JP2002197840A - Optical disk, optical disk recorder and optical disk reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an optical disk, an optical disk recorder and an optical disk reproducing device where a user can retrieve texts in various languages. SOLUTION: When recording a moving picture on an optical disk, text data are recorded and further a recording start date and time, a recording end date and time, a source name or a channel number are recorded as primary text data alphanumerically by each program or cell as the unit of video recording. The other text data are recorded together with language codes. Thus, even when there exist various languages of the text data at reproduction, since the primary text data used to select video data are expressed alphanumerically, a program or a cell to be reproduced can be selected independently of the language and text information with the language code identical with that of the recorder can be retrieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disk for recording data such as video and audio, an optical disk recording device for recording data on the optical disk, and an optical disk reproducing device for reproducing data recorded on the optical disk.

[0002]

2. Description of the Related Art In recent years, an optical disk reproducing apparatus for a moving image, which reproduces an optical disk on which data such as video and audio data is recorded, has been developed. Widespread.

[0003] Among them, currently, MPEG standardized internationally
2 (Moving Image Coding Exp
A DVD (Digital Video Disc) standard that uses an AC3 audio compression method using an ert Group (ert Group) method has been proposed.

This standard supports MPEG2 as a moving picture compression system, AC3 audio and MPEG audio as audio in accordance with the MPEG2 system layer, and further performs sub-length data obtained by run-length-compressing bitmap data for subtitles, fast forward rewind, etc. Special play control data (Navi Pack) is added.

Further, this standard supports ISO9660 and micro UDF so that data can be read by a computer.

[0006] However, this standard is not considered at present for general household recording / reproducing machines. Therefore, when a general household recording / reproducing apparatus is configured based on this standard, the following problem occurs.

[0007] In the DVD, information on a title is defined as text information.

[0008] This text information is recorded for use in retrieval or the like.
Since it has a menu (screen) created by a title creator such as an MGM (video manager menu) and a VTSM (video title set menu), it has not been used much. However, in a general home recorder / player, a menu cannot be put in advance in order to record a plurality of moving images and still images (photograph data) by a TV program or a camera on a DVD-RAM. Becomes important.

[0009]

SUMMARY OF THE INVENTION However, DVD
-In the case of ROM video, the text information is not considered in the language. For this reason, in Europe and Asian countries, the language of each TV broadcast station is different for each program,
If you go abroad with a VD recorder and record at the destination, or if you do not know in which language the text information was recorded and you want to decode the text information, you can use a character generator (such as a kanji ROM etc.) corresponding to the language code. ) Cannot be determined, and decoding becomes difficult. If the language is not supported,
Information search etc. cannot be performed at all.

The present invention has a drawback that, in an optical disk for recording video data, it is not possible to cope with a case where the language of text information corresponding to the video data to be recorded is changed each time recording is performed, and text search processing cannot be performed. It is an object of the present invention to provide an optical disk, an optical disk recording device, and an optical disk reproducing device capable of performing a text search in multiple languages.

[0011]

An optical disk according to an embodiment of the present invention includes a management area and a data area.
In the data area, data is recorded in a plurality of sequences, and each sequence includes a plurality of programs including a plurality of cells, and one cell includes:
In correspondence with the data unit, the data unit is recorded by packing the video and audio to be reproduced within a certain range of time into a plurality of packs, and defining the reproduction order of the cells in the management area. A sequence management table that manages a sequence, and a program management table that manages the program are independent or included in each other. The first text information is recorded in the program management table, and the second text information used in searching for the program in the same language or a different language as the first text information is stored in the program management table. It is recorded in an area different from the management table.

An optical disk according to an embodiment of the present invention is composed of a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each sequence is composed of a plurality of cells. Become 1
One cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and is stored in the management area in a management table for managing the sequence. In the case where the management tables for managing the cells are independent or included in each other, text information that is minimum necessary when searching for the cells and is expressed by alphanumeric characters is included in the cell management table. The second text information which is recorded and used in the same language as the first text information or in a different language from the cell and used when searching for the cell is recorded in an area different from the cell management table in the management area.

An optical disk recording apparatus according to an embodiment of the present invention includes a management area and a data area, in which data is recorded in a plurality of sequences. One cell corresponds to a data unit, and the data unit is recorded as a plurality of packs of video and audio to be reproduced within a certain range of time. In a region, a sequence management table that manages a program sequence by defining the reproduction order of the cells, and a program management table that manages the program, in which data is recorded on an optical disk independently or included in each other,
First recording means for recording the data in the data area in the optical disc in units of a program; and first text information which is a minimum necessary when searching for the program and is expressed by alphanumeric characters. Second recording means for recording the program management table in the optical disc; and second text information in the same or different language as the first text information and used in searching for the program. And third recording means for recording in a different area from the program management table in the management area.

An optical disk reproducing apparatus according to an embodiment of the present invention includes a management area and a data area, and data is recorded in the data area in a plurality of sequences. One cell corresponds to a data unit, and the data unit is recorded as a plurality of packs of video and audio to be reproduced within a certain range of time. In the area, a sequence management table for managing the program sequence by defining the order of reproduction of the cells and a program management table for managing the program exist independently or included in each other. The first text information that is necessary and expressed in alphanumeric characters is The second text information recorded in the same table or in the same language as the first text information or in a different language and used when searching for the program is recorded in an area different from the program management table in the management area. Input means for inputting a recording date and a channel number as text information, and a recording date and a channel number inputted by the input means and the second information recorded in the program management table. Searching means for searching for the first text information of the target program by comparing with the first text information; selecting means for selecting one of the searched first text information; Reproducing means for reproducing data of a program corresponding to the first text information selected by the user Consisting of.

An optical disk according to an embodiment of the present invention is composed of a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each sequence is composed of a plurality of cells. One cell corresponds to a data unit, and the data unit is recorded as a plurality of packs of video and audio to be reproduced within a certain range of time, and is recorded in the management area. A sequence management table that manages a program sequence by defining the reproduction order of the cells, and a program management table that manages the program are independent or included in each other. The first text information required and expressed in alphanumeric characters is The second text information recorded in the management table and having the same language as the first text information or a different language and having a lower priority than the first text information when used for searching for the program is stored in the management table. It is recorded in an area different from the program management table in the area.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an optical disk recording / reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

As a typical embodiment of this optical disk recording / reproducing apparatus, an apparatus for recording / reproducing a moving image (AV data) encoded based on MPEG2 on an optical disk 1 at a variable bit rate, for example, a DVD digital video recorder There is. (A specific example of the DVD digital video recorder will be described later.) First, as shown in FIG. 2, the optical disk 1 stores data in a normal file format. In addition, the title, for example,
This is equivalent to one movie, and one disc contains multiple titles. A collection of the titles is called a title set, and the title set is composed of a plurality of files.

On one optical disc 1, a video manager (hereinafter referred to as VMG) is used as information for managing the optical disc 1.
File exists.

Further, a video title set (hereinafter VT)
S), information for managing this title set includes Video Title Set Information.
The VTSI includes a management information file of the VTSI (hereinafter referred to as VTSI), a video file composed of video data, and a backup file of the VTSI.

For example, with respect to a DVD video directory, VMG management data (VMGI), VMG menu video data (VMGM VOBS), VMGI
Backup (VMGI), VTS management data (V
TSI), VTS menu video data (VTSM
VOBS), VTS video data (VTSTT VO
BS) and VTSI backup (VTSI).

As shown in FIG. 3, the video file has a hierarchical structure. One file is composed of a plurality of program chains, and one program chain is composed of a plurality of programs. One program is composed of a plurality of cells, and one cell is composed of a plurality of video object units (hereinafter, referred to as VOBUs). Further, the VOBU is configured by a pack including a plurality of various types of data. A pack is composed of one or more packets and a pack header.

Here, as a type of pack, a pack in which moving image and still image data are recorded is referred to as a video pack (V
A pack in which sub-picture data is recorded is referred to as a sub-picture pack (SP pack), and a pack in which audio data is stored is referred to as an audio pack (A-pack).

A pack is a minimum unit for performing data transfer processing. Further, the minimum unit for performing logical processing is a cell unit, and the logical processing is performed in this unit.

The video object unit VOBU
Corresponds to the playback time of video data composed of one or more video groups (group of pictures; GOP for short) included in the video object unit VOBU, and the playback time is 0.4 seconds to 1 second. .2 seconds. One GOP is usually about 0.5 seconds in the MPEG standard, and is screen data compressed so as to reproduce about 15 images during that time.

When the video object unit VOBU includes video data, a GOP (MP) composed of a video pack, a sub-picture pack, and an audio pack
EG standard) are arranged to form a video data stream.

It should be noted that even in the case of reproduction data of only audio and / or sub-picture data, the reproduction data is constituted with the video object unit VOBU as one unit. For example, when the video object unit VOBU is composed of only audio packs, the audio pack to be reproduced within the reproduction time of the video object unit VOBU to which the audio data belongs is similar to the case of the video object VOB of the video data. Are stored in the video object unit VOBU.

Further, a navigation pack (NV pack) (which can be used as management information) may be added to the head of the GOP.

As shown in FIG. 4A, the VMG management data (VMGI) includes a text data manager TXT which describes information such as a title name for a title, an album name, and a producer name in a text format.
DT MG is included.

This text data manager TXTDT
The MG has TXTDT M as shown in FIG.
Text data manager information TXTDT describing an identifier for identifying G, its number, and its end address
MGI and text data language unit search pointer TXTDTL in which language codes for each language are described
U SRP # 1 to TXTDT LU SRP # n and 1
The contents of text data language units TXTDT LU # 1 to #M, which are tables of text data for each language, are recorded.

The text data language unit search pointer TXTDT LU SRP has an 8-byte structure,
As shown in FIG. 4C, the language code of the text data (TXTDT LCD: 2 bytes), the reserve (1 byte), the character set (1 byte), the start address of the text data language unit (TXTDT LU S)
A: 4 bytes).

Text data language unit TXTDT
LU is, as shown in FIG. 4D, the IT in the TXTDT.
Text data information TXTDTI in which the number of TXT SRPs is described, a number identifying the contents of IT TXT and I
An item text search pointer (IT TXT SRP # 1 to ITT) describing the start address of T TXT
XT SRP # n), item texts described by character codes (IT TXT # 1 to IT TXT #
M) is recorded.

Item text (IT TXT # 1-I
1 to M of (TXTXT # M) are item numbers.

The text data language unit search pointer TXTDT LU SRP has a 10-byte structure. As shown in FIG. 5, the language code of the required text data (TXTDT LCD: 2 bytes) and the reserve (1
Byte), character set (1 byte), start address of text data language unit (TXTDT PLUS
A: 4 bytes) and other language codes of text data (OPTION TXTDT LCD: 2 bytes).

As shown in FIG. 6A, the VTS management data (VTSI) includes a VTS and a video title information manager table which is a table relating to the head address of each information in the VTSI and the attribute of the VOBS in the VTS. (VTSI_MAT) and a video title set program chain information table (VTS_PGCI) which is a table describing VTS program chain information.
The contents of T) are recorded.

The playback order is determined by the program chain PGC and the cell CELL of the video title set program chain information table (VTS_PGCIT).

The program chain PGC indicates a unit for executing a series of reproductions in a specified reproduction order.

The cell CELL indicates a reproduction section in which reproduction data is specified by a start address and an end address.

This program chain information table (V
TS_PGCIT) includes P as shown in FIG.
Program chain information table information (PGCI_SRP) describing the number of GCI_SRPs and the end address of PGCIT
TI), VTS_PGC category and VTS_PGC
VTS_PGC program chain information search pointer (PGCI_SRP # 1) describing the start address of I
PGCI_SRP # n) and program chain information (PGCI # 1 to #M).

The program chain information table information (P
GCITI) includes information indicating the number of program chains PGC. The program chain information search pointer (PGCI_SRP) points to the head of each program chain information PGCI, and facilitates the search.

The order of a plurality of program chain information PGCIs is determined by a plurality of program chain information search pointers PGCI_SRP # 1 to PGCI_SR.
It is set regardless of the order of P # n. Therefore,
For example, the same program chain information PGCI is stored in one or more program chain information search pointers PGCI_
It is possible to indicate by SRP.

The program chain information (PGCI) is
As shown in FIG. 6C, program chain general information (PGC_GI) in which information indicating the reproduction time and the number of cells of the program chain PGC is described, and a program chain command table (PGC_CMDT) in which commands of the program chain are described. A program chain program map (PGC_PGI) in which a map indicating the structure of the program in the program chain is described; a cell playback information table (C_PBIT) in which a table defining the order of reproduction of cells in the program is described; The cell position information table (C_POSIT) in which the VOBID number and the cell ID number of the cell in question are described.

As shown in FIG. 6D, the cell reproduction information (C_PB) is stored in the cell reproduction information table (C_PBIT).
I # 1 to #j) are described.

FIG. 7 shows the cell reproduction information C shown in FIG.
_PBI (C_PBI # 1 to #j). That is, each cell reproduction information (C_PBI) has a 54-byte configuration and has a cell category (C_CA) as shown in FIG.
T; 4 bytes), cell playback time (C_PBTM; 4 bytes), first video object unit (V
OBU) start address (C_FVOBU_SA;
4 bytes), the end address (C_FVOBU_E) of the first video object unit (VOBU) in the cell
A; 4 bytes), the start address (C_FVOBU) of the last video object unit (VOBU) in the cell
_SA; 4 bytes), the end address (C_FVOB) of the last video object unit (VOBU) in the cell
U_EA; 4 bytes), essential text information (28 bytes) consisting of recording start date and time, recording end date and time, source name and TV channel number, TEXT item number in the text data manager TXTDT MG of VMGI (ITEM Number OF TEX)
T; 2 bytes).

Program chain program map (P
The GC_PGI) includes program information # 1 to #i, as shown in FIG.

FIG. 8 shows the contents of the program information shown in FIG. That is, the program information has a 32-byte configuration, and has an entry cell number (E) as shown in FIG.
N_CN; 1 byte), essential text information (28 bytes) consisting of recording start date / time, recording end date / time, source name and TV channel number, TEXT item number in the text data manager TXTDT MG of VMGI (ITEMNumber OF TEXT;
2 bytes).

The essential text information (primary text information) includes information relating to recording, information transmitted during a blanking period, information from electronic TV guide information (such as that found in satellite broadcasting, etc.), and the like. Record and use it for searching recorded video data.

Among the essential text information, first, the information considered to be the minimum necessary is the recording start date / time, source name &
TV channel number. With this information, the user can specify a TV program. Also, if the date and time of recording is known, it is possible to specify where the video was shot in a video camera, still camera, or the like. Information.

These pieces of information can be generated inside the optical disc recording / reproducing apparatus (recording / reproducing apparatus), and the work is performed by an essential text information determining section described later.

Also, by writing and recording such essential text information in ASCII code, it becomes information that can be easily generated inside the optical disk recording / reproducing apparatus. Yes, and can be used in major countries in the world by writing in English. Further, a method of recording by designating the language code of the essential text information is also conceivable.

Further, as other text information,
Among text data such as text data superimposed during the video blanking period of terrestrial broadcasting and program information in electronic TV guide information of digital broadcasting such as satellite broadcasting, data other than subtitle data: title name, appearance Person name,
A program introduction sentence, historical background, introduction of accessories used in the program, and the like can be considered. Although it is not text information, HTML
Data can be recorded in a similar manner.

Therefore, regarding other text information,
DVD text. Recording is performed according to the INF format, and in the case of HTML data, the language code is “FFF”.
F ".

Regarding the text information which is known in advance before recording the video data, the text data is first recorded, and then the recording operation is started.

The text information captured during the recording is temporarily stored in a memory (a text buffer unit described later), and the text information is recorded after the recording is completed.

At this time, a language name or text code name included in the text information is detected by a language code detection unit described later, and the detected language name or text code name is recorded in the text information management area. Then, the text information is recorded in the text information area.

Here, the required text information and T
Regarding the EXT item number, there is a case where recording is performed in units of cells (CELL) and a case where recording is performed in units of programs (PG). When recording in CELL units, as shown in FIG. 7, recording is performed in C-PBI,
When recording in G units, as shown in FIG.
Will be recorded in the program information.

FIG. 1 illustrates the configuration of an optical disk recording / reproducing apparatus (DVD video recorder) that records and reproduces digital moving image information on the optical disk 1 using information having the structure described with reference to FIGS.

In the optical disk recording / reproducing apparatus, the following apparatus operates on the optical disk 1 as a recording medium. First, a main microprocessor unit (hereinafter, referred to as a main MPU unit) 101 is a unit for integrally managing the entire recording / reproducing apparatus.

The disk drive unit 102 is a main MPU
A command from the unit 101 includes a function of controlling the rotation of the optical disk 1, reading data from the optical disk 1, and writing data to the optical disk 1. The rotation control of the optical disk 1 is performed through a servo device of a disk motor. Writing of data to the optical disk 1 and reading of data from the optical disk 1 are realized through a pickup device using optical means for handling a laser beam.

During the recording operation, the data processing unit 103
In order to record the recording data from the encoding unit 104 on the optical disk 1, an error correction code is added to data in units of 16 sectors, and a modulation signal is generated to generate a recording signal, which is provided to the disk drive unit 102. . A temporary storage unit 105 is connected to the data processing unit 103, and is used for temporarily storing print data for several minutes or more by high-speed access.

At the time of the reproducing operation, the data processing unit 103
The reproduced signal is received from the disk drive unit 102, demodulated, error-corrected, and the demodulated signal is sent to the decoder unit 106.

An external input is given to the encoding unit 104. An audio / video (AV) input unit 107 can supply an audio signal and a video signal, and a tuner unit 108 can also supply an audio signal and a video signal. From the tuner unit 108, character information and closed caption data may be present as information on the vertical blanking period.
These data can also be input to the encoding unit 104.

The audio signal and the video signal are supplied to an analog / digital (A / D) converter 2 in the encoder 104.
01 is given. The digitized video signal is input to the video encoding unit 202, and the audio signal is input to the audio encoding unit 203.
The character information and closed caption data are input to the sub-picture (SP) encoding unit 204. The encoded video data, audio data, and sub-picture data are input to the formatter unit 205, and are packetized and packed for recording. At this time, the buffer memory 206 is used for temporary storage.

The above-mentioned encoding units 202, 203, 20
Reference numeral 4 refers to a system time clock serving as a reference for the time of the entire file, and determines a presentation time stamp (PTS) and a decoded time stamp (DTS) of each packet according to the value. The system time clock is the system time clock (ST
C) Generated by the unit 109. Formatter unit 20
5 is to add necessary information during playback.
For each predetermined unit of video (GOP) (for example, the playback time is set to 0.
The alignment processing of the pack may be performed in about 5 to 1.2 seconds, and a navigation pack (NV pack) (which can be used as management information) may be added to the head of the GOP. At the end of data recording, the data processing unit 103
The address of the NV pack before and after each NV pack is recorded in the data area for fast-forward and reverse-feed of data in the pack, and other management information necessary for the management area is recorded.

The decoding unit 106 includes a data processing unit 103
Receives a pack sequence which is the reproduction data from. This pack row is provided to the separation unit 301. The separation unit 301 determines each pack, and outputs the video packet to the video decoding unit 3.
02, the sub-picture packet is sent to the sub-picture (SP) decoding unit 3
03, the audio packet is transferred to the audio decoding unit 3
04 respectively.

Also, the NV pack can always be used as the main MP.
The data is sequentially stored in the internal memory 301a of the separation unit 301 so that the U unit 101 can access it.

When each packet is transferred from the separating section 301 to the corresponding decoder section, the PTS or DTS is sent to the system time clock section 109 at a specified specific timing and loaded, and the reference time of the entire apparatus is read. Set. For example, if the main MPU 101
The PTS in the pack is loaded into the system time clock unit 109, or the video decoder unit 302 automatically sets the DTS or PTS of the video data in the system clock unit 109.

After this setting, each decoding unit compares the PTS in the packet with the system clock, and performs decoding and reproduction processing while maintaining a synchronized state.

The video data decoded by the video decoding unit 302 and the sub-picture data decoded by the sub-picture decoding unit 303 are input to the video processing unit 305 and synthesized.

The output of the video processing unit 305 is mixed with the character data and the like stored in the frame memory unit 111 by the video mixing unit 110 and then the NTSC signal (or PAL signal) by the video encoding unit 112.
And supplied to the display unit 113. The output of the video mixing unit 110 can be taken out as a digital output via the interface 114.

The output of the audio decoder processing section 304 is converted by a digital / analog (D / A) conversion section 309 and supplied to the audio output section 115.

The main MPU 101 has a playback PLAY
A key input unit 120 such as a keyboard including a key, a recording REC key, a stop STOP key, and the like, a display unit 121, a character generator unit for displaying text information or a kanji ROM unit 122 are connected. The character generator or the kanji ROM 122 converts the text code (character code) of the text information into a character pattern (font data). For example, a character pattern to be converted into any of various character patterns such as alphanumeric characters, kanji characters, Hangul characters, and Arabic characters is set, and the set language code is managed by the main MPU unit 101. .

The main MPU unit 101 performs integrated management of the entire apparatus and performs editing control.

The main MPU section 101 has an essential text determination section 101a, a text buffer section 101b, a corresponding language warning display section 101c, a language code detection section 101d, a corresponding language check section 101e, and the like.

The essential text information deciding unit 101a records information (recording start date and time, source name & TV channel number) from the tuner unit 108, information transmitted during the blanking period, and electronic TV guide information (satellite broadcasting). Is generated as essential text information.

The text buffer unit 101b temporarily stores text information.

The corresponding language warning display unit 101c displays the fact that there is no corresponding data of the language from the data from the corresponding language check unit 101e on the display 113, and the tuner unit 108 as another text information search unit. When there is no text data from the user, the display 113 warns the user.

The language code detecting unit 101d detects a language name and a text code name included in the text information,
The detected language name and text code name are recorded in a text data language unit search pointer TXTDT LU SRP as a text information management area in a text data language code (TXTDT LCD) area (see FIG. 4C). Then, the text information is converted into a text data language unit TXTDT L as a text information area.
Area of item text (IT TXT) in U (Fig. 4
(Refer to (d)).

The corresponding language check unit 101e reads out the language code corresponding to the essential text information of each program or cell searched by the text item number,
This is to check whether the language code matches the language code of this device.

The main MPU unit 101 converts the character code corresponding to the text information into font data, expands the font data into the frame memory unit 111, and decodes the decoded data (DVD video data) by the video mixing unit 110. After mixing, the video encoder unit 112 mixes the NTSC signal (or PA
(L signal) and display it on the display 113 or the like.

Although the search data can be input from the key input unit 120, considering that it is a home appliance, it is conceivable that only a pointing device may be used (a keyboard is displayed on the TV screen). , Character selection method).

Next, data processing during recording will be described with reference to FIG.
This will be described with reference to the flowchart shown in FIG.

First, when the main MPU section 101 receives a recording command, it reads management data from the disk drive section 102 and determines an area to write. Next, the management area is set to write the determined area, and the write start address of the video data is set to the disk drive unit 102.
To prepare for recording data (step ST
1).

Next, the main MPU section 101 resets the time of the STC section 109. Here, the STC unit 10
Reference numeral 9 denotes a system timer which performs recording and playback based on this value. Further, the main MPU unit 101 performs other settings.

After that, the main MPU section 101 generates the recording start date and time, the source name and the TV channel number as information relating to the recording from the tuner section 108 as the required text information in alphanumeric characters by the required text information determination section 101a. When the essential text information is recorded in cell units, the cell reproduction information C_PBI shown in FIG.
When recording in the program unit and recording in program units,
Recording in the program information shown in (e) (step S
T2).

Further, the main MPU unit 101 converts the text information known in advance before recording into the item text (IT TDT) in the text data language unit TXTDT LU in the text data manager in VMGI.
XT) is recorded (step ST3). Also,
If the language code is known, it is recorded in the area of the language code (TXTDT LCD) of the text data in the text data language unit search pointer TXTDT LU SRP (step ST3).

The flow of a video signal during recording is as follows.

First, an A / D converter 201 converts the A / D signal input from the tuner unit 108 or the A / V input unit 107 into an A / D signal.
The audio signal is input from the audio encoding unit 203 and the tuner unit 108 to the SP encoding unit 204 as a closed caption signal or a text signal for subtitle data, such as text broadcasting, for the subtitle data. However, other than the subtitle data, the main MPU unit 101
When the main MPU unit 101 receives text information other than subtitles, it temporarily stores the text information in the text buffer unit 101.
b, and at the end of recording, text information is recorded.

Each of the encoding units 202, 203, 204
Compresses each signal into packets (but
Each packet is 204 per pack when packed.
It is divided into 8 bytes and packetized. ) To the formatter unit 205. Here, each of the decoder units 202, 203, and 204 is connected to the STC unit 109.
The PTS and DTS of each packet are determined and recorded as necessary according to the value of.

The formatter unit 205 temporarily stores the packet data in the buffer memory unit 206, packs the input packet data, mixes the packet data for each GOP, and adds an NV pack to the head of the GOP. Input to the data processing unit 103.

The data processing unit 103 attaches ECCs to the disk drive unit 102 as an ECC group for every 16 packs. However, disk drive unit 1
If the recording No. 02 is not ready for recording on the optical disk 1, it is transferred to the temporary storage unit 105, and waits until the data recording is ready. Then, the recording is started when the preparation is completed (step ST4). Here, the temporary storage unit 105 is assumed to be a large-capacity memory in order to hold recording data for several minutes or more by high-speed access.

At the end of recording, the address data of each NV pack is recorded in the data portion for fast-forward and rewind in each NV pack, and the necessary information is recorded in the management area after the end of the recording to perform the recording operation. The process ends (step ST5).

However, the main MPU unit 101 can read / write data from / to the data processing unit 103 via a bus in order to read / write a file management area or the like.

At the end of the recording, the main MPU 101
The text information stored in the text buffer unit 101b is stored in the text data language unit TXTDT LU in the text data manager in the VMGI in the area of the item text (IT TXT) (FIG. 4).
(See (a), (b) and (d)) (step ST
6). Further, the language code is recorded in an area of the language code (TXTDT LCD) of the text data in the text data language unit search pointer TXTDDTLU SRP (see FIGS. 4A, 4B, and 4D) (step ST).
6). It also records other management data.

At the end of the recording, the main MPU unit 101
FIG. 6 shows the recording end date and time as the required text information.
In the cell reproduction information C_PBI shown in FIG.
It is recorded in the program information shown in (e) (step ST7). At this time, in order to associate the program in which the text information is recorded with the required text information, the main MPU unit 101 sets the item text number as the position where the text information is recorded in correspondence with the required text information load, as shown in FIG. It is recorded in the cell reproduction information C_PBI shown in d) or in the program information shown in FIG. 6E (step ST7).

Next, data processing at the time of reproduction will be described.

First, when receiving the reproduction command, the main MPU unit 101 reads the management area from the disk drive unit 102 through the data processing unit 103 and determines the address to be reproduced. Next, the main MPU unit 101 sends the address of the data to be reproduced and the read command determined earlier to the disk drive unit 102.

The disk drive unit 102 reads sector data from the optical disk 1 in accordance with the sent command,
The data processing unit 103 corrects the error, and outputs the data to the decoder unit 106 in the form of pack data.

In the decoder unit 106, the read-out pack data is received by the separation unit 301, packetized, and video packet data (M
PEG video data) to the video decoding unit 302, the audio packet data to the audio decoding unit 303, the sub-picture packet data to the SP decoding unit 303, and the NV pack from the main MPU.
The data is stored in an internal memory for processing by the unit 101, and can be accessed by the main MPU unit 101 at any time.

At the start of the transfer, the transmitted packet data loads the PTS into the STC unit 109, and the main MPU unit 101 loads the PTS in the NV pack into the STC unit 109.
Or the video decoder unit 302 automatically sets the PTS of the video data in the STC unit 109. After that, each of the decoding units 302, 303, 304 sends a PTS (Presentation) in the packet data.
In synchronization with the value of (Time Stamp), (PTS and S
A reproduction process is performed while comparing the value of the TC
A video with audio subtitles can be reproduced on V113. In addition, the display of the playback time during playback is indicated by a DVD-ROM.
In the video, the reproduction time data in the NV pack is displayed.

Next, a program search process using text information will be described with reference to a flowchart shown in FIG.
Description will be made with reference to display examples shown in (a) to (f).

First, when the user presses a menu search key with the key input unit 120, the main MPU unit 10
1 determines the menu search mode, and reads the VTSI of the optical disk 1 using the disk drive unit 102 and the data processing unit 103 (step ST11). Based on the read VTSI, the main MPU unit 101 performs an initial setting of each of the decoding units 302, 303, 304 (step ST12). Further, the main MPU unit 101 guides and displays an initial search screen "Please enter a recording date or channel number" as shown in FIG. 11A on the display unit 113 (step ST1).
3).

In accordance with this guidance, a recording date and a channel number are input (step ST14). As this input, a recording time or a source name (TV channel number, satellite channel number or camera input) may be input.
Further, the main MPU unit 101 displays the input contents (for example, TV channel 12) on the display unit 113 as shown in FIG.

When the recording date and the channel number are input, the main MPU unit 101 is described in the above-described program unit or cell unit by the essential text determination unit 101a (see the cell reproduction shown in FIG. 6D). Information C
The required alphanumeric text information (recorded in the _PBI or the program information shown in FIG. 6E) is read, and a target program or cell is searched by the input recording date or channel number (step ST).
15, 16).

Then, main MPU section 101 stores the number of programs or cells searched by essential text determination section 101a and the first program number or cell number detected (step ST17).

Thereafter, the main MPU unit 101 reads out the essential text information expressed by the program or cell alphanumeric characters retrieved by the essential text determination unit 101a and, as shown in FIG.
3 (step ST18).

In this case, as a TV12CH program,
1.7: 00, July 12, 1998, 17: 00-17: 29, 2.9
21: 00-21: 59, July 21, 2008, 3.98 / 8
On the 9th of the month, 1: 0 to 1:59 are displayed.

In the display state of step 18, when the program or the essential text information of the cell is selected by the cursor (step ST19), the main MP
U section 101 searches for a target program or cell (step ST20), and shifts to reproduction processing. That is, when No. 2 is selected, the main MPU unit 101
As shown in FIG. 11 (e), the display unit 113 additionally displays a guidance of "Reproduce No. 2", and shifts to the process of reproducing the program or cell of No. 2.

When the search key is pressed in the display state of step 18 (step ST21), the main M
As shown in FIG. 11D, the PU unit 101 displays a guidance “Please enter a search character” on the display unit 113 (step ST22). In response to this guidance, the user inputs a keyword as a search character using the key input unit 120 (step ST23). When this keyword is input, the main MPU unit 101 uses the language code detection unit 101d to search for a text item number corresponding to the retrieved essential text information of each program or cell (cell playback information C_PBI shown in FIG. 6D).
A language code (text data language unit search pointer TXTDT) in the language information (TXTDT) in the text data language unit search pointer TXTDT LURP in the program information shown in FIG. LCD) is read out, and the corresponding language check unit 101e is read out.
To search for a program or cell that matches the language code of this device (step ST24). As a result of this search, the main MPU unit 101 reads out text information corresponding to the program or cell that matches the language code, and searches using the keyword (step ST25).
As a result of this search, the main MPU unit 101 additionally displays the essential text information of the matching program or cell on the display unit 113 (step ST26).

For example, the main MPU unit 101
When "non-fiction" is input on the search character input screen shown in FIG. 1 (d), the required text information corresponding to the text information having this non-fiction is
As shown in FIG. 11F, "21:21 on July 21, 1998:
00 to 21:59 ”is additionally displayed on the display unit 113.

In this state, the processing shifts to the processing of reproducing the program or cell corresponding to the selected essential text information.

In step 24, if there is no program or cell that matches the language code of the device, the main MPU unit 101 displays a guidance saying "There is no program in the corresponding language" on the display unit 113 ( Step ST27).

As described above, when a moving image is recorded on an optical disk, text data is recorded, and the recording start date and time, recording end date and time, source name or channel number as essential text data are recorded in a recording unit program. Alternatively, each cell is recorded in alphanumeric characters, and other text data is recorded together with a language code.

Thus, even when there are various languages of text data at the time of reproduction, the recording start date and time, recording end date and time, source name or channel number as essential text data are expressed by alphanumeric characters. It is possible to select a program or cell to be reproduced by the recording start date and time, recording end date and time, source name or channel number expressed by the alphanumeric characters, and further to the text information of the same language code as the language code of the device. Search can be performed.

When searching for text information of the same language code as the language code of the device, if there is no text information of the same language code, the user can be warned.

The present invention is not limited to the above embodiments, and various modifications and changes can be made at the stage of implementation without departing from the scope of the invention. Also,
The embodiments may be implemented in combination as appropriate as much as possible. In such a case, the effect of the combination is obtained.

Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of constituent elements disclosed in this application. For example, even if one or a plurality of constituent elements are deleted from all the constituent elements described in the embodiment, if at least one of the effects of the present invention or the effects of implementing the present invention is obtained, the constituent elements may be deleted. The deleted configuration can be extracted as an invention.

[0117]

According to the present invention, it is possible to obtain an optical disk, an optical disk recording device, or an optical disk reproducing device capable of performing a text search in a plurality of languages.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of an optical disk recording / reproducing apparatus according to an embodiment of the present invention.

FIG. 2 is a view for explaining a file format of data storage on an optical disc.

FIG. 3 is a diagram illustrating a hierarchical structure of information recorded on an optical disc.

FIG. 4 is a view for explaining a hierarchical structure of management data of a video manager.

FIG. 5 is a view for explaining a hierarchical structure of management data of a video title set.

FIG. 6 is a diagram for explaining the contents of another configuration of the text data language unit search pointer.

FIG. 7 is a diagram for explaining the contents of cell reproduction information.

FIG. 8 is a diagram for explaining the contents of program information.

FIG. 9 is a flowchart for explaining data processing during recording.

FIG. 10 is a flowchart for explaining a program search process using text information.

FIG. 11 is a diagram showing a display example in a program search process using text information.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Optical disk; 101 ... Main MPU part; 101a ...
Required text determination unit; 101b text buffer unit;
101c: Supported language warning display unit; 101d: Language code detection unit; 101e: Supported language check unit; 102: Disk drive unit; 103: Data processing unit; 104: Encoding unit; 105: Temporary storage unit;
107: audio video input unit; 108: tuner unit; 109: STC unit; 110: video mixing unit;
111: frame memory unit; 113: display unit;
120: Key input unit; 121: Display unit; 122: Character generator unit or Kanji ROM unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideo Ando 70, Yanagimachi, Yukicho, Kawasaki-shi, Kanagawa Prefecture Inside the Toshiba Yanagicho Plant Co., Ltd. (72) Inventor Yuji Ito 70, Yanagicho, Yukicho-ku, Kawasaki-shi, Kanagawa Prefecture Toshiba Yanagicho Factory Co., Ltd. (72) Inventor Kazuhiko Taira 3-3-9, Shimbashi, Minato-ku, Tokyo F-term (reference) in Toshiba Abu E Co., Ltd. 5D077 AA23 CA11 DC11 DC12 DE10 EA33 EA34 5D110 AA14 BB01 DA02 DA06 DA17 DB05 EA09

Claims (8)

[Claims] 1. A data area comprising a management area and a data area, wherein data is recorded in a plurality of sequences, and each sequence includes a plurality of programs including a plurality of cells. The cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and defines the reproduction order of the cell in the management area. In the optical disc in which the sequence management table for managing the program sequence and the program management table for managing the program are independent or included in each other, the minimum necessary for searching for the program and expressed in alphanumeric characters The first text information to be recorded is recorded in the program management table, Optical disc in which the second text information used when searching for text information same language or different languages in and the program is characterized in that it is recorded in the area different from the program management table of the management area. 2. The optical disk according to claim 1, wherein the first text information is a recording start date and time, a recording end date and time, a source name or a channel number. 3. A data area is composed of a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each sequence is composed of a plurality of cells, and one cell is a data unit. In the data unit, the video and audio to be reproduced within a certain range of time are recorded in a plurality of packs and recorded, and the management area manages the management table and the cell in the management area. In an optical disc in which a management table is included independently or included in each other, text information that is at least necessary when searching for the cell and is expressed in alphanumeric characters is recorded in the cell management table, The second text information used in searching for the cell in the same language or different language as the text information of Optical disc characterized in that it is recorded in the region different from the region of the cell management table. 4. A data area is composed of a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each sequence includes a plurality of programs including a plurality of cells. The cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and defines the reproduction order of the cell in the management area. An optical disc recording apparatus for recording data on an optical disc in which a sequence management table for managing a program sequence and a program management table for managing the program are provided independently or included in each other, wherein the data is stored in the data area in the optical disc. First recording means for recording the program in units of programs, Second recording means for recording first text information, which is at least necessary when searching for a ram and is represented by alphanumeric characters, in the program management table in the optical disc; And third recording means for recording second text information in the same language or a different language and used when searching for the program in a different area from the program management table in the management area of the optical disc. An optical disk recording device characterized by the above-mentioned. 5. A data area is composed of a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each sequence includes a plurality of programs including a plurality of cells. The cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and defines the reproduction order of the cell in the management area. Accordingly, a sequence management table for managing a program sequence and a program management table for managing the program exist independently or included in each other, and are the minimum necessary when searching for the program and are expressed by alphanumeric characters. First text information is recorded in the program management table and is the same as the first text information. An optical disc playback apparatus for playing back data from an optical disc in which the second text information used in retrieving the program in a language or a different language is recorded in an area different from the program management table in the management area, An input unit for inputting a recording date or a channel number as information; and comparing the recording date or channel number input by the input unit with the first text information recorded in the program management table. Searching means for searching for the first text information of the target program; selecting means for selecting one of the searched first text information; corresponding to the first text information selected by the selecting means And reproducing means for reproducing data of a program to be executed. The optical disc playback apparatus. 6. A data area is composed of a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each sequence includes a plurality of programs including a plurality of cells. The cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and defines the reproduction order of the cell in the management area. In the optical disc in which the sequence management table for managing the program sequence and the program management table for managing the program are independent or included in each other, the minimum necessary for searching for the program and expressed in alphanumeric characters The first text information to be recorded is recorded in the program management table, The second text information in the same language or different language as the first text information and lower in priority than the first text information in the same language as the text information is different from the program management table in the management area. An optical disc characterized by being recorded on a disc. 7. A management area and a data area, wherein the data area is recorded with data divided into a plurality of sequences, each of which is composed of a plurality of programs each comprising a plurality of cells. The cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and defines the reproduction order of the cell in the management area. An optical disc recording apparatus for recording data on an optical disc in which a sequence management table for managing a program sequence and a program management table for managing the program are provided independently or included in each other, wherein the data is stored in the data area in the optical disc. First recording means for recording the program in units of programs, Second recording means for recording first text information, which is at least necessary when searching for a ram and is represented by alphanumeric characters, in the program management table in the optical disc; Second text information in the same language or in a different language and having a lower priority than the first text information used when searching for the program is placed in an area of the optical disc different from the program management table in the management area. An optical disc recording apparatus, comprising: third recording means for recording. 8. A data area is composed of a management area and a data area. Data is divided into a plurality of sequences and recorded in the data area, and each sequence includes a plurality of programs including a plurality of cells. The cell corresponds to a data unit, and the data unit is recorded by packing video and audio to be reproduced within a certain range of time into a plurality of packs, and defines the reproduction order of the cell in the management area. Accordingly, a sequence management table for managing a program sequence and a program management table for managing the program exist independently or included in each other, and are the minimum necessary when searching for the program and are expressed by alphanumeric characters. First text information is recorded in the program management table and is the same as the first text information. Second text information in a language or a different language and lower in priority than the first text information used when searching for the program is recorded in an area different from the program management table in the management area. In an optical disc reproducing apparatus for reproducing data from an optical disc, input means for inputting a recording date or a channel number as text information, and a recording date or a channel number input by the input means and recorded in the program management table. Searching means for searching for the first text information of the target program by comparing with the first text information; selecting means for selecting one of the searched first text information; The program data corresponding to the first text information selected by the means is reproduced. Optical disc reproducing apparatus being characterized in that comprising a reproducing means for.