JP2000003561A - Audio disk, and encoding device, decoding device and transmission method for audio signal, and recording medium for computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the managing of real time by recording audio signals with a data structure having audio tytle sets(ATS) and still tytle picture sets(SPS) including plural audio objects(AOB). SOLUTION: The format of a DVD audio is consisting of areas of an audio manager(AMG) and plural audio tytle sets(ATS) and the ATS is consisting of leading ATS information(ATSI), audio content block sets succeeding to the information and final ATSI. AT the leading of plural A packs, TOC information such as title, start address, playing time and so forth are arranged in an A-CONT pack for managing following audio signals. The TOC information are arranged also in the audio manager information(AMGI) and the audio tytle sets information(ATSI).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an audio disk, an audio signal encoding apparatus, a decoding apparatus, a transmission method, and a computer program recording medium.

[0002]

2. Description of the Related Art 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.

[0003]

SUMMARY OF THE INVENTION However, DVD
In the following (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.

[0004] In addition, since audio users have a wider range of uses than video, a simple reproduction method is required by providing a TOC (table of contents) area like a CD. However, for DVD-Video, the navigation control pack (CONT
) And a plurality of video (V) packs and audio (A) packs to form a video content block unit and control the reproduction of the V and A packs by the CONT pack. There is a problem that playback cannot be performed easily 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, it is difficult to manage the real time because the continuity of the audio signal is more important than that of video. There is a problem that is.

Accordingly, the present invention provides an audio disc and an audio signal which can be easily reproduced for the user when mainly recording an audio signal and which is easy to use, and which can simplify real time management. It is an object to provide an encoding device, a decoding device, a transmission method, and a recording medium of a computer program.

[0007]

The present invention achieves the above object by providing a first pack having audio data as real data and a second pack having real-time information data on audio data as real data. Types of audio objects (A
OB), and a still picture set (SPS) is formed by a third pack having still picture data relating to audio data as actual data. That is, according to the present invention, there is provided an audio title set (ATS) including a plurality of audio objects (AOB) and a still picture set (SPS), wherein the AOB includes only a first pack having audio data as actual data. AOB composed of
And a second AO comprising the first pack and a second pack having real-time information data on the audio data as actual data.
B, and the SPS includes still picture data related to the audio data.
An audio disc is provided on which a data structure having packs is recorded.

According to the present invention, claims 1 to 28 are also provided.
An apparatus for encoding an audio signal comprising means for formatting into a data structure according to any one of the preceding claims. According to the present invention, there is also provided an audio signal decoding device comprising means for decoding a data structure according to any one of claims 1 to 28. According to the present invention, there is also provided a method of transmitting an audio signal, characterized by transmitting the data structure according to any one of claims 1 to 28 via a recording medium or a communication medium. According to the invention, there is also provided a recording medium of a computer program describing an encoding method comprising the step of formatting into a data structure according to any one of claims 1 to 28. According to the present invention, there is further provided a recording medium of a computer program describing a decoding method having a step of decoding a data structure according to any one of claims 1 to 28.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 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. Audio title set (ATS) in Fig. 1
FIG. 4 is an explanatory diagram showing the format of the audio manager information (AMGI) shown in FIG. 2 in detail, and FIG. 5 is an audio title set attribute table (ATS-A) shown in FIG.
FIG. 6 is an explanatory diagram showing the format of the audio title set attribute data (ATS-ATR) of FIG. 5 in detail, and FIG. 7 is a diagram showing the format of the audio title set information (ATSI) of FIG. FIG. 8 shows the audio title set information management table (ATSI-MA) shown in FIG.
FIG. 9 is a diagram showing the format of the audio title set menu, audio stream, and attribute data (ATSM-AST-AT) shown in 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 attribute data of each audio stream of FIG. (ATS-AST-A
FIG. 4 is an explanatory diagram showing TR) in detail.

FIG. 12 is an explanatory diagram showing the audio content block unit (ACBU) of FIG. 1, and FIG.
FIG. 14 is an explanatory diagram showing the format of the audio pack and the video pack of FIG. 12 in detail, FIG. 14 is an explanatory diagram showing the format of the audio control (A-CONT) pack of FIG. 12 in detail, and FIG. FIG. 16 is an explanatory diagram showing the format of the area in detail, FIG. 16 is an explanatory diagram showing an example displayed by the namespace information of FIG. 15, FIG. 17 is an explanatory diagram showing the format of the audio search data (ASD) area in FIG. FIG. 18 is an explanatory diagram showing a modification of the audio content block unit of FIG.

Here, the DVD-audio disc of this description has two stereo channels and a 5/6/8 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. Also, it is considered that when this transition period has elapsed, only the multi-channel signal of 5/6/8 channel will be recorded. Even when only a multi-channel signal is recorded, a two-channel signal can be generated from the multi-channel signal by a downmix coefficient during reproduction. The generated two-channel signal is positioned as simple reproduction.

FIGS. 1A and 1B show DVD-video and DVD-audio formats, respectively.
The VD-audio format is compatible with DVD-Video, though the area name is different. First, the DVD-video format is roughly divided into a video manager (VMG) at the head and each area of a plurality of video title sets (VTS) following the format.
The audio format is correspondingly constituted by an audio manager (AMG) shown in detail in FIG. 2 and each area of a plurality of audio title sets (ATS) following the AMG as shown in detail in FIG.

[0013] 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 (A
CBS) and the last ATSI. AT
In the SI, the performance time of each song in the ACBS is set in real time. In the present invention, menu information for displaying a menu screen is recorded in the first ACBS. This is similar to DVD video, and will not be described.

Each of the VCBSs is constituted by a plurality of VCBs, while each of the ACBSs is constituted by a plurality of ACBs. Each VCB has one video title (Ti
tre), and each ACB is correspondingly one audio title. 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). Chapters include part of title (PTT),
The track contains a part of title (PTT).

Each of the chapters includes a plurality of cells (CELL).
On the other hand, each of the tracks is correspondingly constituted by a plurality of indexes. Each of the cells has a plurality of VCB units (VCBU)
On the other hand, each index is correspondingly constituted by a plurality of ACB units (ACBU). Each of the VCB unit and ACB unit is
Each pack 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 an audio (A) pack, a plurality of video (V) packs, and a sub-picture (SP) pack.
Each of the ACB units has a corresponding audio control pack (A-CONT pack) at the beginning.
, 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, the T of the CD is stored.
Information for managing a subsequent A-pack audio signal, such as OC information, is arranged. A pack contains audio data, and V pack contains video data,
For example, closed caption (CC) data other than audio data is arranged.

As shown in FIG. 2, the AMG (audio manager) includes: an audio manager information (AMGI) shown in detail in FIG. 4; an audio content block set (AMGM-ACBS) for an AMG menu; Has AMGI. AMGM-AC
The BS has presentation control information (PCI) and data search information (DSI) as control information.

As shown in FIG. 3, ATS (audio title set) includes: audio title set information (ATSI) shown in detail in FIG. 7; audio content block set (ATSM-ACBS) for ATS menu; It has an audio content block set (ATSA-ACBS) for titles, and ATSI for backup. ATSM-AC
The BS and the ATSA-ACBS are both P
Has CI and DSI.

The AMGI (Audio Manager Information) is shown in detail in FIG. 4 as follows: An AMGI management table (AMGI-MA)
T) and a title search pointer table (T-SRPT)
Audio manager menu PGCI unit table (AMGM-PGCI-UT) Parental management information table (PTL-MAIT) Audio title set attribute table (ATS-ATRT) shown in detail in FIG. A text data manager (TXTDT-MG); an audio manager menu cell (index)
An address table (AMGM-C-ADT); an audio manager menu; an audio content block unit; and an addressless map (AMGM-C).
ACBU-ADMAP).

The ATS-ATRT (audio title set attribute table) is shown in detail in FIG. 5, as follows: audio title set attribute table information (ATS-ATRTI); and audio titles of a plurality (n) of ATSs. Set attribute search pointer (ATS-ATR-
SRP # 1 to #n), and audio title set attribute data (ATS-ATR- # 1 to #n) of each of a plurality (n) of ATSs as shown in detail in FIG.

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

The ATSI (ATS information) shown in FIG. 3 is shown in detail in FIG. 7. The audio title set information management table (ATSI-MA) shown in FIG.
T), audio title set, part of title, search pointer table (ATS-PTT-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-C)
ACBU-ADMAP) Audio title set cell address table (ATS-C-ADT) Audio title set Audio content block unit address map (ATS-ACBU-
ADMAP).

The ATSI-MAT (audio title set information management table) shown in FIG. 7 includes: ATS-ID (identifier), ATS-EA (end address), and ATSI- EA, VERN (DVD audio specification version number), ATS-CAT (category), ATSI-MAT-EA, ATSM-ACBS-SA (start address), ATSA-ACBS-SA ATS-PTT-SRPT-SA, ATS-PGCIT-SA, ATSM-PGCI-UT-SA, ATS-TMAP-SA, ATSM-C-ADT-SA, ATSM -ACBU-ADMAP-SA;-ATSM-A as detailed in FIG. ST-ATR
(ATSM audio stream attributes)
ATS-AST-Ns (the number of ATS audio streams); ATS-AST-ATRT as detailed in FIG.
(ATS audio stream attribute table).

The ATSM-AST-ATR is composed of 8 bytes (bits b63 to b0) as shown in detail in FIG. To (4) are allocated (the other bits are reserved).

(1) Audio encoding mode (3 bits b63 to b61) 000b: Dolby AC-3 010b: MPEG-1 or MPEG-2 (without extended bit stream) 011b: MPEG-2 (with extended bit stream) 100b : Linear PCM audio 101b: Linear PCM audio (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"-"010b" or "10b" when the audio encoding mode is "000b" 011
In the case of "b", 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-The audio encoding mode is "100b", "101"
"b" for stereo 2ch 00b: 16 bits 01b: 20 bits 10b: 24 bits 11b: Reserved

(3) Sampling frequency fs (2 bits b53, b52) 00b: 48 kHz 01b: 96 kHz 10b: 192 kHz for two stereo channels (4) Number of audio channels (3 bits b50 to b4)
8) 000b: 1ch (monaural) 001b: 2ch (stereo) 010b: 3ch 011b: 4ch 100b: (stereo 2ch + 5ch) 101b: (stereo 2ch + 6ch) 110b: 7ch 111b: (stereo 2ch + 8ch)

ATS-AST-ATRT shown in FIG.
The (ATS audio stream attribute table) has ATS-AST-ATR for each of audio streams # 0 to # 7, as shown in detail in FIG.
Each of the TS-AST-ATRs is composed of 8 bytes (a total of 64 bytes).

ATS-A of one audio stream
As shown in FIG. 11, the ST-ATR includes an audio title set menu, an audio stream,
It is composed of 8 bytes (bits b63 to b0) similar to the attribute data (ATSM-AST-ATR). In addition to the attribute data (1) to (4), (5) Multi-channel extension (1 bit b
(6) Audio type (2-bit b59, b58)
And (7) audio application mode (2-bit b
57, b56), (8) thinning information (2 bits b47, b46) of the stream (AST), and (9) thinning information (2 bits b45, b44) of only one channel of LFE (Low Frequency Effect). Having. 11b: 2ch + surround mode is recorded in (7) audio application mode of this DVD audio disc, and (8) the thinning information of the stream and (9) the thinning information of only LFE1ch are both used in the band. 00b: full (1/1) 01b: half (1/2) 10b: quarter (1/4) is recorded as information.

However, the (4) number of audio channels in the ATSM-AST-ATR is always 2ch for 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 + 6ch, a stereo signal of 2ch is converted to an audio stream # 0.
, And 3 out of 6 front signals are assigned to audio stream # 1, and 2 ch rear signals and LFE
One channel signal is assigned to audio stream # 2. 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 2 ch: 48 kHz, 20-bit front 3 ch: 96 kHz, 16 bits Rear 2 ch, LFE 1 ch: 48 kHz, 16 bits (no thinning) Audio title set menu audio stream attribute data (ATSM-A) shown in FIG.
ST-ATR) has attributes of stereo 2ch. (1) Audio encoding mode 101b: Linear PCM audio (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 of audio stream # 0
For AST-ATR: (1) Audio encoding mode 101b: Linear PCM audio (2ch + 5ch, 2ch
+ 6ch, 2ch + 8ch. (2) Quantization / DRC 01b: 20 bits (3) Sampling frequency fs 00b: 48 kHz (4) Number of audio channels 001b: 2 ch (stereo) (7) Audio application mode 11b: 2 ch + surround mode (8) Thinning-out information 00b: Full (1/1) (9) Thinning-out information 00b: Full (1/1) is recorded only for LFE1ch.

The ATS of audio stream # 1
For AST-ATR: (1) Audio encoding mode 101b: Linear PCM audio (2ch + 5ch, 2ch
+ 6ch, 2ch + 8ch. (2) Quantization / DRC 00b: 16 bits (3) Sampling frequency fs 01b: 96 kHz (4) Number of audio channels 010b: 3 ch (7) Audio application mode 11 b: 2 ch + surround mode (8) Thinning information of the stream 00b : Full (1/1) (9) Thinning information of only LFE 1ch 00b: Full (1/1) is recorded.

The ATS of audio stream # 2
For AST-ATR: (1) Audio encoding mode 101b: Linear PCM audio (2ch + 5ch, 2ch
+ 6ch, 2ch + 8ch. (2) Quantization / DRC 00b: 16 bits (3) Sampling frequency fs 00b: 48 kHz (4) Number of audio channels 010b: 3 ch (7) Audio application mode 11b: 2 ch + surround mode (8) Thinning information of the stream 00b : Full (1/1) (9) Thinning information of only LFE 1ch 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 composed of an arbitrary number of packs for 0.4 to 1.0 second, and the ACB unit is 0.5
It is composed of an arbitrary number of packs for up to 1.0 second. 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. Also, audio time (GOF: Group of Audio)
Frame unit) is indicated by the A-CONT pack, and its data position is determined by the number of the audio frame number, the first access unit pointer, and the frame header. The A-pack immediately before the A-CONT pack is
Do not force padding to 0.5 seconds of 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. Similarly, in the case of multi-channel, they are arranged adjacently. The V pack is arranged adjacent to the A pack when displaying an image during reproduction of an audio signal. A pack and V pack are shown in FIG.
As shown in FIG. 19, 4-byte pack start information, 6-byte SCR (System Clock Reference) information, and 3-byte Mux rate for 2034 bytes of user data (A data, V data) (Rate) information and a 1-byte stuffing are added to add a pack header of 14 bytes in total (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, which is the time stamp, to be “1” in the first pack in the ACB unit and to be continuous in the same title.

On the other hand, the A-CONT pack is shown in FIG.
, A 14-byte pack header, a 24-byte system header, a 1003-byte ACD (Audio Character Display) packet,
It is composed of byte ASD (Audio Search Data) packets. The ACD packet has a 6-byte packet header and a 1-byte substream ID.
And a 636-byte ACD as shown in detail in FIG.
(Audio Character Display) Information and 360
It consists of a reserved area of bytes. The ASD packet also has a 6-byte packet header and a 1-byte substream ID, and a 10-byte packet as shown in detail in FIG.
It is composed of 00 bytes of ASD (audio search data).

The 636-byte ACD information area is shown in FIG.
As shown in detail in FIG. 5, there is 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", and each area has a 93-byte area. The name space area is composed of two free space areas of 93 bytes each and a data pointer area of 15 bytes. For example, as shown in FIG. 16, data for displaying a song name in Japanese is arranged in one namespace area of the character “1” of the first language and the character “2” of 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 is, for example, 1
6 bytes of service level information, 12 bytes of language code information, 6 bytes of character set code information, 6 bytes of display item information, 2 bytes of "difference from previous ACD information" information, and 6 bytes Is composed of the 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). 12
The language code information of the byte indicates the language of the characters "1" and "2" in 2 bytes each as in the case of the video file, and indicates a maximum of eight 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 codes, 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. The MS-JIS 6-byte display item information indicates the free spaces “1” and “2”, the presence / absence of a data pointer, and the ID shown in FIG. 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 bytes. It is composed of a title set search information of 8 bytes, a title search information of 8 bytes, a track search information of 404 bytes, an index search information of 408 bytes, a highlight search information of 80 bytes, and a reserved area of 52 bytes. I have.

The 8-byte current number information includes the current title number of the title set (2 bytes: BCD) and the current track number of the title set (2 bytes: BC).
D), the current index number (2 bytes: BCD) of the track, and the 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 is:
It consists 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 includes a first sector number (4 bytes) of the title and a last sector number (4 bytes) of the title. 4
The 04-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), and a first index number (4
Byte) and the last index number of the track (4 bytes). The 80-byte highlight search information is a track in-sector number (4 bytes × 1).
0) and track out sector number (4 bytes x 10)
It consists of.

According to such a format, at the head of a plurality of A packs, the subsequent A
A-CONT for managing audio signal of pack
Since the packs are arranged, the audio data is not integrated with the video data and the like, and 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, the title in the A-CONT pack,
Since TOC information such as a start address and performance time is arranged, even during audio reproduction, information according to a user operation can be taken out from the A-CONT pack and reproduction can be started. Further, 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 of the playback device, and the information according to the user operation is stored in the memory. And can immediately start playback. 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 disks.

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

Also, 2. When image (V) data exists in the content, regarding the audio data, in addition to the above (1) to (3), (4) the title, the current time in the music, and the remaining time are displayed and managed in real time. be able to.

Regarding video data, (1) Search and random access to 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 shown in FIG. 1B is an A-CO
Although it includes the NT pack and the CONT pack, the configuration may be such that the V pack and the CONT pack are not included 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.

FIG. 19 is an explanatory diagram showing the format of the audio manager information (AMGI) in the second embodiment in detail, FIG. 20 is an explanatory diagram showing the TOC information in FIG. 19 in detail, and FIG. 21 is an audio diagram in the third embodiment. Title set information (AT
FIG. 3 is an explanatory diagram showing the format of SI) in detail. Next, a second embodiment using TOC (Table Of Contents) information will be described. As shown in FIG.
A TOC as shown in detail in FIG. 20 is additionally recorded in a free area of a GI (audio manager information), and the reproducing apparatus accesses the TOC information to find the beginning of the music. FIG. 20 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 processing may be repeated, or may not be repeated.

Here, the TO used in the CD is
In the C information, the absolute time at which each movement indicated by the number when point = 00 to 99 starts is expressed in minutes (PMIN), seconds (PSEC), and frames (PFRAME). When point = A0, PMIN indicates the first movement, and PSEC = PFRAME = 0. When point = A1, PMIN indicates the last movement, PS
EC = PFRAME = 0. When point = A2, the absolute time at which the lead-out area starts is minutes (PMI
N), seconds (PSEC) and frames (PFRAME). Therefore, the TOC information shown in FIG.
This indicates that six songs (or six movements) are recorded on the D audio disc 1 (points = 01 to 01).
06). In addition, this TOC information is used instead of AMGI.
As shown in FIG. 21, recording may be performed in an empty area of ATSI (audio title set information), or recording may be performed in a reserved area (360 bytes) in an ACD packet of the A-CONT pack shown in FIG. You may do so.

Next, a fourth embodiment will be described.
FIG. 22 shows a fourth example of the DVD audio disk according to the present invention.
24 to 26 show the format of the embodiment of FIG.
The VTS shown in FIG. 1 is not included, and is constituted only by the ATS. And this ATS (directory) is S
AMG (Structure of Simple Audio Manager), audio manager (AMG) shown in FIG. 1B, video and audio audio manager menu (AMGM), ATS <1> and ATS managed by AMGI in AMG <2>, and
ATS <1> and ATS <2> are as shown in FIG.
It does not include the A-CONT pack, and is composed of the A pack and the RTI pack. Also, the RTI packs are not arranged more frequently than the A packs, and about one pack is arranged every 0.5 seconds. Further, the still image pack is arranged at a predetermined position. SAMG is an area in which a SAPP table (TOC) for locating ATS <1> and ATS <2> is repeatedly described eight times. This area can be defined as one independent file.

Here, for reference, FIG. 24 shows a DVD-V
an (video + audio navigation) disc format, which format is roughly D
Video title set (VT) as VD-video data
S), and an ANV title set (ANV-TS) as audio navigation (navigation) data. More specifically, the VTS has the same configuration as the DVD video disk shown in FIG. 1A and FIG. 25 described later, while the ANV-TS has an audio manager (AMG) shown in FIG. VTS <1> and VTS <2> are paired with AMG in AMG.
It is composed of ATS <1> and ATS <2> managed by I. The format of the DVD video disc does not include ATS or ANV-TS as shown in FIG. 25 and FIG.

FIG. 26 shows the format of a DVD-Avd (audio + AV data) disc. This format is roughly a video title set (VTS) as DVD-video data and an audio title set (VTS) as DVD-audio data. ATS). In more detail, VTS
A video manager (VMG) shown in (a) and a video and audio video manager menu (VMGM)
And VTS <1> managed by VMGI in VMG
It consists of.

On the other hand, ATS includes SAMG, an audio manager (AMG) shown in FIG. 1B, and a video and audio audio manager menu (AMGM).
And an AT paired with audio data in VTS <1> on the VTS side and managed by AMGI in AMG
S <1> does not form a pair with the VTS side, and is constituted by ATS <2> which is also managed by AMGI in AMG. Further, as shown in FIG. 23, this ATS <2> does not include the A-CONT pack, but is composed of the A pack and the RTI pack.

FIG. 27 shows an audio-only title audio object attribute (AOTT-AOB-) recorded on the disc as attribute data indicating the contents of the audio data of the disc of the fourth embodiment.
ATR). This attribute data is 8 bytes (6
It is composed of 4 bits b63 to b0) and is described in detail in order from the MSB side. 4 bits (b63 to b60) audio encoding mode; 1 bit (b59) downmix (DM) mode; A 3-bit (b58 to b56) multi-channel structure; a 4-bit (b55 to b52) quantization bit number Q1 of the channel group 1; and a 4-bit (b51 to b48) channel group 2 quantization bit number. Q2, a sampling frequency fs1 of channel group 1 of 4 bits (b47 to b44), a sampling frequency fs2 of channel group 2 of 4 bits (b43 to b40), and a reserved area of 3 bits (b39 to b37). -Channel allocation of 5 bits (b36 to b32);-Remaining 32 bits (b31 to b0) It is composed of a reservation area. Note that the remaining 32 bits (b31 to b
0) is used for attribute data of each channel.

The above data will be described in more detail below. (1) Audio encoding mode (b63 to b60) 0000b: Linear PCM mode 0001b: Reserved for compressed audio (Dolby Digital) 0010b: Reserved for compressed audio (without MPEG2 extension) 0011b: For compressed audio (with MPEG2 extension) 0100b: Reserved for compressed audio (DTS) 0101b: Reserved for compressed audio (SDDS) Others: Reserved for other encoding modes (2) Downmix mode (b59) 0b: Downmix stereo output permitted 1b: Downmix stereo output prohibited (3) Multi-channel structure type (b58 to b56) 000b: type 1 Other: reserved

(4) Quantized bit number Q of channel group 1 (b55 to b52) 0000b: 16 bits 0001b: 20 bits 0010b: 24 bits Other: reserved (5) Quantized bit number Q of channel group 2 (b51)
-B48)-The quantization bit number Q of the channel group 1 is "0000".
"0000b" in the case of "b". The quantization bit number Q of the channel group 1 is "0001".
"0000b" or "0001b" in the case of "b".
In the case of "b", "0000b", "0001b" or "0010b" where 0000b: 16 bits 0001b: 20 bits 0010b: 24 bits Other: reserved

(6) Sampling frequency fs1 of channel group 1 (b47 to b44) 0000b: 48 kHz 0001b: 96 kHz 0010b: 192 kHz 1000b: 44.1 kHz 1001b: 88.2 kHz 1010b: 176.4 kHz Others: reserved

(7) Sampling frequency fs2 of channel group 2 (b43 to b40)-"0000b" when sampling frequency fs1 of channel group 1 is "0000b"-Sampling frequency fs1 of channel group 1 of "0001b" In this case, "0000b" or "000
1b ”•“ 0000b ”,“ 0001 ”when the sampling frequency fs1 of the channel group 1 is“ 0010b ”
"b" or "0010b"-"1000b" when the sampling frequency fs1 of the channel group 1 is "1000b"-"1000b" or "100" when the sampling frequency fs1 of the channel group 1 is "1001b"
1b ”. When the sampling frequency fs1 of the channel group 1 is“ 1010b ”,“ 1000b ”,“ 1001 ”
b "or" 1010b "

The disk of the fourth embodiment uses the linear PCM mode. As shown in FIG. 28, the private header of the linear PCM includes: an 8-bit substream ID, a 4-bit reserved area, a 4-bit ISRC number, an 8-bit ISRC data, and an 8-bit ISRC data. A 16-bit first access unit pointer; a 1-bit audio emphasis flag F1;
And 1 bit audio emphasis flag F2.

FIGS. 29 and 30 show an encoding device.
FIG. 29 is a block diagram showing an embodiment of an audio signal encoding device according to the present invention, and FIG. 30 is a block diagram showing a signal processing circuit of FIG. 29 in detail.

In FIG. 29, the analog audio signal A
Is sampled by the A / D converter 31 at a sufficiently high sampling frequency (sampling period Δt), for example, 192 kHz, and a high-resolution P of, for example, 24 bits
Xb1, x1, xa1, x2, xb2, x3, xa2,..., X
bi, x2i-1, xai, x2i,... This data sequence (xbi, x2i-1, xai, x
2i) is encoded by the signal processing circuit 32 and the memory 33 shown in detail in FIG. 30, and then applied to the DVD audio formatting unit 34.

The configuration of the signal processing circuit 32 will be described in detail with reference to FIG. First, the data sequence (xbi, x2i-1, x) corresponding to the high-resolution curve α is passed through a low-pass filter 36 that passes a half band, for example, an FIR filter.
ai, x2i), a data sequence xc1, *, *, *, xc2, *, *, *, xc3, *, *, corresponding to the band-limited low-resolution curve β
*,..., Xci, *, *, *,..., And by thinning out the data "*" from the data string by the thinning circuit 37, the data string xc1, xc2, xc3,. , Xci, ... are generated. Here, the data sequence xci is a data sequence in which the digital data A / D converted by the A / D converter 31 is band-limited and the sampling frequency is reduced to 1/4.

The data sequence (xbi, x2i-1, xai, x
2i), a data sequence xb1, xa1, xb2, xa2,..., Xbi, xai,.

Then, these data strings xci, xbi, x
Based on ai, the adder 39 acting as a difference calculator calculates the difference xbi−xci = Δ1i xai−xci = Δ2i. Here, the difference data Δ1i and Δ2i are, for example, 24 bits or less, and the number of bits may be fixed or variable.

The allocation circuit 40 converts the data string xci and the difference data Δ1i, Δ2i into user data (see FIG. 13).
(1 packet = 2034 bytes), and outputs the user data to the DVD formatting unit 34.

The video signal V is supplied to the A / D converter 31V
Then, the digital video signal is encoded into an MPEG format by a V encoder 32V, and then packed into user data shown in FIG. Then, the DVD formatter 34 packs the data into a format as shown in FIGS. The data formatted by the DVD formatter 34 is modulated by a modulation circuit 35 in a modulation method according to the disk, and a disk is manufactured based on the modulated data.

Next, a DVD-Audio disc according to a fifth embodiment will be described with reference to FIGS.
First, as shown in FIG. 31A, the data structure of the fifth embodiment roughly includes SAMG, AMG (audio manager), SPS (still picture set), and a plurality of ATSs (audio title set). ). The SPS (still picture set) is also referred to as an ASVS (audio still video set) in the following description in order to avoid confusion with a subpicture (SP).

The ATS includes, in order from the beginning, an ATSI (ATS information); and an audio object set (AOT) for an audio-only title shown in detail in FIGS.
(T-AOBS) and ATSI for backup. A
The TSI is in order from the top. ATSI-MAT (AT
SI management table) and ATS-PGCIT (A
TS program chain information table).

As shown in detail in FIG. 32, the AOTT-AOBS is composed of a plurality of audio-only title audio objects (AOTT-AOB). Each of the AOTT-AOBs is constituted by a plurality of programs (PG), and each of the programs is constituted by a plurality of cells (ATS-C).

The AOTT-AOB includes only audio data as shown in detail in FIG.
As shown in detail in 2 (2), it is composed of two types of AOTT-AOBs including audio data and real time information data (RTI data). Then, one or more types of AOTT-AOB are arranged in one disc or one song.

First AOT containing only audio data
Each program of the T-AOB includes a plurality of audio cells (A
TS-C), and this audio cell is composed of only a plurality of audio packs. Second AOTT-A including audio data and RTI data
Each OB program has a plurality of audio cells (ATS-
C), and this audio cell is composed of an RTI pack arranged at the second pack position and an audio pack arranged at another pack position.

The A pack of the linear PCM is composed of 2048 bytes or less, and is composed of a 14 byte pack header and an A packet as shown in FIG. The A packet has a packet header of 17, 9 or 14 bytes, a private header shown in detail in FIG.
Or 2011 bytes of audio PCM data.

As shown in FIG. 34, the private header includes: an 8-bit substream ID; a 3-bit reserved area; and a 5-bit UPC / EAN-ISRC (Universal Product Code / Universal Product Code / European Article Number International Standard Recording Code: European
Article Number-International Standard Recording C
ode) number, 8-bit UPC / EAN-ISRC data, 8-bit private header length, 16-bit first access unit pointer, 8-byte audio data information (A
DI) and 0 to 8 bytes of stuffing bytes.

The ADI includes: 1-bit audio emphasis flag; 1-bit reserved area; 1-bit downmix mode; 1-bit downmix code validity; and 4-bit downmix. A code, and a quantization word length “1” of the group “1” of 4 bits
And the quantization word length “2” of the 4-bit group “2”
A 4-bit audio sampling frequency fs1 of group "1"; a 4-bit audio sampling frequency fs2 of group "2"; a 4-bit reserved area; and a 4-bit multi-channel type. • 3 bit bit shift data of channel group “2” (see FIG. 36); 5 bit channel allocation information (see FIG. 42); 8 bit dynamic range control information; 8 × 2 bit reserved area It consists of.

8-bit (b7 to b0) UPC / EAN
-In the ISRC data area, as shown in FIG.
Different data is arranged according to the C / EAN-ISRC number. (1) When UPC / EAN-ISRC number = 1 Higher 2 bits b7, b6: Reserved Lower 6 bits b5 to b0: Country code (ISRC #
1) (2) When UPC / EAN-ISRC number = 2 Upper 2 bits b7, b6: Reserved Lower 6 bits b5 to b0: Country code (ISRC #
2) (3) When UPC / EAN-ISRC number = 3 Upper 2 bits b7, b6: Reserved Lower 6 bits b5 to b0: Copyright holder code (ISRC # 3) (4) UPC / EAN-ISRC number = 4 In the case of upper 2 bits b7 and b6: reserved Lower 6 bits b5 to b0: copyright holder code (ISRC # 4) (5) When UPC / EAN-ISRC number = 5 Upper 2 bits b7 and b6: reserved lower 6 bits b5 to b0: Copyright holder code (ISRC # 5) (6) When UPC / EAN-ISRC number = 6 Upper 4 bits b7 to b4: Reserved Lower 4 bits b3 to b0: Recording ear (IS
(RC # 6) (7) When UPC / EAN-ISRC number = 7 Upper 4 bits b7 to b4: Reserved Lower 4 bits b3 to b0: Recording Year (IS
RC # 7)

Linear PCM which is actual data in A-pack
In the data area, bits of data of each channel of the group “2” are reduced and arranged in order to improve the S / N ratio and reduce bits. FIG. 36A shows PCM data of six channels (group “1” = Ch1 to Ch3, group “2” = Ch4 to Ch6) as an example, and the level range is MAX = 0 dB to MIN = −144 dB (24
Bit), and the value of each channel Ch is as follows. Lmax2> Lmax1 = Lmax3>Lmax4>Lmax5> Lmax6 Then, while keeping the word length of Ch1 to Ch3 of the group "1" as it is, the value of Ch2 is the largest in this example, so each of Ch4 to Ch6 of the group "2" Level (0
-Lmax2) Upshift by dB to reduce 0 to 4 bits on the LSB side. In the example shown in FIG.
This shows that each level of h6 is up-shifted by the maximum number of bits = 4 and reduced to 20 bits.

Next, the configuration of the RTI pack will be described in detail with reference to FIG. This pack is composed of a 14-byte pack header and an RTI packet, and the RTI packet is composed of a 17- or 14-byte packet header, a private header, and 1 to 2015 bytes of RTI data. The RTI data is character information and playback control information relating to audio data.

The private header of the RTI packet includes: a 1-byte substream ID; a 2-byte UPC / EAN-ISRC number and data (these are simply referred to as ISRC in the figure); and a 1-byte private header length. And 1 byte of RTI information ID, and 0 to 7 bytes of stuffing byte. The above UPC / EAN-ISRC
The numbers and data are UPC / EAN-ISRC numbers and data relating to the copyright of the still picture contained in the SPCT pack.

Incidentally, the still picture set (audio still video set) shown in FIG.
The SPCT pack includes a 14-byte pack header and an SPC, as shown in detail in FIG.
The SPCT packet is composed of a packet header of 22 or 19 or 9 bytes and SPCT data of 2025 bytes or less. here,
One still image is compressed according to the MPEG1 or MPEG2 method and is composed of an I picture and an intra coded picture.
It is arranged as T-pack SPCT data. Note that S
Similarly, the packet header of the PCT pack may include the UPC / EAN-ISRC number and data relating to the copyright of the still picture as described in the RTI pack.

The ATSI-MAT shown in FIG.
Is composed of 2048 bytes (relative byte positions RBP0 to 2047) as shown in detail in FIG. 39, and, in order from the beginning: ATS identifier (AT) of 12 bytes (RBP0 to 11)
4 bytes (RBP12 to 15) of ATS end address (ATS-EA); 12 bytes (RBP16 to 27) of reserved area; and 4 bytes (RBP28 to 31) of ATSI. An end address (ATSI-EA) and a 2-byte (RBP32 to 33) version number (V
ERN), a reserved area of 94 bytes (RBP34 to 127), and an ATSI-MA of 4 bytes (RBP128 to 131).
An end address of T; a reserved area of 60 bytes (RBP132 to 191); and a V for AOTT of 4 bytes (RBP192 to 195).
The start address of the TS, and 4 bytes (RBP196-199) of AOTT A
A start address of the OBS or a start address of the VOBS for AOTT; a 4-byte (RBP 200 to 203) reserved area; and a 4-byte (RBP 204 to 207) ATS-PGC.
A start address of the IT; a reserved area of 48 bytes (RBP 208 to 255); a 128 (16 × 8) byte (RBP 256 to 383)
AOB attributes for AOTT (AOTT-A
OB-ATR) or the attribute of the audio stream of VOB for AOTT (AOTT-VOB-AST)
-ATR) and 288 (18 × 8) bytes (RBP 384 to 661)
For downmixing multi-channel audio data into two channels (ATS-DM-COEF)
T # 0 to # 15), a reserved area of 32 bytes (RBP 672 to 703), and an attribute (ATS-SPCT-ATR) of still picture data in AOBS for AOTT of 2 bytes (RBP 704 to 705). And 1342 bytes (RBP 706 to 2047).

128 (16 × 8) bytes (RBP256
383), this ATS is AOTT A
In case of having OBS, AOTT shown in detail in FIG.
-AOB-ATR is described. This AOTT-AOB
-ATR (b127 to b0) includes, in order from the MSB side: an audio coding mode of 8 bits (b127 to b120); a reserved area of 8 bits (b119 to b112); and a 4-bit (b111 to b108). The number of quantization bits Q1 of the channel group "1"; the number of quantization bits Q2 of the channel group "2" of 4 bits (b107 to b104); and the number of quantization bits Q2 of the channel group "1" of 4 bits (b103 to b100). A sampling frequency fs1; a 4-bit (b99 to b96) sampling frequency fs2 of channel group “2”; a 3-bit (b95 to b93) multi-channel structure type; and a 5-bit (b92 to b88). Channel allocation: 8 bits × 11 (b87 to b0) reserved area.

On the other hand, this ATS is used for AOTT A
When there is no OBS, AOTT-V shown in FIG.
OB-AST-ATR is described. This AOTT-V
The OB-AST-ATR (b127 to b0) includes, in order from the MSB side: an 8-bit (b127 to b120) audio encoding mode; an 8-bit (b119 to b112) reserved area; and a 4-bit (b111 to b111). b108) The number of quantization bits Q
4 bits (b107 to b104) reserved area; 4 bits (b103 to b100) sampling frequency fs; 4 bits (b99 to b96) reserved area; 3 bits (b95 to b93). A 5-bit (b92-b88) channel assignment; a 3-bit (b87-b85) decoding audio stream number; and a 5-bit (b84-b8).
0) a reserved area for MPEG audio DRC of 2 bits (b79, b78); a reserved area of 2 bits (b77, b76); the number of compressed audio channels of 4 bits (b75 to b72); -Consists of a reserved area of 8 bits x 9 (b71 to b0).

The above data is shown below in detail. However,
Since the number of quantization bits, the sampling frequency, and the multi-channel type are the same as those in FIG. 27, the description will be omitted. (1) Audio encoding mode (b127 to b120) 000000000b: Linear PCM mode 00000001b: Reserved for compressed audio (Dolby Digital) 00000010b: Reserved for compressed audio (without MPEG2 extension) 000000011b: For compressed audio (with MPEG2 extension) 00000100b: Reserved for compressed audio (DTS) 00000101b: Reserved for compressed audio (SDDS) Other: Reserved for other encoding modes

(8) Channel assignment (b92 to b8)
8) FIG. 42 shows channel assignment information of groups “1” and “2” from 1 channel (monaural) to 6 channels. Incidentally, the symbols shown in the figure will be described below. C (mono): monaural L, R: 2-channel stereo Lf: multi-channel left front Rf: multi-channel right front C: multi-channel center LFE: multi-channel Low Frequency Effect S: multi-channel surround Ls: multi Channel left surround Rs: multi-channel right surround

(9) “0” or “1” of the number of decoding audio streams (b87 to b85) (10) DRC for MPEG audio (b79, b7)
8) 00b: DRC data does not exist in the MPEG audio stream. 01b: DRC data exists in the MPEG audio stream.

(11) Number of compressed audio channels (b7
5-b72) When the audio encoding mode is linear PCM audio, “1111b” 0000b: 1ch (mono) 0001b: 2ch (stereo) 0010b: 3ch 0011b: 4ch 0100b: 5ch 0101b: 6ch 0110b: 7ch 0111b: 8ch :on hold

In the area of 288 (18 × 16) bytes (RBP 384 to 671) shown in FIG. 39, the table numbers “0” to "1
5 "(ATS-DM-COEF)
T # 0 to # 15) are described by 18 bits.

The two bytes (RBP704, RBP704) shown in FIG.
The area (705) is an attribute (ATS-SPC) of still picture data in AOBS for AOTT.
In order to describe (T-ATR), as shown in detail in FIG. 44, in order from the MSB side: a 2-bit (b15, b14) video compression mode; a 2-bit (b13, b12) TV system; An aspect ratio of bits (b11, b10); a display mode of 2 bits (b9, b8); a reserved area of 2 bits (b7, b6); and a resolution of a source picture of 3 bits (b5 to b3). And a 3-bit (b2 to b0) reserved area.

The contents of the ATS-SPCT-ATR are described in detail below. (1) Video compression mode (b15, b14) 00b: MPEG1 compatible 01b: MPEG2 compatible Other: reserved (2) TV system (b13, b12) 00b: 525/60 01b: 625/60 Other: reserved (3) Aspect ratio (B11, b10) 00b: 4: 3 11b: 16: 9 Other: reserved (4) Display mode (b9, b8) 00b: reserved 01b: reserved 10b: Only letterbox is permitted 11b: Not described. (5) Resolution of source picture (b5 to b3) Other: pending

The ATS-PGCIT shown in FIG.
(ATS program chain information
Table) is an audio title set PG shown in detail from the top as shown in detail in FIG.
CI table information (ATS-PGCI
TI) and n audio title sets PGCI search pointer (ATS-PGCI) shown in detail in FIGS.
-SRP # 1 to #n); and a plurality of audio title sets PGCI shown in detail in FIG.

The ATS-PGCITI is composed of 8 bytes as shown in detail in FIG. 46. From the top, the number of ATS-PGCI-SRPs # 1 to #n of 2 bytes, the 2-byte reserved area, It is composed of a 4-byte ATS-PGCIT end address. ATS-PGCI-SRP # 1- #
Each of n is composed of 8 bytes as shown in detail in FIG. 47, and sequentially from the top: a 4-byte ATS-PGC category (ATS-PGC-CAT) shown in detail in FIG. 48; and a 4-byte ATS-PGCI. End address.

ATS of 4 bytes (b31 to b0) described above
As shown in detail in FIG. 48, the categories of the PGC are, in order from the top: 1-bit (b31) entry type; 7-bit (b30 to b24) ATS audio title number (ATS-TTN); (B23, b22) block mode; 2-bit (b21, b20) block type; 4-bit (b19-b16) audio channel number; 8-bit (b15-b8) audio encoding mode And · an 8-bit (b7 to b0) reserved area.

The above category (ATS-PGC-CAT)
The details are described below. (1) Entry type (b31) 0b: Not entry PGC 1b: Entry PGC (2) Number of ATS audio titles (b30 to b24) Number of audio titles of this ATS is "1" to "99"
Describe in the range. (3) Block mode (b23, b22) 00b: Not ATS-PGC of ATS-PGC block 01b: First ATS-PG of ATS-PGC block
C 10b: Reserved 11b: Last ATS-PG of ATS-PGC block
C (4) Block type (b21, b20) 00b: Not a part of this block 01b: Block of difference only in audio coding mode 10b: Block of difference only in audio channel 11b: Difference of both audio coding mode and audio channel (5) Number of audio channels (b19 to b16) 0000b: 2 channels or less 0001b: More than 2 channels

Each of the audio title sets PGCI (ATS-PGCI) shown in FIG. 45 is sequentially described from the top as shown in detail in FIG. 49. ATS-PGC general information (ATS-PGC) shown in detail in FIGS. PGC-GI); ATS program information table (ATS-PGIT) shown in detail in FIGS. 52 to 56; and ATS cell playback information table (ATS-C-) shown in detail in FIGS. PBIT).

The ATS-PGC-GI is composed of 16 bytes (RBP0 to RBP15) as shown in detail in FIG. 50, and sequentially from the top.
S-PGC content (ATS-PGC-CNT); 4 bytes (RBP4-7) ATS-PGC playback time (ATS-PGC-PB-TM); 2 bytes (RBP8, 9) pending Area, 2-byte (RBP10, 11) ATS-PGIT start address, 2-byte (RBP12, 13) ATS-C-PBI
It consists of a start address of T, and a reserved area of 2 bytes (RBP14, 15).

ATS of 4 bytes (b31 to b0) described above
As shown in detail in FIG. 51, the PGC contents are, in order from the beginning, a reserved area of 17 bits (b31 to b15), a program number of 7 bits (b14 to b8), and a cell number of 8 bits (b7 to b0). It consists of. The number of programs ranges from "1" to "99", and the number of cells ranges from "1" to "255".

The ATS program information table (ATS-PGIT) shown in FIG.
As shown in detail in FIG. 2, it is composed of n ATS program information (ATS-PGI) # 1 to #n. Each of ATS-PGI # 1 to #n is shown in FIG.
As shown in detail in FIG. 54, it is composed of 20 bytes (RBP0 to 19), and in order from the beginning.
S-PG content (ATS-PG-CNT), 1-byte (RBP4) ATS-PG entry cell number, 1-byte (RBP5) reserved area, and 4-byte (RBP6-9) ATS -Start of first audio cell of PG-Presentation time (FAC-S-PTM)
ATS-PG playback time of 4 bytes (RBP10 to 13), ATS-PG pause time of 4 bytes (RBP14 to 17), and reserved area (copyright management) of 1 byte (RBP18) (For data CMI), and 1 byte (RBP19) reserved area.

ATS-P of 2 bytes (b31 to 0)
As shown in detail in FIG. 54, the G content includes, in order from the beginning, a 1-bit (b31) relationship between the previous and current PGs (R
/ A) and 1-bit (b30) STC discontinuity flag (STC
-F), and the number of attributes of three bits (b29 to b27) (A
TRN) and a 3-bit (b26 to b24) channel group (C
hGr) "2" bit shift data; 2 bit (b23, b22) reserved area; 1 bit (b21) downmix mode (D-
M), 1 bit (b20) downmix coefficient validity (illustrated *), 4 bits (b19 to b16) downmix coefficient table number (DM-COEFTN), 1 bit each, It is composed of RTI flags F15 to F0 of a total of 16 bits (b15 to b0).

The ATS cell playback information table (ATS-C-PBI) shown in FIG.
T), as shown in detail in FIG.
Playback information (ATS-C-PB
I) It is composed of # 1 to #n. ATS-CP
Each of BIs # 1 to #n includes one as shown in FIG.
An ATS-C index number of 1 byte (RBP0) and an ATS-C of 1 byte (RBP1) shown in detail in FIG.
C type (ATS-C-TY), 2 bytes (RBP2, 3) reserved area, 4 bytes (RBP4 to 7) ATS-C start address, 4 bytes (RBP8 to 11) It is composed of an ATS-C end address.

As shown in detail in FIG. 57, the ATS-C type of 1 byte (b7 to b0) is:
C-COMP), a 2-bit (b5, b4) reserved area, and a 4-bit (b3-b0) ATS cell application (ATS-
C-Usage).

The contents of the data will be described in detail below. (1) ATS cell element (b7, b6) 00b: Audio cell consisting of only audio data 01b: Audio cell consisting of audio data and real-time information 10b: Silence cell consisting only of audio data for silence 11b: Only consisting of still pictures Picture cell (2) ATS cell use (b3 to b0) 0000b: No description 0001b: Spotlight part Other: Reserved

Next, an encoding device according to a fifth embodiment will be described. 58 and 59 show the configuration and processing of the encoding device, respectively. The analog audio signal A is subjected to a sufficiently high sampling frequency (sampling period Δt) by the A / D converter 31, for example, 192 kHz.
, And converted into a 24-bit high-resolution PCM signal. In the subsequent bit shift / signal processing circuit 32, when the compression is not performed, the PCM data converted by the A / D converter 31 is directly converted to the DV signal.
It is applied to the D formatting unit 34. On the other hand, when performing compression, the PCM data converted by the A / D converter 31 is compressed by the bit shift / signal processing circuit 32 according to the encoding mode, and then the DVD
Applied to the formatting unit 34 (steps S5 and S5).
6). In the bit shift / signal processing circuit 32, each channel of the group “2” is bit-shifted.

The video signal V is supplied to the A / D converter 31V
Then, the digital video signal is encoded into an MPEG format by the V encoder 32V and applied to the DVD formatter 34 (steps S1 and S2). Further, the still image signal SP is converted into a digital signal by the A / D converter 31SP, and then the digital still image signal SP is encoded into the MPEG format by the compression encoder 32SP and applied to the DVD formatting unit 34 (step S3). , S4). Also, the copyright information and the real-time text information (RTI) are transmitted through an interface (I / F) 40.
(Steps S7 and S8), and the character information and the disc identifier EX are applied to the DVD formatting unit 34 (steps S9 and S10).

Then, the DVD formatting unit 34 performs packing in the format as described above (step S11). The data formatted by the DVD formatter 34 is modulated by a modulation circuit 35 according to a modulation method corresponding to the disk, and a disk is manufactured based on the modulated data, recorded once in the recording unit 38, or communicated. The data is transmitted via the I / F 39 (step S12).

FIG. 60 shows a specific configuration of the decoding device according to the fifth embodiment, and FIG. 61 functionally shows the configuration of FIG. FIG. 62 shows the processing. FIG.
0, in FIG. 61, first, when a music selection, reproduction, fast-forward, and stop operation 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 according to the operation, At the time of reproduction, the pit data recorded on the DVD audio disk 1 is read by the drive device 2 and then EFM demodulated.

In the reproducing apparatus 17, this signal is sent to the still image and V pack detecting section 3 and the A and RTI pack detecting section 9. When a still image pack and a V pack are recorded on the disc 1, the still image and V pack detection unit 3 detects the still image pack and the V pack in the reproduced data and sets the control parameters in the parameter unit 8. At the same time, the still image pack and the V pack are sequentially written into the still image and V pack buffer 4. The still image pack and the user data (video signal, still image information) in the V pack written in the V pack buffer 4 are transferred to the still image pack and the SCR in the V pack by the buffer extracting unit 5 (see FIG. 13). , And are output as analog video signals via the decompression and image conversion unit 6, the D / A conversion unit 7, and the video output terminals 15 and 15 '.

The A and RTI pack detecting section 9 detects the A and RTI packs in the reproduced data and sets the control parameters in the parameter section 14, and stores the A and RTI packs in the A and RTI pack buffer 10. Write sequentially. User data (audio signal, real-time information) in the A pack and RTI pack written in the A and RTI pack buffer 10
Are packed by the buffer extraction unit 11 in the order of packing, and
They are taken out in order of output time. Then, the audio signal is converted to a PCM conversion and bit shift / signal processing unit 12, D / A
The signal is output as an analog audio signal via the conversion unit 13 and the audio output terminal 16. The real-time information is sent to the display signal generator 20 to generate a display signal. The display signal is output via the display signal output terminal 22 or is output to the built-in character display 21.

Referring to FIG. 62, the processing of this decoding device will be described. First, the recording data is read out by accessing the disk 1 (step S20). 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 Information and disc identifier (EX)
Are separated. Next, each decoding step S22 to S3
At 0, each separated data is decoded and then synchronously reproduced (steps S31 and S32).

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

When it is necessary to synchronize a still image with audio, a time control signal for real-time synchronization is represented by a time control signal shown in FIG.
Still picture provided in addition to ATSI of 1 (B)
Control information table (SPC
IT) under the time control data information (SPCIT-TCDI).

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

Further, the still picture data of the SPCT pack shown in FIG. 38 can include side information for controlling the page of the still picture. The page control data defined by the side information is interpreted while referring to the SPPI. If there is not enough space to store the still picture data, it is acceptable to include the side information for controlling the still picture page in the RTI data of the RTI pack.

Next, an embodiment for transmitting a digital audio signal formatted as described above via a communication line will be described. First, the packing device on the transmission side will be described with reference to FIGS. As shown in FIG.
, Buffer memory 30B, control circuit 29
, An operation unit 27 and a display 28. And
64 to 67, first, a video signal V, a still image signal SP, an audio signal A, and real-time information R
When the TI and the disc identifier (EX) are input, in step S100, an audio pack is generated as shown in detail in FIG. 65 (step S101), a video pack is generated (step S102), and a still image pack is generated (step S102). Next, a real-time text is generated (step S104).

Next, the cell (ATS-C) is managed (step S200), and then PTT (part of title) is managed.
(Step S300), and then the title (AO
TT-AOB) (step S400), and then a title set (AOTT-AOBS) (step S500) In the following step S600, a title set is generated as shown in detail in FIG. (Step S601) Then, a menu is generated (Step S602), and then the ATS-PGCI is generated.
(Step S603), and then generates PGIT composed of PG contents including bit shifts to generate PGCI, thereby generating ATS-PGCIT.
Is generated (step S604). Next, ATSI is generated by generating an MAT of attributes and coefficients (step S605). Next, an AMG is generated (step S7).
00), and finally generates a TOC (step S80).
0).

Next, when transmitting the digital audio signal formatted as described above via a communication line, the transmission data stored in the transmission buffer is divided into predetermined lengths as shown in FIG. Then, a packet including a destination address is added to the beginning of the packet (step S42), and the packet is output on the network (step S43).

Next, the data receiving side will be described with reference to FIGS. As shown in FIG. 68, the unpacking device on the data receiving side includes an unpacking processing unit 60.
, A buffer memory 60B, and a parameter memory 56.
, A control circuit 59, an operation unit 57, and a display 58. First, as shown in FIG. 69, the header is removed from the packet received from the network (step S51), and the received data is restored (step S5).
2) and then transfer this to the memory (step S5)
3).

Next, as shown in FIGS. 70 to 72, first,
AMG is decoded to detect ATS (step S11).
00), and in subsequent step S1200, A
In order to decode the TSI, the category of the ATS-PGCI is decoded as shown in detail in FIG. 71 (step S1201), and then the PGIT composed of the PG content including the bit shift is decoded (step S120).
2) Then, the attributes and coefficients of the MAT are decoded (step S1203), and these decoded parameters are set in the parameter memory 56 (step S1).
204).

Next, when the reproduction is started, the pack is identified (step S1300), and in the succeeding step S1400, the audio pack is decoded as shown in detail in FIG. 72 to decode the pack (step S140).
1), then decode the video pack (step S1)
402), decode the still image pack (step S1403), and then decode the real-time text (step S1404). Then, an audio signal, a video signal, a still image signal, and a real-time text signal decoded from each of these packs are output (step S1500), and the process of steps S1300 to S1500 is repeated during reproduction.

Next, the SPS (still picture set) shown in FIG. 31, that is, the ASVS (audio still video set) will be described in detail with reference to FIGS. Here, an audio still video object set (ASVOBS) is also used for a still picture object set (SPOBS) described below in order to avoid confusion with a subpicture (SP).
Also say. As shown in FIG. 73, the ASVS (audio
The still video set includes an ASVS information (ASVSI) shown in detail in FIGS. 74 and 75, an audio still video object set (ASVOBS) shown in FIG. 76 and a backup ASV.
It is composed of SI.

ASVS information (ASVS information
I) includes audio still video unit information (ASVUI) shown in detail in FIG.
The ASV address map (ASV-A) shown in detail in FIG.
DMAP) and a stuffing area (00h).

The ASVUI (888 bytes in total) is shown in FIG.
12 bytes ASVS-ID, 2 bytes ASVSU number, 2 bytes reserved area, 4 bytes ASVOBS start address, 4 bytes ASVOBS end address, 2 Byte x 4 ASVU attributes # 0 to # 3
4 bytes × 16 ASVOBS sub-picture palettes # 0 to # 15, and 8 bytes × 99 ASVU # 1 to # 99 general information

The ASV address map (A
SV-ADMAP), as shown in detail in FIG.
(≦ 99) ASVUs # 1 to #m
Each of the SVUs # 1 to #m is configured by a start address of the ASVUs # 1 to # 99.

Next, the audio still shown in FIG.
The video object set (ASVOBS) will be described. The audio still video object (ASVOB) is presentation data of one audio still video (ASV), and includes highlight (HLT) information data for a button and sub-picture (SP) data for the button. And still picture (SPCT) data. However, one still picture (SP) is contained in one ASVOB.
CT) data only.・ One highlight (HLT) in one ASVOB
Only information data can be included. The highlight information is used to operate a still picture button. One ASVOB can include one to three sub-picture (SP) data according to the still picture mode. The SP data is used to display a still picture button.

The audio still video object set (ASVOBS) shown in FIG. 73 is an aggregate of the above ASVOBs as shown in FIG. ASVO
B is a highlight (HLT) as shown in FIG.
In order to prevent the HLT pack from functioning as an empty pack that does not include highlight information although the pack is arranged at the head, a pack that substantially includes only a still picture (SPCT) pack and a high pack as shown in FIG. There are two types: a write (HLT) pack, a sub-picture (SP) pack and a still picture (SPCT) pack.

The highlight (HLT) pack is shown in FIG.
As shown in (a), it is composed of a 14-byte pack header, a system header, and a 2013-byte highlight information packet. Highlight information packet is 6
Byte header, 1-byte substream ID and 694-byte highlight information (ASV-HL
I). The system header has a 4-byte system start code, a 2-byte header length,
Each area includes a 3-byte rate bound, a 2-byte audio bound, a 1-byte restriction flag, and a 9-byte stream ID.

The highlight information (ASV-HLI) is shown in FIG.
As shown in FIG. 8, the ASV highlight general information (22 bytes) and the ASV button color information table (8 bytes ×
3) and an ASV button information table (18 bytes × 3
6). ASV button information table is AS
It consists of V button information # 1 to #n, and each ASV button information #i includes an ASV button command which is a picture control command. This ASV button command describes a navigation command when the button shown in FIG. 81 is operated.

On the other hand, as shown in FIG. 77 (b), the SPCT pack and the SP pack are composed of a 14-byte pack header and a 2025-byte still picture packet or sub-picture packet, and the pack header is a 4-byte pack header. Start code, 6 byte SCR,
It is composed of a program mux rate of 3 bytes and a stuffing length of 9 or 22 bytes.

A still picture (SPCT) packet includes an SPCT packet header and video data for a still picture as shown in detail in FIG. This SPCT packet header has 9 bytes of SPCT packet information always provided at the beginning, 5 + 5 bytes of SPCT packet information provided only for the first SPCT packet of a still image, and only for the first SPCT packet of ASVOB. It includes the provided 3-byte SPCT packet information.

A sub-picture (SP) packet includes an SP packet header and sub-picture data as shown in detail in FIG. This SP packet header has 9-byte SP packet information always provided at the head and 5 bytes provided only in the case of the first SP packet of the SP unit.
Byte SP packet information and first SP of ASVOB
Includes 3-byte SP packet information provided only for a packet. On the decoder side, based on such a data structure, the main picture, the sub-picture, and the highlight information are combined and displayed as shown in FIG.

Next, a data structure of a modification of the fifth embodiment will be described with reference to FIG. Here, FIG.
In the data structure shown in FIG. 1B, the still picture control information table (SPCI
T) within the ATS, the ATSI-MAT and ATS-
Although it is provided independently of PGCIT, in this modification, it is provided in ATS-PGCIT as shown in FIG. In the following description, the sub picture (SP)
To avoid confusion with SPCIT, ATS-ASV
-Called PBIT (ATS Audio Still Video Playback Information Table).

This ATS-ASV-PBIT is additionally provided in the ATS-PBIT shown in FIG. 49, as shown in detail in FIG. 83, and includes m programs # 1 to #m shown in FIGS. 84, 85 in detail. ATS-ASV-playback information of the search pointer (ATS-PG-ASV-PBI-S
RP # 1 to #m) and n ATS-ASV-PBIs # 1 to #n detailed in FIGS. 86 to 90 (n ≦ m).
≦ 99). As shown in FIG. 84, each of the SRPs # 1 to #m has a 1-byte ASVU number and a 1-byte ASV display mode (ASV-DM).
OD), 2 bytes of ATS-ASV-PBI start address, and 2 bytes of ATS-ASV-PBI end address.

The ASVU number is a value in the range from “1” to “99”. As shown in detail in FIG. 85, the ASV display mode includes: a 4-bit (b7 to b4) reserved area; a 2-bit (b3, b2) display timing mode; and a 2-bit (b1, b0) display order. It consists of a mode and. The above data is shown in detail below. (1) Display timing mode 00b: Slide show 01b: Browserable Other: Hold (2) Display order mode 00b: Sequential 01b: Random 11b: Shuffle Other: Hold

Each of ATS-ASV-PBIs # 1 to #n has 10 bytes × k (k ≦ 99) as shown in FIG.
ASV display list. FIG. 87 shows that the display timing mode (b3, b2) is the slide show (00b) and the display order mode (b
ASV when (1, b0) is sequential (00b)
8 shows an ASV number of 8 bits (b79 to b72), a reserved area of 8 bits (b71 to b64), and 8 bits (b63 to b56), which are compulsory at the start of ASV. Button number (FOSL-BTN)
N), 8 bits (b55 to b48) of a program number to be played back at the start of ASV, 8 bits × 4 (b47 to b16) display start timing (31 to 0), and 4 bits ( b15-b12) start effect mode; 4-bit (b11-b8) start effect period; 4-bit (b7-b4) end effect mode; 4-bit (b3-b0) end effect period It is composed of

The details of the above data will be described below in detail. (1) Display start timing (31 to 0)
Indicates the start timing of the display from the start PTS, and indicates 31 to 0/90000 (seconds). (2) Start effect mode (b15 to b12) 0000b: cut-in 0001b: fade-in 0010b: dissolve 0011b: wipe-from-top 0100b: wipe-from-bottom 0101b: wipe-from-left 0110b: wipe-from-right 0111b: Wipe diagonal left 1000b: Wipe diagonal right Other: Hold (3) End effect mode (b7 to b4) 0000b: Cut out 0001b: Fade out Other: (2) Start effect mode (b15)
Same as ~ b12)

FIG. 88 shows A in the case where the display timing mode (b3, b2) is the slide show (00b) and the display order mode (b1, b0) is random (01b) in the display mode of FIG.
87 shows an SV display list. This list is the same as the list shown in FIG. 87 except that 8 bits (b79 to b72) are reserved. FIG. 89 shows a display timing mode (b3, b) in the display mode of FIG.
2) is browserable (01b), and the display order mode (b1, b0) is sequential (00b).
FIG. 97 shows an ASV display list in the case of b). This list is the same as the list shown in FIG. 97 except that 8 bits (b55 to b48) are reserved. FIG. 90 shows that the display timing mode (b3, b2) is browserable (01b) in the display mode of FIG.
FIG. 14 shows an ASV display list when the display order mode (b1, b0) is random (01b);
This list is the same as the list shown in FIG. 87 except that 8 bits (b79 to b72) and 8 bits (b55 to b48) are reserved.

The encoding device and the decoding device are:
The above-described encoding method and decoding method can be also realized by storing a computer program in an IC chip such as a ROM and operating a CPU (Central Processing Unit) of the computer using the program. The present invention can be applied not only to transmission via a recording medium such as a DVD, but also to transmission via a communication line such as the Internet or a karaoke communication line and processing on a reproduction side by hardware or an application on a PC. Can be applied.

[0142]

As described above, according to the present invention, two types of audio objects are provided by the first pack having audio data as real data and the second pack having real-time information data relating to audio data as real data. (AOB), and a still picture set (SPS) is formed by a third pack having still picture data relating to audio data as actual data. Therefore, when the audio signal is mainly recorded, it is easily reproduced by the user. It is easy to use and real-time management can be simplified.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a first 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. 3 is an explanatory diagram showing a format of an audio title set (ATS) of FIG. 1 in detail.

FIG. 4 is an explanatory diagram showing a format of audio manager information (AMGI) of FIG. 2 in detail.

FIG. 5 is an explanatory diagram showing in detail a format of an audio title set attribute table (ATS-ATRT) of FIG. 4;

6 is an explanatory diagram showing the format of the audio title set attribute data (ATS-ATR) of FIG. 5 in detail.

7 is an explanatory diagram showing the format of the audio title set information (ATSI) of FIG. 3 in detail.

8 is an audio title set information management table (ATSI-MAT) shown in FIG. 7;
FIG. 3 is an explanatory diagram showing the format of the file in detail.

FIG. 9 shows the audio title set menu, audio stream, and attribute data (ATSM) shown in FIG.
FIG. 2 is an explanatory diagram showing (AST-ATR) in detail.

FIG. 10 shows an audio title set audio stream attribute table (ATS-AS) shown in FIG.
FIG. 4 is an explanatory diagram showing the format of (T-ATRT) in detail.

FIG. 11 is an explanatory diagram showing in detail attribute data (ATS-AST-ATR) of each audio stream in FIG. 10;

FIG. 12 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 of FIG. 12 in detail.

FIG. 14 shows the audio control (A-CO) shown in FIG.
It is an explanatory view showing the format of a (NT) pack in detail.

FIG. 15 is an explanatory diagram showing in detail a format of an audio character display (ACD) area in FIG. 14;

FIG. 16 is an explanatory diagram showing an example displayed by the namespace information of FIG. 15;

17 is an audio search data (ASD) shown in FIG. 14;
It is explanatory drawing which shows the format of an area in detail.

FIG. 18 is an explanatory diagram showing a modification of the audio content block unit of FIG. 1;

FIG. 19 is an explanatory diagram showing in detail a format of audio manager information (AMGI) in the second embodiment.

20 is an explanatory diagram showing the TOC information of FIG. 19 in detail.

FIG. 21 is an explanatory diagram showing the format of audio title set information (ATSI) of the third embodiment in detail.

FIG. 22 is an explanatory diagram showing a basic format of a DVD-Audio disc according to a fourth embodiment.

FIG. 23 is an explanatory diagram showing an audio data structure of the DVD-audio disc of FIG. 22.

FIG. 24 is an explanatory diagram showing a basic format of a DVD-Van disc.

FIG. 25 is an explanatory diagram showing a basic format of a DVD video disk.

FIG. 26 is an explanatory diagram showing a basic format of a DVD-Avd disk.

FIG. 27 is an explanatory diagram showing AOTT-AOB-ATR in the DVD-Audio disc of the fourth embodiment.

FIG. 28 is an explanatory diagram showing a private header of the linear PCM in the DVD-Avd disc of the fourth embodiment.

FIG. 29 is a block diagram showing an embodiment of an audio signal encoding device according to the present invention.

FIG. 30 is a block diagram showing the signal processing circuit of FIG. 29 in detail;

FIG. 31 is an explanatory diagram showing a data structure of the fifth embodiment.

FIG. 32 shows an audio object set (AOTT-AOB) for the audio-only title shown in FIG.
It is explanatory drawing which shows S) in detail.

FIG. 33 is an explanatory diagram showing an example of the audio pack of FIG. 32 in detail;

FIG. 34 is an explanatory diagram showing the private header of FIG. 33 in detail.

FIG. 35 is an explanatory diagram showing the UPC / EAN-ISRC data of FIG. 34 in detail.

FIG. 36 is an explanatory diagram showing a bit shift of the audio data of FIG. 33;

FIG. 37 is an explanatory diagram showing in detail the real-time information (RTI) pack of FIG. 32;

FIG. 38 is an explanatory diagram showing a still picture (SPCT) pack in detail.

FIG. 39 shows the audio title set information management table (ATSI) shown in FIG. 31;
FIG. 4 is an explanatory diagram showing (-MAT)) in detail.

40 shows an audio object attribute (AOTT-) for the audio-only title shown in FIG.
FIG. 3 is an explanatory diagram showing (OB-ATR) in detail.

FIG. 41 is an explanatory diagram showing in detail an audio-only title video object audio stream attribute (AOTT-VOB-AST-ATR) of FIG. 39;

FIG. 42 is an explanatory diagram showing the channel assignment information of FIGS. 40 and 41 in detail.

FIG. 43 shows the downmix coefficient (ATS-DM) shown in FIG.
FIG. 3 is an explanatory diagram showing (COEFT) in detail.

FIG. 44 is an explanatory diagram showing the still picture data attribute (ATS-SPCT-ATR) of FIG. 39 in detail;

FIG. 45 shows the audio title set program chain information table (A in FIG. 31);
FIG. 4 is an explanatory diagram showing TS-PGCIT) in detail.

FIG. 46 is an explanatory diagram showing the ATS-PGCIT information (ATS-PGCITI) of FIG. 45 in detail;

FIG. 47 is an explanatory diagram showing an ATS-PGCI search pointer (ATS-PGCI-SRP) in FIG. 45 in detail;

FIG. 48 illustrates the ATS-PGC category (ATS-PGC) of FIG.
FIG. 4 is an explanatory diagram showing the details of the PGCI-CAT.

FIG. 49 shows the audio title set program chain information (ATS-PG) shown in FIG.
FIG. 4 is an explanatory diagram showing CI) in detail.

FIG. 50 is an explanatory diagram showing the ATS-PGC general information (ATS-PGC-GI) of FIG. 49 in detail;

FIG. 51 shows the ATS-PGC contents (ATS
FIG. 3 is an explanatory diagram showing (PGC-CNT) in detail.

FIG. 52 is an explanatory diagram showing an ATS program information table (ATS-PGIT) in FIG. 49 in detail;

FIG. 53 is an explanatory diagram showing the ATS program information (ATS-PGI) of FIG. 52 in detail;

FIG. 54 shows the ATS-PG content (ATS-PG
FIG. 3 is an explanatory diagram showing (PG-CNT) in detail.

FIG. 55 is an explanatory diagram showing an ATS cell playback information table (ATS-C-PBIT) of FIG. 52 in detail;

FIG. 56 is an explanatory diagram showing the ATS cell playback information (ATS-C-PBI) of FIG. 55 in detail;

FIG. 57 shows the ATS-C type (ATS-CT) shown in FIG.
It is explanatory drawing which shows Y) in detail.

FIG. 58 is a block diagram illustrating an encoding device according to a fifth embodiment.

FIG. 59 is a flowchart showing a process of the encoding device in FIG. 58;

FIG. 60 is a block diagram illustrating a decoding device according to a fifth embodiment.

FIG. 61 is a block diagram functionally showing the decoding device of FIG. 60.

FIG. 62 is a flowchart showing the processing of the decoding device in FIGS. 60 and 61.

FIG. 63 is a block diagram showing a packing device for transmitting an audio signal according to the fifth embodiment.

FIG. 64 is a flowchart showing a packing process of the packing device of FIG. 63.

FIG. 65 is a flowchart showing the pack generation processing of FIG. 64 in detail.

FIG. 66 is a flowchart showing the ATS generation processing of FIG. 64 in detail.

FIG. 67 is a flowchart showing a transmission process of the packing device of FIG. 63.

FIG. 68 is a block diagram showing an unpacking device for transmitting an audio signal according to the fifth embodiment.

FIG. 69 is a flowchart showing a reception process of the unpacking device of FIG. 68.

70 is a flowchart showing an unpacking process of the unpacking device of FIG. 68.

FIG. 71 is a flowchart showing the ATSI decoding process of FIG. 70 in detail.

FIG. 72 is a flowchart showing the pack decoding process of FIG. 70 in detail.

FIG. 73 is an explanatory diagram showing an SPS (still picture set), that is, an ASVS (audio still video set) in FIG. 31 in detail;

74. FIG. 74 shows an ASVUI (audio still
FIG. 4 is an explanatory diagram showing video unit information in detail.

FIG. 75 shows an ASV-ADMAP (audio
FIG. 4 is an explanatory diagram showing a still video address map in detail.

FIG. 76 is an explanatory diagram showing ASVOBS (Audio Still Video Object Set) of FIG. 73 in detail;

FIG. 77 is an explanatory diagram showing the highlight information pack, the still picture pack, and the sub-picture pack in FIG. 76 in detail;

FIG. 78 is an explanatory diagram showing the highlight information of FIG. 77 in detail;

FIG. 79 is an explanatory diagram showing the still picture packet of FIG. 77 in detail;

FIG. 80 is an explanatory diagram showing the sub-picture packet of FIG. 77 in detail;

FIG. 81 is an explanatory diagram showing a display screen using the highlight information pack, still picture pack, and sub-picture pack shown in FIG. 78;

FIG. 82 is an explanatory diagram showing a modification of the data structure of FIG. 31;

FIG. 83: Still picture control information table (SPCIT) of FIG.
It is explanatory drawing which shows TS-ASV-PBIT (ATS audio still video playback information table) in detail.

84. ATS-ASV-playback information search pointer (ATS-PG-AS) in FIG. 83
FIG. 4 is an explanatory diagram showing V-PBIT-SRP # 1 to #m in detail.

FIG. 85 is an explanatory diagram showing the ASV display mode of FIG. 84 in detail;

86 is an explanatory diagram showing the ATS-ASV-PBI (ATS audio still video playback information) of FIG. 83 in detail;

FIG. 87 is an explanatory diagram showing the details of the ASV display list in FIG. 86;

FIG. 88 is an explanatory diagram showing another ASV display list in FIG. 86 in detail.

FIG. 89 is an explanatory diagram showing another ASV display list in FIG. 86 in detail.

FIG. 90 is an explanatory diagram showing another ASV display list in FIG. 86 in detail;

[Explanation of symbols]

A pack First pack AOB Audio object AOBS Audio object set ATSI Audio title set information ATSI-MAT Audio title set information management table RTI pack Second pack SPS Still picture set ASVS Audio still video set SPCT Pack 3rd Pack

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Norihiko Fuchigami 3-12-12 Moriyacho, Kanagawa-ku, Yokohama-shi, Kanagawa Japan F-term (reference) 5C053 FA07 FA13 FA24 GB01 GB05 GB06 GB11 GB12 GB21 GB37 GB38 JA21 JA22 JA23 JA24 JA30 KA05 LA14 5D044 AB05 AB08 DE17 DE39 DE49 DE52 DE54 GK08 5D110 AA17 AA26 AA28 BB08 DA17 DB01 DE01

Claims (33)

[Claims] A plurality of audio objects (AO)
B), comprising: an audio title set (ATS) including B) and a still picture set (SPS), wherein the AOB includes only a first pack having audio data as actual data; One AOB and a second pack having a second pack having real-time information data related to the audio data as actual data, and the SPS includes still picture data related to the audio data. An audio disc on which a data structure having a third pack is recorded. 2. The ATS includes audio title set information (AT) for managing the AOB set before and after the AOB set having the plurality of AOBs.
2. The audio disc according to claim 1, wherein the audio disc includes an SI). 3. The ATSI according to claim 2, wherein the ATSI includes an audio title set information management table (ATSI-MAT).
The described audio disc. 4. The audio disc according to claim 3, wherein the ATSI-MAT includes attribute data for reproducing audio data in the first pack as an analog signal. 5. The attribute data of the audio data,
5. The audio disc according to claim 4, further comprising a coefficient for downmixing multi-channel audio data into two channels. 6. The audio disc according to claim 3, wherein the ATSI-MAT includes attribute data for displaying a still picture in the third pack. 7. The audio disc according to claim 2, wherein the ATSI has information for managing a still picture in the still picture set (SPS). 8. The audio disc according to claim 2, wherein the ATSI has information for searching and reproducing a still picture. 9. The system according to claim 2, wherein the ATSI has information for temporally controlling a still picture.
7. The audio disc according to any one of 6 to 6, wherein 10. The ATSI indicates a mode for reproducing still pictures in browsable and sequential mode, a mode for reproducing in browsable and random mode, a mode for reproducing in slide show and sequential mode, and a mode for reproducing slide show and random mode. The audio disc according to any one of claims 2 to 6, further comprising mode identification information. 11. The ATSI includes an audio title set program chain information
7. The audio disc according to claim 2, further comprising a table (ATS-PBCIT). 12. The ATS-PBCIT according to claim 1, wherein:
12. The audio disc according to claim 11, further comprising an encoding mode of audio data in the pack of (1). 13. The ATS-PBCIT according to claim 1, wherein:
Chain information (ATS) for continuously playing back audio data in a pack
-PBCI).
2. The audio disc according to 2. 14. The ATS-PBCIT according to claim 1, wherein:
14. The audio disk according to claim 11, wherein when the audio data in the pack is bit-shifted, the audio data includes the bit-shifted data. 15. The ATS-PBCIT comprises the AO
The audio disc according to any one of claims 11 to 14, further comprising information indicating whether B is the first or second AOB. 16. The audio disc according to claim 1, wherein the first pack includes attribute data for reproducing audio data as an analog signal. 17. The method according to claim 1, wherein the second or third pack includes attribute data for displaying a still picture or for managing the copyright of a still picture. The audio disc according to any one of the above. 18. The audio disc according to claim 1, wherein the second or third pack includes side information for controlling a still picture page. 19. The audio disc according to claim 1, wherein the audio data in the first pack is a program stream defined in a system part of the MPEG2 standard. 20. Audio title set (ATS)
And a still picture set (SPS), wherein the SPS has one or more still picture units (SPUs), each of the SPUs has one or more still picture object sets (SPOBS), An audio disc on which a data structure in which each of SPOBS has a pack including still picture data is recorded. 21. The audio disc according to claim 1, wherein the SPS includes still picture set information for managing the SPOBS before and after the SPOBS. 22. A still picture set (SPS) including a plurality of still picture objects (SPOB), wherein the SPOB has substantially no highlight information pack and sub-picture pack, but has a still picture pack. First SPO
B and an audio disc on which a data structure composed of two types, a highlight information pack and a second SPOB having a sub-picture pack and a still picture pack, is recorded. 23. When the still picture pack has a pack header and a still picture packet, the still picture packet has a packet header and still picture data, and the still picture pack is the first pack of a still picture. 23. The audio disc according to claim 1, wherein information indicating the fact is provided in a packet header of the pack. 24. The method according to claim 24, wherein the still picture pack includes the SP.
The audio disc according to any one of claims 1 to 23, wherein, when the pack is the first pack of the OBS, information indicating that fact is provided in the packet header of the pack. 25. The sub-picture pack has a pack header and a sub-picture packet, the sub-picture packet has a packet header and sub-picture data,
25. The information processing apparatus according to claim 22, wherein when the sub-picture pack is the first pack of a sub-picture unit, information indicating the fact is provided in a packet header of the pack. Audio disc. 26. The method according to claim 26, wherein the sub-picture pack is the SPO
The audio disc according to any one of claims 22 to 25, wherein, when the pack is the first pack of the BS, information indicating that fact is provided in the packet header of the pack. 27. The ATS or SPS includes still picture control command information.
27. The audio disc according to any one of -26. 28. The audio disc according to claim 1, wherein a simple audio manager (SAMG) and an audio manager (AMG) are further arranged in the data structure. 29. An apparatus for encoding an audio signal, comprising means for formatting into a data structure as claimed in claim 1. Description: 30. An audio signal decoding device comprising means for decoding the data structure according to claim 1. Description: 31. A method for transmitting an audio signal, comprising transmitting the data structure according to claim 1 via a recording medium or a communication medium. 32. A recording medium for a computer program describing an encoding method comprising the step of formatting into a data structure according to claim 1. Description: 33. A recording medium for a computer program describing a decoding method having a step of decoding the data structure according to claim 1. Description: