JP3248680B2 - Disc playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention provides a character information other indicating, for example, title of the audio signal from the recorded disc
A directory used to display those recorded information.
The present invention relates to a disk reproducing device .

[0002]

2. Description of the Related Art Conventionally, a CD (Compact Disc) is known as a medium on which character information such as the title of an audio signal of a music source and other control information are recorded.
In a conventional CD, when character information is recorded, P, Q,
Recording is performed by using a 6-bit channel from R to W among 8-bit subcodes of R, W, S, T, U, V, and W.

[0003]

However, in a CD, character information indicating the contents of a music source and the like are scattered and recorded on a disc, and are recorded, for example, following a music source being reproduced and instantaneously. Therefore, there is a problem that the character (V) cannot be effectively displayed on the music source (A) being reproduced during the AV.

In the case of a DVD (Digital Versatile Disc) -video disc, when recording a subtitle superimposed on a moving image such as a movie, the video is continuously arranged and recorded. However, when considering a DVD audio disk that mainly records audio data such as a music source on a DVD, this method has a problem that the allocation of audio data is reduced.

[0005] The present invention has been made in view of the problems described above, and audio data such as music source, character information indicating the contents of its
It is an object of the present invention to provide a disc reproducing apparatus capable of displaying the recorded information from a recorded disc .

[0006]

This prior invention SUMMARY OF THE INVENTION consists following means to achieve the above object. That is, the auxiliary signal
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 the audio data and
Character information on the audio data and its display
Pack containing display time control data for controlling the interval
And AM including information for controlling reproduction of the first pack.
A data structure in which a GI management area is arranged;
Audio tie including a first pack and the second pack
Torset (ATS) is recorded and video data
And a data pack for controlling the video data.
Disc to play discs that do not
A raw device, wherein at least a first
Reproducing means for reproducing the click and the second pack, the reproduction
Audio data from the second pack played by the means.
Decoding means for decoding character information relating to data
From the second pack reproduced by the reproducing means.
Second decoding means for decoding the time control data
And a character decoded by the first decoding means.
A table obtained by decoding information by the second decoding means.
Character information display means for displaying based on the indicated time control data
And a disk reproducing apparatus having the following.

[0007]

[0008]

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

[0018]

[0019]

[0020]

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is suitable for the present invention.
Block diagram illustrating one embodiment of the encoding apparatus of use are Ru audio signal, FIG. 2 is a block diagram showing in detail the signal processing circuit of FIG. In each embodiment, the DVD video standard will be described as an example of the predetermined standard.

In FIG. 1, an 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 is, for example, a 24-bit high resolution PC
Are converted into M signals and correspond to a data sequence 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 memory 3 shown in detail in FIG.
3 and then applied to the DVD formatting unit 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, xa) corresponding to the high-resolution curve α is formed by a low-pass filter 36 that passes a half band, for example, an FIR filter.
i, x2i), a data sequence xc1, *, *, *, xc2, *, *, *, xc3, *, *, corresponding to the band-limited low-resolution curve β
*,..., Xci, *, *, *,..., And by thinning out the data "*" from the data string by the thinning circuit 37, the data string xc1, xc2, xc3,. , Xci, ... are generated. Here, the data sequence xci is a data sequence in which the digital data A / D converted by the A / D converter 31 is band-limited and the sampling frequency is reduced to 1/4.

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

Then, these data strings xci, xbi, x
Based on ai, the adder 39 acting as a difference calculator calculates the difference xbi−xci = Δ1i xai−xci = Δ2i. Here, the difference data Δ1i and Δ2i are, for example, 2
It is 4 bits or less, and the number of bits may be fixed or variable.

The allocation circuit 40 packs the data sequence xci and the difference data Δ1i, Δ2i into user data (see FIG. 4) (1 packet = 2034 bytes), and outputs the user data to the DVD formatting unit 34.
Also, in the case of 16 bits, a data string with a high resolution sampling frequency is packed as user data,
The user data may be output to the DVD formatting unit 34.

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

FIG. 3 is an explanatory diagram showing a format of a disc that will be applied to the present invention, FIG. 4 is an explanatory view showing in detail a format of the audio pack and the video pack of FIG. 3, FIG. 5 is the control of FIG. 3 (CONT) pack FIG. 6 is an explanatory view showing the PCI data of FIG. 5 in detail, and FIG. 7 is an explanatory view showing the PCI data of FIG. 5 in detail.
FIG. 8 is an explanatory diagram showing the format of the real-time information data (D) pack of FIG. 3 in detail, FIG. 9 is an explanatory diagram showing the format of the audio character display (ACD) area of FIG. 8 in detail,
FIG. 10 is an explanatory diagram showing an example displayed by the namespace information of FIG. 9, and FIG. 11 is an explanatory diagram showing another format of the real-time information data (D) pack of FIG. 3 in detail. FIG. 21 is a diagram illustrating a data structure of a DVD-Avd disk according to the present invention, FIG. 22 is a diagram illustrating a data structure of a DVD audio disk according to the present invention,
FIG. 23 is a diagram for explaining a conventional DVD disk structure.

FIG. 12 is a block diagram showing a DVD reproducing apparatus as one embodiment of the disk reproducing apparatus according to the present invention. FIG. 13 is a block diagram showing the DVD reproducing apparatus of FIG. FIG. 16 is a flowchart for explaining the AVD synchronous reproduction processing, FIG. 16 is a block diagram showing the character display circuit of FIGS. 12 and 13 in detail, and FIG.
Is a block diagram showing a modified example of the DVD playback device of FIG. 13;
FIG. 18 is a block diagram showing another modified example of the DVD reproducing apparatus of FIG.

The format of the applied Ru disk to the invention is constituted by broadly divided into the illustrated DVD- Audio unit 3 shown in (a) DVD- video unit and FIG. 3 (b). The format of the DVD-video unit is composed of a head video manager (VMG) and the following areas of a plurality of video title sets (VTS), while the format of the DVD-audio unit is correspondingly the audio manager (VMS). AMG) and a plurality of audio title sets (ATS) following the AMG.

Each of the VTSs is composed of the first VTS information (VTSI), followed by one or more video content block sets (VCBS) and the last VTSI, while each of the ATSs corresponds to the first ATS. Information (ATSI) followed by one or more audio content block sets (A
CBS) and the last ATSI. AT
The performance time of each music piece in the ACBS is set in SI in real time.

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 video title (Ti
tre), and each of the ACBs is corresponding to one audio album. Each VCB (one title) has a plurality of chapters (Chapter).
r), while each ACB (one album) is correspondingly composed of a plurality of tracks (Tracks). Chapters include Part of Title (PTT) and tracks contain Part of Title (PTT).
TT).

Each of the chapters includes a plurality of cells (CELL).
On the other hand, each of the tracks is correspondingly constituted by a plurality of indices. Each of the cells is constituted by a plurality of VCB units (VCBU), while each of the indexes (Index) is correspondingly constituted by a plurality of virtual ACBs (ACB). Each of the VCB unit and the ACB is composed of a plurality of packs, and one pack is composed of 2048 bytes.

Each of the VCB units has a control pack (hereinafter, referred to as a CONT pack) of 0.4 to
It is composed of an arbitrary number of video (V) packs, audio (A) packs, and sub-picture (SP) packs for 1.0 second. On the other hand, each of the ACBs can be any number of A
It is composed of a pack and a real-time information data (D) pack at intervals of 1.0 second or more. That is, ACB
Is a virtual unit, and there is no actual pack indicating the boundary.

As shown in detail in FIGS. 5 to 7, information for controlling a subsequent V pack and the like is arranged in the CONT pack. As shown in FIG. 4, audio data is arranged in the A pack, and closed caption (CC) data other than the audio data is arranged in the V pack in addition to the video data. As shown in FIG. 8, in the D pack, character information relating to audio data in the A pack and the display time thereof are arranged.

Adjacent A packs A1 and A2 are arranged such that audio signals are related to each other. For example, in the case of stereo, an L channel pack and an R channel pack are arranged adjacently. In the case of a multi-channel of 5/6/8 channels, they are similarly arranged adjacently. When characters are displayed during reproduction of an audio signal, the A-pack and D-pack are arranged adjacent to each other. When images are displayed during reproduction of the audio signal, the V-pack (still image) and the A-pack are disposed. Are arranged adjacent to each other.

A pack, V pack and D pack are shown in FIG.
As shown in FIG. 4, 4-byte pack start information, 6-byte SCR (System Clock Reference) information, and 3-byte Mux rate for 2034 bytes of user data (A data, V data) A pack header of a total of 14 bytes of information and 1-byte stuffing is added (1 pack = 2 total).
048 bytes). In this case, the time stamp SC
By setting the R information to be “1” in the first pack in the ACB unit and to be continuous in the same album, the time of the A pack in the same album can be managed.

Next, the configuration of the CONT pack will be described in detail with reference to FIGS. The CONT pack is called a navigation pack or a so-called navigation (NV) pack in the DVD video standard, and includes a 14-byte pack header, a 24-byte system header, a PCI (presentation control information) packet and a DSI ( Data Search Information) packet. The PCI is called playback control information. This PCI packet has a 6-byte packet header and a 1-byte substream ID.
The DSI packet is composed of 979 bytes of PCI data as shown in detail in FIG. 6 (total 986 bytes), and the DSI packet has a packet header of 6 bytes, a substream ID of 1 byte, and 1017 bytes of data shown in detail in FIG. It is composed of DSI data (1024 bytes in total).

The PCI data is navigation data for controlling the reproduction of the VOBU. As shown in detail in FIG. 6, PCI general information (PCI GI) of 60 bytes and 3
6-byte non-seamless angle information (NSML A
GLI) and 694-byte highlight information (HLI)
And 189 bytes of recording information (RECI). Here, VC in FIG.
BU is the same as VOBU in the DVD video standard.

Data search information (DSI) shown in FIG.
Is navigation data for searching for data and executing VOBU seamless reproduction. As shown in detail in FIG. 7, 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) and 168 bytes of VOBU search information (VOBU SR)
I), • 144 bytes of synchronization information (SYNCI), and • 471 bytes of reserved area, totaling 1017 bytes.

On the other hand, as shown in FIG. 8, the D-pack has a pack header of 14 bytes, a system header of 24 bytes, an ACD (audio character real-time information data) packet of 1003 bytes, and 1007 bytes.
It is composed of byte SEC (sound effect control) packets. The ACD packet has a 6-byte packet header and a 1-byte substream ID.
9, ACD (audio character display) information of 676 bytes as shown in detail in FIG. 9, and audio reproduction control information of 294 bytes + reservation area of 26 bytes, for a total of 320 bytes. The SEC packet also has a 6-byte packet header and a 1-byte substream ID, and a 10-byte packet as shown in detail in FIG.
It is composed of 00 bytes of SEC (sound effect control information) data.

Here, FIGS. 9A and 11A show a first example, and FIGS. 9B and 11B show a second example. ACD of 676 bytes in the first example
As shown in detail in FIG. 9A, the information area includes a 48-byte general information area, a 294-byte information area for characters "1" and "2", a 16-byte display time control data area, and a 24-byte information area. Of the reservation area.

Each information area of characters "1" and "2" is 93
Name space area of bytes and 2 of 93 bytes each
It consists of two free space areas and a 15-byte data pointer area. In the name space area, for example, 31-byte 1 / 4-byte character data for header and 62-byte full-size and half-size character data for text are displayed to display a song name as shown in FIG. 1
In the 6-byte display time control data area, the A-pack address (timing time) is arranged in 8 bytes as the character display start time and character display time.

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 , And the hold information. The 16-byte service level information indicates display size, display type, audio / video / SP discrimination, stream, and the like. Characters are mandatory, and bitmap is optional. The 6-byte character set code information indicates the language of the characters "1" and "2" in 2 bytes each, as in the video file, and indicates a maximum of 8 languages in one file. English is mandatory.

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

The content of 1000 bytes of SEC (sound effect control) data shown in FIG. 8 is arbitrary, and is composed of, for example, 40 types of sound effect control information of 25 bytes each. In one type of audio reproduction control information area, 20 bytes of graphic equalizer information, 3 bytes of level balance information and 2 bytes of reverberation additional information are arranged, and this information is selected by the user to control the sound quality of the audio signal. Is done. These pieces of audio playback control information are used when the user plays a song arranged in the A-pack, for example, the genre (classical, jazz, rock, BG) of the song.
According to M), and even in the same genre, the data is recommended by a so-called professional mixer so that the sound quality at the time of reproduction is best according to the performance state, recording state, atmosphere, etc. of the music.

Instead of recording the ACD and the SEC in the same pack, the ACD and the SEC may be recorded separately in separate packs. That is, as a second example of the first embodiment, a pack having only ACD packets as shown in FIG. 11A and a pack having only SEC packets as shown in FIG. 11B are provided. You may. In this case, the length of the packet is freely set within a range of 2010 bytes. Packet header is 1 to be the first of ACB
7 bytes, otherwise 14 bytes. The private header is a substream ID (1
Byte) and an RTI-INFO flag (1 byte) as a pack type ID.
Real-time information (1979 bytes) is packed type I
The ACD is recorded when the RTI-INFO flag D is "0000b", and the SEC is recorded when the RTI-INFO flag is "0001b".
Is recorded.

The above-described pack constitutes a disk having a data structure applied to the present invention as shown in FIGS. By the way, as shown in FIG. 23, the data format of the DVD video disc includes only a video title set (VTS), and as shown in FIG.
The data format of the D audio disc includes only an audio title set (ATS). And FIG.
1 is a DVD-Avd (audio-AV
Data) disc, and a video title set (V
TS) and audio title set (ATS). This ATS is an audio manager (AM
G) and a plurality of ATS <1> and ATS <2>.

Therefore, according to the format shown in FIG. 22, for a title dedicated to audio having audio data, a first pack including audio data and sound control information relating to the audio data in the first pack are provided. A DVD audio disc having a data structure in which a second pack including application time control data for controlling the application time and an AMGI management area including information for managing reproduction of the first pack is realized. .

According to the format shown in FIG. 21, a first pack including audio data is added to an audio-only title having audio data.
A second pack including sound control information on the audio data in the first pack and application time control data for controlling an application time thereof, and an AMGI management area including information for managing reproduction of the first pack. And controls a first pack including audio data, a third pack including video data, and a reproduction of the first and third packs for a title including the audio data and the video data. A DVD-Avd disc having a data structure in which a navigation pack conforming to the DVD video standard including information to be reproduced and a VMGI management area including information for managing reproduction of the first and third packs is realized.

Next, a method for reproducing the above three types of discs will be described with reference to FIG. According to the method, ATS <of FIG.
2> and ATS <1> and ATS <2> in FIG.
It can be reproduced by accessing ACBS via ATSI by MGI. The method,
Indicates that AMGI is used when accessing a video title. Therefore, the above two types of audio discs of the present invention can be reproduced while maintaining compatibility with DVD as a family of DVD.

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

In the reproducing device 17, this signal is sent to the CONT pack detector 3 and the A-pack and D-pack detector 9. The CONT pack detector 3 detects C in the reproduced data.
The ONT pack is detected, control parameters are set in the parameter units 8 and 14, and V packs controlled by the CONT pack are sequentially written into the V pack buffer 4. The user data (video signal, sub-picture information) in the V pack written in the V pack buffer 4 is stored in the pack order by the buffer extracting unit 5 based on the SCR (see FIG. 4) in the V pack, and in the CONT pack. Are extracted in the order of output time based on the PTS of the video signal, then the image conversion unit 6, the D / A conversion unit 7, the video output terminals 15, 1
It is output as an analog video signal via 5 '. These blocks 3 to 8 constitute a video processing unit 17V,
The video processing unit 17V operates under the control of the control unit 23 when the internal power switch control unit 30 turns on the power switch SW.

The A-pack and D-pack detector 9
The A and D packs are detected by detecting the A and D packs in the reproduced data.
The data is sequentially written to the pack buffer 10. The user data (audio signal) in the A pack written in the A and D pack buffers 10 is packed by the extracting unit 11 in the pack order based on the SCR and based on the audio search data in the TOC information. , And then the PCM converter 12 and the D / A converter 1
3. Output as an analog audio signal via the audio output terminal 16.

The display data in the D pack (FIG. 8,
Audio character display information AC shown in FIG.
D) is sent to the display signal generation unit 20 to generate a display signal. The display signal is output via the display signal output terminal 22 or is output to the built-in character display unit 21.

FIG. 13 is a block diagram functionally showing the configuration shown in FIG. The reproducing means 2 corresponds to the drive device 2 shown in FIG.
0, 11, 14) are A-pack and D-pack detectors 9, A
And the D-pack buffer 10, the extraction unit 11 and the parameter unit 14, and the audio signal output means (12,
13) corresponds to the PCM conversion unit 12 and the D / A conversion unit 13. The character information output unit 20 corresponds to the display signal generation unit 20, and the display unit 21 corresponds to the character display unit 21. Also, the reproduction signal processing separation means V (3, 4,.
5 and 8) correspond to the CONT pack detection unit 3, the V-pack buffer 4, the extraction unit 5 and the parameter unit 8, and the video signal output unit and the sub-picture information unit (6 and 7) correspond to the image conversion unit 6 and the D / A. It corresponds to the conversion unit 7. The control means 23 corresponds to the control unit 23.

In FIG. 13, the control means 23 is the operation unit 1
When a command signal for reproducing the target music is sent from the remote controller 8 or the remote controller 19, the target music is reproduced from the disc 1 by sending an address control information signal corresponding to the reproduction command to the reproducing means 2. . The reproduction signal processing / separating means A / D separates the reproduction data into an audio signal and character information, sends the audio signal to the audio signal output means (12, 13), and outputs 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
The control unit 23 separates the NT information, the video signal, and the sub-picture information into the CONT information and sends the video signal and the sub-picture information to the video signal unit and the sub-picture information unit (6, 7).

Also, a predetermined area of AMGI (Audio Manager Information) or ATSI (Audio Title Set Information) is
C information is additionally recorded (the TOC information is sometimes referred to as SAPP in DVD audio), and the reproducing apparatus accesses the TOC information and stores the TOC information in a memory constituting the TOC information storage unit 14A to locate the beginning of the music. It can be performed. As the TOC information, information recorded in a lead-in area of a CD can be used.

The TOC information is read at the start of reproduction and is stored in the TOC information storage unit 14A. When the start reproduction of a song or movement is designated, the TOC information storage unit 14A is referred to and stored in the disc 1. to access. In addition,
This TOC information is also stored on disk 1 as shown in FIG.
Lead-in area (TOC area 1a shown)
, And when the reproduction starts, the TOC detection means 24
May access the TOC area 1a independently and store it in the TOC information storage unit 14A.

Next, referring to FIGS. 14 and 15, an AVD using reproduction control information such as TOC information and search information will be described.
The synchronous playback processing will be described. In FIG. 14, for example, when the beginning reproduction of a song or a movement is designated, the TOC information corresponding to the designated position is referred to (step S1), and the cell and index locations are calculated based on the TOC information (step S1). S2). Next, the location is searched (step S3).
The pack, V pack and D pack are played back synchronously (step S4 → S5).

In FIG. 15, the CONT pack is reproduced (step S11), and it is checked whether the time information in the A pack and the V pack are the same (step S1).
3). If the time is not the same, the CONT pack is adjusted by ± 1 pack (step S14), and the process returns to step S11 to reproduce the CONT pack.

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

In step S18, it is checked whether or not the reproduction of the V-pack has been completed. If the reproduction has not been completed, the process returns to step S13, and if completed, the process proceeds to step S19. In step S19, the next V pack controlled by the CONT pack is reproduced, and the V pack address is incremented by one.
Return to In step S20, the next A-pack or D-pack is reproduced, and the A-pack address or the D-pack address is incremented by one. Then, it is checked whether or not the reproduction of the V-pack is completed (step S21). If so, the process returns to step S16, and if completed, the process proceeds to step S23.

In step S23, the next V pack controlled by the CONT pack is reproduced, the V pack address is incremented by one, and it is checked whether or not the end of the frame (EOF) has been reached (step S24).
If it is not EOF, the process returns to step S13.
In the case of OF, the AVD synchronous reproduction processing ends. In the case of an audio disc without a CONT pack, the synchronization shown in FIG. 15 is not required.

Next, referring to FIG.
0 and 21 will be described in detail. The display time data in the D pack is separated into display start time data and display end time data by a display time decoder 51, and these data are applied to a start comparator 52 and an end comparator 53. The character data in the D pack is converted by the character data decoder 54 into dot matrix character data for display, and this data is stored in the buffer 55.

Then, the start comparator 52 compares the display start time data with the A-pack address being reproduced, and
When they match, a dot matrix read start control signal is sent to the buffer 55 and a display 56 is displayed.
A display ON control signal is sent to (21 '). Also,
The end comparator 53 compares the display end time data with the A-pack address being reproduced, and when they match, sends a timing signal for outputting the next character time data to the display time decoder 51 and displays the display 56 (2
A display-off control signal is sent to 1 ').

FIG. 17 shows a modification of the first embodiment.
12 shows an audio-only reproducing apparatus that does not reproduce a V-pack by omitting the video processing unit 27V in the DVD reproducing apparatus of FIG. In this case, the reproduction signal processing / separating means 9
10, 11, 14 are audio signal output means 12, 1,
3 pre-reads the SEC information in the D pack before the D pack which controls the display of the A pack being output, and stores the SEC information in the SEC storage unit 1
4B. In this modification, the character information in the SEC information is displayed on the flat matrix display 21 'as the display means 21.

FIG. 18 shows, as another modification of the first embodiment, a lead-in area (T in FIG.
It is additionally recorded in the OC area 1a), and when the reproduction is started, TO
The figure shows an audio-only reproducing apparatus in which the C detecting means 24 independently accesses the TOC area 1a and stores the TOC area 1a in a memory constituting the TOC information storage unit 14A. Further, in this configuration, when audio reproduction control information for reproducing with the sound quality recommended by the professional mixer is recorded in the SEC packet shown in FIG. 8, the sound quality control information output means 31 and the sound quality / level control processing means 32 is provided to control the sound quality based on the control information.

Note that, as shown in FIG.
D and SEC, the discriminating means is provided in the reproduction signal processing separating means 9 ', and the character information output means 20 and the sound quality /
It is supplied separately to the level control information output 31. In this case, with the configuration shown in FIG. 26, sound effect control can be performed using the control start time data and the control end time.

Next, a second embodiment will be described. In the second embodiment, a D-pack is provided as in the first embodiment, and character information is arranged in the ACD packet of the D-pack as shown in FIG. 9B, but no display time data is arranged. . The display time data (8 × 2 bytes) is arranged in the reserved area (471 bytes) of the data search information (DSI) in the CONT pack shown in FIG.

Next, a third embodiment will be described. In the third embodiment, a D-pack is provided as in the first embodiment, and character information is arranged in the ACD packet of the D-pack as shown in FIG. 9B, but no display time data is arranged. . The display time data (8 × 2 bytes) and the general display control data other than the maximum 52 bytes of display time data are arranged in the reserved area (471 bytes) of the data search information (DSI) in the CONT pack shown in FIG. Is done.

As general display control data, for example, display control data for synthesizing and displaying 2 × 8 pieces of character information for display on a display device having a larger number of pixels than the display 56 shown in FIG. An 8-byte display start address (an address corresponding to the ACD display start address) and an 8-byte division number data are arranged.

FIG. 19 shows a character display circuit for displaying characters in the format of the third embodiment. A display time decoder 51, a start comparator 52, an end comparator 53, a character decoder 54, a buffer 55 and a display 56 This is the same configuration as FIG. Here, as shown in FIG. 10, the buffer 55 and the display 56 have a size of 15 full-width characters (31 half-width characters) ×
It is configured to be able to display 2.5 lines of characters, and this is one set. The V-RAM 59a in the video display processor 59 has a capacity capable of storing 2 × 8 sets of character information as shown in FIG.

The character display device shown in FIG. 19 includes a normal mode in which one set of character information is displayed on the display 56,
There is a special mode in which 2 × 8 sets of character information are displayed on an external display device (not shown) via the external output terminal 15 ″, and the operation in the normal mode is substantially the same as that in FIG. The display time data in the CONT pack is separated into display start time data and display end time data by the display time decoder 51, and these data are applied to the start comparator 52 and the end comparator 53. The character data in the D pack Is converted into dot matrix character data for display by the character data decoder 54, and this data is stored in the buffer 55.

The start comparator 52 compares the display start time data with the A-pack address being reproduced, and
When they match, a dot matrix read start control signal is sent to the buffer 55 and a display 56 is displayed.
A display ON control signal is sent to (21 '). Also,
The end comparator 53 compares the display end time data with the A-pack address being reproduced, and when they match, sends a timing signal for outputting the next display time data to the display time decoder 51 and displays the display 56 (2
A display-off control signal is sent to 1 ').

On the other hand, in the special mode, the display time data in the D pack is separated into the display start time data and the display end time data by the display time decoder 51, and these data are separated into the start comparator 52 and the end comparator 53.
Is applied to the CPU 60 as well. Further, the character data in the D pack is transmitted to the character data decoder 54.
Is converted into dot matrix character data for display, and this data is stored in the buffer 55. further,
The display start address (address corresponding to the display start address of the ACD) and the division number data in the CONT pack are decoded by the general display control
60 is applied.

Then, the start comparator 52 compares the display start time data with the A pack address being reproduced, and
When they match, a dot matrix read start control signal is sent to the buffer 55. The end comparator 53 compares the display end time data with the A-pack address being reproduced. A timing signal for outputting the display time data of the set is transmitted.

The CPU 60 checks the display start time data of each set decoded by the display time decoder 51 based on the display start address of each set decoded by the general display control data decoder 58 and the division number data. When they match, a set of write addresses is specified to the V-RAM 59a in the display processor 59.

Thus, one set of dot matrix data read from the buffer 55 is designated by the CPU 60 to the V-RAM 59a in the video display processor 59 based on the display start address and the division number data. The dot matrix data for 16 sets is written in the V-R
It is written to AM 59a. The video display processor 59 develops the 16 sets of dot matrix data into a video signal of one screen, and the video signal is output to an external display device (not shown) via the external output terminal 15 ″.

[0080]

As described above, according to the present invention, character information relating to audio data in the first pack and display time control data for controlling the display time thereof are arranged in the second pack. A for managing the playback of the pack
Placed MGI management area, so as not to record the data for controlling the video packs and video data including video data, audio data such as music source mainly recorded disc, character information indicating the contents efficiency Can be reproduced and displayed.

[Brief description of the drawings]

1 is a block diagram showing an embodiment of the encoding device applied Ru audio signal present invention.

FIG. 2 is a block diagram showing a signal processing circuit of FIG. 1 in detail.

3 is an explanatory diagram showing the format of that apply disk present invention.

FIG. 4 is an explanatory diagram showing the formats of the audio pack and the video pack of FIG. 3 in detail.

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
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 of 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 device 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 of 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.

[Explanation of symbols]

1 Disc 2 Reproducing means 34 DVD formatting part (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 (Start comparator) 52, end comparator 53, buffer 55, and character information display means) 58 general display control data decoder (second decoding means) 59 video display processor (character information display means with CPU 60) 60 CPU

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-231726 (JP, A) WO 97/13361 (WO, A1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G11B 20/12 102 G11B 20/10 301

Claims (1)

(57) [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 pack including audio data, In which a second pack including character information relating to the audio data in the pack and display time control data for controlling the display time thereof, and an AMGI management area including information for controlling reproduction of the first pack are arranged. An audio title set (ATS) including a first pack and a second pack having a structure is recorded, and a video pack including video data and data for controlling the video data are recorded. A disc reproducing apparatus for reproducing a disc having no disc, a reproducing means for reproducing at least a first pack and a second pack from the disc; First decoding means for decoding character information relating to audio data from the second pack reproduced by the means, and second decoding means for decoding display time control data from the second pack reproduced by the reproducing means. And a character information display means for displaying character information decoded by the first decoding means based on display time control data decoded by the second decoding means.