 (a) indicates the pre-address preformatted by the CLV control method when the first method area A1 (the radius position is between "a point” and "b point”) does not exist. Show.
  • the boundary address at the outer edge “b” of the first method area A1 takes the value “Ab”
  • the number of revolutions at the outer peripheral end “b” of the first method area A1 and the number of revolutions at the inner peripheral “c point” of the second method area A2 match and are continuous.
  • the information recording medium that is the electronic distribution destination and to be copied is a legitimate recording type information recording medium. It is possible to more easily and accurately identify whether or not the information recording medium has been illegally copied.
  • a general information recording / reproducing apparatus is pre-recorded with predetermined data such as a disc key, that is, encryption key information, for example!
  • predetermined data such as a disc key, that is, encryption key information, for example!
  • a wobble signal cannot be detected as clock information. Therefore, a general information recording / reproducing apparatus does not distinguish from a reproduction-only information recording medium such as a DVD-ROM, for example, and generally corresponds to the information-recording medium of the present invention.
  • the aforementioned special program such as an application corresponding to a reproduction-only information recording medium. Note that this special program may be pre-recorded in the recording area of the section without wobble, or may be recorded in a recording area other than the recording area of the section without wobble.
  • a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in a recording area of a wobbleless section. It is impossible to rewrite predetermined data such as encryption key information pre-recorded in the recording area. Therefore, for example, copyright protection of the information recording medium can be realized.
  • the wobble signal can be detected as the clock information described above, so that general recording processing can be performed.
  • a determination area for determining whether or not the power to allow playback of recorded information is first accessed. If the area is included in the recording area of the wobble-free section, it is possible to enjoy the following effects. That is, since the wobble is not preformatted in the recording area of the no-wobble section, the conventional player (general information recording / reproducing apparatus) cannot detect the wobble. Therefore, the general information recording / reproducing apparatus has at least the determination area. In the reproduction processing in the above, it is impossible to distinguish between the information recording medium of the present invention and a general information recording medium dedicated to reproduction such as a DVD-ROM. As a result, the conventional reproducing apparatus can perform the reproducing process on the information recording medium of the present invention in the same manner as a general reproduction-only information recording medium.
  • a conventional player (general information recording / reproducing device) records, for example, title information of DVD content and is recorded as clock information in a recording area of a section without a wobble. Bull signal cannot be detected. Therefore, a general information recording / reproducing apparatus does not distinguish from a reproduction-only information recording medium such as a DVD ROM, for example, and generally corresponds to the information-recording medium of the present invention. It is possible to perform the above-mentioned reproduction restart processing (resume operation).
  • the information reproducing apparatus first (1) an address indicating the reproduction position of the recorded information that was reproduced at the moment when the information recording medium was removed during reproduction, (2) Recorded in the middle of playback such as title information of recorded information, or (3) a data string indicating a predetermined position existing at the beginning of the user data area.
  • Specific information that can specify recording information is stored in a storage means such as an internal memory.
  • the information reproducing apparatus records, for example, specific information such as title information, and (i) a wobble signal is detected as clock information. Whether or not (ii) the ability to reproduce the specific information.
  • the information reproducing apparatus (i) when a wobble signal is not detected as clock information in an area where the specific information is recorded, or (ii) when specific information such as title information can be reproduced, Playback can be resumed from the vicinity of the address indicating the playback position of the recorded information that is stored.
  • the information recording / reproducing apparatus 200a may include a pre-recording apparatus.
  • FIG. 12 is a block diagram showing the overall configuration of the information recording / reproducing apparatus according to the information recording apparatus of the present invention.
  • pit data DP synchronized with the first clock signal C K1 is recorded according to the length of the recording mark.
  • the recording mark is a pit
  • the track is composed of a pit row.
  • the track has a meandering shape according to the wobble signal WB.
  • the wobble signal WB is the first clock Is synchronized with the CK1 signal.
  • the information recording / reproducing apparatus 200a includes an optical pickup 202 that irradiates the optical disc 100 with a reproduction beam and outputs a signal corresponding to the reflected light, a spindle motor 203 that controls the rotation of the optical disc 100, and a servo unit 222.
  • the servo unit 222 is supplied with the first clock signal CK1 and the pit synchronization signal SYNCp. In synchronization with these signals, the servo unit 222 executes a spindle servo that controls the rotation of the spindle motor 203 and a focus servo and a tracking servo that are relative position controls of the optical pickup 202 with respect to the optical disc 100.
  • the optical pickup 202 includes a laser diode that irradiates a reproduction beam, and a quadrant detection circuit (not shown).
  • the quadrant detection circuit divides the reflected light of the reproduction beam into four regions 1A, 1B, 1C, and ID shown in FIG. 12, and outputs a signal corresponding to the light amount of each region.
  • the head amplifier 204 amplifies each output signal of the optical pickup 202, and the divided read signal la corresponding to the area 1A, the divided read signal lb corresponding to the area IB, the divided read signal lc corresponding to the area 1C, and the area The divided read signal Id corresponding to the ID is output.
  • the optical pickup 202 and the head amplifier 204 correspond to the optical pickup means according to the present invention.
  • the sum generation circuit 210 adds the divided read signals la, lb, lc, and Id, and serves as an adder circuit that outputs the sum read signal SRF.
  • the total read signal SRF is a signal indicating the length of the recording mark.
  • the pit data demodulation circuit 211 reproduces the pit data DP based on the total read signal SRF and also generates the first clock signal CK1. More specifically, the pit data DP is demodulated using a predetermined table to generate reproduction data. For example, when EFM modulation is adopted as a modulation method, a process of converting 14-bit pit data DP into 8-bit reproduction data is performed. Further, a descrambling process for rearranging the order of the reproduction data in accordance with a predetermined rule is executed, and processed reproduction data is output.
  • the reproduction data obtained in this way is supplied to the pit data correction circuit 212 shown in FIG. 12, where it is subjected to error correction processing, interpolation processing, etc., and then stored in the nother 213. .
  • the interface 214 sequentially reads out the data stored in the buffer 213. Convert to a fixed output format and output to an external device. Furthermore, various data are input / output via the interface 214 to / from a line connection device (described later) connected to the external network 400, for example.
  • the push-pull signal generation circuit 220 calculates (la + Id) (lb + lc) and generates a push-pull signal.
  • the component (la + ld) corresponds to the regions 1A and 1D on the left side with respect to the reading direction, while the component (lb + lc) corresponds to the regions 1B and 1C on the right side with respect to the reading direction. That is, if the playback beam is biased to the left with respect to the pit, the push-pull signal is positive with respect to the center of amplitude, and if the playback beam is located at the center of the pit, the value of the push-pull signal is centered on the amplitude.
  • the push-pull signal becomes negative with respect to the amplitude center.
  • the relative position of the playback beam and the pit changes according to the meandering of the track, and the value of the push-pull signal indicates the relative position of the playback beam and the pit. That is, the push-pull signal is a signal corresponding to the meandering of the track.
  • the push-pull signal is output to the servo unit 222 via the low-pass filter 221.
  • the servo unit 222 performs tracking control based on the push-pull signal.
  • the push-pull signal is supplied to the band pass filter 223.
  • the pass band of the band-pass filter 223 is set so that the wobble signal WB obtained by spread spectrum modulation of the wobble data DW can be extracted from the push-pull signal during recording. Therefore, the band-pass filter 223 constitutes the above-described detection means together with the push-pull signal generation circuit 220, and the output signal thereof is a reproduction of the wobble signal WB from the optical disc 100.
  • the comparator 224 cannot detect the recording clock and the recording address in the special area according to the present invention when attempting to write illegally to the second recording information recording area. Since an error occurs and the recording operation is stopped, it is possible to prevent illegal writing to the second recording information recording area regardless of the specifications of the information recording / reproducing apparatus including the pre-recording apparatus and the recording control procedure. Become. That is, the PLL (Phase Locked Loop) can be made uncontrollable.
  • the PLL Phase Locked Loop
  • the LPP detection circuit 230 detects the LPP signal based on the output signal A from the comparator 224 and the first clock signal CK1 generated by the pit data demodulation circuit 211. It is configured to be possible.
  • the LPP signal B can be output to the LPP demodulation circuit 230 and the servo unit 222.
  • the LPP demodulation circuit 230 is configured to be able to demodulate the LPP signal B into preformat address information.
  • the preformat address information can be output to the error correction circuit 229.
  • the error correction circuit 229 performs error correction on the preformat address information demodulated by the LPP demodulation circuit 230.
  • the CPU 250 performs overall control of each component of the information recording / reproducing device 200a.
  • FIG. 13 is a flowchart showing the pre-recording operation principle in the pre-recording apparatus 200 according to the present embodiment.
  • FIG. 14 is a schematic diagram of the recording area (FIGS. 14 (a) to 14 (b)) schematically showing the transition of the pre-recorded recording area in the information recording medium of the present invention.
  • step S 101a when the optical disc 100 is loaded, first, a seek operation is performed by the optical pickup 202 under the control of the CPU (Central Processing Unit) 250 of the pre-recording apparatus 200 (step S 101a ).
  • CPU Central Processing Unit
  • step S102a it is determined whether or not the optical disc 100 is an optical disc for content distribution.
  • various management information necessary for the recording operation on the optical disc 100 is determined or acquired (step S103a). More specifically, the OPC process is performed to determine the optimum recording power and the recording strategy pattern. The presence or absence of an emboss pit is detected.
  • the start address information power indicating the start position of the control data zone CDZ to which the CAV control method is applied is also acquired preformat address information power such as a land pre-pit.
  • step S104a it is determined whether or not content has been recorded on the optical disc 100 (step S104a).
  • step S104a when content is not recorded on the optical disc 100 (step S104a: No), for example, when searching for a predetermined address for pre-recording encryption key information, Both prepare for pre-recording (step S 105a).
  • step S106a the address of the position where the recording process is performed is detected based on the CLV control method.
  • step S106a if the address of the recording position is detected based on the CLV control method (step S106a: Yes), the linear velocity is made constant based on the CLV control method under the control of the CPU 250. (Step S107a).
  • step S106a if the address of the position where the recording process is to be performed is not detected (step S106a: No), step S106a is performed again.
  • a recording process is performed based on the CLV control method under the control of the CPU 250 (step S108a). Specifically, as shown in step S10 in FIG. 14 (a), the EBZ (Ext ended Border Zone) recording process is performed based on the CLV control method using the normal seamless link method. A 16-byte eye is also started from the position. Next, this EBZ recording process is completed after a recording process up to a position that is just before one ECC block of FS (File System) plus a length corresponding to 16 bytes.
  • FS Fe System
  • step S30 in FIG. 14 (c) there is a possibility that a recording process based on the CAV control method may be performed, and a recording process based on the CLV control method is performed. It is also possible to perform a recording process of a buffer area that may be detected. More specifically, the buffer area recording process starts from a position obtained by adding a length corresponding to 16 ECC to the end of the wobbleless section W1. Next, the buffer area recording process is terminated after a predetermined data amount recording process of, for example, about 200 ECC blocks.
  • step S109a under the control of the CPU 250, the address of the position where the recording process is performed is detected based on the CAV control method (step S109a).
  • step S109a when the address of the position to perform the recording process is detected (step S109a: Yes), the output value of the applied voltage or current of the spindle motor is fixed under the control of the CPU 250.
  • the angular velocity is made constant based on the CAV control method (step S110a).
  • step S109a when the address of the position where the recording process is performed is not detected (step S109a: No), step S109a is performed again.
  • step Sl la la a recording process is performed based on the CAV control method under the control of the CPU 250 (step Sl la la). Specifically, as shown in step S20 in Fig. 14 (b), the CDZ The recording process starts from the beginning (starting position) of the CDZ by 16 (or 32) ECC blocks. Next, the CDZ recording process is completed after a recording process up to a position obtained by adding about 3 sectors (6000 bytes) to the start position (start position) of the EBZ.
  • predetermined data recording processing based on the CAV control method may be performed. More specifically, this predetermined data recording process starts from the end of the recording area secured as the FS. Next, the recording process of the predetermined data is completed after the recording process up to the position obtained by adding a predetermined length to the start position of the buffer area described above.
  • step S112a it is determined whether or not all the recording processes have been completed under the control of the CPU 250 (step S112a).
  • step S112a: Yes when all the recording processes are completed (step S112a: Yes), a series of pre-recording operations is terminated.
  • step S 112a: No when all the recording processes are not completed (step S 112a: No), as described above, the address of the position where the recording process is performed is detected based on the CLV control method (step S 106a).
  • step S102a when it is determined that the content is not an optical disc for distribution (step S102a: No), and as a result of the determination in step S104a, the content is recorded on the optical disc 100. If it is determined that the recording has been completed (step S1 04a: Yes), the optical disc 100 is ejected from the pre-recording apparatus 200.
  • recording information such as content may be recorded, for example.
  • the file system may be recorded.
  • the lead-in area, lead-out area, etc. may be recorded subsequently by finalization processing.
  • FIG. 15 is a table conceptually showing a type of pre-recording procedure according to the embodiment of the information recording apparatus of the present invention. For convenience of explanation, four types of combinations of two types of information recording media and two types of recording procedures will be described in order.
  • the two types of information recording media explain.
  • the first type of information recording medium is at the boundary between the first method area A1 recorded by the CAV control method and the second method area A2 recorded by the CLV control method.
  • This is an information recording medium of a type that makes the boundary address of the first system area A1 different from the boundary address of the second system area A2 (hereinafter referred to as “type A information recording medium” as appropriate).
  • the second type of information recording medium includes the first method area A1 recorded by the CAV control method and the second method area A2 recorded by the CLV control method, as shown in FIG.
  • the type of information recording medium (hereinafter referred to as ⁇ Type B information recording medium '' as appropriate) is used so that the boundary address of the first method area A1 is substantially the same as the boundary address of the second method area A2. is there.
  • the first type of recording procedure is a recording procedure in which pre-recording in the first method area is performed (hereinafter referred to as “case 1 recording procedure” as appropriate).
  • the second type of recording procedure is a recording procedure in which pre-recording is performed in the second method area in addition to the first method area (hereinafter, referred to as “case 2 recording procedure” as appropriate).
  • the information recording medium is “type A” and the recording procedure is “case 1”, and (ii) the information recording medium is “type A”, and the recording procedure is “case 2”.
  • the type of information recording medium is “Type B” and the recording procedure is “Case 1”, and
  • the information recording medium is “Type B” and the recording procedure is “Case 2”. It is a certain type. The following describes the four types in order.
  • the type of information recording medium power ⁇ type A ”and the recording procedure“ Case 1 ” is commercially available with predetermined data pre-recorded in the recording area of the wobbleless section and released to the end user. It is a type. This can be used for electronic distribution. Specifically, by using a special pre-recorder, a predetermined length “a” is placed in the first method area A1 (radius position between “a point” and “b point”) in FIG. 10 described above. The specified data is recorded on the basis of the CAV control method. The endorser does a predetermined data only in this part, that is, in the recording area of the section without wobble.
  • Recorded information such as content that has been electronically distributed and downloaded to an information recording medium (so-called “Blank Disc”) in which the data has been recorded and the recorded information such as content has not been recorded. Record. More specifically, on this blank disc, at least a part of the user data area is a straight group, and dummy data or predetermined data such as a predetermined application, predetermined content, and encryption key is pre-recorded ( Prewritten).
  • the control data zone CDZ may also be pre-recorded.
  • the first feature is that, as shown in FIG. 10 described above, the end of the second method area (the section in which the recording process is performed by the CLV control method) and the first method area (the recording process is performed by the CAV).
  • the linear velocity at the time of moving to the next section is recorded so as to be approximately the same.
  • recording is also started for a predetermined address force indicating, for example, at least 16 ECC blocks ahead of the start end of the first method area, and the CAV mode is entered after the address indicating the start end of the first method area. Switch.
  • the same recording process is performed.
  • the second feature is that the end of the first method area is within a wobbled section that is separated from the boundary point between the wobbleless section and the wobbled section by a predetermined length, for example, about 16 ECC blocks. It is a point.
  • the address indicating the end of the first method area is based on a predetermined calculation (simulation, theoretical formula, empirical formula, empirical formula), and constitutes a reference clock signal generator for generating a recording clock.
  • Position accuracy errors occur due to errors in the time accuracy of the recording clock caused by the crystal and variations in the track pitch on the signal surface of the information recording medium. Therefore, the recording clock at the end of the first method area and the period of wobbles pre-formatted in the wobbled section are almost unsynchronized. Therefore, the recording process based on CAV is stopped at a position that is at least synchronized (so-called locked) with the recording clock at the end of the first method area and the period of the wobble preformatted in the section with wobble. It may be.
  • the third feature is that the linear velocity at the end of the first method area is different from the linear velocity at the start of the second method area continuously shifted from the end (so-called (Regarding linear velocity for appending).
  • the fourth feature is that the sector address at the end of the first method area is not contiguous with the pre-address at the start of the second method area that is continuously shifted. It may be. In other words, the sector address may have a discontinuity at the boundary point between the wobbleless section and the wobbled section.
  • the type of information recording medium power ⁇ type A ”and the recording procedure“ case 2 ” is pre-recorded when the first method area and the second method area reach the end user's hand. If. This is equivalent to small-volume publication.
  • the method of recording in the first method area and the second method area is almost the same as “Case 1” described above.
  • the recording information in the first recording area (no wobble section) in the user data area may be recorded simultaneously with or before or after recording in the file system. Further, the recording information in the first recording area (no wobble section) in the user data area may be a part of the recording information such as DVD-Video content.
  • the type of information recording medium power ⁇ type B ”and the recording procedure“ case 1 ” is wobbled.
  • the wobble in the section with wobble (so that the pre-address at the start end of the second scheme area in the section with the sector address at the end end of the first scheme area that continuously transitions to this start end) Wobble) or land pre-pit (LPP) pre-address is pre-formatted.
  • LPP land pre-pit
  • the sector address at the end of the first scheme area is set to match the pre-address at the start of the second scheme area. Therefore, when recording information in the first method area, it is ideally seamlessly linked (connected). In practice, for example, there is an error in the time accuracy of the recording clock due to the crystal forming the reference clock signal generator for generating the recording clock. For this reason, the sector address at the end of the first method area may deviate somewhat from the pre-address at the start of the second method area. Relatively small. As a result of the above, it is possible to reduce the data amount of the CAVZCLV buffer area to be recorded as compared with the case of “type A”.
  • the type of information recording medium power ⁇ type B ”and the recording procedure“ case 2 ” is pre-recorded when the first method area and the second method area reach the end user's hand. If. This is equivalent to small-volume publication.
  • the method of recording in the first method area and the second method area is almost the same as (2-3-3) “Type B” and “Case 1” described above.
  • FIG. 16 shows a recording operation performed on the information recording medium of the present invention.
  • 1 is a block diagram showing an overall configuration of a distribution system including an information recording apparatus and an information distribution apparatus that performs a distribution operation. Note that the step numbers in FIG. 16 correspond to the step numbers in FIG. In the distribution system according to the present embodiment, a DAO (Disk At Once) method may be adopted.
  • DAO disk At Once
  • the distribution system includes (i) an information recording device 200 that performs a recording operation on the optical disc 100, and (ii) an encrypted content in the information recording device 200.
  • an information distribution device 300 such as a web server
  • an external network 400 such as the Internet that enables the information recording device 200 and the information distribution device 300 to exchange information. It is configured with.
  • the optical disc 100 includes the NBCA, the control data zone CDZ, and the data area 102 for recording the encrypted content. More specifically, the media ID is recorded in NBCA by laser cutting. In the control data zone CDZ, encryption information Key 1 such as a disc key is recorded! In the data area 102, the encrypted content distributed by the information distribution apparatus 300 described later is recorded as it is.
  • the information recording device 200 transmits the media ID of the optical disc 100 to the information distribution device 300.
  • the encrypted content received from the information distribution apparatus 300 is recorded on the optical disc 100.
  • the information distribution apparatus 300 receives the media ID transmitted by the information recording apparatus 200. It generates encryption key information Keyl such as a disc key corresponding to the received media ID and encryption key information Key2 such as a title key. Based on the generated encryption key information Key 1 and Key 2, encryption processing such as encryption key is performed on the content.
  • the encrypted content that is, the encrypted content is distributed to the information recording apparatus 200. Since the encrypted content is distributed via the external network 400, encryption corresponding to eavesdropping and tampering such as SSL (Secure Socket Layer) is performed separately from encryption in the encryption network. Also good.
  • SSL Secure Socket Layer
  • the external network 400 includes an information recording device 200 and an information distribution device 300, both of which are connected to a line connection device (not shown) (for example, a hub device, a digital termination connection device (DS u) or a router equipped with a firewall application for intrusion prevention, etc.) so that information can be exchanged.
  • a line connection device for example, a hub device, a digital termination connection device (DS u) or a router equipped with a firewall application for intrusion prevention, etc.
  • FIG. 17 is a flowchart showing various processes in the information recording apparatus and information distribution apparatus of the present invention. Note that the step numbers in FIG. 17 correspond to the step numbers in FIG.
  • step S 101 when the optical disc 100 is loaded, first, a seek operation is performed by the optical pickup 202 under the control of a CPU (Central Processing Unit) 250 of the information recording apparatus described later (step S 101). ).
  • a CPU Central Processing Unit
  • step S102 it is determined whether or not the optical disc 100 is an optical disc for distributing content.
  • the optical disk 100 is an optical disk for delivering content (step S102: Yes)
  • various information necessary for the recording operation on the optical disk 100 is acquired (step S103). More specifically, the OPC process is performed to determine the optimum recording power and the recording strategy pattern.
  • step S104 it is determined whether or not content has been recorded on the optical disc 100 (step S104).
  • step S104 when content has not been recorded on the optical disc 100 (step S104: No), the optical disc 100 is controlled from the optical disc 100 under the control of the CPU 250, for example, from the NBCA (Narrow Burst Cutting Area). A unique media ID is obtained (step S105).
  • NBCA Narrow Burst Cutting Area
  • the acquired media ID is encrypted based on SSL or the like, and is transmitted to, for example, the information distribution apparatus 300 such as a server on the network (step S106).
  • step S102 determines whether the content is not an optical disc for distribution (step S102: No) or not an optical disc for distribution (step S102: No), and the result of determination in step S104 is optical If it is determined that the content has been recorded on the disc 100 (step S104: Yes), the optical disc 100 is ejected from the information recording apparatus 200.
  • Information distribution apparatus 300 first receives a media ID encrypted by SSL or the like (step S 201).
  • the information distribution apparatus 300 decrypts the received media ID encrypted by SSL or the like (step S202).
  • the information distribution apparatus 300 generates encrypted information Keyl such as a disc key corresponding to the decrypted media ID and encrypted key information Key2 such as a title key (step).
  • step S204 the content and file system distributed by the generated encryption information Key1 and Key2 are encrypted by a predetermined encryption system.
  • the encrypted content and file system encrypted based on the encryption system using the generated encryption key information Key 1 and Key 2 are further converted to SSL or the like. And is distributed to the information recording apparatus 200 (step S 205). More specifically, the encrypted content encrypted by SSL or the like and the attribute of the file system, so-called CCI (Copy Control Information), cannot be reproduced during distribution. To do this, it is set to the Never Copy attribute.
  • CCI Copy Control Information
  • the information recording apparatus 200 receives the encrypted content and file system encrypted by SSL or the like distributed by the information distributing apparatus (step S107).
  • the information recording apparatus 200 decrypts the received encrypted content and file system using SSL or the like (step S 108).
  • the encrypted content and the file system encrypted by the encrypted key information Keyl and Key2 are not decrypted, and are directly stored in the optical disc 100.
  • Record (step S109) More specifically, the encrypted content and the file system recording encrypted based on a predetermined encryption system are pre-recorded and started from the address of the last recording area of the lead-in area 101, The process ends at the address of the recording area of the pre-recorded lead-out area 103. If the encrypted content and the recording capacity of the file system are not performed up to the address of the prerecorded recording area of the lead-out area 103, the buffer data may be recorded up to this address. . In the lead-in area 101, the lead-out area 103, etc., the buffer data may be written in advance and sold, or the information recording device 200 may add new data when recording encrypted content. May be written.
  • the encryption key information Key 1 and Key Send / receive media ID instead of 2. Therefore, for example, it is possible to keep the confidentiality of the encryption key information Keyl pre-recorded in a recording area such as a control data zone high, that is, to make it secure. Therefore, it becomes almost or completely impossible to create or manufacture a recordable information recording medium on which an illegal copy of the encryption key information Key 1 has been made.
  • FIG. 18 is a graph (FIG. 18 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium
  • FIG. 18 is a schematic diagram (FIG. 18B) schematically showing the relationship between the first method area and the second method area of the present invention and the address.
  • the same reference numerals are assigned to substantially the same configurations as the above-mentioned “(1-4-2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the same reference numerals are given. Description is omitted as appropriate.
  • the boundary address at the outer edge of the first method area is "N".
  • the boundary address at the inner periphery of the second method area takes the value “N + 3” and is not continuous.
  • the electronic distribution destination is copied. It is possible to more easily and accurately identify whether the target information recording medium is a legitimate recording type information recording medium or an illegally copied information recording medium. is there.
  • FIG. 19 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
  • the boundary point between the first method area and the second method area (i) the physical in the case where the first method area does not exist
  • the phase of the first wobble corresponding to the recording unit and the second wobble that can specify the address of the second method area may be continuous, or (ii) the frequency of the first wobble and the second Make the wobble frequency approximately equal.
  • FIG. 20 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
  • FIG. 21 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
  • the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
  • the boundary between the first method area and the second method area corresponds to the first wobble corresponding to the physical recording unit when it is assumed that the first method area does not exist.
  • the predetermined data amount (for example, one ECC block or one sector) may be separated, and the predetermined data amount corresponding to the second wobble capable of defining the address of the second method area may be used.
  • the power described for a write-once or rewritable optical disc as an example of an information recording medium, and a recorder or player related to an optical disc as an example of an information recording device are also applicable.
  • the information recording medium, information recording apparatus and method, and computer program according to the present invention irradiate laser light such as DVD (Digital Versatile Disc), BD (Blu-ray Disc), and CD (Compact Disc). Therefore, the present invention can be used for an information recording medium such as an optical disc that can be recorded and reproduced, and can be used for an information recording device of the information recording medium. Further, the present invention can also be used for an information recording device or the like that is mounted on or connectable to various computer equipment for consumer use or business use.

Abstract

An information recording medium is provided with a first recording area (area without wobbles) wherein detectable control information, i.e., at least either clock information (Wobble) or address information (LPP), is not preformatted, and one or a plurality of second recording areas (area with wobbles) wherein control information is preformatted, for recording or reproducing recording information. In the first recording area, recording information can be recorded by a first rotation velocity control system (for instance, CAV). The second recording area is preformatted by a second rotation velocity control system (CLV). The relationship between a radius position and an address in the second recording area is substantially the same as a prescribed relationship between the radius position and the address in a case where the first recording area does not exist and control information is preformatted by the second rotation control system (CLV).

Description

情報記録媒体、情報記録装置及び方法、並びに、コンピュータプログラム 技術分野  Information recording medium, information recording apparatus and method, and computer program
[0001] 本発明は、例えば DVD (Digital Versatile Disc)、 BD (Blu- ray Disc)、 CD (Compac t Disc)等のレーザ光を照射することによって記録及び再生が可能な光ディスク等の 情報記録媒体、当該情報記録媒体の情報記録装置及び方法、並びに、コンビユー タプログラムの技術分野に関する。 背景技術  The present invention relates to an information recording medium such as an optical disc that can be recorded and reproduced by irradiating laser light such as a DVD (Digital Versatile Disc), a BD (Blu-ray Disc), and a CD (Compact Disc). The present invention relates to an information recording apparatus and method for the information recording medium, and a technical field of a computer program. Background art
[0002] 特許文献 1等に、 DVD— RZRW等の記録型の情報記録媒体に予め暗号化情報 を記録して販売し、ネットワークを介して暗号ィ匕された DVDビデオコンテンツ (以下、 適宜「暗号化コンテンツ」と称す)を配信する配信システムが開示されている。この配 信システムにお!/、ては、従来の DVD— RZRW等の記録型の情報記録媒体と同一 の物理構造の情報記録媒体が利用される。言い換えると、記録用の回転速度制御 信号を得るためのゥォブル (Wobble)が形成された記録型の情報記録媒体における コントロールデータゾーン等の管理エリアに、 CLV (Constant Linear Velocity)制御 方式によって、従来の DVD— ROM等の再生専用型の情報記録媒体に適用された 暗号化情報を販売前に予めプリ記録している。ここに、 CLV制御方式とは、光デイス クに情報を記録する際に、線速度を一定とする回転速度制御方式である。この CLV 制御方式の特徴として、光ディスクの内外周にお 、てトラックに沿った記録密度が一 定となるため、高密度な記録を実現することが可能となる。但し、ゥォブルから得られ る記録用の回転速度制御信号に基づ 、て、光ディスクの半径位置に対応してスピン ドルモータの回転速度を制御することが必要となる。他方、 CAV (Constant Angular Velocity)制御方式とは、光ディスクに情報を記録する際に、角速度を一定、即ち、単 位時間当たりの回転数を一定とする回転速度制御方式である。この CAV制御方式 の特徴として、光ディスクの内外周における記録に際して線速度が変化する。このた め、外周において、トラックに沿った記録密度が低下する。このように、光ディスクの記 録領域の利用効率が低下するが、スピンドルモータの回転速度の制御を簡素化する ことが可能となる。 [0002] DVD video content (hereinafter referred to as “encryption” as appropriate) is disclosed in Patent Document 1 and the like, in which encrypted information is recorded in advance on a record-type information recording medium such as a DVD—RZRW and sold. A distribution system that distributes "content"). This distribution system uses information recording media that have the same physical structure as conventional recording media such as DVD-RZRW. In other words, the CLV (Constant Linear Velocity) control method is used in the management area such as the control data zone in the recording type information recording medium in which wobbles for obtaining the rotational speed control signal for recording are formed. Encrypted information applied to read-only information recording media such as DVD-ROM is pre-recorded before sales. Here, the CLV control method is a rotational speed control method in which the linear velocity is constant when information is recorded on an optical disk. As a feature of this CLV control method, since the recording density along the track is constant on the inner and outer circumferences of the optical disc, high-density recording can be realized. However, it is necessary to control the rotational speed of the spindle motor corresponding to the radial position of the optical disk based on the recording rotational speed control signal obtained from the wobble. On the other hand, the CAV (Constant Angular Velocity) control method is a rotational speed control method in which the angular velocity is constant, that is, the rotational speed per unit time is constant when information is recorded on the optical disc. As a feature of this CAV control method, the linear velocity changes during recording on the inner and outer circumferences of the optical disk. For this reason, the recording density along the track decreases at the outer periphery. Thus, the use efficiency of the recording area of the optical disk is reduced, but the control of the rotation speed of the spindle motor is simplified. It becomes possible.
[0003] 他方で、このような記録型情報記録媒体における記録領域と、再生専用型情報記 録媒体における再生専用領域 (再生専用エリア）とを併せ持つ、所謂、ノ、イブリツド型 の光ディスクにおける、コンテンツの記録位置及び再生位置を管理するための管理 情報、所謂、ファイルシステムについて、特許文献 3では、このハイブリッド型の光ディ スク上でのファイルシステムのデータ構造に関する技術が開示されている。  [0003] On the other hand, content in a so-called noble type optical disc having both a recording area in such a recordable information recording medium and a read-only area (playback-only area) in a read-only information recording medium With regard to management information for managing the recording position and the reproduction position, so-called file system, Patent Document 3 discloses a technique relating to the data structure of the file system on the hybrid optical disk.
[0004] 特許文献 1：特開 2001— 307427号公報  [0004] Patent Document 1: Japanese Patent Application Laid-Open No. 2001-307427
特許文献 2：特開 2001— 357001号公報  Patent Document 2: Japanese Patent Laid-Open No. 2001-357001
特許文献 3：特開 2003 - 272309号公報  Patent Document 3: Japanese Patent Laid-Open No. 2003-272309
特許文献 4：特開 2000 - 331412号公報  Patent Document 4: Japanese Patent Laid-Open No. 2000-331412
非特許文献 1：「DVDのコンテンツ保護」東芝レビュー Vol.58,No6(2003)  Non-Patent Document 1: “DVD Content Protection” Toshiba Review Vol.58, No6 (2003)
発明の開示  Disclosure of the invention
発明が解決しょうとする課題  Problems to be solved by the invention
[0005] し力しながら、上述した特許文献 1にお 、ては、記録型の情報記録媒体に関して特 別な工夫はなされていなぐ従来の記録型の情報記録媒体と同一の物理構造の記 録領域に、再生専用型 DVD (DVD— ROM)と同じ暗号化情報をプリ記録している。 このため、通常巿販されて 、る DVDディスクにお 、てプリ記録されて保護されて!、る 暗号化情報が、何らかの手段でその暗号化情報までもコピーされた違法な記録型 D VDディスク（以下、適宜「違法な記録型 DVDディスク」又は「違法な情報記録媒体」 と称す)が作られた場合、正当な暗号ィ匕システムの下で暗号ィ匕情報が記録された記 録型 DVDディスク（以下、適宜「正当な記録型 DVDディスク」又は「正当な情報記録 媒体」と称す)と区別をすることができな 、と 、う技術的な問題点がある。  [0005] However, according to Patent Document 1 described above, the recording of the same physical structure as that of a conventional recording type information recording medium is not performed. The same encryption information as that of a read-only DVD (DVD-ROM) is pre-recorded in the area. For this reason, illegally recorded DVD DVD discs that are usually sold and pre-recorded on DVD discs and protected! The encrypted information is copied to the encrypted information by some means. (Hereinafter referred to as “illegal recordable DVD disc” or “illegal information recording medium”), a recordable DVD in which encryption information is recorded under a valid encryption system. There is a technical problem that it cannot be distinguished from a disc (hereinafter referred to as “a legitimate recordable DVD disc” or “a legitimate information recording medium” as appropriate).
[0006] また、暗号ィ匕コンテンツの再生又は記録に関する既存のルールにおいては、記録 型 DVDディスクには、ディスクキー等の暗号ィ匕情報を記録することは推奨されて！、な い。従って、情報記録再生装置の初期動作において、各種の情報を取得するための シーク動作等によってメディアの種類の判別が行われる際に、記録型の情報記録媒 体に形成されたゥォブル (Wobble)が存在するか否かが検出される。このゥォブルの 検出に基づいて、正当な記録型 DVDディスクと、違法な記録型 DVDディスクとを区 別する方法も考案されて 、るが、正確に両者を区別することはできな 、と 、う技術的 な問題点もある。 [0006] In addition, in the existing rules regarding the reproduction or recording of encrypted content, it is recommended to record encrypted information such as a disc key on a recordable DVD disc! ,Absent. Therefore, in the initial operation of the information recording / reproducing apparatus, when the media type is determined by a seek operation for acquiring various types of information, the wobble formed on the recording type information recording medium is Whether it exists or not is detected. Based on the detection of this wobble, a legitimate recordable DVD disc is discriminated from an illegal recordable DVD disc. Another method has been devised, but there is also a technical problem that the two cannot be accurately distinguished.
[0007] そこで本発明は、例えば上記問題点に鑑みなされたものであり、ノ、イブリツド型の情 報記録媒体において、コンテンツ等の記録情報の著作権の保護を適切に実現するこ とが可能な情報記録媒体、情報記録装置及び方法、並びに、コンピュータをこのよう な情報記録装置として機能させるコンピュータプログラムを提供することを課題とする 課題を解決するための手段  [0007] Therefore, the present invention has been made in view of the above-described problems, for example, and it is possible to appropriately realize copyright protection of recorded information such as content in a no-information type information recording medium. Information recording medium, information recording apparatus and method, and computer program for causing a computer to function as such an information recording apparatus
[0008] (情報記録媒体）  [0008] (Information recording medium)
以下、本発明の情報記録媒体について説明する。  Hereinafter, the information recording medium of the present invention will be described.
[0009] 上記課題を解決するために、本発明の情報記録媒体は、記録情報を記録又は再 生するための、クロック情報 (Wobble)及びアドレス情報（LPP)のうち少なくとも一方で ある検出可能な制御情報がプリフォーマットされていない第 1記録エリア（ゥォブル無 し区間）と、前記制御情報がプリフォーマットされた一又は複数の第 2記録エリア (ゥォ ブル有り区間）と、を備え、前記第 1記録エリアにおいては、第 1回転速度制御方式（ 例えば CAVやゾーン CAV)により前記記録情報の一部が記録可能であり、前記第 2 記録エリアは、第 2回転速度制御方式 (CLV)によりプリフォーマットされており、前記 第 2記録エリアにおける半径位置とアドレスとの関係は、前記第 1記録エリアが存在し ないと共に、前記第 2回転制御方式 (CLV)により前記制御情報がプリフォーマットさ れる場合における、半径位置とアドレスとの所定の関係と、略同一である。  [0009] In order to solve the above-described problem, the information recording medium of the present invention is capable of detecting at least one of clock information (Wobble) and address information (LPP) for recording or reproducing the recorded information. A first recording area in which control information is not preformatted (a section without wobble) and one or a plurality of second recording areas in which the control information is preformatted (a section with wobble). In one recording area, a part of the recording information can be recorded by a first rotational speed control method (for example, CAV or zone CAV), and the second recording area is pre-recorded by a second rotational speed control method (CLV). The relationship between the radial position and the address in the second recording area is formatted so that the first recording area does not exist and the control information is programmed by the second rotation control method (CLV). When being formatted, a predetermined relationship between the radial position and the address, is substantially the same.
[0010] 本発明の情報記録媒体によれば、第 1記録エリアにおいては、記録情報を記録又 は再生するための、例えば記録トラックの揺動 (Wobbling)に基づくクロック情報、及 び、例えばランドプリピット（Land Pre Pit)等のアドレス情報のうちの少なくとも一方で ある検出可能な制御情報がプリフォーマットされていない。加えて、例えばデータエリ ァの内周側に位置する比較的小さい領域である第 1記録エリアにおいては、例えば CAV制御方式等の第 1回転速度制御方式 (CAV)の下で、記録情報の一部が記録 可能、又は、予めプリ記録可能である。  [0010] According to the information recording medium of the present invention, in the first recording area, for example, clock information based on wobbling of a recording track, and land information, for example, for recording or reproducing the recording information. Detectable control information that is at least one of address information such as pre-pit (Land Pre Pit) is not preformatted. In addition, in the first recording area, which is a relatively small area located on the inner circumference side of the data area, for example, the recorded information is recorded under a first rotational speed control method (CAV) such as a CAV control method. Part can be recorded, or pre-recorded in advance.
[0011] 他方、上述した第 1記録エリアの、少なくとも内周側に位置される、一又は複数の第 2記録エリアにおいては、この制御情報がプリフォーマットされている。カロえて、例え ばデータエリアなど記録領域のうち大部分を占める第 2記録エリアの少なくとも一部 においては、例えば CLV制御方式等の第 2回転速度制御方式 (CLV)の下で、記録 情報の他部が記録可能、又は、予めプリ記録可能である。尚、第 1回転速度制御方 式と、第 2回転速度制御方式 (CLV)とは、例えば、半径位置に応じて単純に速度を 段階的に変更するだけのゾーン CAVと、通常の CAVとの相違程度の、部分的に異 なる回転速度制御方式であってもよい。或いは、例えば CLVと CAVとのように一方 の回転制御方式に設定された再生装置では他方の回転制御方式で記録された情 報記録媒体を再生できない程度に、全体的に異なる回転制御方式であってもよい。 [0011] On the other hand, one or more first recording areas located at least on the inner circumference side of the first recording area described above. In the two recording areas, this control information is preformatted. For example, at least a part of the second recording area that occupies most of the recording area such as the data area is recorded in addition to the recording information under the second rotational speed control method (CLV) such as the CLV control method. Can be recorded, or pre-recordable. The first rotation speed control method and the second rotation speed control method (CLV) are, for example, a zone CAV in which the speed is simply changed stepwise according to the radial position, and a normal CAV. Partially different rotational speed control methods may be used. Or, for example, a playback device that is set to one rotation control method such as CLV and CAV has a rotation control method that is entirely different to the extent that an information recording medium recorded by the other rotation control method cannot be played back. May be.
[0012] 一般的な市販の情報記録装置は、例えば光ディスク等の情報記録媒体に対して、 例えば CLV制御方式等の第 2回転速度制御方式 (CLV)の下でのみ、記録情報を 記録可能である。従って、例えば、 CAV制御方式等の第 1回転速度制御方式 (CAV[0012] A general commercially available information recording apparatus can record recorded information only on an information recording medium such as an optical disc, for example, under a second rotational speed control method (CLV) such as a CLV control method. is there. Therefore, for example, the first rotation speed control method (CAV
)の下で情報が記録された第 1記録エリアにおいて、例えば、暗号化情報等の記録 情報の一部を正確に追記録又は書き換え記録を行うことは困難である。具体的にはIn the first recording area where information is recorded under (), for example, it is difficult to accurately additionally record or rewrite a part of the recorded information such as encrypted information. In particular
、暗号化情報等の記録情報の一部を構成する所望の長さの記録マークを、適切な回 転速度制御方式の下で、正確な位置に記録することは、殆ど又は完全に不可能であ る。 It is almost impossible or impossible to record a recording mark of a desired length that constitutes a part of recording information such as encrypted information at an accurate position under an appropriate rotational speed control method. is there.
[0013] 特に、本発明によれば、第 2記録エリアにおける半径位置とアドレスとの関係は、第 1記録エリアが存在しないと共に、第 2回転制御方式 (CLV)により制御情報がプリフ ォーマットされる場合における、半径位置とアドレスとの所定の関係と、略同一である 。ここに、発明に係る「略同一」とは、完全に同一であること意味すると共に、所定の許 容範囲内に収まる程度に等価であることを意味するようにしてもよい。特に、この境界 点は、第 1方式エリアと、第 2方式エリアとの境界を示す位置であってもよいし、第 1記 録エリアと、第 2記録エリアとの境界を示す位置であってもよい。従って、この境界点 におけるアドレスの不連続性、又は連続性に基づいて、例えば電子配信先でありコピ 一の行われる対象となる情報記録媒体は、正当な記録型の情報記録媒体である力 又は違法なコピーが行われた情報記録媒体であるか否かを、より簡便且つ的確に識 別することが可能である。 [0014] 以上より、記録型の情報記録媒体において、市販の情報記録装置によって、例え ば、第 1記録エリアに予めプリ記録されている記録情報の一部を、意図しない情報へ 改ざんすることは殆ど又は完全にできなくなる。カロえて、例えば、第 1記録エリアに違 法な暗号ィ匕情報等の意図しない情報を記録することは殆ど又は完全にできなくなる。 [0013] In particular, according to the present invention, the relationship between the radial position and the address in the second recording area is such that the first recording area does not exist and the control information is preformatted by the second rotation control method (CLV). In this case, the predetermined relationship between the radial position and the address is substantially the same. Here, “substantially the same” according to the invention may mean that they are completely the same, and may be equivalent to the extent that they fall within a predetermined allowable range. In particular, this boundary point may be a position indicating the boundary between the first method area and the second method area, or a position indicating the boundary between the first recording area and the second recording area. Also good. Therefore, based on the discontinuity or continuity of the address at this boundary point, for example, the information recording medium that is the electronic distribution destination and the target of the copying is the power of being a legitimate recording type information recording medium or It is possible to more easily and accurately identify whether the information recording medium has been illegally copied. [0014] As described above, in a recording type information recording medium, for example, a part of recorded information pre-recorded in the first recording area in advance by a commercially available information recording apparatus may be altered to unintended information. Almost or completely impossible. For example, unintended information such as illegal encryption key information can be recorded almost or completely in the first recording area.
[0015] その結果、例えば、第 1記録エリアに記録可能な暗号化情報等の記録情報の一部 の機密性を高く保持する、即ち、セキュアな状態にすることが可能となる。よって、暗 号化情報等の記録情報の一部の違法なコピーが行われた記録型の情報記録媒体 を作成又は製造することは殆ど又は完全に不可能となる。  As a result, for example, it is possible to maintain a high confidentiality of a part of recording information such as encrypted information that can be recorded in the first recording area, that is, to secure the information. Therefore, it becomes almost or completely impossible to create or manufacture a recording type information recording medium in which a part of the recording information such as encryption information is illegally copied.
[0016] 力！]えて、本発明に係る情報記録媒体を製造する際に、次のような利益を享受するこ とが可能である。即ち、記録領域の全体において、例えばゥォブル等の制御情報が プリフォーマットされ、第 2回転速度制御方式によって記録情報を記録するための第 2記録エリアと備える情報記録媒体を製造する一般的なマスタリング装置によって、 例えばゥォブル等の制御情報の振幅を変化させることで、本発明に係る情報記録媒 体を簡便且つ適切に製造することが可能である。言い換えると、一般的なマスタリン グ装置は、第 1回転速度制御方式 (CAV)によって記録情報を記録するための第 1記 録エリアを形成するために、振幅をゼロとした制御情報をプリフォーマットさせる（又は [0016] Power! In addition, when manufacturing the information recording medium according to the present invention, the following benefits can be obtained. That is, a general mastering device that manufactures an information recording medium provided with a second recording area for recording the recording information by the second rotational speed control method in which control information such as wobble is preformatted in the entire recording area Thus, for example, by changing the amplitude of control information such as wobble, it is possible to easily and appropriately manufacture the information recording medium according to the present invention. In other words, a general mastering device preformats control information with an amplitude of zero in order to form a first recording area for recording information by the first rotational speed control method (CAV). (Or
、制御情報をプリフォーマットさせな 、ようにする)。 Do not preformat the control information).
[0017] 本発明の情報記録媒体の一の態様では、前記第 1回転速度制御方式 (CAV)は、 少なくとも一定区間は角速度を一定とする回転速度制御方式であり、前記第 2回転 速度制御方式 (CLV)は線速度を一定とする回転速度制御方式である。  In one aspect of the information recording medium of the present invention, the first rotational speed control system (CAV) is a rotational speed control system in which the angular speed is constant at least in a certain section, and the second rotational speed control system (CLV) is a rotational speed control method in which the linear velocity is constant.
[0018] この態様によれば、角速度、又は線速度を一定とする回転速度制御方式に基づい て、第 1方式エリア (又は第 1記録エリア）と、第 2方式エリア (又は第 2記録エリア）との 境界点における境界アドレスを、より高精度に、不連続、又は連続にさせることが可 能である。  [0018] According to this aspect, the first method area (or the first recording area) and the second method area (or the second recording area) are based on the rotational speed control method in which the angular velocity or the linear velocity is constant. It is possible to make the boundary address at the boundary point between and discontinuous or continuous with higher accuracy.
[0019] 本発明の情報記録媒体の他の態様では、前記第 1回転速度制御方式 (CAV)によ り記録された第 1方式エリアと、前記第 2回転速度制御方式により記録された第 2方 式エリアとの境界点においては、線速度を一定とする回転制御方式 (CLV)により前 記制御情報がプリフォーマットされる場合における、半径位置とアドレスとの前記所定 の関係を満足する。 In another aspect of the information recording medium of the present invention, a first method area recorded by the first rotation speed control method (CAV) and a second method recorded by the second rotation speed control method. At the boundary point with the method area, the predetermined position between the radial position and the address when the control information is preformatted by the rotation control method (CLV) in which the linear velocity is constant is used. Satisfy the relationship.
[0020] この態様によれば、第 1方式エリア (又は第 1記録エリア）と、第 2方式エリア (又は第 2記録エリア）との境界点における境界アドレスを、線速度を一定とする回転制御方 式 (CLV)に基づいて、より高精度に、不連続、又は連続にさせることが可能である。  [0020] According to this aspect, the rotation control is performed so that the boundary velocity at the boundary point between the first method area (or the first recording area) and the second method area (or the second recording area) is a constant linear velocity. Based on the method (CLV), it is possible to make it discontinuous or continuous with higher accuracy.
[0021] 本発明の情報記録媒体の他の態様では、前記記録情報の一部は、前記第 1回転 速度制御方式 (CAV)に基づいて、前記第 1記録エリアと前記第 2記録エリアとを跨つ て、記録されている。  [0021] In another aspect of the information recording medium of the present invention, a part of the recording information includes the first recording area and the second recording area based on the first rotational speed control method (CAV). It is recorded across.
[0022] この態様によれば、後述される情報記録装置は、例えばゥォブル等の制御情報が プリフォーマットされている所定の長さの第 2記録エリアにおいて、クロック情報やアド レス情報を、取得し、当該情報記録装置が保持する記録クロックと同期させる（ロック させる）ことが可能である。この結果、後述される情報記録装置は、第 1回転速度制御 方式 (CAV)に基づいて、記録情報の一部を、より高精度に第 1記録エリアに加えて、 第 2記録エリアに記録することが可能である。  [0022] According to this aspect, the information recording apparatus described later acquires clock information and address information in the second recording area having a predetermined length in which control information such as wobble is preformatted. It is possible to synchronize (lock) with the recording clock held by the information recording apparatus. As a result, the information recording apparatus described later records a part of the recording information in the second recording area with higher accuracy in addition to the first recording area based on the first rotational speed control method (CAV). It is possible.
[0023] 本発明の情報記録媒体の他の態様では、前記境界点は、前記境界点の前後に位 置される記録領域における物理記録単位は、連続して 、る。  [0023] In another aspect of the information recording medium of the present invention, the boundary points have a continuous physical recording unit in a recording area positioned before and after the boundary point.
[0024] この態様によれば、例えばゥォブル等の物理記録単位に基づいて、後述される情 報記録装置による、記録又は再生処理が行われる際の、トラッキングサーボを安定さ せ、サーボ特性を向上させることが可能である。ここに、本願発明に係る「物理記録 単位」とは、例えばゥォブル等のデータ量を規定可能な記録単位を意味するようにし てもよい。  [0024] According to this aspect, for example, based on a physical recording unit such as a wobble, the tracking servo is stabilized and the servo characteristics are improved when a recording or reproducing process is performed by an information recording apparatus described later. It is possible to make it. Here, the “physical recording unit” according to the present invention may mean a recording unit capable of defining a data amount such as wobble.
[0025] 本発明の情報記録媒体の他の態様では、前記境界点の前後に位置される記録領 域における物理記録単位は、不連続である。  In another aspect of the information recording medium of the present invention, the physical recording units in the recording area located before and after the boundary point are discontinuous.
[0026] この態様によれば、物理記録単位に相当する所定データ量 (例えば 1ECCブロック 又は 1セクタ）の区切りではないことに基づいて、第 1方式エリア (又は第 1記録エリア） と、第 2方式エリア（又は第 2記録エリア）との境界点における境界アドレスを、より高精 度に、不連続にさせることが可能である。 [0026] According to this aspect, the first method area (or the first recording area) and the second data area are based on the fact that it is not a delimiter of a predetermined amount of data (for example, one ECC block or one sector) corresponding to the physical recording unit. The boundary address at the boundary point with the method area (or the second recording area) can be made discontinuous with higher accuracy.
[0027] 本発明の情報記録媒体の他の態様では、前記物理記録単位は、エラーコードを訂 正することが可能な記録単位である。 [0028] この態様によれば、物理記録単位に相当する所定データ量 (例えば 1ECCブロック 又は 1セクタ）の区切りに基づいて、記録情報を再生する際の再生クロックの連続性を 向上させることが可能である。 In another aspect of the information recording medium of the present invention, the physical recording unit is a recording unit capable of correcting an error code. [0028] According to this aspect, it is possible to improve the continuity of the reproduction clock when reproducing the record information based on a predetermined data amount (for example, one ECC block or one sector) corresponding to the physical recording unit. It is.
[0029] 上述した物理記録単位の態様では、前記物理記録単位は、最小のアドレスが割り 振られた記録単位であるように構成してもよ ヽ。  [0029] In the aspect of the physical recording unit described above, the physical recording unit may be configured to be a recording unit to which a minimum address is allocated.
[0030] このように構成すれば、上述したように、物理記録単位としての最小のアドレスが割 り振られた記録単位の区切りに基づいて、記録情報を再生する際の再生クロックの連 続性を向上させることが可能である。カロえて、例えば 1ECCブロック単位で記録され る情報の欠落を殆ど又は完全になくすことが可能である。  [0030] With this configuration, as described above, the continuity of the reproduction clock when reproducing the recording information based on the division of the recording unit to which the minimum address as the physical recording unit is allocated. It is possible to improve. For example, it is possible to eliminate almost or completely the lack of information recorded in units of 1 ECC block.
[0031] 或いは、上述したように、物理記録単位としての最小のアドレスが割り振られた記録 単位の区切りではないことに基づいて、第 1方式エリア (又は第 1記録エリア）と、第 2 方式エリア（又は第 2記録エリア）との境界点における境界アドレスを、より高精度に、 不連続にさせることが可能である。更に、一般の情報記録再生装置においては、この 境界点で、 ECCエラーを誘発しやすいので、著作権保護のシステムに準拠しない違 法な記録又は再生処理を、より効果的に防止することが可能である。  [0031] Alternatively, as described above, the first method area (or the first recording area) and the second method area are based on the fact that the minimum address as the physical recording unit is not a division of the recording unit. It is possible to make the boundary address at the boundary point with (or the second recording area) discontinuous with higher accuracy. Furthermore, in general information recording and playback devices, ECC errors are likely to be induced at this boundary point, so that illegal recording or playback processing that does not conform to the copyright protection system can be prevented more effectively. It is.
[0032] 本発明の情報記録媒体の他の態様では、一の前記第 1方式エリア (CAV)の内周 側に、一の前記第 2方式エリア（CLV)が位置する際の、一の前記第 1方式エリア（CA V)と、一の前記第 2方式エリア（CLV)との前記境界点の前後に位置される記録領域 における物理記録単位は、連続する。  [0032] In another aspect of the information recording medium of the present invention, when the one second method area (CLV) is located on the inner periphery side of the one first method area (CAV), The physical recording units in the recording area located before and after the boundary point between the first method area (CAV) and one second method area (CLV) are continuous.
[0033] この態様によれば、物理記録単位に基づいて、一の第 1方式エリア（CAV)と、一の 第 2方式エリア（CLV)において、後述される情報記録装置による、記録又は再生処 理が行われる際の、トラッキングサーボを安定させ、サーボ特性を向上させることが可 能である。  [0033] According to this aspect, on the basis of the physical recording unit, in one first method area (CAV) and one second method area (CLV), a recording or reproducing process is performed by an information recording device described later. It is possible to stabilize the tracking servo and improve the servo characteristics when processing is performed.
[0034] 本発明の情報記録媒体の他の態様では、前記境界点では、前記第 1方式エリアの 境界アドレス (セクタアドレス）と、前記第 2方式エリアの境界アドレス (プリアドレス）と は、連続しない。  [0034] In another aspect of the information recording medium of the present invention, at the boundary point, the boundary address (sector address) of the first system area and the boundary address (pre-address) of the second system area are continuous. do not do.
[0035] この態様によれば、この連続しな 、点、即ち、不連続点が存在するか否かを識別す ることで、著作権を保護するためのシステムを実現することが可能である。具体的に は、存在しないと推定される所定のセクタアドレス力 実際に存在しない場合、当該 情報記録媒体は、正当な情報記録媒体であると判定することが可能である。他方、 存在しないと推定される所定のセクタアドレスが、実際には存在した場合、当該情報 記録媒体は、違法な情報記録媒体であると判定することが可能である。 [0035] According to this aspect, it is possible to realize a system for protecting the copyright by identifying whether or not there is a continuous point, that is, a discontinuous point. . Specifically If the predetermined sector address force presumed not to exist does not actually exist, it is possible to determine that the information recording medium is a legitimate information recording medium. On the other hand, if a predetermined sector address that is presumed not to exist actually exists, it is possible to determine that the information recording medium is an illegal information recording medium.
[0036] 或いは、当該情報記録媒体のファイルシステムに、ファイルデータ等の記録情報を 登録する際に、存在しな ヽと推定される所定のセクタアドレスを先頭アドレスとして保 持するファイルデータを登録しておく。このことにより、仮に、例えば CAV制御方式及 び CLV制御方式によって記録処理を行うことが可能な違法な機器が、ファイルデー タ等の記録情報、及びファイルシステムのコピー (複製)を試みても、存在しないと推 定される所定のセクタアドレスを先頭アドレス（開始アドレス）として保持するファイル データを含む記録情報の全てのコピーを、防止することが可能である。  [0036] Alternatively, when recording information such as file data is registered in the file system of the information recording medium, file data that holds a predetermined sector address that is presumed not to exist as a head address is registered. Keep it. As a result, even if an illegal device that can perform recording processing using, for example, the CAV control method and the CLV control method tries to copy (copy) the recorded information such as file data and the file system, It is possible to prevent all copies of recorded information including file data that has a predetermined sector address that is assumed to be nonexistent as the start address (start address).
[0037] 本発明の情報記録媒体の他の態様では、前記第 2記録エリアは、前記境界点から 所定長（16ECC)だけ離れた位置に、前記第 1回転速度制御方式に加えて、又は代 えて、前記第 2回転速度制御方式によって、前記記録情報を記録可能な緩衝エリア を有する。  [0037] In another aspect of the information recording medium of the present invention, the second recording area is located at a position away from the boundary point by a predetermined length (16ECC), in addition to the first rotational speed control method, or instead. In addition, a buffer area capable of recording the recording information by the second rotational speed control method is provided.
[0038] この態様によれば、（i)例えば、記録クロックを発生するための基準クロック信号発 生器を構成する水晶（クリスタル）に起因する、記録クロックの時間精度の誤差、又は (ii)情報記録媒体の信号面におけるトラックピッチのばらつき等によって位置精度の 誤差に基づぐアドレスが示す記録又は再生位置のずれを、緩衝エリアによって、吸 収することが可能である。  [0038] According to this aspect, (i) an error in time accuracy of the recording clock due to, for example, a crystal constituting a reference clock signal generator for generating a recording clock, or (ii) The buffer area can absorb the deviation of the recording or reproducing position indicated by the address based on the positional accuracy error due to the variation of the track pitch on the signal surface of the information recording medium.
[0039] 上述した緩衝エリアの態様では、前記緩衝エリアのデータ量は、所定量 (200ECC) であるように構成してもよ 、。  [0039] In the buffer area mode described above, the data amount of the buffer area may be a predetermined amount (200ECC).
[0040] このように構成すれば、例えば 200ECCブロック等の緩衝エリアによって、より適切 に、位置精度の誤差に基づぐアドレスが示す記録又は再生位置のずれを、緩衝ェ リアによって、吸収することが可能である。  [0040] With this configuration, the buffer area such as the 200 ECC block, for example, more appropriately absorbs the deviation in the recording or reproduction position indicated by the address based on the positional accuracy error by the buffer area. Is possible.
[0041] 本発明の情報記録媒体の他の態様では、前記第 1記録エリア（ゥォブル無し区間） において、所定のデータ（FSや、ダミーデータや、暗号化情報や、その他の情報）が 、更に、プリ記録されている。 [0042] この態様によれば、第 1記録エリア力 例えばユーザデータエリアに含まれると共に 、例えば DVDコンテンツのディスクキー（暗号化情報)等の所定のデータがプリ記録 されている場合、次のような効果を享受することが可能である。即ち、一般の情報記 録再生装置は、例えばディスクキー等の所定のデータがプリ記録されている第 1記録 エリアにおいては、クロック情報としてゥォブル信号を検出することができない。従って 、一般の情報記録再生装置は、例えば DVD— ROM等の再生専用の情報記録媒 体と区別することなぐ当該再生専用の情報記録媒体と概ね同様に、本発明の情報 記録媒体に対して、再生専用の情報記録媒体に対応したアプリケーション等の特別 プログラムを実行することが可能である。ここに本願発明に係る「特別プログラム」とは[0041] In another aspect of the information recording medium of the present invention, in the first recording area (no wobble section), predetermined data (FS, dummy data, encrypted information, and other information) is further provided. Pre-recorded. According to this aspect, when the first recording area force is included in the user data area, for example, and predetermined data such as a disc key (encrypted information) of the DVD content is pre-recorded, for example, It is possible to enjoy various effects. That is, a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in a first recording area in which predetermined data such as a disc key is pre-recorded. Therefore, a general information recording / reproducing apparatus is substantially the same as the reproduction-only information recording medium such as a DVD-ROM that is not distinguished from the reproduction-only information recording medium. It is possible to execute special programs such as applications that support playback-only information recording media. Here is the “special program” according to the present invention.
、例えばディスクキー（暗号ィ匕情報)等の所定のデータに基づいて、例えば DVDコン テンッ等の記録情報を復号ィ匕しつつ再生するプログラムのように、第 1記録エリアに プリ記録された所定のデータが再生可能であることを条件として、所定の再生処理を 行うプログラムを意味する。尚、この特別プログラムは、第 1記録エリアにおいてプリ記 録されてもょ 、し、第 1記録エリア以外の記録領域にぉ 、て記録されるようにしてもよ い。 For example, based on predetermined data such as a disc key (encryption key information), for example, a predetermined program pre-recorded in the first recording area, such as a program for reproducing recorded information such as a DVD content while decrypting it. This means a program that performs a predetermined reproduction process on the condition that the data can be reproduced. This special program may be pre-recorded in the first recording area, or may be recorded in a recording area other than the first recording area.
[0043] 他方で、一般の情報記録再生装置は、第 1記録エリアにおいて、クロック情報として ゥォブル信号を検出することができないので、第 1記録エリアにプリ記録されている暗 号ィ匕情報等の所定のデータを書き換えることは不可能である。従って、例えば、当該 情報記録媒体の著作権保護を実現することが可能である。尚、第 2記録エリア (ゥォ ブル有りエリア）においては、前述したクロック情報としてゥォブル信号を検出すること が可能であるので、一般の記録処理を行うことが可能である。  [0043] On the other hand, since a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in the first recording area, the information such as encryption key information pre-recorded in the first recording area can be detected. It is impossible to rewrite predetermined data. Therefore, for example, copyright protection of the information recording medium can be realized. In the second recording area (the wobbled area), the wobble signal can be detected as the clock information described above, so that general recording processing can be performed.
[0044] その他の効果として、第 1記録エリアは、例えばクロック情報等の制御情報がプリフ ォーマットされていないので、この第 1記録エリアにおいては、一般の情報記録装置 によって、例えば、正当な暗号ィヒシステムに基づぐ暗号化情報等の所定のデータ 力 意図しない違法な情報によって上書きされたり、改ざんされたりすることは殆ど又 は完全になくなる。  [0044] As another effect, since control information such as clock information is not pre-formatted in the first recording area, in this first recording area, for example, a valid encryption system is used by a general information recording device. Predetermined data force such as encryption information based on, almost never or completely being overwritten or altered by unintended illegal information.
[0045] 以上の結果、第 1記録エリアに予めプリ記録された、例えば暗号化情報を含む所定 のデータの機密性を高く保持する、即ち、セキュアな状態にすることが可能となる。よ つて、所定のデータの違法なコピーが行われた記録型情報記録媒体を作成又は製 造することは殆ど又は完全に不可能となる。 As a result of the above, it is possible to maintain high confidentiality of predetermined data pre-recorded in the first recording area, for example, including encrypted information, that is, to be in a secure state. Yo Therefore, it becomes almost or completely impossible to create or manufacture a recordable information recording medium on which illegal copies of predetermined data are made.
[0046] 更に他の効果として、例えば、記録情報を再生する際に、最初にアクセスされ、記 録情報の再生が許可される力否かが判定されるための判定領域 (所謂、再生設定領 域)が、第 1記録エリアに含まれる場合、次のような効果を享受することが可能である 。即ち、第 1記録エリアにゥォブルはプリフォーマットされていないので、従来の再生 機 (一般の情報記録再生装置）は、当該ゥォブルを検出できないので、一般の情報 記録再生装置は、少なくとも判定領域における再生処理において、本発明の情報記 録媒体と、一般的な、例えば DVD— ROM等の再生専用の情報記録媒体とを区別 することができない。この結果、従来の再生機は、一般的な再生専用の情報記録媒 体と同様に、本発明の情報記録媒体に対して、再生処理を行うことが可能である。  [0046] As another effect, for example, when playing back recorded information, a judgment area (so-called playback setting area) for judging whether or not power to permit playback of recorded information is first accessed. Area) is included in the first recording area, it is possible to enjoy the following effects. That is, since the wobble is not pre-formatted in the first recording area, the conventional player (general information recording / reproducing device) cannot detect the wobble. Therefore, the general information recording / reproducing device reproduces at least the judgment area. In processing, the information recording medium of the present invention cannot be distinguished from a general reproduction-only information recording medium such as a DVD-ROM. As a result, the conventional reproducing apparatus can perform the reproducing process on the information recording medium of the present invention in the same manner as a general reproduction-only information recording medium.
[0047] 以上の結果、例えば CSS等の暗号ィ匕システムによって、著作権が保護されたコン テンッを、記録型の情報記録媒体によって、一般のユーザに供給し、供給されたコン テンッを、従来の再生機によって再生処理を行わせることが可能となる。従って、本 発明の情報記録媒体によれば、コンテンツの著作権の保護と、再生互換性の維持と の両立を実現することが可能となる。  [0047] As a result of the above, for example, content protected by a cryptographic system such as CSS is supplied to a general user using a recording-type information recording medium. It becomes possible to perform the reproduction process by the reproduction apparatus. Therefore, according to the information recording medium of the present invention, it is possible to realize both the protection of the copyright of the content and the maintenance of reproduction compatibility.
[0048] 更に他の効果として、第 1記録エリアが、更に、例えばユーザによって記録情報を 記録可能なユーザデータエリアに含まれる場合、次のような効果を享受することが可 能である。即ち、従来の再生機 (一般の情報記録再生装置）は、例えば DVDコンテ ンッのタイトル情報が記録されている第 1記録エリアにおいては、クロック情報としてゥ ォブル信号を検出することができない。従って、一般の情報記録再生装置は、例えば DVD— ROM等の再生専用の情報記録媒体と区別することなぐ当該再生専用の情 報記録媒体と概ね同様に、本発明の情報記録媒体に対して、再生再開処理 (レジュ ーム処理： Resume Operation)を行うことが可能である。ここに、本願発明に係る「再 生再開処理 (レジューム処理)」とは、例えば DVDプレーヤ一等の情報再生装置に おいて、情報記録媒体の再生処理の間に、例えばユーザによって、再生途中で当該 情報記録媒体が取り出され、再度、同一の情報記録媒体が挿入された場合、再生途 中のコンテンツ等の記録情報を、その再生途中から継続して、再度、再生する処理を 意味する。 [0048] As another effect, when the first recording area is further included in, for example, a user data area in which recording information can be recorded by a user, the following effects can be obtained. That is, a conventional player (general information recording / reproducing device) cannot detect a wobble signal as clock information in, for example, a first recording area in which title information of a DVD content is recorded. Accordingly, a general information recording / reproducing apparatus is generally similar to a reproduction-only information recording medium that is not distinguished from a reproduction-only information recording medium such as a DVD-ROM. Playback resume processing (resume processing) can be performed. Here, the “reproduction resume process (resume process)” according to the present invention is an information reproducing apparatus such as a DVD player, for example, during the reproduction process of the information recording medium. When the information recording medium is removed and the same information recording medium is inserted again, the process of replaying the recorded information such as the content being replayed from the middle of the replay is performed again. means.
[0049] 具体的には、この情報再生装置は、先ず (一)再生途中で当該情報記録媒体が取 り出された瞬間に再生していた、記録情報の再生位置を示すアドレス、（二）当該情 報記録媒体にお!、て再生されて!、た記録情報のタイトル情報、又は (三)ユーザデー タエリアの先頭部分に存在する所定の位置を示すデータ列等の、再生途中の記録 情報を特定可能な特定情報を、例えば内部メモリ等の記憶手段にお!、て記憶する。 次に、情報再生装置は、再度、情報記録媒体が挿入された場合に、例えばタイトル 情報等の特定情報が記録されて 、る領域にぉ 、て、 (i)クロック情報としてゥォブル 信号が検出されるか否か、又は、（ii)特定情報を再生可能である力否か、などを判定 する。次に、情報再生装置は、（i)特定情報が記録されている領域においてクロック 情報としてゥォブル信号が検出されな 、場合、又は (ii)例えばタイトル情報等の特定 情報を再生可能である場合、記憶されて ヽる記録情報の再生位置を示すアドレスの 近傍から、再生を再開することが可能である。  [0049] Specifically, the information reproducing apparatus firstly (1) an address indicating the reproduction position of the recorded information that was reproduced at the moment when the information recording medium was removed during reproduction; (2) Recorded information during playback, such as title information of recorded information, or (3) a data string indicating a predetermined position existing at the beginning of the user data area. Is stored in storage means such as an internal memory. Next, when the information recording medium is inserted again, the information reproducing apparatus records, for example, specific information such as title information, and (i) a wobble signal is detected as clock information. Whether or not (ii) the ability to reproduce the specific information. Next, the information reproducing apparatus (i) when a wobble signal is not detected as clock information in an area where the specific information is recorded, or (ii) when specific information such as title information can be reproduced, Playback can be resumed from the vicinity of the address indicating the playback position of the recorded information that is stored.
[0050] この所定のデータに係る態様では、前記所定のデータは、記録情報の暗号化のた めの暗号ィ匕情報であるように構成してもよ 、。  [0050] In the aspect related to the predetermined data, the predetermined data may be configured to be encryption key information for encrypting recorded information.
[0051] このように構成すれば、第 1記録エリアに、ユーザデータエリアに記録されるコンテ ンッ等の記録情報の暗号化に関わる暗号化情報がプリ記録される。この結果、一般 のドライブでは、暗号ィ匕情報を記録できないため、万が一、例えばブランクディスク等 のコンテンツが未記録状態の、当該情報記録媒体が流出しても、コンテンツの違法コ ピーを防止し、著作権保護を実現し、安全性を高めることが可能である。更に、一枚 一枚個別に、暗号ィ匕情報を記録可能であるので、情報記録媒体を一般的に大量販 売するのではなぐ個別使用の用途に限定した、当該情報記録媒体の使用が可能と なる。  [0051] With this configuration, encrypted information related to encryption of recorded information such as content recorded in the user data area is pre-recorded in the first recording area. As a result, encryption information cannot be recorded with a general drive, so if the information recording medium leaks out, for example, if the content such as a blank disc is unrecorded, illegal copying of the content is prevented. It is possible to realize copyright protection and enhance safety. Furthermore, since the encryption key information can be recorded individually, it is possible to use the information recording medium limited to individual use purposes rather than generally mass selling the information recording medium. It becomes.
[0052] この所定のデータに係る態様では、前記所定のデータは、少なくともユーザデータ エリア内にプリ記録されて 、るように構成してもよ 、。  [0052] In the aspect related to the predetermined data, the predetermined data may be configured to be pre-recorded at least in the user data area.
[0053] このように構成すれば、所定のデータがプリ記録されている第 1記録エリア力 ユー ザデータエリアに含まれる場合、 PC用途の暗号ィ匕に用いる暗号化情報等の各種の 情報を、例えば Videoコンテンツ等の記録情報と並列させてプリ記録することが可能 である。この結果、記録情報や記録方法に対応して、各種の様々な用途に、当該情 報記録媒体を使用することが可能となる。 [0053] With this configuration, when the predetermined data is included in the first recording area power user data area in which pre-recording is performed, various types of information such as encryption information used for encryption for PC applications are stored. Can be pre-recorded in parallel with recording information such as video content It is. As a result, the information recording medium can be used for various various purposes in accordance with the recording information and the recording method.
[0054] (情報記録装置）  [0054] (Information recording device)
以下、本発明の情報記録装置について説明する。  The information recording apparatus of the present invention will be described below.
[0055] 上記課題を解決するために、本発明の情報記録装置は、上述した本発明の情報 記録媒体 (但し、各種の態様を含む）に、前記記録情報を記録する情報記録装置で あって、前記記録情報を記録する記録手段と、記録の際に、前記第 1回転速度制御 方式 (CAV)、又は前記第 2回転速度制御方式 (CLV)に設定する設定手段と、前記 第 2記録エリアにおける、前記境界点から所定長 (16ECC)だけ離れた開始位置から 、設定された前記第 2回転速度制御方式 (CLV)によって、前記記録情報の他部を記 録するように前記記録手段を制御する第 1制御手段と、前記第 1記録エリアから前記 第 2記録エリアへと跨って、少なくとも前記開始位置まで、設定された前記第 1回転速 度制御方式 (CAV)によって、前記記録情報の一部を記録するように前記記録手段 を制御する第 2制御手段とを備える。  In order to solve the above problems, an information recording apparatus of the present invention is an information recording apparatus for recording the recording information on the above-described information recording medium of the present invention (including various aspects). Recording means for recording the recording information, setting means for setting the first rotational speed control method (CAV) or the second rotational speed control method (CLV) at the time of recording, and the second recording area The recording means is controlled so as to record the other part of the recording information from the start position separated from the boundary point by a predetermined length (16ECC) by the set second rotational speed control method (CLV). One of the recording information by the first control speed control method (CAV) set from the first control means to the first recording area to at least the start position across the first recording area. Control the recording means to record And a second control means.
[0056] 本発明の情報記録装置によれば、先ず、第 1制御手段の制御下で、記録手段によ つて、第 2記録エリアにおける、境界点力も所定長（例えば 16ECC)だけ離れた開始 位置から、第 2回転速度制御方式 (CLV)に基づいて、記録情報の他部が、 SN比を 良くして、記録される。  [0056] According to the information recording apparatus of the present invention, first, under the control of the first control means, the boundary position force in the second recording area is also separated by a predetermined length (for example, 16ECC) by the recording means. From the second rotational speed control method (CLV), the other part of the recorded information is recorded with an improved SN ratio.
[0057] 次に、第 2制御手段の制御下で、記録手段によって、第 1記録エリアから第 2記録ェ リアへと跨って、少なくとも開始位置まで、前記第 1回転速度制御方式 (CAV)に基づ いて、記録情報の一部が記録される。  [0057] Next, under the control of the second control means, the recording means applies the first rotational speed control method (CAV) from the first recording area to the second recording area to at least the start position. Based on this, a part of the recorded information is recorded.
[0058] この結果、例えばゥォブル等の制御情報がプリフォーマットされて 、る、所定長の第 2記録エリアにおいて、クロック情報やアドレス情報を、取得し、当該情報記録装置が 保持する記録クロックと同期させる（ロックさせる）ことが可能である。カロえて、情報記 録装置は、第 1回転速度制御方式 (CAV)に基づいて、記録情報の一部を、より高精 度に第 1記録エリアに加えて、第 2記録エリアに記録することが可能である。  As a result, for example, control information such as wobble is preformatted, and in the second recording area of a predetermined length, clock information and address information are acquired and synchronized with the recording clock held by the information recording apparatus. It is possible to lock (lock). According to the first rotational speed control method (CAV), the information recording device records a part of the recorded information in the second recording area with higher accuracy in addition to the first recording area. Is possible.
[0059] 尚、上述した本発明の情報記録媒体が有する各種態様に対応して、本発明の情報 記録装置も各種態様を採ることが可能である。 [0060] (情報記録方法） Incidentally, in response to the various aspects of the information recording medium of the present invention described above, the information recording apparatus of the present invention can also adopt various aspects. [0060] (Information recording method)
以下、本発明の情報記録方法について説明する。  Hereinafter, the information recording method of the present invention will be described.
[0061] 上記課題を解決するために、本発明の情報記録方法は、上述した本発明の情報 記録媒体 (但し、各種の態様を含む）に、前記記録情報を記録する記録手段を備え る情報記録装置における情報記録方法であって、請求項 1から 15のうちいずれか一 項に記載の情報記録媒体に、前記記録情報を記録する記録手段を備える情報記録 装置における情報記録方法であって、記録の際に、前記第 1回転速度制御方式 (CA V)、又は前記第 2回転速度制御方式 (CLV)に設定する設定工程と、前記第 2記録 エリアにおける、前記境界点から所定長（16ECC)だけ離れた開始位置から、設定さ れた前記第 2回転速度制御方式 (CLV)によって、前記記録情報の他部を記録する ように前記記録手段を制御する第 1制御工程と、前記第 1記録エリアから前記第 2記 録エリアへと跨って、少なくとも前記開始位置まで、設定された前記第 1回転速度制 御方式 (CAV)によって、前記記録情報の一部を記録するように前記記録手段を制 御する第 2制御工程とを備える。  [0061] In order to solve the above problems, an information recording method of the present invention includes an information recording medium for recording the recording information on the above-described information recording medium of the present invention (including various aspects). An information recording method in a recording apparatus, comprising: a recording unit configured to record the recording information on the information recording medium according to any one of claims 1 to 15; During recording, a setting step for setting the first rotational speed control method (CA V) or the second rotational speed control method (CLV) and a predetermined length (16 ECC) from the boundary point in the second recording area A first control step of controlling the recording means so as to record the other part of the recording information from the starting position separated by a second rotational speed control method (CLV), and the first control step; From the recording area to the second recording area A second control step of controlling the recording means so as to record a part of the recording information by the set first rotational speed control method (CAV) at least up to the start position. .
[0062] 本発明の情報記録方法によれば、上述した本発明の情報記録装置が有する各種 利益を享受することが可能となる。  [0062] According to the information recording method of the present invention, it is possible to receive various benefits of the above-described information recording apparatus of the present invention.
[0063] 尚、上述した本発明の情報記録装置が有する各種態様に対応して、本発明の情報 記録方法も各種態様を採ることが可能である。  [0063] Incidentally, in response to the various aspects of the information recording apparatus of the present invention described above, the information recording method of the present invention can also adopt various aspects.
[0064] (コンピュータプログラム）  [0064] (Computer program)
以下、本発明のコンピュータプログラムについて説明する。  Hereinafter, the computer program of the present invention will be described.
[0065] 上記課題を解決するために、本発明の記録制御用のコンピュータプログラムは、上 述した本発明の情報記録装置 (但し、その各種態様を含む）に備えられたコンビユー タを制御する記録制御用のコンピュータプログラムであって、該コンピュータを、前記 記録手段、前記設定手段、前記第 1制御手段、及び、前記第 2制御手段のうち少なく とも一部として機能させる。  [0065] In order to solve the above problems, a computer program for recording control of the present invention is a recording for controlling a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof). A computer program for control, which causes the computer to function as at least part of the recording unit, the setting unit, the first control unit, and the second control unit.
[0066] 本発明に係るコンピュータプログラムによれば、当該コンピュータプログラムを格納 する ROM、 CD-ROM, DVD-ROM,ハードディスク等の記録媒体から、当該コ ンピュータプログラムをコンピュータに読み込んで実行させれば、或いは、当該コンビ ユータプログラムを、通信手段を介してコンピュータにダウンロードさせた後に実行さ せれば、上述した本発明の情報記録装置を比較的簡単に実現できる。 [0066] According to the computer program of the present invention, if the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer, Or the combination If the user program is executed after being downloaded to a computer via communication means, the above-described information recording apparatus of the present invention can be realized relatively easily.
[0067] 尚、上述した本発明の情報記録装置における各種態様に対応して、本発明の各コ ンピュータプログラムも各種態様を採ることが可能である。  [0067] Incidentally, in response to the various aspects of the information recording apparatus of the present invention described above, each computer program of the present invention can also adopt various aspects.
[0068] 上記課題を解決するために、コンピュータ読取可能な媒体内のコンピュータプログ ラム製品は、上述した本発明の情報記録装置 (但し、その各種態様を含む）に備えら れたコンピュータにより実行可能なプログラム命令を明白に具現ィ匕し、該コンピュータ を、前記記録手段、前記設定手段、前記第 1制御手段、及び、前記第 2制御手段の うち少なくとも一部として機能させる。  [0068] In order to solve the above problems, a computer program product in a computer-readable medium can be executed by a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof). The program instruction is clearly embodied, and the computer is caused to function as at least part of the recording means, the setting means, the first control means, and the second control means.
[0069] 本発明のコンピュータプログラム製品によれば、当該コンピュータプログラム製品を 格納する ROM、 CD-ROM, DVD-ROM,ハードディスク等の記録媒体から、当 該コンピュータプログラム製品をコンピュータに読み込めば、或いは、例えば伝送波 である当該コンピュータプログラム製品を、通信手段を介してコンピュータにダウン口 ードすれば、上述した本発明の情報記録装置を比較的容易に実施可能となる。更に 具体的には、当該コンピュータプログラム製品は、上述した本発明の情報記録装置と して機能させるコンピュータ読取可能なコード (或いはコンピュータ読取可能な命令） 力 構成されてよい。  [0069] According to the computer program product of the present invention, the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or For example, if the computer program product, which is a transmission wave, is downloaded to a computer via communication means, the information recording apparatus of the present invention described above can be implemented relatively easily. More specifically, the computer program product may comprise a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above.
[0070] (他の情報記録媒体）  [0070] (Other information recording media)
以下、本発明の情報記録媒体について説明する。  Hereinafter, the information recording medium of the present invention will be described.
[0071] 上記課題を解決するために、本発明の他の情報記録媒体は、記録情報を記録又 は再生するための、クロック情報及びアドレス情報のうち少なくとも一方である検出可 能な制御情報がプリフォーマットされていない第 1記録エリアと、前記制御情報がプリ フォーマットされた一又は複数の第 2記録エリアと、を備え、前記第 1記録エリアにお いては、第 1回転速度制御方式に基づいて前記記録情報の一部が記録可能であり、 前記第 2記録エリアは、第 2回転速度制御方式に基づく制御情報がプリフォーマット されており、所定位置に存在する前記第 1記録エリアを挟む 2つの前記第 2記録エリ ァにおける半径位置とアドレスとの関係は、前記第 1記録エリアが存在しないと共に、 前記第 2回転制御方式 (CLV)により前記制御情報がプリフォーマットされる場合に おける、半径位置とアドレスとの所定の関係と、略同一である。 In order to solve the above problems, another information recording medium of the present invention has detectable control information that is at least one of clock information and address information for recording or reproducing the recorded information. A first recording area that is not preformatted, and one or a plurality of second recording areas in which the control information is preformatted, wherein the first recording area is based on a first rotational speed control method. A part of the recording information can be recorded, and the second recording area is preformatted with control information based on the second rotational speed control method, and sandwiches the first recording area existing at a predetermined position 2 The relationship between the radial position and the address in each of the two second recording areas is that the first recording area does not exist and the control information is pre-formed by the second rotation control method (CLV). When In this case, the predetermined relationship between the radial position and the address is substantially the same.
[0072] 本発明の他の情報記録媒体によれば、例えば第 1記録エリアと、第 1記録エリアを 挟む 2つの第 2記録エリアにおける境界点におけるアドレスの不連続性、又は連続性 に基づ!/、て、例えば電子配信先でありコピーの行われる対象となる情報記録媒体は 、正当な記録型の情報記録媒体であるか、又は違法なコピーが行われた情報記録 媒体であるか否かを、より簡便且つ高精度に識別することが可能である。  [0072] According to another information recording medium of the present invention, for example, based on address discontinuity or continuity at a boundary point between a first recording area and two second recording areas sandwiching the first recording area. ! /, For example, whether the information recording medium that is the electronic distribution destination and to be copied is a legitimate recording type information recording medium or an illegally copied information recording medium Can be identified more easily and with high accuracy.
[0073] 本発明の他の情報記録媒体の一の態様では、前記記録情報の一部が前記第 1回 転速度制御方式 (CAV)に基づいて前記第 1記録エリアと前記第 2記録エリアとを跨 つて記録されており、前記第 1回転速度制御方式 (CAV)により記録された第 1方式ェ リアと、前記第 1方式エリアに続く前記第 2回転速度制御方式により記録された第 2方 式エリアとの境界点前後に位置される記録領域における物理記録単位は、連続して いる。  [0073] In one aspect of the other information recording medium of the present invention, a part of the recording information is based on the first rotation speed control method (CAV), and the first recording area and the second recording area The first method area recorded by the first rotational speed control method (CAV) and the second method recorded by the second rotational speed control method following the first method area. The physical recording units in the recording area located before and after the boundary point with the formula area are continuous.
[0074] この態様によれば、例えば第 1記録エリアと、第 1記録エリアを挟む 2つの第 2記録 エリアにおける境界点におけるアドレスの連続性に基づ 、て、例えば電子配信先で ありコピーの行われる対象となる情報記録媒体は、正当な記録型の情報記録媒体で あるか、又は違法なコピーが行われた情報記録媒体である力否かを、より簡便且つ 高精度に識別することが可能である。  [0074] According to this aspect, for example, based on the continuity of the addresses at the boundary points between the first recording area and the two second recording areas sandwiching the first recording area, for example, the electronic distribution destination and the copy It is possible to more easily and accurately identify whether the information recording medium to be performed is a legitimate recording type information recording medium or an information recording medium on which illegal copying has been performed. Is possible.
[0075] 本発明の他の情報記録媒体の他の態様では、前記記録情報の一部が前記第 1回 転速度制御方式 (CAV)に基づいて前記第 1記録エリアと前記第 2記録エリアとを跨 つて記録されており、前記第 1回転速度制御方式 (CAV)により記録された第 1方式ェ リアと、前記第 1方式エリアに続く前記第 2回転速度制御方式により記録された第 2方 式エリアとの境界点前後に位置される記録領域における物理記録単位は、連続して いない。  [0075] In another aspect of the other information recording medium of the present invention, a part of the recording information is based on the first rotation speed control method (CAV) and the first recording area and the second recording area The first method area recorded by the first rotational speed control method (CAV) and the second method recorded by the second rotational speed control method following the first method area. The physical recording units in the recording area located before and after the boundary with the formula area are not continuous.
[0076] この態様によれば、例えば第 1記録エリアと、第 1記録エリアを挟む 2つの第 2記録 エリアにおける境界点におけるアドレスの不連続性に基づいて、例えば電子配信先 でありコピーの行われる対象となる情報記録媒体は、正当な記録型の情報記録媒体 であるか、又は違法なコピーが行われた情報記録媒体である力否かを、より簡便且 つ高精度に識別することが可能である。 [0077] 本発明のこのような作用及び他の利得は次に説明する実施例から明らかにされる。 According to this aspect, for example, based on the discontinuity of the address at the boundary point between the first recording area and the two second recording areas sandwiching the first recording area, for example, the electronic distribution destination and the copy line The target information recording medium can be identified simply and with high accuracy as to whether the information recording medium is a legitimate recording type information recording medium or an illegally copied information recording medium. Is possible. [0077] These effects and other advantages of the present invention will become apparent from the embodiments described below.
[0078] 以上説明したように、本発明の情報記録媒体によれば、第 1記録エリア、及び、第 2 記録エリアを備える。この結果、例えば、第 1記録エリアに記録可能な暗号化情報等 の記録情報の一部の機密性を高く保持する、即ち、セキュアな状態にすることが可能 となる。よって、暗号ィ匕情報等の記録情報の一部の違法なコピーが行われた記録型 の情報記録媒体を作成又は製造することは殆ど又は完全に不可能となる。 As described above, according to the information recording medium of the present invention, the first recording area and the second recording area are provided. As a result, for example, it is possible to maintain a high confidentiality of a part of recording information such as encrypted information that can be recorded in the first recording area, that is, a secure state. Therefore, it becomes almost or completely impossible to create or manufacture a recording type information recording medium in which a part of the recording information such as encryption key information is illegally copied.
[0079] また、本発明の情報記録装置及び方法によれば、記録手段、設定手段及び工程、 第 1制御手段及び工程、並びに、第 2制御手段及び工程を備える。この結果、例え ば、第 1記録エリアに記録可能な暗号化情報等の記録情報の一部の機密性を高く保 持する、即ち、セキュアな状態にすることが可能となる。よって、暗号化情報等の記録 情報の一部の違法なコピーが行われた記録型の情報記録媒体を作成又は製造する ことは殆ど又は完全に不可能となる。 [0079] Further, according to the information recording apparatus and method of the present invention, a recording means, a setting means and a process, a first control means and a process, and a second control means and a process are provided. As a result, for example, it becomes possible to keep a part of the recording information such as encrypted information that can be recorded in the first recording area highly confidential, that is, to be in a secure state. Therefore, it becomes almost or completely impossible to create or manufacture a record-type information recording medium in which a part of recorded information such as encrypted information is illegally copied.
[0080] 更に、また、本発明のコンピュータプログラムによれば、コンピュータを上述した本発 明の情報記録装置として機能させるので、上述した、情報記録媒体に対して、情報 記録装置をして、例えば、第 1記録エリアに記録可能な暗号化情報等の記録情報の 一部の機密性を高く保持する、即ち、セキュアな状態にすることが可能となる。よって 、暗号化情報等の記録情報の一部の違法なコピーが行われた記録型の情報記録媒 体を作成又は製造することは殆ど又は完全に不可能となる。 [0080] Furthermore, according to the computer program of the present invention, since the computer functions as the above-described information recording apparatus of the present invention, the information recording apparatus is used as the information recording medium described above, for example, Therefore, it is possible to maintain a high confidentiality of a part of the recording information such as encrypted information that can be recorded in the first recording area, that is, to secure the information. Therefore, it becomes almost or completely impossible to create or manufacture a recording-type information recording medium in which a part of recording information such as encrypted information is illegally copied.
図面の簡単な説明  Brief Description of Drawings
[0081] [図 1]本発明の情報記録媒体の実施例に係る複数の記録領域を有する光ディスクの 基本構造を示した概略平面図、及び、該概略平面図に対応付けられた、その半径方 向における記録領域構造の図式的概念図である。  FIG. 1 is a schematic plan view showing a basic structure of an optical disc having a plurality of recording areas according to an embodiment of an information recording medium of the present invention, and a radial direction associated with the schematic plan view. FIG. 2 is a schematic conceptual diagram of a recording area structure in a direction.
[図 2]本発明の情報記録媒体の実施例に係る光ディスクの記録面における部分拡大 斜視図である。  FIG. 2 is a partially enlarged perspective view of a recording surface of an optical disc according to an embodiment of the information recording medium of the present invention.
[図 3]本発明の情報記録媒体の実施例に係る光ディスクの記録領域と、当該記録領 域の位置を特定可能なアドレスとの関係を示した概念的グラフである。  FIG. 3 is a conceptual graph showing the relationship between a recording area of an optical disc according to an embodiment of the information recording medium of the present invention and an address that can specify the position of the recording area.
[図 4]本発明の情報記録媒体の実施例に係る光ディスクにおいてグルーブトラックの ゥォブリング力 得られる記録時に必要なクロック情報及びアドレス情報を示した図式 的な一及び他の概念図（図 4 (a)から図 4 (d) )である。 FIG. 4 is a diagram showing clock information and address information necessary for recording that can be obtained with a groove track wobbling force in an optical disc according to an embodiment of the information recording medium of the present invention. One and other conceptual diagrams (Figs. 4 (a) to 4 (d)).
圆 5]本発明の情報記録媒体の実施例に係る光ディスクの第 1記録エリアの物理的 構造の一及び他の具体例における第 1記録エリア力 得られるゥォブル信号を示した 図式的一及び他の概念図（図 5 (a)から図 5 (d) )である。 圆 5] Schematic one and other showing the wobble signal obtained for the first recording area force in one and other specific examples of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention It is a conceptual diagram (Fig. 5 (a) to Fig. 5 (d)).
[図 6]本発明の第 1記録エリアの一具体例であるゥォブル (Wobble)無し区間の記録 領域、及び、本発明の第 2記録エリアの一具体例であるゥォブル (Wobble)有り区間 の記録領域との配置関係を概念的に示す模式図である。  [Fig. 6] Recording area of wobbled section, which is a specific example of the first recording area of the present invention, and recording section of wobble, which is a specific example of the second recording area of the present invention. It is a schematic diagram which shows notionally the arrangement | positioning relationship with an area | region.
[図 7]—般の光ディスクにお ヽて、 CAV制御方式が適用された場合の各種特性を図 式的に示した概念図である。  FIG. 7 is a conceptual diagram schematically showing various characteristics when a CAV control method is applied to a general optical disc.
[図 8]—般の光ディスクにおいて、 CLV制御方式が適用された場合の各種特性を図 式的に示した概念図である。  FIG. 8 is a conceptual diagram schematically showing various characteristics of a general optical disc when the CLV control method is applied.
[図 9]一般の光ディスクにお 、て、 CAV制御方式が適用された場合のゥォブルの波 長と、 CLV制御方式が適用された場合のゥォブルの波長とを図式的に比較した模式 図（図 9 (a) )、及び、一般の光ディスクにおけるゥォブルの波長と 1ECCブロックとの 関係を図式的に示した概念図である。  [Fig. 9] A schematic diagram schematically comparing the wobble wavelength when the CAV control method is applied to the wobble wavelength when the CLV control method is applied to a general optical disc (Fig. 9). 9 (a)) is a conceptual diagram schematically showing the relationship between the wobble wavelength and 1ECC block in a general optical disc.
圆 10]本発明の第 1方式エリア、及び第 2方式エリアと、アドレスとの関係を図式的に 示した一のグラフ（図 10 (a) )、並びに、本発明の第 1方式エリア、及び第 2方式エリア と、情報記録媒体の回転数との関係を図式的に示した一のグラフ（図 10 (b) )である 圆 11]本発明の第 1方式エリア、及び第 2方式エリアと、アドレスとの関係を図式的に 示した他のグラフ（図 11 (a) )、並びに、本発明の第 1方式エリア、及び第 2方式エリア と、情報記録媒体の回転数との関係を図式的に示した他のグラフ（図 11 (b) )である 圆 10] One graph (Fig. 10 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the address, as well as the first method area of the present invention, and Fig. 10 (b) is a graph schematically showing the relationship between the second method area and the rotation speed of the information recording medium. [11] The first method area and the second method area of the present invention , Another graph schematically showing the relationship with the address (FIG. 11 (a)), and the relationship between the first method area and the second method area of the present invention and the rotational speed of the information recording medium. Is another graph (Figure 11 (b))
[図 12]本発明の情報記録装置に係る情報記録再生装置の全体構成を示すブロック 図である。 FIG. 12 is a block diagram showing an overall configuration of an information recording / reproducing apparatus according to the information recording apparatus of the present invention.
[図 13]本実施例に係るプリ記録装置 200におけるプリ記録の動作原理を示したフロ 一チャートである。  FIG. 13 is a flowchart showing the pre-recording operation principle in the pre-recording apparatus 200 according to the present embodiment.
圆 14]本発明の情報記録媒体において、プリ記録される記録領域の遷移を、図式的 に示した記録領域の模式図（図 14 (a)から図 14 (b) )である。 圆 14] In the information recording medium of the present invention, the transition of the pre-recorded recording area is schematically shown. FIG. 14 is a schematic diagram of the recording area shown in FIG. 14 (FIG. 14 (a) to FIG. 14 (b)).
圆 15]本発明の情報記録装置の実施例によるプリ記録の手順の類型を概念的に示 すテーブルである。 15] A table conceptually showing the type of pre-recording procedure according to the embodiment of the information recording apparatus of the present invention.
圆 16]本発明の情報記録媒体に対して、記録動作を行う情報記録装置、並びに、配 信動作を行う情報配信装置を備えた配信システムの全体構成を示したブロック図で ある。 FIG. 16 is a block diagram showing an overall configuration of an information recording apparatus that performs a recording operation and an information distribution apparatus that performs a distribution operation on the information recording medium of the present invention.
[図 17]本発明の情報記録装置、及び、情報配信装置における各種の処理を示したフ ローチャートである。  FIG. 17 is a flowchart showing various processes in the information recording apparatus and information distribution apparatus of the present invention.
[図 18]本発明の第 1方式エリア、及び第 2方式エリアと、情報記録媒体の回転数との 関係を図式的に示した一のグラフ（図 18(a))、並びに、本発明の第 1方式エリア、及 び第 2方式エリアと、アドレスとの関係を図式的に示した模式図（図 18(b))である。 [FIG. 18] A graph (FIG. 18 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the rotational speed of the information recording medium, and the present invention FIG. 19 is a schematic diagram (FIG. 18 (b)) schematically showing the relationship between addresses in the first method area and the second method area.
[図 19]本発明の第 1方式エリア、及び第 2方式エリアと、情報記録媒体の回転数との 関係を図式的に示した他のグラフである。 FIG. 19 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
[図 20]本発明の第 1方式エリア、及び第 2方式エリアと、情報記録媒体の回転数との 関係を図式的に示した他のグラフである。  FIG. 20 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
[図 21]本発明の第 1方式エリア、及び第 2方式エリアと、情報記録媒体の回転数との 関係を図式的に示した他のグラフである。  FIG. 21 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium.
符号の説明 Explanation of symbols
1…センターホール、 ιο···トラック、 11···セクタ、 100···光ディスク、 101···リードイン エリア、 102···データエリア、 103···リードアウトエリア、 106···透明基板、 107···記録 層、 108···反射層、 109···ゥォブル、 150- OPCエリア、 200···情報記録装置、 201 …対物レンズ、 202···光ピックアップ、 203···スピンドルモータ、 204···ヘッドアンプ、 210···総和生成回路、 211···ピットデータ復調回路、 212···ピットデータ訂正回路、 213···ノ ッファ、 214· "インターフェース、 220···プッシュプル信号生成回路、 221··· ローノ スフィルタ、 222···サーボユニット、 227· "RANDテーブル、 250"-CPU、 30 0···情報配信装置、 400…外部ネットワーク、 CK1…第 1クロック信号、 CK2 第 2ク ロック信号、 GT…グルーブトラック、 LT…ランドトラック、 LB…レーザ光、 LPP…ラン ドプリピット、 Key 1…暗号ィ匕情報 (ディスクキーや、ディスクキーセット）、 Key2…暗 号化情報（タイトルキー）、 CDZ…コントロールデータゾーン、 1… Center Hall, ιο ··· Track, 11 ··· Sector, 100 ··· Optical Disc, 101 ··· Lead In Area, 102 ··· Data Area, 103 ··· Lead Out Area, 106 ··· Transparent substrate 107 ··· Recording layer 108 ··· Reflective layer 109 ··· Wobble 150-OPC area 200 ··· Information recording device 201 · Objective lens · 202 · Optical pickup · 203 · Spindle motor, 204 Head amplifier, 210 Total generation circuit, 211 Pit data demodulation circuit, 212 Pit data correction circuit, 213 Knoffer, 214 "interface, 220 ··· Push-pull signal generation circuit, ···························································· Servo unit, 227 · “RAND table, 250” -CPU, 30 0 ··· Information distribution device, 400… CK1 ... 1st clock signal, CK2 2nd clock signal, GT ... Groove track, LT ... LA De track, LB ... laser light, LPP ... run Dopuripitto, Key 1 ... encryption I spoon information (or a disk key, disc key set), Key2 ... dark Encoding information (title key), CDZ ... control data zone,
発明を実施するための最良の形態  BEST MODE FOR CARRYING OUT THE INVENTION
[0083] 以下、本発明を実施するための最良の形態について実施例毎に順に図面に基づ いて説明する。 Hereinafter, the best mode for carrying out the present invention will be described in each embodiment in order with reference to the drawings.
[0084] (1)情報記録媒体の実施例 (1) Embodiment of information recording medium
次に、図 1から図 11を参照して、本発明の情報記録媒体の実施例について詳細に 説明する。  Next, embodiments of the information recording medium of the present invention will be described in detail with reference to FIGS.
[0085] (1 - 1)基本構成 (物理的な構造）  [0085] (1-1) Basic configuration (physical structure)
先ず、図 1及び図 2を参照して、本発明の情報記録媒体の実施例に係る光ディスク の基本構成について説明する。ここに、図 1は、本発明の情報記録媒体の実施例に 係る複数の記録領域を有する光ディスクの基本構造を示した概略平面図、及び、該 概略平面図に対応付けられた、その半径方向における記録領域構造の図式的概念 図である。図 2は、本発明の情報記録媒体の実施例に係る光ディスクの記録面にお ける部分拡大斜視図である。  First, the basic configuration of an optical disc according to an embodiment of the information recording medium of the present invention will be described with reference to FIG. 1 and FIG. FIG. 1 is a schematic plan view showing the basic structure of an optical disc having a plurality of recording areas according to an embodiment of the information recording medium of the present invention, and the radial direction associated with the schematic plan view. FIG. 2 is a schematic conceptual diagram of a recording area structure in FIG. FIG. 2 is a partially enlarged perspective view on the recording surface of the optical disc according to the embodiment of the information recording medium of the present invention.
[0086] 図 1に示されるように、光ディスク 100は、例えば、 DVDと同じく直径 12cm程度の ディスク本体上の記録面に、センターホール 1を中心として本実施例に係る（i)パワー キャリブレーションエリア PCA、（ii)レコーディングマネージメントエリア（Recording Ma nagement Area) RMA、 (iii)コントローノレデータゾーン (Control Data Zone) CDZを 有するリードインエリア 101、（iv)データエリア 102、（V)リードアウトエリア 103を備え て構成されている。そして、光ディスク 100の、図示しない例えば透明基板に、少なく とも一つの記録層が積層されている。そして、この記録層の各記録領域には、例えば 、センターホール 1を中心にスパイラル状或いは同心円状に、例えば、グルーブトラッ ク及びランドトラック等のトラック 50が交互に設けられている。また、このトラック 50上に は、記録情報 (データ）が ECCブロック 51という単位で分割されて記録される。 ECC ( Error Correction Code)ブロック 51は、記録情報のエラー訂正が可能な記録情報の 管理単位である。特に、本実施例に係る光ディスクは、記録型情報記録媒体におけ る記録領域と、再生専用型情報記録媒体における再生専用領域 (再生専用エリア）と を併せ持つ、所謂、ノ、イブリツド型の光ディスクであるようにしてもよい。具体的には、 データエリアの内周部に、本発明の第 1記録エリアを備えるようにしてもよい。尚、本 発明の第 1記録エリアの詳細な説明については、後述される。 As shown in FIG. 1, the optical disc 100 is, for example, (i) power calibration area according to the present embodiment centered on the center hole 1 on the recording surface of the disc main body having a diameter of about 12 cm as in the DVD. PCA, (ii) Recording Management Area RMA, (iii) Control Data Zone Lead-in area 101 with CDZ, (iv) Data area 102, (V) Lead-out area 103 It is configured with. Then, at least one recording layer is laminated on a transparent substrate (not shown) of the optical disc 100, for example. In each recording area of this recording layer, for example, tracks 50 such as a groove track and a land track are alternately provided in a spiral shape or a concentric shape with the center hole 1 as the center. On the track 50, recorded information (data) is divided and recorded in units of ECC blocks 51. ECC (Error Correction Code) block 51 is a record information management unit capable of error correction of record information. In particular, the optical disc according to the present embodiment is a so-called no-briddle type optical disc having both a recording area in a recordable information recording medium and a read-only area (playback-only area) in a read-only information recording medium. There may be. In particular, The first recording area of the present invention may be provided on the inner periphery of the data area. A detailed description of the first recording area of the present invention will be described later.
[0087] より詳細には、図 2に示されるように、本実施例では、光ディスク 100は、ディスク状 の透明基板 106の下側にぉ 、て、情報記録面を構成する色素型又は相変化型の記 録層 107が積層され、更にその下側に、反射層 108が積層されている。記録層 107 の表面力 なる情報記録面には、グルーブトラック GT及びランドトラック LTが交互に 形成されている。尚、光ディスク 100の記録及び再生時には、例えば図 2に示したよう に、透明基板 106を介してグルーブトラック GT上に、レーザ光 LBが照射される。例 えば、記録時には、記録レーザパワーでレーザ光 LBが照射されることで、記録デー タに応じて、記録層 107へ記録が実施される。他方、再生時には、記録レーザパワー よりも弱い再生レーザパワーでレーザ光 LBが照射されることで、記録層 107へ記録 された記録データの読出しが実施される。尚、グルーブトラック GT、ランドトラック LT 、ゥォブル 109、及び、ランドプリピット LPP等については後述に詳細に説明される。  More specifically, as shown in FIG. 2, in this embodiment, the optical disc 100 is located below the disc-like transparent substrate 106, and thus the dye type or phase change constituting the information recording surface. A recording layer 107 of a mold is laminated, and a reflective layer 108 is further laminated on the lower side. Groove tracks GT and land tracks LT are alternately formed on the information recording surface, which is the surface force of the recording layer 107. Incidentally, at the time of recording and reproduction of the optical disc 100, the laser beam LB is irradiated onto the groove track GT through the transparent substrate 106 as shown in FIG. For example, at the time of recording, recording is performed on the recording layer 107 according to the recording data by irradiating the laser beam LB with the recording laser power. On the other hand, at the time of reproduction, the recording data recorded on the recording layer 107 is read by irradiating the laser beam LB with a reproduction laser power weaker than the recording laser power. The groove track GT, land track LT, wobble 109, land pre-pit LPP, etc. will be described in detail later.
[0088] 特に、データエリア 102には、例えば CSS等の暗号化システムに基づいたタイトル キー等の暗号化情報と、このタイトルキー等の暗号ィ匕情報によって暗号ィ匕された暗 号ィ匕コンテンツが記録される。より具体的には、タイトルキー等の暗号ィ匕情報は、ディ スクキーや、ディスクキーセット等の暗号ィ匕情報によって暗号ィ匕されている。  [0088] In particular, in the data area 102, for example, encryption information such as a title key based on an encryption system such as CSS, and encryption key content encrypted by the encryption key information such as the title key. Is recorded. More specifically, encryption key information such as a title key is encrypted with encryption key information such as a disk key or a disk key set.
[0089] 尚、本発明は、このような 5つのエリアを有する光ディスクには特に限定されない。  Note that the present invention is not particularly limited to an optical disc having such five areas.
例えば、リードインエリア 101、又はリードアウトエリア 103が存在せずとも、以下に説 明するデータ構造等の構築は可能である。また、リードインエリア 101又はリードァゥ ト 103は更に細分ィ匕された構成であってもよい。  For example, even if the lead-in area 101 or the lead-out area 103 does not exist, the data structure described below can be constructed. Further, the lead-in area 101 or the lead-out 103 may be further subdivided.
[0090] (1 - 2)光ディスクの記録領域の位置を特定可能なアドレス  [0090] (1-2) Address that can specify the position of the recording area of the optical disc
次に、図 3を参照して、光ディスクの記録領域と、当該記録領域の位置を特定可能 なアドレスとの関係について説明する。ここに、図 3は、本発明の情報記録媒体の実 施例に係る光ディスクの記録領域と、当該記録領域の位置を特定可能なアドレスとの 関係を示した概念的グラフである。尚、図 3中の縦軸は、例えばセクタ番号やランドプ リピットアドレス等のアドレスの値を示し、横軸は、光ディスクの半径方向の相対的な 位置を示す。また、本願発明に係る「アドレス」の一具体例力 例えば、 LBN (Logical Block Number)、例えば ECCブロックを構成する物理的セクタ番号（セクタ番号）、又 はランドプリピットアドレス（Land Pre Pit Address)によって構成されている。 Next, with reference to FIG. 3, the relationship between the recording area of the optical disc and the address at which the position of the recording area can be specified will be described. FIG. 3 is a conceptual graph showing the relationship between the recording area of the optical disc according to the embodiment of the information recording medium of the present invention and the address at which the position of the recording area can be specified. Note that the vertical axis in FIG. 3 indicates address values such as sector numbers and land pre-pit addresses, for example, and the horizontal axis indicates the relative position in the radial direction of the optical disk. In addition, a specific example of “address” according to the present invention, for example, LBN (Logical Block Number), for example, a physical sector number (sector number) constituting an ECC block, or a land pre-pit address.
[0091] 図 3に示されるように、本発明の情報記録媒体の実施例に係る光ディスク 100の記 録領域は、内周側力 外周側にかけて、前述したように (i)パワーキャリブレーション エリア PCA、（ii)レコーディングマネージメントエリア（Recording Management Area) R MA、（iii)コントロールデータゾーン（Control Data Zone) CDZを有するリードインェ リア 101、（iv)データエリア 102、（V)リードアウトエリア 103を備えて構成されている。 尚、 RMAや、 CDZには、各種の属性管理情報が記録されるようにしてもよい。ここに 、属性管理情報とは、（ii—1)例えば最適記録パワー等の記録特性に関する情報、（ ii- 2)媒体の種類を特定するための属性情報、及び (ii 3)各種の記録領域の位置 を特定するための情報等の、当該情報記録媒体を管理するための各種の情報であ る。 [0091] As shown in FIG. 3, the recording area of the optical disc 100 according to the embodiment of the information recording medium of the present invention is as described above. (I) Power calibration area PCA , (Ii) Recording Management Area RMA, (iii) Lead Data Area 101 with Control Data Zone CDZ, (iv) Data Area 102, and (V) Lead Out Area 103. It is configured. Various attribute management information may be recorded in the RMA or CDZ. Here, the attribute management information includes (ii-1) information on recording characteristics such as optimum recording power, (ii-2) attribute information for specifying the type of medium, and (ii 3) various recording areas. Various information for managing the information recording medium, such as information for identifying the location of the information.
[0092] また、図 3に示されるように、上述した光ディスク 100の記録領域の位置を一義的に 特定可能なアドレス力 例えば、 LBAや物理的セクタ番号 (セクタ番号)である場合、 光ピックアップ力 内周側力も外周側へ移動するにつれて光ディスク 100の記録領域 におけるアドレスは増加して 、くようにしてもょ 、（図 3中の太実線を参照)。或いは、 記録領域の位置を一義的に特定可能なアドレスが、例えば、ランドプリピットアドレス（ Land Pre Pit Address)である場合、後述される情報記録再生装置の光ピックアップが 、内周側力も外周側へ移動するにつれて光ディスク 100の記録領域におけるアドレス は減少して 、くようにしてもよ!ヽ（図 3中の細点線を参照)。  Further, as shown in FIG. 3, the address power that can uniquely identify the position of the recording area of the optical disc 100 described above, for example, when the LBA or physical sector number (sector number) is used, the optical pickup power The address in the recording area of the optical disc 100 may increase as the inner peripheral side force moves to the outer peripheral side (see the thick solid line in FIG. 3). Alternatively, when the address where the position of the recording area can be uniquely specified is, for example, a land pre-pit address, the optical pickup of the information recording / reproducing apparatus described later has an inner peripheral force on the outer peripheral side. As you move to, the address in the recording area of the optical disc 100 will decrease, and you may try again!
[0093] (1 - 3)クロック情報、及びアドレス情報  [0093] (1-3) Clock information and address information
次に、図 4に加えて前述した図 2を適宜参照して、本発明の情報記録媒体の実施 例に係る光ディスクにおいてグルーブトラックのゥォブリング力 得られる記録時に必 要なクロック情報 (記録クロック)及びアドレス情報 (記録アドレス）につ 、て説明する。 ここに、図 4は、本発明の情報記録媒体の実施例に係る光ディスクにおいてグループ トラックのゥォブリング力 得られる記録時に必要なクロック情報及びアドレス情報を示 した図式的な一及び他の概念図（図 4 (a)から図 4 (d) )である。  Next, referring to FIG. 2 described above in addition to FIG. 4 as appropriate, clock information (recording clock) necessary for recording which can obtain a groove track wobbling force in the optical disc according to the embodiment of the information recording medium of the present invention and Address information (recording address) will be explained. FIG. 4 is a schematic diagram and other conceptual diagrams showing clock information and address information necessary for recording that can be obtained in the wobbling force of the group track in the optical disc according to the embodiment of the information recording medium of the present invention (FIG. 4). Figure 4 (a) to Figure 4 (d)).
[0094] 図 4 (a)、 (b)及び (c)に示すように、本実施例に係る光ディスクにお 、ては、グルー ブトラック GTは、一定の振幅及び空間周波数で揺動されている。即ち、グループトラ ック GTは、ゥォブリング（Wobbling)されており、そのゥォブル (Wobble) 109の周期は 所定値に設定されている。尚、グルーブトラック GTのゥォブル 109を周波数変調や 位相変調など所定の変調方式により変調することによりプリフォーマットアドレス情報 を予め記録するようにしてもょ 、。 [0094] As shown in Figs. 4 (a), (b), and (c), the optical disk according to the present embodiment has a group. The Bratrack GT is oscillated with a constant amplitude and spatial frequency. That is, the group track GT is wobbling, and the period of the wobble 109 is set to a predetermined value. The preformat address information may be recorded in advance by modulating the wobble 109 of the groove track GT by a predetermined modulation method such as frequency modulation or phase modulation.
[0095] 図 4 (b)に示すように、 CD— RZWの場合では、微妙な周波数の変化によって、光 ディスク上の記録アドレスが ATIP (Absolute Time In Pre-groove)信号と呼ばれる絶 対時間情報として組み込まれて 、る。  [0095] As shown in Fig. 4 (b), in the case of CD-RZW, the recording address on the optical disc is called an absolute time in pre-groove (ATIP) signal due to subtle frequency changes. As built in.
[0096] 図 4 (c)に示すように、 DVD—RZWの場合では、ランドトラック LT上にはプリフォ 一マットアドレス情報を示すランドプリピット LPPと呼ばれるアドレスピットが形成されて いる。  [0096] As shown in FIG. 4 (c), in the case of DVD-RZW, address pits called land pre-pits LPP indicating preformat address information are formed on the land track LT.
[0097] 以上説明した 2種類のアドレッシング、即ち、ゥォブル 109並びに ATIP又はランド プリピット LPPにより記録中のディスク回転制御や記録クロックの生成、また記録アド レス等のデータの記録に必要な情報を得ることができる。より具体的には、例えば、 ディスクドライブ等の情報記録装置が、データエリアに書き込むためには、例えば、レ 一ザ光の最適記録パワーや記録ストラテジー等の記録パラメータにカ卩えて、書き込 みに使用する記録クロックと記録アドレスが必要である。  [0097] The two types of addressing described above, ie, wobble 109 and ATIP or land pre-pit LPP, obtain information necessary for recording data such as disk rotation control during recording, generation of a recording clock, and recording address. Can do. More specifically, for example, in order for an information recording device such as a disk drive to write in the data area, for example, the writing is performed in consideration of the recording parameters such as the optimum recording power of the laser light and the recording strategy. The recording clock and recording address used for the recording are required.
[0098] 次に、図 5を参照して、本発明の情報記録媒体の実施例に係る光ディスクの第 1記 録エリアの物理的構造の一及び他の具体例について説明する。ここに、図 5は、本発 明の情報記録媒体の実施例に係る光ディスクの第 1記録エリアの物理的構造の一及 び他の具体例における第 1記録エリア力 得られるゥォブル信号を示した図式的一 及び他の概念図（図 5 (a)から図 5 (d) )である。 Next, with reference to FIG. 5, one and other specific examples of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention will be described. FIG. 5 shows one example of the physical structure of the first recording area of the optical disc according to the embodiment of the information recording medium of the present invention and the wobble signal obtained in the first recording area force in another specific example. It is a schematic diagram and other conceptual diagrams (Fig. 5 (a) to Fig. 5 (d)).
[0099] 本発明の情報記録媒体の実施例に係る光ディスクの一の具体例においては、第 1 記録エリアから、図 5 (a)に示されるようなゥォブル信号 WB1が得られるように、第 1記 録エリアを構成してもよい。より具体的には、記録トラックの方向を基準として、第 1記 録エリアの前方においては、ゥォブルの振幅を小さくさせ、 AM (Amplitude Modulatio n)させる。他方、第 1記録エリアの後方においては、ゥォブルの振幅を大きくさせ、 A Mさせる。特に、振幅が減少し始める時及び増加し始める時の変化は徐々に行うの が好ましい。何故ならば、製造工程のより簡略ィ匕を実現可能だ力もである。より詳細 には、後述される情報記録再生装置におけるコンパレータは、バンドパスフィルタか らのゥォブル信号を検出することができなくなる。 In one specific example of the optical disc according to the embodiment of the information recording medium of the present invention, the first wobble signal WB1 as shown in FIG. 5 (a) is obtained from the first recording area. A recording area may be configured. More specifically, with the direction of the recording track as a reference, the amplitude of the wobble is decreased and AM (Amplitude Modulation) in front of the first recording area. On the other hand, at the rear of the first recording area, the amplitude of the wobble is increased to cause AM. Especially when the amplitude starts to decrease and changes when it starts to increase Is preferred. This is because it is possible to realize a simpler manufacturing process. More specifically, the comparator in the information recording / reproducing apparatus described later cannot detect the wobble signal from the bandpass filter.
[0100] 本発明の情報記録媒体の実施例に係る光ディスクの他の具体例においては、第 1 記録エリアから、図 5 (b)に示されるようなゥォブル信号 WB2が得られるように、第 1記 録エリアを構成してもよい。より具体的には、第 1記録エリアの全ての領域において、 ゥォブルを殆ど又は完全に無くすように構成し、ゥォブル信号 WB2を得られないよう に構成してもよい。但し、製造工程においてより高度な制御が必要となる。この具体 例においても、前述の具体例と同様に情報記録再生装置におけるコンパレータは、 バンドパスフィルタからのゥォブル信号を検出することができなくなる。  In another specific example of the optical disc according to the embodiment of the information recording medium of the present invention, the first wobble signal WB2 as shown in FIG. 5 (b) is obtained from the first recording area. A recording area may be configured. More specifically, in all areas of the first recording area, the wobble may be configured to be almost or completely eliminated so that the wobble signal WB2 cannot be obtained. However, more sophisticated control is required in the manufacturing process. In this specific example as well, the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter, as in the specific example described above.
[0101] 本発明の情報記録媒体の実施例に係る光ディスクの他の具体例においては、第 1 記録エリアから、図 5 (c)に示されるようなゥォブル信号 WB3が得られるように、第 1記 録エリアを構成してもよい。  [0101] In another specific example of the optical disc according to the embodiment of the information recording medium of the present invention, the first wobble signal WB3 as shown in Fig. 5 (c) is obtained from the first recording area. A recording area may be configured.
[0102] より具体的には、第 1記録エリアの全ての領域において、ゥォブルの周波数を、例え ば、 ΙΚΗζから ΙΟΚΗζへと変調させ、 FM (Frequency Modulation)させるように構成 してもよい。尚、 FMにおいては、周波数を 2倍、 5倍等に増加させてもよいし、 1/2 倍、 1Z5倍等と減少させてもよい。この具体例においても、前述の具体例と同様に情 報記録再生装置におけるコンパレータは、バンドパスフィルタからのゥォブル信号を 検出することができなくなる。  [0102] More specifically, the wobble frequency may be modulated from ΙΚΗζ to ΙΟΚΗζ and FM (Frequency Modulation) in all areas of the first recording area. In FM, the frequency may be increased to 2 times, 5 times, etc., or may be reduced to 1/2 times, 1Z5 times, etc. In this specific example as well, the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter in the same way as the above specific example.
[0103] 本発明の情報記録媒体の実施例に係る光ディスクの他の具体例においては、第 1 記録エリアから、図 5 (d)に示されるようなゥォブル信号 WB4が得られるように、第 1記 録エリアを構成してもよい。  In another specific example of the optical disc according to the embodiment of the information recording medium of the present invention, the first wobble signal WB4 as shown in FIG. 5 (d) is obtained from the first recording area. A recording area may be configured.
[0104] より具体的には、第 1記録エリアにおいて、ゥォブルの周波数、振幅、及び、位相の うち少なくとも一つが変調されるように構成してもよい。この具体例においても、前述 の具体例と同様に情報記録再生装置におけるコンパレータは、バンドパスフィルタか らのゥォブル信号を検出することができなくなる。  More specifically, at least one of the wobble frequency, amplitude, and phase may be modulated in the first recording area. In this specific example as well, the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the band pass filter, as in the above specific example.
[0105] 本発明の情報記録媒体の実施例に係る光ディスクの他の具体例においては、図示 しないが、第 1記録エリアにおいては、グルーブトラック等の記録トラック自体を予め 形成しないように構成してもよい。この具体例においても、前述の具体例と同様に情 報記録再生装置におけるコンパレータは、バンドパスフィルタからのゥォブル信号を 検出することができなくなる。 In another specific example of the optical disc according to the embodiment of the information recording medium of the present invention, although not shown, in the first recording area, the recording track itself such as a groove track is stored in advance. You may comprise so that it may not form. In this specific example as well, the comparator in the information recording / reproducing apparatus cannot detect the wobble signal from the bandpass filter in the same way as the above specific example.
[0106] 以上より、第 1記録エリアにおいては、一般の情報記録装置によって、ゥォブルから の信号に基づいて、正確な記録クロック及び記録アドレスが取得されないので、第 1 記録エリアにプリ記録されている、暗号化情報や、ファイルシステムを、違法な意図し ない情報によって上書きすること、及び、意図しない情報へ改ざんすることは殆ど又 は完全にできなくなる。  [0106] As described above, in the first recording area, a general information recording device does not acquire an accurate recording clock and recording address based on a signal from the wobble, so it is pre-recorded in the first recording area. Overwriting encrypted information and file systems with illegal unintentional information and tampering with unintentional information are almost or completely impossible.
[0107] (1 4)詳細構成 (第 1記録エリア、及び第 2記録エリア）  [0107] (1 4) Detailed configuration (first recording area and second recording area)
次に、図 6から図 11を参照して、本発明に係る「第 1記録エリア」、及び「第 2記録ェ リア」を中心とした、一の詳細構成について説明する。  Next, with reference to FIG. 6 to FIG. 11, one detailed configuration centering on the “first recording area” and the “second recording area” according to the present invention will be described.
[0108] (1 4 1)ゥォブル有り区間、及びゥォブル無し区間  [0108] (1 4 1) Section with and without wobble
先ず、図 6を参照して、本発明に係る「第 1記録エリア」の具体例、及び「第 2記録ェ リア」の具体例を中心とした、一の詳細構成について説明する。ここに、図 6は、本発 明の第 1記録エリアの一具体例であるゥォブル (Wobble)無し区間の記録領域、及び 、本発明の第 2記録エリアの一具体例であるゥォブル (Wobble)有り区間の記録領域 との配置関係を概念的に示す模式図である。  First, with reference to FIG. 6, one detailed configuration centering on a specific example of the “first recording area” and a specific example of the “second recording area” according to the present invention will be described. Here, FIG. 6 shows a recording area of a wobbleless section which is a specific example of the first recording area of the present invention, and a wobble which is a specific example of the second recording area of the present invention. FIG. 6 is a schematic diagram conceptually showing an arrangement relationship with a recording area of a section.
[0109] 図 6に示されるように、本発明の情報記録媒体は、（i)リードインエリア 101内に、例 えばコントロールデータゾーン CDZ等の 1番目のゥォブル無し区間（即ち、本発明の 第 1記録エリアの一具体例）、及び (ii)データエリアの内周領域に、 2番目のゥォブル 無し区間を備えて構成されている。他方、それ以外の記録領域は、ゥォブル有り区間 (即ち、本発明の第 2記録エリアの一具体例）として、構成されている。特に、ゥォブル 有り区間 W1の、例えば外周側において、ファイルシステム FS laが配置可能とされて いる。このファイルシステム FS laが配置可能な記録領域の開始点は、例えば物理的 なセクタ一番号が「30000h」である位置情報、或いは、例えば LSN (Logical Sector N umber)が「0」である位置情報によって、特定可能であるようにしてもよい。尚、 wobble 無し区間の開始点の半径位置は、例えば「24 (mm)」としてもよい。この場合ファイル システム FS laの開始点は少なくとも 24mm未満と 、うことになる。 [0110] 他方、ゥォブル有り区間 W2の記録領域において、ファイルシステム FS lb力 例え ばユーザによって時間的に後から、記録可能である。特に、ファイルシステム FSlb は、拡張性の高い情報、即ち、例えば、ディレクトリ構造やファイル構造やアンカーポ イント等の、記録情報を記録又は再生する際の論理階層に関する情報であるようにし てもよい。 [0109] As shown in FIG. 6, the information recording medium of the present invention is (i) in the lead-in area 101, for example, the first no-wobble section such as the control data zone CDZ (that is, the first recording medium of the present invention). One specific example of one recording area), and (ii) The inner area of the data area is provided with a second wobbleless section. On the other hand, the other recording area is configured as a wobbled section (that is, a specific example of the second recording area of the present invention). In particular, the file system FS la can be arranged in the wobbled section W1, for example, on the outer peripheral side. The starting point of the recording area where this file system FS la can be placed is, for example, position information where the physical sector number is “30000h”, or position information where the LSN (Logical Sector Number) is “0”, for example. May be specified. The radius position of the start point of the wobble-free section may be, for example, “24 (mm)”. In this case, the starting point of the file system FS la is at least less than 24 mm. [0110] On the other hand, in the recording area of wobbled section W2, file system FS lb power, for example, can be recorded later in time by the user. In particular, the file system FSlb may be information with high expandability, that is, information relating to a logical hierarchy when recording information is recorded or reproduced, such as a directory structure, a file structure, or an anchor point.
[0111] (1 4 2)第 1回転速度制御方式、及び第 2回転速度制御方式の具体例  [0111] (1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method
次に、図 7から図 11を参照して、本発明の情報記録媒体の実施例に係る光ディスク における、第 1回転速度制御方式の一具体例である CAV制御方式、及び第 2回転 速度制御方式の一具体例である CLV制御方式についてより詳細に説明する。ここに 、図 7は、一般の光ディスクにおいて、 CAV制御方式が適用された場合の各種特性 を図式的に示した概念図である。図 8は、一般の光ディスクにおいて、 CLV制御方式 が適用された場合の各種特性を図式的に示した概念図である。図 9は、一般の光デ イスクにおいて、 CAV制御方式が適用された場合のゥォブルの波長と、 CLV制御方 式が適用された場合のゥォブルの波長とを図式的に比較した模式図（図 9 (a) )、及 び、一般の光ディスクにおけるゥォブルの波長と 1ECCブロックとの関係を図式的に 示した概念図である。図 10は、本発明の第 1方式エリア、及び第 2方式エリアと、アド レスとの関係を図式的に示した一のグラフ（図 10 (a) )、並びに、本発明の第 1方式ェ リア、及び第 2方式エリアと、情報記録媒体の回転数との関係を図式的に示した一の グラフ（図 10 (b) )である。図 11は、本発明の第 1方式エリア、及び第 2方式エリアと、 アドレスとの関係を図式的に示した他のグラフ（図 11 (a) )、並びに、本発明の第 1方 式エリア、及び第 2方式エリアと、情報記録媒体の回転数との関係を図式的に示した 他のグラフ（図 11 (b) )である。尚、図 10 (a)及び図 11 (a)は、アドレスが増加する場 合のグラフであるが、アドレスが減少する場合でも、グラフ上でのアドレスの変化率の 傾きを正負反対にすればょ 、。  Next, referring to FIG. 7 to FIG. 11, a CAV control method and a second rotation speed control method, which are specific examples of the first rotation speed control method, in the optical disc according to the embodiment of the information recording medium of the present invention. The CLV control method, which is one specific example, will be described in more detail. FIG. 7 is a conceptual diagram schematically showing various characteristics when a CAV control method is applied to a general optical disc. Fig. 8 is a conceptual diagram schematically showing various characteristics of a general optical disc when the CLV control method is applied. Fig. 9 is a schematic diagram schematically comparing the wobble wavelength when the CAV control method is applied to the wobble wavelength when the CLV control method is applied to a general optical disk (Fig. 9). (a)), and is a conceptual diagram schematically showing the relationship between wobble wavelength and 1ECC block in a general optical disc. FIG. 10 is a graph (FIG. 10 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and addresses, and the first method area of the present invention. FIG. 10B is a graph schematically showing the relationship between the rear and second system areas and the rotation speed of the information recording medium. FIG. 11 shows another graph (FIG. 11 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and addresses, and the first method area of the present invention. FIG. 11 is another graph (FIG. 11 (b)) schematically showing the relationship between the second method area and the rotation speed of the information recording medium. Figures 10 (a) and 11 (a) are graphs when the address increases, but even if the address decreases, the slope of the rate of change of the address on the graph can be reversed. Oh ,.
[0112] 前述したように、本実施例に係る光ディスク 100のゥォブル無し区間の記録領域 (即 ち、本発明の第 1記録エリアの一具体例）においては、 CAV制御方式等の角速度を 一定とする回転速度制御方式が適用されているので、記録用の回転速度制御信号 を得るためのゥォブル 109が形成されていなくても、プリ記録を行うプリ記録装置によ つてのみ、暗号化情報を、正確な位置に予めプリ記録することが可能である。具体的 には、暗号化情報を構成する所望の長さの記録マークを、正確な位置に予めプリ記 録することが可能である。 [0112] As described above, in the recording area of the optical disk 100 according to the present embodiment in the non-wobbled section (that is, a specific example of the first recording area of the present invention), the angular velocity of the CAV control method or the like is constant. Therefore, even if the wobble 109 for obtaining the rotational speed control signal for recording is not formed, the pre-recording device that performs pre-recording is used. Only then, the encrypted information can be pre-recorded in the correct position. Specifically, it is possible to pre-record a recording mark having a desired length constituting the encryption information at an accurate position.
[0113] より詳細には、図 7に示されるように、 CAV制御方式は、光ディスクに情報を記録す る際に、角速度を一定、即ち、単位時間当たりの回転数を一定とする回転速度制御 方式である。よって、 CAV制御方式は、光ディスクの内外周における記録に際して線 速度が変化する。このため、スピンドルモータの回転速度の制御を簡素化することが 可能となる。尚、詳細には、例えば、コントロールデータゾーン CDZの半径方向にお ける大きさは、光ディスクの内周において、約 200トラック程度と非常に小さい。従つ て、 CAV制御方式が適用されたコントロールデータゾーン CDZに暗号ィ匕情報を記 録するに際して、線速度の変化に応じて、記録ストラテジー等の記録パラメータを変 更する必要は殆ど又は完全にな 、。  More specifically, as shown in FIG. 7, the CAV control method is a rotational speed control in which the angular speed is constant, that is, the rotational speed per unit time is constant when information is recorded on the optical disc. It is a method. Therefore, in the CAV control method, the linear velocity changes during recording on the inner and outer circumferences of the optical disc. For this reason, it is possible to simplify the control of the rotation speed of the spindle motor. In detail, for example, the size of the control data zone CDZ in the radial direction is very small, about 200 tracks, on the inner periphery of the optical disk. Therefore, when recording the encryption key information in the control data zone CDZ to which the CAV control method is applied, it is almost or completely necessary to change the recording parameters such as the recording strategy according to the change of the linear velocity. Nah ...
[0114] 他方、図 8に示されるように、本実施例に係る光ディスク 100のゥォブル有り区間の 記録領域 (即ち、本発明の第 2記録エリアの一具体例）においては、 CLV制御方式 が適用されている。この CLV制御方式においては、光ディスク 100の内周側で単位 時間当たりの回転数を高くし、外周側では単位時間当たりの回転数を低くすることが できる。従って、ゥォブル有り区間の記録領域に情報を記録する際に、ゥォブルから 得られる記録用の回転速度制御信号に基づ 、て、光ディスクの半径位置に対応して スピンドルモータの回転速度を制御することによって、線速度を一定とすることが可能 となる。  On the other hand, as shown in FIG. 8, the CLV control method is applied to the recording area of the wobbled section of the optical disc 100 according to the present embodiment (that is, one specific example of the second recording area of the present invention). Has been. In this CLV control method, the number of revolutions per unit time can be increased on the inner circumference side of the optical disc 100, and the number of revolutions per unit time can be lowered on the outer circumference side. Therefore, when recording information in the recording area of the wobbled section, the rotational speed of the spindle motor is controlled corresponding to the radial position of the optical disk based on the recording rotational speed control signal obtained from the wobble. Thus, the linear velocity can be kept constant.
[0115] 詳細には、図 9 (a)に示されるように、 CAV制御方式が適用されたゥォブル無し区 間の記録領域における、アドレスを規定可能な物理的記録単位に相当するゥォブル の波長 L1と、 CLV制御方式が適用されたゥォブル有り区間の記録領域におけるゥォ ブルの波長 L2とを異ならせることが可能である。他方、図 9 (b)に示されるように、 1シ ンクフレーム「lsyn」は、 8個のゥォブルによって構成されている。 1セクタ「lsector」 は、 26個のシンクフレームによって構成されている。 1ECCブロックは、 16個のセクタ によって構成されている。尚、 1ECCブロックは、 32 (KB : Kilo bytes)である。  [0115] Specifically, as shown in Fig. 9 (a), the wobble wavelength L1 corresponding to the physical recording unit capable of defining the address in the recording area in the wobbleless area to which the CAV control method is applied. And the wobble wavelength L2 in the recording area of the wobbled section to which the CLV control method is applied can be made different. On the other hand, as shown in FIG. 9B, one sync frame “lsyn” is composed of eight wobbles. One sector “lsector” is composed of 26 sync frames. One ECC block is composed of 16 sectors. One ECC block is 32 (KB: Kilo bytes).
[0116] 以上のように構成されているので、例えばセクタや ECCブロックで表現されるァドレ スは、ゥォブルの波長に基づいて、規定される。具体的には、一定の記録トラックの長 さに相当するアドレスは、波長が「L1」である、 CAV制御方式が適用されたアドレスを 規定可能な物理的記録単位に相当するゥォブルに基づいて規定される場合と、波長 が「L2」である、 CLV制御方式が適用されたゥォブルに基づ 、て規定される場合とで は異なる。 [0116] Since it is configured as described above, for example, an address represented by a sector or ECC block is used. Is defined based on the wobble wavelength. Specifically, an address corresponding to a certain length of a recording track is specified based on a wobble corresponding to a physical recording unit that can specify an address to which a CAV control method is applied and whose wavelength is “L1”. The case where the wavelength is “L2” and the case where it is specified based on the wobble to which the CLV control method is applied is different.
[0117] 特に、本実施例においては、図 10 (a)及び図 10 (b)に示されるように、第 1方式ェ リア A1 (半径位置が「&点」 点」の間）においては、 CAV制御方式により記録処 理が行われる。他方、第 2方式エリア A2 (半径位置が 点」より外周側、又は半径位 置が「a点」より内周側）においては、一般的な CLV制御方式によりプリフォーマットさ れたプリアドレスに基づいて、記録処理が行われる。従って、 CAV制御方式により記 録された第 1方式エリア A1 (半径位置が「&点」 点」の間）と、 CLV制御方式によ り記録された第 2方式エリア A2 (半径位置が 点」より外周側、又は半径位置が「a点 」より内周側）との境界点において、第 1方式エリア A1の境界アドレス (セクタアドレス） を、第 2方式エリア A2の境界アドレス (プリアドレス）と異ならせる、又は、概ね一致さ せることが可能である。具体的には、半径位置が「a点」における境界点においては、 第 2方式エリア A2のアドレスと、第 1方式エリア A1のアドレスとは概ね一致して!/、る、 と共に、回転数も概ね一致している。他方、第 1方式エリア A1の外周端「b点」におけ る境界アドレスは、「Ab」の値をとり、第 2方式エリア A2の内周端「c点」における境界 アドレスは、「Ac」の値をとり、不連続である。と共に、第 1方式エリア A1の外周端「b 点」における回転数と、第 2方式エリア A2の内周端 点」における回転数とは一致し ていなぐ不連続である。  [0117] In particular, in the present embodiment, as shown in Fig. 10 (a) and Fig. 10 (b), in the first method area A1 (the radial position is between the "& point" point), The recording process is performed by the CAV control method. On the other hand, in the second method area A2 (radius position is on the outer periphery side from the point, or the radius position is on the inner periphery side from the point a), it is based on the pre-address preformatted by the general CLV control method. Thus, the recording process is performed. Therefore, the first method area A1 recorded between the CAV control method (between the “& point” radius position) and the second method area A2 recorded with the CLV control method (the radius position is point). The boundary address (sector address) of the first method area A1 is the same as the boundary address (pre-address) of the second method area A2 at the boundary point with the outer periphery side or the radial position on the inner periphery side from the “a point”. They can be different or roughly matched. Specifically, at the boundary point where the radial position is “a point”, the address of the second method area A2 and the address of the first method area A1 are almost the same! /, And the rotation speed is also It is almost the same. On the other hand, the boundary address at the outer peripheral edge “b” of the first method area A1 takes the value “Ab”, and the boundary address at the inner peripheral edge “c” of the second method area A2 is “Ac”. Is discontinuous. At the same time, the number of revolutions at the outer peripheral end “b” of the first method area A1 and the number of revolutions at the inner peripheral end of the second method area A2 do not match and are discontinuous.
[0118] 或いは、特に、本実施例においては、図 11 (a)及び図 11 (b)に示されるように、第 1方式エリア A1 (半径位置が「a点」一「b点」の間）においては、 CAV制御方式により 記録処理が行われる。力！]えて、この第 1方式エリア A1の終了端から、第 2方式エリア 八2 (半径位置が「じ点」ょり外周側）においては、 CLV制御方式によりプリフォーマット されたプリアドレスに基づいて、記録処理が行われる。従って、 CAV制御方式により 記録された第 1方式エリア A1 (半径位置が「&点」 点」の間）と、 CLV制御方式に より記録された第 2方式エリア A2 (半径位置が 点」より外周側、又は半径位置が「a 点」より内周側）との境界点において、第 1方式エリア Alの境界アドレス (セクタァドレ ス）を、第 2方式エリア A2の境界アドレス (プリアドレス）と概ね一致させることが可能で ある。尚、図 11 (a)中の点線は、第 1方式エリア A1 (半径位置が「a点」一「b点」の間） が存在しない場合における、 CLV制御方式によりプリフォーマットされたプリアドレス を示す。具体的には、半径位置が「&点」における境界点においては、第 2方式エリア A2のアドレスと、第 1方式エリア A1のアドレスとは概ね一致している、と共に、回転数 も概ね一致している。他方、第 1方式エリア A1の外周端「b点」における境界アドレス は、「Ab」の値をとり、第 2方式エリア A2の内周端「c点」における境界アドレスは、「A c (=Ab)」の値をとり、連続している。と共に、第 1方式エリア A1の外周端「b点」にお ける回転数と、第 2方式エリア A2の内周端「c点」における回転数とは一致しており、 連続している。 [0118] Alternatively, in particular, in this embodiment, as shown in Fig. 11 (a) and Fig. 11 (b), the first method area A1 (the radius position is between "a point" and "b point"). ) Is recorded by the CAV control method. Power! From the end of this first method area A1, in the second method area 8 2 (radius position is “outside”), based on the pre-address preformatted by the CLV control method, A recording process is performed. Therefore, the first method area A1 recorded between the CAV control method (between the “& point” radius position) and the second method area A2 recorded using the CLV control method (the radius position is “point”) Side or radial position is `` a It is possible to make the boundary address (sector address) of the first method area Al substantially coincide with the boundary address (pre-address) of the second method area A2 at the boundary point with the inner periphery side of the “point”. Note that the dotted line in Fig. 11 (a) indicates the pre-address preformatted by the CLV control method when the first method area A1 (the radius position is between "a point" and "b point") does not exist. Show. Specifically, at the boundary point where the radial position is “&”, the address of the second method area A2 and the address of the first method area A1 are almost the same, and the rotation speed is also the same. ing. On the other hand, the boundary address at the outer edge “b” of the first method area A1 takes the value “Ab”, and the boundary address at the inner edge “c” of the second method area A2 is “A c (= Ab) ”is taken and is continuous. At the same time, the number of revolutions at the outer peripheral end “b” of the first method area A1 and the number of revolutions at the inner peripheral “c point” of the second method area A2 match and are continuous.
[0119] 以上の結果、この境界点におけるアドレスの不連続性又は連続性に基づいて、例 えば電子配信先でありコピーの行われる対象となる情報記録媒体は、正当な記録型 の情報記録媒体であるか、又は違法なコピーが行われた情報記録媒体である力否 かを、より簡便且つ的確に識別することが可能である。  As a result of the above, based on the discontinuity or continuity of the address at this boundary point, for example, the information recording medium that is the electronic distribution destination and to be copied is a legitimate recording type information recording medium. It is possible to more easily and accurately identify whether or not the information recording medium has been illegally copied.
[0120] 更に、力！]えて、本発明の情報記録媒体に係る実施例では、例えば、次のような 3種 類の効果を享受することも可能である。第 1番目の効果として、一般の情報記録再生 装置は、例えばディスクキー、即ち、暗号化鍵情報等の所定のデータがプリ記録され て!、るゥォブル無し区間の記録領域にぉ 、ては、クロック情報としてゥォブル信号を 検出することができない。従って、一般の情報記録再生装置は、例えば DVD— RO M等の再生専用の情報記録媒体と区別することなく、当該再生専用の情報記録媒 体と概ね同様に、本発明の情報記録媒体に対して、再生専用の情報記録媒体に対 応したアプリケーション等の前述した特別プログラムを実行することが可能である。尚 、この特別プログラムは、ゥォブル無し区間の記録領域においてプリ記録されてもよ V、し、ゥォブル無し区間の記録領域以外の記録領域にぉ 、て記録されるようにしても よい。  [0120] Furthermore, power! In the embodiment of the information recording medium of the present invention, for example, the following three types of effects can also be enjoyed. As a first effect, a general information recording / reproducing apparatus is pre-recorded with predetermined data such as a disc key, that is, encryption key information, for example! A wobble signal cannot be detected as clock information. Therefore, a general information recording / reproducing apparatus does not distinguish from a reproduction-only information recording medium such as a DVD-ROM, for example, and generally corresponds to the information-recording medium of the present invention. Thus, it is possible to execute the aforementioned special program such as an application corresponding to a reproduction-only information recording medium. Note that this special program may be pre-recorded in the recording area of the section without wobble, or may be recorded in a recording area other than the recording area of the section without wobble.
[0121] 他方で、一般の情報記録再生装置は、ゥォブル無し区間の記録領域において、ク ロック情報としてゥォブル信号を検出することができな 、ので、ゥォブル無し区間の記 録領域にプリ記録されている暗号ィ匕情報等の所定のデータを書き換えることは不可 能である。従って、例えば、当該情報記録媒体の著作権保護を実現することが可能 である。尚、ゥォブル有り区間の記録領域においては、前述したクロック情報としてゥ ォブル信号を検出することが可能であるので、一般の記録処理を行うことが可能であ る。 [0121] On the other hand, a general information recording / reproducing apparatus cannot detect a wobble signal as clock information in a recording area of a wobbleless section. It is impossible to rewrite predetermined data such as encryption key information pre-recorded in the recording area. Therefore, for example, copyright protection of the information recording medium can be realized. In the recording area of the wobbled section, the wobble signal can be detected as the clock information described above, so that general recording processing can be performed.
[0122] 第 2番目の効果として、例えば、記録情報を再生する際に、最初にアクセスされ、記 録情報の再生が許可される力否かが判定されるための判定領域 (所謂、再生設定領 域)が、ゥォブル無し区間の記録領域に含まれる場合、次のような効果を享受すること が可能である。即ち、ゥォブル無し区間の記録領域にゥォブルはプリフォーマットされ ていないので、従来の再生機 (一般の情報記録再生装置）は、当該ゥォブルを検出 できないので、一般の情報記録再生装置は、少なくとも判定領域における再生処理 において、本発明の情報記録媒体と、一般的な、例えば DVD— ROM等の再生専 用の情報記録媒体とを区別することができない。この結果、従来の再生機は、一般的 な再生専用の情報記録媒体と同様に、本発明の情報記録媒体に対して、再生処理 を行うことが可能である。  [0122] As a second effect, for example, when playing back recorded information, a determination area (so-called playback setting) for determining whether or not the power to allow playback of recorded information is first accessed. If the area is included in the recording area of the wobble-free section, it is possible to enjoy the following effects. That is, since the wobble is not preformatted in the recording area of the no-wobble section, the conventional player (general information recording / reproducing apparatus) cannot detect the wobble. Therefore, the general information recording / reproducing apparatus has at least the determination area. In the reproduction processing in the above, it is impossible to distinguish between the information recording medium of the present invention and a general information recording medium dedicated to reproduction such as a DVD-ROM. As a result, the conventional reproducing apparatus can perform the reproducing process on the information recording medium of the present invention in the same manner as a general reproduction-only information recording medium.
[0123] 以上の結果、例えば CSS等の暗号ィ匕システムによって、著作権が保護されたコン テンッを、記録型の情報記録媒体によって、一般のユーザに供給し、供給されたコン テンッを、従来の再生機によって再生処理を行わせることが可能となる。従って、本 発明の情報記録媒体によれば、コンテンツの著作権の保護と、再生互換性の維持と の両立を実現することが可能となる。特に、例えば DVD等の情報記録媒体を用いた 、出版数が限定された少量出版、又は、著作権が適切に保護された ROMコンテンツ [0123] As a result of the above, for example, content protected by copyright using a cryptographic system such as CSS is supplied to a general user using a recording-type information recording medium. It becomes possible to perform the reproduction process by the reproduction apparatus. Therefore, according to the information recording medium of the present invention, it is possible to realize both the protection of the copyright of the content and the maintenance of reproduction compatibility. In particular, for example, a small amount of publication with a limited number of publications using an information recording medium such as a DVD, or ROM content with copyrights appropriately protected
(通常、再生専用媒体によって店頭で販売されるコンテンツ)のネットワークを介した ダウンロードによる販売を実現することが可能となる。 It is possible to achieve sales by downloading via a network (content that is usually sold in stores on playback-only media).
[0124] 第 3番目の効果として、所定のデータがプリ記録されて 、るゥォブル無し区間の記 録領域の記録領域が、更に、例えばユーザによって記録情報を記録可能なユーザ データエリアに含まれる場合、次のような効果を享受することが可能である。即ち、従 来の再生機 (一般の情報記録再生装置）は、例えば DVDコンテンツのタイトル情報 が記録されて 、るゥォブル無し区間の記録領域にぉ 、ては、クロック情報としてゥォ ブル信号を検出することができない。従って、一般の情報記録再生装置は、例えば D VD ROM等の再生専用の情報記録媒体と区別することなく、当該再生専用の情 報記録媒体と概ね同様に、本発明の情報記録媒体に対して、前述した、再生再開処 理（レジューム処理： Resume Operation)を行うことが可能である。 [0124] As a third effect, when predetermined data is pre-recorded and the recording area of the recording area of the non-wobbled section is further included in a user data area in which recording information can be recorded by a user, for example It is possible to enjoy the following effects. In other words, a conventional player (general information recording / reproducing device) records, for example, title information of DVD content and is recorded as clock information in a recording area of a section without a wobble. Bull signal cannot be detected. Therefore, a general information recording / reproducing apparatus does not distinguish from a reproduction-only information recording medium such as a DVD ROM, for example, and generally corresponds to the information-recording medium of the present invention. It is possible to perform the above-mentioned reproduction restart processing (resume operation).
[0125] 具体的には、この情報再生装置は、先ず (一)再生途中で当該情報記録媒体が取 り出された瞬間に再生していた、記録情報の再生位置を示すアドレス、（二）当該情 報記録媒体にお!、て再生されて!、た記録情報のタイトル情報、又は (三)ユーザーデ 一タエリアの先頭部分に存在する所定の位置を示すデータ列等の、再生途中の記 録情報を特定可能な特定情報を、例えば内部メモリ等の記憶手段にお!、て記憶する 。次に、情報再生装置は、再度、情報記録媒体が挿入された場合に、例えばタイトル 情報等の特定情報が記録されて 、る領域にぉ 、て、 (i)クロック情報としてゥォブル 信号が検出されるか否か、又は、（ii)特定情報を再生可能である力否か、などを判定 する。次に、情報再生装置は、（i)特定情報が記録されている領域においてクロック 情報としてゥォブル信号が検出されな 、場合、又は (ii)例えばタイトル情報等の特定 情報を再生可能である場合、記憶されて ヽる記録情報の再生位置を示すアドレスの 近傍から、再生を再開することが可能である。 [0125] Specifically, the information reproducing apparatus first (1) an address indicating the reproduction position of the recorded information that was reproduced at the moment when the information recording medium was removed during reproduction, (2) Recorded in the middle of playback such as title information of recorded information, or (3) a data string indicating a predetermined position existing at the beginning of the user data area. Specific information that can specify recording information is stored in a storage means such as an internal memory. Next, when the information recording medium is inserted again, the information reproducing apparatus records, for example, specific information such as title information, and (i) a wobble signal is detected as clock information. Whether or not (ii) the ability to reproduce the specific information. Next, the information reproducing apparatus (i) when a wobble signal is not detected as clock information in an area where the specific information is recorded, or (ii) when specific information such as title information can be reproduced, Playback can be resumed from the vicinity of the address indicating the playback position of the recorded information that is stored.
[0126] (2)プリ記録を行う情報記録再生装置  (2) Information recording / reproducing apparatus for performing pre-recording
次に、図 12から図 14を参照して、本発明の情報記録装置に係る、例えば暗号化情 報を予めプリ記録すると共に、コンテンツ等の記録情報を記録再生する情報記録再 生装置について説明する。この情報記録再生装置 200aは、プリ記録装置を含むよう にしてもよい。  Next, with reference to FIG. 12 to FIG. 14, an information recording / reproducing apparatus according to the information recording apparatus of the present invention for pre-recording, for example, encrypted information and recording / reproducing recorded information such as contents will be described. To do. The information recording / reproducing apparatus 200a may include a pre-recording apparatus.
[0127] (2— 1)基本構成  [0127] (2— 1) Basic configuration
先ず、図 12を参照して、本発明の情報記録装置に係る情報記録再生装置の基本 構成について説明する。ここに、図 12は、本発明の情報記録装置に係る情報記録再 生装置の全体構成を示すブロック図である。光ディスク 100には、第 1クロック信号 C K1に同期したピットデータ DPが記録マークの長短によって記録されている。この例 の記録マークはピットであり、トラックはピット列によって構成される。トラックは、例えば ゥォブル信号 WBに応じて蛇行した形状になって ヽる。ゥォブル信号 WBは第 1クロッ ク信号 CK1に同期している。 First, the basic configuration of the information recording / reproducing apparatus according to the information recording apparatus of the present invention will be described with reference to FIG. FIG. 12 is a block diagram showing the overall configuration of the information recording / reproducing apparatus according to the information recording apparatus of the present invention. On the optical disc 100, pit data DP synchronized with the first clock signal C K1 is recorded according to the length of the recording mark. In this example, the recording mark is a pit, and the track is composed of a pit row. For example, the track has a meandering shape according to the wobble signal WB. The wobble signal WB is the first clock Is synchronized with the CK1 signal.
[0128] 情報記録再生装置 200aは、光ディスク 100に対して再生ビームを照射するとともに 反射光に応じた信号を出力する光ピックアップ 202と、光ディスク 100の回転を制御 するスピンドルモータ 203と、サーボユニット 222を備える。サーボユニット 222には、 第 1クロック信号 CK1及びピット同期信号 SYNCpが供給される。サーボユニット 222 は、これらの信号に同期して、スピンドルモータ 203の回転を制御するスピンドルサー ボ、光ピックアップ 202の光ディスク 100に対する相対的位置制御であるフォーカス サーボ及びトラッキングサーボを実行する。  [0128] The information recording / reproducing apparatus 200a includes an optical pickup 202 that irradiates the optical disc 100 with a reproduction beam and outputs a signal corresponding to the reflected light, a spindle motor 203 that controls the rotation of the optical disc 100, and a servo unit 222. Is provided. The servo unit 222 is supplied with the first clock signal CK1 and the pit synchronization signal SYNCp. In synchronization with these signals, the servo unit 222 executes a spindle servo that controls the rotation of the spindle motor 203 and a focus servo and a tracking servo that are relative position controls of the optical pickup 202 with respect to the optical disc 100.
[0129] 光ピックアップ 202は、再生ビームを照射するレーザーダイオード、 4分割検出回路 を備える（図示略)。 4分割検出回路は、再生ビームの反射光を図 12に示す領域 1A 、 1B、 1C、 IDに 4分割し、各領域の光量に応じた信号を各々出力する。ヘッドアン プ 204は、光ピックアップ 202の各出力信号を各々増幅し、領域 1Aに対応する分割 読取信号 la、領域 IBに対応する分割読取信号 lb、領域 1Cに対応する分割読取信 号 lc、及び領域 IDに対応する分割読取信号 Idを出力する。なお、光ピックアップ 2 02及びヘッドアンプ 204は本願発明に係る光ピックアップ手段に相当する。  [0129] The optical pickup 202 includes a laser diode that irradiates a reproduction beam, and a quadrant detection circuit (not shown). The quadrant detection circuit divides the reflected light of the reproduction beam into four regions 1A, 1B, 1C, and ID shown in FIG. 12, and outputs a signal corresponding to the light amount of each region. The head amplifier 204 amplifies each output signal of the optical pickup 202, and the divided read signal la corresponding to the area 1A, the divided read signal lb corresponding to the area IB, the divided read signal lc corresponding to the area 1C, and the area The divided read signal Id corresponding to the ID is output. The optical pickup 202 and the head amplifier 204 correspond to the optical pickup means according to the present invention.
[0130] 総和生成回路 210は、分割読取信号 la、 lb、 lc、及び Idを加算して、総和読取 信号 SRFを出力する加算回路力 なる。なお、総和読取信号 SRFは、記録マークの 長短を表す信号である。  [0130] The sum generation circuit 210 adds the divided read signals la, lb, lc, and Id, and serves as an adder circuit that outputs the sum read signal SRF. The total read signal SRF is a signal indicating the length of the recording mark.
[0131] ピットデータ復調回路 211は、総和読取信号 SRFに基づいてピットデータ DPを再 生すると共に第 1クロック信号 CK1を生成する。より具体的には、ピットデータ DPは、 所定のテーブルを用いて復調されて再生データが生成される。例えば、変調方式と して EFM変調が採用される場合には、 14ビットのピットデータ DPを 8ビットの再生デ ータに変換する処理が施される。更に、この再生データの順序を予め定められた規 則に従って並べ換えるデスクランブル処理が実行され、処理済の再生データが出力 される。  [0131] The pit data demodulation circuit 211 reproduces the pit data DP based on the total read signal SRF and also generates the first clock signal CK1. More specifically, the pit data DP is demodulated using a predetermined table to generate reproduction data. For example, when EFM modulation is adopted as a modulation method, a process of converting 14-bit pit data DP into 8-bit reproduction data is performed. Further, a descrambling process for rearranging the order of the reproduction data in accordance with a predetermined rule is executed, and processed reproduction data is output.
[0132] このようにして得られた再生データは、図 12に示すピットデータ訂正回路 212へ供 給され、そこで、エラー訂正処理や補間処理等が施された後、ノ ッファ 213に記憶さ れる。インターフェース 214はバッファ 213に記憶されたデータを順次読み出して所 定の出力形式に変換して外部機器へ出力する。更に、このインターフェース 214を介 して、各種データが、例えば、外部ネットワーク 400に接続された後述される回線接 続装置との間で入出力される。 [0132] The reproduction data obtained in this way is supplied to the pit data correction circuit 212 shown in FIG. 12, where it is subjected to error correction processing, interpolation processing, etc., and then stored in the nother 213. . The interface 214 sequentially reads out the data stored in the buffer 213. Convert to a fixed output format and output to an external device. Furthermore, various data are input / output via the interface 214 to / from a line connection device (described later) connected to the external network 400, for example.
[0133] プッシュプル信号生成回路 220は、 (la+ Id) (lb + lc)を算出して、プッシュプ ル信号を生成する。成分（la+ ld)は、読取方向に対して左側の領域 1A及び 1Dに 対応する一方、成分（lb + lc)は、読取方向に対して右側の領域 1B及び 1Cに対応 する。即ち、再生ビームがピットに対して左側に偏っていれば、プッシュプル信号は 振幅中心を基準として正極性となり、再生ビームがピットの中央に位置する場合はプ ッシュプル信号の値は振幅中心となり、再生ビームがピットに対して右側に偏って ヽ れば、プッシュプル信号は振幅中心を基準として負極性となる。再生ビームとピットの 相対的な位置は、トラックの蛇行に応じて変化し、プッシュプル信号の値は再生ビー ムとピットの相対的な位置関係を表している。即ち、プッシュプル信号は、トラックの蛇 行に応じた信号である。  [0133] The push-pull signal generation circuit 220 calculates (la + Id) (lb + lc) and generates a push-pull signal. The component (la + ld) corresponds to the regions 1A and 1D on the left side with respect to the reading direction, while the component (lb + lc) corresponds to the regions 1B and 1C on the right side with respect to the reading direction. That is, if the playback beam is biased to the left with respect to the pit, the push-pull signal is positive with respect to the center of amplitude, and if the playback beam is located at the center of the pit, the value of the push-pull signal is centered on the amplitude. If the reproduction beam is biased to the right with respect to the pit, the push-pull signal becomes negative with respect to the amplitude center. The relative position of the playback beam and the pit changes according to the meandering of the track, and the value of the push-pull signal indicates the relative position of the playback beam and the pit. That is, the push-pull signal is a signal corresponding to the meandering of the track.
[0134] プッシュプル信号はローパスフィルタ 221を介してサーボユニット 222へ出力される 。サーボユニット 222は、プッシュプル信号に基づいてトラッキング制御を実行する。 また、プッシュプル信号はバンドパスフィルタ 223に供給される。バンドパスフィルタ 2 23の通過帯域は、記録時にぉ 、てゥォブルデータ DWをスペクトラム拡散変調して 得たゥォブル信号 WBをプッシュプル信号カゝら抽出できるように設定されて!、る。従つ て、バンドパスフィルタ 223はプッシュプル信号生成回路 220と共に上述した検出手 段を構成し、その出力信号は、光ディスク 100からゥォブル信号 WBを再生したものと なる。特に、コンパレータ 224においては、第 2記録情報記録領域へ違法な書き込み をしょうとした場合、本願発明に係る特殊領域にぉ ヽて記録クロック及び記録アドレス が検出することはできないために、記録動作においてエラーが発生し、記録動作が 中止されるので、プリ記録装置を含む情報記録再生装置の仕様や記録制御手順に かかわらず、第 2記録情報記録領域への違法な書き込みを防止することが可能とな る。即ち、 PLL (Phase Locked Loop)を制御不能にすることが可能となる。  The push-pull signal is output to the servo unit 222 via the low-pass filter 221. The servo unit 222 performs tracking control based on the push-pull signal. The push-pull signal is supplied to the band pass filter 223. The pass band of the band-pass filter 223 is set so that the wobble signal WB obtained by spread spectrum modulation of the wobble data DW can be extracted from the push-pull signal during recording. Therefore, the band-pass filter 223 constitutes the above-described detection means together with the push-pull signal generation circuit 220, and the output signal thereof is a reproduction of the wobble signal WB from the optical disc 100. In particular, the comparator 224 cannot detect the recording clock and the recording address in the special area according to the present invention when attempting to write illegally to the second recording information recording area. Since an error occurs and the recording operation is stopped, it is possible to prevent illegal writing to the second recording information recording area regardless of the specifications of the information recording / reproducing apparatus including the pre-recording apparatus and the recording control procedure. Become. That is, the PLL (Phase Locked Loop) can be made uncontrollable.
[0135] LPP検出回路 230は、コンパレータ 224からの出力信号 A、及び、ピットデータ復 調回路 211によって生成された第 1クロック信号 CK1に基づいて、 LPP信号を検出 可能に構成されている。そして、この LPP信号 Bを LPP復調回路 230、及び、サーボ ユニット 222へ出力可能に構成されている。 [0135] The LPP detection circuit 230 detects the LPP signal based on the output signal A from the comparator 224 and the first clock signal CK1 generated by the pit data demodulation circuit 211. It is configured to be possible. The LPP signal B can be output to the LPP demodulation circuit 230 and the servo unit 222.
[0136] LPP復調回路 230は、 LPP信号 Bを、プリフォーマットアドレス情報に復調可能に 構成されている。そして、このプリフォーマットアドレス情報をエラー訂正回路 229へ 出力可能に構成されている。  The LPP demodulation circuit 230 is configured to be able to demodulate the LPP signal B into preformat address information. The preformat address information can be output to the error correction circuit 229.
[0137] エラー訂正回路 229は、 LPP復調回路 230によって復調されたプリフォーマットアド レス情報に対してエラー訂正を行う。  The error correction circuit 229 performs error correction on the preformat address information demodulated by the LPP demodulation circuit 230.
[0138] CPU250は、情報記録再生装置 200aの各構成要素を統括制御する。  The CPU 250 performs overall control of each component of the information recording / reproducing device 200a.
[0139] (2— 2)動作原理  [0139] (2-2) Principle of operation
次に、図 13及び図 14を参照して、本発明の情報記録媒体に対して、暗号化情報 のプリ記録を行うプリ記録装置の動作原理について説明する。ここに、図 13は、本実 施例に係るプリ記録装置 200におけるプリ記録の動作原理を示したフローチャートで ある。図 14は、本発明の情報記録媒体において、プリ記録される記録領域の遷移を 、図式的に示した記録領域の模式図（図 14 (a)から図 14 (b) )である。  Next, with reference to FIG. 13 and FIG. 14, the operation principle of a pre-recording apparatus that pre-records encrypted information on the information recording medium of the present invention will be described. FIG. 13 is a flowchart showing the pre-recording operation principle in the pre-recording apparatus 200 according to the present embodiment. FIG. 14 is a schematic diagram of the recording area (FIGS. 14 (a) to 14 (b)) schematically showing the transition of the pre-recorded recording area in the information recording medium of the present invention.
[0140] 先ず、図 13において、光ディスク 100が装填されると、先ず、プリ記録装置 200の C PU (Central Processing Unit) 250の制御下で、光ピックアップ 202によりシーク動作 が行われる（ステップ S 101a)。  First, in FIG. 13, when the optical disc 100 is loaded, first, a seek operation is performed by the optical pickup 202 under the control of the CPU (Central Processing Unit) 250 of the pre-recording apparatus 200 (step S 101a ).
[0141] 次に、 CPU250の制御下で、光ディスク 100は、コンテンツが配信されるための光 ディスクであるか否かが判定される（ステップ S102a)。ここで、光ディスク 100は、コン テンッが配信されるための光ディスクである場合 (ステップ S102a: Yes)、光ディスク 100への記録動作に必要な各種管理情報が決定又は取得される (ステップ S 103a) 。より具体的には、 OPC処理が行われ、最適記録パワーが決定されると共に、記録ス トラテジーパターンが決定される。カロえて、エンボスピットの有無が検出される。更に、 CAV制御方式が適用されたコントロールデータゾーン CDZの開始位置を示した開 始アドレス情報力 ランドプリピット等のプリフォーマットアドレス情報力も取得される。  [0141] Next, under the control of the CPU 250, it is determined whether or not the optical disc 100 is an optical disc for content distribution (step S102a). Here, when the optical disc 100 is an optical disc for delivering content (step S102a: Yes), various management information necessary for the recording operation on the optical disc 100 is determined or acquired (step S103a). More specifically, the OPC process is performed to determine the optimum recording power and the recording strategy pattern. The presence or absence of an emboss pit is detected. In addition, the start address information power indicating the start position of the control data zone CDZ to which the CAV control method is applied is also acquired preformat address information power such as a land pre-pit.
[0142] 次に、光ディスク 100には、コンテンツが記録済みであるか否かが判定される（ステ ップ S 104a)。ここで、光ディスク 100には、コンテンツが記録済みではない場合 (ステ ップ S 104a : No)、例えば暗号ィ匕情報のプリ記録を行う所定アドレスをサーチすると 共に、プリ記録の準備を行う（ステップ S 105a)。 [0142] Next, it is determined whether or not content has been recorded on the optical disc 100 (step S104a). Here, when content is not recorded on the optical disc 100 (step S104a: No), for example, when searching for a predetermined address for pre-recording encryption key information, Both prepare for pre-recording (step S 105a).
[0143] 次に、 CPU250の制御下で、 CLV制御方式に基づいて、記録処理を行う位置の アドレスが検出される（ステップ S106a)。ここで、 CLV制御方式に基づいて、記録処 理を行う位置のアドレスが検出された場合 (ステップ S106a : Yes)、 CPU250の制御 下で、 CLV制御方式に基づいて、線速度が一定にされる (ステップ S107a)。他方、 CLV制御方式に基づ 、て、記録処理を行う位置のアドレスが検出されな 、場合 (ス テツプ S106a :No)、再度、ステップ S106aが行われる。  Next, under the control of the CPU 250, the address of the position where the recording process is performed is detected based on the CLV control method (step S106a). Here, if the address of the recording position is detected based on the CLV control method (step S106a: Yes), the linear velocity is made constant based on the CLV control method under the control of the CPU 250. (Step S107a). On the other hand, based on the CLV control method, if the address of the position where the recording process is to be performed is not detected (step S106a: No), step S106a is performed again.
[0144] 次に、 CPU250の制御下で、 CLV制御方式に基づいて、記録処理が行われる（ス テツプ S108a)。具体的には、図 14 (a)中のステップ S10に示されるように、 EBZ (Ext ended Border Zone)の記録処理が、 CLV制御方式に基づいて、通常のシームレスリ ンク手法によって、 EBZの先頭位置から 16バイト（Bytes)目力も開始される。次に、こ の EBZの記録処理は、 FS (File System)の 1ECCブロックだけ手前の位置に、 16バ イトに相当する長さを加算した位置までの記録処理を経て、終了される。  Next, a recording process is performed based on the CLV control method under the control of the CPU 250 (step S108a). Specifically, as shown in step S10 in FIG. 14 (a), the EBZ (Ext ended Border Zone) recording process is performed based on the CLV control method using the normal seamless link method. A 16-byte eye is also started from the position. Next, this EBZ recording process is completed after a recording process up to a position that is just before one ECC block of FS (File System) plus a length corresponding to 16 bytes.
[0145] 或いは、図 14 (c)中のステップ S30に示されるように、 CAV制御方式に基づいた記 録処理が行われる可能性があると共に、 CLV制御方式に基づ 、た記録処理が行わ れる可能性がある緩衝エリアの記録処理が行われるようにしてもよい。より具体的に は、この緩衝エリアの記録処理は、ゥォブル無し区間 W1の終了端に 16ECCに相当 する長さを加算した位置から開始される。次に、この緩衝エリアの記録処理は、例え ば 200ECCブロック程度の所定のデータ量の記録処理を経て、終了される。  [0145] Alternatively, as shown in step S30 in FIG. 14 (c), there is a possibility that a recording process based on the CAV control method may be performed, and a recording process based on the CLV control method is performed. It is also possible to perform a recording process of a buffer area that may be detected. More specifically, the buffer area recording process starts from a position obtained by adding a length corresponding to 16 ECC to the end of the wobbleless section W1. Next, the buffer area recording process is terminated after a predetermined data amount recording process of, for example, about 200 ECC blocks.
[0146] 再び、図 13に戻り、 CPU250の制御下で、 CAV制御方式に基づいて、記録処理 を行う位置のアドレスが検出される（ステップ S109a)。ここで、 CAV制御方式に基づ いて、記録処理を行う位置のアドレスが検出された場合 (ステップ S109a : Yes)、 CP U250の制御下で、スピンドルモータの印加電圧又は電流の出力値を固定して、 CA V制御方式に基づいて、角速度が一定にされる (ステップ S110a)。他方、 CAV制御 方式に基づ 、て、記録処理を行う位置のアドレスが検出されな 、場合 (ステップ S10 9a :No)、再度、ステップ S109aが行われる。  Returning again to FIG. 13, under the control of the CPU 250, the address of the position where the recording process is performed is detected based on the CAV control method (step S109a). Here, based on the CAV control method, when the address of the position to perform the recording process is detected (step S109a: Yes), the output value of the applied voltage or current of the spindle motor is fixed under the control of the CPU 250. Thus, the angular velocity is made constant based on the CAV control method (step S110a). On the other hand, based on the CAV control method, when the address of the position where the recording process is performed is not detected (step S109a: No), step S109a is performed again.
[0147] 次に、 CPU250の制御下で、 CAV制御方式に基づいて、記録処理が行われる（ス テツプ Sl l la)。具体的には、図 14 (b)中のステップ S 20に示されるように、 CDZの 記録処理が、 CDZの先頭位置（開始位置)から 16 (又は 32) ECCブロックだけ手前 力も開始される。次に、この CDZの記録処理は、 EBZの先頭位置（開始位置）に 3セ クタ（6000バイト)程度を加算した位置までの記録処理を経て、終了される。 Next, a recording process is performed based on the CAV control method under the control of the CPU 250 (step Sl la la). Specifically, as shown in step S20 in Fig. 14 (b), the CDZ The recording process starts from the beginning (starting position) of the CDZ by 16 (or 32) ECC blocks. Next, the CDZ recording process is completed after a recording process up to a position obtained by adding about 3 sectors (6000 bytes) to the start position (start position) of the EBZ.
[0148] 或いは、図 14 (d)中のステップ S40に示されるように、 CAV制御方式に基づいた、 所定のデータの記録処理が行われるようにしてもよい。より具体的には、この所定の データの記録処理は、 FSとして確保する記録領域の終了端から開始される。次に、 この所定のデータの記録処理は、前述した緩衝エリアの開始位置に所定の長さだけ 加算した位置までの記録処理を経て、終了される。  Alternatively, as shown in step S40 in FIG. 14D, predetermined data recording processing based on the CAV control method may be performed. More specifically, this predetermined data recording process starts from the end of the recording area secured as the FS. Next, the recording process of the predetermined data is completed after the recording process up to the position obtained by adding a predetermined length to the start position of the buffer area described above.
[0149] 再び、図 13に戻り、 CPU250の制御下で、全ての記録処理が終了したか否かが判 定される (ステップ S112a)。ここで、全ての記録処理が終了した場合 (ステップ S 112 a : Yes)、一連のプリ記録の動作は終了される。他方、全ての記録処理が終了しない 場合 (ステップ S 112a : No)、前述したように、 CLV制御方式に基づいて、記録処理 を行う位置のアドレスが検出される（ステップ S 106a)  Returning again to FIG. 13, it is determined whether or not all the recording processes have been completed under the control of the CPU 250 (step S112a). Here, when all the recording processes are completed (step S112a: Yes), a series of pre-recording operations is terminated. On the other hand, when all the recording processes are not completed (step S 112a: No), as described above, the address of the position where the recording process is performed is detected based on the CLV control method (step S 106a).
他方、ステップ S102aの判定の結果、コンテンツが配信されるための光ディスクで ないと判定された場合 (ステップ S 102a : No)、及び、ステップ S 104aの判定の結果 、光ディスク 100には、コンテンツが記録済みではあると判定された場合 (ステップ S1 04a: Yes)、光ディスク 100は、プリ記録装置 200から排出される。  On the other hand, as a result of the determination in step S102a, when it is determined that the content is not an optical disc for distribution (step S102a: No), and as a result of the determination in step S104a, the content is recorded on the optical disc 100. If it is determined that the recording has been completed (step S1 04a: Yes), the optical disc 100 is ejected from the pre-recording apparatus 200.
[0150] 尚、上述した、一連のプリ記録の動作の後で、例えばコンテンツ等の記録情報の記 録が行われてもよい。続いて、ファイルシステムの記録が行われてもよい。更に、続い て、フアイナライズ処理によって、リードインエリアやリードアウトエリア等が記録される ようにしてもよい。  [0150] After the series of pre-recording operations described above, recording information such as content may be recorded, for example. Subsequently, the file system may be recorded. Further, the lead-in area, lead-out area, etc. may be recorded subsequently by finalization processing.
[0151] (2— 3)プリ記録の手順の類型  [0151] (2-3) Types of pre-recording procedures
次に、図 15に加えて前述した図 10及び図 11を適宜参照して、本発明の情報記録 装置の実施例によるプリ記録の手順の類型について説明する。ここに、図 15は、本 発明の情報記録装置の実施例によるプリ記録の手順の類型を概念的に示すテープ ルである。尚、説明の便宜上、 2種類の情報記録媒体と、 2種類の記録手順との組み 合わせた、 4種類の類型について、夫々順番に説明していく。  Next, with reference to FIG. 10 and FIG. 11 described above in addition to FIG. 15, types of pre-recording procedures according to the embodiment of the information recording apparatus of the present invention will be described. FIG. 15 is a table conceptually showing a type of pre-recording procedure according to the embodiment of the information recording apparatus of the present invention. For convenience of explanation, four types of combinations of two types of information recording media and two types of recording procedures will be described in order.
[0152] 先ず、前述した図 10及び図 11に示されるように、 2種類の情報記録媒体について 説明する。 1種類目の情報記録媒体は、前述した図 10に示されるように、 CAV制御 方式により記録された第 1方式エリア A1と、 CLV制御方式により記録された第 2方式 エリア A2との境界点において、第 1方式エリア A1の境界アドレスを、第 2方式エリア A2の境界アドレスと異ならせる種類の情報記録媒体 (以下、適宜、「タイプ Aの情報 記録媒体」と称す)である。他方、 2種類目の情報記録媒体は、前述した図 11に示さ れるように、 CAV制御方式により記録された第 1方式エリア A1と、 CLV制御方式によ り記録された第 2方式エリア A2との境界点において、第 1方式エリア A1の境界アドレ スを、第 2方式エリア A2の境界アドレスと概ね一致させる種類の情報記録媒体 (以下 、適宜、「タイプ Bの情報記録媒体」と称す)である。 [0152] First, as shown in FIG. 10 and FIG. 11, the two types of information recording media explain. As shown in Fig. 10 above, the first type of information recording medium is at the boundary between the first method area A1 recorded by the CAV control method and the second method area A2 recorded by the CLV control method. This is an information recording medium of a type that makes the boundary address of the first system area A1 different from the boundary address of the second system area A2 (hereinafter referred to as “type A information recording medium” as appropriate). On the other hand, the second type of information recording medium includes the first method area A1 recorded by the CAV control method and the second method area A2 recorded by the CLV control method, as shown in FIG. At the boundary point, the type of information recording medium (hereinafter referred to as `` Type B information recording medium '' as appropriate) is used so that the boundary address of the first method area A1 is substantially the same as the boundary address of the second method area A2. is there.
[0153] 次に、 2種類の記録手順について説明する。 1種類目の記録手順は、第 1方式エリ ァにおけるプリ記録が行われるという記録手順 (以下、適宜、「ケース 1の記録手順」と 称す)である。 2種類目の記録手順は、第 1方式エリアに加えて、第 2方式エリアにお けるプリ記録が行われるという記録手順 (以下、適宜、「ケース 2の記録手順」と称す） である。 Next, two types of recording procedures will be described. The first type of recording procedure is a recording procedure in which pre-recording in the first method area is performed (hereinafter referred to as “case 1 recording procedure” as appropriate). The second type of recording procedure is a recording procedure in which pre-recording is performed in the second method area in addition to the first method area (hereinafter, referred to as “case 2 recording procedure” as appropriate).
[0154] 以上をまとめると、図 15に示されるように、本発明の情報記録装置の実施例による 記録手順としては、次の 4種類の類型が存在する。即ち、（i)情報記録媒体が「タイプ A」であり、記録手順が「ケース 1」である類型、（ii)情報記録媒体が「タイプ A」であり、 記録手順が「ケース 2」である類型、（iii)情報記録媒体が「タイプ B」であり、記録手順 が「ケース 1」である類型、及び (iv)情報記録媒体が「タイプ B」であり、記録手順が「 ケース 2」である類型である。以下、順番に 4種類の類型を夫々説明する。  To summarize the above, as shown in FIG. 15, there are the following four types of recording procedures according to the embodiment of the information recording apparatus of the present invention. That is, (i) the information recording medium is “type A” and the recording procedure is “case 1”, and (ii) the information recording medium is “type A”, and the recording procedure is “case 2”. (Iii) The type of information recording medium is “Type B” and the recording procedure is “Case 1”, and (iv) The information recording medium is “Type B” and the recording procedure is “Case 2”. It is a certain type. The following describes the four types in order.
[0155] (2- 3 - 1)「タイプ A」且つ「ケース 1」である類型  [0155] (2-3-1) “Type A” and “Case 1”
情報記録媒体力 ^タイプ A」であり、記録手順が「ケース 1」である類型は、ゥォブル 無し区間の記録領域において、所定のデータが予め記録された状態で、市販され、 エンドユーザに発売される類型である。これは電子配信などで使用することが可能で ある。具体的には、予め特別なプリ記録機によって、前述した図 10中において、第 1 方式エリア A1 (半径位置が「a点」一「b点」の間）に、所定の長さ「 a」の記録領域だ け拡張されて、所定のデータが、 CAV制御方式に基づいて、記録される。エンドュ 一ザは、この一部分、即ち、ゥォブル無し区間の記録領域においてだけ、所定のデ ータが記録済みであり、コンテンツ等の記録情報が未記録状態の情報記録媒体 (所 謂、ブランクディスク（Blank Disc) )に対して、電子配信され、ダウンロードされたコン テンッ等の記録情報を記録する。より詳細には、このブランクディスクには、少なくとも ユーザデータエリアの一部はストレートグループであり、ダミーデータ、又は、所定の アプリケーション、所定のコンテンツ、暗号化キー等の所定のデータが、プリ記録 (プ リライト）されている。コントロールデータゾーン CDZも、プリ記録されていてもよい。 The type of information recording medium power ^ type A ”and the recording procedure“ Case 1 ”is commercially available with predetermined data pre-recorded in the recording area of the wobbleless section and released to the end user. It is a type. This can be used for electronic distribution. Specifically, by using a special pre-recorder, a predetermined length “a” is placed in the first method area A1 (radius position between “a point” and “b point”) in FIG. 10 described above. The specified data is recorded on the basis of the CAV control method. The endorser does a predetermined data only in this part, that is, in the recording area of the section without wobble. Recorded information such as content that has been electronically distributed and downloaded to an information recording medium (so-called “Blank Disc”) in which the data has been recorded and the recorded information such as content has not been recorded. Record. More specifically, on this blank disc, at least a part of the user data area is a straight group, and dummy data or predetermined data such as a predetermined application, predetermined content, and encryption key is pre-recorded ( Prewritten). The control data zone CDZ may also be pre-recorded.
[0156] この類型は、次の 4つの特徴を有する。第 1番目の特徴としては、前述した図 10に 示されるように、第 2方式エリア（CLV制御方式によって記録処理が行われる区間）の 終了端と、第 1方式エリア（CAVによって記録処理が行われる区間）に移る時の線速 度は、概ね一致するように記録される。具体的には、第 1方式エリアの開始端よりも、 例えば少なくとも 16ECCブロックだけ手前側の位置を示す所定のアドレス力も記録 が開始され、第 1方式エリアの開始端を示すアドレス以降、 CAVモードに切り替える 。また、第 1方式エリアが、 2箇所ある場合、概ね同様の記録処理が行われる。  [0156] This type has the following four characteristics. The first feature is that, as shown in FIG. 10 described above, the end of the second method area (the section in which the recording process is performed by the CLV control method) and the first method area (the recording process is performed by the CAV). The linear velocity at the time of moving to the next section is recorded so as to be approximately the same. Specifically, recording is also started for a predetermined address force indicating, for example, at least 16 ECC blocks ahead of the start end of the first method area, and the CAV mode is entered after the address indicating the start end of the first method area. Switch. In addition, when there are two first method areas, the same recording process is performed.
[0157] 第 2番目の特徴としては、第 1方式エリアの終了端は、ゥォブル無し区間とゥォブル 有り区間との境界点から、例えば 16ECCブロック程度等の所定長だけ離れたゥォブ ル有り区間内の地点である。第 1方式エリアの終了端を示すアドレスは、所定の計算 (シミュレーション、理論式、経験式、実験式）に基づいて、行われるが、記録クロック を発生するための基準クロック信号発生器を構成する水晶（クリスタル）に起因する、 記録クロックの時間精度の誤差や、情報記録媒体の信号面におけるトラックピッチの ばらつき等によって、位置精度の誤差が生じてしまう。そこで、第 1方式エリアの終了 端における記録クロックと、ゥォブル有り区間にプリフォーマットされたゥォブル (Wobbl e)の周期とは、殆ど同期がとれていない。そこで、第 1方式エリアの終了端における 記録クロックと、ゥォブル有り区間にプリフォーマットされたゥォブルの周期に少なくと も同期（所謂、ロック）させた位置において、 CAVに基づいた記録処理を停止させる ようにしてもよい。  [0157] The second feature is that the end of the first method area is within a wobbled section that is separated from the boundary point between the wobbleless section and the wobbled section by a predetermined length, for example, about 16 ECC blocks. It is a point. The address indicating the end of the first method area is based on a predetermined calculation (simulation, theoretical formula, empirical formula, empirical formula), and constitutes a reference clock signal generator for generating a recording clock. Position accuracy errors occur due to errors in the time accuracy of the recording clock caused by the crystal and variations in the track pitch on the signal surface of the information recording medium. Therefore, the recording clock at the end of the first method area and the period of wobbles pre-formatted in the wobbled section are almost unsynchronized. Therefore, the recording process based on CAV is stopped at a position that is at least synchronized (so-called locked) with the recording clock at the end of the first method area and the period of the wobble preformatted in the section with wobble. It may be.
[0158] 第 3番目の特徴としては、第 1方式エリアの終了端における線速度と、この終了端か ら連続して移行される第 2方式エリアの開始端における線速度とは異なる（所謂、追 記のための線速度に関して)。 [0159] 第 4番目の特徴としては、第 1方式エリアの終了端におけるセクタアドレスは、この終 了端力 連続して移行される第 2方式エリアの開始端におけるプリアドレスとは連続し ないようにしてもよい。言い換えると、ゥォブル無し区間とゥォブル有り区間との境界点 にお 、て、セクタアドレスの不連続点を有するようにしてもよ 、。 [0158] The third feature is that the linear velocity at the end of the first method area is different from the linear velocity at the start of the second method area continuously shifted from the end (so-called (Regarding linear velocity for appending). [0159] The fourth feature is that the sector address at the end of the first method area is not contiguous with the pre-address at the start of the second method area that is continuously shifted. It may be. In other words, the sector address may have a discontinuity at the boundary point between the wobbleless section and the wobbled section.
[0160] 以上の結果、この不連続点が存在するか否かを識別することで、著作権保護のた めのシステムを実現することが可能である。具体的には、存在しないと推定される所 定のセクタアドレスが、実際に存在しない場合、当該情報記録媒体は、正当な情報 記録媒体であると判定することが可能である。他方、存在しないと推定される所定の セクタアドレスが、実際には存在した場合、当該情報記録媒体は、違法な情報記録 媒体であると判定することが可能である。  [0160] As a result of the above, it is possible to realize a copyright protection system by identifying whether or not this discontinuity exists. Specifically, if a predetermined sector address that is presumed not to exist does not actually exist, it is possible to determine that the information recording medium is a legitimate information recording medium. On the other hand, if a predetermined sector address that is presumed not to exist actually exists, it is possible to determine that the information recording medium is an illegal information recording medium.
[0161] 或いは、当該情報記録媒体のファイルシステムに、ファイルデータ等の記録情報を 登録する際に、存在しな ヽと推定される所定のセクタアドレスを先頭アドレスとして保 持するファイルデータを登録しておく。このことにより、仮に、 CAV制御方式及び CL V制御方式によって記録処理を行うことが可能な違法な機器が、ファイルデータ等の 記録情報、及びファイルシステムのコピー (複製)を試みても、存在しないと推定され る所定のセクタアドレスを先頭アドレス（開始アドレス）として保持するファイルデータ を含む記録情報の全てのコピーを、防止することが可能である。  [0161] Alternatively, when recording information such as file data is registered in the file system of the information recording medium, file data that holds a predetermined sector address that is presumed not to exist as a head address is registered. Keep it. As a result, there is no illegal device that can perform recording processing using the CAV control method and CLV control method even if it attempts to copy (copy) the recording information of file data and the file system. It is possible to prevent all copies of recorded information including file data held with a predetermined sector address estimated as the head address (start address).
[0162] (2- 3- 2)「タイプ A」且つ「ケース 2」である類型  [0162] (2-3- 2) Type of “Type A” and “Case 2”
情報記録媒体力 ^タイプ A」であり、記録手順が「ケース 2」である類型は、第 1方式 エリアと、第 2方式エリアとが、エンドユーザの手に渡るときに既にプリ記録されている 場合。これは少量出版などの場合に相当する。第 1方式エリアと、第 2方式エリアとに 記録する方法は、前述した「ケース 1」と、概ね同様である。尚、ユーザデータエリア内 の、第 1記録エリア（ゥォブル無し区間）の記録情報を、ファイルシステムの記録と同時 に又は相前後して記録するようにしてもよい。またユーザデータエリア内の、第 1記録 エリア（ゥォブル無し区間）の記録情報を、例えば DVD— Videoコンテンツ等の記録 情報の一部とするようにしてもよ 、。  The type of information recording medium power ^ type A ”and the recording procedure“ case 2 ”is pre-recorded when the first method area and the second method area reach the end user's hand. If. This is equivalent to small-volume publication. The method of recording in the first method area and the second method area is almost the same as “Case 1” described above. The recording information in the first recording area (no wobble section) in the user data area may be recorded simultaneously with or before or after recording in the file system. Further, the recording information in the first recording area (no wobble section) in the user data area may be a part of the recording information such as DVD-Video content.
[0163] (2- 3- 3)「タイプ B」且つ「ケース 1」である類型  [0163] (2- 3-3) "Type B" and "Case 1"
情報記録媒体力 ^タイプ B」であり、記録手順が「ケース 1」である類型は、ゥォブル 有り区間における第 2方式エリアの開始端におけるプリアドレスが、この開始端へと連 続して移行する第 1方式エリアの終了端におけるセクタアドレスに一致するように、当 該ゥォブル有り区間におけるゥォブル (Wobble)、又はランドプリピット（LPP)によるプリ アドレスが、プリフォーマットされている。記録の動作は、前述した（2— 3— 1)「タイプ A」且つ「ケース 1」である類型と概ね同じである。 The type of information recording medium power ^ type B ”and the recording procedure“ case 1 ”is wobbled. The wobble in the section with wobble (so that the pre-address at the start end of the second scheme area in the section with the sector address at the end end of the first scheme area that continuously transitions to this start end) Wobble) or land pre-pit (LPP) pre-address is pre-formatted. The recording operation is almost the same as the type described in (2-3-1) “Type A” and “Case 1”.
[0164] 特に、第 1方式エリアの終了端におけるセクタアドレスが、第 2方式エリアの開始端 におけるプリアドレスに、一致するように設定されている。従って、第 1方式エリアにお ける記録情報の記録の際に、理想的には、シームレスにリンクされる (接続される）。ま た、実際には、例えば、記録クロックを発生するための基準クロック信号発生器を構 成する水晶（クリスタル）に起因する、記録クロックの時間精度の誤差がある。このため 、第 1方式エリアの終了端におけるセクタアドレスが、第 2方式エリアの開始端におけ るプリアドレスから、多少ずれてしまう可能性がある力 「タイプ A」と比較すると、その ずれは、相対的に小さい。以上の結果、「タイプ A」の場合と比較して、記録すべき C AVZCLV緩衝エリアのデータ量を、小さくすることが可能である。  [0164] In particular, the sector address at the end of the first scheme area is set to match the pre-address at the start of the second scheme area. Therefore, when recording information in the first method area, it is ideally seamlessly linked (connected). In practice, for example, there is an error in the time accuracy of the recording clock due to the crystal forming the reference clock signal generator for generating the recording clock. For this reason, the sector address at the end of the first method area may deviate somewhat from the pre-address at the start of the second method area. Relatively small. As a result of the above, it is possible to reduce the data amount of the CAVZCLV buffer area to be recorded as compared with the case of “type A”.
[0165] (2- 3-4)「タイプ B」且つ「ケース 2」である類型  [0165] (2 3-4) Type of “Type B” and “Case 2”
情報記録媒体力 ^タイプ B」であり、記録手順が「ケース 2」である類型は、第 1方式 エリアと、第 2方式エリアとが、エンドユーザの手に渡るときに既にプリ記録されている 場合。これは少量出版などの場合に相当する。第 1方式エリアと、第 2方式エリアとに 記録する方法は、前述した（2— 3— 3)「タイプ B」且つ「ケース 1」と、概ね同様である  The type of information recording medium power ^ type B ”and the recording procedure“ case 2 ”is pre-recorded when the first method area and the second method area reach the end user's hand. If. This is equivalent to small-volume publication. The method of recording in the first method area and the second method area is almost the same as (2-3-3) “Type B” and “Case 1” described above.
[0166] (3) 配信システム [0166] (3) Distribution system
次に、図 16、及び図 17を参照して、本発明の情報記録媒体に対して、記録動作を 行う情報記録装置、並びに、配信動作を行う情報配信装置を備えた配信システムに ついて説明する。  Next, with reference to FIG. 16 and FIG. 17, an information recording apparatus that performs a recording operation on the information recording medium of the present invention, and a distribution system that includes an information distribution apparatus that performs a distribution operation will be described. .
[0167] (3- 1)配信システムの全体構成 [3-167] (3-1) Overall configuration of distribution system
先ず、図 16を参照して、本発明の情報記録媒体に対して、記録動作を行う情報記 録装置、並びに、配信動作を行う情報配信装置を備えた配信システムの全体構成に ついて説明する。ここに、図 16は、本発明の情報記録媒体に対して、記録動作を行 う情報記録装置、並びに、配信動作を行う情報配信装置を備えた配信システムの全 体構成を示したブロック図である。尚、図 16におけるステップ番号は、後述される図 1 7におけるステップ番号と対応している。また、本実施例に係る配信システムにおいて は、 DAO (Disk At Once)方式を採用してもよい。 First, with reference to FIG. 16, an overall configuration of a distribution system including an information recording apparatus that performs a recording operation and an information distribution apparatus that performs a distribution operation on the information recording medium of the present invention will be described. FIG. 16 shows a recording operation performed on the information recording medium of the present invention. 1 is a block diagram showing an overall configuration of a distribution system including an information recording apparatus and an information distribution apparatus that performs a distribution operation. Note that the step numbers in FIG. 16 correspond to the step numbers in FIG. In the distribution system according to the present embodiment, a DAO (Disk At Once) method may be adopted.
[0168] 図 16に示されるように、本実施例に係る配信システムは、（i)光ディスク 100に対し て記録動作を行う情報記録装置 200、 (ii)この情報記録装置 200に暗号化コンテン ッを配信する、例えば、ウェブサーバー等の情報配信装置 300、並びに、（iii)これら 情報記録装置 200と情報配信装置 300とが情報の授受を行うことを可能にするイン ターネット等の外部ネットワーク 400を備えて構成されている。  [0168] As shown in FIG. 16, the distribution system according to the present embodiment includes (i) an information recording device 200 that performs a recording operation on the optical disc 100, and (ii) an encrypted content in the information recording device 200. For example, an information distribution device 300 such as a web server, and (iii) an external network 400 such as the Internet that enables the information recording device 200 and the information distribution device 300 to exchange information. It is configured with.
[0169] 前述したように、光ディスク 100は、 NBCA、コントロールデータゾーン CDZ、及び、 暗号ィ匕コンテンツを記録するデータエリア 102を備えて構成されている。より詳細に は、 NBCAには、メディア IDがレーザーカッティングによって記録されている。コント ロールデータゾーン CDZには、ディスクキー等の暗号化情報 Key 1が記録されて!ヽ る。データエリア 102には、後述される情報配信装置 300によって配信された暗号ィ匕 コンテンツ等が、そのまま記録される。  [0169] As described above, the optical disc 100 includes the NBCA, the control data zone CDZ, and the data area 102 for recording the encrypted content. More specifically, the media ID is recorded in NBCA by laser cutting. In the control data zone CDZ, encryption information Key 1 such as a disc key is recorded! In the data area 102, the encrypted content distributed by the information distribution apparatus 300 described later is recorded as it is.
[0170] 情報記録装置 200は、光ディスク 100のメディア IDを、情報配信装置 300へ送信 する。また、情報配信装置 300から受信した暗号ィ匕コンテンツを、光ディスク 100に対 して記録する。  [0170] The information recording device 200 transmits the media ID of the optical disc 100 to the information distribution device 300. In addition, the encrypted content received from the information distribution apparatus 300 is recorded on the optical disc 100.
[0171] 情報配信装置 300は、情報記録装置 200が送信したメディア IDを受信する。受信 したメディア IDに対応したディスクキー等の暗号ィ匕情報 Keyl、及び、タイトルキー等 の暗号ィ匕情報 Key 2を生成する。生成された暗号ィ匕情報 Key 1及び Key2に基づ ヽ て、コンテンツに対して暗号ィ匕等の暗号ィ匕処理を行う。暗号化処理が施されたコンテ ンッ、即ち、暗号ィ匕コンテンツを情報記録装置 200へ配信する。尚、暗号化コンテン ッは、外部ネットワーク 400を経由して配信されるため、暗号ィ匕における暗号化とは 別に、 SSL (Secure Socket Layer)等の盗聴や改ざん等に対応した暗号化を施しても よい。  [0171] The information distribution apparatus 300 receives the media ID transmitted by the information recording apparatus 200. It generates encryption key information Keyl such as a disc key corresponding to the received media ID and encryption key information Key2 such as a title key. Based on the generated encryption key information Key 1 and Key 2, encryption processing such as encryption key is performed on the content. The encrypted content, that is, the encrypted content is distributed to the information recording apparatus 200. Since the encrypted content is distributed via the external network 400, encryption corresponding to eavesdropping and tampering such as SSL (Secure Socket Layer) is performed separately from encryption in the encryption network. Also good.
[0172] 外部ネットワーク 400は、情報記録装置 200と、情報配信装置 300とを、両者に備 えられた図示しない回線接続装置 (例えば、ハブ装置、デジタル終端接続装置 (DS u)、又は、侵入防止用のファイアウォールアプリケーションを実装したルータなど）を 介して、情報の授受が行えるように接続させている。 [0172] The external network 400 includes an information recording device 200 and an information distribution device 300, both of which are connected to a line connection device (not shown) (for example, a hub device, a digital termination connection device (DS u) or a router equipped with a firewall application for intrusion prevention, etc.) so that information can be exchanged.
[0173] (3— 2)情報記録装置及び情報配信装置における各種の処理  (3-2) Various processes in information recording device and information distribution device
次に、図 17に加えて前述した図 16を適宜参照して、本発明の情報記録媒体に対 して、記録動作を行う情報記録装置、及び、配信動作を行う情報配信装置を備えた 配信システムの各種の処理について説明する。ここに、図 17は、本発明の情報記録 装置、及び、情報配信装置における各種の処理を示したフローチャートである。尚、 図 17におけるステップ番号は、図 16におけるステップ番号と対応している。  Next, referring to FIG. 16 described above in addition to FIG. 17 as appropriate, a distribution provided with an information recording apparatus for performing a recording operation and an information distribution apparatus for performing a distribution operation on the information recording medium of the present invention. Various processes of the system will be described. FIG. 17 is a flowchart showing various processes in the information recording apparatus and information distribution apparatus of the present invention. Note that the step numbers in FIG. 17 correspond to the step numbers in FIG.
[0174] (2— 2— 1)情報記録装置における記録処理  [0174] (2-2-1) Recording process in information recording device
先ず、図 17において、光ディスク 100が装填されると、先ず、後述される情報記録 装置の CPU (Central Processing Unit) 250の制御下で、光ピックアップ 202によりシ ーク動作が行われる（ステップ S 101)。  First, in FIG. 17, when the optical disc 100 is loaded, first, a seek operation is performed by the optical pickup 202 under the control of a CPU (Central Processing Unit) 250 of the information recording apparatus described later (step S 101). ).
[0175] 次に、 CPU250の制御下で、光ディスク 100は、コンテンツが配信されるための光 ディスクであるか否かが判定される（ステップ S102)。ここで、光ディスク 100は、コン テンッが配信されるための光ディスクである場合 (ステップ S102 : Yes)、光ディスク 1 00への記録動作に必要な各種の情報が取得される (ステップ S 103)。より具体的に は、 OPC処理が行われ、最適記録パワーが決定されると共に、記録ストラテジーパタ ーンが決定される。  Next, under the control of the CPU 250, it is determined whether or not the optical disc 100 is an optical disc for distributing content (step S102). Here, when the optical disk 100 is an optical disk for delivering content (step S102: Yes), various information necessary for the recording operation on the optical disk 100 is acquired (step S103). More specifically, the OPC process is performed to determine the optimum recording power and the recording strategy pattern.
[0176] 次に、光ディスク 100には、コンテンツが記録済みであるか否かが判定される（ステ ップ S104)。ここで、光ディスク 100には、コンテンツが記録済みではない場合 (ステ ップ S104 :No)、 CPU250の制御下で、光ディスク 100上の、例えば、 NBCA(Narr ow Burst Cutting Area)から、当該光ディスク 100に固有のメディア IDが取得される（ ステップ S 105)。  [0176] Next, it is determined whether or not content has been recorded on the optical disc 100 (step S104). Here, when content has not been recorded on the optical disc 100 (step S104: No), the optical disc 100 is controlled from the optical disc 100 under the control of the CPU 250, for example, from the NBCA (Narrow Burst Cutting Area). A unique media ID is obtained (step S105).
[0177] 次に、 CPU250の制御下で、取得されたメディア IDが SSL等に基づいて暗号化さ れ、例えば、ネッワーク上のサーバー等の情報配信装置 300へ送信される (ステップ S106)。  Next, under the control of the CPU 250, the acquired media ID is encrypted based on SSL or the like, and is transmitted to, for example, the information distribution apparatus 300 such as a server on the network (step S106).
[0178] 他方、ステップ S102の判定の結果、コンテンツが配信されるための光ディスクでな いと判定された場合 (ステップ S 102 : No)、及び、ステップ S 104の判定の結果、光 ディスク 100には、コンテンッが記録済みではあると判定された場合 (ステップ S 104： Yes)、光ディスク 100は、情報記録装置 200から排出される。 [0178] On the other hand, if it is determined in step S102 that the content is not an optical disc for distribution (step S102: No), and the result of determination in step S104 is optical If it is determined that the content has been recorded on the disc 100 (step S104: Yes), the optical disc 100 is ejected from the information recording apparatus 200.
[0179] (2— 2— 2)情報配信装置における配信処理 [0179] (2-2-2) Distribution process in information distribution device
情報配信装置 300では、先ず、 SSL等によって暗号ィ匕されたメディア IDを受信す る（ステップ S 201)。  Information distribution apparatus 300 first receives a media ID encrypted by SSL or the like (step S 201).
[0180] 次に、情報配信装置 300では、受信した SSL等によって暗号ィ匕されたメディア IDを 復号化する (ステップ S 202)。  [0180] Next, the information distribution apparatus 300 decrypts the received media ID encrypted by SSL or the like (step S202).
[0181] 次に、情報配信装置 300では、復号化したメディア IDに対応するディスクキー等の 暗号化情報 Keyl、及び、タイトルキー等の暗号ィ匕情報 Key2が生成される (ステップ[0181] Next, the information distribution apparatus 300 generates encrypted information Keyl such as a disc key corresponding to the decrypted media ID and encrypted key information Key2 such as a title key (step).
S203)。 S203).
[0182] 次に、情報配信装置 300では、生成された暗号ィ匕情報 Key 1及び Key2によって配 信するコンテンツ及びファイルシステムが所定の暗号ィ匕システムによって暗号ィ匕され る（ステップ S 204)。  [0182] Next, in the information distribution apparatus 300, the content and file system distributed by the generated encryption information Key1 and Key2 are encrypted by a predetermined encryption system (step S204).
[0183] 次に、情報配信装置 300では、この生成された暗号ィ匕情報 Key 1及び Key2によつ て暗号化システムに基づいて暗号化された暗号化コンテンツ及びファイルシステムが 、更に、 SSL等によって暗号ィ匕されて、情報記録装置 200へと配信される (ステップ S 205)。より具体的には、 SSL等によって暗号ィ匕された暗号ィ匕コンテンツ及びファイル システムの属性、所謂、 CCI (Copy Control Information)は、配信されている途中に ぉ 、て、再生できな 、ようにするために、ネバーコピー（Never Copy)の属性に設定さ れる。  Next, in the information distribution apparatus 300, the encrypted content and file system encrypted based on the encryption system using the generated encryption key information Key 1 and Key 2 are further converted to SSL or the like. And is distributed to the information recording apparatus 200 (step S 205). More specifically, the encrypted content encrypted by SSL or the like and the attribute of the file system, so-called CCI (Copy Control Information), cannot be reproduced during distribution. To do this, it is set to the Never Copy attribute.
[0184] (2— 2— 3)情報記録装置における動作 続き  [0184] (2-2-3) Operation in the information recording device continued
再び、情報記録装置 200においては、情報配信装置によって配信された、 SSL等 によって暗号ィ匕された暗号ィ匕コンテンツ及びファイルシステムが受信される（ステップ S107)。  Again, the information recording apparatus 200 receives the encrypted content and file system encrypted by SSL or the like distributed by the information distributing apparatus (step S107).
[0185] 次に、情報記録装置 200では、受信された暗号ィ匕コンテンツ及びファイルシステム を SSL等によって復号化する（ステップ S 108)。  Next, the information recording apparatus 200 decrypts the received encrypted content and file system using SSL or the like (step S 108).
[0186] 次に、情報記録装置 200では、暗号ィ匕情報 Keyl及び Key2によって暗号ィ匕された 暗号ィ匕コンテンツ及びファイルシステムを復号ィ匕しな 、で、そのまま光ディスク 100に 記録する (ステップ S109)。より具体的には、所定の暗号化システムに基づいて暗号 化された暗号ィ匕コンテンツ及びファイルシステムの記録は、プリ記録されて 、な 、リー ドインエリア 101の最後の記録領域のアドレスから開始され、プリ記録されているリー ドアウトエリア 103の記録領域のアドレスにおいて終了される。仮に、暗号化されたコ ンテンッ及びファイルシステムの記録力 プリ記録されているリードアウトエリア 103の 記録領域のアドレスまで行われな 、場合、このアドレスまで緩衝用データが記録され るようにしてもよい。尚、リードインエリア 101やリードアウトエリア 103等においては、 緩衝用データが事前に書き込まれて販売されてもよいし、情報記録装置 200によつ て、暗号ィ匕コンテンツの記録の際に新たに書き込まれてもよい。 Next, in the information recording apparatus 200, the encrypted content and the file system encrypted by the encrypted key information Keyl and Key2 are not decrypted, and are directly stored in the optical disc 100. Record (step S109). More specifically, the encrypted content and the file system recording encrypted based on a predetermined encryption system are pre-recorded and started from the address of the last recording area of the lead-in area 101, The process ends at the address of the recording area of the pre-recorded lead-out area 103. If the encrypted content and the recording capacity of the file system are not performed up to the address of the prerecorded recording area of the lead-out area 103, the buffer data may be recorded up to this address. . In the lead-in area 101, the lead-out area 103, etc., the buffer data may be written in advance and sold, or the information recording device 200 may add new data when recording encrypted content. May be written.
[0187] 以上のように、本実施例に係る配信システムは、情報記録装置 200と、情報配信装 置 300との外部ネットワーク 400を介した情報の授受において、暗号ィ匕情報 Key 1及 び Key 2の代わりにメディア IDを送受信する。従って、例えば、コントロールデータゾ ーン等の記録領域に予めプリ記録された暗号ィ匕情報 Keylの機密性を高く保持する 、即ち、セキュアな状態にすることが可能となる。よって、暗号ィ匕情報 Key 1の違法な コピーが行われた記録型情報記録媒体を作成又は製造することは殆ど又は完全に 不可能となる。  [0187] As described above, in the delivery system according to the present embodiment, in the exchange of information between the information recording device 200 and the information delivery device 300 via the external network 400, the encryption key information Key 1 and Key Send / receive media ID instead of 2. Therefore, for example, it is possible to keep the confidentiality of the encryption key information Keyl pre-recorded in a recording area such as a control data zone high, that is, to make it secure. Therefore, it becomes almost or completely impossible to create or manufacture a recordable information recording medium on which an illegal copy of the encryption key information Key 1 has been made.
[0188] (4)他の具体例  [0188] (4) Other examples
次に、図 18から図 21を参照して、本発明に係る「第 1方式エリア」、及び「第 2方式 エリア」を中心とした他の具体例について説明する。  Next, with reference to FIG. 18 to FIG. 21, another specific example centering on the “first method area” and the “second method area” according to the present invention will be described.
[0189] (4 1)他の具体例 その 1  [0189] (4 1) Other examples 1
次に、図 18を参照して、本発明に係る「第 1方式エリア」、及び「第 2方式エリア」を 中心とした他の具体例（その 1)について説明する。ここに、図 18は、本発明の第 1方 式エリア、及び第 2方式エリアと、情報記録媒体の回転数との関係を図式的に示した 一のグラフ（図 18 (a) )、並びに、本発明の第 1方式エリア、及び第 2方式エリアと、ァ ドレスとの関係を図式的に示した模式図（図 18 (b) )である。尚、前述した「（1—4— 2 )第 1回転速度制御方式、及び第 2回転速度制御方式の具体例」と、概ね同様の構 成には、同様の符号番号を付し、それらの説明は適宜省略する。  Next, with reference to FIG. 18, another specific example (part 1) centering on the “first method area” and the “second method area” according to the present invention will be described. FIG. 18 is a graph (FIG. 18 (a)) schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium, and FIG. 18 is a schematic diagram (FIG. 18B) schematically showing the relationship between the first method area and the second method area of the present invention and the address. It should be noted that the same reference numerals are assigned to substantially the same configurations as the above-mentioned “(1-4-2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the same reference numerals are given. Description is omitted as appropriate.
[0190] 図 18 (a)に示されるように、第 1方式エリアの外周端における境界アドレスは、「N」 の値をとり、第 2方式エリアの内周端における境界アドレスは、「N+ 3」の値をとり、連 続していない。 [0190] As shown in Fig. 18 (a), the boundary address at the outer edge of the first method area is "N". The boundary address at the inner periphery of the second method area takes the value “N + 3” and is not continuous.
[0191] 以上の結果、この境界点におけるアドレスの不連続性、即ち、アドレス「N+ 1」及び 「N + 2」が欠落していることに基づいて、例えば電子配信先でありコピーの行われる 対象となる情報記録媒体は、正当な記録型の情報記録媒体であるか、又は違法なコ ピーが行われた情報記録媒体である力否かを、より簡便且つ的確に識別することが 可能である。  As a result of the above, based on the discontinuity of the address at this boundary point, that is, the addresses “N + 1” and “N + 2” are missing, for example, the electronic distribution destination is copied. It is possible to more easily and accurately identify whether the target information recording medium is a legitimate recording type information recording medium or an illegally copied information recording medium. is there.
[0192] (4 2)他の具体例 その 2—  [0192] (4 2) Other specific examples 2—
次に、図 19を参照して、本発明に係る「第 1方式エリア」、及び「第 2方式エリア」を 中心とした他の具体例（その 2)について説明する。ここに、図 19は、本発明の第 1方 式エリア、及び第 2方式エリアと、情報記録媒体の回転数との関係を図式的に示した 他のグラフである。尚、前述した「（1 4 2)第 1回転速度制御方式、及び第 2回転 速度制御方式の具体例」と、概ね同様の構成には、同様の符号番号を付し、それら の説明は適宜省略する。  Next, with reference to FIG. 19, another specific example (part 2) centering on the “first method area” and the “second method area” according to the present invention will be described. FIG. 19 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium. In addition, the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
[0193] 図 19の上側部に示されるように、他の具体例では、第 1方式エリアと、第 2方式エリ ァとの境界点では、（i)第 1方式エリアが存在しない場合の物理記録単位に相当する 第 1ゥォブルと第 2方式エリアのアドレスを規定可能な第 2ゥォブルとの位相が連続し て 、るようにしてもょ 、、又は (ii)第 1ゥォブルの周波数と第 2ゥォブルの周波数とが略 等しくするようにしてちょい。  [0193] As shown in the upper part of Fig. 19, in another specific example, at the boundary point between the first method area and the second method area, (i) the physical in the case where the first method area does not exist The phase of the first wobble corresponding to the recording unit and the second wobble that can specify the address of the second method area may be continuous, or (ii) the frequency of the first wobble and the second Make the wobble frequency approximately equal.
[0194] 以上の結果、図 19の下側部に示されるように、この境界点における回転数の不連 続性の度合 、を小さくすることが可能である。  As a result of the above, as shown in the lower part of FIG. 19, the degree of discontinuity of the rotational speed at this boundary point can be reduced.
[0195] (4 3)他の具体例 その 3—  [0195] (4 3) Other specific examples 3—
次に、図 20を参照して、本発明に係る「第 1方式エリア」、及び「第 2方式エリア」を 中心とした他の具体例（その 3)について説明する。ここに、図 20は、本発明の第 1方 式エリア、及び第 2方式エリアと、情報記録媒体の回転数との関係を図式的に示した 他のグラフである。尚、前述した「（1 4 2)第 1回転速度制御方式、及び第 2回転 速度制御方式の具体例」と、概ね同様の構成には、同様の符号番号を付し、それら の説明は適宜省略する。 [0196] 図 20の上側部に示されるように、他の具体例では、第 1方式エリアと、第 2方式エリ ァとの境界点では、第 1方式エリアが存在しないと仮定した場合の物理記録単位に 相当する第 1ゥォブルの一周期の区切りであると共に、第 2方式エリアのアドレスを規 定可能な第 2ゥォブルの一周期の区切りである Next, with reference to FIG. 20, another specific example (part 3) centering on the “first method area” and the “second method area” according to the present invention will be described. FIG. 20 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium. In addition, the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted. [0196] As shown in the upper part of FIG. 20, in another specific example, the physicality when it is assumed that the first method area does not exist at the boundary point between the first method area and the second method area. It is a period of the first wobble corresponding to the recording unit and a period of the second wobble that can specify the address of the second method area.
以上の結果、図 20の下側部に示されるように、この境界点における回転数の不連 続性の度合いを更に、小さくすることが可能である。  As a result, as shown in the lower part of FIG. 20, the degree of discontinuity of the rotational speed at this boundary point can be further reduced.
[0197] (4 4)他の具体例 その 4  [0197] (4 4) Other examples 4
次に、図 21を参照して、本発明に係る「第 1方式エリア」、及び「第 2方式エリア」を 中心とした他の具体例（その 4)について説明する。ここに、図 21は、本発明の第 1方 式エリア、及び第 2方式エリアと、情報記録媒体の回転数との関係を図式的に示した 他のグラフである。尚、前述した「（1 4 2)第 1回転速度制御方式、及び第 2回転 速度制御方式の具体例」と、概ね同様の構成には、同様の符号番号を付し、それら の説明は適宜省略する。  Next, with reference to FIG. 21, another specific example (part 4) centering on the “first method area” and the “second method area” according to the present invention will be described. FIG. 21 is another graph schematically showing the relationship between the first method area and the second method area of the present invention and the rotation speed of the information recording medium. In addition, the same reference numerals are assigned to substantially the same configurations as the above-described “(1 4 2) Specific examples of the first rotation speed control method and the second rotation speed control method”, and the description thereof will be appropriately described. Omitted.
[0198] 他の具体例では、第 1方式エリアと、第 2方式エリアとの境界点では、第 1方式エリ ァが存在しないと仮定した場合の物理記録単位に相当する第 1ゥォブルに対応され る所定データ量 (例えば 1ECCブロック、又は 1セクタ）の区切りであると共に、第 2方 式エリアのアドレスを規定可能な第 2ゥォブルに対応される所定データ量の区切りで あるようにしてもよい。  [0198] In another specific example, the boundary between the first method area and the second method area corresponds to the first wobble corresponding to the physical recording unit when it is assumed that the first method area does not exist. The predetermined data amount (for example, one ECC block or one sector) may be separated, and the predetermined data amount corresponding to the second wobble capable of defining the address of the second method area may be used.
[0199] 以上の結果、記録された情報を再生する際の再生クロックの連続性を向上させるこ とが可能である。カロえて、例えば 1ECCブロック単位で記録される情報の欠落を殆ど 又は完全になくすことが可能である。  [0199] As a result of the above, it is possible to improve the continuity of the reproduction clock when reproducing the recorded information. For example, it is possible to eliminate almost or completely the lack of information recorded in units of 1 ECC block.
[0200] また、上述した実施例では、情報記録媒体の一例として、追記型や書き換え記録 型の光ディスク、並びに、情報記録装置の一例として光ディスクに係るレコーダー或 いはプレーヤーについて説明した力 本発明は、光ディスク、及び、当該光ディスク のレコーダー或いはプレーヤーに限られるものではなぐ他の高密度記録或いは高 転送レート対応の各種の情報記録媒体、並びに、当該各種の情報記録媒体のレコ ーダー或 、はプレーヤーにも適用可能である。  [0200] Further, in the above-described embodiments, the power described for a write-once or rewritable optical disc as an example of an information recording medium, and a recorder or player related to an optical disc as an example of an information recording device. , Optical discs, and other information recording media compatible with other high-density recording or high transfer rates, not limited to the recorder or player of the optical disc, and the recorder or player of the various information recording media. Is also applicable.
[0201] 本発明は、上述した実施例に限られるものではなぐ請求の範囲及び明細書全体 から読み取れる発明の要旨或いは思想に反しない範囲で適宜変更可能であり、その ような変更を伴う情報記録媒体、情報記録装置及び方法、並びに記録制御用のコン ピュータプログラムもまた本発明の技術的範囲に含まれるものである。 [0201] The present invention is not limited to the above-described embodiments, but the claims and the entire specification. The information recording medium, the information recording apparatus and method, and the computer program for recording control that accompany such changes are also within the technical scope of the present invention. Is included.
産業上の利用可能性 Industrial applicability
本発明に係る情報記録媒体、情報記録装置及び方法、並びに、コンピュータプロ グラムは、例えば DVD (Digital Versatile Disc)、 BD (Blu- ray Disc)、 CD (Compact Disc)等のレーザ光を照射することによって記録及び再生が可能な光ディスク等の情 報記録媒体に利用可能であり、また当該情報記録媒体の情報記録装置等に利用可 能である。また、例えば民生用或いは業務用の各種コンピュータ機器に搭載される 又は各種コンピュータ機器に接続可能な情報記録装置等にも利用可能である。  The information recording medium, information recording apparatus and method, and computer program according to the present invention irradiate laser light such as DVD (Digital Versatile Disc), BD (Blu-ray Disc), and CD (Compact Disc). Therefore, the present invention can be used for an information recording medium such as an optical disc that can be recorded and reproduced, and can be used for an information recording device of the information recording medium. Further, the present invention can also be used for an information recording device or the like that is mounted on or connectable to various computer equipment for consumer use or business use.

Claims

請求の範囲 The scope of the claims
[1] 記録情報を記録又は再生するための、クロック情報及びアドレス情報のうち少なくと も一方である検出可能な制御情報がプリフォーマットされていない第 1記録エリアと、 前記制御情報がプリフォーマットされた一又は複数の第 2記録エリアと、を備え、 前記第 1記録エリアにおいては、第 1回転速度制御方式により前記記録情報の一 部が記録可能であり、  [1] A first recording area in which at least one of clock information and address information for recording information to be recorded or reproduced is not preformatted, and the control information is preformatted. One or more second recording areas, and in the first recording area, a part of the recording information can be recorded by a first rotational speed control method,
前記第 2記録エリアは、第 2回転速度制御方式によりプリフォーマットされており、 前記第 2記録エリアにおける半径位置とアドレスとの関係は、前記第 1記録エリアが 存在しないと共に、前記第 2回転制御方式により前記制御情報がプリフォーマットさ れる場合における、半径位置とアドレスとの所定の関係と、略同一であることを特徴と する情報記録媒体。  The second recording area is preformatted by the second rotational speed control method, and the relationship between the radial position and the address in the second recording area is that the first recording area does not exist and the second rotational control is performed. An information recording medium characterized in that a predetermined relationship between a radial position and an address when the control information is preformatted by a method is substantially the same.
[2] 前記第 1回転速度制御方式は少なくとも一定区間は角速度を一定とする回転速度 制御方式であり、前記第 2回転速度制御方式は線速度を一定とする回転速度制御 方式であることを特徴とする請求の範囲第 1項に記載の情報記録媒体。  [2] The first rotational speed control method is a rotational speed control method in which the angular velocity is constant at least in a certain section, and the second rotational speed control method is a rotational speed control method in which the linear speed is constant. The information recording medium according to claim 1, wherein:
[3] 前記第 1回転速度制御方式により記録された第 1方式エリアと、前記第 2回転速度 制御方式により記録された第 2方式エリアとの境界点においては、 [3] At the boundary between the first method area recorded by the first rotational speed control method and the second method area recorded by the second rotational speed control method,
線速度を一定とする回転制御方式により前記制御情報がプリフォーマットされる場 合における、半径位置とアドレスとの前記所定の関係を満足することを特徴とする請 求の範囲第 1項に記載の情報記録媒体。  2. The request range according to claim 1, wherein the predetermined relationship between the radial position and the address is satisfied when the control information is preformatted by a rotation control method in which the linear velocity is constant. Information recording medium.
[4] 前記記録情報の一部は、前記第 1回転速度制御方式に基づいて、前記第 1記録ェ リアと前記第 2記録エリアとを跨って、記録されて!、ることを特徴とする請求の範囲第[4] A part of the recording information is recorded across the first recording area and the second recording area based on the first rotational speed control method! Claim number
1項に記載の情報記録媒体。 The information recording medium according to item 1.
[5] 前記境界点の前後に位置される記録領域における物理記録単位は、連続して 、る ことを特徴とする請求の範囲第 3項に記載の情報記録媒体 5. The information recording medium according to claim 3, wherein the physical recording units in the recording area located before and after the boundary point are continuous.
[6] 前記境界点の前後に位置される記録領域における物理記録単位は、不連続であ ることを特徴とする請求の範囲第 3項に記載の情報記録媒体。 6. The information recording medium according to claim 3, wherein physical recording units in recording areas located before and after the boundary point are discontinuous.
[7] 前記物理記録単位は、エラーコードを訂正することが可能な記録単位であることを 特徴とする請求の範囲第 5項に記載の情報記録媒体。 7. The information recording medium according to claim 5, wherein the physical recording unit is a recording unit capable of correcting an error code.
[8] 前記物理記録単位は、最小のアドレスが割り振られた記録単位であることを特徴と する請求の範囲第 5項に記載の情報記録媒体。 8. The information recording medium according to claim 5, wherein the physical recording unit is a recording unit to which a minimum address is allocated.
[9] 一の前記第 1方式エリアの内周側に、一の前記第 2方式エリアが位置する際の、一 の前記第 1方式エリアと、一の前記第 2方式エリアとの前記境界点の前後に位置され る記録領域における物理記録単位は、連続することを特徴とする請求の範囲第 6項 に記載の情報記録媒体。 [9] The boundary point between one first method area and one second method area when one second method area is located on the inner periphery side of one first method area 7. The information recording medium according to claim 6, wherein the physical recording units in the recording areas located before and after are continuous.
[10] 前記境界点では、前記第 1方式エリアの境界アドレスと、前記第 2方式エリアの境界 アドレスとは、連続しないことを特徴とする請求の範囲第 1項に記載の情報記録媒体 10. The information recording medium according to claim 1, wherein the boundary address of the first system area and the boundary address of the second system area are not continuous at the boundary point.
[11] 前記第 2記録エリアは、前記境界点から所定長だけ離れた位置に、前記第 1回転 速度制御方式に加えて、又は代えて、前記第 2回転速度制御方式によって、前記記 録情報を記録可能な緩衝エリアを有することを特徴とする請求の範囲第 1項に記載 の情報記録媒体。 [11] The second recording area may be recorded at a position separated from the boundary point by a predetermined length by the second rotational speed control method in addition to or instead of the first rotational speed control method. The information recording medium according to claim 1, further comprising a buffer area capable of recording
[12] 前記緩衝エリアのデータ量は、所定量であることを特徴とする請求の範囲第 11項 に記載の情報記録媒体。  12. The information recording medium according to claim 11, wherein the amount of data in the buffer area is a predetermined amount.
[13] 前記第 1記録エリアにおいて、所定のデータが、更に、プリ記録されていることを特 徴とする請求の範囲第 1項に記載の情報記録媒体。 13. The information recording medium according to claim 1, wherein predetermined data is further pre-recorded in the first recording area.
[14] 前記所定のデータは、記録情報の暗号ィ匕のための暗号ィ匕情報であることを特徴と する請求の範囲第 13項に記載の情報記録媒体。 14. The information recording medium according to claim 13, wherein the predetermined data is encryption information for recording information encryption.
[15] 前記所定のデータは、少なくともユーザデータエリア内にプリ記録されていることを 特徴とする請求の範囲第 13項に記載の情報記録媒体。 15. The information recording medium according to claim 13, wherein the predetermined data is pre-recorded at least in a user data area.
[16] 請求の範囲第 1項に記載の情報記録媒体に、前記記録情報を記録する情報記録 装置であって、 [16] An information recording apparatus for recording the recording information on the information recording medium according to claim 1,
前記記録情報を記録する記録手段と、  Recording means for recording the recording information;
記録の際に、前記第 1回転速度制御方式、又は前記第 2回転速度制御方式に設 定する設定手段と、  Setting means for setting the first rotational speed control method or the second rotational speed control method during recording;
前記第 2記録エリアにおける、前記境界点から所定長だけ離れた開始位置から、設 定された前記第 2回転速度制御方式によって、前記記録情報の他部を記録するよう に前記記録手段を制御する第 1制御手段と、 The other part of the recording information is recorded by the set second rotational speed control method from the start position in the second recording area that is separated from the boundary point by a predetermined length. First control means for controlling the recording means,
前記第 1記録エリアから前記第 2記録エリアへと跨って、少なくとも前記開始位置ま で、設定された前記第 1回転速度制御方式によって、前記記録情報の一部を記録す るように前記記録手段を制御する第 2制御手段と  The recording means is configured to record a part of the recording information by the set first rotational speed control method from at least the start position across the first recording area to the second recording area. Second control means for controlling
を備えることを特徴とする情報記録装置。  An information recording apparatus comprising:
[17] 請求の範囲第 1項に記載の情報記録媒体に、前記記録情報を記録する記録手段 を備える情報記録装置における情報記録方法であって、 [17] An information recording method in an information recording apparatus comprising: recording means for recording the recording information on the information recording medium according to claim 1;
記録の際に、前記第 1回転速度制御方式、又は前記第 2回転速度制御方式に設 定する設定工程と、  A setting step for setting to the first rotation speed control method or the second rotation speed control method at the time of recording;
前記第 2記録エリアにおける、前記境界点から所定長だけ離れた開始位置から、設 定された前記第 2回転速度制御方式によって、前記記録情報の他部を記録するよう に前記記録手段を制御する第 1制御工程と、  In the second recording area, the recording means is controlled to record the other part of the recorded information from the starting position separated from the boundary point by a predetermined length by the set second rotational speed control method. A first control step;
前記第 1記録エリアから前記第 2記録エリアへと跨って、少なくとも前記開始位置ま で、設定された前記第 1回転速度制御方式によって、前記記録情報の一部を記録す るように前記記録手段を制御する第 2制御工程と  The recording means is configured to record a part of the recording information by the set first rotational speed control method from at least the start position across the first recording area to the second recording area. A second control step for controlling
を備えることを特徴とする情報記録方法。  An information recording method comprising:
[18] 請求の範囲第 16項に記載の情報記録装置に備えられたコンピュータを制御する 記録制御用のコンピュータプログラムであって、該コンピュータを、前記記録手段、前 記設定手段、前記第 1制御手段、及び、前記第 2制御手段のうち少なくとも一部とし て機能させることを特徴とするコンピュータプログラム。 [18] A computer program for recording control for controlling a computer provided in the information recording device according to claim 16, wherein the computer includes the recording means, the setting means, and the first control. And a computer program that functions as at least a part of the second control means.
[19] 記録情報を記録又は再生するための、クロック情報及びアドレス情報のうち少なくと も一方である検出可能な制御情報がプリフォーマットされていない第 1記録エリアと、 前記制御情報がプリフォーマットされた一又は複数の第 2記録エリアと、を備え、 前記第 1記録エリアにおいては、第 1回転速度制御方式に基づいて前記記録情報 の一部が記録可能であり、 [19] A first recording area in which at least one of the clock information and the address information for detecting or recording the recorded information is not preformatted, and the control information is preformatted. One or more second recording areas, and in the first recording area, a part of the recording information can be recorded based on a first rotational speed control method,
前記第 2記録エリアは、第 2回転速度制御方式に基づく制御情報がプリフォーマツ トされており、  In the second recording area, control information based on the second rotational speed control method is preformatted,
所定位置に存在する前記第 1記録エリアを挟む 2つの前記第 2記録エリアにおける 半径位置とアドレスとの関係は、前記第 1記録エリアが存在しないと共に、前記第 2回 転制御方式により前記制御情報がプリフォーマットされる場合における、半径位置と アドレスとの所定の関係と、略同一であることを特徴とする情報記録媒体。 In the two second recording areas sandwiching the first recording area existing at a predetermined position The relationship between the radius position and the address is substantially the same as the predetermined relationship between the radius position and the address when the first recording area does not exist and the control information is preformatted by the second rotation control method. An information recording medium characterized by being identical.
[20] 前記記録情報の一部が前記第 1回転速度制御方式に基づいて前記第 1記録エリ ァと前記第 2記録エリアとを跨って記録されており、  [20] A part of the recording information is recorded across the first recording area and the second recording area based on the first rotational speed control method,
前記第 1回転速度制御方式により記録された第 1方式エリアと、前記第 1方式エリア に続く前記第 2回転速度制御方式により記録された第 2方式エリアとの境界点前後に 位置される記録領域における物理記録単位は、連続して!/ヽることを特徴とする請求 の範囲第 19項に記載の情報記録媒体。  Recording area located before and after the boundary between the first method area recorded by the first rotational speed control method and the second method area recorded by the second rotational speed control method following the first method area 20. The information recording medium according to claim 19, wherein the physical recording units are consecutively! /
[21] 前記記録情報の一部が前記第 1回転速度制御方式に基づいて前記第 1記録エリ ァと前記第 2記録エリアとを跨って記録されており、  [21] A part of the recording information is recorded across the first recording area and the second recording area based on the first rotational speed control method,
前記第 1回転速度制御方式により記録された第 1方式エリアと、前記第 1方式エリア に続く前記第 2回転速度制御方式により記録された第 2方式エリアとの境界点前後に 位置される記録領域における物理記録単位は、連続して!/ヽな ヽことを特徴とする請 求の範囲第 19項に記載の情報記録媒体。  Recording area located before and after the boundary between the first method area recorded by the first rotational speed control method and the second method area recorded by the second rotational speed control method following the first method area 20. The information recording medium according to claim 19, wherein the physical recording unit is a continuous! / ヽ.
PCT/JP2006/321499 2005-10-27 2006-10-27 Information recording medium, information recording device and method, and computer program WO2007049745A1 (en)

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