JP3377176B2 - Audio disc and decoding device - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an audio disc.
And a decoding device for audio signals.

[0002]

2. Description of the Related Art A CD (Compact Disc) is known as a conventional optical disc for audio reproduction. Also, a DVD (digital video disc) is known as an optical disc having a higher density than that of a CD.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In (hereinafter, referred to as DVD-video), a video signal is recorded as a main and an audio signal is recorded as a sub, and therefore, there are the following problems. (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 song title cannot be retrieved.

Further, since audio users have a wider range of usage than video, a simple reproduction method is required by providing a TOC (table of contents) area like a CD. However, with DVD-Video, a navigation control pack (CONT
Pack) and a plurality of video (V) packs and audio (A) packs to configure a video content block unit and control playback of V and A packs by the CONT pack. There is a problem that it cannot be easily played back and is inconvenient to use.

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

Therefore, the present invention provides an audio disc and a decoding device which can be easily reproduced by a user when an audio signal is mainly recorded and are convenient for use, and in which real-time management can be simplified. The purpose is to provide.

[0007]

In order to achieve the above object, the present invention comprises means described in 1) to 4) below.
That is,

1) A recording area has an audio title set (ATS) including a plurality of audio objects (AOB) and a still picture set (SPS), and the AOB has audio data as actual data. , A first AOB composed of only one pack, and a second AOB composed of the first pack and a second pack having real-time information data relating to the audio data as actual data. Further, the SPS has a third pack including still picture data relating to the audio data, and the ATS controls information for reproducing the plurality of AOBs in the reproduction order.
It has audio title set information (ATSI) including (ATS-PGCIT).
SI pages the still picture data in the SPS.
An audio disc, characterized in that it is formatted and recorded in a data structure, comprising control information (SPCIT ) for controlling . 2) The SPCIT includes m playback search pointers (PB ) including each display mode of still picture data.
I-SRP # 1 to #m) and n playback info
Formation list (PBI # 1 to #n) (however, m,
The audio disc according to claim 1, wherein n is an integer n ≦ m) . 3) A decoding device for a signal recorded on an audio disc according to claim 1, wherein still picture data is paged from audio title set information (ATSI) arranged in the recorded audio title set (ATS). Control information to control (SPC
Audio from a first decoding means for decoding (IT), a first pack arranged in the recorded ATS, a second pack, and a third pack arranged in a still picture set (SPS). Second decoding means for decoding the data, the real-time information data, and the still picture data, and at least the SPCI extracted from the first decoding means
A decoding device having an output means for controlling and outputting the still picture data fetched by the second decoding means based on T. 4) A decoding device for a signal recorded on an audio disc according to claim 2, wherein still picture data is extracted from audio title set information (ATSI) arranged in each of the recorded audio title sets (ATS). Control information for page control (SP
CIT) to decode m playback search pointers (PB ) including each display mode of still picture data.
I-SRP # 1 to #m) and n playback info
Formation list (PBI # 1 to #n) (however, m,
n is an integer satisfying n ≦ m) , a first decoding means for extracting the integer, and a first pack arranged in the recorded ATS,
And the second pack, and still picture set (SP
Second decoding means for respectively decoding audio data, real-time information data, and still picture data from the third pack arranged in S), a display mode, a reproduction search pointer, taken out from the first decoding means, And Playback
A decoding device for an audio signal, comprising: output means for extracting the still picture data extracted by the second decoding means alone or in synchronization with the audio data on the basis of the information list .

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing an embodiment of a DVD-video format and a DVD-audio format applied to the present invention, and FIG. 2 is an explanatory diagram showing the audio manager (AMG) format of FIG. 1 in detail. 3 is the audio title set (A
FIG. 4 is an explanatory view showing the format of TS) in detail, and FIG.
Audio Manager Information (AMG
1) is an explanatory view showing the format in detail, FIG. 5 is an explanatory view showing the format of the audio title set attribute table (ATS-ATRT) in FIG. 4 in detail, and FIG. 6 is an audio title set attribute data (ATS-ATRT) in FIG. FIG. 7 is an explanatory view showing the format of the audio title set information (ATSI) in FIG. 3 in detail, and FIG. 8 is an audio title set information management table (ATS) shown in FIG.
FIG. 9 is an explanatory diagram showing in detail the format of (I-MAT).
Is the audio title set menu audio stream attribute data (ATSM-AS
T-ATR) in detail, FIG. 10 is an explanatory diagram showing in detail the format of the audio title set / audio stream attribute table (ATS-AST-ATRT) in FIG. 8, and FIG. 11 is a diagram showing each audio stream in FIG. Attribute data (ATS-A
It is an explanatory view showing ST-ATR) in detail.

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

Here, in the DVD-audio disc described above, two stereo channels and 5/6/8 channels are used as audio signals in order to cope with a transitional period when the CD generation is changed to the DVD-audio generation. Both multi-channel signals are recorded. Further, it is considered that when this transition period elapses, only the 5/6/8 channel multi-channel signal is recorded. Further, even when only the multi-channel signal is recorded, it is possible to generate the 2-channel signal from the multi-channel signal by the downmix coefficient during reproduction. The generated 2-channel signal is positioned as simple reproduction.

1A and 1B show DVD-video and DVD-audio formats, respectively.
The VD-audio format is compatible with DVD-video although the area names are different. First, a DVD-video format is roughly divided into a video manager (VMG) at the beginning and each area of a plurality of video title sets (VTS) following the video manager (VMG).
Correspondingly, the audio format is composed of an audio manager (AMG) shown in detail in FIG. 2 and areas of a plurality of audio title sets (ATS) following the AMG as shown in detail in FIG.

Each of the VTSs is composed of the leading 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 leading ATS. Information (ATSI) followed by one or more audio content block sets (A
CBS) and the last ATSI. AT
In SI, the playing time of each song in 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 the DVD video and will not be described.

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 has one title of video (Ti
Each of the ACBs corresponds to one title of audio. Each VCB (1 title) is composed of a plurality of chapters, while each ACB (1 title) is composed of a plurality of tracks (Track). Chapters include Part of Title (PTT),
The track contains a Part of Title (PTT).

Each chapter has a plurality of cells (CELL).
On the other hand, each of the tracks is composed of a plurality of indexes corresponding to this. Each cell has multiple VCB units (VCBU)
On the other hand, each of the indexes is correspondingly composed of a plurality of ACB units (ACBU). Each of the VCB unit and ACB unit,
It is composed of a plurality of packs, and one pack is composed of 2048 bytes.

Each of the VCB units is composed of a leading control pack (hereinafter referred to as CONT pack), an audio (A) pack, a plurality of video (V) packs, and a sub-picture (SP) pack that follow, on the other hand,
Corresponding to this, each of the ACB units has a head audio control pack (hereinafter, A-CONT pack).
And a plurality of A packs and V packs following it.

Information for controlling the succeeding V pack is arranged in the CONT pack, and the T of the CD is arranged in the A-CONT pack.
Information for managing the subsequent A-pack audio signal, such as OC information, is arranged. Audio data is placed in the A pack, and video data in the V pack,
For example, closed caption (CC) data other than audio data is arranged.

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

The ATS (audio title set) is as shown in FIG. 3, audio title set information (ATSI) shown in detail in FIG. 7, audio content block set (ATSM-ACBS) for ATS menu, and ATS. It has an audio content block set (ATSA-ACBS) for titles, and ATSI for backup. ATSM-AC
Both BS and ATSA-ACBS have the same P
It has CI and DSI.

AMGI (Audio Manager Information) is shown in detail in FIG. 4. AMGI management table (AMGI-MA)
T) and-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) in detail in FIG. Text data manager (TXTDT-MG) ・ Audio manager menu cell (index)
Address table (AMGM-C-ADT),-Audio manager menu-Audio content block unit-Addressless map (AMGM-
ACBU-ADMAP).

ATS-ATRT (audio title set / attribute table) is shown in detail in FIG. 5, 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.

Each of the audio title set attribute data (ATS-ATR- # 1 to #n) is, as shown in detail in FIG. 6, ATS-ATR-EA (end address), And-Has 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 detail in FIG.
T) and-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-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 is, as shown in detail in FIG. 8, ATS-ID (identifier), ATS-EA (end address), and ATSI- EA ・ VERN (DVD audio spec 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. T-ATR
(ATSM audio stream attributes)
ATS-AST-Ns (the number of ATS audio streams), and ATS-AST-ATRT as shown in detail 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. 9, and the following data (1) is provided as an attribute of the encoded audio signal recorded on this disc. ~ (4) are arranged (other bits are reserved).

(1) Audio encoding mode (3 bits b63 to b6
1) 000b: Dolby AC-3 010b: MPEG-1 or MPEG-2 (without extension bitstream) 011b: MPEG-2 (with extension bitstream) 100b: Linear PCM audio 101b: Linear PCM audio (2ch + 5ch, 2ch)
Includes + 6ch and 2ch + 8ch. )

(2) Quantization / DRC (dynamic range control) information (2 bits b55, b54)-"11b" when the audio encoding mode is "000b" -The audio encoding mode is "010b" or " 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 / audio encoding mode is "100b", "101"
In case of "b", 00b: 16 bits 01b: 20 bits 10b: 24 bits 11b: reserved for stereo 2ch

(3) Sampling frequency fs (2 bits b53, b5
2) 00b: 48kHz 01b: 96kHz 10b: 192kHz for stereo 2ch (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.
As shown in detail in FIG. 11, the (ATS audio stream attribute table) has an ATS-AST-ATR for each of the audio streams # 0 to # 7.
Each of TS-AST-ATR is composed of 8 bytes (total of 64 bytes).

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

However, the number of (4) audio channels in this ATSM-AST-ATR is always 2 ch in the audio stream # 0, and the audio stream # 1 includes the front 3 ch. That is, for example, when an audio signal of one title is recorded in 2 + 6ch, a stereo signal of 2ch is output as audio stream # 0.
The front signal of 3ch out of 6ch to audio stream # 1 and the rear signal of 2ch and LFE.
The 1ch 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. 8 are both "3" as the usage data of streams # 0 to # 2. "
Is recorded.

When the analog audio signal of 2 + 6 ch is sampled at the following sampling frequency fs and quantized with the following number of quantization bits to be recorded, stereo 2 ch: 48 kHz, 20 bit front 3 ch: 96 kHz, 16 bits rear 2ch, LFE 1ch: 48 kHz, 16 bits (no thinning) Audio title set menu audio stream attribute data (ATSM-A
(1) Audio encoding mode 101b: Linear PCM audio (2ch + 5ch, 2ch)
Includes + 6ch and 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.

Also, the ATS of audio stream # 0
-For AST-ATR, (1) Audio coding mode 101b: Linear PCM audio (2ch + 5ch, 2ch)
Includes + 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) Thinned-out information 00b: Full (1/1) (9) Only thinned-out information 00b: Full (1/1) is recorded on LFE1ch.

Also, the ATS of the audio stream # 1
-For AST-ATR, (1) Audio coding mode 101b: Linear PCM audio (2ch + 5ch, 2ch)
Includes + 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) Stream thinning information 00b : Full (1/1) (9) Only LFE 1ch is thinned out information 00b: Full (1/1) is recorded.

The ATS of the audio stream # 2
-For AST-ATR, (1) Audio coding mode 101b: Linear PCM audio (2ch + 5ch, 2ch)
Includes + 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) Stream thinning information 00b : Full (1/1) (9) Thinning information 00b only for LFE1ch: Full (1/1) is recorded.

Next, the A pack in which the 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 seconds, and the ACB unit is 0.5.
It is composed of an arbitrary number of packs for 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 seconds of audio time, and is arranged so as to be completed within the range of 0.5 to 1.0 seconds at the break of the index. In addition, audio time (GOF: Group of Audio
A frame unit) is indicated by an A-CONT pack, and its data position is determined by the audio frame number, the first access unit pointer, and the number of frame headers. Also, the A pack immediately before the A-CONT pack is
Do not force padding in units of 0.5 seconds of audio time.

Adjacent A packs are arranged so that the audio signals are related to each other. For example, in the case of stereo, the L channel pack and the R channel pack are arranged adjacent to each other, and 5/6/8 channels are arranged. In the case of multi-channel, they are also arranged adjacent to each other. The V pack is arranged adjacent to the A pack when displaying an image during reproduction of an audio signal. Figure 13 shows the A and V packs.
As shown in, the 4-byte pack start information, the 6-byte SCR (System Clock Reference) value, and the 3-byte Mux rate for the 2034-byte user data (A data, V data). (Rate) information and 1-byte stuffing are added to a pack header of 14 bytes in total (1 pack = 2048 bytes in total). In this case, the SCR information, which is a time stamp, is set to "1" in the first pack in the ACB unit and is consecutive in the same title, so that the time of the A pack in the same title can be managed.

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, and a 1007
It is composed of a byte ASD (audio search data) packet. Also, 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 byte reserve area. The ASD packet also has a 6-byte packet header, a 1-byte substream ID, and 10 bytes as shown in detail in FIG.
It is composed of ASD (audio search data) of 00 bytes.

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 an area of 294 bytes for each character "1" of the first language and character "2" of the second language, each area of 93 bytes. The name space area is composed of two free space areas of 93 bytes each and a data pointer area of 15 bytes. In one of the namespace areas of the character "1" of the first language and the character "2" of the second language, data for displaying the music title in Japanese is arranged as shown in FIG. Data for displaying in English is placed in the namespace area of. The 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 It is composed of reservation information of. The 16-byte service level information indicates the display size, the display type, the audio / video / SP distinction, the stream, etc., the characters are mandatory (required), and the bitmaps are optional (optional). 12
As with the video file, the language code information of the byte indicates the language of the characters “1” and “2” in 2 bytes, and indicates a maximum of 8 languages in one file. English is Mandatory.

The 6-byte character set code information can have up to 15 character codes corresponding to the language code, and the presence or absence of the language of the characters "1" and "2" and the type are indicated by 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 space “1” and “2” shown in FIG. 15, the presence or absence of a data pointer, and the ID. The name space is the mandatory, and the title name, music name, and artist name must be described.

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

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 of the track (2 bytes: BCD), and the reserved area (2 bytes). The 16-byte current time information is 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 remaining of the title. Of the absolute time (4 bytes: BCD).

The 8-byte title set search information is
It is composed of the first sector number (4 bytes) of the title set and the last sector number (4 bytes) of the title set. The 8-byte title search information is composed of the first sector number (4 bytes) of the title and the last sector number (4 bytes) of the title. Four
The 04-byte track search information is composed of the title track and sector number (4 bytes × 99), the first track number of the title (4 bytes), and the last track number of the title (4 bytes).

The 408-byte index search information consists of the track index and sector number (4 bytes × 100), and the track's first index number (4
Byte) and the last index number (4 bytes) of the track. The 80-byte highlight search information is the track in-sector number (4 bytes x 1
0) and track out-sector number (4 bytes x 10)
It is composed by.

According to such a format, at the beginning of a plurality of A packs, the subsequent A packs such as the TOC information of the CD are recorded.
A-CONT for managing pack audio signals
Since the packs are arranged, the audio data is not integrated with the video data, and the recording capacity can be increased. In addition, the A-CONT pack can manage the audio time, and the A-CONT pack can extract simple character information such as the song title of the audio data.

In addition, the title in the A-CONT pack,
Since the TOC information such as the start address and the playing time is arranged, the information corresponding to the user's operation can be taken out from the A-CONT pack and the reproduction can be started even during the audio reproduction. 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 in the reproducing device, and the information according to the user's operation is stored in the memory. Can be immediately read from to start playback. Further, since it is not necessary to store a large amount of information such as program chain information (PGCI) in DVD-video, the disc can be efficiently managed.

Further, 1. When there is no image (V) data in the content, (1) search, random access to three layers of title, song, and index becomes possible. (2) Cue, time search, and random access in GOF (audio frame) units are possible. (3) The time for titles, songs, and indexes can be managed in real time.

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

Regarding video data, (1) search, random access to the three layers of title, PTT, and cell become possible. (2) It is possible to perform cueing for each video frame, time search, and random access. (3) The title, PTT, and cell time can be managed in real time. (4) The current time and remaining time in the PTT or title can be displayed and managed in video frame unit time.

The ACBU shown in FIG. 1B is A-CO.
Although the NT pack and the CONT pack are included, the V pack and the CONT pack may not be included as shown in FIG. In this case, the video signal is not recorded, but the recording capacity of the audio signal is increased, so the disk size can be reduced, and the playback function can be simplified. A device suitable for the device can be provided.

FIG. 19 is an explanatory view showing the format of the audio manager information (AMGI) in the second embodiment in detail, FIG. 20 is an explanatory view showing the TOC information in FIG. 19 in detail, and FIG. 21 is an audio in the third embodiment. Title set information (AT
It is an explanatory view 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 added to and recorded in an empty area of GI (Audio Manager Information), and the reproducing apparatus accesses this TOC information to find the beginning of the music. As an example, FIG. 20 shows general TOC information recorded in the lead-in area of a CD, and the same information is recorded three times. In addition, when recording on the DVD audio disc 1 of the present invention, it may be repeated as described above, or may not be repeated.

Here, the TO used in the CD
In the C information, the absolute time at which each movement indicated by the number starts when points = 00 to 99 is represented by minutes (PMIN), seconds (PSEC), and frames (PFRAME). Further, 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 when the lead-out area starts is minutes (PMI
N), seconds (PSEC) and frames (PFRAME). Therefore, the TOC information shown in FIG.
It indicates that 6 songs (or 6 movements) are recorded on the D audio disc 1 (point = 01 to
06). This TOC information is used instead of AMGI.
It may be recorded in an empty area of ATSI (Audio Title Set Information) as shown in FIG. 21, or it may be recorded in the reserved area (360 bytes) in the ACD packet of the A-CONT pack shown in FIG. You may do it.

Next, a fourth embodiment will be described.
FIG. 22 shows the format of the fourth embodiment of the DVD audio disc applied to the present invention, which does not include the VTS shown in FIGS. 24 to 26 but is constituted by only the ATS. And this ATS (directory)
Is a SAMG (Structure of Simple Audio Manager)
And an audio manager (AMG) shown in FIG.
23, and an audio manager menu (AMGM) for video and audio, and ATS <1> and ATS <2> managed by AMGI in AMG. ATS <1> and ATS <2> are shown in FIG. As shown, the A-CONT pack is not included and the A-pack and the RTI pack are used. Further, this RTI pack is not arranged much for the A pack, and about 1 pack is arranged every 0.5 seconds. Further, the still image pack is arranged at a predetermined position. SAMG is ATS <1> and ATS <2
It is an area in which the SAPP table (TOC) for finding the beginning of> is repeatedly described 8 times. This area can be defined as one independent file.

For reference, FIG. 24 shows a DVD-V.
An (video + audio navigation) disc format is shown, and this format is generally D
VD-Video title set (VT
S) and ANV title set (ANV-TS) as audio navigation (navigation) data. Further, in detail, the VTS has the same configuration as the DVD video disc shown in FIG. 1A and FIG. 25 described later, while the ANV-TS has the audio manager (AMG) shown in FIG. 1B and the VTS side. VTS <1> and VTS <2> of the AMG within the AMG, respectively.
ATS <1> and ATS <2> managed by I. Further, the format of the DVD video disc does not include ATS or ANV-TS as shown in FIG. 25 and FIG. 1A, but is composed of only VTS.

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

On the other hand, the ATS is a SAMG, an audio manager (AMG) shown in FIG. 1B, and an audio manager menu (AMGM) for video and audio.
And the audio data in the VTS <1> on the VTS side, and is managed by the AMGI in the AMG.
The S <1> and the VTS side do not form a pair, and are configured by the ATS <2> which is also managed by the AMGI in the AMG. Further, as shown in FIG. 23, the 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) is shown. This attribute data is 8 bytes (6
4 bits b63 to b0) and will be described in detail from the MSB side in order: 4-bit (b63 to b60) audio encoding mode; 1-bit (b59) downmix (DM) mode; 3-bit (b58 to b56) multi-channel structure; 4-bit (b55 to b52) channel group 1 quantization bit number Q1; 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) 5 channels (b36 to b32) of channel allocation, and 32 remaining bits (b31 to b0) It is constituted by cut areas. 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 coding 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) Reserved 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 permission 1b: Downmix stereo output prohibited (3) Multi-channel structure type (b58 to b56) 000b: Type 1 Others: Reserved

(4) Number of Quantization Bits for Channel Group 1 Q (b55
Up to b52) 0000b: 16 bits 0001b: 20 bits 0010b: 24 bits Other: Reserved (5) Number of quantization bits of channel group 2 Q (b51
-B48) -The number of quantization bits Q of channel group 1 is "0000.
In the case of "b", "0000b" -The number of quantization bits Q of channel group 1 is "0001"
In the case of "b", "0000b" or "0001b" -The number of quantization bits Q of channel group 1 is "0010"
In the case of "b", "0000b", "0001b" or "0010b" However, 0000b: 16 bits 0001b: 20 bits 0010b: 24 bits Others: 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 the sampling frequency fs1 of the channel group 1 is "0000b"-"0000b" or "000" when the sampling frequency fs1 of the channel group 1 is "0001b"
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 "-" 1000b "," 1001 "when the sampling frequency fs1 of the channel group 1 is" 1010b "
b ”or“ 1010b ”

The linear PCM mode is used in the disc of the fourth embodiment. As shown in FIG. 28, the private header of the linear PCM includes: 8-bit substream ID, 4-bit reserved area, 4-bit ISRC number, 8-bit ISRC data, 8-bit Private header length, 16-bit first access unit pointer, 1-bit audio emphasis flag F1
And 1-bit audio emphasis flag F2 and the like.

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

In FIG. 29, the analog audio signal A
Is sampled at a sufficiently high sampling frequency (sampling period Δt), for example, 192 kHz by the A / D converter 31, and, for example, a 24-bit high resolution P
Data string converted to CM signal and corresponding to high resolution curve α Is converted to. This data string (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 section 34.

The configuration of the signal processing circuit 32 will be described in detail with reference to FIG. First, a data string (xbi, x2i-1, x corresponding to the high-resolution curve α is formed by a low-pass filter 36 that passes a ½ band, for example, an FIR filter.
ai, x2i), the data string xc1, *, *, *, xc2, *, *, *, xc3, *, *, *, ..., xci, corresponding to the band-limited low-resolution curve β *, *, *, ... Then, by thinning out the data “*” from the data string by the thinning circuit 37, the data string xc1, xc2, xc3 ,. To generate. Here, the data string xci is a data string in which the sampling frequency is reduced to 1/4 by band limiting the digital data A / D converted by the A / D converter 31.

Further, the data string (xbi, x2i-1, xai, x
2i), the data string xb1, xa1, xb2, xa2, ..., Xbi, xai, ... Is generated by thinning out the data xi by the thinning circuit 38.

Then, these data strings xci, xbi, x
Based on ai, a difference xbi-xci = [Delta] 1i xai-xci = [Delta] 2i is calculated by the adder 39 acting as a difference calculator. 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 uses the data string xci and the difference data Δ1i and Δ2i as user data (see FIG. 13).
(1 packet = 2034 bytes) and outputs the user data to the DVD formatting unit 34.

Further, the video signal V is the A / D converter 31V.
Is converted into a digital signal by the V encoder 32V, and the digital video signal is encoded in the MPEG format by the V encoder 32V, then packed into user data shown in FIG. 13 and applied to the DVD formatting section 34. Then, the DVD formatting section 34 packs into a format as shown in FIGS. 1 to 18, for example. The data formatted by the DVD formatting unit 34 is modulated by the modulation circuit 35 by a modulation method suitable for the disc, and the disc is manufactured based on the modulated data.

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

The ATSs are, in order from the beginning: ATSI (ATS information); Audio object set (AOT) for audio-only titles shown in detail in FIGS.
T-AOBS) and ATSI for backup. A
The TSI is in order from the beginning. ATSI-MAT (AT
SI management table) and ATS-PGCIT (A shown in detail in FIGS. 45 to 57)
It is composed of 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-AOB is composed of a plurality of programs (PG), and each of the programs is composed of a plurality of cells (ATS-C).

As shown in detail in FIG. 32 (1), AOTT-AOB includes only audio data, and FIG.
As shown in detail in 2 (2), it is composed of two types of AOTT-AOB 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 piece of music.

First AOT containing only audio data
Each program of T-AOB includes a plurality of audio cells (A
TS-C), and this audio cell is composed only of a plurality of audio packs. Second AOTT-A including audio data and RTI data
Each OB program has a plurality of audio cells (ATS-
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 its breakdown 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.
To 2011 bytes of audio PCM data.

As shown in FIG. 34, the private header includes: 8-bit substream ID, 3-bit reserved area, 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 stuffing bytes of 0 to 8 bytes.

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

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

Linear PCM which is the actual data in the A pack
In the data area, the data bits of each channel of the group “2” are reduced and arranged in order to improve the S / N ratio and reduce the bits. FIG. 36A shows PCM data of 6 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
Bits), and the values of each channel Ch are as follows. Lmax2> Lmax1 = Lmax3>Lmax4>Lmax5> Lmax6 Then, the word lengths of Ch1 to Ch3 of the group “1” are left unchanged, and in this example, the value of Ch2 is the largest, so that each of Ch4 to Ch6 of the group “2” is Level (0
-Lmax2) Upshift by dB to reduce 0 to 4 bits on the LSB side. In the example shown in FIG. 36, Ch4 to C
Each level of h6 is upshifted by the maximum number of bits = 4 and reduced to 20 bits.

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

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

By the way, the still picture set (audio still video set) shown in FIG.
A CT pack is arranged, and this SPCT pack has a 14-byte pack header and SPC as shown in detail in FIG.
The SPCT packet is composed of a T packet, and 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 by the MPEG1 or MPEG2 system and is composed of an I picture and an intra coded picture, and is divided into one picture cell to be SPC.
It is arranged as SPCT data of T pack. In addition, S
Similarly, in the packet header of the PCT pack, the UPC / EAN-ISRC number and data relating to the still picture copyright may be included as described in the RTI pack.

The ATSI-MAT shown in FIG.
39 is composed of 2048 bytes (relative byte position RBP0 to 2047) as shown in detail in FIG. 39, and the ATS identifier (AT is 12 bytes (RBP0 to 11) sequentially from the beginning.
S-ID), 4 bytes (RBP12 to 15) ATS end address (ATS-EA), 12 bytes (RBP16 to 27) reserved area, 4 bytes (RBP28 to 31) ATSI End address (ATSI-EA), and 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).
End address of T, 60 bytes (RBP132 to 191) reserved area, 4 bytes (RBP192 to 195) V for AOTT
The start address of TS and A for AOTT of 4 bytes (RBP196 to 199)
OBS start address or VOBS start address for AOTT, 4 bytes (RBP200 to 203) reserved area, 4 bytes (RBP204 to 207) ATS-PGC
IT start address, 48 bytes (RBP 208 to 255) reserved area, 128 (16 x 8) bytes (RBP 256 to 383)
AOB attribute for AOTT (AOTT-A
OB-ATR) or VOB audio stream attributes for AOTT (AOTT-VOB-AST)
-ATR),-288 (18 x 8) bytes (RBP384-661)
, A coefficient for downmixing multi-channel audio data into two channels (ATS-DM-COEF
T # 0 to # 15), 32-byte (RBP672 to 703) reserved area, and 2-byte (RBP704 to 705) still picture data attribute (ATS-SPCT-ATR) in AOBS for AOTT. , 1342 bytes (RBP706 to 2047) reserved area.

128 (16 × 8) bytes (RBP256
~ 383), this ATS is A for AOTT.
In case of having OBS, AOTT shown in detail in FIG.
-AOB-ATR is described. This AOTT-AOB
-ATR (b127 to b0) is, 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 b108) The number of quantized bits Q1 of the channel group "1", the number of quantized bits Q2 of the channel group "2" of 4 bits (b107 to b104), and the number of quantized bits of the channel group "1" of 4 bits (b103 to b100) Sampling frequency fs1, ・ Sampling frequency fs2 of channel group "2" of 4 bits (b99 to b96), type of multi-channel structure of 3 bits (b95 to b93), and of 5 bits (b92 to b88) Channel allocation and: 8 bits × 11 (b87 to b0) reserved area.

On the other hand, this ATS is A for AOTT.
When it does not have OBS, AOTT-V shown in FIG. 41 is used.
OB-AST-ATR is described. This AOTT-V
The OB-AST-ATR (b127 to b0) is, 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 b112). b108) Quantization bit number Q
A 4-bit (b107 to b104) reserved area, a 4-bit (b103 to b100) sampling frequency fs, a 4-bit (b99 to b96) reserved area, and a 3-bit (b95 to b93) The type of multi-channel structure of 5 bit (b92 to b88) channel allocation, 3 bit (b87 to b85) decoding audio stream number, and 5 bit (b84 to b80) reserved area 2-bit (b79, b78) DRC for MPEG audio, 2-bit (b77, b76) reserved area, 4-bit (b75 to b72) number of compressed audio channels, 8-bit x 9 It is configured by the reserved area of (b71 to b0).

The above data are detailed below. However,
Since the number of quantization bits, sampling frequency, and multi-channel type are the same as those in FIG. 27, description thereof will be omitted. (1) Audio coding mode (b127 to b120) 00000000b: Linear PCM mode 00000001b: Reserved for compressed audio (Dolby Digital) 00000010b: Reserved for compressed audio (without MPEG2 extension) 00000011b: For compressed audio (with MPEG2 extension) Reserved 0000100b: Reserved for compressed audio (DTS) 00000101b: Reserved for compressed audio (SDDS) Others: Reserved for other encoding modes

(8) Channel allocation (b92 to b8
8) FIG. 42 shows channel allocation information of groups “1” and “2” from 1 channel (monaural) to 6 channels. By the way, the symbols shown in the figures 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) Number of decoding audio streams (b
87-b85) "0" or "1" (10) MPEG audio DRC (b79, b7)
8) 00b: There is no DRC data in the MPEG audio stream. 01b: DRC data exists in the MPEG audio stream.

(11) Number of compressed audio channels (b75 to b72) “1111b” when the audio encoding mode is linear PCM audio 0000b: 1ch (mono) 0001b: 2ch (stereo) 0010b: 3ch 0011b: 4ch 0100b: 5ch 0101b: 6ch 0110b: 7ch 0111b: 8ch Others: Reserved

In the area of 288 (18 × 16) bytes (RBP384 to 671) shown in FIG. 39, in order to downmix multi-channel audio data into two channels, as shown in FIG. "1
5 ”each downmix coefficient (ATS-DM-COEF
T # 0 to # 15) are described in 18 bits.

The two bytes shown in FIG. 39 (RBP704,
705) area 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: 2-bit (b15, b14) video compression mode; 2-bit (b13, b12) TV system; Aspect ratio of bits (b11, b10), 2-bit (b9, b8) display mode, 2-bit (b7, b6) reserved area, 3-bit (b5-b3) source picture resolution It is composed of a reserved area of 3 bits (b2 to b0).

The contents of the ATS-SPCT-ATR will be described in detail below. (1) Video compression mode (b15, b14) 00b: MPEG1 compatible 01b: MPEG2 compatible Other: Hold (2) TV system (b13, b12) 00b: 525/60 01b: 625/60 Other: Hold (3) Aspect ratio (B11, b10) 00b: 4: 3 11b: 16: 9 Other: Hold (4) Display mode (b9, b8) 00b: Hold 01b: Hold 10b: Letterbox only 11b: Do not write. (5) Source picture resolution (b5 to b3) 000b: 720 x 480 (525/60 system) 720 x 576 (625/60 system) Others: Hold

ATS-PGCIT shown in FIG. 31 (A)
(ATS Program Chain Information
The table) is in order from the top as shown in detail in FIG. 45. The audio title set PG shown in detail in FIG.
CI table information (ATS-PGCI
TI), n audio title set PGCI search pointers (ATS-PGCI) shown in detail in FIGS.
-SRP # 1 to #n) and a plurality of audio title sets PGCI shown in detail in FIG.

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

The above 4-byte ATS (b31 to b0)
As shown in detail in FIG. 48, the PGC categories are, in order from the beginning: 1-bit (b31) entry type; 7-bit (b30 to b24) ATS audio title number (ATS-TTN); 2-bit (B23, b22) block mode, 2-bit (b21, b20) block type, 4-bit (b19 to b16) audio channel number, 8-bit (b15 to b8) audio encoding mode It is composed of a reserved area of 8 bits (b7 to b0).

The above categories (ATS-PGC-CAT)
The details of the are described below. (1) Entry type (b31) 0b: Not entry PGC 1b: Entry PGC (2) Number of ATS audio titles (b30 to b24) The number of audio titles of this ATS is "1" to "99".
Describe in the range of. (3) Block mode (b23, b22) 00b: Not ATS-PGC of ATS-PGC block 01b: First ATS-PG of ATS-PGC block
C 10b: Suspended 11b: ATS-PG The last ATS-PG in the CBC block
C (4) Block type (b21, b20) 00b: Not a part of this block 01b: Difference block only in audio coding mode 10b: Difference block only in audio channel 11b: Difference between both audio coding mode and audio channel Block (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 in order from the beginning as shown in detail in FIG. 49. ATS-PGC general information (ATS-) shown in detail in FIGS. PGC-GI), ATS program information table (ATS-PGIT) detailed in FIGS. 52 to 56, and ATS cell playback information table (ATS-C-detailed in FIGS. 55 to 57). PBIT).

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

The above 4-byte ATS (b31 to b0)
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 is composed by. The number of programs is in the range of "1" to "99", and the number of cells is in the range of "1" to "255".

The ATS program information table (ATS-PGIT) shown in FIG. 49 is shown 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, the AT is composed of 20 bytes (RBP0 to 19), and sequentially from the beginning. ・ 4 bytes (RBP0 to 3) AT shown in detail in FIG.
S-PG content (ATS-PG-CNT), 1-byte (RBP4) ATS-PG entry cell number, 1-byte (RBP5) reserved area, 4-byte (RBP6-9) ATS -Start presentation time (FAC-S-PTM) of the first audio cell of PG
4 bytes (RBP10 to 13) ATS-PG playback time, 4 bytes (RBP14 to 17) ATS-PG pause time, 1 byte (RBP18) reserved area (copyright management Data CMI) and 1 byte (RBP19) reserved area.

2 bytes (b31 to 0) of ATS-P
As shown in detail in FIG. 54, the G content is a 1-bit (b31) relationship between the previous and current PGs (R
/ A), 1-bit (b30) STC discontinuity flag (STC)
-F), and the number of attributes of 3 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 (illustration *), 4-bit (b19 to b16) downmix coefficient table number (DM-COEFTN), 1-bit each, The RTI flags F15 to F0 each have a total of 16 bits (b15 to b0).

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

The 1-byte (b7 to b0) ATS-C type has a 2-bit (b7, b6) ATS cell element (ATS-) in order from the beginning as shown in detail in FIG.
C-COMP, 2-bit (b5, b4) reserved area, and 4-bit (b3-b0) ATS cell application (ATS-
C-Usage).

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

An encoding apparatus of the next fifth embodiment will be described. 58 and 59 show the configuration and processing of the encoding device, respectively. 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.
Is sampled and converted into, for example, a 24-bit high resolution PCM signal. In the subsequent bit shift / signal processing circuit 32, when compression is not performed, the PCM data converted by the A / D converter 31 is DV as it is.
It is applied to the D formatter 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.
It is applied to the formatting unit 34 (steps S5, S
6). The bit shift / signal processing circuit 32 also bit shifts each channel of the group “2”.

Further, the video signal V is the A / D converter 31V.
Is converted into a digital signal by the V encoder 32V, and the digital video signal is encoded in the MPEG format by the V encoder 32V and applied to the DVD formatting section 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 this digital still image signal SP is encoded in the MPEG format by the compression encoder 32SP and applied to the DVD formatting section 34 (step S3). , S4). Further, the copyright information and the real-time text information (RTI) are interface (I / F) 40.
The character information and the disc identifier EX are applied to the DVD formatting section 34 via (steps S7 and S8) (steps S9 and S10).

Then, the DVD formatting section 34 packs in the above-mentioned format (step S11). The data formatted by the DVD formatting unit 34 is modulated by the modulation circuit 35 by a modulation method according to the disc, and a disc is manufactured based on the modulated data, or is temporarily recorded in the recording unit 38, and communication is performed. It is transmitted via the I / F 39 (step S12).

FIG. 60 shows a specific structure of the decoding device of the fifth embodiment, and FIG. 61 functionally shows the structure of FIG. Further, FIG. 62 shows the processing. Figure 6
0, in FIG. 61, first, when a song 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, During reproduction, the pit data recorded on the DVD audio disc 1 is read by the drive device 2 and then EFM demodulated.

In the reproducing apparatus 17, this signal is sent to the still picture / V pack detecting section 3 and the A / RTI pack detecting section 9. When still picture packs and V packs are recorded on the disc 1, the still picture and V pack detection unit 3 detects the still picture packs and V packs in the reproduced data and sets control parameters in the parameter unit 8. At the same time, the still image pack and V pack are sequentially written in the still image and V pack buffer 4. The still image pack and the still image pack written in the V pack buffer 4 and the user data (video signal, still image information) in the V pack are stored in the still image pack by the buffer extracting unit 5, and the SCR in the V pack (see FIG. 13). Are extracted in the order of packs and in the order of output time, and then output as analog video signals through 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 detection unit 9 detects the A pack and the RTI pack in the reproduction data and sets the control parameters in the parameter unit 14, and the A pack and the RTI pack in the A and RTI pack buffer 10. Write sequentially. User data (audio signal, real-time information) in A pack and RTI pack written in A and RTI pack buffer 10
Is in the pack order by the buffer extraction unit 11, and
It is taken out in order of output time. Then, the audio signal is processed by the PCM conversion and bit shift / signal processing unit 12, D / A.
It 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 generation unit 20 to generate a display signal, and the display signal is output via the display signal output terminal 22 or the built-in character display unit 21.

The processing of this decoding device will be described with reference to FIG. First, the disk 1 is accessed to read the recorded data (step S20), and then in each of the separation steps S21 to S29, the video signal, the still image signal, the audio signal, the copyright information and the real-time information (RTI), and the character. Information and disc identifier (EX)
Are separated. Next, each decoding step S22 to S3
At 0, each separated data is decoded and then reproduced synchronously (steps S31 and S32).

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

When it is necessary to synchronize the still image with the audio, the time control signal for real-time synchronization is as shown in FIG.
1 (B) ATSI still picture
Control Information Table (SPC
Put it in the time control data information (SPCIT-TCDI) under IT).

Further, still picture page control command information (SPPI) containing a page turning command is placed under SPCIT. In this way, SPCIT is general information SPCIT General Information (SPCIT-GI).
, Time control data information (SPCIT-TCDI), and still picture page control command information (SPPI).

[0117] Here, the side picture for page control of the still picture can be included in the still picture data of the SPCT pack of Fig. 38. The page control data defined by this side information is interpreted and executed with reference to SPPI. If there is not enough capacity to store the still picture data, it is acceptable to include the side information for controlling the page of the still picture in the RTI data of the RTI pack.

Next, an embodiment in which the above-formatted digital audio signal is transmitted via a communication line will be described. First, the packing device on the transmitting side will be described with reference to FIGS. 63 to 67. The packing device includes a packing processing unit 30 as shown in FIG.
, Buffer memory 30B, and control circuit 29
And an operation unit 27 and a display 28. And
64 to 67, first, the video signal V, the still image signal SP, the audio signal A, and the real-time information R are shown.
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). Step S103), and then real-time text is generated (step S104).

Next, the cell (ATS-C) is managed (step S200), and then the PTT (part of title).
(Step S300), and then the title (AO
66 (step S400), and then the title set (AOTT-AOBS) is managed (step S500), and in step S600, a title set is generated as shown in detail in FIG. (Step S601) Next, a menu is generated (Step S602) Next, ATS-PGCI
Of the ATS-PGCIT by generating the PGCI including the PG content including the bit shift, and then generating the PGCI.
Is generated (step S604). Next, the ATSI is generated by generating the MAT of the attribute and the coefficient (step S605). Next, an AMG is generated (step S7
00), and finally, TOC is generated (step S80).
0).

Next, when transmitting the digital audio signal formatted as described above through the communication line, as shown in FIG. 67, the transmission data stored in the transmission buffer is divided into predetermined lengths. Then, the packet is packetized (step S41), a header including a destination address is added to the head of the packet (step S42), and the packet is output to the network (step S43).

Next, the data receiving side will be described with reference to FIGS. 68 to 72. As shown in FIG. 68, the unpacking device on the data receiving side includes an unpacking processing unit 60.
, Buffer memory 60B, and parameter memory 56
And 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 then the received data is restored (step S5).
2) and then transfer this to memory (step S5)
3).

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

Next, when reproduction is started, the pack is identified (step S1300), and in the subsequent step S1400, the audio pack is decoded as shown in detail in FIG. 72 (step S140).
1) and then decode the video pack (step S1
402), then the still image pack is decoded (step S1403), and then the real-time text is decoded (step S1404). Then, the audio signal, the video signal, the still image signal, and the real-time text signal decoded from each of these packs are output (step S1500), and the processes of steps S1300 to S1500 are 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. 73 to 80. Here, in order to avoid confusion with the sub picture (SP), the following still picture object set (SPOBS) is also included in the audio still video object set (ASVOBS).
Also say. As shown in FIG. 73, ASVS (audio
The still video set) includes ASVS information (ASVSI) shown in detail in FIGS. 74 and 75, the audio still video object set (ASVOBS) shown in FIG. 76, and backup ASV.
It is composed of SI.

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

ASVUI (total 888 bytes) is shown in FIG.
As shown in the following: 12-byte ASVS-ID, 2-byte number of ASVU, 2-byte reserved area, 4-byte ASVOBS start address, 4-byte ASVOBS end address, 2 Byte x 4 ASVU attributes # 0 to # 3
4 bytes x 16 ASVOBS subpicture palettes # 0 to # 15, and 8 bytes x 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 composed of the start address of the ASVUs # 1 to # 99.

Next, the audio still picture shown in FIG.
The video object set (ASVOBS) will be described. An audio still video object (ASVOB) is presentation data of one audio still video (ASV), and highlight (HLT) information data for a button and sub-picture (SP) data for the same button. And still picture (SPCT) data. However, ・ One still picture (SP) in one ASVOB
CT) data only.・ One highlight (HLT) in one ASVOB
It can contain only information data. The highlight information is used to operate the still picture buttons. -One ASVOB may include 1 to 3 sub-picture (SP) data depending on 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 a collection of the ASVOBs shown in FIG. ASVO
B is a highlight (HLT) as shown in FIG.
In order not to function as an HLT pack as an empty pack in which the pack is arranged at the head but does not include highlight information, the pack substantially including only the still picture (SPCT) pack and the high pack as shown in FIG. There are two types: a light (HLT) pack, a sub picture (SP) pack, and a still picture (SPCT) pack.

FIG. 77 shows the highlight (HLT) pack.
As shown in (a), it is composed of a 14-byte pack header, a system header, and a 2013-byte highlight information packet. 6 highlight information packets
Byte packet 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, and
It is composed of a rate bound of 3 bytes, an audio bound of 2 bytes, a limit flag of 1 byte, and a stream ID area of 9 bytes.

Highlight information (ASV-HLI) is shown in FIG.
8, ASV highlight general information (22 bytes) and ASV button color information table (8 bytes x
3) and ASV button information table (18 bytes x 3
6). ASV button information table is AS
Each of the ASV button information #i includes V button information # 1 to #n, and includes an ASV button command which is a picture control command. A navigation command when the button shown in FIG. 81 is operated is described in this ASV button command.

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. Start code, 6-byte SCR,
It consists of a program mux rate of 3 bytes and a stuffing length of 9 or 22 bytes.

The still picture (SPCT) packet includes a SPCT packet header and still picture video data, as shown in detail in FIG. This SPCT packet header is always provided at the beginning of 9 bytes of SPCT packet information, 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.

The sub picture (SP) packet includes an SP packet header and sub picture data, as shown in detail in FIG. This SP packet header is provided only for the 9-byte SP packet information that is always provided at the beginning and for the first SP packet of the SP unit.
SP packet information of byte and first SP of ASVOB
Includes 3 bytes of SP packet information provided only for packets. Then, based on such a data structure, on the decoder side, as shown in FIG. 81, the main picture, the sub picture and the highlight information are combined and displayed.

Next, the data structure of the modification of the fifth embodiment will be described with reference to FIG. Here, FIG.
In the data structure shown in FIG. 1 (B), the still picture control information table (SPCI
T) within the ATS, 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, sub-picture (SP)
In order to avoid confusion with
-PBIT (ATS audio still video playback information table).

As shown in detail in FIG. 83, this ATS-ASV-PBIT is additionally provided in the ATS-PBIT shown in FIG. 49, and m programs # 1 to #m shown in detail in FIGS. Each ATS-ASV-Playback information search pointer (ATS
-PG-ASV-PBI-SRP # 1 to #m), and FIG.
6 to 90, the n ATS-ASV-PBIs shown in detail
# 1 to #n (n ≦ m ≦ 99). This SRP # 1
Each of ~ to #m is, as shown in FIG. 84, a 1-byte ASVU number, and a 1-byte ASV display mode (ASV-DM).
OD), a 2-byte ATS-ASV-PBI start address, and a 2-byte ATS-ASV-PBI end address.

The ASVU number is a value in the range of "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. And modes. The above data are detailed below. (1) Display timing mode 00b: Slide show 01b: Browsable other: Hold (2) Display order mode 00b: Sequential 01b: Random 11b: Shuffle Other: Hold

Each of ATS-ASV-PBI # 1 to #n is 10 bytes × k (k ≦ 99) as shown in FIG.
Including the ASV display list of In FIG. 87, the display timing mode (b3, b2) is the slide show (00b), and the display order mode (b
ASV when 1, b0) is sequential (00b)
The display list is shown. This list is: ・ 8-bit (b79 to b72) ASV number ・ 8-bit (b71 to b64) reserved area ・ 8-bit (b63 to b56) forced at ASV start Button number selected for (FOSL-BTN
N), 8-bit (b55-b48) program number to be played back at the start of ASV, 8-bit x 4 (b47-b16) display start timing (31-0), 4-bit ( b15 to b12) start effect mode, 4-bit (b11 to b8) start effect period, 4-bit (b7 to b4) end effect mode, and 4-bit (b3 to b0) end effect period It is composed of and.

The contents of the above data will be described in detail below. (1) Display start timing (31-0)
Indicates the display start timing from the start PTS and represents 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 light 0111b: Wipe diagonal left 1000b: Wipe diagonal right Other: Hold (3) End effect mode (b7 to b4) 0000b: Cutout 0001b: Fade out Other: (2) Start effect mode (b15)
~ B12) same as

FIG. 88 is an A when the display timing mode (b3, b2) is the slide show (00b) and the display order mode (b1, b0) is the random (01b) in the display mode of FIG.
FIG. 87 shows the SV display list, which is the same as the list shown in FIG. 87 except that 8 bits (b79 to b72) are reserved. 89 shows the display timing mode (b3, b) in the display mode of FIG.
2) is browsable (01b) and the display order mode (b1, b0) is sequential (00
The ASV display list in the case of b) is shown, and 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 in the display mode of FIG. 85, the display timing mode (b3, b2) is browsable (01b),
Shows the 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 above encoding device and decoding device are
The encoding method and the decoding method may be stored in an IC chip such as a ROM as a computer program, and the program may be used to operate a CPU (central processing unit) of the computer. The present invention is also applicable not only when transmitting via a recording medium such as a DVD, but also when transmitting through a communication line such as the Internet or a karaoke communication line and processing on the reproducing side by hardware or an application on a PC. Can be applied.

[0142]

According to the present invention as described above, according to the present invention, O
For users who mainly record audio signals
It can be played easily and is easy to use.
Time management can be simplified.

[Brief description of drawings]

FIG. 1 is a DVD-Video format and suitable for the present invention.
It is explanatory drawing which shows 1st Embodiment of the format of DVD-audio used .

FIG. 2 is an explanatory diagram showing in detail a format of an audio manager (AMG) shown in FIG.

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

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

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

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

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

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

9 is a diagram showing the audio title set menu audio stream attribute data (ATSM) of FIG.
It is an explanatory view showing in detail (-AST-ATR).

10 is an audio title set / audio stream attribute table (ATS-AS) of FIG. 8;
It is an explanatory view showing the format of (T-ATRT) in detail.

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

12 is an explanatory diagram showing an audio content block unit (ACBU) of FIG. 1. FIG.

FIG. 13 is an explanatory diagram showing in detail formats of the audio pack and the video pack of FIG. 12;

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

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

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

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

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

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

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

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

FIG. 22 is an explanatory diagram showing a basic format of a DVD-audio disc according to the 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 disc.

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

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 a 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 apparatus applied to the present invention.

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.

32 is an audio object set for audio-only title of FIG. 31 (AOTT-AOB);
It is explanatory drawing which shows S) in detail.

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

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

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

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 is an audio title set information management table (ATSI of FIG. 31).
-MAT)) is a detailed explanatory diagram.

FIG. 40 is an audio object attribute for audio-only title of FIG. 39 (AOTT-
It is explanatory drawing which shows AOB-ATR) in detail.

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

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

FIG. 43 is a downmix coefficient (ATS-DM) of FIG.
It is explanatory drawing which shows -COEFT) in detail.

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

[FIG. 45] An audio title set program chain information table (A in FIG. 31)
It is explanatory drawing which shows TS-PGCIT) in detail.

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

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

FIG. 48 is an ATS-PGC category (ATS-
It is an explanatory view showing (PGCI-CAT) in detail.

FIG. 49 is an audio title set program chain information (ATS-PG) shown in FIG. 45.
It is explanatory drawing which shows CI) in detail.

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

51 is an ATS-PGC content (ATS of FIG. 50);
-PGC-CNT) is an explanatory diagram showing in detail.

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

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

54 is the ATS-PG content of FIG. 53 (ATS-
It is an explanatory view showing in detail (PG-CNT).

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

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

57 is an ATS-C type (ATS-C-T in FIG. 56);
It is an explanatory view showing Y) in detail.

FIG. 58 is a block diagram showing an encoding device of the fifth embodiment.

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

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

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

FIG. 62 is a flowchart showing 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 a fifth embodiment.

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

65 is a flow chart showing in detail the pack generation process of FIG. 64. FIG.

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

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

[Fig. 68] Fig. 68 is a block diagram illustrating an unpacking device when transmitting an audio signal of the fifth embodiment.

69 is a flowchart showing a receiving 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 detailed flowchart of the ATSI decoding process of FIG. 70. FIG.

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

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

74 is a diagram showing the ASVUI (audio still
It is an explanatory view showing in detail video unit information).

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

76 is an explanatory diagram showing in detail ASVOBS (audio still video object set) of FIG. 73;

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

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

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

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

81 is an explanatory diagram showing a display screen based on the highlight information pack, still picture pack, and sub picture pack of FIG. 78. FIG.

82 is an explanatory diagram showing a modified example of the data structure of FIG. 31. FIG.

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

84 is an ATS-ASV-playback information search pointer (ATS-PG-AS) of FIG. 83;
It is explanatory drawing which shows V-PBIT-SRP # 1- # m) in detail.

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

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

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

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

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

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

[Explanation of symbols]

A pack 1st pack AOB audio object AOBS audio object set ATSI audio title set information ATSI-MAT audio title set information management table RTI pack 2nd pack SPS still picture set ASVS audio still video set SPCT Pack 3rd pack

─────────────────────────────────────────────────── --Continued from the front page (56) References JP-A-9-259572 (JP, A) JP-A-10-83661 (JP, A) JP-A-8-339663 (JP, A) JP-A-8- 339662 (JP, A) JP-A-8-263969 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 20/10-20/16 G11B 27/00-27/08 H04N 5/91-5/95

Claims (4)

(57) [Claims] 1. A recording area has an audio title set (ATS) including a plurality of audio objects (AOB) and a still picture set (SPS), wherein the AOB has audio data as actual data. Of the first pack and a second AOB of the first pack and a second pack having real-time information data relating to the audio data as actual data. Further, the SPS has a third pack including still picture data relating to the audio data, and the ATS reproduces the plurality of AOBs in the reproduction order.
Control information (ATS-PGCIT) for audio title set information (ATSI), and the ATSI has control information (SPCIT ) for page control of the still picture data in the SPS. An audio disc, which is characterized by being formatted and recorded in a data structure. 2. The SPCIT is m playback search pointers (PBI-SRP # 1 to #m ) including each display mode of still picture data and n playbacks.
Information list (PBI # 1 to #n) (only
And m and n are integers satisfying n ≦ m) . 3. A decoding device for a signal recorded on an audio disc according to claim 1, wherein a still picture is generated from audio title set information (ATSI) arranged in the recorded audio title set (ATS). Data is paginated
First decoding means for decoding control information (SPCIT) to be controlled, first pack and second pack arranged in the recorded ATS, and still picture set (SPS)
Second decoding means for decoding the audio data, the real-time information data, and the still picture data from the third pack arranged in the first pack, and S extracted from at least the first decoding means.
A decoding device comprising: output means for controlling and outputting the still picture data taken out by the second decoding means based on PCIT. 4. A decoding device for a signal recorded on an audio disc according to claim 2, wherein each of the recorded audio title sets (ATS) is recorded.
Page the still picture data from the audio title set information that is placed in (ATSI)
The control information (SPCIT) to be controlled is decoded, and m reproduction search pointers (PBI-SRP # 1 to #m) including each display mode of still picture data and n playback information lists ( PBI # 1
~ # N) (where m and n are integers satisfying n≤m) , a first decoding unit for extracting the first pack, a second pack, and a still picture arranged in the recorded ATS. Set (SPS)
Second decoding means for respectively decoding audio data, real-time information data, and still picture data from the third pack arranged in the first pack, and a display mode, a reproduction search pointer, and a play extracted from the first decoding means. Back in
Based on the formation list , the still picture data retrieved by the second decoding means is
Alternatively, an audio signal decoding device, comprising: output means for extracting in synchronization with the audio data.