WO2003081590A1

WO2003081590A1 - A copy-protected optical recording medium, a method for driving thereof and a method for manufacturing thereof

Info

Publication number: WO2003081590A1
Application number: PCT/KR2002/000490
Authority: WO
Inventors: Heung-Chan Seung
Original assignee: Settec, Inc.
Priority date: 2002-03-22
Filing date: 2002-03-22
Publication date: 2003-10-02
Also published as: AU2002241376A1

Abstract

A copy-protected optical recording medium, a method for driving thereof and a method for manufacturing thereof, wherein the optical recording medium includes at least one region whose address is designated to be said same with that of other region of the medium.

Description

A COPY-PROTECTED OPTICAL RECORDING MEDIUM, A METHOD

FOR DRIVING THEREOF AND A METHOD FOR MANUFACTURING

THEREOF

[TECHNICAL FILED]

The present invention relates to a copy-protected optical recording

medium on/from which digital contents such as audio, video and computer

readable data recorded/reproduced and a method for manufacturing thereof,

and more particularly to an optical recording medium prevented from being

copied by manipulating address information in a recording area and a method

for manufacturing thereof.

The present invention relates to an optical recording medium, which is or

will be in existence, such as an audio compact disc, a combination of compact

discs, a compact disc including other optical recording medium, a compact disc

included in other optical recording medium and CD-R(CD-Recordable) or CD-

RW(CD-Rewritable).

Moreover, the present invention is also applied to a recording medium

on which digital information such as high quality video signals is recorded, for

example DVD(Digital Versatile Disc or Digital Video disc), DVD-R(DVD-

Recordable), DVD-RW(DVD-Rewritable) and DVD-RAM(DVD-Random Access Memory).

[BACKGROUND ART]

Generally, for example, in order to extract the information recorded on

the recording medium by controlling the medium in regard to a reproducing

apparatus, it is necessary to obtain the address information indicating where the

information is recorded. It is widely known in the art field of the present invention

about the recording type of the information for recording this address information

and the contents information on the recording medium or the information

structure of the recording medium.

Fig. 1 shows an exemplary structure of the information recorded on the

general DVD. As shown in Fig. 1 , the information recorded on the DVD

composes a '(information) sector' with a predetermined quantity of it. Fig. 1

shows the case the information sectors are 17 on the whole. Each of the

information sectors includes the content information of 172 bytes and

horizontally error correcting parity data of 10 bytes. And, the 17-th sector

includes vertically error correcting parity data of 10 bytes. Fig. 1 shows merely

an example of the information structure of the general DVD, so it does not

restrict the scope of the present invention.

In the recording medium with the information structure above, the

address data represents which position on the recording medium certain

information is stored at, and thus a part of the address data may serve as the information indicating the position of the sector. The reproducing apparatus

generates the required control signals by using this address data and performs

the producing operation. For example, when the reproducing apparatus moves

over the recording medium or reproduces the medium from certain position, it

can control the searching operation of the information recorded on the medium

by referring to the address data.

Recently, however, it is possible to read the information recorded on the

optical recording medium easily by using the general personal computer.

Consequently, the very easy and diverse illegal copying prevails. So, the

protection of the copyright of the contents recorded on the medium has become

an urgent issue.

In order to solve the problem various measures have been presented. As

one of the measures, generally, when the audio CD or the CD-ROM is copied,

the information on the lead-in area, namely TOC (Table Of Contents), such as

the information stored in the recording medium and the predetermined control

information, should be read, so there has been a try to solve the problem above.

That is, according to "CD reproducing control method without TOC" (Korean

Patent No. 200879), in order to prevent the illegal copying of the information on

the recording medium by removing the TOC of the CD-ROM or the audio CD

and reproduce both the recording medium prevented from being copied illegally

and a general recording medium, it is disclosed that a reproducing control ^'

method of a CD without a TOC for preventing the illegal copying, includes the steps of:

(^•verifying whether the TOC is read,

(2)going to a predetermined track and reading information from the

track, if the TOC is not read in the step (1),

(3)verifying whether the information, which is read in the step (2), is

read from the recording medium without the TOC and

(4)reading in accordance with a new format if the recording medium

does not have the TOC, or reading in accordance with a general format

if the information is from the lead-in area in the step (3).

According to the method above, However, there is a problem that it is

impossible to reproduce the contents recorded on a copy-protected recording

medium only with a general reproducing apparatus, because the TOC of the

recording medium should be removed artificially, and the reproducing apparatus

should be specially programmed and carried out in accordance with the steps

above. That brings users a problem that they have to buy an appropriate

reproducing apparatus anew besides the recording medium.

[DISCLOSURE OF INVENTION]

Therefore, it is an object of the present invention to provide a copy-

protected optical recording medium capable of being reproduced by a general

reproducing apparatus and a method for manufacturing thereof, which is

capable of overcoming the above drawbacks accompanying the conventional art. The above and other objects can be achieved by combinations described in the

independent claims. The dependent claims define further advantageous and

exemplary combinations of the present invention.

According to the first aspect of the present invention, a copy-protected

optical recording medium capable of being reproduced by a general reproducing

apparatus, comprises at least one overlapping zone whose address values

allocated to information recorded on the recording medium overlap with address

values of another area in the recording medium and driving information for

controlling the reproducing apparatus to read information on the overlapping

zone.

The driving information may comprise a reverse progress instruction

forcing the reproducing apparatus to reverse the direction of the reading

progress before or after the overlapping zone is retrieved.

The driving information may comprise a jumping address instruction

forcing the reproducing apparatus to jump an area whose address values are

equivalent to those of the overlapping zone in reading progress, if the

reproducing apparatus attempts at least two times to read information at a

position whose address value is the same as one of the overlapping zone.

The driving information may comprise a redundant information ignoring

instruction forcing the reproducing apparatus to ignore information, which is read

repeatedly, if the reproducing apparatus attempts at least two times to read

information at a position whose address value is the same as one of the overlapping zone.

The original medium discriminating information may be recorded on the

overlapping zone, the original medium discriminating information discriminating

whether or not a recording medium is original.

The driving information may comprise a duplicate reproduction inhibiting

instruction which inhibits the reproducing apparatus from reproducing a

recording medium considered as a duplicate. At least a part of the driving

information may be recorded on the overlapping zone.

At least a part of an application program required for reproducing

information on the optical recording medium may be recorded on the

overlapping zone. The copy-protected optical recording medium may further

comprise at least one OHD area provided between areas except the overlapping

zone. The copy-protected optical recording medium may further comprise at

least one OHD area provided within the overlapping zone.

According to the second aspect of the present invention, a method for

manufacturing a copy-protected optical recording medium capable of being

reproduced by a general reproducing apparatus, comprises the steps of forming

at least one overlapping zone whose address values allocated to information

recorded on the recording medium overlap with address values of another area

in the recording medium and recording driving information for controlling the

reproducing apparatus to read information on the overlapping zone at a

predetermined position. The driving information may comprise a reverse progress instruction

forcing the reproducing apparatus to reverse the direction of the reading

progress before or after the overlapping zone is retrieved.

The driving information may comprise a jumping address instruction

forcing the reproducing apparatus to jump an area whose address values are

equivalent to those of the overlapping zone in reading progress, if the

reproducing- apparatus attempts at least two times to read information at a

position whose address value is the same as one of the overlapping zone.

The driving information may comprise a redundant information ignoring

repeatedly, if the reproducing apparatus attempts at least two times to read

information at a position whose address value is the same as one of the

overlapping zone.

The original medium discriminating information may be recorded on the

overlapping zone, the original medium discriminating information discriminating

whether or not a recording medium is original.

The driving information may comprise a duplicate reproduction inhibiting

instruction which inhibits the reproducing apparatus from reproducing a

recording medium considered as a duplicate. At least a part of the driving

information may be recorded on the overlapping zone.

At least a part of an application program required for reproducing

information on the optical recording medium may be recorded on the overlapping zone. The method for manufacturing a copy-protected optical

recording medium may further comprise at least one OHD area provided

between areas except the overlapping zone. The method for manufacturing a

copy-protected optical recording medium may further comprise at least one

OHD area provided within the overlapping zone.

The summary of the invention does not necessarily describe all

necessary features of the present invention. The present invention may also be

a sub-combination of the features described above. The above and other

features and advantages of the present invention will become more apparent

from the following description of the embodiments taken in conjunction with the

accompanying drawings.

[BRIEF DESCRIPTION OF DRAWINGS]

Fig. 1 shows an exemplary structure of the information recorded on the

general DVD.

Fig. 2a shows a series of pieces of the information, imaginarily placed in

a row, recorded on from the innermost track to the outermost track of the

general optical recording medium, and the addresses allocated to the series of

pieces of the information.

Fig. 2b shows a series of pieces of the information, imaginarily placed in

a row, recorded on from the innermost track to the outermost track of the copy¬

protected optical recording medium according to the present invention, and the addresses allocated to the series of pieces of the information.

Fig. 3a shows the method for driving the copy-protected optical recording

medium according to the present invention.

Fig. 3b shows a series of pieces of the information extracted from the

recording medium according to the progress shown in Fig. 3a.

Fig. 3c shows the information on the duplicated medium, when the

information is copied from the recording medium according to the sequence

shown in Fig. 3a.

Fig. 4 shows the information, of which a session consists, imaginarily

placed in a row, and recorded on the audio CD in accordance with the Red Book

Standard.

Fig. 5 shows the structure of one of frames of which the information

block recorded on the lead-in area of the information shown in Fig. 4 consists.

Fig. 6 shows the structure of the Q sub channel of the 8 sub channels

consisting of the control information of the frames shown in Fig. 4.

Fig. 7 shows the information, which is imaginarily placed in a row,

recorded on the copy-protected optical recording medium according to an

exemplary embodiment of the present invention.

Fig. 8 is a schematic flow chart showing an exemplary embodiment of

the method for manufacturing the copy-protected optical recording medium

according to the present invention.

Fig. 9 shows the information, which is imaginarily placed in a row, recorded on the copy-protected optical recording medium according to another

exemplary embodiment of the present invention.

[BEST MODE FOR CARRYING OUT THE INVENTION]

The invention will now be described based on the preferred

embodiments, which do not intend to limit the scope ofthe present invention, but

exemplify the invention. All of the features and the combinations thereof

described in the embodiment are not necessarily essential to the invention.

Referring to Fig. 2a and Fig. 2b, Fig. 2a shows a series of pieces of the

information, imaginarily placed in a row, recorded on from the innermost track to

the outermost track of the general optical recording medium, and the addresses

allocated to the series of pieces of the information. In contrast, Fig. 2b shows a

series of pieces of the information, imaginarily placed in a row, recorded on from

the innermost track to the outermost track of the copy-protected optical

recording medium according to the present invention, and the addresses

allocated to the series of pieces of the information.

As shown in Fig. 2a, the addresses of the information on the general

optical recording medium are allocated in order to linearly increase from the

inner tracks to the outer tracks of the medium in order. The linearly increased

graph at the bottom of the series of pieces of the information shows this state.

Also, the addresses may linearly decrease from the inner tracks to the outer

tracks. Moreover, in another optical recording medium already known, the

information may be placed on the medium in disorder by scrambling the address

data. In this way, the reproduction ratio can be increased by correcting the errors,

even if physical damage occurs on the medium. In this case, however, as

supposing the state, where the extracted information is placed in a row as

shown in Fig. 2a, we can understand that the addresses of the information

linearly increase( or decrease) conceptually.

In the meantime, as shown in Fig. 2b, the copy-protected optical

recording medium according to the present invention includes at least one

overlapping zone whose addresses allocated to the information on the medium

overiap each other. The addresses may be either the physical addresses or the

logical addresses. If the physical addresses overlap, the overlapping zone can

be embodied by forming a zone whose addresses overlap at a predetermined

position on the medium during manufacturing the medium. If logical addresses

overlap, the overlapping zone can be embodied by recording the data different

from others on an area, in which each of the physical addresses different from

others is allocated, of the medium but allocating the logical addresses to overlap

each other in a predetermined area. In Fig. 3a, we see the addresses in the

overlapping zone and the previous zone, namely, the zone B overlap.

Moreover, the copy-protected optical recording medium according to the

present invention further includes driving information for controlling the drive of

the reproducing apparatus for reading the information recorded on the

π overlapping zone. The data on the zone B has the same address value as that

of the corresponding data on the overlapping zone, so the driving information is

for driving the reproducing apparatus to access the addresses respectively.

That is, referring to Fig. 3a, Fig. 3a shows the method for driving the

copy-protected optical recording medium according to the present invention. In

order to reproduce the copy-protected optical recording medium according to the

present invention, the already known reproducing apparatus for the optical

recording medium may be used. Here, we assume that the general reproducing

apparatus reads the information from the least address value to the largest

address value of the medium in increasing sequence.

According to the assumption above, the reproducing apparatus first

reads the information on the zone A whose address values are relatively

small(Φ), and goes on toward the zone B whose address values are larger than

those of the zone A(0).

After finishing reading the information of the zone B, the reproducing

apparatus progresses toward the front of the zone C whose address values are

larger than those of the zone B in order to read the information of the zone C(@).

At this time, the driving information instructs the reproducing apparatus

to perform the reading operation backwardly('reverse progress instruction').

Accordingly, the reproducing apparatus starts to read the information toward the

area whose address value gets small, that is, from the back to the front of the

overlapping zone(Θ). Even after finishing reading in the overlapping zone, the reproducing

apparatus keeps on progressing toward the area whose address value

decreases, in other words, the reproducing apparatus progresses toward the

back of the zone A(©)

At this time, the driving information gives the reverse progress instruction

to the reproducing apparatus to perform the reading operation backwardly again.

Consequently, the reproducing apparatus reads the information on the zone B

whose address value gets large again(@)

As finishing reading in the zone B, the reproducing apparatus goes on

toward the front of the zone C again(©), and then reads the information on the

zone C(@).

Therefore, by recording the driving information for giving the reverse

progress instruction mentioned above to the reproducing apparatus onto the

recording medium, the information on the overiapping zone is read.

According to the embodiment above, the information on the area whose

address value is the same as that of the overlapping zone, namely, on the zone

B is extracted repeatedly in case either the reading position of the reproducing

apparatus gets into the overlapping zone in the forward reading progress or the

reading position of the reproducing apparatus gets out of the overlapping zone in

the backward reading progress. A series of pieces of the information extracted

from the recording medium according to the present invention are shown in Fig.

3b, when the general reproducing apparatus reproduces the medium. Meanwhile, according to another exemplary embodiment, in order to

prevent the information on the zone B from being extracted repeatedly, when the

reproducing apparatus attempts to read the information on the back of the zone

A(i.e., after finishing the process ©), jumping address instruction may be added

to the reverse progress instruction, the jumping address instruction for

instructing the reproducing apparatus to go straight to the front of the zone C.

Alternatively, redundant information ignoring instruction may be added, which

instructs the reproducing apparatus to ignore the information extracted

repeatedly on the zone B.

The method for driving the reproducing apparatus before or after the

overlapping zone is retrieved as mentioned above can be various besides the

examples above.

In the meantime, the driving information is activated to be read by the

reproducing apparatus and drive the reproducing apparatus. As the method for

activating the reproducing apparatus, there can be various methods such that

the driving information is read from the recording medium, then loaded into the

memory of the reproducing apparatus and then makes the CPU control the

operation of the reproducing apparatus.

Referring to Fig. 3b again, Fig. 3b shows a series of pieces of the

information extracted from the recording medium according to the progress

shown in Fig. 3a. As shown in fig. 3b, the information on the zone A is extracted,

then the information on the zone B, then on the overlapping zone, then on the zone B once again and then on the zone C. Therefore, according to the present

invention, even if using the general reproducing apparatus, it is possible to

reproduce the whole information on the recording medium by the present

invention normally.

When somebody, however, attempts to copy the information on the

recording medium according to the present invention by a method already

known or newly developed after this application, in order to record the

information from the zone B to the overlapping zone onto the duplicated medium

he or she should use the address data the same as that allocated to the areas.

Consequently, only one of the pieces of the information from the zone B to the

overlapping zone is recorded on the zone with the corresponding address value

of the duplicated medium.

Therefore, when reproducing the duplicated medium, it is impossible to

extract one of the pieces of the information from the zone B to the overiapping

zone of the original medium from the duplicated medium. Accordingly, some

pieces of the information on the original medium remain without being copied to

the duplicated medium. Referring to Fig. 3c, Fig. 3c shows the information on

the duplicated medium, when the information is copied from the recording

medium ' according to the sequence shown in Fig. 3a. In Fig. 3c, only the

information on the zone B is copied.

Moreover, if the driving information is properly copied Onto the duplicated

medium, when the duplicated medium is reproduced, the reverse progress instruction is given before or after the area of the duplicated medium

corresponding to the overlapping zone so that the information on the area is

extracted repeatedly. In the example shown in Fig. 3c, the information on the

zone B of the original medium will be extracted repeatedly.

Therefore, in the duplicated medium, a pieces of data extracted on the

position to which the specific address is allocated are the same each other in

disregard of the reproducing progress direction. That is different from the case a

pieces of data on the position to the same address is allocated can be different

from each other according to the progress direction so that it is possible to

discriminate the duplicated medium from the original medium.

Furthermore, according to another exemplary embodiment, when the

information on the recording medium is read, original medium discriminating

information for discriminating whether or not certain medium is the original may

be recorded on the zone B and the overlapping zone. That is, because the

original medium discriminating information on the overlapping zone is not copied

onto the duplicated medium, the original medium discriminating information is

not read during the reproduction so that it is possible to discriminate the

duplicated medium from the original medium.

Because of discriminating the duplicated medium from the original

medium in the previous way, duplicate reproduction inhibiting instruction may be

included in the driving information in order not to reproduce the medium

considered as the duplicate. Furthermore, by recording, for example, second reverse progress

instruction onto the overlapping zone, when the reproducing apparatus

reproduces the duplicated medium without the second reverse progress

instruction, it reads the information on the overlapping zone, and returns to the

first position of the duplicated medium, so after all it operates improperly.

According to further another exemplary embodiment, by recording all or

a part of the application programs required for reproducing the information on

the recording medium onto the overlapping zone, it may be impossible to

reproduce the duplicated medium.

In the meantime, other exemplary embodiments will now be described in

detail with Fig. 4 to Fig. 9 by taking a compact disc, a kind of the optical

recording medium, as , an example. According to this embodiment, the optical

recording medium has a main content session 100 on which the original

information('main contents') to be reproduced, an auxiliary session 102 including

such overlapping zone as described in regard to Fig. 1 to Fig. 3 in order to

protect the copy.

Generally, a standard, which is called "Red Book Standard", has been

presented in regard to a format for recording the audio contents, such as music,

on the compact disc. According to the Red Book Standard, the audio CD has a

number of tracks and the tracks are indexed and systematized. Referring to Fig.

4, Fig. 4 shows the information, of which a session consists, imaginarily placed

in a row, and recorded on the audio CD in accordance with the Red Book Standard. As shown in Fig. 4, the audio information recorded on the audio CD

includes a lead-in area, which is first accessed by the reproducing apparatus, a

plurality of tracks(track 1 to track N), each of which includes both a pause area

and a data area, and a lead-out area, which indicates the end of the session.

And, also each of the area includes a plurality of information blocks

(which are also called "sectors"), and a block includes 98 frames. Each of the

frames, of which one of the information blocks recorded on the lead-in area

consists, is composed as shown in Fig. 5. That is to say, a frame, which is

recorded on the lead-in area, includes synchronization control information of 3

bytes (Sync), control information of 1 byte (Control), first content data

information of 12 bytes (Datal), P parity information of 4 bytes (P Parity),

second content data information of 12 bytes (Data2) and Q parity information of

4 bytes (Q Parity).

In other words, each of the 98 frames, of which one of the information

blocks recorded on the lead-in area consists, includes the control information of

1 byte and the control information of 1 byte consists of 8 sub codes, each of

which has information of 1 bit. Each of the 8 sub codes is called P, Q, R, S, T, U,

V and W field respectively. The sub codes form 8 sub channels, each of which is

called P, Q, R, S, T, U, V and W sub channel respectively, over the 98 frames

included in one of the information blocks. Each of the sub channels consists of

98 bits altogether including 2 synchronization bits and 96 data bits.

Fig. 6 shows the structure of the Q sub channel of the 8 sub channels consisting of the control information above. Other sub channels (P, R, S, T, U, V

and W sub channel) are similar to the Q sub channel but transfer different

information. As shown in Fig. 6, the first 2 bits of the Q sub channel represent

synchronization patterns SO and S1. The synchronization patterns SO and S1

are used for synchronizing the reproducing apparatus to rotate the recording

medium with the constant leaner velocity.

Following the synchronization patterns SO and S1 , control (C^'ont) field of

4 bits is recorded, which indicates the number of audio channels of the contents

recorded on the recording medium and the existence of emphasis, and

especially may show whether the contents of the track are the audio contents or

the data contents storing the computer readable information.

The next 4 bits are address (Adr) field and designate the mode for a

format of the Q sub channel. Although mode 1 , mode 2, mode 3 etc.,- for

example, are known as the format of the Q sub channel, only the case that the

address field value is "0001", that is, the format mode is mode 1 , will be

described here as an example (if the Q sub channel has the format of mode 1 , it

has a structure like the format shown in Fig. 6).

Track number (TNO) field follows the address field. 8 bits included in the

track number field has a value of 0 to 99 represented in Binary Coded Decimal

(BCD) of the second order. Although the value generally indicates the number of

the track, the track, where the track number field has a value of "00", is the lead-

in track, and the track, where the track number field has a value of "AA", is the lead-out track.

Next, point (Point) field is generally used for indicating the contents by

dividing in further detail, represented by the track number, and in this case 8 bits

included in the point field has a value of 0 to 99 and indicates the index number

in the track. Moreover, in this case three fields indicating an absolute time code

of the fields of the Q sub channel shown in Fig. 6, namely, absolute minute

(AM in), absolute second (ASec) and absolute frame (Afrm) field respectively

have the absolute time values of the track. Here, the absolute time value means

the time interval within which the content is reproduced from the first track to the

track concerned during the reproduction of the overall recording medium, and

the absolute time value is called "address" especially in case of the compact disc.

It is because the absolute time value can be used as the information about what

address in the recording medium certain information is recorded at.

The values of the Q sub channel and the absolute time code, however,

may be used as a different meaning. That is, the value recorded on the absolute

time code field (the absolute minute, the absolute second and the absolute

frame field), indicates the number of the first track of the session, if the point

field included in the Q sub channel of the lead-in area has a value of "A0".

Meanwhile, the value recorded on the absolute time code field indicates the

number of the last track of the session, if the point field has a value of "A1", and

the value recorded on the absolute time code field indicates the address of lead-

out area of the session, if the point field has a value of "A2". Particularly, the value recorded on the absolute time code field indicates the address of the next

session, if the point field has a value of "BO", and the value recorded on the

absolute time code field indicates the address of the first session of the

recording medium, if the point field has a value of "CO".

Following the point field, the three fields, minute (Min), second (Sec) and

frame (Frm), having the information of 8 bits respectively are recorded as the

relative time code fields of the track. The three fields indicate the relative time

code of the track in the session.

Following the three fields, zero (Zero) field is included in front of the

absolute time code fields. Finally, following the absolute time code fields, crc

(CRC) field of 8 bits for error control is included.

Accordingly, by interpreting the information of the Q sub channel of the

lead-in area, the reproducing apparatus for the optical recording medium is

capable of judging which content is recorded, in which format, at which position

on the recording medium and how much quantity of the content. That is, by the

data on the control field, whether the content of certain track on the medium is

the audio content or the information requiring the additional applications for the

reproduction, namely, the data content.

According to the present invention, by manipulating the information on

the control field and recording the content information doubly, when the

recording medium is copied, the information required for duplicating the medium

is not provided without influencing the normal reproducing operation of the reproducing apparatus so that the copy is protected.

Fig. 7 shows the information, which is imaginarily placed in a row,

recorded on the copy-protected optical recording medium according to an

exemplary embodiment of the present invention. In the exemplary embodiment

shown in Fig. 7, the present invention is applied to the audio CD. As shown in

Fig. 7, the copy-protected audio CD according to the present invention includes

the main content session 100 in which the audio contents are stored, and the

auxiliary content session 102 on which the information into which the audio

contents on the main content session 100 are converted, which is added in

order to protect the copy. As mentioned above, the auxiliary content session 102

includes the overlapping zone described in regard to Fig. 1 to Fig. 3.

Furthermore, according to this embodiment, the optical recording medium

further includes the driving information described above.

According to the embodiment, the main content session 100 includes a

lead-in area with a TOC, at least one track(track 1 to track N) in which the main

contents are stored and a lead-out area. Particularly, the TOC of the main

content session 100 includes the information indicating the contents on the

tracks are not the audio contents but the data contents.

The auxiliary content session 102 include a lead-in area with a TOC, an

auxiliary content track in which the auxiliary contents are stored and a lead-out

area. For example, the auxiliary contents may be MP3 files into which the audio

contents are converted in MP3 way. Certain application programs are necessary to reproduce the auxiliary contents, but these applications can be provided by

the computer system with the reproducing apparatus. According to this

embodiment, however, the applications can also be available by recording them

onto the optical recording medium in accordance with the present invention.

According to this embodiment, the auxiliary content session 102 at least

one overlapping zone in which the address values allocated to the auxiliary

contents overlap each other and the driving information for controlling the drive

of the reproducing apparatus to read the information on the overlapping zone.

In this way, it is possible to reproduce the main contents on the main

content session 100 either directly according to the kind of the reading

apparatus(not shown in drawing) during the reproduction of the audio CD in

accordance with the present invention, or by extracting the auxiliary contents on

the auxiliary content session 102 and with the support of the corresponding

applications.

If copying the audio CD according to the present invention, however, a

recording apparatus(e.g., a CD-ROM driver; not shown in drawing) misreads

that the information on the main content session is not the audio contents but

the data contents by the control field of the TOC in the main content session 100,

and thus can not copy the contents properly.

Moreover, because the auxiliary contents of the auxiliary content session

102 are recorded by the method for protecting the copying described in regard

to Fig. 1 to Fig. 3, the recording apparatus cannot copy the contents. Therefore, any part of the recording medium according to the present invention is not

copied successfully.

Next, an exemplary embodiment of the method for manufacturing the

optical recording medium according to the present invention will now be

described in detail with Fig. 8. As shown in Fig. 8, the manufacturing process of

the copy-protected optical recording medium first starts (step 500), a pre-

process is completed by the known method, and the main content session 100

on which the contents such as the audio contents are recorded is formed (step

502). Particularly, in this step 502, it is included that the information indicating

that the contents of the tracks(track 1 to track N) on the main content session

100 are the data contents is included in a predetermined area of the main

content session 100(step 5022). According to this embodiment, the information

indicating that the information on the main content session 100 is the data

contents is included in the TOC of the main content session 100 in the step 5022.

The auxiliary content session 102 then is formed (step 504). Particularly,

in this step 504, it is included that the auxiliary contents are stored according to

the method for protecting the copying the data contents(step 5042). According to

this embodiment, the auxiliary contents are stored in the auxiliary content

session 102 in the step 5042.

Following the step 504, the post-process, which is known, is performed

in respect of the method for manufacturing the copy-protected optical recording

medium according to the present invention. Meanwhile, due to the recent commercialization of the computer

recordable optical recording medium, it is surely possible to prevent the illegal

copying of the recorded information by performing the method including the step

502 to 504 above.

Next, according to another embodiment of the present invention, the

present invention is also applied to the optical recording medium including a

number of the main content sessions. Referring to Fig. 9, Fig. 9 shows the

information, which is imaginarily placed in a row, recorded on the copy-protected

optical recording medium according to another exemplary embodiment of the

present invention. In Fig. 9, the audio CD to which this invention is applied is

taken as an example.

As shown in Fig. 9, the copy-protected audio CD according to the

present invention includes a plurality of main content sessions 100.1 , 100.2 ...

100.n in which the audio contents are stored, and further includes an auxiliary

content session 102 for preventing the copying. The auxiliary content session

102 also includes the overlapping zone described in regard to Fig. 1 to Fig. 3

and the optical recording medium according to the present invention further

includes the driving information.

The main content sessions 100.1 , 100.2 ... 100.n include lead-in areas

with TOCs not shown in drawing, a plurality of tracks in which the audio content

information is stored and lead-out areas. Moreover, an auxiliary session 102

includes a lead-in area with a TOC, a first auxiliary track, a second auxiliary track and a lead-out area.

On each of the lead-in areas of the main content sessions 100.1 , 100.2

... 100.n with the TOCs having the general structure, the control information for

reproducing each of tracks (not shown in drawing) included in the main content

sessions 100.1 , 100.2 ... 100.n is recorded, which includes the information

indicating that all the information on each of the tracks on the main content

sessions 100.1 , 100.2 ... 100.n is the data contents.

Moreover, all the description about the auxiliary content session

according to the embodiment in regard to Fig. 7 is equally applied to the audio

CD according to this embodiment.

Therefore, when the audio CD according to the present invention is

inserted into the reproducing apparatus, the reproducing apparatus reproduces

the audio contents on the main content session 100.1 , 100.2 ... 100.n according

to the kind of the reproducing apparatus or by extracting the data contents on

the auxiliary content session 102 and with the support of the corresponding

applications.

If copying the audio CD according to the present invention, however, a

recording apparatus(e.g., a CD-ROM driver; not shown in drawing) misreads

that the information on the main content session is not the audio contents but

and thus can not copy the contents properly. Moreover, the information on the

auxiliary session 102 cannot also be copied, so any part of the optical recording medium according to the present invention is not copied successfully after all.

Except that this embodiment of the method for manufacturing the optical

recording medium according to the present invention requires the step of

forming the main content session 100.1 , 100.2 ... 100.n in regard to the Fig. 8, it

is the same as the previous embodiment, so the description in detail of it will be

omitted.

According to further another embodiment of the present invention, the

information on the copy-protected optical recording medium may be recorded by

^"the method for protecting the copying of the data contents, which is widely

known, or the method presented by the application titled "method for

manufacturing copy-protected optical disc and optical disc therefor"(Korean

Patent Application No. 2001-200805). For example, at least one OHD area may

be placed between the areas except the overiapping zone. Alternatively, at least

one OHD area may be placed within the overlapping zone.

Although the present invention has been described by way of exemplary

embodiments, it should be understood that those skilled in the art might make

many changes and substitutions without departing from the spirit and the scope

of the present invention which is defined only by the appended claims.

[INDUSTRIALAPPLICABILITY]

According to the present invention, it is possible to provide a copy¬

protected optical recording medium capable of being reproduced without an additional reproducing apparatus and a method for manufacturing thereof.

Claims

[CLAIMS]

1. A copy-protected optical recording medium capable of being reproduced

by a general reproducing apparatus, comprising:

at least one overiapping zone whose address values allocated to

information recorded on said recording medium overlap with address values of

another area in said recording medium; and

driving information for controlling said reproducing apparatus to read

information on said overlapping zone.

2. A copy-protected optical recording medium as claimed in claim 1 ,

wherein said driving information comprises a reverse progress instruction forcing

said reproducing apparatus to reverse direction of said reading progress before

or after information of said overlapping zone is retrieved.

3. A copy-protected optical recording medium as claimed in claim 1 ,

wherein said driving information comprises a jumping address instruction forcing

said reproducing apparatus to jump said area whose address values are

equivalent to those of said overiapping zone in reading progress, if said

reproducing apparatus attempts at least two times to read information at a

position whose address value is the same as one of said overlapping zone.

4. A copy-protected optical recording medium as claimed in claim 1 , wherein said driving information comprises a redundant information ignoring

instruction forcing said reproducing apparatus to ignore information, which is

read repeatedly, if said reproducing apparatus attempts at least two times to

read information at a position whose address value is the same as one of said

overlapping zone.

5. A copy-protected optical recording medium as claimed in claim 1 ,

wherein the original medium discriminating information is recorded on said

overlapping zone, said the original medium discriminating information

discriminating whether or not a recording medium is original.

6. A copy-protected optical recording medium as claimed in claim 1 ,

wherein said driving information comprises a duplicate reproduction inhibiting

instruction which inhibits said reproducing apparatus from reproducing a

recording medium considered as a duplicate.

7. A copy-protected optical recording medium as claimed in claim 1 ,

wherein at least a part of said driving information is recorded on said

overlapping zone.

8. A copy-protected optical recording medium as claimed in claim 1 ,

wherein at least a part of an application program required for reproducing information on said recording medium is recorded on said overlapping zone.

9. A copy-protected optical recording medium as claimed in claim 1 , further

comprising at least one OHD area provided between areas except said

overlapping zone.

10. A copy-protected optical recording medium as claimed in claim 1 , further

comprising at least one OHD area provided within said overlapping zone.

11. A method for manufacturing a copy-protected optical recording medium

capable of being reproduced by a general reproducing apparatus, comprising

said steps of:

forming at least one overlapping zone whose address values allocated to

information recorded on said recording medium overlap with address values of

another area in said recording medium; and

recording driving information for controlling said reproducing apparatus to read

information on said overlapping zone at a predetermined position.

12. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein said driving information comprises a reverse

progress instruction forcing said reproducing apparatus to reverse direction of

said reading progress before or after said overlapping zone is retrieved.

13. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein said driving information comprises a jumping

address instruction forcing said reproducing apparatus to jump an area whose

address values are equivalent to those of said overlapping zone in reading

progress, if said reproducing apparatus attempts at least two times to read

information at a position whose address value is the same as one of said

overlapping zone.

14. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein said driving information comprises a redundant

information ignoring instruction forcing said reproducing apparatus to ignore

information, which is read repeatedly, if said reproducing apparatus attempts at

least two times to read information at a position whose address value is the

same as one of said overlapping zone.

15. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein original medium discriminating information is

recorded on said overiapping zone, said original medium discriminating

information discriminating whether or not a recording medium is original.

16. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein said driving information comprises a duplicate reproduction inhibiting instruction which inhibits said reproducing apparatus from

reproducing a recording medium considered as a duplicate.

17. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein at least a part of said driving information is

recorded on said overlapping zone.

18. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , wherein at least a part of an application program required

for reproducing information on said optical recording medium is recorded on said

overlapping zone.

19. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , further comprising at least one OHD area provided

between areas except said overlapping zone.

20. A method for manufacturing a copy-protected optical recording medium

as claimed in claim 11 , further comprising at least one OHD area provided within

said overlapping zone.