US20100161092A1 - Method of managing lyric data of audio data recorded on a rewritable recording medium - Google Patents

Method of managing lyric data of audio data recorded on a rewritable recording medium Download PDF

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US20100161092A1
US20100161092A1 US12/717,878 US71787810A US2010161092A1 US 20100161092 A1 US20100161092 A1 US 20100161092A1 US 71787810 A US71787810 A US 71787810A US 2010161092 A1 US2010161092 A1 US 2010161092A1
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text
subtitle stream
navigation information
data
lyric
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Hyung Sun Kim
Kang Soo Seo
Byung Jin Kim
Soung Hyun Um
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    • 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements
    • G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
    • G10H2220/005—Non-interactive screen display of musical or status data
    • G10H2220/011—Lyrics displays, e.g. for karaoke applications
    • 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
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/216—Rewritable discs
    • 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
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/218—Write-once discs
    • 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
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • 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
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • G11B2220/2575—DVD-RAMs

Definitions

  • the present invention relates to a lyric data managing method that records lyrics associated with recorded audio data in a file separated from audio data management information called RTR_AMG (Real Time Record Audio Management) allocated in a rewritable recording medium, and that searches for a lyric unit written in the separate file prior to reproducing recorded audio data.
  • RTR_AMG Real Time Record Audio Management
  • a disk-type recording medium such as a Compact Disk (CD) can store high-quality digital audio data permanently, so that it is very popular recording medium in these days.
  • CD Compact Disk
  • DVD Digital Versatile Disk
  • a DVD can store much larger size than a CD, that is, high-quality moving pictures or audio data are recorded in a DVD for much longer time. Therefore, a DVD will be used widely in the near future.
  • DVD-ROM for read-only
  • DVD-R for write-once
  • DVD-RAM or DVD-RW for rewritable.
  • rewritable DVD the standardization of data writing format is in progress.
  • FIG. 1 is a block diagram of an optical disk device that records/reproduces audio data to/from a recording medium.
  • the disk device configured as FIG. 1 comprises an optical pickup 11 reading signals recorded in a rewritable DVD 10 such as a DVD-RW and writing data streams processed into writable signals onto the rewritable DVD 10 ; a reproduced signal processor 12 restoring the read signals into compressed digital data; a decoder 13 decoding the compressed digital data to original data; a sampler 18 digitizing an inputted analog signal at a preset sampling rate; an encoder 17 encoding the digitized LPCM data into MPEG-, or AC3-formatted data; a writing processor 16 converting the encoded data from the encoder 17 or LPCM data from the sampler 18 into signals suitable to be written; a controller 14 controlling all elements to conduct user's command such as playback or record; and a memory 15 for storing data temporally.
  • a rewritable DVD 10 such as a DVD-RW and writing data streams processed into writable signals onto the rewritable DVD 10
  • the sampler 18 samples the analog signal at the preset sampling rate.
  • Each sampled signal which is LPCM data, is applied to the encoder 17 that encodes a block of sampled data into compressed data of pre-specified format, for example, MPEG format.
  • the compressed data are then applied to the writing processor 16 .
  • the writing processor 16 converts a series of the compressed data into binary signals which are written in mark/space patterns on the writable DVD 10 . Already-compressed digital data from outside are directly processed by the writing processor 16 to be written onto the writable DVD 10 .
  • FIG. 2 shows the structure of RTR_AMG (Real Time Record Audio ManaGement) recorded as navigation data on a rewritable disk.
  • the RTR_AMG includes RTR_AMGI (RTR Audio Manager General Information), AUDFIT (AUDio File Information Table), ASVFIT (Audio Still Video File Information Table), ORG_PGCI (ORiGinal PGC (ProGram Chain) Information), UD_PGCIT (User Defined PGC Information Table), TXTDT_MG (TeXT DaTa ManaGer), and MNFIT (MaNufacturer's Information Table).
  • the TXTDT_MG can include lyrics of recorded songs. Therefore, when the controller 14 selects and reproduces a recorded song from the rewritable disk 10 , it is able to present lyric text in characters on a screen by reading it from the TXTDT_MG.
  • the size of RTR_AMG including the TXTDT_MG may be restricted below a certain limit, e.g., 512 KBytes for the purpose of saving resources of a disk player.
  • a certain limit e.g., 512 KBytes for the purpose of saving resources of a disk player.
  • an MP3 audio file which is relatively small in size by lossy coding, is about 2-4 Mbytes in size
  • a DVD-RW of about 4.7 GBytes in storage capacity is able to store more than about 1,000 MP3 audio files.
  • the size of RTR_AMG including TXTDT_MG would exceed by far the size limitation.
  • a method of managing lyrics for audio data recorded on a rewritable disk in accordance with the present invention records lyric data of audio data recorded on a rewritable recording medium in a file separated from management information for the recorded audio data, and records in the management information search information to point to respective lyric data of the recorded audio data.
  • a method of reading lyrics for audio data recorded on a rewritable disk in accordance with the present invention reads management information for reproduction control of recorded audio data, and searches a file, separated from the management information, for lyric data based on the read management information.
  • FIG. 1 is a block diagram of an optical disk device that records/reproduces audio data to/from a recording medium
  • FIG. 2 shows the structure of RTR_AMG (Real Time Record Audio ManaGement) recorded as navigation data on a rewritable disk;
  • FIG. 3 shows an RTR_AMG including an ALFIT (Audio Lyric File Information Table) according to an embodiment of the present invention
  • FIG. 4 shows cell information including an audio lyric unit search pointer number according to an embodiment of the present invention
  • FIG. 5 shows cell information including an audio lyric unit search pointer number and the number of the search pointer numbers according to another embodiment of the present invention
  • FIG. 6 shows a structure of an ALFIT in RTR_AMG including information to point to individual audio lyric units in an audio lyric file
  • FIG. 7 shows another structure of an ALFIT in RTR_AMG including information to point to individual audio lyric units in an audio lyric file
  • FIG. 8 shows a schematic procedure to find an audio lyric unit related with a selected song
  • FIG. 9 shows program information including an audio lyric unit search pointer number according to another embodiment of the present invention.
  • an audio data recording method in accordance with the present invention, after small-sized audio data such as an MP3 audio file, which is relatively small in size by lossy coding, is recorded onto a rewritable disk of large capacity, a lyric related with a recorded song is recorded in a specific file named, e.g., ‘AR_Lyric.ARO’ that is separated from a management information file, namely, RTR_AMG file. Then, search information to point to respective lyrics in the separate file is recorded in the RTR_AMG.
  • a specific file e.g., ‘AR_Lyric.ARO’ that is separated from a management information file, namely, RTR_AMG file.
  • FIG. 3 shows an RTR_AMG including an ALFIT (Audio Lyric File Information Table) according to an embodiment of the present invention.
  • the RTR_AMG of FIG. 3 includes RTR_AMGI, ASVFIT, ORG_PGCI, UD_PGCIT, TXTDT_MG, and MNFIT the same as FIG. 2 .
  • the RTR_AMG further includes an ALFIT.
  • the ORG_PGCI is composed of PGC_GI (PGC General Information), plural pieces of PGI ‘PGI # 1 -#m’, a plurality of CI_SRPs (Cell Information SeaRch Pointers), and plural pieces of CI (Cell Information) ‘CI # 1 -#n’, as shown in FIG. 4 .
  • PGC_GI PGC General Information
  • CI_SRPs Cell Information SeaRch Pointers
  • CI Cell Information
  • Each CI includes cell type information ‘C_TY’, playback information ‘PB_INF’, an AOBI_SRPN (AOB Information SeaRch Pointer Number) for indexing information location of a related AOB (or an MP3-formatted song), an ASVUI_SRPN (ASVU (Audio Still Video Unit) Information SeaRch Pointer Number) for indexing information location of still video data linked with an AOB, and an ALUI search pointer number ‘ALUI_SRPN’ for indexing a corresponding ALUI search pointer among pointers in the ALFIT.
  • AOB Information SeaRch Pointer Number for indexing information location of a related AOB (or an MP3-formatted song
  • ASVUI_SRPN ASVU (Audio Still Video Unit) Information SeaRch Pointer Number
  • ALUI_SRPN ALUI search pointer number
  • the ALUI search pointer number ‘ALUI_SRPN’ is indicative of an index number of an ALU (Audio Lyric Unit) search pointer in the ALFIT that has location information of an ALU written in the separate file ‘AR_Lyric.ARO’
  • the CI may be structured differently.
  • FIG. 5 shows another structure of CI.
  • the CI of FIG. 5 is to accommodate plural ALUI search pointer numbers. This is useful for writing several lyric languages for a single song.
  • An ALU allocated in the file ‘AR_Lyric.ARO’ can contain user data entered by user inputs, instead of lyric text of an associated song.
  • the cell type ‘C_TY’ identifies that an EMD file is related.
  • the CI includes no information related with lyric such as the fields ‘ALUI_SRPN’.
  • FIG. 6 shows the structure of the ALFIT in RTR_AMG.
  • the ALUI_SRPN in CI indexes an ALU search pointer in the ALFIT, as aforementioned.
  • the ALFIT is composed of ALFITI (ALFIT Information) and ALFI.
  • the ALFITI includes fields of ‘ALFI_Ns’ reserved for the number of audio lyric information files, ‘AL_I_Ns’ for the number of pieces of audio lyric information, and ‘ALFIT_EA’ for an end address of ALFIT.
  • the ALFI is composed of ALFI_GI (ALFI General Information) and a plurality of ALUI (Audio Lyric Unit Information) search pointers, each includes ‘ALU_SA’ for a start address of a lyric unit, ‘ALU_SZ’ for size of a lyric unit, and ‘L_ATR’ for attribute of a lyric text.
  • ALFI_GI ALFI General Information
  • ALUI Analog Lyric Unit Information
  • Each ALUI search pointer points to location of a corresponding ALU (Audio Lyric Unit) in the specific file ‘AR_Lyric.ARO’ that is separated from the RTR_AMG, as shown in FIG. 6 .
  • Each ALU in the file ‘AR_Lyric.ARO’ includes a lyric text associated with a single recorded song.
  • a disk player reads the number written in ALUI_SPRN of CI associated with the selected AOB, and specifies an ALUI search pointer contained in the field ‘ALFI’ by the read number.
  • ALUI search pointer contained in the field ‘ALFI’ by the read number.
  • the location of a lyric unit related with the selected song is found in the file ‘AR_Lyric.ARO’ by location address in the specified pointer. Therefore, lyric text can presented along with reproduced audio data.
  • the disk player may process the read lyric text based on the lyric attribute written in the field ‘L_ATR’ of the current ALUI search pointer. In other words, if the attribute is indicative of a certain language, the disk player converts the lyric text written in the lyric unit to characters of corresponding language font.
  • the lyric attribute field can be allocated in a lyric unit in the file ‘AR_Lyric.ARO’ instead of in the ALFIT, as shown in FIG. 7 .
  • RTR_AMG and the lyric file ‘AR_Lyric.ARO’ are constructed as described above, a lyric related with a selected song, namely, audio data is found through the search information in RTR_AMG as follows and then presented along with the selected audio data.
  • FIG. 8 shows a schematic procedure to find an ALU related with a selected song.
  • the controller 14 of the disk device of FIG. 1 searches the ORG_PGC of RTR_AMG for a piece of PGI and/or a piece of CI that is associated with a recorded song selected by a user. If a user selects a program chain including a plurality of recorded songs, the controller 14 searches the ORG_PGI for a piece of PGI and/or CI associated with the first song of them.
  • controller 14 checks the field ‘C_TY’ in the found CI to know whether the associated audio data have been encoded to special EMD format.
  • the controller 14 reads the numbers written in AOBI_SRPN and ASVUI_SRPN of CI associated with the selected AOB, namely, song, and reproduces recorded audio data indexed by the number in AOBI_SRPN and still video unit indexed by the number in ASVUI_SRPN.
  • the still video unit is presented in a series of still pictures.
  • the controller 14 reads the number written in ALUI_SRPN of that CI, and then specifies an ALUI search pointer contained in the ‘ALFIT’ of RTR_AMG by the read number.
  • the controller 14 examines three fields ‘ALU_SA’, ‘ALU_SZ’, and ‘L_ATR’ included in the specified ALUI search pointer.
  • the location of a lyric unit related with the selected song is found in the file ‘AR_Lyric.ARO’ by the address written in the ‘ALU_SA’. Lyric text is read into the memory 15 from that location as size as the ‘ALU_SZ’ specifies. The read text is processed to an adequate language based on lyric attribute defined by the field ‘L_ATR’. Consequently, the processed lyric is presented onto a screen during playback of the selected audio data.
  • the controller 14 processes the lyric text based on the lyric attribute written therein to present into adequate language.
  • the controller 14 selects only one ALUI_SRPN among them based on user's selection or selects them sequentially. In latter case, lyric units are sequentially presented in the same sequence that the ALUI search pointer numbers are placed.
  • the controller 14 executes a decoding algorithm suitable for that format to play back the selected song.
  • the type field indicating type of audio data and the number field ‘ALUI_SRPN’ can be allocated in PGI instead of in CI, as shown in FIG. 9 , because a piece of PGI is also assigned to a single program, namely, AOB.
  • type field allocated in PGI is called program type ‘PG_TY’.
  • the above-explained lyric data managing method for a rewritable disk of large storage capacity can accommodate entire lyrics of many small-sized songs recorded on a rewritable disk without any increment of the size of RTR_AMG over a given size limitation. Consequently system requirement of a disk device is alleviated to manage recorded audio data.

Abstract

The present invention relates to a lyric data managing method that records lyrics associated with recorded audio data in a file separated from audio data management information called RTR_AMG (Real Time Record Audio Management) allocated for reproduction control in a rewritable recording medium, and that searches for a lyric unit written in the separate file prior to reproducing recorded audio data. The present method records lyric data of audio data recorded on a rewritable recording medium in a file separated from management information for the recorded audio data, and records search information to point to respective lyric data in the management information. Thus, the size of the management information is not increased even though lyrics of more than 1,000 audio files are recorded on a rewritable disk. As a result, system requirement of a disk device is alleviated to manage recorded audio data.

Description

  • This application is a Continuation of co-pending application Ser. No. 10/305,027 filed on Nov. 27, 2002, which claims priority to application Ser. No. 01-74383 filed in Korea, on Nov. 27, 2001. The entire contents of all of the above applications is hereby incorporated by reference.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to a lyric data managing method that records lyrics associated with recorded audio data in a file separated from audio data management information called RTR_AMG (Real Time Record Audio Management) allocated in a rewritable recording medium, and that searches for a lyric unit written in the separate file prior to reproducing recorded audio data.
  • 2. Description of the Related Art
  • A disk-type recording medium such as a Compact Disk (CD) can store high-quality digital audio data permanently, so that it is very popular recording medium in these days.
  • Recently, a Digital Versatile Disk (called ‘DVD’ hereinafter) has been developed as a new disk-type recording medium. A DVD can store much larger size than a CD, that is, high-quality moving pictures or audio data are recorded in a DVD for much longer time. Therefore, a DVD will be used widely in the near future.
  • There are three types in a DVD, DVD-ROM for read-only, DVD-R for write-once, and DVD-RAM or DVD-RW for rewritable. For a rewritable DVD, the standardization of data writing format is in progress.
  • FIG. 1 is a block diagram of an optical disk device that records/reproduces audio data to/from a recording medium.
  • The disk device configured as FIG. 1 comprises an optical pickup 11 reading signals recorded in a rewritable DVD 10 such as a DVD-RW and writing data streams processed into writable signals onto the rewritable DVD 10; a reproduced signal processor 12 restoring the read signals into compressed digital data; a decoder 13 decoding the compressed digital data to original data; a sampler 18 digitizing an inputted analog signal at a preset sampling rate; an encoder 17 encoding the digitized LPCM data into MPEG-, or AC3-formatted data; a writing processor 16 converting the encoded data from the encoder 17 or LPCM data from the sampler 18 into signals suitable to be written; a controller 14 controlling all elements to conduct user's command such as playback or record; and a memory 15 for storing data temporally.
  • If an analog signal is applied to the disk device of FIG. 1, the sampler 18 samples the analog signal at the preset sampling rate. Each sampled signal, which is LPCM data, is applied to the encoder 17 that encodes a block of sampled data into compressed data of pre-specified format, for example, MPEG format. The compressed data are then applied to the writing processor 16.
  • The writing processor 16 converts a series of the compressed data into binary signals which are written in mark/space patterns on the writable DVD 10. Already-compressed digital data from outside are directly processed by the writing processor 16 to be written onto the writable DVD 10.
  • After recording of audio data, navigation data for them are created and then recorded the writable DVD 10.
  • FIG. 2 shows the structure of RTR_AMG (Real Time Record Audio ManaGement) recorded as navigation data on a rewritable disk. The RTR_AMG includes RTR_AMGI (RTR Audio Manager General Information), AUDFIT (AUDio File Information Table), ASVFIT (Audio Still Video File Information Table), ORG_PGCI (ORiGinal PGC (ProGram Chain) Information), UD_PGCIT (User Defined PGC Information Table), TXTDT_MG (TeXT DaTa ManaGer), and MNFIT (MaNufacturer's Information Table).
  • The TXTDT_MG can include lyrics of recorded songs. Therefore, when the controller 14 selects and reproduces a recorded song from the rewritable disk 10, it is able to present lyric text in characters on a screen by reading it from the TXTDT_MG.
  • Consequently, when a user selects a recorded song to play back from the rewritable DVD 10, he or she is able to view its lyric on a screen.
  • By the way, the size of RTR_AMG including the TXTDT_MG may be restricted below a certain limit, e.g., 512 KBytes for the purpose of saving resources of a disk player. Furthermore, because an MP3 audio file, which is relatively small in size by lossy coding, is about 2-4 Mbytes in size, a DVD-RW of about 4.7 GBytes in storage capacity is able to store more than about 1,000 MP3 audio files. Thus, if all lyrics of such many recorded MP3 audio files were written in the TXTDT_MG, the size of RTR_AMG including TXTDT_MG would exceed by far the size limitation.
    • SUMMARY OF THE INVENTION
  • It is an object of the present invention to provide a lyric data managing method that records lyrics associated with recorded audio data in a file separated from RTR_AMG allocated in a rewritable recording medium and records search information in the RTR_AMG to refer to respective lyrics in the separate file in order that a lyric may be easily found prior to reproducing corresponding audio data.
  • It is another object of the present invention to provide another lyric data managing method that reproduces audio data and lyric data in the separate file that are pointed by the search information in RTR_AMG.
  • A method of managing lyrics for audio data recorded on a rewritable disk in accordance with the present invention records lyric data of audio data recorded on a rewritable recording medium in a file separated from management information for the recorded audio data, and records in the management information search information to point to respective lyric data of the recorded audio data.
  • A method of reading lyrics for audio data recorded on a rewritable disk in accordance with the present invention reads management information for reproduction control of recorded audio data, and searches a file, separated from the management information, for lyric data based on the read management information.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The accompanying drawings, which are included to provide a further understanding of the invention, illustrate the preferred embodiments of the invention, and together with the description, serve to explain the principles of the present invention.
  • In the drawings:
  • FIG. 1 is a block diagram of an optical disk device that records/reproduces audio data to/from a recording medium;
  • FIG. 2 shows the structure of RTR_AMG (Real Time Record Audio ManaGement) recorded as navigation data on a rewritable disk;
  • FIG. 3 shows an RTR_AMG including an ALFIT (Audio Lyric File Information Table) according to an embodiment of the present invention;
  • FIG. 4 shows cell information including an audio lyric unit search pointer number according to an embodiment of the present invention;
  • FIG. 5 shows cell information including an audio lyric unit search pointer number and the number of the search pointer numbers according to another embodiment of the present invention;
  • FIG. 6 shows a structure of an ALFIT in RTR_AMG including information to point to individual audio lyric units in an audio lyric file;
  • FIG. 7 shows another structure of an ALFIT in RTR_AMG including information to point to individual audio lyric units in an audio lyric file;
  • FIG. 8 shows a schematic procedure to find an audio lyric unit related with a selected song; and
  • FIG. 9 shows program information including an audio lyric unit search pointer number according to another embodiment of the present invention.
    •  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
  • In order that the invention may be fully understood, a preferred embodiment thereof will now be described with reference to the accompanying drawings.
  • In an audio data recording method in accordance with the present invention, after small-sized audio data such as an MP3 audio file, which is relatively small in size by lossy coding, is recorded onto a rewritable disk of large capacity, a lyric related with a recorded song is recorded in a specific file named, e.g., ‘AR_Lyric.ARO’ that is separated from a management information file, namely, RTR_AMG file. Then, search information to point to respective lyrics in the separate file is recorded in the RTR_AMG.
  • FIG. 3 shows an RTR_AMG including an ALFIT (Audio Lyric File Information Table) according to an embodiment of the present invention.
  • The RTR_AMG of FIG. 3 includes RTR_AMGI, ASVFIT, ORG_PGCI, UD_PGCIT, TXTDT_MG, and MNFIT the same as FIG. 2. However, the RTR_AMG further includes an ALFIT.
  • The ORG_PGCI is composed of PGC_GI (PGC General Information), plural pieces of PGI ‘PGI #1-#m’, a plurality of CI_SRPs (Cell Information SeaRch Pointers), and plural pieces of CI (Cell Information) ‘CI #1-#n’, as shown in FIG. 4. Each CI includes cell type information ‘C_TY’, playback information ‘PB_INF’, an AOBI_SRPN (AOB Information SeaRch Pointer Number) for indexing information location of a related AOB (or an MP3-formatted song), an ASVUI_SRPN (ASVU (Audio Still Video Unit) Information SeaRch Pointer Number) for indexing information location of still video data linked with an AOB, and an ALUI search pointer number ‘ALUI_SRPN’ for indexing a corresponding ALUI search pointer among pointers in the ALFIT.
  • The ALUI search pointer number ‘ALUI_SRPN’ is indicative of an index number of an ALU (Audio Lyric Unit) search pointer in the ALFIT that has location information of an ALU written in the separate file ‘AR_Lyric.ARO’
  • The CI may be structured differently. FIG. 5 shows another structure of CI. The CI of FIG. 5 is to accommodate plural ALUI search pointer numbers. This is useful for writing several lyric languages for a single song. An ALU allocated in the file ‘AR_Lyric.ARO’ can contain user data entered by user inputs, instead of lyric text of an associated song.
  • If CI is related with an EMD (Electronic Music Distribution) data file of which data are uniquely formatted, the cell type ‘C_TY’ identifies that an EMD file is related. In this case, the CI includes no information related with lyric such as the fields ‘ALUI_SRPN’.
  • FIG. 6 shows the structure of the ALFIT in RTR_AMG. The ALUI_SRPN in CI indexes an ALU search pointer in the ALFIT, as aforementioned.
  • The ALFIT is composed of ALFITI (ALFIT Information) and ALFI. The ALFITI includes fields of ‘ALFI_Ns’ reserved for the number of audio lyric information files, ‘AL_I_Ns’ for the number of pieces of audio lyric information, and ‘ALFIT_EA’ for an end address of ALFIT.
  • The ALFI is composed of ALFI_GI (ALFI General Information) and a plurality of ALUI (Audio Lyric Unit Information) search pointers, each includes ‘ALU_SA’ for a start address of a lyric unit, ‘ALU_SZ’ for size of a lyric unit, and ‘L_ATR’ for attribute of a lyric text.
  • The ALU_SA in each ALUI search pointer points to location of a corresponding ALU (Audio Lyric Unit) in the specific file ‘AR_Lyric.ARO’ that is separated from the RTR_AMG, as shown in FIG. 6. Each ALU in the file ‘AR_Lyric.ARO’ includes a lyric text associated with a single recorded song.
  • Thus, if a song, namely, an AOB is chosen, a disk player reads the number written in ALUI_SPRN of CI associated with the selected AOB, and specifies an ALUI search pointer contained in the field ‘ALFI’ by the read number. The location of a lyric unit related with the selected song is found in the file ‘AR_Lyric.ARO’ by location address in the specified pointer. Therefore, lyric text can presented along with reproduced audio data.
  • The disk player may process the read lyric text based on the lyric attribute written in the field ‘L_ATR’ of the current ALUI search pointer. In other words, if the attribute is indicative of a certain language, the disk player converts the lyric text written in the lyric unit to characters of corresponding language font. The lyric attribute field can be allocated in a lyric unit in the file ‘AR_Lyric.ARO’ instead of in the ALFIT, as shown in FIG. 7.
  • Under the condition that RTR_AMG and the lyric file ‘AR_Lyric.ARO’ are constructed as described above, a lyric related with a selected song, namely, audio data is found through the search information in RTR_AMG as follows and then presented along with the selected audio data.
  • FIG. 8 shows a schematic procedure to find an ALU related with a selected song.
  • The controller 14 of the disk device of FIG. 1 searches the ORG_PGC of RTR_AMG for a piece of PGI and/or a piece of CI that is associated with a recorded song selected by a user. If a user selects a program chain including a plurality of recorded songs, the controller 14 searches the ORG_PGI for a piece of PGI and/or CI associated with the first song of them.
  • Further, the controller 14 checks the field ‘C_TY’ in the found CI to know whether the associated audio data have been encoded to special EMD format.
  • If not EMD-formatted, the controller 14 reads the numbers written in AOBI_SRPN and ASVUI_SRPN of CI associated with the selected AOB, namely, song, and reproduces recorded audio data indexed by the number in AOBI_SRPN and still video unit indexed by the number in ASVUI_SRPN. The still video unit is presented in a series of still pictures.
  • At the same time, the controller 14 reads the number written in ALUI_SRPN of that CI, and then specifies an ALUI search pointer contained in the ‘ALFIT’ of RTR_AMG by the read number. The controller 14 examines three fields ‘ALU_SA’, ‘ALU_SZ’, and ‘L_ATR’ included in the specified ALUI search pointer.
  • The location of a lyric unit related with the selected song is found in the file ‘AR_Lyric.ARO’ by the address written in the ‘ALU_SA’. Lyric text is read into the memory 15 from that location as size as the ‘ALU_SZ’ specifies. The read text is processed to an adequate language based on lyric attribute defined by the field ‘L_ATR’. Consequently, the processed lyric is presented onto a screen during playback of the selected audio data.
  • If the lyric attribute is allocated in a lyric unit as shown in FIG. 7, the controller 14 processes the lyric text based on the lyric attribute written therein to present into adequate language.
  • If a plurality of ALUI search pointer numbers have been recorded in a single piece of CI, the controller 14 selects only one ALUI_SRPN among them based on user's selection or selects them sequentially. In latter case, lyric units are sequentially presented in the same sequence that the ALUI search pointer numbers are placed.
  • If the cell type is indicative of EMD format, the controller 14 executes a decoding algorithm suitable for that format to play back the selected song.
  • The type field indicating type of audio data and the number field ‘ALUI_SRPN’ can be allocated in PGI instead of in CI, as shown in FIG. 9, because a piece of PGI is also assigned to a single program, namely, AOB. In this case, type field allocated in PGI is called program type ‘PG_TY’.
  • The above-explained lyric data managing method for a rewritable disk of large storage capacity can accommodate entire lyrics of many small-sized songs recorded on a rewritable disk without any increment of the size of RTR_AMG over a given size limitation. Consequently system requirement of a disk device is alleviated to manage recorded audio data.
  • The detailed description of the invention has been directed to certain exemplary embodiments, various modifications of these embodiments, as well as alternative embodiments, will be suggested to those skilled in the art. The invention encompasses any modifications or alternative embodiments that fall within the scope of the claims.

Claims (14)

1. A method for reproducing a text subtitle stream, the method comprising:
reproducing the text subtitle stream to be presented with main data, the text subtitle stream being separated from the main data; and
presenting a navigation information file including first navigation information for accessing the main data and second navigation information for accessing the text subtitle stream, the navigation information file being separated from the main data and the text subtitle stream,
wherein if the text subtitle stream includes a plurality of individual text sub data units, the second navigation information refers to the plurality of individual text sub data units during a same interval, and
wherein the plurality of individual text sub data units have different language codes.
2. The method of claim 1, wherein the second navigation information includes a start point field indicating a start of reproduction of the text subtitle stream.
3. The method of claim 1, wherein the navigation information file includes a language information field specifying a language code of the text subtitle stream.
4. The method of claim 1, wherein the plurality of text sub data units is preloaded into a memory and one of the plurality of text sub data units is displayed with the main data.
5. The method of claim 4, wherein the plurality of text sub data units is preloaded into a memory before starting presenting with the main data and processed based on attribute information which includes language information regarding a font of the text sub data units.
6. The method of claim 1, wherein the navigation information file includes an index number of the text sub data units.
7. The method of claim 1, wherein the navigation information file includes coding information for the main data and for text data including the text subtitle stream, and the method further comprises processing the text data based on the coding information.
8. An apparatus for reproducing a text subtitle stream, the apparatus comprising:
a pickup configured to reproduce data recorded on a recording medium; and
a controller configured to control the pickup to reproduce the text subtitle stream with main data, the text subtitle stream being separated from the main data, and to present a navigation information file including first navigation information for accessing the main data and second navigation information for accessing the text subtitle stream, the navigation information file being separated from the main data and the text subtitle stream,
wherein if the text subtitle stream includes a plurality of individual text sub data units, the second navigation information refers to the plurality of individual text sub data units during a same interval, and
wherein the plurality of individual text sub data units have different language codes.
9. The apparatus of claim 8, wherein the second navigation information includes a start point field indicating a start of reproduction of the text subtitle stream.
10. The apparatus of claim 8, wherein the navigation information file includes a language information field specifying a language code of the text subtitle stream.
11. The apparatus of claim 8, wherein the controller is configured to control the plurality of text sub data units to be preloaded into a memory and one of the plurality of text sub data units to be displayed with the main data.
12. The apparatus of claim 11, wherein the controller is configured to control the plurality of text sub data units to be preloaded into a memory before starting presenting with the main data and to be processed based on attribute information which includes language information regarding font of the text sub data units.
13. The apparatus of claim 8, wherein the navigation information file includes an index number of the text sub data units.
14. The apparatus of claim 8, wherein the navigation information file includes coding information for the main data and for text data including the text subtitle stream, and the controller is configured to control processing of the text data based on the coding information.
US12/717,878 2001-11-27 2010-03-04 Method of managing lyric data of audio data recorded on a rewritable recording medium Abandoned US20100161092A1 (en)

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US10/305,027 US7715933B2 (en) 2001-11-27 2002-11-27 Method of managing lyric data of audio data recorded on a rewritable recording medium
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