JP2677775C - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION       [0001]   [Industrial applications]   The present invention relates to an apparatus for reproducing a recording medium such as an optical disk.       [0002]       [0003]       [0004]       [0005]   [Prior art]   In recent years, due to the increase in the capacity of optical disks, the contents of partially different
Recorded multiple stories, and can play back any story according to the user's choice. Something you can do is appearing. But in this case, many stories
The same data will be recorded in duplicate, which will significantly reduce the efficiency of disk space utilization.
I will make it.       [0006]       [0007]       [0008]       [0009]       [0010]       [0011]   [Problems to be solved by the invention]   An object of the present invention is to provide a reproducing apparatus that does not need to record the same data redundantly.
doing.       [0012]       [0013]       [0014]       [0015]       [0016]   [Means for Solving the Problems]   According to the first aspect of the present invention, data is recorded in file units, and
A data unit that is a group of multiple types of data that are played back in synchronization with each other
A data unit area in which a group of
Information for linking one or more data units to form a program cell
InformationInformation including cell start position information and cell end position informationOne or more of
Cell information table area in which a cell information table is recorded and the cell information table
One or more of the program cells are linked based on the cell information table recorded in the area.
One or more chains, which are information for forming a program chain.
A playback device for playing back a recording medium on which the chain information is recorded.
First retrieval means for retrieving information, and a chain retrieved by the first retrieval means.
One or more of the cell information texts constituting the program chain based on the application information. A second search means for searching for a table from the cell information table area;
Based on the cell information table searched by the search means, the program cell
Retrieving one or more data units to be configured from the data unit area
And a third search unit for reproducing. The invention of claim 2 is
The data is recorded in file units, and the files are played back in synchronization with each other.
Data that records a group of data units that are a group of multiple types of data
A unit area and one or more data units recorded in the data unit area;
Information for linking up and configuring as a program cellAnd cell start position
Information including information and cell end position informationOne or more cell information tables are recorded
Cell information table area recorded and cell information recorded in the cell information table area
One or more of the program cells are connected based on the
One or more chain information, which is information to be configured as a chain, is recorded,
And the chain information includes a plurality of programs constituting the program chain.
A cell number string indicating the program cell number and the order in which these program cells are reproduced;
This is the same period on the same time axis for each program cell shown in the cell number column
Is a program cell that can be selectively reproduced between other program cells
In a reproducing apparatus for reproducing a recording medium including mode information indicating whether
Search means for retrieving information on the Web site, and a search performed by the first search means.
Based on the chain information,Cell information tableSecond search means for searching forSaid
Based on the cell information table searched by the second search means, the mode information is
Third search means for searching;On the basis of the searched mode information, the chain information is obtained.
The program cell indicated by the cell number string corresponding to the information can be selectively reproduced.
Determining means for determining whether the cell is a program cell, and selecting by the determining means
Program cell that can be selectively played back and that can be selectively played back.
When a desired program cell is selected from the program cells, the second
Cell information table searched by search meansAnd the third search means
Mode information retrievedOne or more of the desired program cells based on
Searching for the data unit from the data unit area and reproducing the data unit4Inspection
Cable means.       [0017]       [0018]       [0019]       [0020]       [0021]       [0022]       [0023]       [0024]       [0025]       [0026]       [0027]       [0028]       [0029]       [0030]   [Action]   In the reproducing apparatus of the present invention, the same program is used for a plurality of program chains.
Ram cells can be shared, so it is necessary to record the same data twice.
Disappears. Thereby, the utilization efficiency of the recording capacity of the recording medium can be maximized.       [0031]       [0032]       [0033]       [0034]       [0035]       [0036]       [0037]       [0038]   【Example】   Hereinafter, embodiments of the present invention will be described with reference to the drawings.       [0039]   FIG. 1 is a diagram showing a data structure of an optical disk according to one embodiment of the present invention.       [0040]   The data structure of this disc complies with the ISO-9660 standard. This disc
The recording space of the lead-in area, management area, data area and lead-out area
Has been split. The management area is the system area, PVD (Primary Volume Descri
ptor) table, VTD (Volume Terminate Descriptor) table, PT (Path Ta
ble) and DR (Directory Record). The data area consists of multiple files.
It is.       [0041]   As shown in FIG. 2, disks (volumes) are stored in the PVD table in the management area.
), Volume size, volume attributes, root DR
The position, the position of the PT, and the like are described. The contents of the VTD table are shown in FIG.
It is specified as shown. PT (L-type PT, M-type PT) are shown in FIGS.
As shown in the figure, a hierarchical structure between DRs is described. DR is the route DR (00)
Table, root DR (01) table and file (n) table group
. The route DR (00) table and the route DR (01) table include FIG.
As shown in FIG. 7, the position and the like of each DR table itself are described. H
The file (n) table is provided for each file in the data area. This
In these file (n) tables, as shown in FIG.
Is described.       [0042]   As shown in FIG. 2, the application system area is provided in the PVD table.
This application system area contains data indicating the type of disc conforming to the data recording method.
Disc identifier 1 and a disc indicating whether the disc is a double-sided disc or a single-sided disc.
Number of sides identifier 2 and disk indicating A side / B side when this disk is a double-sided disk
The surface identifier 3 and others are recorded. In this PVD table, B
The value of P indicates the byte position from the top of the table.       [0043]   As shown in FIG. 8, a file (n) table corresponding to each file Is provided with an application system area. This application system area includes data
Information (disk identifier) 4 indicating the type of file conforming to the recording method, and others
Has been recorded.       [0044]   FIG. 9 shows the structure of an optical disk reproducing apparatus for reproducing a disk having the above data structure.
FIG. In the figure, reference numeral 11 denotes an optical disk drive and an optical disk drive.
An optical disk drive that reads data from the disk by an optical pickup. 12
Is an MPU (microprocessor unit) for controlling the entire system. 13
Is a key input unit for giving a user command to the MPU 12. 14 is the system of MPU12
It is used as a working area of the ROM and the MPU 12 in which a control program and the like are stored.
RAM section. 15 is a recovery of the data output from the optical disk drive unit 11;
Performs tone and error correction, and applies error-corrected data to video (main video) and audio.
, A system processor section for separating the data into three pieces of sub-picture data. 16 is data
This is a RAM unit for processing. 17, 18, and 19 are from the system processor unit 15.
Video data, audio data, and sub-picture data
A video decoder section, an audio decoder section, and a sub-picture decoder section. 2
0 converts each decoded data into an analog signal, and outputs video data and sub-picture data.
A D / A & playback processing unit that multiplexes data with the data and outputs the multiplexed data to the video / audio output unit 21
You.   Next, the operation of the optical disk reproducing apparatus will be described with reference to FIGS.
FIG. 10 shows an apparatus for judging the type of a disc and a file conforming to the data recording method.
FIG. 11 is a diagram showing the configuration of the function, and FIG.
FIG. 12 shows a configuration, and FIG. 12 shows a file access procedure on the data structure of FIG.
FIG. 13 and FIG. 13 are flowcharts showing the procedure of file access.       [0045]   After starting the disc playback device or after replacing the disc, the playback device is
Is read (step 1). After this, the playback device identifies the standard in the PVD table.
Whether the disc is a disc based on the ISO-9660 standard
Is determined (step 2). This disc conforms to ISO-9660 standard.
If the disc is a disc, the reproducing device determines whether the disc is in the disc recording mode determination unit 31 shown in FIG.
, Check disk identifier 1 recorded in application system area in PVD table
By doing this, this disc can be played on this playback device (applicable disc).
(Step 3).       [0046]   If the loaded disc is an applicable disc, the reproducing apparatus performs the decoding shown in FIG.
The disc recorded in the application system area by the disc recording surface number determination unit 41
The number of faces identifier 2 is checked (step 4). As a result, the mounted disc
If it is determined that the disc is a double-sided disc, the reproducing apparatus determines the disc A / B side
At 42, the disc surface identifier 3 recorded in the application system area is also checked.
By doing so, it is determined whether the current reproduction surface is the A surface or the B surface (S
Step 5).       [0047]   Next, the playback device reads the PT and checks the hierarchical structure between the DRs.
The DR is read and the position of each file (n) table is confirmed (step 6).
Thereafter, the playback device extracts the file name from the first file (n) table.
(Step 7) It is determined whether or not this file name matches the file name specified in advance.
A determination is made (step 8). As a result, if the file names do not match, the playback device
The next file name is extracted (step 9), and the same operation is repeated. Each file name
Are matched, the playback device determines in the file recording method determination unit 32 shown in FIG.
, Information in the application system area in the file (n) table of the matched file (
By checking (Disc Identifier) 4, this file is suitable for this playback device.
It is determined whether the file is usable (step 11). This file is inappropriate
If so, the process ends. If this file is an applicable file,
The playback device determines the recording position of the file from the file (n) table of the file.
After confirmation, the file body is accessed (step 12).       [0048]   Next, a multiplex recording method of management information will be described.       [0049]   This disc contains multiple pieces of management information with the same content as the information recorded in the management area. Multiplely recorded as preliminary management information in a position other than the management area and data area
I have.       [0050]   FIG. 14 shows an example in which this preliminary management information is multiplexed and recorded in the lead-in area.
. As shown in the figure, the value indicating the position in each piece of spare management information is
Defined by the relative distance (the number of sectors) from the start address of the management areas 51 and 52
You.   The absolute addresses indicating the positions in the management area 53 and the data area 54 are stored in the management area 5
3 is defined as a relative distance (the number of sectors) from the first address. Therefore, reserve
When an arbitrary position in the management areas 51 and 52 is accessed, the spare management areas 51 and 5 are accessed.
Add the value of the target absolute address to the start address of 2 as the offset value
Can be calculated. For example, the first address of the first preliminary management area 51 is
When the address is −20, the address indicated by the absolute address 3 is calculated by the following equation.
It is.   3 + (− 20) = − 17   Similarly, if the start address of the second preliminary management area 52 is -10, the absolute address
The address indicated by the address 3 is calculated by the following equation.   3 + (-10) =-7   Next, the data structure of the file recorded in the data area of this disc is described.
Will be explained. FIG. 15 shows the data structure of this file. It is shown in the figure
As described above, the file is divided into a group of the file management table 5, the chain information table 6,
A DUT allocation table (hereinafter referred to as DAT)
. ) 8 and a DUT (data unit) 9 group.       [0051]   The file management table 5, as shown in FIG.
Information table number, cell information table number, DUT (data unit) number, section
And a pointer indicating the head of each table.       [0052]   As shown in FIG. 17 and FIG.
Information for forming a chain is described. Here is the program chain Is a unit constituting one story. Individual program chains are duplicated
A number of programs are linked in the order of reproduction. A program can have one or more
It consists of a set of units called program cells. In short, chain information table
The file 6 selectively connects a plurality of cell information tables 7 to form one program chain.
Information to be configured as a This chain information is included in the file.
A plurality of report tables 6 are arranged consecutively in the order of chain numbers.       [0053]   In the cell information table 7, as shown in FIG.
Information is described. Here, a program cell is one program
Is a part for constituting Each program cell can play multiple DUTs.
It is configured by connecting in order. In short, the cell information table 7 includes a plurality of DUTs 9.
Includes information for selectively linking to form one program cell.
I have. In the file, a plurality of cell information tables 7 are sequentially arranged in the order of cell numbers.
Is placed.       [0054]   As shown in FIG. 20, the DAT 8 records the DUT for each individual DUT.
Describes the relative position (the number of sectors) from the beginning of the file.
ing. In the file, a plurality of DAT8s are arranged continuously in the order of the DUT number.
ing.       [0055]   The DUT 9 stores video data, audio data, sub-video data, etc., which are reproduced synchronously with each other.
Is composed of a plurality of types of data. The playback time of each DUT 9 is specifically defined.
Not. In the file, a plurality of DUTs 9 are consecutively arranged in the order of the DUT numbers.
Have been.       [0056]   Next, a procedure for selecting a program chain will be described with reference to FIG.       [0057]   The playback device selects a program from among the multiple program chains in the file.
Any program chain selected by the user can be played.       [0058]   After obtaining the target file, the playback device obtains the file management data in the file.
5 is read (step 1), the number of program chains in the file,
Number of program cells, number of DUTs, number of sectors, and pointers to the beginning of each table
(Step 3). Next, the playback device uses the acquired pointer to
The contents of the chain information table are obtained (step 4), and the
The counter value is cleared to 0 (step 5).       [0059]   Next, the playback device sets the chain number indicated by the counter to the chain number specified by the user in advance.
It is determined whether or not they match the application number (step 6). If they do not match, the playback device
Adds the length of the table itself described in the chain information table to the start pointer.
Using the pointer obtained by calculation, the contents of the next chain information table
Is obtained (step 7). Subsequently, the playback device increments the chain number by 1 (step
Step 8), it is determined again whether the number matches the chain number specified by the user. This
Thus, the chain number indicated by the counter matches the chain number specified by the user in advance.
Steps 6 to 8 are repeated until they match.       [0060]   The chain number indicated by the counter matches the chain number specified by the user in advance
In this case, the playback device constructs this program chain from the chain information table.
Number of program cells, DUTs, sub-video channels, audio streams
The number of programs is acquired (step 9). Subsequently, the playback device uses the acquired information to
The number of branch points (NBP) in the chain information table and the chain control information (SCINF)
Obtain the start pointer of O) (step 10). After this, the playback device
The first chain control information (SCINFO) is obtained from the head pointer
11), a program chain based on this chain control information (SCINFO)
The reproduction control of the application is started (step 12).       [0061]   By the way, the file management table 5 in the file shown in FIG.
Information table 6, cell information table 7, DAT8, and DUT9, Is defined by the relative distance (the number of sectors) from the beginning of the file to which it belongs.
ing. That is, a is the number of sectors in the file management table 5, and b is the entire chain information table.
Table 6 shows the number of sectors in Table 6, c represents the number of sectors in the all-cell information table, and d represents the number of
If the number is the number of data, the head position of the file management table is 0,
The position of the bull is a, the position of the head cell information table is a + b, and the position of the head DAT
Is represented by a + b + c, and the position of the leading DUT is represented by a + b + c + d.       [0062]   In this way, the position in the file is represented by the relative distance (the number of sectors) from the beginning of the file.
By relocating, as shown in FIG. 22, the file is relocated to another position in the data area.
In this case, there is no need to change the position value.       [0063]   Also, in the file structure of this optical disc, a plurality of program chains are used.
Can share the same program cell.       [0064]   As shown in FIG. 18, the chain information table contains other program chains.
And the total number of branch points (NBP) indicating the number of program cells shared between
Is described as branch information (BINF0), which is a program cell number. FIG. 23 and FIG.
FIG. 24 shows that three program chains A, B, and C share a program cell.
Of branch information (BINFO) and chain control information (SCINFO)
A description example is shown. The chain control information (SCINFO) contains the program to be reproduced.
The cell numbers are described in the order of reproduction. The playback device uses this chain control information
(SCINFO), and sequentially select and reproduce program cells to be reproduced.
Thus, the reproduction of the program chains A, B and C is executed. This allows each professional
The gram chains A, B, and C are respectively reproduced by the procedure shown in FIG. In addition,
In FIG. 25, 0 to 8 indicate the numbers of the individual program cells and the reproduction sections thereof.
You.       [0065]   Next, during playback of any of the program chains A, B, and C,
The operation when the chain switching occurs will be described.       [0066]   1) During playback of program cell 1 of program chain A,
If switching to chain B occurs, playback of program chain B is
It starts with the first program cell 5.       [0067]   2) During playback of program cell 1 of program chain A,
If a switch to chain C occurs, the playback of program chain C is minimized.
It starts with the first program cell 7.       [0068]   3) After the reproduction of program cell 1 of program chain A is completed, the program
If a switch to program chain B occurs, playback of program chain B
Is started from the next program cell 2. Because program chain B
Has a second program cell 1 shared with program chain A
In order to avoid duplicate playback, the playback of program chain B is
Beginning at gram cell 2.       [0069]   4) After the reproduction of program cell 1 of program chain A is completed, the program
When switching to the program chain C occurs, the reproduction of the program chain C
It starts with the first program cell 7.       [0070]   5) After the reproduction of program cell 2 of program chain A is completed, the program
If a switch to program chain B occurs, playback of program chain B
Is started from the program cell 6. The reason is the same as in 3).       [0071]   6) After the reproduction of program cell 2 of program chain A is completed, the program
When switching to the program chain C occurs, the reproduction of the program chain C
It starts with the first program cell 7.       [0072]   7) After the reproduction of program cell 3 of program chain A is completed, the program If a switch to program chain B occurs, playback of program chain B
Beginning at program cell 6.       [0073]   8) After the reproduction of the program cell 3 of the program chain A is completed, the program
When switching to the program chain C occurs, the reproduction of the program chain C
Beginning at program cell 8. Because program chain C is 2
Secondly, it has a program cell 3 shared with program chain A.
To avoid duplicate playback, playback of program chain C is
It starts from Rule 8.       [0074]   In this way, playback between program chains with shared program cells
If a switch occurs, the next program in the shared program cell that has completed playback
Playback after switching is started from the ram cell.       [0075]   Next, reproduction control of the program chain will be described.       [0076]   As shown in FIG. 18, the chain information table contains the chain control information (SCI
NFO) are continuously recorded in the order in which the program cells are reproduced. Therefore,
By reading this chain control information in order, the continuous playback
Program chain playback.       [0077]   As shown in FIGS. 18 and 26, the chain control information (SCINFO)
Is provided with a 2-bit reproduction control area 61. In this reproduction control area 61
Based on the described reproduction control information, the reproducing apparatus continuously reproduces each program cell.
Can be recognized when the control is performed.       [0078]   The contents of the reproduction control information include the following.   00: After the program cell is reproduced, the next program cell is connected without waiting time.
Play continuously (with continuity between programs).   01: After the reproduction of the program cell, the next program cell is connected without waiting time.
Play continuously (no continuity between programs).   10: Time (PW) specified in the cell information table after reproduction of the program cell
AIT) waits until the next program cell is reproduced.   11: After the reproduction of the program cell, the reproduction is stopped.       [0079]   Next, a specific example of continuous reproduction control of program cells based on this reproduction control information will be described.
explain.       [0080]   FIG. 26 shows a description example of chain control information (SCINFO) as a specific example thereof.
ing. In this example, the program chain has five program cells.
It consists of. All angle modes are “00”, and
There is no specification of guru playback. Multi-angle playback means that during the same period on the same time axis
Among the several program cells that can be selectively played, the only program to play
In this method, the selection of the gram cell is left to the user. For example, a live broadcast of baseball on TV
Assuming that the two video data captured by the first and third base cameras, respectively.
Data is recorded, and any video is selected during playback.
It is.       [0081]   Hereinafter, with reference to the flowchart of FIG. 27, continuous reproduction control of program cells will be described.
Will be described.       [0082]   First, the playback device reads the first chain control information (SCI) from the chain information table.
NFO) (step 1) and read the first program cell number in it.
(Step 2). Next, the playback device reads the cell information table from the file management table.
Reads the start pointer of the
Then, a target cell information table is obtained (step 3). Then, the playback device
The reproduction of the program cell is executed according to the contents of the obtained cell information table (scan
Step 4).       [0083]   During this time, the playback device reads the information of the playback control area of the chain control information,
Based on the playback control information, continuous playback between program cells is controlled as follows.
You.       [0084]   If the playback control information is “00” (step 5), the playback device
After the cell reproduction is completed, the next chain control information (SCINFO) is obtained (step
Step 11), the reproduction of the next program cell is immediately started.       [0085]   If the playback control information is “01” (step 6), the playback device executes the program
• Execute Broken Link processing such as mute immediately before the end of cell playback (step 9).
), After the reproduction of the program cell is completed, the next program chain control information (SC
INFO) and immediately starts reproduction of the next program cell.       [0086]   If the playback control information is “10” (step 7), the playback device
・ After the end of cell playback, the time (PWAIT) specified in the cell information table
Eight processing is performed (step 10). Then, after the wait time has elapsed,
Acquire the next chain control information (SCINFO) and reproduce the next program cell
To start.       [0087]   When the reproduction control information is “11”, the reproduction device ends reproduction of the program cell.
After completion, the reproduction of the program chain ends (step 8).       [0088]   Therefore, when the reproduction control is executed based on the chain control information shown in FIG.
The specific procedure of the playback control is as follows. FIG. 28 shows the procedure of this reproduction control.
Show.   Chain control information number 0: S1 → S2 (acquired cell number 0) → S3 → S4 (reproduction
Cell number 0) → S5 → S11   Chain control information number 1: → S2 (acquired cell number 1) → S3 → S4 (reproduced cell No. 1) → S5 → S6 → S9 → S11   Chain control information number 2: → S2 (acquired cell number 4) → S3 → S4 (reproduced cell
No. 4) → S5 → S11   Chain control information number 3: → S2 (acquired cell number 2) → S3 → S4 (reproduced cell
No. 2) → S5 → S6 → S7 → S10 (wait processing) → S11   Chain control information number 4: → S2 (acquired cell number 3) → S3 → S4 (reproduced cell
No. 3) → S5 → S6 → S7 → S8 → End   Next, multi-angle reproduction of a program cell will be described.       [0089]   As shown in FIG. 29 and FIG. 18, the chain control information in the chain information table
Describes 2-bit angle mode information 71 and 4-bit angle number 72.
Has been recorded. The contents of the angle mode information 71 are as follows. Ang
Is a set of programs that can be selectively played back during the same period on the same time axis.
It is a set of gram cells.   00: Not an angle block.   10: Start / continue angle block   11: End of angle block   The angle number 72 is linked for each program cell constituting the angle block.
Assigned by serial numbers. Any angle number is selected by the user
As a result, the program cell having that angle number is reproduced.       [0090]   Next, the operation of multi-angle reproduction will be described. FIG. 30 shows a multi-an
It is a flowchart which shows the procedure of a guru reproduction | regeneration control.       [0091]   First, the playback device reads the first chain control information (SCI) from the chain information table.
NFO) (step 1) and read the first program cell number in it.
(Step 2). Next, the playback device reads the cell information table from the file management table.
Reads the start pointer of the
Then, a target cell information table is obtained (step 3). And the playback device The angle mode information 71 of the first chain control information is read, and based on this information,
Then, the multi-angle reproduction control is executed as follows.       [0092]   Angle mode information is “10” (start / continuation of angle block)
In the case (step 6), the playback device determines whether the user has specified an angle number.
It is checked whether or not it is (step 7). If the angle number is not specified, the playback device
Selects the default angle number (0) (step 8) and sets the angle mode
Set a flag (step 9). If an angle number is specified,
The raw device sets the angle mode flag as it is (step 9).       [0093]   Next, the playback device sets the current program cell to the angle specified by the user.
It is checked whether or not the program cell is the program cell of the file number (step 10). “YES”
In the case of, the playback device obtains the corresponding cell information table and
The reproduction of the program cell is executed according to the contents of the table (step 11), and the
Thereafter, the angle mode flag is reset (step 12). Also "NO"
In the case of, the playback device does not play the current program cell,
-Leave the flag set.       [0094]   Next, the playback device reads the information in the playback control area 61, and reads this information as "11" (program).
If the reproduction of the program chain is not completed (step 13), the chain information
The next chain control information is obtained from the cable (step 15), and the process returns to step 2.
To repeat the same process.       [0095]   In step 4, the playback device sets the angle mode information 71 to “11”.
(End of angle block) (step 4),
A check is made to see if the single mode flag is set (step 16).
If it has been set, the next chain control information is obtained through step 13 (step
15) or perform a reproduction termination process of the program chain (step 14).
.   Therefore, based on the chain control information shown in FIG. When the control is executed, a specific procedure of the reproduction control is as follows. In addition, FIG.
It is a figure showing the procedure of this multi-angle reproduction control. In addition, specified by the user
The angle number given is “1”.   Chain control information number 0: S1 → S2 (acquired cell number 0) → S3 → S4 → S5
→ S11 (reproduced cell number 0) → S12 → S13 → S15   Chain control information number 1: → S2 (acquired cell number 1) → S3 → S4 → S5 → S
6 → S7 → S9 → S10 → S13 → S15   Chain control information number 2: S2 (acquired cell number 5) S3 S4 S5 S
6 → S7 → S9 → S10 → S11 (reproduced cell number 5) → S12 → S13 → S15   Chain control information number 3: → S2 (acquired cell number 6) → S3 → S4 → S16 →
S13 → S15   Chain control information number 4: → S2 (acquired cell number 2) → S3 → S4 → S5 → S
11 (reproduction cell number 2) → S12 → S13 → S15   Chain control information number 5: → S2 (acquired cell number 3) → S3 → S4 → S5 → S
6 → S7 → S8 → S9 → S10 → S11 (reproduction cell number 3) → S12 → S13 →
S15   Chain control information number 6: → S2 (acquired cell number 7) → S3 → S4 → S16 →
S13 → S15   Chain control information number 7: → S2 (acquired cell number 4) → S3 → S4 → S5 → S
6 → S11 (reproduced cell number 4) → S12 → S13 → S14 → End   Next, additional information is added to the type of use of the program chain on this disc.
The specific code to be used will be described.       [0096]   As shown in FIG. 17, the chain information table contains the program chain
4-bit type information 74 indicating the type of use, and 8 indicating more detailed contents of the type of use
A bit specific code 73 is recorded. The specific code 73 is
Has a unique correspondence between the code and its details.
The details are different for each case. For example, as the use type of the program chain
Assume karaoke and musical instruments. In this case, the specific code is the caption The word type is indicated, and in the case of a musical instrument, it is changed to indicate the type of the musical instrument. This allows
Many types of details can be defined with fixed-length specific codes without extending the specific codes.
Can be justified.       [0097]   Next, a method of displaying the menu of the disc will be described.       [0098]   FIG. 32 shows chain control information in the chain information table constituting the menu screen.
FIG. 33 shows the configuration of (SCINFO), and FIG.
FIG. 3 is a diagram illustrating a configuration of an information table.       [0099]   As shown in FIG. 32, the chain control information (SCIN
FO) includes 2-bit block mode information 81 and 4 bits indicating the type of block.
And the block type 82 of the block. The block mode information 81 includes a plurality of
This is information indicating the relevance of the program cells. That is, this block mode
When the information 81 is "00", this program cell is not a cell constituting a block
"01" means that the program cell is the start cell of the block;
When "10", this program cell is a cell in the middle of the block.
At this time, this program cell is the end cell of the block. Ma
Also, the block type 82 indicates that this is not a block when this is “0000”,
0001 ”indicates an angle block, and“ 0010 ”indicates a menu block.
Lock.       [0100]   As shown in FIG. 33, the cell information table contains the type of the program cell.
Information 83 and a specific code 84 are described. Program cell seed
Others include movies, karaoke, and various menus. As the type of menu,
File selection, sequence (program chain) selection, audio stream selection
, Sub-video channel selection, program selection, angle selection, and the like. Specific code 8
4 indicates the language type of the menu when the type of the program cell is a menu.
You.   FIG. 34 is a diagram showing a configuration example of a file selection menu. As shown in the figure The file selection menu is configured using the first file in the data area.
Is done. That is, this file contains at least one cell information table C0 and at least one cell information table C0.
It consists of two chain information tables S0. P0 is the program chain
It is a program that is an element that makes up the application. The program may include one or more cell information
Cable.       [0101]   FIG. 35 shows a configuration example of a menu for selecting a sequence (program chain).
FIG. As shown in the figure, this menu is
The configuration is made using the configuration information table S0. Also, in this chain information table
The menu for audio stream selection and the menu for sub-video channel selection.
Each cell information table C120, C200 can be added. in this case
And multiple cell information tables to compose each menu
It is related by the block mode information 81 in the report table. Also one
Similarly, when the menu is composed of multiple screens (multiple cell information tables),
Each cell information table is associated by the block mode information 81.       [0102]   Also, one chain information is obtained by the block mode information 81 and the block type 82.
Menus and data other than menus can be configured in the information table. FIG.
Is a diagram showing an example in this case. In this example, the chain information table S1 is
The menu for angle selection and the menu for program selection are configured only at the beginning of
And two cell information tables C20 and C21. Also, the next check
The program information menu S2 has a program selection menu only at its head.
Cell information table C for composing a lower-level program selection menu
22. Further, the next chain information table S3 has
Only configure the angle selection menu below the angle selection menu
Has one cell information table C23.       [0103]   Next, a reproducing apparatus for displaying a menu of the present disc will be described.       [0104]   FIG. 37 is a block diagram showing a configuration of a function for realizing the menu display. same
In the figure, reference numeral 91 denotes a key input unit for specifying a selection item and a language type on a menu screen
It is. 92 is a menu based on the type information 83 recorded in the cell information table.
-Determine the cell information table that composes the screen, and select
A menu determination / selection unit for recognizing the entered item number. 93 is a menu screen
Playback control information recorded in a chain information table including a cell information table to be formed
Is a reproduction control information storage unit for storing the information. 94 is cell information constituting the menu screen
A cell that stores one or more data units as cell reproduction data based on a table
It is a reproduction data storage unit. Reference numeral 95 denotes a cell reproduction stored in the cell reproduction data storage unit 94.
This is a cell playback control unit that controls playback of raw data. 96 displays a menu screen
It is a display display unit. 97 is a block mode in the chain information table
Based on the information 81, the association of a plurality of cell information tables constituting the menu screen is recognized.
This is the menu block determination unit to be aware of. 98 is determined by the menu block determination unit 97
Is related to the menu screen currently being played and the menu screen to be played next.
If it is recognized, after the item is selected for the currently playing menu screen, the next
Is a menu block switching unit that switches playback to the menu screen. 99 is Meni
The specific code 73 in the cell information table forming the menu screen is stored, and this specific code is stored.
The language type of this menu screen matches the language type selected in advance based on the mode
This is a specific code determination / storage unit that determines whether or not the above is true.       [0105]   Next, the operation of the menu display of this disc will be described. FIG. 38 shows the file selection
It is a figure showing a procedure.       [0106]   First, the playback device checks the first file in the first file (file 0) in the data area.
The playback control information in the obtained chain information table.
The information is stored in the reproduction control information storage unit 93. Next, the playback device sends the first chain control information.
Get the first cell information table based on the information. Then, the playback device determines the menu.
/ Selection section 92, program cell type information 8 included in the cell information table
3 is read, and it is determined whether or not the type of the program cell is a menu. Step If it is determined that the type of the program cell is the menu, the cell reproduction control unit 9
5, the program cell is reproduced and displayed on the display unit 96 as shown in FIG.
A menu screen 101 for selecting such a file is displayed. This menu screen 1
In 01, the number of each file is displayed together with the file name (work name). Key input
When an arbitrary file number is selected by the user using the unit 91, the playback device
The selected file number is recognized by the menu judging / selecting unit 92 and corresponds to this file number.
To get the first chain information table in the file to be
The reproduction control information in the table is stored in the reproduction control information storage unit 93. Next, the playback equipment
The device obtains the first cell information table based on the leading chain control information. this
Thereafter, the playback device uses the menu determination / selection section 92 to select a program included in the cell information table.
The program / cell type information 83 is read. As a result, the type of program cell
Is determined to be a menu, the cell playback control unit 95 executes the program
-The cell is reproduced and the next menu screen is displayed on the display unit 96.       [0107]   In the playback device, the menu block determination unit 97 stores the information in the chain information table.
The block mode information 81 and the block type 82 are read, and the chain information table is read.
Whether each cell information table in the file has a relevance as a menu block
Recognize The menu screen currently being played and the menu screen to be played next
Is recognized by the menu block switching unit 98,
Plays the next menu screen after an item is selected for the menu screen being played
Switch. Thus, the last menu that is the end cell of the menu block
Can be displayed continuously.       [0108]   This disc also has multiple menu screens with the same content but different languages.
The cell information tables that make up a menu form one menu block.
Has been recorded. The language type of this menu is specified code 84 in the cell information table.
Indicated by Figure 39 shows multiple menu screens with different language types
FIG. 4 is a diagram showing an example of a cell information table group configured. In this case, set the language type in advance
By specifying, one specific menu block From the menu group that composes the
Only the ram cell can be selected and played continuously.       [0109]       [0110]       [0111]       [0112]   【The invention's effect】   According to the playback device of the present invention, the same program is used among a plurality of program chains.
Memory cells can be shared, eliminating the need to duplicate the same data.
It becomes. Thereby, the utilization efficiency of the recording capacity of the recording medium can be maximized.       [0113]       [0114]       [0115]       [0116]       [0117]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing a data structure of an optical disc according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of a PVD table. FIG. 3 is a diagram showing an example of a VTD table. 4 shows an example of an L-type PT table. FIG. 5 shows an example of an M-type PT table. FIG. 6 shows an example of a DR (00) table. FIG. 7 shows an example of a DR (01) table. FIG. 8 is a diagram showing an example of a file (n) table; FIG. 9 is a diagram showing a configuration of an optical disc reproducing apparatus for reproducing the disc shown in FIG. 1; FIG. FIG. 11 is a diagram showing a configuration of a function for determining the number of recording surfaces and a reproduction surface of a disc. FIG. 12 is a diagram showing a procedure of file access on a data structure. File access hand FIG. 14 is a diagram showing an example in which disk management information is overwritten in a lead-in area. FIG. 15 is a diagram showing a data structure of a file. FIG. 16 is a diagram showing an example of a file management table. FIG. 18 shows an example of a chain information table. FIG. 19 shows an example of a cell information table. FIG. 20 shows an example of a DAT. FIG. 21 shows program chain selection. FIG. 22 is a flowchart showing a procedure. FIG. 22 is a diagram showing an example of relocation of files. FIG. 23 is a diagram showing an example of description of branch information of three program chains. FIG. 24 is an example of description of chain control information of three program chains. FIG. 25 is a diagram showing a reproduction procedure of three program chains. FIG. 26 is a diagram showing a description example of control information of a program chain. FIG. 27 is a flowchart showing a procedure of continuous reproduction of program cells. FIG. 28 is a diagram showing a specific example of a procedure of continuous reproduction of program cells. FIG. 29 is control information of a program chain including a multi-angle. FIG. 30 is a flowchart showing a multi-angle reproduction control procedure. FIG. 31 is a diagram showing a specific example of a multi-angle reproduction procedure. FIG. 32 is a diagram showing a chain information table constituting a menu screen. FIG. 33 is a diagram showing the configuration of chain control information. FIG. 33 is a diagram showing the configuration of a cell information table forming a menu screen. FIG. 34 is a diagram showing a configuration example of a menu for selecting a file. FIG. 35 is a sequence (program chain). FIG. 36 is a diagram showing a configuration example of a menu for selection. FIG. 36 is a diagram showing a configuration example of another menu. FIG. 37 is a menu table. FIG. 38 is a block diagram showing a configuration of a function for realizing a function. FIG. 38 is a diagram showing a procedure for selecting a file. FIG. 39 is a diagram showing an example of a cell information table group constituting a plurality of menu screens having different language types. 1 ... disk identifier, 2 ... disk surface number identifier, 3 ... disk surface identifier, 4 ...
Disk identifier, 5: File management table, 6: Chain information table, 7:
Cell information table, 8 ... DAT, 9 ... DUT, 31 ... Disc recording method determination unit,
Reference numeral 32: file recording method determination unit, 41: disk recording surface number determination unit, 42: disk A / B surface determination unit, 51, 52: preliminary management area, 61: reproduction control area, 71:
Angle mode information, 72: Angle number, 73: Specific code, 74: Type information, 81: Block mode information, 82: Block type, 83: Type information, 84: Specific code, 91: Key input unit, 92: Menu determination / Selection unit, 93 ... reproduction control information storage unit, 94 ... cell reproduction data storage unit, 95 ... cell reproduction control unit, 96 ... display display unit, 97 ... menu block determination unit, 98 ... menu block switching unit, 99 ... specification Code judgment / storage unit.

Claims (1)

Claims: 1. A data unit area in which data is recorded in a file unit, and a group of data units, which are a group of a plurality of types of data to be reproduced in synchronization with each other, are recorded in the file. When the recorded data units in the data unit area by connecting one or more, met information for configuring a program cell
The program cell based on a cell information table area in which at least one cell information table that is information including cell head position information and cell end position information is recorded, and a cell information table recorded in the cell information table area. Connect one or more,
A reproducing apparatus for reproducing a recording medium on which at least one piece of chain information that is information to be configured as a program chain is recorded, wherein: a first searching means for searching for the chain information; and a first searching means. A second search unit that searches the cell information table area for one or more of the cell information tables that constitute the program chain, based on the chain information searched by the second search unit. And a third retrieval means for retrieving and reproducing one or more of the data units constituting the program cell from the data unit area based on the cell information table. 2. A data unit area in which data is recorded in a file unit, and a group of data units each of which is a group of a plurality of types of data reproduced in synchronization with each other is recorded in the file; the recorded data units linked to one or more, met information for configuring a program cell
The program cell based on a cell information table area in which at least one cell information table that is information including cell head position information and cell end position information is recorded, and a cell information table recorded in the cell information table area. Connect one or more,
One or more pieces of chain information as information for forming a program chain are recorded, and the chain information includes a number of a plurality of program cells constituting the program chain and a reproduction order of the program cells. And a program cell that can be selectively reproduced with another program cell in the same period on the same time axis for each program cell indicated by the cell number sequence. A playback device that plays back a recording medium that includes mode information indicating whether or not the cell information has been read. The first search means for searching for the chain information; and the cell information based on the chain information searched for by the first search means. Information
A second search means for searching for a table, and the mode based on the cell clearing table searched by the second search means.
Third search means for searching for information, and whether the program cell indicated by the cell number string corresponding to the chain information is the selectively reproducible program cell based on the searched mode information. Determination means for determining whether or not, when the determination means is determined as a selectively reproducible program cell, and when a desired program cell is selected from the selectively reproducible program cells, The cell information table retrieved by the second retrieval means and
Based on the serial mode information retrieved by the third retrieval means, and a fourth search means for reproducing one or more of said data units constituting the desired program cell searching than the data unit area A playback device, comprising: