JP4300527B2 - Audio disc and playback device - Google Patents

Description

The present invention relates to an audio disc and a playback device .

A CD (compact disc) is known as a conventional audio reproducing optical disc. A DVD (digital video disk) is known as an optical disk having a higher density than a CD. However, in a DVD (hereinafter referred to as DVD-video), the video signal is recorded as the main and the audio signal is recorded as the slave.
(1) The audio signal is integrated with the video signal, and the recording capacity of the audio signal is small.
(2) The time of the audio signal cannot be managed.
(3) High quality recording and lossless compression recording are not possible.

  Compared with video, audio users have a variety of uses and have a wide user base. Therefore, a simple reproduction method is provided by providing a TOC (table of contents) area like a CD. . However, in the case of DVD-video, a video content block unit is composed of a navigation control pack (CONT pack), a plurality of video (V) packs and an audio (A) pack, and playback of V and A packs is controlled by the CONT pack. To do. For this reason, even if the audio signal is mainly recorded, it cannot be easily reproduced for the user, and there is a problem that the usability is poor.

  In DVD-video, since time management is performed only in units of video frames, even if an audio signal is mainly recorded, the continuity of the audio signal is more important than video, so real-time management is difficult. There is a problem.

  In view of the above problems, the present applicant has disclosed an encoding method for an audio disc that can be easily reproduced and is easy to use for a user when mainly recording an audio signal in accordance with Japanese Patent Application Laid-Open No. 11-185450. The present invention proposes an apparatus and an audio disk encoding apparatus capable of simplifying real-time management when mainly recording audio signals. On the other hand, a recording apparatus for a compressed audio disk capable of recording for a long time in order to newly solve the problem of not supporting compressed audio such as AAC system or AC-3 system that can effectively use the recording capacity of the audio signal Is proposed in Japanese Patent Application Laid-Open No. 2002-358732.

An object of the present invention is to provide an audio disc and a reproducing apparatus that can record both of these encoding methods in a unified manner.
Japanese Patent Laid-Open No. 11-185450 JP 2002-358732 A

With conventional audio discs,
(1) The audio signal is integrated with the video signal, and the recording capacity of the audio signal is small.
(2) The time of the audio signal cannot be managed.
(3) High quality recording and lossless compression recording are not possible.
(4) It does not support compressed audio that further increases the recording time of the audio signal.
(5) Unusable.
It was a problem to solve all of these problems.

  Then, this invention aims at solving said (1)-(5).

Therefore, in order to solve the above problems, the present invention comprises means described in the following 1) and 2) .
That is,
1) A plurality of tracks each including one original music and a bonus music to be selectively played apart from the original music are recorded, and each track is played back on the playback side. When the first control information is compared with data supplied to access the bonus music at the time of playback by the user, and the same data is supplied, the bonus music is played back. First management information (AMG) including interactive data to be allowed is recorded, and the music is based on a linear PCM signal quantized with a sampling frequency and a quantization bit number defined in the DVD audio standard. A first audio zone that is a song or a song with a lossless compressed signal based on the linear PCM signal;
In addition to the first audio zone, there is a second audio zone that is an area for recording music by a compressed signal with a predetermined loss,
Wherein the second audio zone, a plurality of files which the predetermined lossy compressed signal according to a piece of music was stored respectively, and second control information for reproducing the each file in the reproducing side, the Second management information (CAMG) including the same interactive data as the interactive data recorded in one management information (AMG) is recorded, and each song stored in each file is recorded in the first management information (AMG) . In addition to the music corresponding to the music included in any one of the audio zones,
As the files recorded in the second audio zone, a plurality of files in which music corresponding to one track of the first audio zone is individually compressed with a plurality of loss compression methods and a loss compressed signal And the plurality of files have a common file name, and the extensions attached to the file names are different extensions corresponding to the plurality of lossy compression methods, respectively. .
2) A playback device for playing back music recorded on the audio disk according to claim 1 ,
Read means for reading out music by selecting whether to read music recorded in the first audio zone of the audio disk or music recorded in the second audio zone;
When the music read by the reading means is reproduced according to the read first or second control information corresponding to the music, if the music is the bonus music, the bonus music is accessed. Interactive data to be played, and when the interactive data recorded in the first management information (AMG) or the second management information (CAMG) coincides with the input interactive data, the bonus music is reproduced . Reproduction means;
A playback apparatus characterized by comprising:

  According to the audio disc of the present invention, all or part of the music corresponding to the track of the first audio zone is recorded in the second audio zone as a compressed audio file in units of files, so that the transformer can be used immediately. Compressed audio files can be extracted without coding, and this disc can be played back with low power consumption by a portable audio terminal, and portable audio that does not have this disc playback function from a general-purpose playback device (DVD audio player) The effect of being able to copy to the terminal at high speed can be obtained.

  In addition, since each song can be recorded in two or more compression methods for each file, the portable audio terminal can select a compression method that can be decoded and can be immediately played back. Can do.

  Further, in the second audio zone, together with management information (CAMG) and text information for recording all or part of the music corresponding to the track of the first audio zone in units of files and managing the files. Since it is recorded, it can be reproduced together with text information, improving usability.

  According to the reproducing apparatus of the present invention, the music is selected by selecting whether to read the music recorded in the first audio zone or the music recorded in the second audio zone on the audio disc. Can be read.

  Embodiments of the present invention will be described below with reference to the drawings.

Hereinafter, with reference to FIGS. 1 to 65 and 69, the first and second embodiments executed as one embodiment according to the present invention will be described together with some modifications thereof.
In this example, for ease of explanation, the structure of a known DVD (Digital Versatile Disc) format is described as an embodiment of Reference 1 and an embodiment of Reference 2, and thereafter, the first and first embodiments of the present invention are described. An audio disc (DVD-audio), a playback device, a playback method, and a recording method according to the second embodiment will be described.

  The audio disc (DVD-audio) according to the present invention physically includes a printing surface, an upper protective layer, a reflective layer that reflects laser light, a data recording recording layer, and a lower protective layer. The well-known structure which has this is comprised.

[Embodiment of Reference 1]
With reference to FIGS. 1-8, the audio disc which concerns on embodiment of the reference 1 is demonstrated.
1 is an explanatory diagram showing an embodiment of a DVD-video format and a reference example of a DVD-audio format according to the present invention, FIG. 2 is an explanatory diagram showing the audio content block unit of FIG. 1, and FIG. FIG. 4 is an explanatory diagram showing in detail the format of the audio control pack of FIG. 2, and FIG. 5 is an explanatory diagram showing in detail the format of the audio character display (ACD) area of FIG. 6, FIG. 6 is an explanatory diagram showing an example displayed by the name space information of FIG. 5, FIG. 7 is an explanatory diagram showing in detail the format of the audio search data area of FIG. 4, and FIG. 8 is an audio content block unit of FIG. It is explanatory drawing which shows the other structural example.

  FIGS. 1A and 1B show DVD-video and DVD-audio formats, respectively, and the DVD-audio format is compatible with DVD-video although the area names are different. First of all, the DVD-video format is composed of the top video manager (VMG) and the following areas of a plurality of video title sets (VTS), while the DVD-audio format is an audio corresponding to this. Each area includes a manager (AMG) and a plurality of subsequent audio title sets (ATS).

  Each VTS is composed of a leading VTS information (VTSI), followed by one or more video content block sets (VCBS) and a last VTSI, while each ATS corresponds to the leading ATS information (ATSI). ) Followed by one or more audio content block sets (ACBS) and the last ATSI. The performance time of each song in ACBS is set in ATSI in real time.

  Each VCBS is composed of a plurality of VCBs, while each ACBS is composed of a plurality of ACBs. Each VCB corresponds to one video title, and each ACB corresponds to one audio title. Each VCB (one title) is composed of a plurality of chapters, while each ACB (one title) is composed of a plurality of tracks corresponding thereto. Each of the chapter and the track includes a part of title (PTT).

  Each chapter is composed of a plurality of cells (CELL), while each track is composed of a plurality of indexes (Index). Each cell is composed of a plurality of VCB units (VCBU), while each index is composed of a plurality of ACB units (ACBU) corresponding thereto. Each of the VCB unit and the ACB unit is composed of a plurality of packs, and one pack is composed of 2048 bytes.

  Each VCB unit is composed of a head navigation control pack (hereinafter referred to as a CONT pack), followed by a plurality of video (V) packs, audio (A) packs, and sub-picture (SP) packs. Each of them is composed of a leading audio control pack (hereinafter referred to as A-CONT pack), followed by a plurality of A packs and V packs.

  Information for controlling the subsequent V pack is arranged in the CONT pack, and information for managing the audio signal of the subsequent A pack is arranged in the A-CONT pack like the TOC information of the CD. Audio data is arranged in the A pack, and closed caption (CC) data other than the audio data is arranged in the V pack, in addition to the video data.

  As shown in FIG. 2, the VCB unit is composed of an arbitrary number of packs for 0.4 to 1.0 seconds, and the ACB unit is composed of an arbitrary number of packs for 0.5 to 1.0 seconds. Has been. The A-CONT pack in the DVD-audio ACB unit is arranged in the third pack in the DVD-video VCB unit.

  The A-CONT pack is basically arranged in units of 0.5 second of the audio time, and is arranged so as to be completed in the range of 0.5 to 1.0 seconds at the index break. The audio time (GOF: Group of Audio Frame unit) is indicated by an A-CONT pack, and the data position is determined by the number of audio frame numbers, first access unit pointers, and frame headers. Also, the A pack immediately before the A-CONT pack does not force padding in units of 0.5 second of the audio time.

  The adjacent A packs are arranged so that the audio signals are related to each other. For example, in the case of stereo, the L channel pack and the R channel pack are arranged adjacent to each other, and similarly in the case of a multi-channel of 5 channels. Adjacent to each other. The V pack is arranged adjacent to the A pack when video is displayed during reproduction of the audio signal. As shown in FIG. 3, the A pack and the V pack are a 4-byte pack start information and a 6-byte SCR (System Clock Reference) for 2034 bytes of user data (A data and V data). ) Information, 3 bytes Mux rate (multiplex rate: multiplexing rate of program stream) information and 1 byte of stuffing in total 14 bytes are added (1 pack = total of 2048 bytes). In this case, the time of the A pack in the same title can be managed by setting the SCR information as a time stamp as “1” in the first pack in the ACB unit and continuing in the same title.

  On the other hand, as shown in FIG. 4, the A-CONT pack has a 14-byte pack header, a 24-byte system header, a 1003-byte ACD (audio character display) packet, and a 1007-byte ASD (audio search data). ) Consists of packets. The ACD packet has a 6-byte packet header, a 1-byte substream ID, 636-byte ACD (audio character display) information as shown in detail in FIG. 5, and a 360-byte reserved area (reserved). May be indicated). The ASD packet is similarly composed of a 6-byte packet header, a 1-byte substream ID, and a 1000-byte ASD (audio search data) as shown in detail in FIG.

  As shown in detail in FIG. 5, the 636-byte ACD information area has a 48-byte general information area and a 294-byte area for each of the first language character “1” and the second language character “2”. Each area is composed of a 93-byte name space area, two 93-byte free space areas, and a 15-byte data pointer area. In one name space area of the first language character “1” and the second language character “2”, for example, data (audio text data) for displaying the music title in Japanese as shown in FIG. Is arranged, and data (audio text data) to be displayed in English is arranged in the other namespace area. The display language may be determined by the disc publisher.

  The 48-byte general information includes, for example, 16-byte service level information, 12-byte language code information, 6-byte character set code information, 6-byte display item information, and 2-byte “previous ACD information”. Difference information and 6-byte hold information. The 16-byte service level information indicates the display size, display type, audio / video / SP distinction, stream, etc., and the character is mandatory (required) and the bitmap is optional (optional). The 12-byte language code information indicates the language of the characters “1” and “2” by 2 bytes, as in the video file, and indicates a maximum of 8 languages in one file. English is mandatory.

The 6-byte character set code information can have a maximum of 15 character codes corresponding to language codes, and indicates the presence / absence and type of characters “1” and “2” in 1 byte. A code example is shown below.
1. ISO646
2. ISO8859-1
3. MS-JIS
The 6-byte display item information indicates the free spaces “1” and “2” shown in FIG. The name space is mandatory, and the title name, music name, and artist name must be written.

  As shown in detail in FIG. 7, 1000-byte ASD (audio search data) includes 16-byte general information, 8-byte current number information, 16-byte current time information, and 8-byte title set search information. 8 bytes of title search information, 404 bytes of track search information, 408 bytes of index search information, 80 bytes of highlight search information, and 52 bytes of reserved area.

  The current number information of 8 bytes includes the current title number of the title set (2 bytes: BCD), the current track number of the title set (2 bytes: BCD), and the current index number of the track (2 bytes: BCD). ) And a reserved area (2 bytes). The current time information of 16 bytes includes the track playback time (4 bytes: BCD), the remaining playback time of the track (4 bytes: BCD), the absolute time of the title (4 bytes: BCD), and the remaining title. The absolute time (4 bytes: BCD).

  The 8-byte title set search information is composed of the first sector number (4 bytes) of the title set and the last sector number (4 bytes) of the title set. The 8-byte title search information is composed of the first sector number (4 bytes) of the title and the last sector number (4 bytes) of the title. The 404-byte track search information includes a title track and sector number (4 bytes × 99), a title first track number (4 bytes), and a title last track number (4 bytes).

  The 408-byte index search information includes a track index and sector number (4 bytes × 100), a track first index number (4 bytes), and a track last index number (4 bytes). The 80-byte highlight search information includes a track in-sector number (4 bytes × 10) and a track out-sector number (4 bytes × 10).

  According to such a format, since the A-CONT pack for managing the audio signal of the subsequent A pack such as the TOC information of the CD is arranged at the head of the plurality of A packs, the audio data is the video data. The recording capacity can be increased. Also, the audio time can be managed by the A-CONT pack, and simple character information such as a song name related to the audio data can be extracted by the A-CONT pack.

  Further, since TOC information such as title, start address, performance time, etc. is arranged in the A-CONT pack, information corresponding to the user's operation is taken out from the A-CONT pack and playback is started even during audio playback. be able to. Also, by arranging the TOC information in the audio manager information (AMGI) and the audio title set information (ATSI), the necessary TOC information is stored in the memory in the player, and information corresponding to the user's operation is stored in the memory. Can be read immediately and playback can be started. Further, since it is not necessary to store a large amount of information such as program chain information (PGCI) in DVD-video, the disk can be managed efficiently.

further,
1. If there is no image (V) data in the content,
(1) Search and random access to the three levels of title, movement, and index are possible.
(2) Finding of GOF (audio frame) units, time search, and random access are possible.
(3) The title, movement, and index times can be managed in real time.

Also,
2. If there is image (V) data in the content,
Regarding audio data, in addition to (1) to (3) above,
(4) The title, the current time in the movement, and the remaining time can be displayed and managed in real time. For video data,
(1) Search and random access to the three layers of title, PTT, and cell are possible.
(2) Cueing in units of video frames, time search, and random access are possible.
(3) The title, PTT, and cell time can be managed in real time.
(4) Current time and remaining time in PTT or title can be displayed and managed in video frame unit time.

  The ACBU in FIG. 1B includes A-CONT and CONT, but may be configured not to include the V pack and CONT as shown in FIG. In this case, the video signal is not recorded, but the recording capacity of the audio signal is increased, the disc size can be reduced, and the playback function can be simplified, so that a device suitable for a portable playback device can be provided. .

[Embodiment of Reference 2]
Next, an audio disc according to the embodiment of Reference 2 will be described with reference to FIGS.

  9 shows ACBU and VCBU of the embodiment of Reference 2, FIG. 10 shows another example of ACD (Audio Character Display) information of Embodiment of Reference 2, and FIG. 11 shows ASD (Audio Audio) of Embodiment of Reference 2. 12 shows the CONT pack of FIG. 9 in detail, FIG. 13 shows the PCI data of FIG. 12 in detail, FIG. 14 shows the PCI general information of FIG. 13 in detail, and FIG. 15 shows the recording of FIG. FIG. 16 shows the DSI of FIG. 12 in detail, FIG. 17 shows the DSI general information of FIG. 16 in detail, FIG. 18 shows the seamless playback information of FIG. 16 in detail, and FIG. 19 shows the seamless use of FIG. FIG. 20 shows an example of the VOBU search information shown in FIG. 16, and FIG. 21 shows the VOBU search information shown in FIG. Particularly shown, FIG. 22 shows in detail the synchronization information in FIG. 16. FIG. 23 shows the configuration of the lead-in area of the first and second embodiments, FIG. 24 shows the control data block of FIG. 23 in detail, and FIG. 25 shows the physical format information of FIG. 24 in detail. Yes.

  Incidentally, in the embodiment of Reference 1, the audio player uses ASD (audio search data) in the A-CONT pack shown in detail in FIG. 7 in order to control playback of the A pack, and at this time, seamless playback is performed. Sometimes it is based on the current number and the current time, and when performing jump playback, it is based on search information for title set search, title search, track search, index search, and highlight search.

  On the other hand, the basic format of the audio disc of the embodiment of the reference 2 is based on the DVD video standard shown in FIG. 1A so that it can be played back using a DVD video disc player. As shown in FIG. 9, the VCB unit (VCBU) does not include an A-CONT pack, and includes a leading CONT pack, a relatively large number of A packs, and a relatively small number of V packs. The ACBU is composed of an arbitrary number of packs for 0.4 to 1.0 seconds at the same interval as the VCBU with the first A pack after the V pack as the head. Here, VCBU is also called VOBU in the DVD video standard.

  Since ACBU does not include the A-CONT pack, the ACD packet and ASD packet included in the A-CONT pack in the embodiment of Reference 1 are the VMG (video manager) and VTS (shown in FIG. Video title set) or both. Alternatively, as indicated by a broken line in FIG. 1A, they are added corresponding to VMG and VTS and arranged in both the AMG and ATS provided side by side. These AMG and ATS have the same functions as the AMG and ATS shown in FIG.

  Here, since the ACD packet of the embodiment of Reference 1 is provided in an A-CONT pack provided for each ACB unit (every 0.5 to 1.0 seconds), data for a large number of screens is stored. Although it can be accommodated, in the embodiment of Reference 2, since it is accommodated in VMG (video manager) or VTS (video title set), the amount of data accommodated is limited, so only the title name for each song or each movement, etc. It is accommodated with a relatively small amount of data. In addition, the audio reproduction control information described in detail below may be accommodated in about one type.

  Further, the ACD area in the ACD packet is configured to have the data of the character “1” of the first language and the character “2” of the second language as in the embodiment of the reference 1 (FIG. 5). Alternatively, as shown in FIG. 10, the data related to the character “2” is omitted, and a 48-byte general information area and a so-called “audio navigation” such as a song name as shown in FIG. 6 are displayed. For example, a 294-byte area and a 294-byte audio reproduction control information area related to the character “1” in one language. The area of the character “1” is composed of a name space area of 93 bytes, two free space areas of 93 bytes each, and a data pointer area of 15 bytes as in the first embodiment.

  The content of the audio playback control information area is arbitrary, and is composed of, for example, 10 types of audio playback control information areas (250 bytes) each having 25 bytes and a 44-byte reserved area. These pieces of audio playback control information are used when the user plays back a song arranged in the A pack, for example, depending on the genre (classic, jazz, rock, BGM) of the song, This data is recommended by a so-called professional mixer so that the sound quality during reproduction is best according to the performance state, recording state, atmosphere, etc. of the music. In the reserved area, when the number of audio signal channels is 6, mixing coefficients are stored so that the number of channels can be reduced to 2 and stereo reproduction can be performed.

  Further, since the CONT pack is used when seamlessly reproducing the A pack, the ASD omits the 8-byte current number information and the 16-byte current time information in the embodiment of Reference 1 (FIG. 7) as shown in FIG. This amount is used as a reserved area (76 bytes). For this reason, detailed display and playback control cannot be performed as in the embodiment of Reference 1, but since the DVD video disc player can play back, only the DVD audio disc player can be played back as in Embodiment 1, and the DVD video disc player can be played back. Therefore, it is possible to realize an audio disc that is effective in a transition period until a disc that cannot be reproduced becomes widespread.

  Next, the configuration of the CONT pack will be described in detail with reference to FIG. This CONT pack is called a navigation pack, commonly known as a navigation (NV) pack in the DVD video standard. It is a 14-byte pack header, a 24-byte system header, a PCI (Presentation Control Information) packet, and a DSI (DSI). Data search information) packet. PCI is called reproduction control information. This PCI packet is composed of a 6-byte packet header, a 1-byte substream ID, and 979-byte PCI data shown in detail in FIG. 13 (total of 986 bytes). The DSI packet is composed of a 6-byte packet header, a 1-byte substream ID, and DSI data shown in detail in FIG. 16 (total of 1024 bytes).

  PCI data is navigation data for controlling the playback of VOBU. As shown in detail in FIG. 13, PCI general information (PCI GI) of 60 bytes, non-seamless angle information (NSML AGLI) of 36 bytes, and 694 bytes. 4 highlight information (HLI) and 189-byte recording information (RECI).

PCI general information is shown in detail in FIG.
4 bytes of “NBN of NV pack (= CONT pack)” (NV PCK LBN),
-2-byte "VOBU category" (VOBU CAT),
-A 2-byte reserved area,
4 bytes of “VOBU user operation control information” (VOBU UOP CTL),
-4-byte "VOBU start PTM" (VOBU S PTM),
4 bytes of “VOBU end PTM” (VOBU E PTM),
-4 bytes "End of PTM within VOBU PTM" (VOBU SES PTM),
It consists of a 4-byte “Elapsed In-Cell” (C ELTM) and a 32-byte reserved area.

  In “NV pack LBN” (NV PCK LBN), the address of the NV pack including this PCI is described in RLBN from the first LB of the VOBS including this PCI, and “VOBU category” (VOBU) CAT) describes the state of the analog protection system (APS) of this VOBU.

  The non-seamless angle information (NSML AGLI) shown in FIG. 13 is information related to the destination address at the time of angle change, and when the angle cell change is changed non-seamlessly, that is, the seamless angle change flag is “ Valid only when it is set to “non-seamless”. The highlight information (HLI) shown in FIG. 13 is information for highlighting one rectangular area in the sub-picture display area, and based on this information, the mixing ratio (contrast of video and sub-picture colors in the specific rectangular area is shown. ) Can be changed. Further, the reproduction period of the sub-picture unit (SPU) of each sub-picture stream is the same as the validity period of the highlight information (HLI).

The recording information (RECI) shown in FIG. 13 is detailed as shown in FIG.
10 bytes of “ISRC of video data in video stream” (ISRCV);
10 bytes of “ISRC of audio data in decoding audio stream # 0” (ISRC A0);
10 bytes of “ISRC of audio data in decoding audio stream # 1” (ISRC A1);
10 bytes of “ISRC of audio data in decoding audio stream # 2” (ISRC A2);
10 bytes of “ISRC of audio data in decoding audio stream # 3” (ISRC A3);
10 bytes of “ISRC of audio data in decoding audio stream # 4” (ISRC A4);
10 bytes of “ISRC of audio data in decoding audio stream # 5” (ISRC A5);
10 bytes of “ISRC of audio data in decoding audio stream # 6” (ISRC A6);
10 bytes of “ISRC of audio data in decoding audio stream # 7” (ISRC A7);
-10 bytes of "Decoding-ISRC of SP data # 0, # 8, # 16 or # 24 SP data" (ISRC SP0),
-10 bytes of "Decoding-ISRC of SP data # 1, # 9, # 17 or # 25 SP data" (ISRC SP1),
-10 bytes of "Decoding-ISRC of SP data # 2, # 10, # 18 or # 26 SP data" (ISRC SP2),
-10-byte "decoding-ISRC of SP data # 3, # 11, # 19 or # 27 SP data" (ISRC SP3),
-10 bytes of "Decoding-SPRC ISRC # 4, # 12, # 20 or # 28 SPRC ISRC" (ISRC SP4);
-10 bytes of "Decoding-SPRC ISRC # 5, # 13, # 21 or # 29 SPRC ISRC" (ISRC SP5);
-10 bytes of "Decoding-SPRC ISRC for SP stream # 6, # 14, # 22 or # 30" (ISRC SP6),
-10 bytes of "Decoding-ISRC of SP data # 7, # 15, # 23 or # 31 SP data" (ISRC SP7),
1 byte “Group of SP streams selected for ISRC” (ISRCCSP SEL);
-It consists of an 18-byte reserved area.

The data search information (DSI) shown in FIG. 12 is navigation data for searching for data and executing VOBU seamless playback. As shown in detail in FIG. 16, 32-byte DSI general information (DSI GI) )When,
148 bytes of seamless playback information (SML PBI),
54-byte seamless angle information (SML AGLI),
-168-byte VOBU search information (VOBU SRI);
144 bytes of synchronization information (SYNCI),
-It consists of a 471-byte reserved area.

As shown in detail in FIG. 17, the DSI general information (DSI GI) is a 4-byte “NV PCK SCR base” (NV PCK SCR),
4 bytes of “NV PCK LBN” (NV PCK LBN),
4 bytes of “VOBU end address” (VOBU EA),
4-byte “end address of first reference picture of VOBU” (VOBU 1STREF EA);
4 bytes of “end address of the second reference picture of VOBU” (VOBU 2NDREF EA),
4 bytes of “end address of the third reference picture of VOBU” (VOBU 3RDREF EA),
-2 bytes "VOBU ID number of VOBU" (VOBU VOB IDN),
A 1-byte reserved area;
1-byte “VOBU cell ID number” (VOBU C IDN);
Consists of a 4-byte “cell elapsed time” (C ELTM).

The seamless playback information (SML PBI) shown in FIG. 16 includes a 2-byte “seamless VOBU category” (VOBU SML CAT), as shown in detail in FIG.
4 bytes of “interleaved unit end address” (ILVU EA),
4 bytes of “Start Address of Next Interleaved Unit” (NXT ILVU SA);
2 bytes of “Next interleaved unit size” (NXT ILVUSZ),
4 bytes of “Start PTM of video in VOB” (VOB V S PTM);
4 bytes of “End of video PTM in VOB” (VOB V E PTM),
8 bytes x 8 "End of audio PTM in VOB" (VOB A STPPTM),
-8 bytes x 8 "Audio gap length in VOB" (VOB A GAPLEN).

  The seamless angle information shown in FIG. 16 is information related to the destination address when the angle is changed as shown in FIG. 19, and when the angle change is executed seamlessly, that is, the seamless angle change flag is set to “seamless”. It is valid only if

In the VOBU search information (VOBU SRI) shown in FIG. 16, in this cell, as shown in FIG. 20, the head of the VOBU played back at 0.5 × n seconds before and after the playback start time of the VOBU containing this DSI. An address is described and is valid only within one cell. This information is detailed in FIG.
4-byte “next VOBU head address of video data” (FWDI VIDEO),
4 bytes of “+240 VOBU start address and video presence flag” (FWDI 240),
4 bytes of “+120 VOBU start address and video presence flag” (FWDI120),
4 bytes of “+60 VOBU start address and video presence flag” (FWDI60),
4 bytes of “+20 VOBU start address and video presence flag” (FWDI20),
4 bytes of “+15 VOBU start address and video presence flag” (FWDI15),
4 bytes of “+14 VOBU start address and video presence flag” (FWDI14),
4 bytes of “+13 VOBU start address and video presence flag” (FWDI13),
4 bytes of “+12 VOBU start address and video presence flag” (FWDI12),
4 bytes of “+11 VOBU start address and video presence flag” (FWDI11),
4 bytes of “+10 VOBU start address and video presence flag” (FWDI10),
4 bytes of “+9 VOBU start address and video presence flag” (FWDI 9),
4 bytes of “+8 VOBU start address and video presence flag” (FWDI 8),
4 bytes of “+7 VOBU start address and video presence flag” (FWDI 7),
4 bytes of “+6 VOBU start address and video presence flag” (FWDI 6),
4 bytes of “+5 VOBU start address and video presence flag” (FWDI 5),
4 bytes of “+4 VOBU start address and video presence flag” (FWDI 4),
4 bytes of “+3 VOBU start address and video presence flag” (FWDI 3),
4 bytes of “+2 VOBU start address and video presence flag” (FWDI 2),
4 bytes of “+1 VOBU start address and video presence flag” (FWDI 1),
4 bytes of “next VOBU head address and video presence flag” (FWDI Next),
4 bytes of “Previous VOBU start address and video presence flag” (BWDI Prev),
4 bytes of “−1 VOBU start address and video presence flag” (BWDI 1),
4 bytes of “-2 VOBU start address and video presence flag” (BWDI 2),
4 bytes of “−3 VOBU start address and video presence flag” (BWDI 3),
4 bytes of “−4 VOBU start address and video presence flag” (BWDI 4),
4 bytes of “−5 VOBU start address and video presence flag” (BWDI 5),
4 bytes of “−6 VOBU start address and video presence flag” (BWDI 6),
4 bytes of “−7 VOBU start address and video presence flag” (BWDI 7),
4 bytes of “−8 VOBU start address and video presence flag” (BWDI 8),
4 bytes of “−9 VOBU start address and video presence flag” (BWDI 9),
4 bytes of “−10 VOBU start address and video presence flag” (BWDI10),
4 bytes of “-11 VOBU start address and video presence flag” (BWDI11),
4 bytes of “−12 VOBU start address and video presence flag” (BWDI12),
4 bytes of “−13VOBU start address and video presence flag” (BWDI13),
-4-byte "-14 VOBU start address and video presence flag" (BWDI14),
4 bytes of “−15 VOBU start address and video presence flag” (BWDI15),
4 bytes of “−20 VOBU start address and video presence flag” (BWDI20),
4 bytes of “−60 VOBU start address and video presence flag” (BWDI60),
4 bytes of “−120VOBU start address and video presence flag” (BWDI120),
4 bytes of “−240 VOBU start address and video presence flag” (BWDI 240),
-It is composed of 4-byte "start address of VOBU before having video data" (BWVIDEO).

The synchronization information (SYNCI) shown in FIG. 16 is address information of audio data and sub-picture data reproduced in synchronization with the video data of the VOBU including this DSI. As shown in detail in FIG. X8 "Target Audio Pack (A PCK) Address" (ASYNCA 0 to 7) and 4 bytes x32 "VOBU Start Address for Target Sub-Picture Pack (SP PCK)" (SP SYNCA 0 to 31) It is comprised by.

[First and second embodiments]
(Audio disc identifier)
Disc identifiers applicable to the audio discs (DVD-audio) according to the first and second embodiments will be described based on the DVD format of the first and second embodiments described above. As shown in FIG. 23, the DVD recording area is roughly composed of a lead-in area and a data area. In addition, the lead-in area of the DVD is an all 00h block from the start of the lead-in to the sector number “02F000h”.
A reference code block for two blocks from the sector number “02F000h” to the sector number “02F020h”;
All 30h blocks from the sector number “02F020h” to the sector number “02F200h” before the sector number “02F020h”;
A control data block of 192 blocks from sector number “02F200h” to sector number “02FE00h”;
It is composed of 32 blocks of all 00h blocks from the sector number “02FE00h” to the sector number “030000h”.

  In addition, ISO 9660 and micro UDF (Universal Disc Format) data are recorded from the head of the data area (sector number “030000h”), followed by audio title set (TS), video TS, computer TS, etc. The

  As shown in FIG. 24, the control data block in the lead-in area is composed of a sector for physical format information, a sector for disc manufacturing information, and a sector for copyright information. As shown in FIG. 25, the physical format information sector includes a book type and part version area, a disk size and minimum lead-out area, a disk structure area, a recording density area, and data. It consists of area allocation areas.

And the book type and part version areas are assigned as disc identifiers, and their upper bits
・ "DVD-ROM disk" or
"DVD-RAM disk" or "DVD-Write Once disk" is indicated, and in the case of "DVD-ROM disk", the lower bit indicates "computer program disk"
・ "Pure video disk"
An identifier indicating whether “video + audio navigation disc: Van-disc”, “audio disc”, or “audio disc type 2” is described.

  The “type 2” of the “audio disc type 2” described above indicates that the audio disc to be identified is manufactured by applying the concept of the audio disc according to the present invention.

  Therefore, according to the book type and part version, a disc identifier indicating “DVD-ROM-audio disc” is described in the disc according to the embodiment of Reference 1, and “DVD” is indicated in the disc according to the embodiment of Reference 2. A disk identifier indicating "-ROM-Van-disk" is described. The lead-in area of “DVD-ROM-pure video disc” is not provided with TOC information such as information on the beginning of a song or movement, but “DVD-ROM-audio disc” in the embodiment of Reference 1. The TOC information is provided in the lead-in area of the “DVD-ROM-Van-disc” in the embodiment of Reference 2.

  Therefore, according to the embodiment of Reference 2, since the number of A packs in the VOB unit is larger than that of the V pack, when the V pack is reproduced on the display, a still image or a moving image with less motion is obtained. Since the A pack can be reproduced based on the CONT pack (NV pack) of the DVD video standard, the DVD video player can reproduce it.

  By the way, it is convenient to record audio data in the three layers of title, track, and index for searching, or to enable random access, but there is a problem that TOC information becomes complicated. In addition, when performing simple reproduction using the TOC information, there is a problem that the reproduction cannot be performed unless the sampling frequency of the audio data can be specified. When TOC information is recorded in the lead-in area used in a DVD video disc, the TOC information is also difficult to spread unless consideration is given to compatibility with DVD video and convenience of its own accessibility. Occurs.

  Therefore, data can be efficiently managed by arranging TOC information in track units in order of title. Also, by storing the sampling frequency and the number of quantization bits of audio data for each track in this TOC information, it is possible to immediately shift to playback when performing simple playback using the TOC information. Further, the TOC information is also recorded in a free area (reserved area) of copyright information of the control data block in the lead-in area adopted for the DVD video disk.

  Also, as shown in FIG. 24, the sector numbers “2” to “15” of the control data block in the lead-in area of the DVD are reserved for copyright information. As an example, the reserved area ( TOC information is arranged in the sector numbers “8” to “15”).

FIG. 26 shows a specific example of this TOC information. This TOC information is called SAPP (Simple Audio Play Pointer)
16-byte simple audio play pointer table information (SAPPTI),
Each is composed of n simple audio play pointers # 1 to #n (SAPP # 1 to #n) of 48 bytes. SAPPTI is a 12-byte SAPPTI identifier, a 2-byte SAPP number, and 2 bytes. The SAPPTI end address.

SAPP # 1 to #n are each composed of 48 bytes and are provided corresponding to each group # 1 to #n, and the breakdown is as shown in FIG.
-1-byte SAPP title number and
-1-byte SAPP track number,
A 4-byte start presentation time of the first cell of the track pointed to by SAPP;
4 bytes of the playback time of the track pointed to by SAPP;
-4 bytes of the pause time of the track pointed to by SAPP;
As shown in detail in FIG. 28, the 4-byte attribute of the track pointed to by SAPP (SAPP-ATR),
・ 18-byte reserved area,
A 4-byte start address of the track pointed to by SAPP;
A 4-byte start address of the first cell of the track pointed to by SAPP;
• It is composed of a 4-byte end address of the track pointed to by SAPP.

Also, as the track attribute (SAPP-ATR) of the above 4 bytes (32 bits b31 to b0), as shown in FIG. 28, audio coding AC is 1 bit (b28),
However, 0b: linear PCM audio 1b: recorded with lossless compressed audio, and the quantization bit number Q is 4 bits (b23 to b20),
However, 0000b: 16 bits 0001b: 20 bits 0010b: 24 bits Others: Recorded on hold, sampling frequency fs is 4 bits (b15 to b12),
However, 0000b: 48 kHz
0001b: 96 kHz
0010b: 192 kHz
1000b: 44.1 kHz
1001b: 88.2 kHz
1010b: 176.4 kHz
Other: Record on hold, and record the decoding audio stream number in 3 bits (b7 to b5). The SAPP information is further divided into n tracks (movements / music) and recorded together with album numbers belonging to the tracks.

(Copy restriction)
When the pack shown in FIG. 3 is an audio pack (A pack), management information relating to restrictions on the user's copying of audio data is stored in the user data area. This copy restriction management information includes DVD audio (that is, PCM audio data or lossless compressed audio data) and DVD audio type 2 audio data excluding PCM audio data or lossless compressed audio data (that is, compressed audio data (described later)). Same for CA-D) or lossy compressed audio data). However, as will be described later, the compressed audio data is recorded not as an audio pack (A pack) but as an elementary stream, and “audio copy permission” and “audio” of copy control information provided in the compressed audio file information (CAFI). The number of copies allowed to the user is managed by “copy number”.

  In the user data area of the audio pack shown in FIG. 3, a packet header (9 to 17 bytes), a private header (14 to 21 bytes), and audio data (1 to 2011 bytes) are arranged from the beginning. The private header and audio data constitute a packet. Management information relating to copy restrictions is arranged in such a private header, and this management information defines the number of copies permitted to the user.

  Specifically, in this management information, when “audio_copy_permission” = 00b, copying is possible without restriction, and when audio_copy_permission ”= 10b, copying is defined by the number of times per recording device by“ audio_copy_number ”. That is, when “audio_copy_number” = 000b, audio data present in the audio packet is permitted only once, and when audio_copy_number ”= 001b, audio data present in the audio packet is permitted only twice, and audio_copy_number” = In the case of 010b, the audio data present in the audio packet is permitted only four times, in the case of audio_copy_number "= 011b, the audio data present in the audio packet is permitted only six times, and in the case of audio_copy_number" = 100b, it is present in the audio packet. Audio data is allowed only 8 times Further, if the audio_copy_number "= 101b, audio data located in the audio packet is allowed only 10. All the audio packets in the program PG of one song are all set to the same number of permitted copies. As a result, the number of copies permitted to the user is managed.

(Audio disc according to the first embodiment)
Next, the audio disc according to the first embodiment will be further described with reference to FIGS.

  FIG. 29 shows a disc DVD-ROM-audio disc type 2 according to the first embodiment. This format is roughly a video title set-directory (VTS-D) as DVD-video data and an audio title as DVD-audio data. A set-directory (ATS-D) and a compressed audio-directory (CA-D) as compressed audio data are configured. More specifically, the VTS includes a video manager (VMG) shown in FIG. 1A, a video and audio video manager menu (VMGM), and a VTS <1> managed by the VMGI in the VMG. .

  On the other hand, the ATS is paired with the audio data in the VTS <1> on the VTS side, ie, the audio manager (AMG) shown in FIG. The ATS <1> managed by the AMGI in the AMG and the ATS <2> managed by the AMGI in the AMG are not paired with the VTS side. Further, as shown in FIG. 30, the ATS <2> does not include the A-CONT pack, and is configured only by the A pack. Note that the video title set-directory (VTS-D) may be omitted, and only the audio title set-directory (ATS-D) and the compressed audio-directory (CA-D) may be used (this is the second one). This will be described later as an embodiment). The audio title set-directory (ATS-D) may be provided with an SPS (still picture set) including still image data, which will be described in the second embodiment.

  The lead-in area in the disc of the first embodiment is the implementation of Reference 2 except that the disc identifier indicating “DVD-ROM-audio disc type 2” is described by the book type and part version shown in FIG. The form is the same. Therefore, this disc cannot be played back by a DVD video player and can be played back by a dedicated player. However, since the TOC information is recorded, simple playback can be performed. Similarly to the embodiment of Reference 2, TOC information is arranged and arranged in units of tracks in the order of titles, so that data can be efficiently managed. Furthermore, audio data of each track is included in the TOC information. By storing the sampling frequency and the number of quantization bits, it is possible to immediately shift to playback when performing simple playback using TOC information. In this embodiment, the TOC information is recorded as a file, as in the case of SAMG in FIG. The compressed audio (CA) is composed of CAMG and audio data corresponding to audio data of ATS <1> and ATS <2>. Details of the compressed audio will be described later. It is not limited to arranging compressed audio data corresponding to all ATS audio data, such as omitting audio data corresponding to ATS <1> audio data. The video title set-directory (VTS-D) and the audio title set-directory (ATS-D) constitute a first audio zone, and the compressed audio-directory (CA-D) constitutes a second audio zone. To do.

(Audio disc according to the second embodiment)
An audio disc according to a second embodiment of an information recording medium to which the present invention is applied will be described with reference to FIGS.

  In the DVD-audio disc format shown in FIG. 32, SMG (Structure of Simple Audio Manager) and AMG (Audio) are placed under ATS-D (Audio Title Set-Directory). Manager, SPS (Still Picture Set), and a plurality (m) of ATS <1> to ATS <m> managed by AMGI in AMG, where SMG is ATS <1> to ATS. This is an area where the SAPP table (TOC) for cueing <m> is repeatedly described 8 times, and this area can be defined as one independent file.

  AMG includes AMG information (AMGI), AMG menu (AMGM) and backup AMGI (AMGI-BUP), and AMGI (and AMGI-BUP) includes an AMGI management table (AMGI-MAT) shown in detail in FIG. The AMGI-MAT includes interactive data (password) for accessing bonus information, and this password is represented by, for example, a 4-digit number or code. For example, when the password is 0000, it indicates that bonus information is not provided, and when the password is not 0000, it indicates that bonus information is provided and indicates an actual password. SPS (still picture set) includes still image data.

  ATS <1> to ATS <m> are audio data of normal music (hereinafter referred to as non-bonus music), karaoke music as bonus music, audio data such as BGM, etc., other than audio data, for example, super captions of karaoke, Includes MIDI code and quiz data. The configuration of this ATS is free to the disc producer, and the non-bonus music and bonus music are arranged in an arbitrary ATS.

As shown in detail in FIG.
・ Audio Manager Information Management Table (AMGI-MAT),
Audio title search pointer table (ATT-SRPT),
-Audio only title search pointer table (AOTT-SRPT),
Audio manager menu PGCI unit table (AMGM-PGCI-UT),
-Audio text data manager (ATXTDT-MG).

AOTT-SRPT is
Audio only title search pointer table information (AOTT-SRPTI),
A plurality of audio-only title search pointers (AOTT-SRPs); AOTT-SRPTI is composed of 4 bytes as shown in detail in FIG.
The number of 2-byte audio-only title search pointers (AOTT-SRP-Ns);
It has a 2-byte audio-only title search pointer table end address (AOTT-SRPT-EA).

Each of the plurality of AOTT-SRPs shown in FIG. 33 is composed of 12 bytes as shown in detail in FIG.
1-byte audio title category (ATT-CAT),
-1-byte number of programs in AOTT (AOTT-PG-Ns),
4 bytes of AOTT total playback time (AOTT-PB-TM),
A 1-byte ATS number (ATSN);
1-byte ATS title number (ATS-TTN),
It has a 4-byte ATS start address (ATS-SA).

The audio title category (ATT-CAT) is shown in detail in FIG.
1 bit (b7) AOTT presence / absence area,
A 3-bit (b6-b4) reserved area;
It has a 4-bit (b3 to b0) AOTT group number (AOTT-GRN) to which this AOTT belongs.
However, AOTT presence / absence bit b7 = 0b: No AOTT = 1b: AOTT present The 4-byte AOTT total playback time (AOTT-PB-TM) shown in FIG. ) Is represented by 1/90000 (second) per bit.

Each of ATS <1> to ATS <m> shown in FIG. 32, as shown in detail in FIG. 37, in order from the top, ATSI (ATS information),
• Audio-only title audio object set (AOTT-AOBS) shown in detail in FIG.
-Consists of backup ATSI. ATSI is in order from the beginning: ATSI-MAT (ATSI management table),
It is composed of ATS-PGCIT (ATS program chain information table) shown in detail in FIGS.

  As shown in detail in FIG. 7, the AOTT-AOBS is composed of a plurality of audio objects for audio only titles (AOTT-AOB). Each of AOTT-AOB is composed of a plurality of programs (PG), and each of the programs is composed of a plurality of cells (ATS-C). The AOTT-AOB includes only audio data as shown in detail in FIG. 38 (1) and AOTT-AOB includes audio data and real time information data (RTI data) as shown in detail in FIG. 38 (2). It is composed of two types of AOTT-AOB. One or more types of AOTT-AOB are arranged in one disc or one song.

  Each program of the first AOTT-AOB including only audio data is composed of a plurality of audio cells (ATS-C), and this audio cell is composed of only a plurality of audio packs. Each program of the second AOTT-AOB including the audio data and the RTI data is composed of a plurality of audio cells (ATS-C), and the audio cell includes the RTI pack arranged at the second pack position and other packs. The audio pack is arranged at the position.

The ATS-PGCIT (ATS program chain information table) shown in FIG. 37 is, in order from the top as shown in FIG. 39, audio title set PGCI table information (ATS-PGCITI),
N audio title sets PGCI search pointers (ATS-PGCI-SRP # 1 to #n),
A plurality of ATS-PGCIs shown in detail in FIG.

As shown in FIG. 40, each ATS-PGCI is
ATS-PGC general information (ATS-PGC-GI) shown in detail in FIG.
ATS program information table (ATS-PGIT) shown in detail in FIGS.
It is composed of an ATS cell playback information table (ATS-C-PBIT).

As shown in FIG. 41, the ATS-PGC-GI is composed of 16 bytes (RBP 0 to 15), and from the top, 4 bytes (RBP 0 to 3) of ATS-PGC contents (ATS-PGC-CNT),
4 bytes (RBP4-7) ATS-PGC playback time (ATS-PGC-PB-TM),
A 2-byte (RBP8, 9) reserved area;
-ATS-PGIT start address of 2 bytes (RBP10, 11),
A 2-byte (RBP12, 13) ATS-C-PBIT start address;
-It consists of a reserved area of 2 bytes (RBP14, 15).

The ATS program information table (ATS-PGIT) shown in FIG. 40 includes n ATS program information (ATS-PGI) # 1 to #n as shown in detail in FIG. Each of ATS-PGI # 1 to #n is composed of 20 bytes (RBP0 to 19), as shown in detail in FIG. 43, and from the top, 4 bytes (RBP0 to 3) of ATS-PG contents (ATS-PG) -CNT)
1 byte (RBP4) ATS-PG entry cell number,
-1 byte (RBP5) reserved area;
4 bytes (RBP 6-9) of ATS-PG first audio cell start presentation time (FAC-S-PTM),
4 bytes (RBP 10-13) of ATS-PG playback time,
4 bytes (RBP 14-17) ATS-PG pause time,
1 byte (RBP18) reserved area (for copyright management data CMI),
It is composed of a 1-byte (RBP19) reserved area.

The ATS cell playback information table (ATS-C-PBIT) shown in FIG. 40 includes n ATS cell playback information (ATS-C-PBI) # 1 to 1 as shown in detail in FIG. #N. Each of the ATS-C-PBIs # 1 to #n is composed of 12 bytes (RBP0 to 11) as shown in detail in FIG. 45, and from the top of the ATS-C index number of 1 byte (RBP0),
1-byte (RBP1) ATS-C type (ATS-C-TY),
A 2-byte (RBP2, 3) reserved area;
4 bytes (RBP 4-7) ATS-C start address,
It is composed of an ATS-C end address of 4 bytes (RBP 8 to 11).

  FIG. 46 shows a data structure when the player (playback apparatus) plays back audio data based on the above-described playback control information in AMGI and ATSI. First, one album shows the audio data of the entire surface of the disc, which is the entire surface of a single-sided disc, and the entire surface of a single-sided disc. That is, the audio data of a single-sided disc is composed of one album, and the audio data of a double-sided disc is composed of two albums. One album is composed of 1 to 9 groups # 1 to #n (hereinafter referred to as title groups), and is composed of 2 to 9 title groups when bonus music is included. All bonus songs are arranged in the last title group #n. This one title group is a unit when the player continuously reproduces.

  One title group is a unit when the player continuously reproduces a plurality of audio titles (ATT), and is configured by an arbitrary number (i, j in the figure) of ATTs. The number of ATTs i and j in one title group can be freely selected by the disc producer. ATT # 1 to ATT # i and ATT # j are any one of ATT <1> to ATS <m> shown in FIG. 32, and are based on the above-described reproduction control information in AMGI and ATSI by the player. Are searched and played. Here, the ATT includes audio data and is composed only of an audio-only title (AOTT) that does not include video data, and an audio / video title (AVTT) that includes the AOTT and video data. There are two types. Note that the ATS of the DVD-audio disc shown in FIG. 32 includes only AOTT. Further, the VTS of the DVD-audio disc shown in FIG. 29 includes one or both of AVTT and AOTT.

  As shown in FIG. 47, the audio data of the compressed audio (CA) is composed of stream data for each codec corresponding to the track of each group (here, only group 1 is displayed). Track 1 includes CAg1-t01. CAg1 and CAg1-t01. CA2 is recorded. That is, the file CAg1-t01. CA1 and file CAg1-t01. Together with CA, track 1 is formed.

Similarly, the track 2 includes CAg1-t02. CAg1 and CAg1-t02. CA2 is recorded. Track 3 includes CAg1-t03. CAg1 and CAg1-t03. CA2 is recorded. The track 4 includes CAg1-t04. CAg1-t04, which is a file of CA1 and codec 2. CA2 is recorded. Track 5 includes CAg1-t05. CAg1-t05, which is a file of CA1 and codec 2. CA2 is recorded. Here, the type of codec is
Dolby AC3
MPEG-1 or MPEG-2 (no extension)
MPEG-2 (with extension)
DTS
MP3
mp3PRO
ATRAC3
You can choose from. In this example, there are two codecs, but the number of codecs that can be recorded for each track is 1 to N (where N is an integer of up to 7).

  A specific data structure of CAMG (Compressed Audio Manager: CA_MANGR.IFO) is shown in FIG. The CAMG structure of the compressed audio (CA) in FIG. 48A includes a CAMG management table (CAMG-MAT), group link information (GRLI), group information (GRI), and compressed audio file information (CAFI). And text information (CATXTI).

The CAMG management table (CAMG-MAT) includes a CAMG-MAT identifier, disk name information, copy prevention method information (CPSI), password (HGR_INF), text information character set code information, and reserved area. Consists of. The password (HGR_INF) is the same as the password used in FIG. As the character set code information of the text information, a maximum of two character set codes can be selected from a plurality of codes. A code example is shown below.
1. ISO / IEC646: 1983
2. ISO8859-1: 1987
3. KSC5601-1987
4). KSC5700-1995
5. MS-JIS
6). Big5
7). GB2312
The group link information (GRLI) is composed of group (group # 1 to #n) information of the compressed audio file. The group of compressed audio files (group # 1 to #n) can be the same as the title group of FIG. Group information (GRI)
The number of tracks in each group,
The duration of each track,
And a reserved area. The compressed audio file information (CAFI) is
File name and
Audio attributes,
Copy control information and
It consists of UPC / EAN (Universal Product Code / European Article Number) and ISRC (International Standard Recording Code).

As shown in FIG. 47, the file name is given an extension such as “.CA1” or “.CA2”, and is configured to identify that the codec is different for the same music piece by this extension. Audio attributes are
Sampling frequency (4 bits)
However, 0000b: 48 kHz
0001b: 96 kHz
0010b: 192 kHz
1000b: 44.1 kHz
1001b: 88.2 kHz
1010b: 176.4 kHz
Other: Hold channel information (4 bits)
However, 0000b: 1ch (monaural)
0001b: 2ch (stereo)
0010b: 3ch
0011b: 4ch
0100b: 5ch
0101b: 6ch
Others: Hold and hold area. UPC / EAN and ISRC are each a UPC / EAN code (56 bits) corresponding to the above file,
ISRC code (72 bits),
Information (4 bits) indicating the effectiveness for UPC / EAN and ISRC.

The text information (CATXTI) is composed of text relating to at least one of a disc name, a group name, and a track name, and each includes a title (song name) (64 bytes),
Artist name (64 bytes)
And a reserved area (128 bytes).

  Because of this arrangement, compressed audio data corresponding to the same music (track) as ATS can be selected with reference to the compressed audio manager (CAMG) during reproduction.

Further, as shown in FIG. 48B, still picture information (SPINF) can be arranged for each track. Thereby, audio data and a still image can be taken out simultaneously.
(Encoder configuration and operation)
Next, the configuration of the encoder according to the first and second embodiments will be described in detail with reference to FIG.

As shown in FIG. 49, this encoder includes an A / D converter 36 that receives a video signal V and an A / D converter 31 that receives an audio signal A. Further, this encoder includes a video encoding circuit (V encoder) 37 connected to the output end of one A / D converter 36 and a signal processing circuit connected to the output end of one A / D converter 31. 32 and a memory 33 that functions as data storage means of the signal processing circuit 33. The output terminals of the encoding circuit 37 and the signal processing circuit 32 are connected to a DVD format conversion unit 34. The output terminal of the conversion unit 34 performs EFM (Eight to Fourteen Modulation) modulation or EFM plus modulation on the formatted audio data. The modulation circuit 35, the recording unit 38, and the communication interface (I / F) 39 are connected in parallel, and these components 34, 35, 38, and 39 also form part of the encoder.
A monaural channel or a plurality of channels of analog audio signals A are sampled by the A / D converter 31 at a sufficiently high sampling frequency (sampling period Δt), for example, 192 kHz. Thereby, it is converted into, for example, a 24-bit high-resolution PCM signal (linear PCM signal), and a high-resolution data string (xi) is generated.

  This data string (xi) is encoded by the signal processing circuit 32 and the memory 33 into the user data shown in FIG. The signal processing circuit 32 obtains a head sample from this data string (xi) for each frame by a linear prediction code, and then generates a prediction residual data string (Δxpi) with this data string. As a result, a lossless compressed signal is generated.

  Here, the prediction residual data Δxpi is, for example, 24 bits or less, and the number of bits may be fixed or variable. Next, the head sample and the prediction residual data Δxpi are packed into user data (see FIG. 3) together with the prediction method (1 packet = 2034 bytes), and the user data is output to the DVD formatting unit 34. On the other hand, without performing such lossless compression, the linear PCM signal is directly packed into user data (1 packet = 2304 bytes), and the user data is output to the DVD formatting unit 34.

Further, the video signal V is converted into a digital signal by the A / D converter 36, and then this digital video signal is encoded into the MPEG format by the encoding circuit 37, and then packed into the user data shown in FIG. 34. The DVD formatting unit 34 is a “DVD-ROM-audio disc” in the embodiment of Reference 1, a “DVD-ROM-Van-disc” in the embodiment of Reference 2, or a “DVD-ROM-Audio” in the first embodiment. Pack in format “Disk Type 2”. On the other hand, the music is compressed according to the audio coding mode of compressed audio, and is formatted into a continuous stream format (elementary stream) in units of audio frames as shown in FIG. As a result, a compressed audio file (compressed audio file CAF) is obtained. Each audio frame is defined with respect to the sampling frequency.
48 kHz: 1/1200 sec. 96 kHz: 1/1200 sec. 192 kHz: 1/1200 sec. 44.1 kHz: 1 / 11102.5 sec. 88.2 kHz: 1 / 11102.5 sec. 176.4 kHz: 1 / 11102.5 sec. Management tables such as a CAMG management table (CAMG-MAT), group link information (GRLI), and group information (GRI) are generated. If necessary, text information (disc name, group name, and track name) regarding the audio data is generated.

  The packing data, the stream data, and the management table are modulated by the modulation circuit 35 using a modulation method corresponding to the disk, and a disk is manufactured based on the modulation data.

(Configuration and operation of playback device)
Next, FIG. 51 shows an example of a playback apparatus applicable to the first and second embodiments.
This playback apparatus is an apparatus for playing back audio data recorded on an audio disc DK as DVD-audio according to the present invention. The audio disk DK is loaded in the disk drive 66. In addition to the disk drive 66, this playback apparatus includes a drive control unit 67, a display unit 61, an operation unit 62, a control unit 63, a demodulation circuit 41, a DVD decoding circuit 42, a signal processing circuit 43, a memory 44, an LPF 56, and a D / D. A converter 45 is provided.

  The drive control unit 67 operates in accordance with a control signal given from the control unit 63 to control the drive of the disk drive 66, so that an audio signal at an arbitrary position on the disk DK is sent via a pickup (not shown). Read out. The demodulating circuit 41 demodulates the audio signal read from the disk drive 42 by EFM (Eight to Fourteen Modulation), and sends the demodulated signal obtained as a result to the DVD decoding circuit 42. As will be described later, the DVD decoding circuit 42 decodes (deformats) the demodulated signal in accordance with a designated decoding method and sends it to the signal processing circuit 43. The signal processing circuit 43 processes the decoded signal as will be described later. The decoding circuit 42 and the signal processing circuit 43 operate in cooperation to generate an audio stream signal. This audio stream signal is output from the terminal 53 via the band limiting LPF 56 and also output as an audio analog signal from the terminal 55 via the D / A converter 45. The signal processing circuit 43 outputs the stream signal character data through the terminal 64 and outputs the stream signal as a digital signal from the terminal 65. This terminal 65 is connected to an external device via an IEEE 1394 bus.

The user operates the operation unit 62 to give instructions necessary for reproduction. This operation includes an operation of inputting a password.
The control unit 63 includes a CPU that operates based on a program stored in advance, and performs processing to be described later. This processing is performed using an audio signal (a signal indicating whether or not the audio disc has a compressed audio-directory (CA-D) or a disc identifier) read out through the DVD decoding circuit 42. The determination of whether the disc DK is “DVD audio (conventional audio disc)” or “DVD audio type 2” (audio disc according to the present invention: “type 2” represents such a disc) is also included. The disc type determination may be executed by a disc determination circuit placed in the control unit 63 exclusively for determination. The display unit 61 performs necessary display to be provided to the user under the control of the control unit 63. This display includes menu display of audio data. Therefore, an interface between the user and the playback device is configured by a part of the function of the control unit 63, the operation unit 62, and the display unit 63.

  Note that the playback apparatus shown in FIG. 69 can be used instead of the playback apparatus described above. 51, the audio data is transferred between the driver 72 and a drive 72 that reads / writes audio data from / to a recording device 71 such as a hard disk (HD) or an SD (Secure Digital) memory card. A signal processing circuit 73 for reading and writing is added. The recording device 71 is detachably loaded in the drive 72. The signal processing circuit 73 can send and receive digital audio data to and from the signal processing circuit 43 described above. The driver 72 operates under the control signal from the control unit 63. By adding the blocks 72 and 73, it becomes possible to record audio data on the recording device 71 loaded in the driver 72 as an internal device and to reproduce the data.

(DVD decoding circuit and signal processing circuit)
Next, the operations of the DVD decoding circuit 42 and the signal processing circuit 43 mounted on the playback apparatus of FIG. 51 will be described with reference to FIG.
First, the recording data is read by accessing the disk DK (step S20), and then in each of the separation steps S21 to S29, a video signal, a still image signal, an audio signal, copyright information and real-time information (RTI), and text Information and disc identifier (EX) are separated. Next, in each decoding step S22 to S30, each separated data is decoded and then reproduced synchronously (steps S31 and S32).

Here, there are the following three processes for reproducing the still image SP.
1) When the still image SP is obtained, the reproduction of the audio signal A is interrupted and muted.
2) When the still image SP is obtained, it is reproduced together with the audio signal A based on the time control signal.
3) When the still image SP is obtained, the page turning reproduction is performed based on the page turning command instructed by the user. At this time, the audio signal A is reproduced as it is.

  When it is necessary to synchronize the still image with the audio, the time control signal for real-time synchronization is set in the time control data information (under the still picture control information table SPCIT provided in addition to the ATSI). (SPCIT-TCDI).

  Further, still picture page control command information (SPPI) containing a page turning command is placed under SPCIT. Thus, SPCIT is composed of general information SPCIT general information (SPCIT-GI), time control data information (SPCIT-TCDI), and still picture page control command information (SPPI). .

  Here, the side information for controlling the page of the still picture can be included in the still picture data of the SPCT pack of the real-time information RTI of the still picture SP. The page control data defined by the side information is interpreted with reference to the SPPI, and page control is performed.

  If the still picture data does not have enough capacity to contain the above side information, the RTI data of the RTI pack includes the side information for page control of the above still picture. It is also permissible.

(Control part)
The processing of the control unit 63 described above will be described with reference to FIGS. 53, 54, 55, and 56.
First, operations performed on an audio disc that does not have a compressed audio-directory (CA-D) will be described with reference to FIGS.

  First, the control unit 63 sends a signal indicating whether or not a compressed audio-directory (CA-D) exists in the audio disk DK from the audio disk DK loaded in the drive 66 to the DVD decoding circuit 42. (FIG. 53, step S1A). Next, the control unit 63 determines whether or not the audio disc DK is a disc having a compressed audio-directory using the read signal (step S1B).

  The process for determining the type of the audio disk may be determined using a disk identifier. That is, the control unit 63 reads a signal indicating a disc identifier (see FIG. 25, book type and part version) from the audio disc DK via the DVD decoding circuit 42, and uses this identifier.

  If it is determined in step S1B that the audio disc DK is a disc having a compressed audio-directory, that is, “DVD audio type 2” according to the present invention (YES in step S1B), the processing is terminated. The On the other hand, when it is determined that the audio disc DK is a disc that does not have a compressed audio-directory, that is, a conventional “DVD audio disc” (step S1B, NO), the processing of the control unit 63 is performed in step S1. Shift to subsequent processing.

  The processing after step S1 will be described in detail. At the time of reproduction, a predetermined menu including a group number is first displayed on the display unit 61, and the group number is input by the user via the operation unit 62 on this menu. The Next, the control unit 63 determines whether or not a bonus program has been selected by the user (step S2). As a result, when the bonus program is selected, such as when the final group number is selected, the processing of the control unit 63 proceeds from step S2 to step S3. In other cases, the process proceeds from step S2 to step S9, and reproduction according to the instruction is performed. In step S3, the control unit 63 reads the password shown in FIG. 32 from the AMGI, and then determines whether or not password = 0000, that is, whether or not bonus information is stored (step S4). If the bonus information is not stored, the fact is displayed on the display unit 61 (step S5), and the process proceeds to step S9.

  On the other hand, if bonus information is included in step S4, the control unit 63 waits for input of a password (step S6). When the password is entered, it is determined whether or not the password is correct (step S7). If it is correct, the process proceeds to step S8. If it is not correct, the process proceeds to step S9. In step S8, a bonus menu is displayed, and then playback according to the instruction is performed (step S9).

  FIG. 54 shows the process of step S9 in detail. First, referring to AOTT-SRPT (Audio Title Search Pointer Table) in AMGI shown in FIGS. 33 to 36 (step S11), the AOTT-GRN (group number) shown in FIG. 36 is searched. Then, the audio titles (ATT) belonging to the designated group are listed together with the ATS (step S12).

  Here, the group number is determined by bits b3 to b0 of ATT-CAT (audio title category) shown in FIGS. 35 and 36, and the number of programs in the AOTT is shown by AOTT-PG-Ns shown in FIG. (= Number of tracks) is understood, ATS number is understood by ATSN, and ATS title number is understood by ATS-TTN. Therefore, the group number and audio title (ATT) number shown in FIG. 46 can be understood. In addition, the last audio title number Imax belonging to the specified group is determined by this listing. Next, the audio title number ATTi = 1 is set (step S13).

  Next, referring to ATS-PGCI (ATS program chain information) in ATSI shown in FIGS. 40 to 45 (step S14), the ATTi address (that is, the start address and end address of the ATS cell) is searched. Thereby, ATTi is reproduced (step S15). Here, the title number shown in FIG. 46 is obtained from the ATS-PG-CNT (content) in the ATS-PGI shown in FIG. 43, and the index shown in FIG. 46 is found from the ATS-PG entry cell number. Next, the audio title number ATTi is incremented (step S16). If i> Imax is not satisfied in step S17, the process returns to step S14. On the other hand, if i> Imax, this group reproduction is terminated.

Next, an operation executed for an audio disc having a compressed audio-directory (CA-D) will be described with reference to FIGS.
First, the control unit 63 sends a signal indicating whether or not there is a compressed audio-directory (CA-D) from the audio disk DK loaded in the drive 66 through the DVD decoding circuit 42 on the audio disk DK. (FIG. 55, step S21A). Next, the control unit 63 determines whether or not the audio disc DK is a disc having a compressed audio-directory using the read signal (step S21B).

In this determination, as described above, the type of the audio disk may be determined using the disk identifier.
If it is determined in step S21B described above that the audio disc DK is a disc that does not have a compressed audio-directory, that is, a conventional “DVD audio disc” (step S21B, NO), the processing of the control unit 63 is as follows. Is terminated. On the other hand, when it is determined that the audio disk DK is a disk having a compressed audio-directory, that is, “DVD audio disk type 2” according to the present invention (YES in step S21B), the control unit 63 performs step The processes after S21 are sequentially performed.

  More specifically, as shown in FIG. 55, the control unit 63 displays a menu on the display unit 61 (step S21), and determines whether an audio zone is selected by the user on this menu (step S22). ). As a result, when it is determined that the audio zone has been selected (YES in step S22), the process of the control unit 63 proceeds to step S23, and the same processes as steps S1 to S9 of FIG. 53 are performed. On the other hand, when the compressed audio zone is selected on the menu (NO in step S22), the control unit 63 determines the group number (step S32) and selects the track and / or audio coding mode (step S33). ), A file corresponding to the instruction is read (S34). In the case where a bonus is included in the compressed audio zone, the control unit 63 reads the password from the CAMG management table or AMGI by a process similar to steps S24 to S30 (not shown), and the password entered is correct. Proceed to step S33.

  By the way, after converting into the above format, this is temporarily recorded on the intermediate recording medium via the communication interface (I / F) 39 and the communication line or by the recording unit 38, and then the communication interface (I / F). 39 and the communication line can be transmitted to the user's terminal and played back by the user.

  FIG. 56 is a flowchart showing the processing in this case. The video signal V is input to perform audio encoding processing as shown in FIG. 49 (steps S101 and S102), and the audio signal A is input to FIG. Signal processing is performed as shown (steps S103 and S104), and character information and disc identifiers are further input and encoded (steps S105 and S106). Then, the information is converted into a DVD format as in Reference 1, Reference 2, First, and Second Embodiment (step S107), and is output for transmission to the user terminal (step S108). In the DVD format as in the first and second embodiments, a compressed audio file (compressed audio file CAF), a CAMG management table (CAMG-MAT), group link information (GRLI), and group information (GRI) are generated. (Step S107). If necessary, text information (disc name, group name, and track name) regarding the audio data is further generated.

(Modification)
Next, another process is shown. The encoder shown in FIG. 57 is configured so that the computer program CP for decoding the data encoded as described above can be input and stored in the CTS unit of FIG. 29, for example. Alternatively, a program for further encoding is input. FIG. 58 shows this other processing. In step S105 ′, a program for decoding the format as in Reference 1, Reference 2, First, and Second Embodiment is input together with character information, a disc identifier, and the like. Encode. The processing of the video signal V and the audio signal A is the same as that shown in FIG. Then, the information is converted into a format as in Reference 1, Reference 2, First, and Second Embodiments, scrambled (step S107 ′), and transmitted to a user terminal at a predetermined rate. And record it on another medium (steps S109 and S110).

  FIG. 59 shows terminals (a personal computer or a recording / reproducing apparatus with a network terminal; hereinafter simply referred to as “personal computer”) 107 on the data transmission side (encoding side) and the data reception side (above editor). 60 shows the processing of the personal computer 106 on the data receiving side. The personal computer 106 has a format as shown in Reference 1, Reference 2, First, Second Embodiment from the disk drive device 104 or the network terminal 105. Audio sources and decoding programs are supplied.

  The personal computer 106 includes a CPU 106a having a special-purpose instruction set added mainly for efficiently processing digital signals such as images and sounds, such as Intel's PP55C extended instruction set (MMX), and data A RAM 106b used as a buffer at the time of processing, a data converter 106c for converting data supplied from the disk drive device 104 or the network terminal 105, and a plurality of processed audio data via a D / A converter and an amplifier An audio interface (I / F) 106d for supplying to speakers (103L and 103R in the figure, and further surround speakers 103C and 103S), a display processor 106e for controlling display of a display unit (not shown), and an illustration (not shown) Mouse and keys An operation signal generating section 106f for generating an operation signal based on the operation input signal from the over-de.

  In such a configuration, as shown in FIG. 60, the CPU 106a of the personal computer 106 on the data receiving side inputs a program load instruction (command) via a keyboard (not shown) in a state where the above decoding program can be input ( In step S131, the decoding program is loaded into the RAM (step S132). When the loading is completed, a program load flag is set (step S133), and the process is terminated. At this time, since the CPU 106a is MMX compatible, high-speed signal processing is possible.

  Further, when a play command is input via a keyboard (not shown) in a state where the above audio source can be input, the CPU 106a accesses the first track and reads a disk identifier indicating the type of the disk. It is checked whether or not it is “audio source” (step S134). If YES, decoding processing is executed (step S135), and then the processed audio data and video data are sent to the audio I / F 106d and the display processor 106e, respectively. (Step S136) Next, the process returns to step S135, and the decoding process is repeated. By this processing, the user can reproduce an audio signal transmitted via a recording medium or a communication medium. If it is not “DVD audio source” in step S134, “unable to play” is displayed on a display unit (not shown) (step S137), and the process ends. In addition, if necessary, an encoding process may be performed.

  Next, an embodiment in which the above program and a digital audio signal processed by this program are transmitted via a communication line will be described. 61 is a block diagram showing in detail the network terminal 105 in the personal computer 106 shown in FIG. 59, FIGS. 62 and 63 are flowcharts showing the processing of the data conversion unit of FIG. 61, and FIG. 64 is an explanatory diagram showing the communication network. 65 is an explanatory diagram showing packet processing on the network of FIG. The terminal 105 is provided on both the data transmission side and the data reception side personal computer 106, and includes a reception buffer T1 and a transmission buffer T2 connected to the internal bus of the personal computer 106, a data conversion unit T4, and an adapter T3 which is a communication interface. And a terminal T6 and a controller T5.

  As shown in FIG. 62, the data conversion unit T4 on the data transmission side divides the transmission data stored in the transmission buffer T2 into packets of a predetermined length (step S41), and then sets the destination address at the beginning of the packet. A header including the same is added (step S42), and this is then output on the network NW via the adapter T3 and the terminal T6 (step S43). As shown in FIG. 63, the data conversion unit T4 on the data receiving side removes the header from the packet received from the network NW via the terminal T6 and the adapter T3 (step S51), and then restores the received data (step S52). Next, this is transferred to the internal RAM 106b shown in FIG. 59 via the reception buffer T1 (step S53).

  The terminal T6 on the data transmission side and the data reception side are connected via a network NW as shown in FIG. 64, for example. In this network NW, for example, data is transmitted using a CATV line or a TCP / IP (Transmission Control Protocol / Internet Protocol) protocol called the Internet (1 in circles, 2 in circles, 3 in circles,... Transmitted in units). In this case, a packet output from the data transmission side (indicated by 1 in a circle, 2 in a circle, 3 in a circle,...) Is a router R on the network NW as shown in FIGS. , The optimum route is selected and separated for each packet (indicated by 1 in a circle, 2 in a circle, 3 in a circle,...), And then each packet separated by the router R is a packet switch Pn ( n = 1 to k) are sent to the personal computer 106 on the data receiving side in the order of packets (indicated by 1 in a circle, 2 in a circle, 3 in a circle, etc.).

  Therefore, the personal computer 106 on the data receiving side can decode the audio source transmitted from the data transmitting side based on the program on the program RAM 106b. Therefore, the personal computer user can play the audio disc without needing it.

  It should be noted that a recording medium such as an HD (hard disk) to be recorded and reproduced by the CPU 106a is provided, and the received audio source is recorded on the recording medium and then reproduced, so that the audio disk is reproduced. It can also be used.

  Next, bonus management in compressed audio (CA) can be simplified by not providing compressed audio data for tracks for the bonus group. For example, in FIG. 32, a track for which compressed audio data is not prepared is a bonus track arranged at ATS <m>.

  Also, on the disc, as shown in FIG. 66, the DVD audio recording area which is the first audio zone is arranged on the inner side, and the compressed audio recording area which is the second audio zone is continuously arranged on the outer side. it can. This speeds up access during playback.

  An example of a method of recording the disk of the first and second embodiments on a copy destination medium (for example, a memory card stored in a portable player, a small hard disk HDD, etc.) will be described with reference to FIG. The processing of this recording method is executed by, for example, the control unit 63 of the playback device shown in FIG.

  Specifically, as shown in FIG. 67, the user determines a track (Track) to be copied in the disc (step S81), and determines whether or not there is a compressed audio file of a compression method that can be used at the copy destination. Judgment is made (step S82). If there is a compressed audio file corresponding to the copy destination (YES in step S82), it is recorded on the copy destination medium (step S84). If there is no compressed audio file of the compression method that can be used at the copy destination (NO in step S82), the PCM data of the track to be copied is compressed and encoded by the desired compression method (step S83), and is stored in the copy destination medium. Recording is performed (step S84).

  Next, an example of a method for recording and reproducing the disc of the first and second embodiments on a copy destination medium will be described with reference to FIG. In FIG. 68, the user determines a track to be copied in the disc (step S91), and determines whether there is a compressed audio file of a compression method that can be used at the copy destination (step S92). If there is a compressed audio file corresponding to the copy destination (YES in step S92), it is recorded on the copy destination medium (step S94). If there is no compressed audio file of the compression method that can be used at the copy destination (NO in step S92), the PCM data of the track to be copied is selected (step S93) and recorded on the copy destination medium (step S94). . Then, the copied track is reproduced (step S95). In step S93, the PCM data of the track to be copied may be compressed and encoded by a desired compression method.

  When recording from the PCM data to the copy destination medium, the number of copies allowed to the user is managed by the above-described audio pack (A pack) copy restriction management information, that is, "audio copy permission" and "audio copy number". ing. Further, when recording from the compressed audio file to the copy destination medium, the number of copies permitted to the user by “audio copy number” and “audio copy number” in the copy control information provided in the compressed audio file information (CAFI). Is managed.

  The present invention includes not only reproducing the above-described audio disc but also recording on a copy destination medium and recording and reproduction.

It is explanatory drawing which shows embodiment of the reference example of the format of DVD-video, and the format of DVD-audio based on this invention. It is explanatory drawing which shows the audio content block unit of FIG. It is explanatory drawing which shows the format of the audio pack of FIG. 2, and a video pack in detail. FIG. 3 is an explanatory diagram showing in detail the format of the audio control pack of FIG. 2. FIG. 5 is an explanatory diagram showing in detail the format of an audio character display (ACD) area in FIG. 4. It is explanatory drawing which shows the example displayed by the name space information of FIG. FIG. 5 is an explanatory diagram showing in detail the format of an audio search data area in FIG. 4. It is explanatory drawing which shows the other structural example of the audio content block unit of FIG. It is explanatory drawing which shows ACBU and VCBU of embodiment of the reference 2. FIG. It is explanatory drawing which shows the other example of ACD (audio character display) information of embodiment of the reference 2. FIG. It is explanatory drawing which shows ASD (audio search data) of embodiment of the reference 2. FIG. FIG. 10 is an explanatory diagram showing the CONT pack of FIG. 9 in detail. It is explanatory drawing which shows the PCI data of FIG. 12 in detail. It is explanatory drawing which shows the PCI general information of FIG. 13 in detail. It is explanatory drawing which shows the recording information of FIG. 13 in detail. It is explanatory drawing which shows the DSI data of FIG. 12 in detail. It is explanatory drawing which shows the DSI general information of FIG. 16 in detail. It is explanatory drawing which shows the seamless reproduction information of FIG. 16 in detail. It is explanatory drawing which shows the concept of the seamless angle change by the angle information for seamless of FIG. It is explanatory drawing which shows an example of the VOBU search information of FIG. It is explanatory drawing which shows the VOBU search information of FIG. 16 in detail. It is explanatory drawing which shows the synchronous information of FIG. 16 in detail. It is explanatory drawing which shows the structure of the lead-in area of embodiment of the reference 1 and the reference 2. FIG. It is explanatory drawing which shows the control data block of FIG. 23 in detail. FIG. 25 is an explanatory diagram showing the physical format information of FIG. 24 in detail. It is explanatory drawing which shows the specific example of TOC information recorded on the copyright information area of FIG. It is explanatory drawing which shows in detail the TOC information recorded on the copyright information area of FIG. It is explanatory drawing which shows the attribute information of FIG. 27 in detail. It is explanatory drawing which shows the basic format of the disk of 1st Embodiment of the information recording medium with which this invention is applied. It is explanatory drawing which shows a part of audio title set (ATS) of 1st Embodiment. It is explanatory drawing which shows embodiment of the other example of a DVD-video format and the DVD-audio format based on this invention. It is explanatory drawing which shows the format of a DVD-audio disk as 2nd Embodiment of the information recording medium with which this invention is applied. It is explanatory drawing which shows in detail the format of AMGI (audio manager information) and AOTT-SRPT (audio only title search pointer table) of FIG. FIG. 34 is an explanatory diagram showing in detail the format of AOTT-SRPTI (audio only title search pointer table information) of FIG. 33; FIG. 33 is an explanatory diagram showing in detail the format of AOTT-SRP (Audio Only Title Search Pointer) of FIG. 32; FIG. 36 is an explanatory diagram showing in detail the format of ATT-CAT (audio title category) in FIG. 35; FIG. 33 is an explanatory diagram showing in detail the formats of ATS (audio title set) and ATSI (audio title set information) in FIG. 32; FIG. 38 is an explanatory diagram showing in detail the format of AOTT-AOBS (audio object set for audio-only title) in FIG. 37; FIG. 38 is an explanatory diagram showing in detail the format of ATS-PGCIT (ATS program chain information table) in FIG. 37; It is explanatory drawing which shows in detail the format of ATS-PGCI (ATS program chain information) of FIG. It is explanatory drawing which shows in detail the format of ATS-PGC-GI (ATS-PGC general information) of FIG. It is explanatory drawing which shows in detail the format of ATS-PGIT (ATS program information table) of FIG. FIG. 43 is an explanatory diagram showing in detail the format of ATS-PGI (ATS program information) of FIG. 42. It is explanatory drawing which shows in detail the format of ATS-C-PBIT (ATS cell playback information table) of FIG. FIG. 45 is an explanatory diagram showing in detail the format of ATS-C-PBI (ATS cell playback information) in FIG. 44; It is explanatory drawing which shows the data structure of the music seen from the reproduction | regeneration side. It is a figure for demonstrating an example of the data arrangement | sequence of the compression audio zone in this invention. (A) And (B) is a figure which shows the data arrangement | sequence of the ROM audio manager of FIG. 47, respectively. It is a block diagram which shows the encoding apparatus of an audio disc. It is a figure of the stream which accommodates compressed data. It is a block diagram which shows an example of the reproducing | regenerating apparatus which concerns on this invention. FIG. 5 is an operation flowchart of the DVD decoding circuit 42 and the signal processing circuit 43. It is a flowchart for demonstrating reproduction | regeneration processing. 54 is a flowchart for explaining in detail the group reproduction processing of FIG. 53. It is a flowchart for demonstrating reproduction | regeneration processing. It is a flowchart which shows the encoding method of an audio disc. FIG. 12 is a block diagram showing another example of an audio disk encoding device. It is a flowchart which shows the other encoding method of an audio disc. It is a block diagram which shows the terminal for transmitting audio data. 60 is a flowchart showing processing of the terminal of FIG. 59. FIG. 60 is a block diagram showing in detail a network terminal in the personal computer shown in FIG. 59. It is a flowchart which shows the process of the data conversion part by the side of data transmission. It is a flowchart which shows the process of the data conversion part by the side of a data reception. It is explanatory drawing which shows a communication network. FIG. 65 is an explanatory diagram showing packet processing on the network of FIG. 64. FIG. 2 is a layout diagram of an example disk according to the present invention. It is a flowchart for demonstrating an example of the recording process to a copy destination. It is a flowchart for demonstrating the method to record and reproduce | regenerate to a copy destination. It is a block diagram which shows the other example of the reproducing | regenerating apparatus concerning this invention.

Explanation of symbols

A Audio Pack ACB Audio Content Block ACBS Audio Content Block Set ACBU Audio Content Block Unit AMG Audio Manager ATS Audio Title Set ATSI Audio Title Set Information A-CONT Audio Control Pack CONT Navigation Control Pack V Video Pack CA Compressed Audio CAMG Compressed Audio Manager 34 DVD formatting part (means for formatting)
106 terminal (reception means)
61 Display unit 62 Operation unit (input means)
63 Control unit (reproducing means)

Claims (2)

A plurality of tracks each including one original music and a bonus music for selectively reproducing separately from the original music are recorded, and a first for reproducing each track on the playback side Control information and data to be compared with data supplied to access the bonus music by the user at the time of playback, and the bonus music is allowed to be played back when the supplied data is the same First management information (AMG) including interactive data is recorded, and the music is a music based on a linear PCM signal quantized with a sampling frequency and a quantization bit number specified in the DVD audio standard, Or a first audio zone that is a song with a lossless compressed signal based on the linear PCM signal;
In addition to the first audio zone, there is a second audio zone that is an area for recording music by a compressed signal with a predetermined loss,
Wherein the second audio zone, a plurality of files which the predetermined lossy compressed signal according to a piece of music was stored respectively, and second control information for reproducing the each file in the reproducing side, the Second management information (CAMG) including the same interactive data as the interactive data recorded in one management information (AMG) is recorded, and each song stored in each file is recorded in the first management information (AMG) . In addition to the music corresponding to the music included in any one of the audio zones,
As the files recorded in the second audio zone, a plurality of files in which music corresponding to one track of the first audio zone is individually stored with a plurality of loss-compressed signals and compressed with loss respectively. And the plurality of files have a common file name, and an extension attached to the file name is a different extension corresponding to each of the plurality of lossy compression methods. . A playback device for playing back music recorded on the audio disc according to claim 1 ,
Read means for reading out the music by selecting whether to read the music recorded in the first audio zone or the music recorded in the second audio zone in the audio disc;
When the music read by the reading means is reproduced according to the read first or second control information corresponding to the music, if the music is the bonus music, the bonus music is accessed. Interactive data to be played, and the bonus music is played back when the input interactive data and the interactive data recorded in the first management information (AMG) or the second management information (CAMG) match. Reproduction means;
A playback apparatus characterized by comprising:

Images