JP2002157837A - Information recording medium and device/method for recording and reproducing information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate editing work by making display in editing easy to understand. SOLUTION: The medium has a data area for recording an object and a management area for recording management information to be used for reproducing the object. In the management information, a cell showing the break of a object is defined, program chain information for making a program by connecting plurality of cells is defined and program chain information as the management information is defined as the management information. The describing area of this information includes a plurality of pieces of program chain information and an area for describing the respective pieces of program chain (PGCI) information. In addition, program information(PGI) area for describing program information and an area for describing text search point information (PRM-SRPN) are secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium, an information recording / reproducing apparatus and a method effective for use in, for example, a DVD (digital video disk) recording / reproducing apparatus.

[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
A DVD standard using the AC3 audio compression method using the Moving Image Coding Expert Group (2) 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. In addition, this standard uses ISO9660 and micro-UDF so that data can be read by a computer.
Is supported.

[0005]

Further, at present, DVD
-Optical discs, such as RAMs, on which data can be written and rewritten have been developed. Such DVD-
The RAM is required to have a function that allows the user to easily edit. However, at present, there is no recording / reproducing apparatus for general home use that can be easily handled by a user for editing or the like.

Therefore, the present invention provides an information recording medium which allows a user to easily perform an editing operation, and enables a detailed editing operation.
An object of the present invention is to provide an information recording / reproducing apparatus and method.

[0007]

In order to achieve the above object, according to the present invention, basically, a pack including contents is defined, a unit in which a plurality of the packs are defined is defined, and a plurality of the units are defined. An object is defined, and in a recording medium having a data area in which the object is recorded and a management area in which management information used to reproduce the object is recorded, the management information includes: A cell indicating a delimiter is defined, program chain information for connecting a plurality of the cells to form a program is defined, and the management area includes a program chain information area that describes at least the program chain information as the management information. Secured in the program chain information area. An area for describing the program chain information is secured, and a program information area for describing the program information about the corresponding program is secured in the area for describing each program chain information. An area for describing search point information is secured.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall configuration diagram of a disk recording / reproducing apparatus according to an embodiment of the present invention. In FIG.
FIG. 3 shows a correspondence relationship between a data recording area of the optical disk (DVD-RAM) of FIG. 1 and a recording track of data recorded thereon. FIG. 3 shows information (data recording area or DVD) recorded on the optical disk of FIG. 5 shows an example of a hierarchical structure of the volume of a video volume).

First, an optical disk will be described. FIG.
1, the optical disc 10 has a structure in which a pair of transparent substrates 14 provided with a recording layer 17 are bonded together with an adhesive layer 20. Each substrate 14 is formed of polycarbonate having a thickness of 0.6 mm, and the adhesive layer 20 is formed of, for example, an ultraviolet curable resin having a thickness of 40 μm. These pair of substrates 14
Are bonded so that the recording layer 17 is in contact with the surface of the adhesive layer 20 to form a large-capacity optical disk 10 having a thickness of 1.2 mm. Reference numeral 22 denotes a center hole, and reference numeral 24 denotes a clamp area. 25 is an information area, 26 is a lead-out area, 27 is a lead-in area, and 28 is a data recording area. On the recording layer of the information area 25, recording tracks are continuously formed, for example, in a spiral shape. The continuous track is divided into physical sectors, and the sectors are assigned serial numbers. This sector is used as a recording unit.

In FIG. 3, the disk 10 is a DVD-R
In the case of AM (or DVD-R), the disk 10 is stored in a cartridge. DVD-RAM disk 10
Is loaded into a disk recording / reproducing apparatus in a state where the disk is stored in the cartridge 11, and when the cartridge 11 is pulled out, only the disk 10 remains in the recording / reproducing apparatus. The data recording track of the recording layer 17 is divided into a plurality of logical sectors (minimum recording units) having a fixed storage capacity.
It is recorded based on this logical sector. The recording capacity of one logical sector is 20 which is the same as the data length of one pack.
It is set to 48 bytes.

FIG. 4 has the structure of the information area 25. The logical format of this structure is defined in accordance with, for example, one of the standards ISO 9660 and Universal Disk Format (UDF) Bridge.

The data recording area 28 is allocated as a volume space.
Space for volume and file structure information (volume / file structure), space for DVD standard application (DVD video area), space for non-application of this standard (other recording area)
including. The volume space 28 is physically divided into a number of sectors, and the physical sectors are numbered consecutively. The logical address of the data recorded in the volume space 28 means a logical sector number as defined by ISO9660 and the UDF bridge.
The logical sector size here is 2048 bytes, like the effective data size of the physical sector. The logical sector numbers are assigned consecutive numbers in ascending order of the physical sector numbers. Note that unlike the logical sector, redundant information such as error correction information is added to the physical sector.

The volume space 28 has a hierarchical structure and includes a volume / file structure area, a DVD video area including one or more video title sets VTS # n, and other recording areas. These areas are partitioned on the boundaries of logical sectors. One logical sector is 204
Eight bytes are defined, and one logical block is also defined as 2048 bytes. Therefore, one logical sector is defined as being equivalent to one logical block.

The volume / file structure area is an ISO
9660 and a management area defined in the UDF bridge. Based on the description of this area, the contents of the video manager VMG are stored in a system memory (not shown) inside the DVD video recorder.

The video manager VMG is composed of a plurality of files. The file describes information (video manager information VMGI, video manager menu video object set VMGM_VOBS, video manager information backup file VMGI_BUP) for managing the video title sets (VTS # 1 to #n).

Each video title set VTS includes MP
Video data (video pack described later) compressed according to the EG standard, audio data compressed or uncompressed according to a predetermined standard (audio pack described later), and run-length compressed sub-picture data (sub-picture pack described later; 1) Pixels include bitmap data defined by a plurality of bits, and information for reproducing these data (a navigation pack to be described later; presentation control information PCI and data search information DS).
I is stored.

The video title set VTS also includes a plurality of files, like the video manager VMG. Each file contains video title set information VTS
I, video title set menu object set VTSM_VOBS, video title set title video object set VTSTT_VOBS, video title set information backup VTSI_BU
P is included.

In the other recording area, information usable in the above-described video title set VTS or other information unrelated to the video title set can be recorded. This area is not mandatory.

Video Title Set The title video object set VTSTT_VOBS defines a set of one or more video objects VOB. Each V
OB defines a collection of one or more cells. And
By a group of one or more cells, the program chain P
A GC is configured.

If one PGC is compared to one drama,
The plurality of cells constituting the PGC can be interpreted as corresponding to various scenes in the drama. The contents of the PGC (or the contents of the cell) are determined by, for example, a software provider that produces the contents recorded on the disc 10.

FIG. 5 illustrates a directory structure of information (data file) recorded on the optical disc 10. Video title set V under the root directory
TS subdirectory and audio title set A
The TS subdirectories are linked. Then, in the subdirectory of the video title set VTS, various video files (VMGI, VMGM, VTSI, V
(Files such as TSM, VTS, etc.) are arranged and each file is managed in an orderly manner. A specific file (for example, a specific VTS) can be accessed by specifying a path from the root directory to the file.

The DVD-RAM (DVD-RW) disk 10 or DVD-R disk 10 is preformatted so as to have the above-mentioned directory structure, and this preformatted disk 10 is used as an unused disk for DVD video recording. (Raw disc) can be marketed.

That is, the root directory of the preformatted raw disc 10 includes a subdirectory called a video title set (VTS). This subdirectory contains various management data files (VIDEO
O_TS. IFO, VTS_01_0. IFO) and backup files (VIDEO_TS.BUP, VT) for backing up the information of these management data files.
S_01_0. BUP) and a video data file (VTS) for storing digital moving image information, which is managed based on the contents described in the management data file.
_01_1. VOB).

The sub-directory contains a menu data file (VMG) for storing predetermined menu information.
M, VTSM).

Further, a title corresponds to, for example, one movie, and one disc includes a plurality of titles. A collection of the titles is called a title set, and the title set is composed of a plurality of files.

In addition, one disc has a file called a video manager (hereinafter referred to as VMG) as information for managing the disc. Further, in the title set (hereinafter referred to as VTS), information for managing the title set includes a video title set information (hereinafter referred to as VTSI) management information file, a video file including video data, and a VTSI. Consists of backup files.

FIG. 6 shows a video object set VTS.
13 shows a hierarchical structure of information included in TT_VOBS.

Each cell 84 is composed of one or more video object units (VOBU). And each V
The OBU is configured as an aggregate (pack sequence) of a video pack (V pack), a sub-picture pack (SP pack), and an audio pack (A pack) with the navigation pack (NV pack) at the top. That is, VOB
U is defined as a set of all packs recorded from one NV pack to immediately before the next NV pack.

These packs are the minimum units when performing data transfer processing. The minimum unit for performing logical processing is a cell unit, and the logical processing is performed for this cell unit.

The NV pack is incorporated in a VOBU so that any angle change (non-seamless reproduction and seamless reproduction) can be realized.

The playback time of the VOBU corresponds to the playback time of video data composed of one or more video groups (group of pictures GOP) included in the VOBU. It is set within the range of 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.

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 by VOBU as one unit.

In a DVD video recorder capable of recording a video title set VTS including a VOBS having this structure on the optical disk 10, there is a case where it is desired to edit the recorded contents after recording the VTS. In order to respond to this request, a dummy pack can be appropriately inserted into each VOBU. This dummy pack can be used when recording editing data later.

The VOBS for the menu is usually one V
OB, which stores a plurality of menu screen display data. On the other hand, a VOBS for a title set usually includes a plurality of VOBs.

The VOB includes an identification number (IDN # i; i =
0 to i), and the VOB can be specified by the identification number. A normal video stream is composed of a plurality of cells, but a menu video stream may be composed of one cell. Each cell has V
An identification number (C_IDN # j) is assigned as in the case of OB.

As described above, a video file has a hierarchical structure, one file is composed of a plurality of program chains, one program chain is composed of a plurality of programs, and one program is Each cell is composed of a plurality of video object units. Also, VOBU
Is composed of a plurality of packs of various types of data. A pack is composed of one or more packets and a pack header.

The video object (VOB)
Corresponds to the management data PGCI in PGC units.
The PGCI has a cell reproduction information table (C_PBIT) for managing cells.
Playback is performed in the order described in _PBIT, and the actual playback address of the cell is recorded as cell playback information (C_PBI) in C_PBIT.

Here, the DVD video is managed by the above-mentioned method, but it is also conceivable that the PGC management information and the cell management information are independent.

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.

FIG. 7 shows an example of a pack row. This pack sequence includes a navigation pack (control pack), a video pack, a dummy pack, a sub-picture pack, and an audio pack.

The navigation pack includes a pack header 1
10. Playback control information / presentation control information (P
CI) packet 116 and data search information (DSI)
The packet 117 is included. The PCI packet 116 includes a packet header 112 and PCI data 113, and the DSI packet 117 includes a packet header 114 and DSI data 115. The PCI packet 116 contains control data used for non-seamless angle switching, and the DSI packet 117 contains control data used for seamless angle switching. Here, the angle switching means changing an angle at which a subject image is viewed (camera angle).

The video pack includes a pack header 881 and a video packet 882. The dummy pack includes a pack header 891 and a putting packet 890.
The padding packet 890 is composed of a packet header 892 and padding data 893. However, the padding data 893 contains invalid data.

The sub-picture pack includes a pack header 901 and a sub-picture packet 902. The audio pack includes a pack header 911 and an audio packet 912.

The video packet 882 includes a packet header (not shown), in which a decode time stamp (DST) and a presentation time stamp (PTS) are recorded. Also, the sub-picture packet 902 and the audio packet 912
Each include a packet header (not shown), and a presentation time stamp (PTS) is recorded in those packet headers.

FIG. 8 shows the structure of one navigation pack.

The navigation pack includes a pack header 1
10, system header 111 and two packets (1
16, 117) of the navigation data.

The PCI packet 116 includes a packet header 112A, a substream ID 112B, and a PCI
It is composed of data 113. Substream ID 112
The data stream of the PCI data 113 is specified by the 8-bit code of B.

The DSI packet 117 includes a packet header 114A, a substream ID 114B, and DSI data 115. Substream ID
The data stream of the DSI data 115 is specified by the 8-bit code of 114B.

The illustrated pack header 110 and system header 111 are defined by the MPEG2 system layer. Similarly, packet header 1 of PCI packet 116
Packet header 1 of 12A and DSI packet 117
14A stores a packet start code, a packet length, and a stream ID as defined by the MPEG2 system layer.

FIG. 9 shows a PCI packet 116 included in the navigation pack arranged at the head of each VOBU. The PCI packet 116 includes PCI data 113 which is navigation data for changing display contents or reproduction contents (presentation contents) in synchronization with the reproduction state of the video data in the VOBU.

FIG. 10 shows the contents of the PCI data. P
The CI data includes PCI general information (PCI_GI) and non-seamless playback angle information (NSML_AGL).
I), highlight information (HLI), and recording information (RE).
CI). This recording information (RECI) can include an international standard copyright management code (ISRC).

FIG. 11 shows reproduction control information general information PCI_
This shows the contents of the GI.

The playback control information general information PCI_GI includes the logical block number (NV_NV) of the navigation pack.
PCK_LBN) and VOBU category (VOBU)
_CAT) and VOBU user operation control (VOBU_
UOP_CTL) and VOBU display start time (VOB_CTL)
U_S_PTM) and VOBU display end time (VOB
U_E_PTM), the display end time at the end of the sequence in the VOBU (VOBU_SE_PTM), and the cell elapsed time (C_ELTM).

Here, the logical block number (NV_P)
The CK_LBN) indicates the address (recording position) of the navigation pack including the playback control information (PCI) by the video object set (VOB) including the PCI.
This is represented by the number of relative blocks from the first logical block in S).

VOBU_CAT contains reproduction control information (PC
It describes the contents of copy protection of analog signals corresponding to video and sub-pictures in the VOBU including I). VOBU_UOP_CTL describes a user operation prohibited during a display (presentation) period of the VOBU including the reproduction control information (PCI). VOBU_S_PTM contains reproduction control information (PC
Display of VOBU including I) (presentation)
It describes the start time. More specifically,
This VOBU_S_PTM is the first GO in the VOBU.
First video in P display order (first picture)
Indicates the display start time.

VOBU_E_PTM describes the display (presentation) end time of the VOBU including the playback control information (PCI). More specifically, when video data in the VOBU is continuous, the VOBU_E_PTM indicates the display end time of the last video (last picture) in the display order of the last GOP in the VOBU.

On the other hand, when video data does not exist in the VOBU, or when the reproduction of the VOBU is stopped, the VOBU_E_PTM is a virtual line aligned with the time grid of the field interval (1/60 second for NTSC video). The end time of typical video data.

VOBU_SE_PTM describes the display (presentation) end time by the sequence end code of the video data in the VOBU including the reproduction control information (PCI). More specifically, it indicates the display end time of the last video (last picture) in the display order, including the sequence end code in the VOBU. If there is no video (picture) with a sequence end code in the VOBU,
00000000h (h means hexadecimal) is entered in BU_SE_PTM.

The C_ELTM contains reproduction control information (PC
The relative display (presentation) time from the first video frame in the display order of the cell including I) to the last video frame in the display order of the VOBU including this PCI is expressed in hours, minutes, and seconds in BCD format. And a frame. If there is no video data in the VOBU, the first video frame of the virtual video data is used as the video frame.

FIG. 12 shows the contents of the video title set VTS. This video title set VTS is composed of a plurality of files. Each file includes video title set information (VTSI), a video title set menu object set (VTSM_VOB).
S), video object set for video title set title (VTSTT_VOBS; maximum 9 files), backup of video title set information (VT)
SI_BUP).

The video title set information VTSI arranged at the head of the VTS includes a video title set information management table (VTSI_MAT; required) and a title search pointer table for a video title set part of title (for example, a chapter of a program). (VTS_PTT_SRPT; required) and a program chain information table (VTS_
PGCIT; required) and a program chain information unit table (VTS) for the video title set menu.
M_PGCI_UT; essential when VTSM_VOBS is present), video title set time map table (VTS_TMAPT; optional), and cell address table for video title set menu (VT
SM_C_ADT; essential if VTSM_VOBS is present) and a video object unit address map for video title set menu (VTSM_VO
BU_ADMAP; essential when VTSM_VOBS is present), a video title set cell address table (VTS_C_ADT; mandatory), and a video object unit address map for video title set (VTS_VOBU_ADMAP; mandatory) are described in this order. .

The contents of the video title set information management table VTSI_MAT are as follows.

The video title set information management table VTSI_MAT indicates the video title set identifier, the end address of the video title set, and whether or not the program recorded on the optical disc 10 has been completely reproduced at least once. An archive flag (ARCHIVE_FLAG; which has a function of preventing erroneous erasure when the program recorded on the optical disk 10 is to be retained without erasing the program, and this flag is omitted, and is replaced with a flag for each cell described later. ), The end address of the video title set information, the version number of the standard adopted by the corresponding optical disc 10, the category of the video title set, the end address of the video title set information management table, and the video title set information. And the start address of the video object set-menu, start address of the video object set of the video title set title is described.

Further, a start address (VTS_PTT_SRP) of the part-of-title search pointer table is searched so that a part of the video title set can be searched.
T_SA), the start address of the program chain information table (VTS_PGCIT_SA) for setting the playback order of the video title set, and the start address (VTSM_P) of the unit table of the program chain information for controlling the display of the menu of the video title set.
GCI_UT_SA), a start address (VTS_TMAPT_SA) of a time map table indicating the elapsed time of the video title set, a start address (VTSM_C_ADT_SA) of a cell address table of a cell for displaying a menu of the video title set,
The start address (VTSM_VOBU) of the VOBU address map for menu display of the video title set
_ADMAP_SA) and the start address (VTS_C_A) of the cell address table of the video title set.
DT_SA) and the start address (VTS_VOBU_) of the address map of the VOBU of the video title set.
ADMAP_SA), information such as attributes of video, audio, and sub-video, the number of sub-video streams of the video title set, the sub-video stream attribute table of the video title set, and the multi-channel audio stream attribute table of the video title set. Has been described.

FIG. 13 shows the contents of the video title set program chain information table VTSI_PGCIT.

The video title set program chain information table VTS_PGCIT includes video title set program chain information table information (V
TS_PGCITI) and a video title set program chain information search pointer (VTS_PGCI_
SRP # 1 to VTS_PGCI_SRP # n) and video title set program chain information (VTS_P
GCI).

The order of the plurality of video title set program chain information VTS_PGCI is as follows.
A plurality of video title set program chain information search pointers VTS_PGCI_SRP # 1 to VTS_
It is set regardless of the order of PGCI_SRP # n. Therefore, for example, the same program chain information VTS_PGCI can be indicated by one or more program chain information search pointers VTS_PGCI_SRP.

FIG. 14 shows the contents of the video title set program chain information VTS_PGCI. The program chain information (PGCI) includes program chain general information (PGC_GI; required), a program chain command table (PGC_CMDT; option),
Program chain program map (PGC_PGM
AP; essential if the next C_PBIT exists), cell playback information table (C_PBIT; optional), and cell location information table (C_POSIT; C_P
(Required when BIT is present)).

FIG. 15 shows a cell reproduction information table C_PB.
Shows the contents of IT. This cell reproduction information table C_PB
The IT has a maximum of 255 pieces of cell reproduction information (C_PBIn;
# N = # 1 to # 255).

FIG. 16 shows cell reproduction information C_PBI (C_PBI).
PBI # 1 to #n). That is, each C_P
BI is a cell category (C_CAT; 4 bytes), a cell playback time (C_PBTM; 4 bytes), a start address (C_FVOBU_SA; 4 bytes) of a first video object unit (VOBU) in the cell, and a first interleaved cell in the cell. The end address of the unit (ILVU) (C_FILVU_EA; 4 bytes), the start address of the last video object unit (VOBU) in the cell (C_LVOBU_SA; 4 bytes),
And the last video object unit (VO) in the cell
BU) end address (C_LVOBU_EA; 4 bytes).

In particular, in the C_PBI, an area for providing an erasure prohibition flag is secured at one byte at a relative byte position (RBP). When 0 is described in the area where the erasure prohibition flag is provided, erasure can be performed freely, but 1
When it is described, it means permanent storage. This description can be freely made by the user.

FIG. 17 shows the contents of the cell category C_CAT. This C_CAT has lower 8 bits (b0 to b
7) indicates the number of cell commands, and the next 8 bits (b8 to b)
15) indicates the cell still time, and the next 5 bits (b16
... B20) indicates a cell type (for example, karaoke or other), the next one bit (b21) indicates an access restriction flag, and the next one bit (b22) indicates a cell playback mode (for example, moving image or still). After skipping the reserved bits, the next one bit (b24) indicates the seamless angle change flag, the next one bit (b25) indicates the discontinuity flag of the system time clock STC (whether or not to reset the STC). One bit (b26) indicates an interleave arrangement flag (whether the cell specified by C_PBI is in a continuous block or in an interleaved block), and the next one bit (b27)
Indicates a seamless reproduction flag (whether or not the cell specified by C_PBI should be seamlessly reproduced).
Bits (b28 to b29) indicate a cell block type (for example, an angle block) and the last two bits (b30 to b31) indicate a cell block mode (for example, whether or not it is the first cell in a block). I have.

Here, the cell block mode is set to 00b (b
Indicates that the cell is not a cell in the block, if it is 01b, it is the first cell in the block, and if it is 10b, it is a cell in the block. , 11b indicates the last cell in the block.

When the cell block type is 00b, it indicates that it is not a part of the corresponding block.
The case of b indicates that the corresponding block is an angle block (a block including a multi-angle cell).

On the other hand, if the cell block type = 01b is detected during the reproduction, the fact that the angle block is being reproduced is indicated by blinking of an angle mark (or change of the lighting color or change of the shape of the angle mark). Can notify the viewer. This allows the viewer to know that the video being reproduced can be reproduced at another angle.

When the interleave arrangement flag is 0b, it indicates that the corresponding cell is in a continuous block (a plurality of VOBUs are continuously recorded). When the interleave arrangement flag is 1b, the corresponding cell is interleaved. Blocks (ILVUs each containing one or more VOBUs
Are interleaved).

When the seamless angle change flag is set (= 1b), it indicates that the corresponding cell is to be seamlessly reproduced, and this flag is not set (= 1b).
0b) indicates that the corresponding cell is a target for non-seamless reproduction.

That is, the interleave arrangement flag = 1
b, when the seamless angle change flag = 0b, the non-seamless angle changeable state is possible, and when the interleave arrangement flag = 1b, the seamless angle change flag = 1.
In the case of b, the seamless angle can be changed.

A media drive system having an extremely short access time (a system capable of accessing the head of a desired angle block within one frame period of video;
(Not necessarily limited to the optical disk drive system), if the interleave arrangement flag = 0b,
That is, a quick angle change can be realized between a set of VOBUs (separate angle cells) that are not interleaved.

Optical disk 10 with relatively slow access speed
Is used as a recording medium, it is preferable to allocate one round of a recording track of the disc to recording of one interleaved block. Then jump between adjacent interleaved blocks (angle change)
Sometimes the trace destination of the optical head only needs to be slightly moved by one track in the radial direction of the disk, so that a track jump with little time lag (suitable for seamless angle change) can be performed. In this case, when a track jump of one video object unit (VOBU) is performed, a time lag of one rotation of the disc can occur at the maximum. Therefore, an angle change involving a jump in VOBU units is suitable for a non-seamless angle change.

After reading the cell data of the title set from the optical disc, the DV (Digital Video Recorder user) described below can change the content of the seamless angle change flag in the read data arbitrarily.
It is possible to configure a D-video recorder.

The seamless angle change flag is a flag indicating whether the angle information (not shown) described in the navigation pack 86 is a seamless angle or a non-seamless angle. It is necessary to modify the angle information (not shown) in the table (for example, change from seamless angle information to non-seamless angle information).

When the cell playback mode is 0b, continuous playback is performed in the cell, and when it is 1b, still playback is performed in each VOBU existing in the cell.

When the user performs recording / reproduction, the access restriction flag can be used to prohibit direct selection by user operation. For example, by setting the access restriction flag of the cell in which the answer of the question book is recorded to 1b, it is possible to prohibit the user from eating the answer to the question.

The cell type can indicate the following depending on the contents of the five bits when the corresponding cell is created for karaoke, for example.

That is, if 00000b, no cell type is specified, 00001b specifies a karaoke title image, 00001b specifies a karaoke intro, and 00001b specifies a climax (rust).
Singing part other than, the singing part of the first climax is specified if 00100b, and the singing part of the second climax is specified if 00100b.
If 0b, the male vocal singing part is specified, and 0011
If it is 1b, the singing part of the female vocal is specified, and 0100
If 0b, the singing portion of mixed gender vocals is specified, and 01
001b specifies the interlude (playing only the instrument) portion, 01010b specifies the interlude fade-in, 01011b specifies the interlude fade-out, 01100b specifies the first ending performance portion, and 01101b specifies the first ending performance portion. A second ending performance part is designated. The contents of the remaining 5-bit code can be used for other purposes.

Note that the angle change can also be applied to the angle change of the background video of karaoke. (For example, a full-length video of a singer singing a guide vocal, a close-up video of the face, a close-up video of the lips, etc., can be seamlessly along the flow of karaoke music, or can be returned a little earlier to be non-seamless, and During repeat playback, the viewer can change the angle as desired.) Also, when the 8-bit content of the cell still time is 00000000b, it is specified that the still is not still, and when it is 11111111b, a timeless still is specified. , It is 00000
In the case of 001b to 11111110b, a still display having a length in which the decimal number (1 to 254) specified in this content is displayed in seconds is specified. The number of cell commands indicates the number of commands to be executed at the end of the reproduction of the cell.

FIG. 18 shows the program chain general information P
Shows the contents of GC_GI.

Program chain general information PGC_GI
Contains the contents of the program chain (PGC_CNT)
And the playback time of the program chain (PGC_PB_T
M) and user operation control information (P
GC_UOP_CTL) and a control table (PGC_AST_CT) of the program chain audio stream.
LT), a program chain sub-video stream control table (PGC_SPST_CTLT), and program chain navigation control information (PGC_NV_
CTL) and the sub-picture palette (P
GC_SP_PLT) and the start address of the command table of the program chain (PGC_CMDT_SA)
And the start address of the program map of the program chain (PGC_PGMAP_SA) and the start address of the reproduction information table of the cells in the program chain (C_
PBIT_SA) and the start address (C_POSIT_S) of the position information table of the cells in the program chain.
A).

Program chain contents PGC_CNT
Indicates the number of programs and the number of cells (up to 255) in the program chain. Video object VOB
In a program chain without a program, the number of programs is "0"
Becomes

Reproduction time PGC_P of program chain
B_TM indicates the total playback time of the program in the program chain in hours, minutes, seconds, and the number of video frames. This PGC_PB_TM has a flag (tc_flag) indicating the type of the video frame.
The frame rate (25 frames per second or 30 frames per second) and the like are specified by the contents of this flag.

The user operation control information PGC_UOP_CTL of the program chain indicates a user operation prohibited in the program chain being reproduced.

The control table PGC_AST_CTLT of the program chain audio stream can include control information of each of the eight audio streams. Each of these pieces of control information includes a flag (availability flag) indicating whether or not the audio stream is available in the corresponding program chain, and conversion information from the audio stream number to the audio stream number to be decoded.

The program chain sub-picture stream control table PGC_SPST_CTLT has a flag (availability flag) indicating whether or not the sub-picture stream can be used in the corresponding program chain, and a sub-picture to be decoded from the sub-picture stream number (32). Contains conversion information to stream numbers.

The navigation control information PGC_NV_CTL of the program chain includes Next_PGCN indicating the program chain number to be reproduced next to the currently reproduced program chain, and the navigation command “L”.
InkPrevPGC ”or“ PrevPGC_S
Previous_PGCN indicating the program chain number (PGCN) quoted by "earch ()"
And GoUp_PGCN indicating a program chain number to be returned from the program chain, and PG Playback indicating a playback mode (sequential playback, random playback, shuffle playback, etc.) of the program.
mode and Still time value indicating the still time after the reproduction of the program chain.

Sub-picture palette PG of program chain
C_SP_PLT describes 16 sets of luminance signals and two color difference signals used in a sub-video stream in the program chain.

The start address PGC_CMDT_SA of the command table of the program chain is a description area for a pre-command executed before PGC reproduction, a post command executed after PGC reproduction, and a cell command executed after cell reproduction.

The start address PGC_PGMAP_SA of the program map of the program chain describes the start address of the program map PGC_PGMAP indicating the configuration of the program in the program chain, as a relative address from the first byte of the program chain information PGCI. .

The start address C_PBIT_SA of the reproduction information table of the cells in the program chain is the start address of the cell reproduction information table C_PBIT that determines the reproduction order of the cells in the program chain, relative to the first byte of the program chain information PGCI. It is described by an address.

The start address C_POSIT_SA of the cell position information table in the program chain is the cell position information table C_POSI indicating the VOB identification number and the cell identification number used in the program chain.
T is set to the program chain information PGCI
Is described as a relative address from the first byte of

Returning to FIG. 1, the disk recording / reproducing apparatus will be described.

FIG. 1 illustrates the configuration of a device (DVD video recorder) for recording and reproducing digital moving picture information at a variable recording rate using information having the above-described structure.

The main unit of the DVD video recorder is a DV video recorder.
It has a disk drive unit 32 that drives the D-RAM or DVD-R disk 10 to rotate and reads / writes information from / to this disk 10. Further, it has an encoder unit 50 constituting the recording side, a decoder unit 60 constituting the reproduction side, and a microcomputer block 30 for controlling the operation of the apparatus main body.

The encoder section 50 has an ADC (analog
A digital converter) 51, a selector (SEL) 52,
Video encoder (V-EN) 53, audio encoder (A-EN) 54, and sub-picture encoder (SP-EN)
EN) 55, formatter 56, and buffer memory 5
7 is provided.

The ADC 51 includes an external analog video signal from the AV input section 42 and an external analog audio signal,
Alternatively, an analog TV signal + analog audio signal from the TV tuner 44 is input. The ADC 51 digitizes the input analog video signal at, for example, a sampling frequency of 13.5 MHz and a quantization bit number of 8 bits. (That is, each of the luminance component Y, the chrominance component Cr (or YR), and the chrominance component Cb (or YB) is quantized by 8 bits.) Similarly, the ADC 5
1 digitizes the input analog audio signal with, for example, a sampling frequency of 48 kHz and a quantization bit number of 16 bits.

When an analog video signal and a digital audio signal are input to the ADC 51,
C51 allows the digital audio signal to pass through.

When a digital video signal and a digital audio signal are input to the ADC 51, the ADC 51
Allows the digital video signal and the digital audio signal to pass through.

The digital video signal from the ADC 51 is
The data is sent to the formatter 56 via the video encoder 53. The digital audio signal from the ADC 51 is transmitted to the formatter 5 via the audio encoder 54.
Sent to 6.

The selector 52 selects a signal from the video mixing unit when recording a reduced image for editing described later.

The V encoder 53 has a function of converting an input digital video signal into a digital signal compressed at a variable bit rate based on the MPEG2 or MPEG1 standard.

The A encoder 54 has a function of converting an input digital audio signal into a digital signal (or a linear PCM digital signal) compressed at a fixed bit rate based on the MPEG or AC-3 standard. .

When a DVD video signal having a data structure based on the above standard is input from the AV input section 42 (for example, a signal from a DVD video player with an independent output terminal for a sub-picture signal) or a DVD having such a data structure When a video signal is broadcast and received by the TV tuner 44, a sub-video signal component (sub-video pack) in the DVD video signal is converted into a sub-video encoder (SP encoder) 55.
Is input to The sub-picture data input to the SP encoder 55 is arranged in a predetermined signal form and sent to the formatter 56.

The formatter 56 includes a buffer memory 57
Using as a work area, the input video signal,
A predetermined signal processing is performed on the audio signal, the sub-picture signal, and the like, and the recording data conforming to the format (file structure) described above is output to the data processor 36.

In the above processing, a cell is set as the minimum unit of the main video data (video data), and cell reproduction information (C_PBI) is created. Next, the configuration of the cells constituting the program chain, the attributes of the main video, the sub-video, and the audio are set (a part of these attribute information uses information obtained when encoding each data). , Information management table information (VMGI_MAT or VTSI_MAT) including various information is created.

The encoded main video data, audio data and sub-video data have a fixed size (204
(8 bytes). Dummy packs are appropriately inserted into these packs. Note that time stamps such as PTS (presentation time stamp) and DTS (decode time stamp) are described in packs other than the dummy pack as appropriate. PTS of sub-picture
Can be described as a time arbitrarily delayed from the PTS of the main video data or audio data in the same reproduction time zone.

Each data cell is arranged while a navigation pack 86 is arranged at the beginning of each VOBU 85 so that the data can be reproduced in the order of the time code of each data, thereby forming a VOB 83 composed of a plurality of cells. . A VOBS 82 that summarizes one or more VOBs 83 is
It is formatted into the structure of VTS72.

The disk drive means for reading / writing (recording and / or reproducing) information from / to the DVD disk 10 includes a disk drive 32 and a temporary storage unit 34.
And a data processor (D-PRO unit) 36 and a system time clock (STC unit) 38.

The temporary storage unit 34 buffers a certain amount of data (data output from the encoder unit 50) to be written to the disk 10 via the D-PRO unit 36, or buffers the data via the disk drive 32. It is used to buffer a fixed amount of data reproduced from the disk 10 (data input to the decoder unit 60).

For example, when temporary storage unit 34 is formed of a 4 Mbyte semiconductor memory (DRAM), an average of 4 Mbytes is used.
It is possible to buffer recording or reproduction data for about 8 seconds at a recording rate of bps. Further, when the temporary storage unit 34 is constituted by a 16 Mbyte EEPROM (flash memory), it is possible to buffer recording or reproduction data for about 30 seconds at an average recording rate of 4 Mbps. Further, when the temporary storage unit 34 is configured by a 100 Mbyte ultra-small HDD (hard disk), it is possible to buffer recording or reproduction data for 3 minutes or more at an average recording rate of 4 Mbps. Also,
The temporary storage unit 34 can be used to temporarily store recording information until the disk 10 is replaced with a new disk when the disk 10 is used up during recording.

The D-PRO unit 36 supplies the DVD recording data from the encoder unit 50 to the disk drive 32 and controls the DV reproduced from the disk 10 under the control of the microcomputer block (MPU unit) 30.
D reproduction signal is taken out of the drive 32, and management information (directory record, V
It rewrites MGI_MAT, VTSI_MAT, etc., and deletes data (file or VTS) recorded on the disk 10.

The MPU unit 30 includes a CPU, a ROM in which a control program and the like are written, and a RAM that provides a work area necessary for executing the program.

The MPU unit 30 uses the RAM as a work area in accordance with a control program stored in the ROM to detect a free space, a recording amount (the number of recording packs), a remaining amount detection, a warning, and a recording described later. Mode change instruction,
Perform other processing.

Further, the MPU unit 30 is provided with an erasure prohibition range designating function, an erasure prohibition setting function, a cell separation function, and an erasure prohibition detection function for each cell, for example, to improve the usability of the user system. I have.

The MPU unit 30 has an erasure prohibition range designating function, an erasure prohibition setting function, a program separation function, and an erasure prohibition detection function for the recording medium described in FIG. Usability of the system has been improved.

Further, the MPU unit 30 may use both the program separation function and the cell separation function.

The contents of the execution result of the MPU unit 30 to be notified to the user of the DVD video recorder are displayed on the display unit 48 of the DVD video recorder or on a monitor display on an on-screen display (OSD).

The decoder section 60 is separated by a separator 62 for separating and extracting each pack from the DVD reproduction data having the pack structure described above, a memory 63 used for performing pack separation and other signal processing, and a separator 62. A video decoder (V-DE) 64 for decoding the contents of the video pack 88, a sub-video decoder (SP-DE) 65 for decoding the contents of the sub-video pack 90 separated by the separator 62, and a separator 62 An audio decoder (A-DE) 68 for decoding the contents of the audio pack 91 and the sub-picture data from the SP-DE 65 are appropriately combined with the video data from the V decoder 64, and a menu, a highlight button, Video processor (V
-PRO section) 66.

The output of the video processor 66 is supplied to a monitor such as a television receiver via a video / digital / analog converter (V / DAC) 67 after passing through a video mixing section 200. The output from the audio decoder 68 is supplied to a digital-to-analog converter (DA).
C) It is supplied to an external speaker via 69. Further, the output of the audio decoder unit 68 can be taken out as a digital signal via an interface. The video mixing section 200 has a frame memory 2 for work.
01 is connected. Further, a key input unit 49 and a display unit 48 for a recording / reproducing device are connected to the MPU unit 30.

First, the operation of the above device will be briefly described.

FIG. 19 is a flowchart showing the operation during video recording.

First, when the MPU unit 30 receives a recording command from the key input unit 49, the MPU unit 30 reads management data via the disk drive unit 36 and determines an area to write. next,
In the determined area, management data is set in the management area so that data can be written, a write start address of video data is set in the disk drive unit 36, and preparations are made for recording data (step A1- A
5). When there is no recording space, a warning sound or display is performed. Next, the MPU unit 30 resets the time to the STC unit 38. Here, the STC unit 38 performs recording and playback based on this value using a system timer. Further, the MPU unit 30 performs other settings (step A).
6, A7). The flow of the video signal is as follows.

First, the AV signal input from the TV tuner section 44 or the external input is converted from analog to digital.
The video signal is supplied to a video encoder 53, and the audio signal is supplied to an audio encoder 54. In addition, a text signal such as a text broadcast or the like is input to the SP encoder 55 from the TV tuner 44.

Each encoder compresses each signal into packets (however, each packet is divided into packets of 2048 bytes per pack when packed, and packetized) and input to the formatter 56. Here, each encoder determines the PTS and DTS of each packet according to the value of the STC unit 38 as necessary.

The formatter 56 includes a buffer memory 57
The packet data is temporarily stored, and then the input packet data is packed and mixed for each GOP, and an NV pack is added to the head of the GOP to add
Input to the PRO unit 36.

[0136] The D-PRO unit 36 sends the disk pack unit 32 with the ECC attached as an ECC group by grouping every 16 packs. However, when the disk drive unit 32 is not ready for recording on the disk, the data is transferred to the temporary storage unit 34 and waits until data is ready to be recorded, and recording is started when the preparation is completed. Here, the temporary storage unit 34 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, address data of each NV pack is recorded in the data portion for fast-forward and rewind in each NV pack, and necessary information is recorded in the management area after recording is completed. The operation ends (Steps A8 to A14).

However, the MPU unit 30 can read and write the D-PRO unit 30 via the microcomputer bus in order to read and write the file management area and the like.

Here, at the end of recording, the erasure prohibition flag (ARCHIVE Flag) for each cell used in the present system is cleared to allow erasure. The erasure prohibition flag is described in C_PBI as described above. That is,
At the beginning of recording, erasing is enabled. If there is an erasure prohibition flag in the VMT, it is also cleared.

Further, data processing at the time of reproduction is as follows. First, when the MPU unit 30 receives the playback command,
The data in the management area is read through the D-PRO unit 36 via the disk drive unit 32, and the address to be reproduced is determined. Next, the MPU unit 30 sends the address of the data to be reproduced and the read command determined earlier to the drive unit 32.

The drive unit 32 responds to the sent command by
The sector data is read from the disk 10 and D-PRO
The error correction is performed by the unit 36 and the data is output to the decoder unit 60 in the form of pack data. In the decoder unit 60, the read pack data is received by the separator 62, packetized, and video packet data (MPEG video data) is transferred to the video decoder 64 according to the purpose of the data. Then, the sub-picture packet data is transferred to the SP decoder 65, and the NV pack is stored in an internal memory for processing by the MPU unit 30, so that the MPU unit 30 can access it at any time.

At the start of transfer, the transmitted packet data loads the PTS included in the header into the STC unit 38 (the MPU unit sets the PTS in the NV pack to the STC or the video decoder 64 The PTS of the video data is automatically set in the STC unit 38).
Each decoder performs a reproduction process in synchronization with the PTS value in the packet data (by comparing the PTS and STC values), and can reproduce a moving picture with audio subtitles on the TV monitor.

Here, in order to perform data management in detail,
As shown in FIG. 16, an erasure inhibition flag can be provided in the cell reproduction information (CPB_I).

In other words, in this system, by setting an erasure prohibition flag in units of cells, instead of in units of titles, erasure prohibition can be set in units of cells, and more detailed management becomes possible.

An operation flow will be described with reference to FIGS. FIG. 22 shows the screen transition at that time. If it is necessary to separate cells, the image is shown in FIG.
3 is shown. First, the erasure prohibition setting process is as follows.

1) The user selects a title to be prohibited from being erased.

2) Then, a time bar corresponding to the reproduction time of the selected title (VTS or PGC) and a cursor for specifying a range are displayed. At this time, by dividing each cell with a dotted line or the like, it is possible to indicate to the user that the scene inside the dotted line is the same scene (see FIG. 22).
In other words, for example, with a video camera,
Until the pause key or the recording end key is pressed, this scene corresponds to this scene. In a TV drama, it means from a commercial (CM) to the next CM.

3) The user designates the erase prohibition setting start position by using the cursor and the marker key, and stores the address of the VOBU corresponding to the designated position in the work memory. At this time, the I picture at the head of the VOBU indicated by the cursor is displayed as a reduced image to facilitate selection. The playback time at that time can also be displayed. Here, the reproduction time is obtained, for example, by calculating reproduction time information of a cell.

4) The user designates the end position of the erasure prohibition setting by using the cursor and the marker key, and stores the address of the VOBU corresponding to the designated position in the work memory.

5) It is checked whether the selected range is acceptable. If not, the work memory is cleared, and the process proceeds to item 4).

The above processing corresponds to steps B1 to B in FIG.
Equivalent to 9.

6) It is determined whether the cell needs to be divided from the set start position (whether the cell start position matches the set start position). If not, item 8 is used. ).

7) When the cell needs to be divided, the cell (CELL_N) to be divided is determined (determined from the start VOBU and end VOBU in the C_PBI of each cell. Alternatively, the cell number is determined and set at the time of setting by the cursor. Use the cell that has been set.), And perform cell division.

Specifically, the end VOBU in C_PBI of CELL-N
The start address: C_FVOBU_SA, the end address: C_LVOBU_EA, C_PBTM are stored, and the search information of NV_PACK of the VOBU to be divided is given by
C_FVOBU_SA, C_LVOBU_EA, C_P
Rewrite BTM.

Next, C_PBI following CELL-N is moved by one cell.

A new C_P with the following contents is
Record BI.

C_CAT: Same as CELL-N. C_PBTM: divided playback time. C_FVOBU_SA: Start address of the divided VOBU. C_FILVU_EA: End address of the divided ILVU.
C_LVOBU_SA: C_LVOBU_SA before change of CELL-N. C_LVOBU_
EA: C_LVOBU_EA before change of CELL-N.

8) The erase prohibition flag is set in the cells from the setting start cell to before the setting end cell.

The processing up to this point corresponds to step B1 in FIG.
0 to Step B15 in FIG.

9) It is determined whether the cell needs to be divided from the set end position (whether the cell end position matches the set end position). If not, item 11) Move to.

10) CELL to be divided (CELL_N)
(This is the start V in the C_PBI of each cell)
Determined by OBU and end VOBU. Alternatively, a cell number determined and stored at the time of setting by the cursor is used. Then, the cell is divided.

Specifically, the head address of the head VOBU in the C_PBI of CELL_N: C_FVOBU_S
A, end address: C_LVOBU_EA, C_PBT
According to the NV_PACK search information of the VOBU to store and divide M, C_FVOBU_SA, C_LVOBU
_EA, C_PBTM are rewritten.

Next, C_PBI following CELL_N
Is moved by one cell.

[0164] A new C_PBI is recorded at the moved location.

C_CAT: Same as CELL-N. C_PBTM: divided playback time. C_FVOBU_SA: Start address of the divided VOBU. C_FILVU_EA: End address of the divided ILVU.
C_LVOBU_SA: C_LVOBU_SA before change of CELL-N. C_LVOBU_
EA: C_LVOBU_EA before change of CELL-N.

11) An erasure prohibition flag is set in the cell at the setting end.

12) Judge whether the setting is completed or not,
If not, go to 1).

The processing up to this point corresponds to step B16 in FIG.
To B23.

In this embodiment, the processing is performed based on the DVD-video format.
As used in H10-040876,
If there is a VOBU map or time map, N
Cell division processing can be performed using data from the VOBU map without using data from the V pack, and this processing can be performed only in the management area.

FIG. 24 shows an operation flow when the erasure prohibition setting is canceled in units of cells, and FIG. 25 shows a display example of a TV screen.

1) The user selects a title whose deletion is to be prohibited.

2) Selected title (VTS or PG
A time bar corresponding to the reproduction time of C) and a cursor for designating CELL are displayed (see FIG. 25).

3) The user designates the deletion prohibition setting release CELL using the cursor and the marker key.

The processing so far corresponds to steps C1 to C6.

4) It is confirmed whether or not the erasure prohibition of the designated cell can be canceled. If not, the process proceeds to item 2).

5) If erasure prohibition can be canceled, the erasure prohibition flag of the designated cell is cleared.

The processing so far corresponds to steps C7 to C9.

FIG. 26 shows a further erasing operation flow at that time, and FIG. 27 shows a display example of a TV screen.

1) The user selects a title to be deleted.

2) Target title (VTS or PGC)
It is determined whether or not there is an erasure-inhibited cell. If not, a normal erasing operation is performed. Here, each CE
The ARCHTIVE_FLAG (erase prohibition flag) in the LL's C_PBI is checked to make a determination.

3) The user is informed that the erasure-inhibited CELL exists, and the user is allowed to select whether or not to erase a portion that is not set to be erased. If "No", the process is terminated (FIG. 27).

4) Of the target PGCIs, erase-inhibited CEL
Leaving only L, erasing the other C_PBI,
Reconfigure the CI.

The processing so far corresponds to steps D1 to D6.

5) In the file management information, new management data of the VTS file deleted in units of cells is created and rewritten (steps D7 to D12).

As described above, by adding the erasure prohibition flag to C_PBI, the erasure prohibition setting can be specified in smaller units.

The present invention is not limited to the above embodiment, and various modifications can be made. That is, it is possible to add a mark (erase prohibition flag) in fine cell units, and conversely, this flag can be used as a flag for erasure. In particular, when an advanced cell is provided by dividing a cell in a specific range, erasure inhibition or erasure can be performed in a small range. This can be arbitrarily set by the processing function of the playback device.

The present invention is not limited to the above-described embodiment. Software indicating a processing procedure shown in each operation flow is recorded on a recording medium in advance, and the player reads the software and automatically executes the processing. An environment for realizing the function of each operation flow may be prepared. Therefore, this system includes that the DVD disk itself has recorded therein information (software application) for realizing the above operation flow to the player.

Another embodiment of the present invention will be further described.

FIG. 28 shows a data structure of an optical disk according to another embodiment. The lead-in area 27 includes an emboss data zone in which the light reflection surface has an uneven shape, a mirror zone in which the surface is flat (mirror surface), and a rewritable data zone in which information can be rewritten. The lead-out area 26 is also configured so that information can be rewritten.

Data recording area (volume space) 2
Reference numeral 8 denotes a volume / file management information 70 rewritable by the user and a data area DA. The volume / file management information 70 includes a data area DA.
The file information of the audio / video data recorded in the file and information on the whole volume are recorded.

In the data area DA, areas DA1 and DA3 for recording computer data and an audio / video data area DA2 for recording video / audio data can be mixedly recorded.

The audio / video data area DA2 includes control information DA21, a video object DA22, a picture object DA23, and an audio object DA24.

The control information DA21 can include control information necessary for performing processes such as recording (recording or recording), reproduction, editing, and search. For example, a file RTR.VMR of the navigation data RTR_VMG.
An IFO (to be described later) can be included in the control information DA21.

The video object DA22 can include the contents (contents) of the recorded video data. The picture object DA23 can include still image information such as a still image and a slide image. The audio object DA24 can include information on the content (content) of the recorded audio data.

A video object is constituted by a video object set (VOBS). This VOBS
Has contents corresponding to one or more program chains PGC # 1 to PGC #, each of which specifies a cell reproduction order by a different method.

For example, the following information is recorded in advance in the emboss data zone of the lead-in area 27.

(1) DVD-ROM, DVD-RAM
(DVD-RW), disc types such as DVD-R,
Disc size such as 12 cm, 8 cm, recording density, physical sector number indicating recording start / end position, and other information on the entire information storage medium.

(2) Recording power and recording pulse width, erasing power, reproducing power, linear velocity at recording / erasing,
Information on recording / reproducing / erasing characteristics.

(3) Information relating to the manufacture of each information storage medium, such as a serial number.

The rewritable zones of the lead-in area 27 and the lead-out area 26 include, for example, the following areas, respectively.

(4) An area for recording a unique disk name for each information storage medium.

(5) Test recording area (for confirming recording erasure conditions).

(6) An area for recording management information on a defective area in the data area DA.

In the above areas (4) to (6), the DVD
-RTR recorder / player (RTR video recorder or DVD
-Personal computer with RAM drive).

FIG. 29 is a view for explaining the data structure of the VOB shown in FIG. Each cell (for example, cell #m) constituting a video object is composed of one or more video object units (VOBU). Each VOBU is configured as an aggregate (pack sequence) of video packs, sub-picture packs, audio packs, dummy packs, and the like. Each of these packs has a predetermined size of 2048 bytes and is a minimum unit for performing data transfer processing.

The playback time of a VOBU corresponds to the playback time of video data composed of one or more video groups (GOPs) included in the VOBU, and the playback time is in the range of 0.4 to 1.2 seconds. Is within. One GOP is 0.5 seconds in the MPEG standard, and is image data compressed so as to reproduce about 15 frame images during that time.

If the VOBU contains video data,
GOPs composed of video packs, sub-picture packs, audio packs, and the like are arranged to form a video stream.

The packs constituting the VOBU have the same data structure except for the dummy pack. Taking an audio pack as an example, a pack header is arranged at the head, a packet header is arranged next, a substream ID is arranged next, and audio data is arranged last.

In this pack configuration, the information of the presentation time stamp PTS indicating the head time of the first frame in the packet is described in the packet header. On the other hand, the video pack has a data structure obtained by removing the substream ID from the audio pack. However, for the first video pack in the VOBU,
A predetermined system header is provided between the pack header and the packet header.

A DVD recording a program having such a video object DA22 on a disk
-With the RTR recording / reproducing machine, there is a demand to edit the recorded contents after recording the program. To answer this, a dummy pack can be appropriately inserted into each VOBU. This dummy pack can be used when recording data for editing later.

FIG. 30 shows the data structure of a dummy pack.

One dummy pack 89 includes a pack header 891 and a packet header 8 having a predetermined stream ID.
92, and padding data 983 filled with a predetermined code (invalid data). A packet header 892 and padding data 893 constitute a padding packet 890. The contents of the unused dummy pack padding data 893 have no particular meaning. The dummy pack is appropriately used when editing the recorded contents or when performing after-recording using the dummy pack as an audio pack (post-addition).

FIG. 31 shows an example of the directory structure of the optical disc in the above embodiment.

RTR. The IFO file (real-time information file) is data as management information, and is navigation data provided by a program set, a program, an entry point, a playlist, and the like. RTR_MOV. VRO file (real time recording movie video file)
This is a file in which stream data classified as a movie video object is recorded. RTR_ST
O. VRO file (real-time recording still picture video file) and RTR_STA. VR
The O file (real-time recording still picture audio file) is defined as follows. In these two files, stream data classified as a still picture VOB (video object) is recorded.
STO. The VRO file is used to record an original VOB consisting of a video part including an arbitrary sub-picture unit and an arbitrary audio part. RTR_STA.
The VRO file is used for after recording.
Used to record additional audio portions that provide an audio stream. Then, RTR_STA. V
The audio recorded in the RO file is RTR_ST
O. Used in combination with some of the video recorded in the VRO file. And still picture VOB
As long as RTR_STO. The VRO file exists, and RTR_ST as long as the additional audio part exists.
A. A VRO file exists.

As another directory, an audio manager information file (AUDI
O_TS. IFO file: audio data overall management information), audio manager information backup file (AUDIO_TS.BUP file), audio title set information file (ATS_01.IFO file: audio title set management information), audio title set audio object file (ATS_01.IFO file: audio title set management information) ATS_0.1.
AOB file... Audio data) may be present.

FIG. 32 shows a hierarchical structure of the management information (control information).

The figure shows the structure of the video manager (VMG). In particular, the original program chain information (O
RG_PGCI) and the system of the user-defined program chain information table (UD_PGCIT) are shown in hierarchical detail.

VMG is RTR (real time recording) video manager information (RTR_VMGI).
And a movie AV file information table (M_AVFI
T), still picture AV file information table (S_AVFIT), original PGC information (ORG_
PGCI), user-defined PGC information table (UD_P
GCIT), Text Data Manager (TXTDT)
_MG), and a manufacturer information table (MNFIT).

(RTR_VMGI) is VMGI_MA
T (video manager information management table) and PL_SRPT (playlist search pointer table) (FIG. 33).

In VMGI_MAT, an identification signal of the VMG, an end address of the entire VMG, an end address of the VMGI, a version number, a time zone on a disk, a still time of a still picture, a character set code of a basic text, and the like are described. Have been.

[0221] PL_SRPT describes information for searching for and accessing a playlist in the disc. The playlist is formed by a user-defined PGC. Therefore, each playlist search pointer has a PGC number corresponding to each playlist. That is, PL_SRPT describes playlist search pointer information (PL_SRPTI) and playlist search pointer (PL_SRP # n).

Play list search pointer (PL_SR
P # n) includes a playlist type (identification as a movie playlist, still picture playlist, or hybrid playlist), a PGC number, a time when the playlist is increased, basic text information, the playlist, For example, a text search pointer, thumbnail pointer information, and the like are described.

In the movie AV file information table (M_AVFIT) in FIG. 32, movie AV file information table information (M_AVFITI), movie VOB stream information #n (M_VOB_STI # n), and movie AV file information (MV_AVFI) are described. (FIG. 34).

In M_AVFITI of FIG. 34, the number of movie AV file information, the number of movie VOB stream information, and the end address are described. Also, M_V
OB_STI # n describes a video attribute, the number of audio streams, the number of sub-picture streams, the attribute of each audio stream, the attribute of a sub-picture stream, the color palette of a sub-picture, and the like.

Further, M_AVFI contains movie AV file general information (M_AVFI_GI), movie VO
B information search pointer (M_VOB_SRP # n) and movie VOB information #n (M_VOB_STI # n) are described.

M_AVFI_GI contains M_VOB_S
The number is described in RP, and the start address of the corresponding movie VOB information is described in M_VOB_SRP # n.

Movie VOB information #n (M_VOB_S
TI # n) includes movie VOB general information (M_VOB).
I_GI), seamless information (SMLI), audio gap information (AGAPI), time map information (TM
API).

Movie VOB general information (M_VOBI_
GI) includes the video type, the time of the VOB head when the VOB was recorded, the time (seconds) of the VOB head when the VOB was recorded, the movie VOB stream information number, the start PTM of this VOB (presentation Time), and the end PTM (presentation time) of this VOB is described.

The video type indicates whether this VOB is a normal type or a temporary erase type. It also indicates whether the audio stream # 0 is the original stream, or whether the stream is partially or entirely corrected. Whether the audio stream # 1 is an original stream or a modified stream, furthermore, whether it is a dummy and untouched stream, and furthermore, it is a dummy at first and is used in some form and modified. Is added. In addition, it indicates whether or not it has an audio gap.

The seamless information (SMLI) is stored in this VO
A system clock reference (SCR) for the first pack needed to provide B seamlessly from the previous VOB is described. Also, the SCR of the last pack of the previous VOB is described.

Audio gap information (AGAPI)
Describes audio gap information of each audio stream in the VOB, and indicates the audio stop time at a discontinuous portion.

The time map information (TMAPI) is prepared for realizing special reproduction and time search, and includes general time map information (TMAP_GI), time entry information (TM_ENT # n), and VOBU entry information (VOBU_ENT). #N) are described.

Each VOBU entry information (VOBU_E)
NT # n) includes the size and reproduction time information of each VOBU. The size of the VOBU is measured by the number of sectors, and the playback time is measured by the number of video fields.
Each time entry information is VOBU entry information to be reproduced every 10 seconds from the start of the VOB,
, The number of VOBU entries from the beginning of the VOBU, the number of frames in the VOBU with just 10 s, and address information from the beginning of the VOB.

Therefore, various VOBUs can be handled by using this time entry information. Further, the device of the present invention can use the time entry information and can correct the time entry information.

[0235] The still picture AV file information table (S_AVFIT) includes still picture AV file information table information (S_AVFITI) and still picture VOB stream information (S_VOB_STI #).
n), still picture AV file information (S_AVF)
I), still picture added audio stream information (S_AA_STI # n), and still picture added audio file information (S_AAFI) are described (FIG. 35).

The end of the table of the number of AV file information, the number of additional audio file information, the number of still picture VOB stream information, and the number of still picture additional audio stream information is included in the still picture AV file information table information (S_AVFITI). An address is described.

In the still picture VOB stream information (S_VOB_STI # n), a video attribute, an audio attribute of original audio, an attribute of a sub-picture, and a color palette of a sub-picture are described.

[0238] Still picture AV file information (S_
AVFI) includes still picture AV file general information (S_AVFI_GI) and still picture VOB group information search pointer (S_VOGI_SRP #).
n), still picture VOB group information (S_VO
GI) is described. In S_AVFI_GI, the number of still picture VOB group information is described.
OGI_SRP # n describes the start address of the still picture VOB group information.

[0239] Still picture VOB group information (S
_VOGI # n) includes still picture VOB group general information (S_VOG_GI) and still picture V
OB entry #n (S_VOG_ENT # n) is described.

[0240] S_VOG_GI contains the number of still pictures VOB, VOB stream information number, time when the first VOB of this VOB group was recorded, and this VOB.
The time when the last VOB of the OB group was recorded,
The start address of the VOB group is described. Also S_
VOG_ENT # n includes information necessary for accessing or searching for a group VOB. S_V
There are a plurality of types of OG_ENT # n. In type 1, type information indicating whether the VOB is in a normal state or temporarily erased, and size information of a video portion are described. Type 2 describes the size of the original audio part and the reproduction time of the audio part in addition to the above. In type 3, type information indicating whether the VOB is in a normal state or temporarily deleted, size information of a video portion, an additional audio group number, and an entry number of the additional audio group are described. Is done. In the type 4, information combining the information of the types 3 and 4 is described.

The still picture additional audio file information (S_AAFI) shown in FIG. 35 includes general information (S_AAFI_GI) of the file information and search pointer #n (S_AAGI_S) of the additional audio group information.
GSRP # n), additional audio group information #n (S
_AAGI # n) is described.

S_AAFI_GI describes the number of search pointers, and S_AAGI_GSRP # n describes the address of the corresponding information. In S_AAGI # n, general information and entry information are described. General information includes the number of entries, the number of additional audio stream information,
It has a start address of the stream information. The entry information includes the type of the additional audio, the size of the audio stream according to the sector, the reproduction time of the additional audio stream, and the like.

Next, a user-defined program chain information table and an original program chain information table particularly related to the present invention will be described.

The user-defined program chain information table (UD_PGCIT) contains user-defined PGC information table information (UD_PGCITI), user-defined PGC
Search pointer #n (UD_PGC_SRP # n) and user-defined PGC information #n (UD_PGCI # n) are described.

UD_PGCITI contains UD_PGC_
Number of SRP (UD_PGC search pointer), UD_P
The end address of GCIT (UD_PGC information table) is described. UD_PGC_SRP contains U
The start address of D_PGCI is described.

Although the program chain information (PGCI) exists in each of the user-defined program chain information table and the original program chain information table, their data formats are the same, and will be described in common.

The program chain information (PGCI) includes general program chain information (PGCI_GI),
Program information (PGI # n), cell information search pointer (CI_SRP # n), and cell information (CI # n) are described.

As shown in FIG. 36, the program chain general information (PGCI_GI) includes the number of programs (P
G_Ns), the number of cell search pointers (CL_SRP_
Ns) is described (FIG. 36). The program information (PGCI # 1) includes the program type (PG_T).
Y), the number of cells in this program (C_Ns), basic text information (PRM_TXTI), IT text search pointer number (IT_TEXT_SRPN), and thumbnail pointer information (THM_PTRI) are described.

The cell information #n (CI # 1) includes movie cell information and still picture cell information, both of which are shown in FIG. 32.

As shown in FIG. 32, CI # 1 includes cell general information (C_GI) and cell entry information (C_EP).
I # n) is described. Cell general information (C_GI) includes cell type (C_TY), movie VOB information search pointer number (M_VOBI_SRPN), number of cell entry point information (C_EPI_Ns), cell reproduction start time (C_V_S_PTM), and cell reproduction end time (C_V_E_PTM). Is described.

The cell entry point information (C_E)
PI), the entry point type (EP_
TY), the reproduction time of the entry point, and basic text information (PRM_TXTI) of the entry point are described. EP_TY is 0 when basic text information (PRM_TXTI) exists, and 1 otherwise.

The optical disk in which the management information is configured as described above can be recorded and reproduced by the recording and reproducing device shown in FIG. Since the operation of the apparatus of FIG. 1 has been basically described above, the characteristic operation of the present invention will be described.

That is, according to the present invention, the erasure prohibited range is set as shown in FIG.
Can be attached in program units as shown in (1).
This enables bold data management.

The operation flow will be described with reference to FIGS. FIG. 39 shows the screen transition at that time, and FIG. 40 shows an image of the program if it is necessary to separate the program. First, the erasure prohibition setting process is as follows.

1) The user selects a title whose deletion is to be prohibited.

2) Then, a time bar corresponding to the reproduction time of the selected title (VTS or PGC) and a cursor for specifying a range are displayed. At this time, by dividing each cell with a dotted line or the like, it is possible to indicate to the user that the scene within the dotted line is the same scene (see FIG. 39). That is, for example, in a video camera, the period from the start of recording to the pressing of a pause key or a recording end key corresponds to this scene. In the TV drama, commercial (C
From M) to the next CM.

3) The user designates the start position of the erasure prohibition setting using the cursor and the marker key, and saves the address of the VOBU corresponding to the designated position in the work memory. At this time, the I picture at the head of the VOBU indicated by the cursor is displayed as a reduced image to facilitate selection. Also, the playback time at that time can be displayed. Here, the reproduction time is obtained by using, for example, reproduction start time and reproduction end time information of the cell.

4) The user designates the end position of the erasure prohibition setting by using the cursor and the marker key, and stores the address of the VOBU corresponding to the designated position in the work memory.

5) It is checked whether the selected range is acceptable. If not, the work memory is cleared, and the process proceeds to item 4).

The above processing corresponds to steps D1 to D in FIG.
Equivalent to 6.

6) It is determined from the set start position whether it is necessary to divide the program (whether or not the program start position and the erasure inhibition set start position match). Shift to the processing of item 8).

7) If the program needs to be divided, the start cell number of the erasure prohibited range and the end cell number of the erasure prohibited range are determined, and it is determined whether the start cell needs to be divided next. If it is necessary to divide the program, the program is divided (steps D7, D8, D7).
9). In this division processing, there are a method of dividing the cell in a unit of a cell that is likely to be the division unit and a method of dividing the cell itself in a VOBU unit. Either one may be adopted.

The number of cells of the divided program (PG) is determined from the start cell number (D10). If the cell is divided here, the cell information (C
VO for cell entry point (C_EPI) in I)
Determined in BU units. Alternatively, the cell entry point determined and saved at the time of setting with the cursor is used. As a result, the cell entry point information increases, so that the cell information and the cell entry point in FIG. 32 are shifted by one cell, new cell information and a cell entry point are created, a cell search pointer is added, and To place. Here, C_TY in the new C_GI is the same as the original C_CY.

In addition, new program chain information (P
GCI) is created based on the cell information table (D11). This PGCI is a PGCI for the new program PG1 'in FIG.

Next, it is determined whether or not division at the end cell number is necessary (step D12). The example of FIG. 40 shows a case where cell division is necessary also for the end cell. In this case, the number of cells from the second half of the cell divided at the previous erasure prohibition start position to the first half of the cell divided at the erasure prohibition end position is counted, and cell information (CI) of these cells is created. Based on this, a new PG
Create a CI. This PGCI is a PGCI for the new program PG2 in FIG. 40 (D13, D1
4).

Further, the number of cells from the latter half of the cells divided at the erasure inhibition end position to the last cell of the program PG1 (before division) is counted, and cell information (CI) of these cells is created. And based on this, a new P
Create GCI. This PGCI is a PGCI for the new program PG3 in FIG. 40 (D15, D1
6).

8) The erasure prohibition flag (protect flag) is set in the program type (P_TY) at the setting end from the setting start position (D17).

9) It is determined whether or not the setting is completed. If not, the process proceeds to step D3.

In the above description, the erasure prohibition flag is added to the program type. However, the present invention is not limited to this. If an area where the erasure prohibition flag can be added to the information of the cell belonging to the program is secured, An erasure prohibition flag may be further added to this area.

Further, the erasure prohibition flag may be written twice in both the management information for managing the program and the cell, or the management may be performed independently by the program and the management by the cell may be used separately. It may be made to be possible. That is, two modes, that is, a mode in which the erasure prohibition flag can be added as described above in a program unit and a mode in which an erasure prohibition flag can be added in a cell unit, may be used.

FIG. 41 shows an operation flow for canceling the erasure prohibition setting set for each program as described above. FIG. 41 shows a display example of a TV screen.

1) The user selects a title whose deletion is to be prohibited.

2) Selected title (VTS or PG
A time bar corresponding to the reproduction time of C) and a cursor for designating a program are displayed (see FIG. 41). In this case, for example, the portion of the program in which the erasure prohibition is set is displayed with a different time bar color (for example, a hatched portion).

3) When the cursor is moved to the erasure prohibition start position or the end position, the reproduced image of the I picture at that position can be viewed in a reduced state.

4) The user designates the erase prohibition setting release program by using the cursor and the marker key. The processing so far corresponds to steps E1 to E6.

5) It is confirmed whether erasure prohibition of the designated program can be canceled. If not, the process proceeds to item 2).

6) If erasure prohibition can be canceled, the erasure prohibition flag in the PGCI of the designated program is cleared. The processing up to this point is from steps E7 to E9
Is equivalent to

Thereafter, new program chain information is reconstructed. For example, in order to become the original program PG described with reference to FIG.
Will be constructed again.

FIG. 43 shows a further erasing operation flow at that time, and FIG. 44 shows a display example of a TV screen.

1) The user selects a program or a title to be erased.

2) It is determined whether or not an erase prohibition flag is included in the PGI of the program. If not, a normal erase operation is performed. Here, the determination is made by checking the PGI erasure prohibition flag. For normal erase, PGI
The cell is determined from the cell information belonging to the group, and the VOB information belonging to the determined cell information is determined. That is, V
OB and its playback time (S_PTM (start time), E_PTM (end time)) are determined, and VOB information and the video object unit (V
OBU) is determined. Then, the corresponding VOBU is deleted from the VOB file, and the corresponding VOBU information, cell information,
Delete PGI from VMG file (step F
4). This erasing method may use AVFI for other management information.

3) The user is informed that an erasure prohibition program exists, and the user is allowed to select whether or not to erase a portion for which erasure is not set. In the case of "No", the process ends (FIG. 44).

4) Original PGI of target program
Among them, only the erasure-inhibited program is left, the other programs are erased, and only the necessary PGI is reconfigured.

The processing so far corresponds to steps F1 to F6.

5) In the file management information, new management data of the VMG file deleted in units of program is created and rewritten (steps F7 to F8).

The above-described recording medium, recording method, recording apparatus, and reproducing apparatus according to the present invention are summarized as follows.

[0287] A feature of the present invention lies in the area of the management information for reproduction in the management area of the recording medium. That is, in this area, an area in which the erasure prohibition flag is provided for each program and / or each cell is secured.

[0288] The recording medium of the present invention comprises a management area and a data area. In the data area, data is recorded in a plurality of sequences, and each program (sequence) comprises a plurality of cells. One cell is composed of a data unit, and the data unit is recorded by packing video and audio to be reproduced within a predetermined time into a plurality of packs, and manages a program (sequence) in the management area. This is a recordable information recording medium in which a management table, a management table for managing cells, and a management table for managing data units are present independently or included (subordinate) to each other.

An information recording medium in which an area where erasure inhibition information is recorded in the program management table or the cell management table is secured. Alternatively, erasure prohibition information may be secured on both sides.

According to the present invention, there is provided a method or apparatus for recording data on a recording medium as described above, wherein a cell erasure prohibition setting process or a process for adding erasure prohibition information to the program, the cell management table, or both. It is characterized by having a part.

Further, when erasure prohibition is designated for each cell, there is provided a means for determining whether or not the designated cell is at a break in the program. Means) and a cell dividing process (means) for dividing a program into cells based on the result of the cell division detecting process when the program needs to be divided.

In this case, if it is necessary to divide the cells, it is needless to say that the cell dividing process may be used together.

Further, the data unit (VOBU)
A cell division detecting process (means) for determining whether or not a designated data unit is at a cell break when erasure prohibition is specified in units; and a cell division detecting process based on a result of the cell division detecting process. And a cell division process (means) for dividing a cell when necessary.

According to the present invention, when an erasure prohibition range is set, a time bar corresponding to the playback time of the sequence is displayed, and a cursor is displayed on the time bar to designate the erasure prohibition range. It has a designation process (means) and a video display process (means) for displaying the video of the data unit closest to the reproduction time corresponding to the position of the cursor, thereby facilitating the user to designate erasure inhibition. .

Further, according to the present invention, a time bar corresponding to the playback time of a sequence is displayed, and a cursor is displayed on the time bar to specify a deletion prohibited range, and A video display process (means) for displaying a reproduction time corresponding to the position of the cursor is provided to make it easy for a user to designate deletion prohibition.

According to the present invention, when erasure is designated in sequence units in the information recording / reproducing processing (means) for recording / reproducing on / from the recording medium, there is an erasure prohibition program (or cell) in the designated sequence. An erasure prohibition range detection process (means) for determining whether or not an erasure prohibition program (or cell) exists, based on the detection result, and a sequence for reconfiguring the sequence only with the erasure prohibition program (or cell) Reconstruction processing (means)
And characterized by having

Further, the present invention has a program (or cell) erasing section for erasing only the erasing program (or cell).

Further, according to the present invention, when erasure is designated in units of programs (sequences), an erasure prohibition detecting unit for judging whether or not the designated program is an erasure prohibition program and a fact that an erasure prohibition flag exists are provided. It has a display unit for notifying. Furthermore, it has a designation unit for designating erasure inhibition setting / cancellation on a cell basis. Further, there is provided an erasure prohibition unit for prohibiting erasure of the program (or cell) to which the erasure prohibition information is added. Further, it has an erasure prohibition canceling unit for canceling the erasure prohibition of the program (or cell) to which the erasure prohibition information is added. Furthermore, it has a combination of the above functions or a single function.

The scope of the present invention relates to original program chain information (OPGC) constructed in the order of data recording.
Including that the above-mentioned erasure prohibition flag may be set only in I), and that the above-mentioned erasure prohibition flag is set in user-defined program chain information (UD_PGCI) formed by the user independently selecting from the original program chain. Is also good.

When the program is divided, the program may be divided in units of cells, or the cells themselves may be divided. In case of dividing by cell unit, VO at the beginning of the cell
It is preferable that the erasure prohibition range can be set with reference to the reduced screen included in the BU. As the unit of the program, various units such as a unit between commercials, a unit of recording date and time, a unit of continuous recording period, or a unit defined by a user are conceivable, but any unit may be adopted.

[0301] The recording information of the recording / reproducing system includes a movie AV file and a still picture AV file, and it goes without saying that the present invention can be applied to editing any of these files.

FIGS. 45 and 46 show still another embodiment, and show an operation flowchart in the case where the erasure prohibition range is set and it is first determined whether or not cell division is necessary. .

[0303] Steps H1 to H11
This is the same as steps B1 to B11 shown in FIG. If the cell has to be divided in step H10, the cell is determined (step PH1).
1).

Next, reference is made to the VOBU entry information in the real-time video manager. This is because in this disk system, file information is managed by M_VOBI # n as shown in FIG.
This is because time map information exists in #n, and entry information of each VOBU (video object unit) is described in the time map information.

VOBU entry information (VOBU_EN)
T # n) includes the size and playback time information of each VOBU. The size of the VOBU is measured by the number of sectors,
The playback time is measured by the number of video fields. Each time entry information is the VOBU entry information to be reproduced every 10 s from the start of the VOB, the number of VOBU entries from the beginning of the VOBU, the number of frames in the VOBU with just 10 s, and the number of frames from the beginning of the VOB. Is shown.

Therefore, various VOBUs can be handled by using the time entry information. Further, the device of the present invention can use the time entry information and can correct the time entry information.

[0307] Therefore, cell information can be determined by referring to VOBU entry information that is symmetrical to be divided and determining a cell division point in VOBU units. This cell information (CI) is information for a new cell in the first half of the division. Also, since one cell has been added, in order to secure an area for writing cell information, one cell information (CI # n) is moved by one to secure a writing location for new cell information (H12, H12). H13).

Next, cell information (CI) for the latter half cell obtained by dividing the original cell (before division) is determined. Next, it is determined whether the division of the cell at the end of the erasure prohibition range is necessary (H15). If there is no need to divide the program, the process moves to step H20 to determine whether or not the program needs to be divided.

If division is necessary, the flow shifts to step (H16) to determine a cell to be divided. Then, a cell division point is determined from the VOBU entry information of the cell to be divided.
When the division point is determined, new cell information (CI) for a new cell that falls within the erasure prohibited range is determined (step H).
17). Then, another cell information (CI # n) is moved by one to create a writing location of the new cell information (step H18).

Next, the cell information (CI) of the new cell in the latter half of the divided cells is determined.

Next, it is determined whether or not the program needs to be divided. Cell is a single program (PG)
To determine if they belong to If there is no need to divide the program, the erasure prohibition flag is set in the program type (PG_TY) of the program within the protection range (step H28). If the program needs to be divided, the number of cells of the program to be divided is determined from the start cell number (step H24). Next, new program information (PGI) (FIG. 36) is added, and the number of cells C_Ns from the start cell to the end cell is updated (H27).
Then, the erasure prohibition flag is set to the program type (PG_TY) of the program within the protection range (step H28). It is determined whether the erasure prohibition range setting has been completed (step H29), and if not, the process returns to step H2.

[0312]

As described above, according to the present invention,
It is possible to provide an information recording medium, an information recording / reproducing apparatus, and a method that allow a user to easily perform an editing operation and perform a detailed editing operation.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a recording / reproducing apparatus according to the present invention.

FIG. 2 is a diagram for explaining the structure of an optical disc capable of recording and reproduction.

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

FIG. 4 is a view for explaining a logical structure of information recorded on an optical disc.

FIG. 5 is a view for explaining a directory structure of information (data file) recorded on an optical disc.

FIG. 6 is a view for explaining a hierarchical structure of a video object set.

FIG. 7 is a view for explaining the contents of the lowermost pack of the hierarchical structure shown in FIG. 3;

FIG. 8 is a view for explaining the contents of a navigation pack.

FIG. 9 is a view for explaining the contents of a PCI packet.

FIG. 10 is a view for explaining the contents of reproduction control information PCI.

FIG. 11 is a view for explaining the contents of reproduction control information general information PCI_GI.

FIG. 12 is a view for explaining the contents of video title set information VTSI.

FIG. 13 is a view for explaining the contents of a video title set program chain information table.

FIG. 14 is a view for explaining the contents of video title set program chain information.

FIG. 15 is a view for explaining the contents of a cell reproduction information table.

FIG. 16 is a view for explaining the contents of cell reproduction information.

FIG. 17 is a view for explaining the contents of a cell category.

FIG. 18 is a view for explaining the contents of program chain general information.

FIG. 19 is a diagram showing an example of a recording operation flow of the apparatus according to the present invention.

FIG. 20 is a diagram showing an example of an erase prohibition setting operation flow according to the present invention.

FIG. 21 is a view showing a continuation of FIG. 20;

FIG. 22 is a diagram showing an example of an image on a screen when an erasure prohibition range is set.

FIG. 23 illustrates the principle of cell division.

FIG. 24 is a diagram showing an example of a title erasure processing flow of the apparatus according to the present invention.

FIG. 25 is a diagram showing a screen display example at the time of title erasure processing of the apparatus according to the present invention.

FIG. 26 is a diagram showing an example of an erase prohibition release processing flow of the apparatus according to the present invention.

FIG. 27 is a view showing an example of a screen display at the time of canceling erasure prohibition of the apparatus according to the present invention.

FIG. 28 is an explanatory diagram showing a data structure of a recording medium according to another embodiment of the present invention.

FIG. 29 is an explanatory view showing the data structure of a recording medium according to another embodiment of the present invention.

FIG. 30 is a diagram showing an example of the structure of a dummy pack.

FIG. 31 is an explanatory diagram showing a directory structure of a recording medium according to another embodiment of the present invention.

FIG. 32 is an explanatory diagram showing a hierarchical structure of a video manager of the recording medium.

FIG. 33 is an explanatory diagram showing a hierarchical structure of video manager information of the recording medium.

FIG. 34 is an explanatory diagram showing a hierarchical structure of a movie AV file information table of the recording medium.

FIG. 35 is an explanatory diagram showing a hierarchical structure of a still pitcher AV file information table of the recording medium.

FIG. 36 is an explanatory diagram showing a hierarchical structure of program chain information of the recording medium.

FIG. 37 is a flowchart showing an operation of the reproducing apparatus when setting a program erasure prohibition range of the recording medium.

FIG. 38 is a view illustrating a sequel to FIG. 37;

FIG. 39 is a view showing an example of an image on a screen when an erasure prohibition range is set.

FIG. 40 is a view for explaining the principle of program division.

FIG. 41 is a view showing an example of a program erase processing flow of the apparatus according to the present invention.

FIG. 42 is a diagram showing a screen display example at the time of a program erasing process of the apparatus according to the present invention.

FIG. 43 is a diagram showing an example of a program erase prohibition canceling processing flow of the device according to the present invention.

FIG. 44 is a diagram showing a screen display example when the program erasure prohibition of the device according to the present invention is released.

FIG. 45 is a diagram showing an example of an erase prohibition setting operation flow according to the present invention.

FIG. 46 is a view illustrating a sequel to FIG. 45;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Optical disk, 30 ... MPU part, 32 ... Disk drive part, 34 ... Temporary storage part, 36 ... D-PRO part, 3
8 STC section, 48 key input section, 49 display section, 50
... Encoder unit, 51 ... Analog-to-digital converter, 52
... selector, 53 ... video encoder, 54 ... audio encoder, 55 ... sub-picture encoder, 56 ... formatter, 57 ... buffer memory, 60 ... decoder section, 6
2. Separator, 63 memory, 64 video decoder, 65 sub-picture decoder, 66 video processor, 68 audio decoder, 69 digital-to-analog converter, 200 video mixing unit, 201 frame memory.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H04N 5/92 H04N 5/92 H (72) Inventor Hideo Ando 70 Yanagicho, Kochi-ku, Kawasaki-shi, Kanagawa Toshiba Yanagimachi Plant Co., Ltd. (72) Inventor Hideki Mimura 70 Yanagimachi, Yuki-ku, Kawasaki City, Kanagawa Prefecture Inside the Toshiba Yanagimachi Plant Co., Ltd. (72) Inventor Kazuhiko Taira 3-3-9, Shimbashi, Minato-ku, Tokyo Toshiba AV EE Co., Ltd. (72) Inventor Yuji Ito 70 Yanagimachi, Saiwai-ku, Kawasaki-shi, Kanagawa F-term (reference) 5C052 AA04 AB03 AB04 AB09 CC11 DD04 DD10 5C053 FA14 FA25 GB05 GB06 GB38 HA30 JA21 KA01 KA24 KA25 LA06 LA07 5D044 AB05 AB07 BC06 CC04 DE02 DE03 DE23 DE48 5D110 AA17 AA26 AA28 DA01 DA04 DB02

Claims (6)

[Claims] 1. A pack including contents is defined, a unit in which a plurality of the packs are defined is defined, an object in which a plurality of the units are defined is defined, a data area in which the object is recorded, and In a recording medium having a management area in which management information used for reproduction is recorded, in the management information, a cell indicating a delimiter of the object is defined, and a plurality of the cells are connected to form a program. Program chain information is defined. In the management area, a program chain information area describing at least the program chain information is secured as the management information. Further, a plurality of program chain information is described in the program chain information area. Area is secured and each program In the area that describes the chain information,
An information recording medium, wherein a program information area for writing program information on a corresponding program is secured, and an area for writing text search point information on a program is secured in the program information area. 2. A pack including contents is defined, a unit in which a plurality of the packs are defined, an object in which a plurality of the units are defined is defined, a data area in which the object is recorded, and the object are defined. In a recording medium having a management area in which management information used for reproduction is recorded, in the management information, a cell indicating a delimiter of the object is defined, and a plurality of the cells are connected to form a program. Program chain information is defined. In the management area, a program chain information area describing at least the program chain information is secured as the management information. Further, a plurality of program chain information is described in the program chain information area. Area is secured and each program In the area that describes the chain information,
A program information area for describing program information on a corresponding program is secured. Further, an area for describing text search point information on a program is secured in this program information area. An information recording medium comprising: an area for writing cell search pointer information for searching for a desired cell; and an area for writing cell information specified by the cell search pointer information. 3. The program chain information recording area is provided with an area for describing the number of the cells constituting the corresponding program.
The information recording medium according to 1 or 2. 4. The program chain information is a plurality of pieces of program chain information for setting different programs, respectively.
2. A program type is included.
Or the information recording medium according to 2. 5. A drive unit that records information on an information recording medium and reads and outputs information recorded on the information recording medium, a recording information processing unit that supplies recording information to the drive unit, An information recording / reproducing apparatus having a reproduction processing unit for reproducing output information, wherein the information recording medium has a data area and a management area, and the information to be recorded in the data area is a pack including a content. Is defined, a unit in which the plurality of packs are aggregated is defined, and an object in which the plurality of units are aggregated is defined. In the management information, a cell indicating a delimiter of the object is defined, and the plurality of cells are connected. Program chain information for defining a program as a program, and the management area includes at least the program as the management information. Is secured describes program chain information region gram chain information, further the program chain information region, the region that describes a plurality of program chain information is secured, and a region that describes each program chain information,
A program information area for describing program information on a corresponding program is secured. Further, an area for describing text search point information on a program is secured in this program information area. In the recording information processing unit and the reproduction processing unit, an area for describing cell search pointer information for searching for a desired cell and an area for describing cell information specified by the cell search pointer information are secured. Means for reproducing a portion of the object corresponding to an operation input, and means for generating new program chain information different from the program chain information for setting a section for reproducing the object in response to the operation input Information recording characterized by having Playback device. 6. A drive unit that records information on an information recording medium and reads and outputs information recorded on the information recording medium, a recording information processing unit that supplies recording information to the drive unit, In an information recording method in an information recording / reproducing device having a reproduction processing unit that reproduces output information, the information recording medium has a data area and a management area, and the information to be recorded in the data area includes: A pack including content is defined, a unit in which the plurality of packs are aggregated is defined, an object in which the plurality of units are aggregated is defined, and in the management information, a cell indicating a break of the object is defined, and a plurality of objects are defined. Program chain information for connecting the cells to form a program is defined, and the management area includes the management information and Thus, at least a program chain information area for describing the program chain information is secured. Further, in this program chain information area, an area for describing a plurality of program chain information is secured, and an area for describing each program chain information is provided. Is
A program information area that describes program information about the corresponding program is secured. Further, an area that describes text search information about the program is secured in this program information area. An area for describing cell search pointer information for searching for a desired cell and an area for describing cell information specified by the cell search pointer point information are secured. The recording information processing unit and the reproduction processing unit And reproducing new program chain information different from the program chain information in order to reproduce a portion of the object corresponding to an operation input and to set a section in which the object is reproduced according to the operation input. Information recording and reproducing method.