JP2004178806A - Audio disk and its reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a DVD audio disk reproducing device which is conveniently used by a user to perform reproducing easily when an audio signal is mainly recorded. <P>SOLUTION: A CONT pack detecting section 3 and an A-CONT pack detecting section 9 respectively detect a CONT pack and an A-CONT pack in data reproduced from a DVD audio disk 1 and set control parameters in parameter sections 8 and 14, and sequentially write a V pack and an A pack controlled by the CONT pack and the A-CONT pack in a V pack buffer 4 and an A pack buffer 10, respectively. A video signal and an audio signal in the packs written in the V pack buffer 4 and the A pack buffer 10 are, in the order of the packs, based on SCRs in the V pack and the A pack, taken out in the order of output time, based on PTSs in the CONT pack and the A-CONT pack, respectively. <P>COPYRIGHT: (C)2004,JPO

Description

  The present invention relates to an audio disc reproducing apparatus.

  A CD (compact disc) is known as a conventional optical disc for audio reproduction. A DVD (digital video disk) is known as an optical disk having a higher density than a CD.

However, in a DVD (hereinafter, DVD-video), a video signal is recorded as a main signal, and an audio signal is recorded as a sub signal.
(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) Simple character information such as a song title cannot be extracted.

  Also, since audio users have a wider range of usage layers than video, a simple reproduction method is required by providing a TOC (table of content) area like a CD. However, in the case of DVD-video, a navigation control pack (CONT pack), a plurality of video (V) packs and an audio (A) pack constitute a video content block unit, and playback of the V and A packs is controlled by the CONT pack. Therefore, there is a problem in that even if an audio signal is mainly recorded, it cannot be easily reproduced for the user, and the usability is poor.

Further, in DVD-Video, time management is performed only in video frame units. Therefore, even if an audio signal is mainly recorded, continuity of the audio signal is more important than video, so that real-time management is difficult. There is a problem.
Further, at present, a DVD video disc and a DVD video player dedicated to the DVD video disc are commercially available, and can reproduce a music CD and a video CD in addition to the DVD video disc. It is more desirable to use a player capable of reproducing various DVDs in addition to a DVD audio disc mainly recording the DVD.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a user-friendly audio disc reproducing apparatus that can be easily reproduced by a user when mainly recording an audio signal.
Another object of the present invention is to provide an audio disc reproducing apparatus capable of reproducing both a DVD-video disc and an audio disc mainly recording audio signals.

The present invention comprises the following means 1) and 2) to achieve the above object.
That is,
1) The recording area for the auxiliary signal and the recording area for the main signal are continuously arranged, and the recording area for the auxiliary signal includes at least a disk identifier for identifying a disk.
In the recording area of the main signal,
A multi-channel analog audio signal is allocated to a front-only channel group of the multi-channel and a rear and LFE channel group, and the sampling frequency is different for each of the front-only channel group and the rear and LFE channel groups. The digital audio signal is sampled and recorded as a digital audio signal quantized with the number of quantization bits for each of the front-only channel groups and the rear and LFE channel groups, and further, the same or different quantization bits as the multi-channel. An audio pack quantized by a number and recorded as a two-channel digital audio signal for stereo;
An audio title composed of the audio pack;
An audio title set including the audio title;
A quantization control information area in which the sampling frequency and the number of quantization bits for each group of the front only channel group and the rear and LFE channel groups of the digital audio signal recorded in the audio pack are recorded;
A title search information area in which search information for searching for the title of the digital audio signal is recorded;
An audio manager including an area (AMGM-LU) of an audio manager menu language unit in which search information (AMGM-PGCI-SRP # 1 to #n; n is an integer) for searching the menu of the title is recorded. -Menu information management area (AMGM-PGCI-UT)
An audio manager information (AMGI) including the title search information area and the audio manager menu information management area (AMGM-PGCI-UT);
An audio manager (AMG) including the audio manager information (AMGI);
Audio disc recorded in a predetermined format.
2) An audio disk reproducing apparatus for reproducing a signal recorded on an audio disk according to claim 1,
Means for identifying a disk based on the disk identifier;
If the audio disk is identified, the digital audio signal is recorded on the quantization control information area based on the sampling frequency and the number of quantization bits of the front only channel group and the rear and LFE channel groups. Means for D / A converting digital audio signals of the channels of the front only channel group and the rear and LFE channel groups recorded in the audio pack;
Means for searching and playing the menu of the title based on the audio manager menu language unit;
Means for searching for and playing back the title based on the search information,
Audio disc reproducing apparatus having the same.

  As described above, according to the present invention, when recording multi-channel and two-channel stereo, the multi-channel can be divided into two groups and quantized and recorded at different sampling frequencies, so that the recording time can be reduced within a fixed recording capacity. It can be adjusted and can be recorded together with a menu or the like from which a language can be selected, so that usability is improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The DVD-Video standard will be described as an example of the predetermined standard. FIG. 1 is an explanatory diagram showing one embodiment of a DVD-video format and a DVD-audio format according to the present invention. FIG. 2 is an explanatory diagram showing the format of an audio manager (AMG) in FIG. 1 in detail. FIG. 4 is an explanatory diagram showing the format of the audio title set (ATS) of FIG. 1 in detail, FIG. 4 is an explanatory diagram showing the format of the audio manager information (AMGI) of FIG. 2 in detail, and FIG. 5 is an audio title set attribute table ( FIG. 6 is an explanatory diagram showing the format of the audio title set attribute data (ATS-ATR) in FIG. 5 in detail, and FIG. 7 is an explanatory diagram showing the format of the audio title set attribute data (ATS-ATR) in FIG. Format FIG. 8 is an explanatory diagram showing the format of the audio title set information management table (ATSI-MAT) of FIG. 7 in detail, and FIG. 9 is an audio title set menu audio stream attribute data (ATSM-AST) of FIG. FIG. 10 is an explanatory diagram showing the format of the audio title set audio stream attribute table (ATS-AST-ATRT) of FIG. 8 in detail, and FIG. 11 is an attribute diagram of each audio stream of FIG. FIG. 3 is an explanatory diagram showing data (ATS-AST-ATR) in detail.
FIG. 12 is an explanatory diagram showing the audio content block unit (ACBU) of FIG. 1, FIG. 13 is an explanatory diagram showing the format of the audio pack and video pack of FIG. 12 in detail, and FIG. FIG. 15 is an explanatory diagram showing the format of the audio character display (ACD) area in FIG. 14 in detail, and FIG. 16 is an explanatory diagram showing an example displayed by the namespace information in FIG. FIG. 17 is an explanatory diagram showing the format of the audio search data (ASD) area in FIG. 14 in detail, and FIG. 18 is an explanatory diagram showing a modification of the audio content block unit in FIG.
FIG. 19 is a block diagram showing a DVD-Audio disc reproducing apparatus according to the present invention, FIG. 20 is a block diagram functionally showing the reproducing apparatus of FIG. 19, and FIG. AMGI), FIG. 22 is an explanatory view showing the TOC information of FIG. 21 in detail, and FIG. 23 is an explanatory view showing the format of the audio title set information (ATSI) in the modification of the second embodiment in detail. FIG. 24 is a block diagram showing a DVD-Audio disc reproducing apparatus according to the second embodiment, FIG. 25 is a block diagram functionally showing the reproducing apparatus shown in FIG. 24, and FIG. FIG. 27 and FIG. 28 are block diagrams showing a reproducing apparatus, and FIG. It is over chart.

  Here, the DVD-audio disc described in this description has a stereo 2-channel and a 5/6 / 8-channel multi-channel as an audio signal so as to correspond to a transition period when shifting from the CD generation to the DVD-audio generation. Are recorded. When the transition period has elapsed, it is considered that only the multi-channel signal of 5/6/8 channel is recorded.

  FIGS. 1A and 1B show DVD-video and DVD-audio formats, respectively. The DVD-audio format has different area names but is compatible with DVD-video. First, the DVD-video format is roughly composed of a video manager (VMG) at the head and each area of a plurality of video title sets (VTS) following the format. On the other hand, the DVD-audio format corresponds to the figure. 2 and an audio title set (ATS) following the AMG, as shown in detail in FIG.

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

  Each of the VCBSs is made up of a plurality of VCBs, while each of the ACBSs is made up of a plurality of ACBs. Each of the VCBs corresponds to one title of the video, and each of the ACBs corresponds to one title of the audio. Each VCB (one title) is constituted by a plurality of chapters (Chapter), while each ACB (one title) is correspondingly constituted by a plurality of tracks (Track). A chapter contains a part of title (PTT) and a track contains a part of title (PTT).

  Each of the chapters is constituted by a plurality of cells (CELL), while each of the tracks is correspondingly constituted by a plurality of indexes (Index). Each of the cells is composed of a plurality of VCBU units (VCBU), while each of the indexes is correspondingly composed of a plurality of ACB units (ACBU). 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 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. Is composed of a head audio control pack (hereinafter, A-CONT pack) corresponding thereto, followed by a plurality of A packs and V packs.

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

AMG (Audio Manager), as shown in FIG.
Audio manager information (AMGI) shown in detail in FIG.
・ Audio content block set (AMGM-ACBS) for AMG menu and ・ AMGI for backup
Having. The AMGM-ACBS includes presentation control information (PCI) and data search information (DSI) as control information.
Having.

ATS (Audio Title Set) is as shown in FIG.
Audio title set information (ATSI) shown in detail in FIG.
An audio content block set (ATSM-ACBS) for the ATS menu;
・ Audio content block set (ATSA-ACBS) for ATS title and ATSI for backup
Having. Both ATSM-ACBS and ATSA-ACBS have the PCI and DSI described above (FIG. 2).

AMGI (Audio Manager Information), as shown in detail in FIG.
・ AMGI management table (AMGI-MAT)
A title search pointer table (T-SRPT);
An audio manager menu PGCI unit table (AMGM-PGCI-UT);
-Parental management information table (PTL-MAIT)
An audio title set attribute table (ATS-ATRT);
A text data manager (TXTDT-MG);
An audio manager menu cell (index) address table (AMGM-C-ADT);
・ Audio manager menu ・ Audio content block unit ・ Addressless map (AMGM-ACBU-ADMAP)
Having.

The ATS-ATRT (audio title set attribute table), as shown in detail in FIG.
Audio title set attribute table information (ATS-ATRTI);
An audio title set attribute search pointer (ATS-ATR-SRP # 1 to #n) of each of the plurality (n) ATSs; and an audio title of each of the plurality (n) ATSs as shown in detail in FIG. Set / attribute data (ATS-ATR- # 1- # n)
Having.

As shown in detail in FIG. 6, each of the audio title set attribute data (ATS-ATR- # 1 to #n) includes: ATS-ATR-EA (end address);
ATS-CAT (category) and ATS-ATRI (information)
Having.

The ATSI (ATS information) shown in FIG. 3 is, as shown in detail in FIG.
An audio title set information management table (ATSI-MAT) shown in detail in FIG.
An audio title set, a part of title, a search pointer table (ATS-PTA-SRPT),
-Audio title set-Program chain information table (ATS-PGCIT)
-Audio title set menu-PGCI-Unit table (ATSM-PGCI-UT)
Audio title set time map table (ATS-TMAPT)
・ Audio title set menu ・ Cell address table (ATSM-C-ADT)
-Audio title set menu-Audio content block unit-Address map (ATSM-ACBU-ADMAP)
An audio title set cell address table (ATS-C-ADT);
-Audio title set-Audio content block unit-Address map (ATS-ACBU-ADMAP)
Having.

The ATSI-MAT (Audio Title Set Information Management Table) shown in FIG.
ATS-ID (identifier);
ATS-EA (end address),
・ ATSI-EA,
・ VERN (DVD audio specification version number)
-ATS-CAT (category) and
・ ATSI-MAT-EA,
ATSM-ACBS-SA (start address)
ATSA-ACBS-SA,
ATS-PTA-SRPT-SA,
ATS-PGCIT-SA,
ATSM-PGCI-UT-SA,
ATS-TMAP-SA,
ATSM-C-ADT-SA,
ATSM-ACBU-ADMAP-SA;
ATSM-AST-ATR (ATSM audio stream attribute data) as shown in detail in FIG.
ATS-AST-Ns (the number of ATS audio streams);
ATS-AST-ATRT (ATS audio stream attribute table) as shown in detail in FIG.
Having.

The ATSM-AST-ATR is composed of 8 bytes (bits b63 to b0) as shown in detail in FIG. 9, and the following data (1) to (4) as attributes of the encoded audio signal recorded on this disc. ) Is placed (other bits are reserved).
(1) Audio encoding mode (3 bits b63 to b61)
000b: Dolby AC-3
010b: MPEG-1 or MPEG-2 (no extended bit stream)
011b: MPEG-2 (with extended bit stream)
100b: Linear PCM audio 101b: Linear PCM audio (including 2ch + 5ch, 2ch + 6ch, 2ch + 8ch)

(2) Quantization / DRC (Dynamic Range Control) information (2 bits b55, b54)
"11b" when the audio encoding mode is "000b"
When the audio encoding mode is “010b” or “011b”,
00b: Dynamic range control data does not exist in the MPEG audio stream. 01b: Dynamic range control data exists in the MPEG audio stream. 10b, 11b: Hold.-When the audio encoding mode is "100b" or "101b", stereo. 00b: 16 bits 01b: 20 bits 10b: 24 bits 11b: reserved for 2ch

(3) Sampling frequency fs (2 bits b53, b52)
00b: 48kHz for stereo 2ch
01b: 96 kHz
10b: 192 kHz
(4) Number of audio channels (3 bits b50 to b48)
000b: 1ch (monaural)
001b: 2ch (stereo)
010b: 3ch
011b: 4ch
100b: (stereo 2ch + 5ch)
101b: (stereo 2ch + 6ch)
110b: 7ch
111b: (stereo 2ch + 8ch)

  As shown in detail in FIG. 11, the ATS-AST-ATRT (ATS audio stream attribute table) shown in FIG. 10 has ATS-AST-ATR for each of audio streams # 0 to # 7, and ATS-AST-ATR. Are composed of 8 bytes (total of 64 bytes).

As shown in FIG. 11, the ATS-AST-ATR of one audio stream is 8 bytes (bits b63 to b0) similar to the audio title set menu audio stream attribute data (ATSM-AST-ATR) shown in FIG. And in addition to the attribute data (1) to (4),
(5) Multi-channel extension (1 bit b60)
(6) audio type (2-bit b59, b58);
(7) Audio application mode (2-bit b57, b56)
(8) Thinning information of the stream (AST) (2 bits b47, b46) and (9) Thinning information of only 1 channel of LFE (Low Frequency Effect) (2 bits b45, b44)
Of each data. And, in (7) audio application mode of this DVD audio disc,
11b: 2ch + surround mode is recorded, and both (8) the thinning information of the stream and (9) the thinning information of only the LFE 1ch are band information as 00b: full (1/1)
01b: Half (1/2)
10b: Quota (1/4)
Is recorded.

  However, (4) the number of audio channels in the ATSM-AST-ATR is always 2ch in the audio stream # 0, and the audio stream # 1 includes the front 3ch. That is, for example, when an audio signal of one title is recorded in 2 + 6 channels, a stereo signal of 2 channels is allocated to the audio stream # 0, and a front signal of 3 channels is allocated to the audio stream # 1 among the 6 channels, and a rear signal of 2 channels and 1 channel of LFE are allocated. Assign the signal to audio stream # 2. Then, both the audio manager information management table (AMGI-MAT) shown in FIG. 4 and the audio title set information management table (ATSI-MAT) shown in FIG. Is recorded.

When the 2 + 6 ch analog audio signal is sampled at, for example, the following sampling frequency fs and quantized with the following quantization bit number and recorded,
Stereo 2ch: 48kHz, 20bit Front 3ch: 96kHz, 16bit Rear 2ch, LFE1ch: 48kHz, 16bit (no thinning)
The audio title set menu / audio stream / attribute data (ATSM-AST-ATR) shown in FIG. 9 has an attribute of stereo 2ch (1) audio encoding mode 101b: linear PCM audio (including 2ch + 5ch, 2ch + 6ch, 2ch + 8ch).
(2) Quantization / DRC
01b: 20 bits (3) sampling frequency fs
00b: 48 kHz
(4) Number of audio channels 101b: (stereo 2ch + 6ch)
Is recorded.

The ATS-AST-ATR of the audio stream # 0 includes (1) audio encoding mode 101b: linear PCM audio (including 2ch + 5ch, 2ch + 6ch, and 2ch + 8ch).
(2) Quantization / DRC
01b: 20 bits (3) sampling frequency fs
00b: 48 kHz
(4) Number of audio channels 001b: 2ch (stereo)
(7) Audio application mode 11b: 2ch + surround mode (8) Thinning information of the stream 00b: Full (1/1)
(9) Thinning-out information only for LFE1ch 00b: Full (1/1)
Is recorded.

The ATS-AST-ATR of the audio stream # 1 includes (1) audio encoding mode 101b: linear PCM audio (including 2ch + 5ch, 2ch + 6ch, and 2ch + 8ch).
(2) Quantization / DRC
00b: 16 bits (3) sampling frequency fs
01b: 96 kHz
(4) Number of audio channels 010b: 3ch
(7) Audio application mode 11b: 2ch + surround mode (8) Thinning information of the stream 00b: Full (1/1)
(9) Thinning-out information only for LFE1ch 00b: Full (1/1)
Is recorded.

The ATS-AST-ATR of the audio stream # 2 includes (1) audio encoding mode 101b: linear PCM audio (including 2ch + 5ch, 2ch + 6ch, and 2ch + 8ch).
(2) Quantization / DRC
00b: 16 bits (3) sampling frequency fs
00b: 48 kHz
(4) Number of audio channels 010b: 3ch
(7) Audio application mode 11b: 2ch + surround mode (8) Thinning information of the stream 00b: Full (1/1)
(9) Thinning-out information only for LFE1ch 00b: Full (1/1)
Is recorded.

  Next, the A pack in which an audio stream is recorded and its control pack will be described. As shown in FIG. 12, the VCB unit is constituted by an arbitrary number of packs for 0.4 to 1.0 seconds, and the ACB unit is constituted by an arbitrary number of packs for 0.5 to 1.0 seconds. I have. 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 within the range of 0.5 to 1.0 second at the break of the index. The audio time (GOF: Group of Audio Frame unit) is indicated by the A-CONT pack, and its data position is determined by the audio frame number, the number of the first access unit pointer, and the number of frame headers. The A-pack immediately before the A-CONT pack does not force padding in units of 0.5 seconds of the audio time.

  Adjacent A-packs are arranged so that audio signals are related to each other. For example, in the case of stereo, an L-channel pack and an R-channel pack are arranged adjacently, and a multi-channel of 5/6/8 channel is used. In such a case, they are similarly arranged adjacently. The V pack is arranged adjacent to the A pack when displaying an image during reproduction of an audio signal. As shown in FIG. 13, the A-pack and the V-pack have a 4-byte pack start information for a 2034-byte user data (A data and V data) and a 6-byte SCR (System Clock Reference). ) Information, 3-byte Mux rate information, and 1-byte stuffing, and a total of 14-byte pack header is added (1 pack = 2048 bytes in total). In this case, the time of the A pack in the same title can be managed by setting the SCR information as the time stamp to be “1” in the first pack in the ACB unit so as to be continuous in the same title.

  On the other hand, as shown in FIG. 14, 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). ) It is composed of packets. The ACD packet includes a 6-byte packet header, a 1-byte substream ID, 636-byte ACD (audio character display) information as shown in detail in FIG. 15, and a 360-byte reserved area. The ASD packet includes a 6-byte packet header, a 1-byte substream ID, and a 1000-byte ASD (audio search data) as shown in detail in FIG.

  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" as shown in detail in FIG. Each of these areas is composed of a 93-byte name space area, two 93-byte free space areas, and a 15-byte data pointer area. For example, as shown in FIG. 6, data for displaying a song name in Japanese is arranged in one namespace area of the character “1” in the first language and the character “2” in the second language, and the other. In the name space area, data to be displayed in English is arranged. This 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 display size, display type, audio / video / SP distinction, stream, and the like. Characters are mandatory (mandatory), and bitmaps are optional (optional). The 12-byte language code indicates the language of the characters "1" and "2" in 2 bytes each 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 the language code, and indicates the presence / absence and type of the language of the 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. 15, the presence / absence of a data pointer, and the ID. The namespace is mandatory, and the title name, music name, and artist name must be described.

  As shown in detail in FIG. 17, the 1000-byte ASD (audio search data) has 16-byte general information, 8-byte current number (No.) information, 16-byte current time information, and 8-byte title. It is composed of set search information, 8-byte title search information, 404-byte track search information, 408-byte index search information, 80-byte highlight search information, and a 52-byte reserved area.

  The 8-byte current number information 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 16-byte current time information includes the playback time of the track (4 bytes: BCD), the remaining playback time of the track (4 bytes: BCD), the absolute time of the title (4 bytes: BCD), and the rest of the title. (4 bytes: BCD).

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

  The 408-byte index search information includes a track index and a sector number (4 bytes × 100), a first index number of the track (4 bytes), and a last index number of the track (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, the A-CONT pack for managing the audio signal of the succeeding A pack, such as the TOC information of the CD, is arranged at the head of the plurality of A packs. However, the recording capacity can be increased. The A-CONT pack can manage audio time, and the A-CONT pack can extract simple character information such as a song title related to audio data.

  Also, since TOC information such as a title, a start address, and a playing time is arranged in the A-CONT pack, even during audio reproduction, information according to a user operation is taken out from the A-CONT pack and reproduction is started. 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 playback device, and the information according to the operation of the user is stored in the memory. It is possible to immediately read and start reproduction. Also, since there is no need to store a large amount of information such as program chain information (PGCI) in DVD-Video, it is possible to efficiently manage the disk.

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

Also,
2. If there is image (V) data in the content,
For audio data,
In addition to the above (1) to (3),
(4) The title, the current time in the music, 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 become possible.
(2) Cueing, time search, and random access in video frame units become possible.
(3) Title, PTT, and cell time can be managed in real time.
(4) The current time and the remaining time in the PTT or the title can be displayed and managed in video frame unit time.

  The ACBU in FIG. 1B includes the A-CONT pack and the CONT pack, but may be configured so as not to include the V pack and the CONT pack 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 reproduction function can be simplified, so that the portable reproduction is possible. Anything suitable for the device can be provided.

  Next, a reproducing apparatus according to the present invention will be described with reference to FIG. On the DVD audio disk 1, data having the above structure is EFM-modulated and recorded in the form of pits. When music selection, reproduction, fast-forward, and stop operations are performed by the operation unit 18 or the remote control device 19, the control unit 23 controls the drive device 2 and the reproduction device 17 in accordance with the operations, and records on the DVD audio disk 1 during reproduction. The read pit data is read by the drive device 2 and then EFM demodulated.

  In the reproducing device 17, this signal is sent to the CONT pack detector 3 and the A-CONT pack detector 9. The CONT pack detecting section 3 detects the CONT pack in the reproduced data, sets the control parameters in the parameter section 8, and writes the V pack controlled by the CONT pack into the V pack buffer 4 sequentially. The user data (video signal, sub-picture information) in the V pack written in the V pack buffer 4 is packed by the buffer extracting unit 5 based on the SCR (see FIG. 13) in the V pack and in the CONT pack. Are extracted in the order of output time based on the PTS (Presentation Time Stamp), and then output as an analog video signal via the image converter 6, the D / A converter 7, and the video output terminals 15, 15 '.

  The A-CONT pack detecting section 9 detects the A-CONT pack in the reproduced data and sets the control parameters in the parameter section 14, and sequentially stores the A-pack controlled by the A-CONT pack in the A-pack buffer 10. Write. The user data (audio signal) in the A-pack written in the A-pack buffer 10 is sorted by the buffer extracting unit 11 in the pack order based on the SCR, and the current time of the audio search data ASD in the A-CONT pack (FIG. 17). ), And then output as an analog audio signal via the PCM converter 12, D / A converter 13, and audio output terminal 16. The display data (the audio character display information ACD shown in FIGS. 15 and 16) in the A-CONT pack is sent to the display signal generator 20 to generate a display signal. Or to the built-in character display unit 21.

  FIG. 20 is a block diagram functionally showing the configuration shown in FIG. The reproduction means 2 corresponds to the drive device 2 shown in FIG. 19, and the reproduction signal processing separation means A (9, 10, 11, 14) includes an A-CONT pack detection section 9, an A pack buffer 10, a buffer extraction section 11, and a parameter Corresponding to the section 14, the audio signal output means (12, 13) corresponds to the PCM conversion section 12 and the D / A conversion section 13, and the character information output means 20 corresponds to the display signal generation section 20. The reproduction signal processing / separating means V (3, 4, 5, 8) corresponds to the CONT pack detecting section 3, the V pack buffer 4, the buffer extracting section 5 and the parameter section 8, and includes a video signal output section and a sub picture information output section. The means (6, 7) correspond to the image converter 6 and the D / A converter 7. The control means 23 corresponds to the control unit 23.

  In FIG. 20, when a command signal for reproducing a target music is transmitted from the operation unit 18 or the remote control device 19, the control unit 23 transmits an address control information signal corresponding to the reproduction command to the reproducing unit 2. To reproduce the target music from the DVD audio disk 1. The reproduction signal processing separation means A separates the reproduction data and sends A-CONT information to the control means 23, sends an audio signal to the audio signal output means (12, 13), and sends character information to the character information output means 20. The reproduction signal processing / separation means V separates the reproduction data and sends the CONT information to the control means 23, and sends the video signal and the sub-picture information to the video signal means and the sub-picture information output means (6, 7), respectively.

  Next, a reproducing apparatus according to the second embodiment using TOC (Table Of Contents) information will be described. As shown in FIG. 21, a TOC as shown in detail in FIG. 22 is additionally recorded in a free area of AMGI (Audio Manager Information), and the reproducing apparatus accesses the TOC information to find the beginning of the music. Do. FIG. 22 shows, as an example, general TOC information recorded in a lead-in area of a CD, and the same information is recorded three times repeatedly. When recording on the DVD audio disk 1 of the present invention, the above-described operation may be repeated, or may not be repeated.

  Here, in the TOC information used in the CD, when point = 00 to 99, the absolute time at which each movement indicated by the numeral starts is represented by minutes (PMIN), seconds (PSEC) and frames (PFRAME). You. When point = A0, PMIN indicates the first movement, and PSEC = PFRAME = 0. When point = A1, PMIN indicates the last movement, and PSEC = PFRAME = 0. When point = A2, the absolute time at which the lead-out area starts is expressed in minutes (PMIN), seconds (PSEC) and frames (PFRAME). Therefore, the TOC information shown in FIG. 22 indicates that six music pieces (or six movements) are recorded on the DVD audio disc 1 (points = 01 to 06). This TOC information may be recorded in an empty area of ATSI (audio title set information) as shown in FIG. 23 instead of AMGI, and may be recorded in the ACD packet of the A-CONT pack shown in FIG. May be recorded in the reserved area (360 bytes).

  The TOC information is read at the start of reproduction and stored in the TOC information storage memory 14A shown in FIGS. 24 and 25. When the start reproduction of a song or a movement is designated, the TOC information storage memory 14A is referred to. To access the DVD audio disk 1. This TOC information is also recorded in an AMGI, ATSI or A-CONT pack, and further added to a lead-in area (TOC area 1a in the figure) of the innermost periphery of the DVD audio disc 1 as shown in FIG. The TOC detection means 24 may independently access the TOC area 1a at the start of reproduction and store the TOC area 1a in the TOC information storage memory 14A.

  Next, the AV synchronous reproduction process using the TOC information will be described with reference to FIGS. In FIG. 27, when the beginning or reproduction of a song or movement is designated, the TOC information corresponding to the designated position is referred to (step S1), and the cell and index locations are calculated based on the TOC information (step S2). ). Next, the location is searched (step S3), and when it is confirmed, synchronous reproduction of A and V is performed as shown in detail in FIG. 28 (step S4 → S5).

  In FIG. 28, the CONT pack is reproduced (step S11), the A-CONT pack is reproduced (step S12), and it is checked whether the time information in the CONT pack and the time information in the A-CONT pack are the same (step S12). S13). If they are not the same time, both the CONT pack and the A-CONT pack are adjusted by ± 1 pack (step S14), and the process returns to step S11 to reproduce the CONT pack and the A-CONT pack. In step S14, one of the CONT pack and the A-CONT pack may be adjusted by ± 1 pack and the pack may be reproduced.

  If the time information in the CONT pack and the A-CONT pack are the same in step S13, the A-pack controlled by the A-CONT pack is reproduced and the A-pack address (SCR information) is incremented by one (step S15). Then, the V pack controlled by the CONT pack is reproduced, and the V pack address (SCR information) is incremented by one (step S16). Next, it is checked whether or not the reproduction of the A-pack has been completed (step S17). If it has not been completed, the process proceeds to step S18, and if it has been completed, the process proceeds to step S20.

  In step S18, it is checked whether or not the reproduction of the V-pack has been completed. If the reproduction has not been completed, the process returns to step S13, and if completed, the process proceeds to step S19. In step S19, the next V pack controlled by the CONT pack is reproduced, the V pack address is incremented by one, and the process returns to step S13. In step S20, the next A-pack controlled by the A-CONT pack is reproduced, the A-pack address is incremented by one, and it is checked whether or not the reproduction of the V-pack is completed (step S21). If not, the process proceeds to step S22, and if completed, the process proceeds to step S23.

  In step S22, it is checked whether or not the A pack controlled by the A-CONT pack is the last pack. If it is not the last pack, the process returns to step S16. If it is the last pack, the process returns to step S12 to return to the next step S12. Play the A-CONT pack. In step S23, the next V pack controlled by the CONT pack is reproduced and the V pack address is incremented by one. Then, it is checked whether or not the end of the frame (EOF) has been reached (step S24). Returning to step S13, on the other hand, in the case of EOF, the AV synchronous reproduction processing ends. As described above, the audio data A and the video data V stored in the pack are reproduced in a seamlessly synchronized manner based on the time management information in the CONT pack and the A-CONT.

Next, a fourth embodiment will be described. FIG. 29 shows the basic format of a DVD-Van (video + audio navigation) disc as a fourth embodiment, FIG. 30 shows the ACBU and VCBU of the embodiment of FIG. 29, and FIG. 31 shows the ACD of the fourth embodiment. 32 shows another example of (audio character display) information. FIG. 32 shows an ASD (audio search data) of the fourth embodiment, FIG. 33 shows the CONT pack of FIG. 29 in detail, and FIG. 34 shows the PCI of FIG. FIG. 35 shows the PCI general information of FIG. 34 in detail, FIG. 36 shows the record information of FIG. 34 in detail, FIG. 37 shows the DSI of FIG. 33 in detail, and FIG. 38 shows the DSI general information of FIG. FIG. 39 shows the seamless reproduction information of FIG. 37 in detail, and FIG. 40 shows the seamless reproduction information by the seamless angle information of FIG. - illustrates the concept of angle change, FIG. 41 shows an example of the VOBU search information of FIG. 37, FIG. 42 shows in detail the VOBU search information of FIG. 37, FIG. 43 shows in detail the synchronization information in FIG. 37.
FIG. 44 shows the structure of the lead-in area of the disc of the first to fourth embodiments, FIG. 45 shows the control data block of FIG. 44 in detail, and FIG. 46 shows the physical format information of FIG. 35 in detail. Is shown.
FIG. 47 shows a disk reproducing apparatus according to the fourth embodiment, and FIG. 48 schematically shows the operation of the disk reproducing apparatus shown in FIG.

  By the way, in the first embodiment, the audio player uses ASD (audio search data) in the A-CONT pack shown in detail in FIG. 14 in order to control the reproduction of the A pack. Sometimes, it is based on the current number and current time, and when jump playback is performed, it is based on search information of title set search, title search, track search, index search, and highlight search.

  On the other hand, in the DVD-Van disc of the fourth embodiment, the basic format is roughly classified as shown in FIG. 29A so that the DVD-Van disc can be reproduced using various DVD players. (VMG), an audio manager (AMG), and a plurality of video title sets (VTS) and audio title sets (ATS). That is, the basic format of the DVD-Van disc includes both the DVD video disc shown in FIG. 1A and the DVD audio disc shown in FIGS. 1B and 29B. The AMG and ATS have the same functions as the AMG and ATS shown in FIG. 1B and FIG.

  Each of the VTS and the ATS includes a head VTS information (VTSI) and an ATS information (ATSI), one or more video content block sets (VCBS) and an audio content block set (ACBS), and a last VTSI. And ATSI. Each of the VCBSs is composed of a plurality of VCBs, while each of the ACBSs is composed of a plurality of ACBs. Each VCB is for one video title, and each ACB is correspondingly one audio title. Each VCB (one title) is constituted by a plurality of chapters, while each ACB (one title) is correspondingly constituted by a plurality of tracks. A chapter contains a part of title (PTT) and a track contains a part of title (PTT).

  Each of the chapters is constituted by a plurality of cells, while each of the tracks is correspondingly constituted by a plurality of indexes. Each of the cells is composed of a plurality of VCBU units (VCBU), while each of the indexes is correspondingly composed of a plurality of ACB units (ACBU). As shown in detail in FIG. 30, the VCB unit (VCBU) does not include the A-CONT pack, but is composed of 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 of 0.4 to 1.0 seconds at substantially the same interval as the VCBU, with the first A pack after the V pack at the head. Here, VCBU is also called VOBU in the DVD video standard.

  Since the ACBU does not include the A-CONT pack, the ACD packet and the ASD packet included in the A-CONT pack in the first embodiment are the AMG (audio manager) and the ATS (ATS) shown in FIG. Audio title set).

  Here, since the ACD packet of the first embodiment is provided in the A-CONT pack provided for each ACB unit (every 0.5 to 1.0 second), data for a large number of screens is stored. Although it can be accommodated, in the second embodiment, a DVD video disc and a DVD audio disc, such as VMG (video manager) and AMG (audio manager) and VTS (video title set) and ATS (audio title set), can be accommodated. Since both data are accommodated, the amount of data accommodated is limited, and accordingly, the data is accommodated with a relatively small amount of data, such as only the title name of each song or movement. Also, about one type of audio reproduction control information described in detail below may be stored.

  The ACD area in the ACD packet is configured to have data of the character "1" of the first language and the character "2" of the second language as in the first embodiment (FIG. 15). Alternatively, the data relating to the character “2” may be omitted as shown in FIG. 31 and a 48-byte general information area and a so-called “audio navigation” such as a song title as shown in FIG. 16 may be displayed. For example, a 294-byte area and a 294-byte audio reproduction control information area for the character “1” in one language may be used. The area of the character “1” is composed of a 93-byte name space area, two 93-byte free space areas, and a 15-byte data pointer area, as in the first embodiment.

  The content of the audio reproduction control information area is arbitrary, and is composed of, for example, 10 types of audio reproduction control information area (250 bytes) of 25 bytes each and a reserve area of 44 bytes. In one type of audio reproduction control information area, 20 bytes of graphic equalizer information, 3 bytes of level balance information and 2 bytes of reverberation additional information are arranged, and this information is selected by the user to control the sound quality of the audio signal. Is done. When the user reproduces the music arranged in the A-pack, the audio reproduction control information is set according to, for example, the genre (classical, jazz, rock, BGM) of the music, or even if the genre is the same. This data is recommended by a so-called professional mixer so that the sound quality at the time of reproduction is best according to the performance state, recording state, atmosphere, etc. of the music. When the number of channels of the audio signal is 6, the number of channels is reduced to 2 and the mixing coefficient is stored in the holding area so that stereo reproduction can be performed.

  Since the CONT pack is used when the A-pack is seamlessly reproduced, the ASD omits the 8-byte current number information and the 16-byte current time information in the first embodiment (FIG. 17) as shown in FIG. This is used as a reserved area (76 bytes). For this reason, fine display and reproduction control cannot be performed as in the first embodiment. However, as in the first embodiment, a disk that can be reproduced only by a DVD audio disk-dedicated player and cannot be reproduced by a DVD video disk-dedicated player has become widespread. It is possible to realize an effective audio disk in the transition period up to.

  Next, the configuration of the CONT pack will be described in detail with reference to FIG. The CONT pack is called a navigation pack or a so-called navigation (NV) pack in the DVD video standard, and includes a 14-byte pack header, a 24-byte system header, a PCI (Presentation Control Information) packet, and a DSI ( Data Search Information) packet. The PCI is called playback control information, and 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. 34 (total 986 bytes). The DSI packet is composed of a 6-byte packet header, a 1-byte substream ID, and DSI shown in detail in FIG. 37 (total 1024 bytes).

  The PCI data is navigation data for controlling the playback of the VOBU. As shown in detail in FIG. 34, the PCI general information (PCI GI) of 60 bytes, the non-seamless angle information (NSML AGLI) of 36 bytes, and the 694 bytes , And 189 bytes of record information (RECI).

The PCI general information is, as shown in detail in FIG.
A 4-byte "LV pack (= CONT pack) LBN" (NV PCK LBN);
A 2-byte "VOBU category" (VOBU CAT);
A 2-byte holding area;
4 bytes of “VOBU user operation control information” (VOBU UOP CTL);
A 4-byte "VOBU start PTM" (VOBU S PTM);
A 4-byte “VOBU end PTM” (VOBU E PTM);
A 4-byte "end PTM of sequence end in VOBU" (VOBU SESS PTM);
It consists of 4 bytes of “elapsed time in cell” (CELTM) and 32 bytes of reserved area.

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

  The non-seamless angle information (NSML AGLI) shown in FIG. 34 is information relating to a destination address when the angle is changed, and when the angle cell change is changed non-seamlessly, that is, when the seamless angle change flag is set to “ Effective only when "Non-seamless" is set. The highlight information (HLI) shown in FIG. 34 is information for highlighting one rectangular area in the sub-picture display area, and based on this information, the mixing ratio (contrast) between the video and the sub-picture in the specific rectangular area. ) Can be changed. The playback 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. 34 is, as shown in detail in FIG.
10-byte "ISRC of video data in video stream" (ISRC V);
10-byte “ISRC of audio data in decoding audio stream # 0” (ISRC A0);
10-byte "ISRC of audio data in decoding audio stream # 1" (ISRC A1);
10-byte “ISRC of audio data in decoding audio stream # 2” (ISRC A2);
10-byte "ISRC of audio data in decoding audio stream # 3" (ISRC A3);
10-byte "ISRC of audio data in decoding audio stream # 4" (ISRC A4);
10-byte "ISRC of audio data in decoding audio stream # 5" (ISRC A5);
10-byte "ISRC of audio data in decoding audio stream # 6" (ISRC A6);
10-byte "ISRC of audio data in decoding audio stream # 7" (ISRC A7);
10-byte "ISRC of SP data in SP stream # 0, # 8, # 16 or # 24" (ISRC SP0);
10-byte "ISRC of SP data in SP stream # 1, # 9, # 17 or # 25" (ISRC SP1);
10-byte "ISRC of decoding / SP data in SP stream # 2, # 10, # 18 or # 26" (ISRC SP2);
10-byte “ISRC of SP data in SP stream # 3, # 11, # 19 or # 27” (ISRC SP3);
10-byte "ISRC of decoding SP data in SP stream # 4, # 12, # 20 or # 28" (ISRC SP4);
10-byte "ISRC of SP data in SP stream # 5, # 13, # 21 or # 29" (ISRC SP5);
10-byte "ISRC of SP data in SP stream # 6, # 14, # 22 or # 30" (ISRC SP6);
10-byte "ISRC of decoding SP data in SP stream # 7, # 15, # 23 or # 31" (ISRC SP7);
1-byte "group of SP streams selected for ISRC" (ISRC SP SEL);
-Consists of an 18-byte reserved area.

The data search information (DSI) shown in FIG. 33 is navigation data for searching data and executing seamless reproduction of a VOBU. As shown in detail in FIG. 37, 32-byte DSI general information (DSI GI) When,
148 bytes of seamless playback information (SML PBI)
-54-byte seamless angle information (SML AGLI);
168 bytes of VOBU search information (VOBU SRI);
-144 bytes of synchronization information (SYNCI)
-Consists of a storage area of 471 bytes.

As shown in detail in FIG. 38, the DSI general information (DSI GI) includes: a 4-byte “SCR base of NV PCK” (NV PCK SCR);
A 4-byte "LV PCK LBN" (NV PCK LBN);
A 4-byte "VOBU end address" (VOBU EA);
A 4-byte “end address of the first reference picture of the VOBU” (VOBU 1STREF EA);
A 4-byte “end address of the second reference picture of the VOBU” (VOBU 2NDREF EA);
A 4-byte “end address of the third reference picture of the VOBU” (VOBU 3RDREF EA);
A 2-byte “VOBU ID number of VOBU” (VOBU VOB IDN);
A 1-byte reserved area,
A 1-byte “VOBU cell ID number” (VOBU C IDN);
-Consists of 4-byte "cell elapsed time" (CELTM).

As shown in detail in FIG. 39, the seamless playback information (SML PBI) shown in FIG. 37 includes a 2-byte “seamless VOBU category” (VOBU SML CAT),
A 4-byte "end address of the interleaved unit" (ILVU EA);
A 4-byte "start address of the next interleaved unit" (NXT ILVUSA);
2 bytes of “next interleaved unit size” (NXT ILVU SZ)
A 4-byte "start PTM of video in VOB" (VOB VS PTM);
A 4-byte "end PTM of video in VOB" (VOB VE PTM);
8 bytes × 8 “end PTM of audio in VOB” (VOB A STP PTM);
-8 bytes x 8 "VOB A GAP LEN" (audio gap length in VOB).

  The angle information for seamlessness shown in FIG. 37 is information on the destination address when the angle is changed as shown in FIG. 40, and when the angle change is performed seamlessly, that is, the seamless angle change flag is set to “seamless”. Only valid if

The VOBU search information (VOBU SRI) shown in FIG. 37 includes, as shown in FIG. 41, the beginning of the VOBU reproduced at 0.5 × n seconds before and after the reproduction start time of the VOBU including the present DSI in this cell. An address is described, and it is valid only in one cell. This information is shown in detail in FIG.
A 4-byte "head address of the next VOBU of the video data" (FWDI VIDEO);
A 4-byte “+240 VOBU head address and video presence flag” (FWDI 240);
4 bytes of “+120 VOBU start address and video presence flag” (FWDI 120);
4 bytes of “+60 VOBU start address and video presence flag” (FWDI 60);
A 4-byte “+20 VOBU start address and video presence flag” (FWDI 20);
A 4-byte "+15 VOBU head address and video presence flag" (FWDI 15);
A 4-byte “+14 VOBU head address and video presence flag” (FWDI 14);
A 4-byte "+13 VOBU head address and video presence flag" (FWDI 13);
A 4-byte "+12 VOBU start address and video presence flag" (FWDI 12);
A 4-byte “+11 VOBU head address and video presence flag” (FWDI 11);
A 4-byte “+10 VOBU start address and video presence flag” (FWDI 10);
A 4-byte “+9 VOBU head address and video presence flag” (FWDI 9);
A 4-byte “+8 VOBU head address and video presence flag” (FWDI 8);
A 4-byte “+7 VOBU start address and video presence flag” (FWDI 7);
A 4-byte “+6 VOBU start address and video presence flag” (FWDI 6);
A 4-byte “+5 VOBU start address and video presence flag” (FWDI 5);
A 4-byte "+4 VOBU head address and video presence flag" (FWDI 4);
A 4-byte “+3 VOBU head address and video presence flag” (FWDI 3);
A 4-byte “+2 VOBU start address and video presence flag” (FWDI 2);
A 4-byte "+1 VOBU start address and video presence flag" (FWDI 1);
4 bytes of “Next VOBU start address and video presence flag” (FWDI Next);
A 4-byte “previous VOBU head address and video presence flag” (BWDI Prew);
A 4-byte "-1 VOBU start address and video presence flag" (BWDI 1);
A 4-byte "-2 VOBU head address and video presence flag" (BWDI 2);
A 4-byte "-3 VOBU head address and video presence flag" (BWDI 3);
A 4-byte "-4 VOBU head address and video presence flag" (BWDI 4);
A 4-byte "-5 VOBU head address and video presence flag" (BWDI 5);
A 4-byte "-6 VOBU head address and video presence flag" (BWDI 6);
A 4-byte "-7 VOBU head address and video presence flag" (BWDI 7);
A 4-byte “−8 VOBU head address and video presence flag” (BWDI 8);
A 4-byte "-9 VOBU head address and video presence flag" (BWDI 9);
A 4-byte "-10 VOBU head address and video presence flag" (BWDI 10);
A 4-byte "-11 VOBU head address and video presence flag" (BWDI 11);
A 4-byte "-12 VOBU head address and video presence flag" (BWDI 12);
A 4-byte "-13 VOBU head address and video presence flag" (BWDI 13);
A 4-byte "-14 VOBU head address and video presence flag" (BWDI 14);
A 4-byte "-15 VOBU head address and video presence flag" (BWDI 15);
A 4-byte "-20 VOBU head address and video presence flag" (BWDI 20);
A 4-byte "-60 VOBU head address and video presence flag" (BWDI 60);
A 4-byte "-120 VOBU head address and video presence flag" (BWDI 120);
A 4-byte "-240 VOBU head address and video presence flag" (BWDI 240);
-Consists of 4-byte "VOBU head address before having video data" (BWDI VIDEO).

The synchronization information (SYNCI) shown in FIG. 37 is address information of audio data and sub-picture data reproduced in synchronization with the video data of the VOBU including the present DSI. As shown in detail in FIG. × 8 “address of target audio pack (A PCK)” (A SYNCA 0 to 7) and 4 bytes × 32 “VOBU head address for target sub-picture pack (SP PCK)” (SP SYNCA 0 to 31) It is configured.

Next, the first to fourth embodiments and DVD video disk identifiers will be described. As shown in FIG. 44, the recording area of the DVD is roughly composed of a lead-in area and a data area. Also, the lead-in area of the DVD includes all 00h blocks from the start of the lead-in to the sector number "02F000h",
-Two reference code blocks from the sector number "02F000h" to the sector number "02F020h";
-All 00h blocks for 30 blocks from the sector number "02F020h" to the sector number before "02F200h";
Control data blocks for 192 blocks from the sector number "02F200h" to the sector number before "02FE00h";
It is composed of all 00h blocks of 32 blocks from the sector number "02FE00h" to the sector number "030000h".

  Also, ISO 9660 and micro UDF (universal disk format) data are recorded from the beginning of the data area (sector number "030000h"), and then an audio title set (TS), a video TS, a computer TS, and the like are recorded. You.

  As shown in FIG. 45, the control data block in the above-mentioned lead-in area is composed of sectors of physical format information, sectors of disk manufacturing information, sectors of copyright information, and sectors of TOC information. As shown in FIG. 46, the sectors of the physical format information include a book type and a part version area, a disc size and a minimum read out rate area, a disc structure area, a recording density area, and a data density area. It is composed of areas such as area allocation.

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

  Therefore, according to the book type and the part version, a disc identifier indicating “DVD-ROM-audio disc” is described in the disc according to the first to third embodiments, and the disc according to the fourth embodiment is described. Describes a disc identifier indicating “DVD-ROM-Van disc”. Although the lead-in area of the “DVD-ROM-pure video disc” does not have TOC information such as information on the beginning of a song or movement, the “DVD-ROM- This TOC information is provided in the lead-in area of the "audio disc" and the "DVD-ROM-Van disc" of the fourth embodiment. Note that the TOC information conforms to the configuration in FIG. 22, but includes simplified playback information, and is sometimes called SAPP to distinguish it from the information.

  Next, a disc reproducing apparatus according to a fourth embodiment will be described with reference to FIGS. Here, the drive device 2 is configured to be able to read DVDs and CDs having different thicknesses as the disk 1. In the case of “DVD-ROM-pure video disk” and “DVD-ROM-Van disk”, the switch SW1 sets the CONT pack detector 3 and the TOC information storage memory in the case of “DVD-ROM-pure video disk” and “DVD-ROM-Van disk”. The switch is switched to the 8A side, the switch SW2 is switched to the buffer take-out unit 5, and the switch SW3 turns on the power to the video processing units 3 to 8. On the other hand, in the case of another disk, the switch SW1 is switched to the CONT pack, the A-CONT pack detecting section 9 ', the TOC information storage memory 14A and the CD reproducing section 88, the switch SW2 is switched to the buffer extracting section 11, and the switch SW2 is switched. SW3 is controlled to turn off the power to the video processing units 3 to 8.

  First, the identifier is read from the disk 1 to determine the type of the disk 1 (steps S30 and S31). In the case of a DVD video disk, the reproduction is performed (steps S31 and S32). In this case, in FIG. 47, the reproduction signal is sent to the CONT pack detection unit 3 via the switch SW1, and the CONT pack detection unit 3 detects the CONT pack in the reproduction data, sets the control parameter in the parameter unit 8, and , The V pack (and the SP pack) controlled by the CONT pack and the A pack are sequentially written to the A and V pack buffers 4 '.

  The user data (video signal, sub-picture information) in the V pack and the SP pack written in the A and V pack buffers 4 'are packed in the pack order by the buffer extracting unit 5 based on the SCR (see FIG. 13) in the V pack. Also, they are extracted in the order of output time based on the PTS (Presentation Time Stamp) in the CONT pack, and then output as analog video signals via the image converter 6, the D / A converter 7, and the video output terminals 15, 15 '. Is done. The user data (audio signal) in the A pack written into the A and V pack buffers 4 'is extracted by the buffer extracting unit 11 in the order of packs based on the SCR and in the order of output time based on the CONT pack. The signal is output as an analog audio signal via the switch SW2, the PCM converter 12, the D / A converter 13, and the audio output terminal 16.

In the case of a DVD-Van disc, the CONT pack and the TOC information of the reproduction signal are sent to the CONT pack detector 3 and the TOC information storage memory 8A via the switch SW1. The V-pack and the A-pack are reproduced in the same manner as in the case of a DVD video disc, but the beginning of a song or movement is performed based on the TOC information.
Further, in the case of a DVD-Avd (audio + AV data) disk or a DVD audio disk, the CONT pack or A-CONT pack of the reproduction signal and the TOC information are respectively supplied via the switch SW1 to the CONT pack or A-CONT pack detecting section 9. 'Is sent to the TOC information storage memory 14A. Then, the CONT pack or A-CONT pack detecting section 9 'detects the CONT pack or A-CONT pack in the reproduced data, sets the control parameters in the parameter section 14, and is controlled by the CONT pack or A-CONT pack. A packs are sequentially written to the A pack buffer 10.

The user data (audio signal) in the A-pack written in the A-pack buffer 10 is sorted by the buffer extracting unit 11 in the pack order based on the SCR, and the current time of the audio search data ASD in the A-CONT pack (FIG. 17). ), And then output as an analog audio signal via the switch SW2, the PCM converter 12, the D / A converter 13, and the audio output terminal 16. The display data (the audio character display information ACD shown in FIGS. 15 and 16) in the A-CONT pack is sent to the display signal generator 20 to generate a display signal. Or to the built-in character display unit 21.
When a DVD-Advd disc or DVD audio disc without a CONT pack or an A-CONT pack contains V data (still image), the switch SW1 is selected as in the case of the DVD-Van disc. In this case, TOC information and information of a management area are used for reproduction.

  In the case of a CD, a reproduction signal is sent to the CD reproduction unit 88 via the switch SW1 and output as an analog audio signal.

  Therefore, according to the fourth embodiment, the number of A-packs in the VOB unit is larger than that of the V-pack. Therefore, when the V-pack is reproduced on the display, a still image or a moving image with little motion is generated. A can be reproduced based on the CONT pack (NV pack) of the DVD video standard, so that various DVDs such as a DVD video disc can be reproduced.

FIG. 49 shows the text data manager (TXTDT-MG) in the AMGI shown in FIG. 4 in detail, FIG. 50 shows the audio text data language units (ATXTDT-LU) # 1 to #n in FIG. 49 in detail, FIG. 51 shows the audio text data (ATXTDT) of FIG. 50 in detail, and these data are recorded in the AMGI of the Van disk of the fourth embodiment. As shown in FIG. 49, the text data manager (TXTDT-MG)
Audio text data manager information (ATXTDT-MGI);
N audio text data language unit search pointers (ATXTDT-LU-SRP) # 1 to #n and n audio text data language units (ATXTDT-LU) # 1 shown in detail in FIG. To #n.

Each of the audio text data language units (ATXTDT-LU) # 1 to #n, as shown in FIG.
Audio text data language unit information (ATXTDT-LUI);
Volume item audio text search pointer search pointer (IT-ATXT-SRP-SRP-VLM)
9 items for ATT-SRPT based albums # 1 to # 9 Audio text search pointer Search pointer (IT-ATXT-SRP-SRP-TTG # 1 to # 9-ATT -SRPT);
Nine items for albums # 1 to # 9 based on AOTT-SRPT Audio text search pointer Search pointer (IT-ATXT-SRP-SRP-TTG # 1- # 9-AOTT-SRPT) And audio text data (ATXTDT) shown in detail in FIG.

Audio text data (ATXTDT) includes audio text data information (ATXTDTI) as shown in FIG.
N item audio text search pointers # 1 to #n (IT-ATXT-SRP- # 1 to #n);
-It is composed of n item audio texts (IT-ATXT # 1 to #n).

  Utilizing such a data structure, information about audio data such as an album commentary is stored as text data, and this text data is stored in an area different from the video text data. FIG. 52 shows processing when the disc 1 on which such audio text data is recorded is set in the drive device 1 of the reproducing apparatus shown in FIG. 47 and is reproduced. Is operated, the audio text data of the album #i being reproduced at the time of the operation (or the album #i corresponding to the volume before the reproduction) is displayed at the time of the operation. In this case, the switches SW1 to SW3 of the reproducing device are switched according to whether the disc is a DVD-Van disc or a DVD-audio disc, as described above. In the case of a DVD-Van disc, a video signal of text data is supplied to the video output terminal 15. On the other hand, in the case of a DVD-Audio disc, text data is output via a character information output terminal 22 or displayed on a character display unit 21.

  In FIG. 52, first, a language unit #i designated via the operation unit 18 is selected and read (step S1), and then the audio text data language unit #i is displayed (step S2). If the next specification is made in step S3, i is incremented when the + key is operated (steps S4 and S5), and i is decremented when the-key is operated (steps S6 and S7). If the number k is specified, i = k is set (step S8). Next, returning to step S2, the audio / text / data language unit #i is displayed.

  Next, a process of displaying the above audio text data in different languages will be described. 53 shows in detail the audio manager menu PGCI unit table (AMGM-PGCI-UT) shown in FIG. 4, FIG. 54 shows the audio manager menu language unit in FIG. 53 in detail, and FIG. FIG. 56 shows an example of the audio manager menu language unit shown in FIG. 53.

As shown in FIG. 53, the audio manager menu PGCI unit table (AMGM-PGCI-UT) includes: audio manager menu PGCI unit table information (AMGM-PGCI-UTI);
N audio manager menu language units search pointers (AMGM-LU-SRP # 1 to #n) and n audio manager menu language units (AMGM-LU # 1 to #GM) shown in FIG. n).

As shown in FIG. 54, each of the audio manager menu language units (AMGM-LU # 1 to #n) includes: • AMGM-LU information (AMGM-LUI);
N AMGM-PGCI search pointers # 1 to #n (AMGM-PGCI-SRP # 1 to #n) and n audio manager menu program chain information # 1 to #n (AMGM-PGCI # 1 to #n).

  With such an audio manager menu language unit, for example, as shown in FIG. 55, title menus of different languages such as Japanese and English for the same title are written as sub-pictures on a DVD video disc or DVD-Van disc 1. The playback device performs the display processing as shown in FIG. In this case, the switches SW1 to SW3 of the reproducing device are switched to the side for reproducing the DVD video disk or DVD-Van disk as described above, and the sub picture signal of the title menu is output via the video output terminal 15.

  In FIG. 56, first, the language unit #i specified via the operation unit 18 is selected and read (step S11), and then the audio manager menu #i is displayed (step S12). Since this menu is composed of several chains, if the next chain is specified, the next chain is specified (step S13 → S14), and then the process returns to step S12 to return to the audio manager of that chain. Display menu #i.

  If the next chain has not been designated, it is determined whether or not the next menu has been designated as in the case shown in FIG. 52 (step S13 → S15). If the next menu is not specified, the process returns to step S13. On the other hand, if the next menu is specified, i is incremented when the + key is operated according to the specification (steps S16 and S17). ,-Key operation, i is decremented (steps S18, S19), and when the number k is designated, i = k is set (step S20). Next, the process returns to step S12 to display the audio manager menu #i.

In the case of the DVD-Van disk of the fourth embodiment, the audio manager information (AMGI) shown in FIG. 4 is replaced by an audio manager information management table (AMGI-AMGI) as shown in FIG. MAT)
An audio title search pointer table (ATT-SRPT); an audio only title search pointer table (AOTT-SRPT);
An audio manager menu composed of a PGCI unit table (AMGI-PGCI-UT) and an audio text data manager (ATXTDT-MG), and PTL-MAIT and AMGM-C-ADT shown in FIG. , AMGM-ACBU-ADMAP may be omitted.

FIG. 2 is an explanatory diagram showing an embodiment of a DVD-video format and a DVD-audio format according to the present invention. FIG. 2 is an explanatory diagram showing a format of an audio manager (AMG) of FIG. 1 in detail. FIG. 2 is an explanatory diagram showing a format of an audio title set (ATS) of FIG. 1 in detail. FIG. 3 is an explanatory diagram showing the format of audio manager information (AMGI) in FIG. 2 in detail. FIG. 5 is an explanatory diagram showing a format of an audio title set attribute table (ATS-ATRT) in FIG. 4 in detail. FIG. 6 is an explanatory diagram showing the format of the audio title set attribute data (ATS-ATR) in FIG. 5 in detail. FIG. 4 is an explanatory diagram showing the format of the audio title set information (ATSI) of FIG. 3 in detail. FIG. 8 is an explanatory diagram showing the format of the audio title set information management table (ATSI-MAT) of FIG. 7 in detail. FIG. 9 is an explanatory diagram showing the audio title set menu audio stream attribute data (ATSM-AST-ATR) of FIG. 8 in detail. FIG. 9 is an explanatory diagram showing in detail a format of an audio title set audio stream attribute table (ATS-AST-ATRT) of FIG. 8. FIG. 11 is an explanatory diagram showing in detail attribute data (ATS-AST-ATR) of each audio stream in FIG. 10. FIG. 2 is an explanatory diagram showing an audio content block unit (ACBU) of FIG. 1. FIG. 13 is an explanatory diagram showing the formats of the audio pack and the video pack in FIG. 12 in detail. FIG. 13 is an explanatory diagram showing the format of the audio control (A-CONT) pack of FIG. 12 in detail. FIG. 15 is an explanatory diagram showing a format of an audio character display (ACD) area in FIG. 14 in detail. FIG. 16 is an explanatory diagram illustrating an example displayed by the namespace information of FIG. 15. FIG. 15 is an explanatory diagram showing a format of an audio search data (ASD) area in FIG. 14 in detail. FIG. 9 is an explanatory diagram showing a modification of the audio content block unit in FIG. 1. FIG. 1 is a block diagram showing a DVD-Audio disc reproducing apparatus according to the present invention. FIG. 20 is a block diagram functionally showing the playback device of FIG. 19. It is an explanatory view showing the format of audio manager information (AMGI) in a 2nd embodiment in detail. FIG. 22 is an explanatory diagram showing the TOC information of FIG. 21 in detail. It is an explanatory view showing in detail the format of audio title set information (ATSI) in a modification of the second embodiment. FIG. 11 is a block diagram illustrating a DVD-audio disc playback device according to a second embodiment. FIG. 25 is a block diagram functionally showing the playback device of FIG. 24. It is a block diagram showing TOC information and a reproducing device in a 3rd embodiment. It is a flowchart for explaining AV synchronous reproduction | regeneration processing. It is a flowchart for explaining AV synchronous reproduction | regeneration processing. It is an explanatory view showing a basic format of a DVD-Van disc as a fourth embodiment. FIG. 30 is an explanatory diagram showing an ACBU and a VCBU of the embodiment in FIG. 29. It is an explanatory view showing other examples of ACD (audio character display) information of a 4th embodiment. It is an explanatory view showing ASD (audio search data) of a 4th embodiment. FIG. 30 is an explanatory diagram showing the CONT pack of FIG. 29 in detail. FIG. 34 is an explanatory diagram showing the PCI data of FIG. 33 in detail. FIG. 35 is an explanatory diagram showing the PCI general information of FIG. 34 in detail. FIG. 35 is an explanatory diagram showing the record information of FIG. 34 in detail. FIG. 34 is an explanatory diagram showing the DSI in FIG. 33 in detail. FIG. 38 is an explanatory diagram showing the DSI general information of FIG. 37 in detail. FIG. 38 is an explanatory diagram showing the seamless playback information of FIG. 37 in detail. FIG. 38 is an explanatory diagram showing a concept of seamless angle change based on seamless angle information of FIG. 37. 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. 37 in detail. It is explanatory drawing which shows the synchronization information of FIG. 37 in detail. It is explanatory drawing which shows the structure of the lead-in area of 1st-4th embodiment. FIG. 45 is an explanatory diagram showing the control data block of FIG. 44 in detail. FIG. 36 is an explanatory diagram showing the physical format information of FIG. 35 in detail. FIG. 14 is a block diagram illustrating a disk reproducing device according to a fourth embodiment. 15 is a flowchart illustrating a reproduction process of the disc reproduction device according to the fourth embodiment. It is explanatory drawing which shows the text data manager (TXTDT-MG) in AMGI of 4th Embodiment in detail. FIG. 50 is an explanatory diagram showing audio text data language units (ATXTDT-LU) # 1 to #n in FIG. 49 in detail. FIG. 51 is an explanatory diagram showing the audio text data (ATXTDT) of FIG. 50 in detail. It is a flow chart which shows display processing of audio text data of a 4th embodiment. It is an explanatory view showing an audio manager menu PGCI unit table (AMGM-PGCI-UT) of a fourth embodiment in detail. FIG. 54 is an explanatory drawing showing in detail the audio manager menu language unit of FIG. 53. FIG. 54 is an explanatory diagram showing an example of the audio manager menu language unit of FIG. 53. FIG. 54 is a flowchart showing the display processing of the audio manager menu language unit of FIG. 53. It is explanatory drawing which shows the modification of AMGI of 4th Embodiment.

Explanation of reference numerals

A audio pack (first pack)
A-CONT audio control pack (second pack)
V video pack (third pack)
CONT Video Control Pack (4th Pack)
1 DVD audio disk 3 CONT pack detection unit (constitutes second playback means together with V-pack buffer 4, buffer extraction unit 5, image conversion unit 6, D / A conversion unit 7, and parameter unit 8)
4 V-pack buffer 5, 11 Buffer extraction unit 6 Image conversion unit 7, 13 D / A conversion unit 8, 14 Parameter unit 9 A-CONT pack detection unit (A-pack buffer 10, buffer extraction unit 11, PCM conversion unit 12, The D / A conversion unit 13 and the parameter unit 14 constitute a first playback unit.)
Reference Signs List 10 A pack buffer 12 PCM conversion unit 14A TOC information storage memory

Claims (2)

The recording region of the auxiliary signal and the recording region of the main signal are arranged continuously, and at least a disk identifier for identifying a disk in the recording region of the auxiliary signal,
In the recording area of the main signal,
A multi-channel analog audio signal is allocated to a front-only channel group of the multi-channel and a rear and LFE channel group, and the sampling frequency is different for each of the front-only channel group and the rear and LFE channel groups. The digital audio signal is sampled and recorded as a digital audio signal quantized with the number of quantization bits for each of the front-only channel groups and the rear and LFE channel groups, and further, the same or different quantization bits as the multi-channel. An audio pack quantized by a number and recorded as a two-channel digital audio signal for stereo;
An audio title composed of the audio pack;
An audio title set including the audio title;
A quantization control information area in which the sampling frequency and the number of quantization bits for each group of the front only channel group and the rear and LFE channel groups of the digital audio signal recorded in the audio pack are recorded;
A title search information area in which search information for searching for the title of the digital audio signal is recorded;
An audio manager including an area (AMGM-LU) of an audio manager menu language unit in which search information (AMGM-PGCI-SRP # 1 to #n; n is an integer) for searching the menu of the title is recorded. -Menu information management area (AMGM-PGCI-UT)
An audio manager information (AMGI) including the title search information area and the audio manager menu information management area (AMGM-PGCI-UT);
An audio manager (AMG) including the audio manager information (AMGI);
Audio disc recorded in a predetermined format. An audio disc reproducing apparatus for reproducing a signal recorded on an audio disc according to claim 1,
Means for identifying a disk based on the disk identifier;
If the audio disk is identified, the digital audio signal is recorded on the quantization control information area based on the sampling frequency and the number of quantization bits of the front only channel group and the rear and LFE channel groups. Means for D / A converting digital audio signals of the channels of the front only channel group and the rear and LFE channel groups recorded in the audio pack;
Means for searching and playing the menu of the title based on the audio manager menu language unit;
Means for searching for and playing back the title based on the search information,
Audio disc reproducing apparatus having the same.

Images