JP2003123398A - Disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently record, reproduce and display character information showing contents when mainly recording the audio data of a music source or the like. SOLUTION: In an A pack, audio data are located and in a D pack, character information on the audio data and display time data therefor are located. The display time data in the D pack are separated to display start time data and display end time data by a display time decoder 51 and impressed to a start comparator 52 and an end comparator 53, and the character data are converted to dot matrix character data for display by a character data decoder 54 and stored in a buffer 55. The start comparator 52 and the end comparator 53 control the display time of characters by comparing the display start time and display end time data with the address of the A pack.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an audio signal
From a disc that stores character information and other information indicating the song title, etc.
A directory used to display the recorded information.
The present invention relates to a disk reproducing device. [0002] Conventionally, a tune of an audio signal of a music source has been used.
A medium that records character information such as names and other control information
Then, a CD (compact disk) is known.
In a conventional CD, when character information is recorded, P, Q,
R, W, S, T, U, V, W
Of which is recorded using a 6-bit channel from R to W
are doing. [0003] However, the CD
Indicates text information indicating the contents of the music source
Recorded because they are scattered in
Display while following the music source inside and changing instantly
It is difficult to indicate
Character (V) is displayed A-V effectively for source (A)
There is a problem that can not be. By the way, DVD (Digital Versatai)
Disc)-For video discs, movies and other moving images
When recording subtitles, etc.,
Recording. However, DVD
And mainly record audio data such as music sources
DVD audio discs
Is a problem that audio data allocation is reduced
There is. The present invention has been made in view of the above problems, and
Audio data and character information indicating its contents
The recorded information from the disc on which
To provide a disc playback device that can play
And [0006] The present invention solves the above problems.
In order to decide, it consists of the following means. That is,
The signal recording area and the main signal recording area are
Disc, and the recording area of the main signal has an audio
A first pack containing audio data and
Character information for reproduction with the audio data of
Information, display time control data for controlling the display time, and
A second pack containing the character set code of
Flag (RT) for identifying the content as character information related data.
A second pack having an I_INFO flag).
AMGI management information including information for controlling the reproduction of the pack 1
The first pack having a data structure in which
Audio title set comprising:
(ATS) is recorded and contains video data.
Opak and data controlling the video data are recorded
Disc player that plays unplayed discs.
Thus, at least the first pack and the
Playback means for playing back the second pack, and the playback means
Regarding audio data from the reproduced second pack
First decoding means for decoding character information;
Display time control from the second pack reproduced by the raw means
Second decoding the data and its character set code
Decoding means, and decoding by the first decoding means.
Decoded character information is decoded by the second decoding means.
Display time control data and its character set code.
Character information display means for displaying based on the
The audio data from the first pack played by the step
And third decoding means for decoding data.
Disc playback device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to FIGS.
A first embodiment of the invention will be described. FIG. 1 is suitable for the present invention.
Embodiment of an audio signal encoding device used
FIG. 2 shows the signal processing circuit of FIG. 1 in detail.
It is a block diagram shown. In each embodiment, a predetermined rule is used.
Explanation of DVD video standard as an example of case
I do. In FIG. 1, an analog audio signal A
Is a sufficiently high sampling frequency by the A / D converter 31.
Wave number (sampling period Δt), for example, at 192 kHz
Sampled and high-resolution 24-bit PC
Data converted to M signal and corresponding to high resolution curve α
Columns xb1, x1, xa1, x2, xb2, x3, xa2,.
xbi, x2i-1, xai, x2i,... This data sequence (xbi, x2i-1, xai, x
2i) is a signal processing circuit 32 and a memory 3 shown in detail in FIG.
3, then DVD formatting
Applied to the section 34. Referring to FIG. 2, the configuration of signal processing circuit 32
explain in detail. First, a low pass through a half band
The pass filter 36, for example, an FIR filter
Data sequence (xbi, x2i-1, xa) corresponding to the resolution curve α
i, x2i) to the band-limited low-resolution curve β
Corresponding data strings xc1, *, *, *, xc2, *, *, *, xc3, *, *,
*, ..., xci, *, *, *, ..., and then thin out the data "*" in this data string
The data strings xc1, xc2, xc3,..., Xci,. Here, the data sequence xci is an A / D converter
31 A / D converted digital data is band-limited
To reduce the sampling frequency to 1/4
Has become. The data sequence (xbi, x2i-1, xai, x
2i), the data xi is thinned out by the thinning circuit 38.
Then, data strings xb1, xa1, xb2, xa2,..., Xbi, xai,. The data strings xci, xbi, x
Based on ai, adder 39 acting as a difference calculator
The difference xbi-xci = [Delta] 1i xai-xci = [Delta] 2i is then calculated. Here, the difference data Δ1i and Δ2i are, for example, 2
4 bits or less, and the number of bits is fixed
May also be variable. The allocation circuit 40 includes a data string xci and
And difference data Δ1i and Δ2i as user data (see FIG. 4)
Packing (1 packet = 2034 bytes)
The user data is output to the DVD formatting unit 34.
In the case of 16 bits, a high-resolution sampling cycle is used.
Pack the data sequence with the wave number as user data,
Outputs the user data to the DVD formatter 34
You may make it. The video signal V is supplied to an A / D converter 31V
Is converted to a digital signal by the
Video signal is converted to MPEG format by V encoder 32V.
And then the user data shown in FIG.
And applied to the DVD formatting unit 34
Is done. Then, the DVD formatting section 34
Packing is performed in a format as shown in FIG. This
Formatted by the DVD formatter 34 of
The modulated data is modulated by the modulation circuit 35 according to the disc.
Modulation method, and based on this modulated data,
Is manufactured. FIG. 3 shows the format of a disk applied to the present invention.
FIG. 4 shows an audio pack of FIG.
Diagrams and diagrams detailing the format of video packs
5 is a format of the control (CONT) pack of FIG.
FIG. 6 shows the PCI data of FIG. 5 in detail.
FIG. 7 shows the data search information (D
FIG. 8 is an explanatory diagram showing SI) in detail, and FIG.
Theory showing the format of the information data (D) pack in detail
FIG. 9 is an audio character display of FIG.
Explanatory diagram showing the format of an (ACD) area in detail,
FIG. 10 is an example displayed by the namespace information in FIG.
FIG. 11 is the real-time information data of FIG.
(D) is an explanatory diagram showing another format of the pack in detail.
is there. FIG. 21 shows a DVD-Avd disc according to the present invention.
FIG. 22 is a view for explaining a data structure of a disk, and FIG.
FIG. 3 is a view for explaining a data structure of a DVD audio disc;
FIG. 23 is a view for explaining a conventional DVD disc structure.
You. FIG. 12 is a diagram showing a display applied to the present invention.
A block diagram showing a DVD playback device as an embodiment of a playback device.
FIG. 13 is a functional block diagram of the DVD player shown in FIG.
The block diagram shown in FIGS.
FIG. 16 is a flowchart for explaining raw processing, and FIG.
FIG. 2 is a block diagram showing the character display circuit of FIG. 2 and FIG. 13 in detail;
FIG. 17 is a block diagram showing a modification of the DVD reproducing apparatus of FIG.
FIG. 18 shows another modification of the DVD reproducing apparatus of FIG.
It is a block diagram shown. The format of a disc applied to the present invention
The DVD-Video part shown in FIG.
3 (b).
I have. The format of the DVD-video part is the first video
Manager (VMG) followed by multiple video ties
Torset (VTS)
On the other hand, DVD-Audio format supports this
Audio manager (AMG), followed by AMG
Each area of multiple audio title sets (ATS)
It consists of. Each VTS is the first VTS information
(VTSI) followed by one or more video components
Tents block set (VCBS) and last VTSI
On the other hand, each of the ATSs
ATS information (ATSI) of the head and it
Following one or more audio content block sets (A
CBS) and the last ATSI. AT
The performance time of each song in ACBS is set in real time in SI.
Is Each of the VCBSs is composed of a plurality of VCBs.
On the other hand, each ACBS is composed of multiple ACBs.
Have been. Each of the VCBs has one video title (Ti
tre) minutes, each of the ACBs correspondingly
This is for one album of Dio. VCB
Each (1 title) has a plurality of chapters (Chapter
r), while each of the ACBs (1 alba)
Correspondingly) to multiple tracks (Tracks)
It is composed of Chapters are part of titles
(PTT), and the tracks are part-of-title (P
TT). Each of the chapters includes a plurality of cells (CELL).
, While each of the tracks has a corresponding
And a plurality of indexes. Each of the cells
Each is composed of multiple VCB units (VCBU).
On the other hand, each of the indexes
Correspondingly composed of multiple virtual ACBs (ACBs)
I have. Each of the VCB unit and ACB has a plurality of packs.
And one pack consists of 2048 bytes.
ing. Each of the VCB units has a control panel.
(Hereinafter referred to as CONT pack)
Any number of video (V) packs for 1.0 second, audio
O (A) pack and sub-picture (SP) pack
It is configured. On the other hand, each of the ACBs can have any number of A
Real-time information data at intervals of 1.0 second or more with the pack
(D) It is composed of a pack. That is, ACB
Is a virtual unit; in fact, there are no packs that indicate boundaries.
No. The CONT pack is shown in detail in FIGS.
Information that controls the subsequent V-packs, etc.
It is. Also, as shown in FIG.
Data is arranged, and V packs are
For example, closed captions other than audio data
(CC) data is arranged. Also, as shown in FIG.
The D pack contains audio data in the A pack.
Character information and its display time are arranged. Adjacent A-packs A1 and A2 are
Signals are arranged so as to be related to each other.
In the case of Leo, L channel pack and R channel pack
It is arranged adjacently. In addition, the 5/6/8 channel
Similarly, adjacent channels are arranged adjacent to each other. Ma
If you want to display text when playing audio signals,
The A and D packs are placed adjacent to each other, and
When displaying video during the playback of a video signal,
And the A-pack are arranged adjacent to each other. A pack, V pack and D pack are shown in FIG.
As shown in the figure, 2034 bytes of user data (A data
4 bytes of pack start information for
And a 6-byte SCR (System Clock Reference:
System time reference value) information and 3-byte Mux rate information
14-byte pack with 1-byte stuffing
A header is added (1 pack = 2 in total)
048 bytes). In this case, the time stamp SC
R information is "1" in the first pack in the ACB unit.
And the same album
The time of the A pack in the system can be managed. Next, referring to FIG. 5 to FIG.
Will be described in detail. This CONT pack
In the DVD video standard, navigation packs, commonly known as
It is called a Bi (NV) pack, and a 14-byte pack
Header, a 24-byte system header, and a PCI
Presentation control information
Packet and DSI (data search information)
Option) composed of packets. PCI Play
This PCI packet is called control information.
Packet header and 1-byte substream ID
And 979 bytes of PCI data as detailed in Figure 6
(986 bytes in total).
The packet consists of a 6-byte packet header and a 1-byte sub
The stream ID and the 1017 byte
DSI data (1024 bytes in total)
G). The PCI data controls the reproduction of the VOBU.
Navigation data, as shown in detail in FIG.
60 bytes of PCI general information (PCI GI)
6-byte non-seamless angle information (NSML A
GLI) and 694-byte highlight information (HLI)
And 189 bytes of recording information (RECI)
It is composed of Here, VC in FIG.
BU is the same as VOBU in the DVD video standard.
You. Data search information (DSI) shown in FIG.
Searches for data and performs seamless playback of VOBU.
This is the navigation data to execute, and is detailed in FIG.
As shown, 32 bytes of DSI general information (DSI GI); and 148 bytes of seamless reproduction information (SML PB
I) and 54 bytes of seamless angle information (SML A)
GLI), 168 bytes of VOBU search information (VOBU SR)
I), 144 bytes of synchronization information (SYNCI), and 471 bytes of reserved area totaling 1017 bytes.
It is configured. On the other hand, as shown in FIG.
In addition, a 14-byte pack header and a 24-byte system
Header and a 1003 byte ACD (audio
Ractor real-time information data) packet and 1007
Byte SEC (sound effect control)
It is composed of a socket. ACD packet is 6 bytes
Packet header and 1-byte substream ID
And a 676-byte ACD (audio
Audio display) information and 294 bytes
Audio playback control information + 26-byte reserved area
Is composed of a total of 320 bytes. SEC Pake
The packet is also a 6-byte packet header and a 1-byte
Substream ID and 10 as shown in detail in FIG.
00 byte SEC (Sound Effect Control
Information) data. FIG. 9A and FIG.
FIG. 9B and FIG. 11B show a second example.
Is shown. ACD of 676 bytes in the first example
The information area has 48 bytes as shown in detail in FIG.
G general information area and 294 characters each
"1" and "2" information areas and 16-byte display time
Consists of a control data area and a 24-byte hold area
Have been. Each information area of the characters "1" and "2" is 93
Namespace area of bytes and 2 of 93 bytes each
Free space area and 15-byte data points
Data area. Namespace area
For example, in order to display a song name as shown in FIG.
31 bytes of 1/4 square character data for header and 62 bytes
Full-width and half-width text data for text are arranged. 1
Character display in the 6-byte display time control data area
A pack address (timing) as start time and end time
) Are arranged in 8 bytes. The 48-byte general information is, for example, 1
6 bytes of service level information and 12 bytes of language code
Code information, 6-byte character set code information, and 6 bytes.
Display item information of the site and the 2-byte "Previous ACD information
Information and the 6-byte hold information.
It is. The 16-byte service level information is
Size, display type, audio / video / SP distinction,
Trim, etc., and the characters are mandatory,
Map is optional. 6-byte character set
The code information consists of the characters "1" and "2" as in the video file.
Language is indicated by 2 bytes each, maximum 8 words in one file
Indicates a word. English is mandatory. The 6-byte character set code information is expressed in language
Can have up to 15 character codes corresponding to codes
The presence or absence and type of the language of characters "1" and "2" are
Indicated by light. A code example is shown below. 1. ISO646 2. ISO8859-1 3. The display item information of MS-JIS 6 bytes is the free space shown in FIG.
Source "1", "2", presence / absence of data pointer, ID
You. The namespace is mandatory, and the album
Name, music name and artist name
Describe. The SEC of 1000 bytes shown in FIG.
Effect control) The data content is optional.
For example, sound effects for 40 types of 25 bytes each
Consists of project control information. For one kind
The audio playback control information area contains a 20-byte graph.
Quick equalizer information and 3-byte level balance information
Information and 2-byte reverberation additional information are placed.
Selected by the user to control the sound quality of the audio signal.
You. These pieces of audio playback control information are distributed in the A-pack.
When the user plays the music that is placed,
Music genre (classical, jazz, rock, BG
M), and even in the same genre,
Playback sound according to the playing state, recording state, atmosphere, etc.
A so-called professional mixer is recommended for best quality.
Data. ACD and SEC are used for recording in the same pack.
Instead, you can record separately in separate packs
Good. That is, as a second example of the first embodiment, FIG.
As shown in FIG. 11 (A), it has a packet of ACD only
A pack and a packet of only SEC as shown in FIG.
A pack having a kit may be provided. In this case, the packet
The length of the packet can be set freely within the range of 2010 bytes.
You. Packet header is 1 to be the first of ACB
7 bytes, otherwise 14 bytes
It is. The private header is a substream ID (1
Byte), RTI-INFO flag which is pack type ID
It consists of a maximum of 12 bytes including data (1 byte).
Real-time information (1979 bytes) is pack type I
When the RTI-INFO flag D is “0000b”
ACD is recorded in the case of
Is recorded. The packs shown in FIGS.
Such a disk having a data structure applied to the present invention is structured.
Is done. By the way, as shown in FIG.
The data format of the disc is the video title set
(VTS) only, and as shown in FIG.
D Audio disc data format is audio
Only title set (ATS) is included. And FIG.
1 is a DVD-Avd (audio-AV
Data) disc, and a video title set (V
TS) and audio title set (ATS)
Including. This ATS is an audio manager (AM
G) and a plurality of ATS <1> and ATS <2>. Therefore, the format shown in FIG.
According to this, an audio-only tag with audio data
The first pack containing audio data for Ittle
And the audio data in the first pack.
Sound control information and application time to control its application time
A second pack containing control data;
An AMGI management area containing information for managing playback is located
DVD audio disc with the data structure
Will be revealed. Further, according to the format shown in FIG.
For example, if you have a dedicated audio
A first pack containing audio data,
Support for the audio data in the first pack
Application time control to control window control information and its application time
A second pack containing data and playing the first pack
And an AMGI management area containing information for managing
Together with the audio data and the video data.
To the title that contains the audio data
A pack, a third pack containing video data,
1. DVD DVD containing information for controlling the reproduction of the third pack
The navigation pack of the video standard, and the first and third
VMGI management area containing information for managing pack playback
DVD-Avd disk having a data structure in which a disk is arranged
Is realized. Next, with reference to FIG.
A method for reproducing a disc will be described. Depending on the way
For example, ATS <in FIG.
2> and ATS <1> and ATS <2> in FIG.
Access ACBS via ATSI with MGI
Can be regenerated. The method,
Uses AMGI to access video titles
Which indicates that. Therefore, the above two types of the present invention
Audio discs are available as a family of DVDs
Playback can be performed while maintaining compatibility with DVD. Next, referring to FIG.
DVD playback device will be described. On disk 1,
The data of the above structure is EFM modulated and recorded in pit format.
Has been recorded. Music by the operation unit 18 or the remote control device 19
When eye selection, playback, fast forward, stop operation, etc. are performed,
The control unit 23 controls the drive device 2 and the playback device in accordance with the operation.
17 during playback.
After the drive data is read by the drive device 2, the EF
M demodulated. In the reproducing device 17, this signal is output from the CONT
To the A-pack and D-pack detectors 9
It is. The CONT pack detector 3 detects C in the reproduced data.
Detects ONT pack and sets control parameters in parameter section
Set to 8, 14 and controlled by CONT pack
Controlled V packs are sequentially written to V pack buffer 4
No. The user in the V-pack written to the V-pack buffer 4
User data (video signal, sub-picture information)
The SCR in the V pack (see FIG. 4)
)), In the pack order, and in the CONT pack.
Extracted in order of output time based on PTS, then image
Converter 6, D / A converter 7, video output terminals 15, 1
It is output as an analog video signal via 5 '. This
These blocks 3 to 8 constitute a video processing unit 17V,
The video processing unit 17V is controlled by the control unit 23
Internal power switch control unit 30 turns on power switch SW
It works when it is set to. The A-pack and D-pack detectors 9
A and D are detected by detecting the A pack and D pack in the reproduced data.
The data is sequentially written to the pack buffer 10. A and D Pakba
User data in A-pack written in buffer 10
(Audio signal) is output to the SCR by the extracting unit 11.
Audio in TOC information based on pack order
In order from the pack specified based on search data etc.
The PCM converter 12, the D / A converter 1
3. Analog audio via the audio output terminal 16
It is output as an E signal. The display data in the D pack (FIG. 8,
Audio character display information AC shown in FIG.
D) is sent to the display signal generator 20 to generate a display signal.
This display signal is output via the display signal output terminal 22.
Or output to the built-in character display unit 21. FIG. 13 functionally shows the structure shown in FIG.
It is a block diagram. The reproducing means 2 is a drive shown in FIG.
In correspondence with the apparatus 2, the reproduction signal processing / separating means A / D (9, 1
0, 11, 14) are A-pack and D-pack detectors 9, A
And D-pack buffer 10, take-out unit 11 and parameters
Audio signal output means (12,
13) corresponds to the PCM converter 12 and the D / A converter 13
are doing. The character information output means 20 generates a display signal.
The display unit 21 corresponds to the character display unit 21 corresponding to the unit 20.
are doing. Also, the reproduction signal processing separation means V (3, 4,.
5 and 8) are CONT pack detector 3, V pack buffer
4, corresponding to the extraction unit 5 and the parameter unit 8,
The signal output means and the sub-picture information means (6, 7)
It corresponds to the image converter 6 and the D / A converter 7. Control hand
The stage 23 corresponds to the control unit 23. In FIG. 13, the control means 23 is the operation unit 1
8 or the remote control device 19
When a command signal is sent, it responds to the playback command.
By sending the same address control information signal to the reproducing means 2.
The target music is reproduced from the disc 1. Playback signal processing
The separating means A and D convert the reproduced data into an audio signal and text information.
Audio signal output means for separating audio signals into audio signals
(12, 13) to output the character information to the character information output means 2
Send to 0. The reproduction signal processing / separating means V converts the reproduction data into CO
Separated into NT information, video signal and sub-picture information
The CONT information is sent to the control means 23, and the video signal and
The picture information is stored in the video signal means and the sub-picture, respectively.
Send to information means (6, 7). An AMGI (audio manager)
Information), ATSI (audio title)
Set information) TO area
C information is added and recorded (TOC information is
In E, it is sometimes called SAPP), and the playback device is
The TOC information storage unit 14A is accessed by accessing the TOC information of
You can search for the beginning of a song by storing it in the composing memory
You. The TOC information includes the lead-in area of the CD.
Can be used. This TOC information is read at the start of reproduction.
And stored in the TOC information storage unit 14A,
When the cue reproduction of the movement is specified, the TOC information is stored.
The disk 1 is accessed with reference to the unit 14A. In addition,
This TOC information is also stored on disk 1 as shown in FIG.
Lead-in area (TOC area 1a shown)
, And at the start of reproduction, the TOC detection means 24
Independently accesses the TOC area 1a to access the TOC information.
The information may be stored in the information storage unit 14A. Next, referring to FIG. 14 and FIG.
-V-D using reproduction control information such as information and search information
The synchronous playback processing will be described. In FIG. 14, for example, a song or
When the beginning of the movement is specified, it corresponds to the specified position
Refer to the TOC information (step S1).
Calculate cell and index location based on TOC information
(Step S2). Then search the location (s
Step S3) When confirmed, A as shown in detail in FIG.
Perform synchronized playback of packs, V packs and D packs (step
Step S4 → S5). In FIG. 15, when the CONT pack is reproduced,
(Step S11) Next, when in the A pack and the V pack
Check whether the time information is the same time (step S1)
3). And if it is not the same time, CONT pack
Is adjusted by ± 1 pack (step S14), and then
Return to step S11 to reproduce the CONT pack
You. In step S13, the A pack and the V pack
A pack or D pack when the time information in
And the A-pack address or D-pack address
(SCR information) is incremented by one (step S
15), then V controlled by the CONT pack
Play back the pack and V-pack address (SCR information
) Is incremented by one (step S16). Next
Whether the A-pack or D-pack has finished playing
Is checked (step S17), and if not completed
Proceed to step S18, on the other hand, if
Proceed to step S20. At step S18, the reproduction of the V-pack
Check if it has finished, and if not,
The process returns to step S13.
Proceed to step S19. In step S19, the CONT package
Playback of the next V-pack controlled by the
In step S13, the
Return to In step S20, the next A pack or D pack
And the A-pack address or D-pack address
Increment by one, and then the V-pack regeneration is finished.
It is checked whether the process has been completed (step S21), and the process ends.
If not, the process returns to step S16.
If so, the process proceeds to step S23. In step S23, the CONT pack
Play the next V-pack controlled by V-pack
Increment the address by one and then at the end of the frame
It is checked whether the end (EOF) has been completed (step S24),
If it is not EOF, the process returns to step S13.
In the case of OF, the AVD synchronous reproduction processing is terminated.
You. For audio discs without CONT packs,
In this case, the synchronization shown in FIG. 15 is not required. Next, referring to FIG.
0 and 21 will be described in detail. Display time data in D pack
The display time decoder 51 displays the display start time data with the display start time data.
Display end time data is separated into
Applied to the comparator 52 and the end comparator 53.
It is. Also, character data in the D pack is
To dot matrix character data for display by the
The data is converted and stored in the buffer 55. Then, the start comparator 52 displays
Compare the start time data with the A-pack address being played,
When they match, the dot matrix
A read start control signal is sent and the display 56
A display ON control signal is sent to (21 '). Also,
The end comparator 53 is displaying the display end time data and reproducing.
A-pack addresses are compared, and when they match, the display time
To output the next character time data to the coder 51
Of the display 56 (2)
A display-off control signal is sent to 1 '). FIG. 17 shows a modification of the first embodiment.
The video processing unit 27V in the DVD playback device of FIG.
Audio-only playback device that does not play V-packs when omitted
Is shown. In this case, the reproduction signal processing separation means 9,
10, 11, 14 are audio signal output means 12, 1,
3 is before D-pack which controls the display of A-pack during output
Pre-reads the SEC information in the D pack of
4B. In this modification, the SEC information
Of the flat matrix display as display means 21.
It is configured to be displayed on the play 21 '. FIG. 18 shows another modification of the first embodiment.
And the lead-in area at the innermost periphery of the disc 1 (T in the figure).
It is additionally recorded in the OC area 1a), and when the reproduction is started, TO
C detecting means 24 independently accesses the TOC area 1a.
Stored in the memory constituting the TOC information storage unit 14A.
1 shows an audio-only playback device that performs audio playback. Also this
In the configuration, a professional mixer is included in the SEC packet shown in FIG.
Audio playback control information for playback at the sound quality recommended by
Information is recorded, the sound quality control information output means 31
A sound quality / level control processing means 32 is provided to control the control information.
The sound quality is controlled based on the sound quality. Note that, as shown in FIG.
If it is separated into D and SEC,
Provided in the reproduction signal processing / separating means 9 ',
25, the character information output means 20 and the sound quality /
It is supplied separately to the level control information output 31. This place
In this case, the configuration shown in FIG.
Control sound effects using the data and the control end time.
I can. Next, a second embodiment will be described. This
In the second embodiment, as in the first embodiment, the D pack
The ACD packet of the D-pack is shown in FIG. 9 (B).
As shown, character information is arranged, but display time data is arranged.
Not placed. Then, the display time data (8 × 2 bytes)
G) is the data search information in the CONT pack shown in FIG.
(471 bytes) in the reserved area (DSI)
You. Next, a third embodiment will be described. This
In the third embodiment, as in the first embodiment, the D-pack
The ACD packet of the D-pack is shown in FIG. 9 (B).
As shown, character information is arranged, but display time data is arranged.
Not placed. Then, the display time data (8 × 2 bytes)
G) and general display other than the display time data of up to 52 bytes
The control data is the data circuit in the CONT pack shown in FIG.
Allocated in the hold area (471 bytes) of switch information (DSI)
Is done. As an example of the general display control data,
Display with a larger number of pixels than the display 56 shown in FIG.
To display 2 × 8 character information on the device
8 bytes of display open as display control data for display
Start address (address according to the ACD display start address)
8), the same division number data of 8 bytes is arranged. FIG. 19 shows the format of the third embodiment.
Character display circuit for displaying the characters
Inter decoder 51, start comparator 52, end
Comparator 53, character decoder 54, buffer 55,
The display 56 has the same configuration as that of FIG. here
The buffer 55 and the display 56 are shown in FIG.
So, 15 double-byte characters (31 single-byte characters) per line x
It is configured to be able to display 2.5 lines of characters.
And And in the video display processor 59
V-RAM 59a has 2 × 8 sets as shown in FIG.
It has a capacity to store character information for minutes. The character display device shown in FIG.
A normal mode for displaying character information on the display 56,
2 × 8 sets of character information are output via the external output terminal 15 ″
There is a special mode for displaying on an external display device (not shown).
The operation in the normal mode is substantially the same as that in FIG. Sandals
In the normal mode, the display time data in the CONT pack
Data is displayed by the display time decoder 51 with the display start time data.
Display end time data is separated into
Applied to the comparator 52 and the end comparator 53.
It is. Also, character data in the D pack is
To dot matrix character data for display by the
The data is converted and stored in the buffer 55. Then, the start comparator 52 displays
Compare the start time data with the A-pack address being played,
When they match, the dot matrix
A read start control signal is sent and the display 56
A display ON control signal is sent to (21 '). Also,
The end comparator 53 is displaying the display end time data and reproducing.
A-pack addresses are compared, and when they match, the display time
To output the next display time data to the coder 51
Of the display 56 (2)
A display-off control signal is sent to 1 '). On the other hand, in the special mode, the display in the D-pack
The time data is the display start time by the display time decoder 51.
Data and display end time data.
Are the start comparator 52 and the end comparator 53
Is applied to the CPU 60 as well. Ma
Further, the character data in the D-pack is
Is converted to dot matrix character data for display by
This data is stored in the buffer 55. further,
Display start address in the CONT pack (ACD display open
The address according to the start address) and the division number data
Display control data decoder 58,
60 is applied. Then, the start comparator 52 displays
Compare the start time data with the A-pack address being played,
When they match, the dot matrix
Send a read start control signal, and
53 is the display end time data and the A-pack address being reproduced.
The display time decoder 51
Time to output the next set of display time data
Send a ringing signal. Then, the CPU 60 controls the general display control data.
Display start of each set decoded by the decoder 58
Display time decoder based on address and division number data
Display start time data of each set decoded by
Check the data and display processor
Write one set to V-RAM 59a in 59
Specify only the address. As a result, the data read from the buffer 55 is read.
One set of dot matrix data is
For the V-RAM 59a in the spray processor 59
The display start address and the division number data by the CPU 60.
Is written to the specified address based on
And the dot matrix data for 16 sets is VR
It is written to AM 59a. Video display process
The monitor 59 is the dot matrix data for the 16 sets.
Into a single-screen video signal, and this video signal
Output to external display device (not shown) via output terminal 15 "
Is done. As described above, according to the present invention, the
Character information and audio data related to audio data in Pack 1
Display time control data for controlling the display time of the second
Information for managing the reproduction of the first pack
A video containing video data placed in the MGI management area
Do not record data that controls Opak and video data.
Audio data, such as music sources,
Characters indicating their contents from discs recorded as
Information can be reproduced and displayed efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an audio signal encoding device applied to the present invention. FIG. 2 is a block diagram illustrating a signal processing circuit of FIG. 1 in detail; FIG. 3 is an explanatory diagram showing a format of a disc applied to the present invention. FIG. 4 is an explanatory diagram showing in detail the formats of the audio pack and the video pack of FIG. 3; FIG. 5 is an explanatory diagram showing a format of a control (CONT) pack of FIG. 3 in detail. FIG. 6 is an explanatory diagram showing the PCI data of FIG. 5 in detail. FIG. 7 is an explanatory diagram showing the data search information (DSI) of FIG. 5 in detail. 8 is an explanatory diagram showing the format of the real-time information data (D) pack of FIG. 3 in detail. FIG. 9 shows the audio character display (A) of FIG.
FIG. 3 is an explanatory diagram showing the format of a (CD) area in detail. FIG. 10 is an explanatory diagram showing an example displayed by the namespace information of FIG. 9; 11 is an explanatory diagram showing another format of the real-time information data (D) pack in FIG. 3 in detail. FIG. 12 is a block diagram showing a DVD playback device as one embodiment of a disc playback device according to the present invention. FIG. 13 is a block diagram functionally showing the DVD reproducing apparatus of FIG. FIG. 14 is a flowchart for explaining an AVD synchronous reproduction process. FIG. 15 is a flowchart for explaining an AVD synchronous reproduction process. FIG. 16 is a block diagram showing the character display circuit of FIGS. 12 and 13 in detail. FIG. 17 is a block diagram showing a modified example of the DVD reproducing apparatus of FIG. FIG. 18 is a block diagram showing another modified example of the DVD reproducing apparatus of FIG. FIG. 19 is a block diagram illustrating in detail a character display circuit according to a third embodiment. FIG. 20 is an explanatory diagram showing a recording area of the V-RAM in FIG. 19; FIG. 21 is an explanatory diagram showing a data structure of a DVD-Avd disk according to the present invention. FIG. 22 is an explanatory diagram showing a data structure of a DVD audio disc according to the present invention. FIG. 23 is an explanatory view showing the structure of a conventional DVD video disk. FIG. 24 is an explanatory diagram showing a method of reproducing the disc shown in FIGS. 22 to 24; FIG. 25 is a flowchart showing a discrimination process between a character information recording disk and a sound control recording disk. FIG. 26 is a block diagram showing a sound control circuit in detail. [Description of Signs] 1 Disc 2 Reproducing means 34 DVD formatting section (Formatting means) 51 Display time decoder (Second decoding means) 52 Start comparator 53 End comparator 54 Character data decoder (First decoding means) 55 Buffer 56 display (constituting character information display means with start comparator 52, end comparator 53, buffer 55) 58 general display control data decoder (second decoding means) 59 video display processor (constituting character information display means with CPU 60) 60 CPU

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G11B 27/10 G11B 27/34 P 27/34 S 27/02 H K (72) Inventor Norihiko Fuchigami Kanagawa 3-12 Moriyacho, Kanagawa-ku, Yokohama-shi F Victory term in Victor Company of Japan, Ltd. (reference) 5D110 AA15 AA27 BB25 CF05 CJ13 CJ15 DA11 FA02

Claims (1)

Claims: 1. A disc in which a recording area for an auxiliary signal and a recording area for a main signal are continuously arranged, wherein a recording area for the main signal includes a first area including audio data. Pack and
A second pack including character information to be reproduced together with the audio data in the first pack, display time control data for controlling the display time thereof, and the character set code, and the contents of the second pack are character information related data. A data structure in which a second pack having a flag (RTI_INFO flag) for identifying the presence of the second pack and an AMGI management area including information for controlling reproduction of the first pack are arranged;
An audio title set (ATS) including the first pack and the second pack is recorded, and a disc on which a video pack including video data and data for controlling the video data are not recorded is reproduced. A disk reproducing apparatus, comprising: a reproducing unit that reproduces at least a first pack and a second pack from the disk; and a first unit that decodes character information relating to audio data from the second pack reproduced by the reproducing unit. Decoding means; second decoding means for decoding display time control data and its character set code from the second pack reproduced by the reproducing means; and character information decoded by the first decoding means. Display time control data decoded by the decoding means and its character set code. And character information display means for displaying on the basis of the de, and a third decoding means for decoding the audio data from the first pack reproduced by the reproducing means, the disk reproducing apparatus having.