JP2006107665A - Information recorder and information recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an information recorder and an information recording method which minimizes the occurrence of wasteful non-recorded areas and thereby enable the whole area of a disk to be efficiently used. <P>SOLUTION: In the information recorder, when conditions such as recording time and recording rate which have an influence upon an IFO file size are settled beforehand in program file recording such as programmed video recording, the recording of a VOB file is started after calculating an appropriate IFO size from these conditions and securing an area equivalent to the size as the recording prearrangement area of an IFO file. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an information recording apparatus and an information recording method for digitizing various types of information such as video and audio information and recording the information on a disk-type information recording medium such as an optical disk.

  In recent years, rewritable DVDs such as DVD-RAM and DVD-RW, which are phase-change optical disks having a recording capacity of several GB, are used as disk-type information recording media for recording various information such as digitized video and audio information. Recordable DVDs such as (Digital Versatile Disk) and write-once DVDs such as DVD-R have been developed. Also, MPEG (Moving Picture Image Coding Experts Group) 2, which is a coding standard for digital AV (audio / video) data, has been put into practical use.

  With such a recordable DVD and MPEG2, it has become possible to record and handle large-capacity data such as video data on an optical disc with excellent access speed. In order to take advantage of this access performance, Unlike tape recording media, new information is needed to manage where (address) data is recorded on the disk.

  On the other hand, “DVD Specifications for Rewritable / Re-recordable Discs” (hereinafter referred to as “DVD-VR format”) is defined as the management information for recording video data on a recordable DVD. ) "Has already been formulated and published. In addition, “DVD Specifications for Read-Only Discs (hereinafter referred to as DVD-Video format)”, which is a reproduction-only standard formulated for media that can only be played, such as DVD-ROM, is also recorded. It is used as a format.

  In the following description, descriptors, pointers, and the like recorded in the information recording medium as a volume file structure are defined in the ISO / IEC 13346 standard or UDF (Universal Disk Format) standard unless otherwise specified. It shall have a data structure.

The data structure of the DVD-Video format as described above will be described below with reference to the drawings.
FIG. 1 is an explanatory diagram of a physical configuration and a logical configuration showing a data structure on a disc recorded in a DVD-Video format used in a conventional information recording apparatus. Physical sector addresses for data recorded on a recordable DVD 2 shows a physical configuration managed by the file system and a logical configuration managed by the file system. A file system is a method for managing data in a disk as a directory or file.

  In FIG. 1, 100 is a recordable DVD, 101 is a lead-in area in which a reference signal necessary for stabilizing the drive servo of the optical pickup and an identification signal with other media are recorded, and 102 is for a file system. A volume area 103 in which management information is recorded, and a lead-out area 103 in which a reference signal similar to the lead-in area 101 is recorded. The lead-in area 101 is recorded at the beginning of the physical sector address, and the lead-out area 103 is recorded at the end of the physical sector address. There is a data area between the lead-in area 101 and the lead-out area 103, and logically valid data is recorded in this area. A volume area 102 is recorded at the head of the data area.

  Next, a logical configuration of data viewed through the file system will be described. In FIG. 1, reference numeral 104 denotes a root directory, 105 denotes a VIDEO_TS directory, and 106 denotes a VIDEO_TS. IFO 107 is a VIDEO_TS.107 which is a video object file for a menu included in the video manager. VOB file 108 is VIDEO_TS. VIDEO_TS., Which is a backup file of the IFO 106. BUP 109 is a video title management information file VTS — 01 — 0. IFO, 110 is a video title AV file VTS — 01 — 1. VOB and 111 are VTS_01_0. VTS — 01 — 0. Indicates BUP. Up to 99 video titles can be recorded for each media. In addition, up to 9 AV files of each video title can be recorded.

Details of the data arrangement in the file data area of the DVD-Video format will be described.
FIG. 2 is an explanatory diagram of a data structure showing the structure and arrangement relationship of file data in the DVD-Video format used in the conventional information recording apparatus. In the DVD-Video format, how the file data is arranged in the volume. Indicates whether

  In FIG. 2, reference numeral 200 denotes VMG, 201 denotes VMGI, 202 denotes VMGM_VOBS, 203 denotes VMGI backup, 204 denotes VTS, 205 denotes VTSI, 206 denotes VTSM_VOBS, 207 denotes VTSTT_VOBS, 208 denotes VTSI backup, and 209 denotes VOB. The VMG 200 is called a video manager, and is management information for the entire disc, and the VMGI 201 is a VIDEO_TS. If the IFO file 106 and VMGM_VOBS 202 are VIDEO_TS. The VOB file 107 and the VMGI backup 203 are VIDEO_TS. This corresponds to the BUP file 108. The VMG 200 is always placed at the beginning of the volume. The data arrangement in the VMG 200 is always in the order of VMGI 201, VMGM_VOBS 202, and VMGI backup 203.

  Subsequent to the VMG 200, the VTS 204 is arranged. The VTS 204 is called a video title set and corresponds to a program. In the VTS 204, the VTSI 205 is set to VTS_XX_X. If the IFO file 109 and VTSTT_VOBS 207 are VTS_XX_X. The VOB file 110 and the VTSI backup 208 are VTS_XX_X. This corresponds to the BUP file 111. The VTSM_VOBS 206 is called a video title set menu video object set and is data for a menu of a program. The data arrangement in the VTS 204 is always the order of the VTSI 205, the VTSM_VOBS 206, the VTSTT_VOBS 207, and the VTSI backup 208. As described above, the DVD-Video format is characterized in that there is a restriction in data arrangement.

  Next, the relationship between VTSI and PGC in the DVD-Video format will be described. The PGC is called a program chain and is a logical unit for reproducing the whole or a part of a program.

  FIG. 3 is an explanatory diagram of a data structure showing an arrangement relationship between VTSI and PGC in a DVD-Video format used in a conventional information recording apparatus. In FIG. 3, reference numeral 300 denotes a video title management information VTSI, 301 denotes a video title set information management table VTSI_MAT, 302 denotes a video title set PTT search pointer table VTS_PTT_SRPT, and 303 denotes a video title set program chain information table. A certain VTS_PGCIT, 304 is a video title set menu PGC unit table VTSM_PGCI_UT, 305 is a video title set time map table VTS_TMAPT, 306 is a video title set menu cell address table VTSM_C_ADT, and 307 is a video title set video object unit address map. Some VTSM_VOBU_ADMAP, 308 is VTS_C_ADT, which is a title set cell address table, 309 is VTS_VOBU_ADMAP, which is a video title set video object unit address map, 310 is PGC, 311 is PGCI which is PGC information, 312 is a program PG, 313 is a part of title PTT which is an entry point indicating the head of the PG, 314 is CELL which is a basic unit of playback content called a cell, 315 is VTSTT_VOBS which is a video title set video object set (same as VTSTT_VOBS 207 in FIG. 2), 316 is video VOB_IDN and 317 which are video object identification numbers in the object set are C_IDN and 318 which are cell identification numbers in the VOB. Shows the VOBU is an object unit.

  The PGC 310 includes PGCI 311 that is management information and VTSTT_VOBS 315 that is a video object. Here, FIG. 2 represents data actually recorded on the disc, whereas PGC is a logical unit, and VTSTT_VOBS which is actual AV data is represented by PGCI which is information defining the reproduction order. It is related. PG 312 is a set of CELLs 314. The VOB in VTSTT_VOBS 315 is uniquely indicated by VOB_IDN 316. The CELL in the VOB is uniquely indicated by C_IDN 317. The CELL in the PG 312 is associated with the CELL (C_IDN 317) in the VTSTT_VOBS 315 by the VOB_IDN 316 and the C_IDN 317. In VTS_PTT_SRPT 302, PTT information 313 indicating the head of the PG in the PGC 310 of the VTS is written. In the VTS_PGCIT 303, information on the PGC 310 of the VTS is written.

  The VTS_C_ADT 308 describes the VOB_IDN 316, C_IDN 317, the relative start address in the VTSTT_VOBS 315, and the relative end address in the VTSTT_VOBS 315 of all cells in the VTS. In the VTS_VOBU_ADMAP 309, the head addresses of all VOBUs 318 in the VTSTT_VOBS 315 are described as relative addresses in the VTSTT_VOBS 315.

Next, the data structure of VTS_PTT_SRPT of VTSI 300 will be described.
FIG. 4 is an explanatory diagram of a data structure showing an arrangement relationship of VTS_PTT_SRPT of VTSI 300 in the DVD-Video format used in the conventional information recording apparatus. 4, 400 is PTT_SRPTI which is PTT search pointer table information, 401 is TTU_SRP which is a title unit search pointer, 402 is PTT_SRP which is a PTT search pointer, 403 is PGCN which is a PGC number, and 404 is PGN which is a PG number. Show. PGCN 403 and PGN 404 written in VTS_PTT_SRPT can indicate a PG in the title of the VTS. Therefore, this information size changes depending on the number of entry points in the title.

Next, the data structure of VTS_PGCIT of VTSI 300 will be described.
FIG. 5 is an explanatory diagram of a data structure showing an arrangement relationship of VTS_PGCIT of VTSI 300 in the DVD-Video format used in the conventional information recording apparatus. In FIG. 5, 500 is VTS_PGCITI which is video title set PGCI table information, 501 is VTS_PGCI_SRP which is a VTS_PGCI search pointer, 502 is VTS_PGCI which is PGCI of VTS, 503 is PGC_GI which is general program chain information, and 504 is a program chain command table. PGC_CMDT, 505 is a program chain program map PGC_PGMAP, 506 is a cell playback information table C_PBIT, 507 is a cell location information table C_POSIT, 508 is an entry cell number of each program EN_CN, 509 is a cell playback Information C_PBI 510 indicates cell position information C_POSI. In VTS_PGCIT, cell information of PGC 310 is described. Therefore, this information size changes depending on the number of cells in the VTS.

Next, the data structure of VTSM_PGCI_UT of VTSI 300 will be described.
FIG. 6 is an explanatory diagram of a data structure showing an arrangement relationship of VTSM_PGCI_UT of VTSI 300 in the DVD-Video format used in the conventional information recording apparatus. In FIG. 6, 600 is a video title set menu PGC unit table information VTSM_PGCI_UTI, 601 is a video title set menu language unit search pointer VTSM_LU_SRP, 602 is a video title set menu language unit VTSM_LU, and 603 is VTS menu language unit information. VTSM_LUI, 604 is a VTS menu PGCI search pointer VTS_PGCI_SRP, 605 is a VTS menu PGCI VTSM_PGCI, 606 is a program chain general information PGC_GI, 607 is a program chain command table PGC_CMDT, 608 is a program chain program map PGC_PGMAP, 609 is a cell C_PBIT the raw information table, 610 denotes a C_POSIT a cell position information table. In VTSM_PGCI_UT, the PGC information of the title menu is described. This information size changes depending on the number of menu cells.

Next, the data structure of VTSM_C_ADT and VTSM_VOBU_ADMAP of VTSI 300 will be described.
FIG. 7 is an explanatory diagram of a data structure showing an arrangement relationship of VTSM_C_ADT and VTSM_VOBU_ADMAP of VTSI 300 in the DVD-Video format used in the conventional information recording apparatus. In FIG. 7, 700 is a VTSM_C_ADTI which is a VTS menu cell address table information table, 701 is VTSM_CPI which is VTS menu cell piece information, 702 is VTSM_VOBU_ADAPI which is VTS menu VOBU address map information, 703 is VTSM_VOBU_AD which is a VTS menu VOBU address. Show. In VTSM_C_ADT, address information of all cells included in the menu VOBS is written. Therefore, the information size changes depending on the number of menu cells. In VTSM_VOBU_ADMAP, address information of all VOBUs included in the menu VOBS is written. Therefore, this information size changes depending on the number of VOBUs in the menu.

Next, the data structure of VTS_C_ADT and VTS_VOBU_ADMAP of VTSI 300 will be described.
FIG. 8 is an explanatory diagram of a data structure showing an arrangement relationship of VTS_C_ADT and VTS_VOBU_ADMAP of VTSI 300 in the DVD-Video format used in the conventional information recording apparatus. 8, 800 is VTS_C_ADTI which is a VTS cell address table information table, 801 is VTS_CPI which is VTS cell piece information, 802 is VTS_VOBU_ADMAPI which is VOBU address map information included in the VTS, and 803 is VTS_VOBU_AD which is VOBU address included in the VTS. Indicates. In VTS_C_ADT, address information of all cells included in VTSTT_VOBS is written. Therefore, this information size changes depending on the number of cells in the VTS. In VTS_VOBU_ADMAP, address information of all VOBUs included in VTSTT_VOBS is written. Therefore, this information size changes depending on the number of VOBUs in the VTS.

Next, a data structure of a DVD-Video format VOB will be described.
FIG. 9 is an explanatory diagram of a data structure showing a VOB arrangement relationship in a DVD-Video format used in a conventional information recording apparatus. 9, 900 is VOBS (same as VTSTT_VOBS207 in FIG. 2), 901 is VOB (same as VOB209 in FIG. 2), 902 is VOBU (same as VOBU 318 in FIG. 3), 903 is NAV_PCK, and 904 is V_PCK. , 905 indicates A_PCK, 906 indicates SP_PCK, 907 indicates a pack header, 908 indicates a system header, 909 indicates PCI_PKT, and 910 indicates DSI_PKT. The VOBS 900 is a set of VOBs 901 having a configuration in which a plurality of VOBUs 902 are arranged in time series. The VOBS 900 corresponds to AV data of a video title set (VTS). The VOBU 902 is composed of a pack string of 2 Kbytes.

  The pack includes a video pack (V_PCK) 904 made up of picture data in GOP (Group of Pictures) units, an audio pack (A_PCK) 905 made up of audio data, and a sub-picture pack made up of sub-picture data (SP_PCK). 906, there is a navigation pack (NAV_PCK) 903 including playback control information and data search information.

NAV_PCK 903 is multiplexed at the head of each VOBU 902. The NAV_PCK 903 includes an MPEG-compliant pack header 907 and a system header 908, PCI_PKT 909 including reproduction control information, and DSI_PKT 910 including data search information.
JP 2002-63765 A

  However, in the conventional information recording method as described above, in the DVD-Video format (hereinafter referred to as Video format), when an AV file (hereinafter referred to as VOB file) is arranged according to the standard, before and after the management information file ( Hereafter, it is necessary to place the same backup file (hereinafter referred to as BUP file) as the management information file. However, the IFO file and BUP file are arranged depending on the recording time, recording rate, number of entry points, etc. of the VOB file. The size changes.

  Here, when recording a program on a DVD-R / -RW media in the Video format in real time, since the IFO file is indefinite at the start of recording, the maximum IFO file size that can be recorded in advance after the VOB file recording is completed. Since the recording of the VOB file is started after the size is secured, for example, when the recording size of the VOB file is smaller than the disk capacity, it is not always necessary to use the entire IFO file securing area and the IFO that has not been used. Since the file recording scheduled area cannot be used as a recording area due to the restrictions on the file arrangement described above, the entire disk cannot be used efficiently, which is inconvenient for the user.

  The present invention solves the above-mentioned conventional problems, minimizes the generation of useless unrecorded areas, can effectively use the entire disk, and increases the disk space available to the user. An information recording apparatus and an information recording method capable of improving user convenience are provided.

  In order to solve the above problems, an information recording apparatus according to claim 1 of the present invention is an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format. The management information data size calculating means for calculating the optimum size of the management information data based on the recording data rate and the recording time of the program, and an area for the size calculated by the management information data size calculating means, And a means for ensuring before the start position of the AV data recording area.

  According to a second aspect of the present invention, there is provided an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the partial section information of the program is recorded. Based on the management information data size calculating means for calculating the optimum size of the management information data, and an area for the size calculated by the management information data size calculating means before the start position of the recording area of the AV data. It is characterized by having a configuration provided with a means for ensuring.

  An information recording apparatus according to claim 3 of the present invention is an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, and includes the menu contents of the program. Based on the management information data size calculating means for calculating the optimum size of the management information data, and an area for the size calculated by the management information data size calculating means before the start position of the recording area of the AV data. And a means for securing.

  An information recording apparatus according to claim 4 of the present invention is an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. Management information data size calculation means for calculating the optimum size of the management information data based on the recording time and the partial section information, and an area for the size calculated by the management information data size calculation means. And a means for ensuring before the start position of the recording area.

  An information recording apparatus according to claim 5 of the present invention is an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, and the partial section information of the program And a management information data size calculating means for calculating an optimum size of the management information data based on the menu contents, and an area for the size calculated by the management information data size calculating means, as a start of the recording area of the AV data And a means for securing before the position.

  According to a sixth aspect of the present invention, there is provided an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. Management information data size calculating means for calculating the optimum size of the management information data based on the recording time and the menu contents, and an area for the size calculated by the management information data size calculating means. And a means for ensuring before the start position of the region.

  According to a seventh aspect of the present invention, there is provided an information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. Management information data size calculating means for calculating an optimum size of the management information data based on the recording time, partial section information and menu contents, and an area for the size calculated by the management information data size calculating means, And a means for ensuring before the start position of the AV data recording area.

  An information recording apparatus according to an eighth aspect of the present invention is the information recording apparatus according to the first aspect, wherein the management information data size calculating means records a program when a plurality of programs are recorded simultaneously. Based on the data rate and the recording time, the optimum size of the management information data of the program is calculated, and for each program, following the area for the size calculated by the management information data size calculation means, the AV data A means for starting recording is provided.

  An information recording apparatus according to a ninth aspect of the present invention is the information recording apparatus according to any one of the first to seventh aspects, wherein the information recording apparatus is different from the recording content considered in the management information data size calculating means. It is characterized by comprising means for determining that recording is being performed and means for performing recording to reduce partial section information in the AV data of the program.

  An information recording apparatus according to a tenth aspect of the present invention is the information recording apparatus according to any one of the first to ninth aspects, wherein the information recording format is a DVD-Video format. The medium is configured to be compatible with DVD-R.

  An information recording apparatus according to an eleventh aspect of the present invention is the information recording apparatus according to any one of the first to ninth aspects, wherein the information recording format is a DVD-Video format. The medium is configured to be compatible with DVD-RW.

  According to a twelfth aspect of the present invention, there is provided an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. And an optimum size of the management information data is calculated based on the recording time, and an area for the calculated size is secured before the start position of the recording area of the AV data. .

  According to a thirteenth aspect of the present invention, there is provided an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the program partial section information is recorded. The management information data is calculated based on the optimal size, and an area for the calculated size is secured before the start position of the recording area of the AV data.

  An information recording method according to claim 14 of the present invention is an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format. On the basis of this, the optimum size of the management information data is calculated, and an area for the calculated size is secured before the start position of the recording area of the AV data.

  An information recording method according to claim 15 of the present invention is an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. And calculating the optimum size of the management information data based on the recording time and the partial section information, and securing the area for the calculated size before the start position of the recording area of the AV data. It is characterized by.

  According to a sixteenth aspect of the present invention, there is provided an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the program partial section information is recorded. And calculating the optimum size of the management information data based on the menu contents, and securing the area for the calculated size before the start position of the recording area of the AV data. .

  An information recording method according to claim 17 of the present invention is an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. And calculating the optimum size of the management information data based on the recording time and the menu contents, and securing the area for the calculated size before the start position of the recording area of the AV data. Features.

  An information recording method according to claim 18 of the present invention is an information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the recording data rate of the program is recorded. A method of calculating an optimum size of the management information data based on the recording time, partial section information, and menu contents, and securing an area for the calculated size before the start position of the recording area of the AV data It is characterized by that.

  An information recording method according to claim 19 of the present invention is the information recording method according to claim 12, and when recording a plurality of programs simultaneously, based on the recording data rate and recording time of the program, An optimum size of program management information data is calculated, and recording of AV data is started for each program following the area of the size calculated by the management information data size calculation means.

  An information recording method according to a twentieth aspect of the present invention is the information recording method according to any one of the twelfth to eighteenth aspects, and is considered when calculating an optimum size of the management information data. It is determined that the recording is different from the recorded content, and the partial section information is reduced and recorded in the AV data of the program.

  An information recording method according to claim 21 of the present invention is the information recording method according to any of claims 12 to 20, wherein the information recording format is a DVD-Video format, and the information recording medium As a feature, it is a method corresponding to DVD-R.

  An information recording method according to claim 22 of the present invention is the information recording method according to any one of claims 12 to 20, wherein the information recording format is a DVD-Video format, and the information recording medium As a feature, it is a method corresponding to DVD-RW.

  As described above, additional recording is performed on a DVD medium in the DVD-Video format, and conditions such as recording time and recording rate that influence the IFO file size are determined in advance when recording a program file such as reserved recording. In such a case, it is possible to calculate the appropriate IFO file size from these conditions, and secure the amount as the IFO file recording scheduled area, and then start recording the VOB file.

  As described above, according to the present invention, in the case of additional recording on a DVD medium in the DVD-Video format, the recording time, recording rate, etc. that influence the IFO file size in advance during recording of a program file such as reserved recording. When the above conditions are established, an appropriate IFO file size is calculated from these conditions, and the recording of the VOB file can be started after securing the size as an IFO file recording scheduled area.

Therefore, the generation of useless unrecorded areas can be minimized, the entire disk can be used effectively, and the disk space available to the user can be increased.
As described above, a higher quality image can be recorded for a longer time, and user convenience can be improved.

  In addition, since the data arrangement of a plurality of programs can be determined, a plurality of programs can be recorded simultaneously, which is effective in improving user convenience. Furthermore, by optimizing the partial section information of the program, it is possible to continue recording corresponding to the management information file size.

  In particular, when recording on a disc for a long time at a low bit rate, the number of programs that can be recorded by the user can be increased, and the number of management information files can be increased accordingly.

  Hereinafter, an information recording apparatus and an information recording method showing embodiments of the present invention will be specifically described with reference to the drawings. Here, the case where DVD-R which is a write-once DVD is used as a recording medium will be described as an example.

First, the configuration of the information recording apparatus will be described.
FIG. 10 is a functional block diagram showing the information recording apparatus and information recording method of the present embodiment. In FIG. 10, 1000 is an input signal, 1001 is an output signal, 1002 is a user interface (hereinafter referred to as UI) unit, 1003 is a system control unit, 1004 is an input unit, 1005 is an encoder unit, and 1006 is a stream buffer unit. , 1007 is a decoder unit, 1008 is an output unit, 1009 is a drive unit, and 1010 is a DVD-R which is a recording medium.

  The UI unit 1002 includes an input device such as an operation key and an output device such as a display device (monitor). The UI unit 1002 receives a request for starting recording or starting playback from the user, and sends the received request to the system control unit 1003. The input unit 1004 converts an audio / video signal or the like input via an antenna terminal and an external input terminal such as a tuner or an audio / video input terminal into frame data using an A / D converter. Then, the converted frame data is sent to the encoder unit 1005. The output unit 1008 converts the frame data sent from the decoder unit 1007 into an audio / video signal by a D / A converter. The converted audio / video signal is output to a monitor via an external output terminal such as an audio / video output terminal.

  The encoder unit 1005 starts the encoding process when receiving an encoding start command from the system control unit 1003, and stops the encoding process when receiving an encoding stop command. Here, the encoding process refers to a process of receiving frame data sent from the input unit 1004, encoding the received frame data, and generating a VOB in a program stream format in MPEG.

  Further, every time the VOBU constituting the VOB is generated, the encoder unit 1005 sends the VOBU information regarding the generated VOBU to the system control unit 1003, and sends the generated VOBU to the stream buffer unit 1006. Then, the encoding process is repeatedly executed until an encoding stop command is received from the system control unit 1003. Here, the VOBU information includes the VOBU video frame playback start time (VOBU_S_PTM), the size of the first I picture (Reference_Picture_Size), the VOBU size (VOBU_Size), the playback time (PB_Time), and the aspect ratio. , Information including audio mode, number of audio streams, and the like. This is used to create a management information file.

  The decoder unit 1007 starts the decoding process when receiving a decoding start command from the system control unit 1003, and stops the decoding process when receiving a decoding stop command. Here, the decoding process refers to a process of receiving and decoding the VOBU sent from the stream buffer unit 1006 and restoring the frame data from the received VOBU. Further, the decoder unit 1007 sends the restored frame data to the output unit 1008. The decoding process is repeatedly executed until a decoding stop instruction is received from the system control unit 1003.

  The stream buffer unit 1006 includes a recording medium, a buffer, a read / write control program, and the like. Then, in response to a command from the system control unit 1003, management information and VOBU read processing and write processing are executed. Specifically, when the stream buffer unit 1006 receives a VOBU write command from the system control unit 1003, the stream buffer unit 1006 executes a VOBU write process described later. When a VOBU read command is received, a VOBU read process described later is executed. When a management information write command is received, a management information write process described later is executed. When a management information read command is received, a management information read process described later is executed.

  Here, the VOBU write process refers to a process of receiving the VOBU sent from the encoder unit 1005, storing the received VOBU in the buffer, writing the VOBU stored in the buffer to the recording medium, and clearing the buffer. If a write error occurs when writing VOBU to the recording medium, the system control unit 1003 is notified that a write error has occurred. The VOBU reading process refers to a process of reading a VOBU written on a recording medium, storing the read VOBU in a buffer, sending the VOBU stored in the buffer to the decoder unit 1007, and clearing the buffer. The management information writing process refers to a process of receiving management information sent from the system control unit 1003 and storing the received management information as a management information file on a recording medium. The management information reading process refers to a process of reading management information stored in the management information file and sending the read reproduction control information to the system control unit 1003. If the management information file is not stored in the recording medium, the system control unit 1003 is notified of a read error.

  The management information includes reproduction control information calculated from the VOBU information received during recording, and is stored in the recording medium as a management information file when recording is completed. At the time of reproduction, the management information is referred to by the system control unit 1003. Refers to information for controlling reproduction of the VOBU (or VOB) stored in. In the DVD-Video format, the management information is VIDEO_TS. IFO file and VTS_XX_X. Recorded as an IFO file.

In the information recording apparatus configured as described above, a basic recording operation in the DVD-Video format will be described below with reference to FIG.
In FIG. 10, when a program recording operation is instructed by the UI unit 1002, the system control unit 1003 starts a video stream information recording operation. Video stream information input as the input signal 1000 is converted from an analog signal to a digital signal by an A / D converter in the input unit 1004. The encoder unit 1005 compresses the video stream information (digital signal) sent from the input unit 1004 by encoding, and outputs it to the stream buffer unit 1006. The stream buffer unit 1006 temporarily stores compressed video stream information (digital signal) and the like, and further outputs the information to the drive unit 1009.

  Writing to the DVD-R 1010 is performed by the drive unit 1009 through the optical head H1. Compressed video stream information (digital signal) or the like is recorded at a designated position on the DVD-R 1010 controlled by the system control unit 1003. In the DVD-Video format, the video stream information (digital signal) is VTS_XX_X. It is recorded as a VOB file (VTS_01_1.VOB110 in FIG. 1).

  During this recording, the encoder unit 1005 notifies the system control unit 1003 of VOBU information for creating a management information file. In the DVD-Video format, the management information file is a VIDEO_TS. IFO file 106, and VTS_XX_X. Recorded as an IFO file 109. When recording stop is instructed from the UI unit 1002, the system control unit 1003 stops the recording operation of the video stream information. Further, a management information file is recorded on the DVD-R 1010.

In the DVD-Video format described above, the arrangement of recording data is limited, so further explanation will be added.
FIG. 11 is an explanatory diagram of a data structure showing the relationship between the procedure and data arrangement when recording is performed in the DVD-Video format in the information recording apparatus and information recording method of the present embodiment.

  In FIG. 11, 1100 is a state before starting recording of DVD-Video recording, 1101 is a state after stopping recording of the first program of DVD-Video recording (stream data recording is completed), 1102 is recording of the first program of DVD-Video recording State after stop (VTSI backup recording complete), 1103 State after stopping recording of the first program of DVD-Video recording (VTSI recording complete), 1104 State of after stopping recording of the second program of DVD-Video recording (stream data recording) (Completed) 1105 is a state after the recording of the second program of DVD-Video recording is stopped (VTSI backup recording is completed), 1106 is a state after the recording of the second program of DVD-Video recording is stopped (VTSI recording is completed), and 1107 is DVD- The state after the recording of the second program of the video recording is stopped (the VTSI error of the third program). 1108 is the state after the finalization of DVD-Video recording, 1109 is the lead-in, 1110 is the UDF bridge, 1111 is the VMG, 1112 is the program extent information, 1113 is the VTSI of the first program, and 1114 is the first program VOBS, 1115 is the VTSI backup of the first program, 1116 is the VTSI of the second program, 1117 is the VOBS of the second program, 1118 is the VTSI backup of the second program, 1119 is the anchor, 1120 is the lead-out. In the DVD-Video format, it is necessary to place VMG 1111 that is information on the entire disk at the head of the file data area.

  However, in an unrecorded disk or a disk with space, the program to be recorded on the disk is undefined, so the VMG 1111 is undefined and cannot be recorded. Similarly, the volume structure and file structure of the file system are undefined. Therefore, it is necessary to start recording the video stream information of the program after preliminarily reserving the volume structure, the file structure, and the area where the VMG is to be recorded (areas indicated by 1110 and 1111) at the head of the volume.

  Further, VTSI which is management information of each program is determined after the recording of each program is completed. Since VTSI and VTSTT_VOBS need to be placed prior to VTSTT_VOBS at the relative address to be recorded, VTSTT_VOBS should be recorded after pre-reserving the area where VTSI is to be recorded before recording VTSTT_VOBS. Need to start.

Based on the restrictions on the recording arrangement as described above, the recording operation in the DVD-Video format will be described from the viewpoint of data arrangement with reference to FIG.
First, the volume structure of the file system, the file structure, and the recording area of the VMG 1111 are reserved at the head of the volume. Further, before recording a program, a recording area of VTSI 1113 is reserved (1100). Thereafter, VTSTT_VOBS 1114 which is a video stream of the program is recorded (1101). After the program recording ends, VTSI 1113 is determined. This VTSI 1113 is recorded in two places: an area following the VTSTT_VOBS 1114 and an area reserved in advance before program recording (1102, 1103). The former is a VTSI backup 1115. This is a one-time program recording procedure.

  At this time, in order to access the VTS, pointer information recorded in the VMG 1111 is necessary. However, the VMG 1111 is recorded when the program to be recorded on the entire disk is determined. Therefore, in order to access the VTS when the VMG 1111 is not yet recorded, the arrangement information of each VTS may be separately recorded as temporary information until the VMG 1111 is determined (1103). Here, the arrangement information of each VTS is referred to as program extent information 1112. By recording the program extent information 1112 in an area indicated by a fixed address or a physical address obtained from a drive, each VTS is accessed based on the program extent information 1112 and the video stream is reproduced. Is possible. If the user does not record any more programs on the disc, or if the disc runs out or the disc becomes defective and no more programs can be recorded, VMG 1111 is determined.

  Furthermore, the volume structure and file structure of the file system are determined. At this time, the volume structure of the file system, the file structure, and the VMG 1111 are sequentially recorded in the reserved volume head area (areas indicated by 1110 and 1111). Then, the start volume descriptor pointer (anchor 1119) of the file system is recorded in an area adjacent to the end address of the disk volume.

  Finally, the drive unit 1009 physically closes the volume and records the lead-in 1109 and lead-out 1120. Such processing for determining the volume is called finalization (1108). After the finalizing process, the recording process using the DVD-Video format is completed.

  With reference to FIG. 10, the information reproducing operation for a DVD in which information in the DVD-Video format is recorded using the information recording apparatus and the information recording method as described above will be described below.

When the reproduction operation is instructed from the UI unit 1002, the system control unit 1003 starts the reproduction operation. The drive unit 1009 reads digital information (compressed video stream information and management information) from the DVD-R 1010 through the optical head H1. The stream buffer unit 1006 temporarily stores the information. The system control unit 1003 reads information on the stream buffer unit 1006 in units of decoding and outputs the information to the decoder unit 1007. The compressed video stream information and the like are decompressed to the original information by the decoder unit 1007, further converted from a digital signal to an analog signal by D / A conversion in the output unit 1008, and connected to the output unit 1008. Playback information is displayed on a monitor screen of a receiver or the like.
(Embodiment 1)
An information recording apparatus and an information recording method according to Embodiment 1 of the present invention will be described.

  FIG. 12 is a flowchart showing the overall operation of the information recording apparatus and information recording method of the present embodiment. FIG. 13 is a flowchart showing a recording operation (step) in the DVD-Video format in the information recording apparatus and information recording method of the present embodiment.

  When a disc is loaded in this apparatus (YES in 1200), the system control unit 1003 checks whether it is an unrecorded disc (1201). In the case of an unrecorded disk (YES in 1201), an area necessary for UDF bridge and VMG recording is reserved in the disk as preparation before recording in the DVD-Video format (1202). This means that program data is recorded at least after the reserved area.

  When a recording operation (recording) is instructed from the UI unit 1002 (YES in 1203), the system control unit 1003 starts recording in the DVD-Video format through the DVD-Video format recording step (1204).

  In this DVD-Video format recording step 1204, as shown in FIG. 13, first, a VTSI area is calculated (1300). At this time, the VTSI area is normally calculated in consideration of the maximum number of standards. However, for example, when the recording instruction is reserved recording and the recording time and recording bit rate are known in advance, the number of VOBUs and CELLs generated by the recording can be calculated. Since the VOBU is generated about every 0.5 seconds, the number of VOBUs can be obtained by dividing the recording time converted to seconds by 0.5.

  Here, CELL is a set of VOBUs. In addition, it is necessary to record navigation information effective in CELL called NAV_PAK at the head of each VOBU in CELL. In this case, VOBUs for the CELL size can be temporarily accumulated and generated and recorded in the buffer of the encoder unit 1005 or the stream buffer unit 1006. Therefore, the CELL size is determined as a system requirement. Since the VOBU size is determined from the recording bit rate, the number of VOBUs included in the CELL is determined. The number of CELLs is obtained by dividing the number of VOBUs in the entire recording by the number of VOBUs included in the CELL.

  Accordingly, the sizes of VTS_VOBU_ADMAP, VTS_C_ADT, and VTS_PGCIT whose sizes change depending on the number of VOBUs and the number of CELLs in VTSI can be obtained.

Therefore, depending on the recording time and recording bit rate conditions, the VTSI size can be suppressed to a size that satisfies the maximum number of standards.
The size of the VTSI area calculated in this way is reserved as a VTSI area (1301). Then, the encoder unit 1005 starts encoding frame data from the input unit 1004 to generate a VOBU. The encoder unit 1005 outputs VOBU to the stream buffer unit 1006. VOBU information related to the VOBU is notified to the system control unit 1003 each time. The system control unit 1003 accumulates the notified VOBU information in the memory in the system control unit 1003 for generating VTSI (1302). Also, the encoder unit 1005 notifies the system control unit 1003 of the NAV_PCK information of each VOBU.

  The system control unit 1003 instructs the stream buffer unit 1006 to write VOBU to the disk (1303). Until the end of recording is instructed from the UI unit 1002, VOBU generation from the encoder unit 1005 to VOBU writing to the disk in the stream buffer unit 1006 are repeated.

  When the end of recording is instructed from the UI unit 1002 (YES in 1304), the system control unit 1003 generates VTSI and VTSI backups based on the accumulated VOBU information, and stores them in an area reserved for VTSI of the disk in advance. The VTSI is recorded, and further the VTSI backup is recorded in the area following the VTSTT_VOBS (1305). This completes the recording of the VTS.

This completes the DVD-Video format recording step. When a playback operation is instructed from the UI unit 1002 (YES in 1205), the system control unit 1003 performs a program playback operation (1206).
(Embodiment 2)
An information recording apparatus and an information recording method according to Embodiment 2 of the present invention will be described. Here, a different part from the case of Embodiment 1 is demonstrated.

In the calculation of the VTSI area in the DVD-Video format recording step, for example, it is known in advance that the recording time is fixed as in the case of reserved recording, and an entry point is generated every minute in the program according to the user's instruction. The number of entry points is determined. Thereby, the size of VTS_PTT_SRPT of VTSI is determined. This can be reflected in the reservation of the VTSI area.
(Embodiment 3)
An information recording apparatus and information recording method according to Embodiment 3 of the present invention will be described. Here, a different part from the case of Embodiment 1 is demonstrated.

  In the calculation of the VTSI area in the DVD-Video format recording step, for example, if a menu is provided for each title, and if the menu size can be estimated, the number of CELLs and VOBUs are determined, and VTS_VOBU_ADMAP, VTS_C_ADT , The size of VTS_PGCIT can be determined. This can be reflected in the reservation of the VTSI area.

As the information recording apparatus and information recording method of the present embodiment, the case of at least two kinds of embodiments among the case of the above-described Embodiment 1, the case of Embodiment 2, and the case of Embodiment 3 are used. It is good also as what combined.
(Embodiment 4)
An information recording apparatus and information recording method according to Embodiment 4 of the present invention will be described. As the information recording apparatus and information recording method of the fourth embodiment, a case where a plurality of programs are recorded simultaneously will be described. In addition, here, a different part from the first embodiment will be described.

FIG. 14 is a flowchart showing a recording operation (step) in the DVD-Video format in the information recording apparatus and information recording method of the fourth embodiment.
When a recording operation (recording) is instructed from the UI unit 1002 (YES in 1203), the system control unit 1003 starts recording in the DVD-Video format through the DVD-Video format recording step (1204).

  In this DVD-Video format recording step 1204, as shown in FIG. 14, first, a program number (#i) is initialized, and a VTSI area of the corresponding program number (#i) is calculated (1400). At this time, the VTSI area is normally calculated in consideration of the maximum number of standards. However, for example, when the recording instruction is reserved recording and the recording time and recording bit rate are known in advance, the number of VOBUs and CELLs generated by the recording can be calculated. Since the VOBU is generated about every 0.5 seconds, the number of VOBUs can be obtained by dividing the recording time converted to seconds by 0.5.

  Here, CELL is a set of VOBUs. In addition, it is necessary to record navigation information effective in CELL called NAV_PAK at the head of each VOBU in CELL. In this case, VOBUs for the CELL size can be temporarily accumulated and generated and recorded in the buffer of the encoder unit 1005 or the stream buffer unit 1006. Therefore, the CELL size is determined as a system requirement. Since the VOBU size is determined from the recording bit rate, the number of VOBUs included in the CELL is determined. The number of CELLs is obtained by dividing the number of VOBUs in the entire recording by the number of VOBUs included in the CELL.

  Accordingly, the sizes of VTS_VOBU_ADMAP, VTS_C_ADT, and VTS_PGCIT whose sizes change depending on the number of VOBUs and the number of CELLs in VTSI can be obtained.

  Therefore, depending on the recording time and recording bit rate conditions, the size of the VTSI can be suppressed to a size that satisfies the maximum number of standards. The size of the VTSI area calculated here is reserved as the VTSI area of the corresponding program number (#i) (1401). If the recording time and recording bit rate are known, the AV data size is also determined. Therefore, the recording area of the VTSI backup is also determined. That is, the start address of the VTS to be placed next can be determined.

  Therefore, when the recording time and the recording bit rate are known, the location of the next VTS can be determined before recording of the AV data is completed. The reservation of the VTSI area of the corresponding program number (#i) is repeated until the program number (#i) exceeds N (number of simultaneously recorded programs) from the determined leading address of the VTS (1402). In this way, it becomes possible to determine recording start addresses for AV data of a plurality of programs, and a plurality of programs can be recorded simultaneously.

  Then, the encoder unit 1005 starts encoding frame data from the input unit 1004 to generate a VOBU. The encoder unit 1005 outputs VOBU to the stream buffer unit 1006. VOBU information related to the VOBU is notified to the system control unit 1003 each time. The system control unit 1003 accumulates the VOBU information notified in association with each program in the memory in the system control unit 1003 for generating VTSI (1403). Also, the encoder unit 1005 notifies the system control unit 1003 of the NAV_PCK information of each VOBU.

  The system control unit 1003 instructs the stream buffer unit 1006 to write VOBU to the disc in correspondence with each program (1404). Until the end of recording is instructed from the UI unit 1002 (1405), the VOBU writing from the encoder unit 1005 to the disk of the stream buffer unit 1006 is repeated.

  When the end of recording is instructed from the UI unit 1002 (YES in 1405), the system control unit 1003 generates VTSI and VTSI backups corresponding to each program based on the accumulated VOBU information, and stores the disc in advance. VTSI is recorded in an area reserved for VTSI, and VTSI backup is recorded in an area subsequent to VTSTT_VOBS (1406). Thereby, simultaneous recording of VTS corresponding to a plurality of programs is completed.

  The information recording apparatus and information recording method of the present invention can minimize the generation of useless unrecorded areas, can effectively use the entire disk, increase the disk space available to the user, This can improve convenience and can be applied to an information recording apparatus such as a DVD recording apparatus that records video and audio information on a recordable DVD in the DVD-Video format.

Explanatory drawing of a physical configuration and a logical configuration showing a data structure on a disc recorded in a DVD-Video format used in a conventional information recording apparatus Explanatory drawing of the data structure which shows the structure and arrangement | positioning relationship of the file data in the DVD-Video format used with the information recording device of the conventional example Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VTSI and PGC in the DVD-Video format used with the information recording device of the conventional example Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VTSI VTS_PTT_SRPT in the DVD-Video format used with the information recording apparatus of the conventional example Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VTS_PGCIT of VTSI in the DVD-Video format used with the information recording device of the conventional example Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VTSM_VTCI_UT of VTSI in the DVD-Video format used with the information recording device of the conventional example Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VTSM_VT_ADT of VTSI in the DVD-Video format used with the information recording device of the prior art example, and VTSM_VOBU_ADMAP Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VTSI VTS_C_ADT and VTS_VOBU_ADMAP in the DVD-Video format used with the information recording apparatus of the conventional example Explanatory drawing of the data structure which shows the arrangement | positioning relationship of VOB in the DVD-Video format used with the information recording device of the conventional example Functional block diagram showing an information recording apparatus and an information recording method of an embodiment of the present invention Explanatory drawing of the data structure which shows the relationship between the procedure at the time of recording with the DVD-Video format in the information recording device and information recording method of the embodiment, and data arrangement Flowchart showing the overall operation of the information recording apparatus and information recording method of the embodiment 7 is a flowchart showing a recording operation by the DVD-Video format in the information recording apparatus and information recording method of the embodiment 7 is a flowchart showing a recording operation by the DVD-Video format in the information recording apparatus and information recording method of Embodiment 4 of the present invention.

Explanation of symbols

100 recordable DVD
101 Lead-in 102 Volume structure 103 Lead-out 104 Root directory 105 VIDEO_TS directory 106 VIDEO_TS. IFO file 107 VIDEO_TS. VOB file 108 VIDEO_TS. BUP file 109 VTS_01_0. IFO file 110 VTS_01_1. VOB file 111 VTS_01_0. BUP file 200 VMG
201 VMGI
202 VMGM_VOBS
203 VMGI backup 204 VTS
205 VTSI
206 VTSM_VOBS
207 VTSTT_VOBS
208 VTSI backup 209 VOB
300 VTSI
301 VTSI_MAT
302 VTS_PTT_SRPT
303 VTS_PGCIT
304 VTSM_PGCI_UT
305 VTS_TMAPT
306 VTSM_C_ADT
307 VTSM_VOBU_ADMAP
308 VTS_C_ADT
309 VTS_VOBU_ADMAP
310 PGC
311 PGCI
312 PG
313 PTT
314 CELL
315 VTSTT_VOBS
316 VOB_IDN
317 C_IDN
318 VOBU
400 PTT_SRPTI
401 TTU_SRP
402 PTT_SRP
403 PGCN
404 PGN
500 VTS_PGCITI
501 VTS_PGCI_SRP
502 VTS_PGCI
503 PGC_GI
504 PGC_CMDT
505 PGC_PGMAP
506 C_PBIT
507 C_POSIT
508 EN_CN
509 C_PBI
510 C_POSI
600 VTSM_PGCI_UTI
601 VTSM_LU_SRP
602 VTSM_LU
603 VTSM_LUI
604 VTSM_PGCI_SRP
605 VTSM_PGCI
606 PGC_GI
607 PGC_CMDT
608 PGC_PGMAP
609 C_PBIT
610 C_POSIT
700 VTSM_C_ADTI
701 VTSM_CPI
702 VTSM_VOBU_ADAPI
703 VTSM_VOBU_AD
800 VTS_C_ADTI
801 VTS_CPI
802 VTS_VOBU_ADAPI
803 VTS_VOBU_AD
900 VOBS
901 VOB
902 VOBU
903 NAV_PCK
904 V_PCK
905 A_PCK
906 SP_PCK
907 Pack header 908 System header 909 PCI_PKT
910 DSI_PKT
1000 Input signal 1001 Output signal 1002 UI unit 1003 System control unit 1004 Input unit 1005 Encoder unit 1006 Stream buffer unit 1007 Decoder unit 1008 Output unit 1009 Drive unit 1010 DVD
1109 Lead-in 1110 UDF bridge 1111 VMG
1112 Program extent information 1113 VTSI
1114 VOBS
1115 VTSI backup 1116 VTSI
1117 VOBS
1118 VTSI backup 1119 anchor 1120 lead out

Claims (22)

  An information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein an optimum size of the management information data is determined based on a recording data rate and a recording time of the program An information recording apparatus comprising: a management information data size calculating unit for calculating; and a unit for securing an area for the size calculated by the management information data size calculating unit before a start position of the recording area of the AV data.   An information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management calculates the optimum size of the management information data based on partial section information of the program An information recording apparatus comprising: an information data size calculating unit; and a unit for securing an area for the size calculated by the management information data size calculating unit before a start position of the recording area of the AV data.   An information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management information calculates an optimum size of the management information data based on the menu contents of the program An information recording apparatus comprising: a data size calculating means; and means for securing an area for the size calculated by the management information data size calculating means before the start position of the recording area of the AV data.   An information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management information data is recorded based on a recording data rate, a recording time, and partial section information of the program. Information comprising: a management information data size calculating means for calculating an optimum size; and means for securing an area for the size calculated by the management information data size calculating means before the start position of the recording area of the AV data. Recording device.   An information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein an optimum size of the management information data is determined based on partial section information and menu contents of the program. An information recording apparatus comprising: a management information data size calculating unit for calculating; and a unit for securing an area for the size calculated by the management information data size calculating unit before a start position of the recording area of the AV data.   An information recording apparatus for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management information data is optimized based on a recording data rate, a recording time, and menu contents of the program. Management information data size calculating means for calculating an appropriate size and means for securing an area for the size calculated by the management information data size calculating means before the start position of the recording area of the AV data apparatus.   An information recording device for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management is based on the recording data rate, recording time, partial section information and menu contents of the program Management information data size calculating means for calculating the optimum size of the information data, and means for securing an area for the size calculated by the management information data size calculating means before the start position of the recording area of the AV data. An information recording apparatus provided.   2. The information recording apparatus according to claim 1, wherein the management information data size calculating means optimizes the management information data of the program based on the recording data rate and the recording time of the program when a plurality of programs are recorded simultaneously. An information recording apparatus comprising means for starting recording of AV data following an area corresponding to the size calculated by the management information data size calculating means for each program.   8. An information recording apparatus according to claim 1, wherein means for determining that recording different from the recording content considered in said management information data size calculating means is performed, and AV data of the program An information recording apparatus comprising: means for performing recording to reduce partial section information.   10. The information recording apparatus according to claim 1, wherein the information recording format is a DVD-Video format, and corresponds to a DVD-R as an information recording medium.   10. The information recording apparatus according to claim 1, wherein the information recording format is a DVD-Video format and corresponds to a DVD-RW as an information recording medium.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein an optimum size of the management information data is determined based on a recording data rate and a recording time of the program An information recording method for calculating and securing an area for the calculated size before a start position of the recording area of the AV data.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, and calculating an optimum size of the management information data based on partial section information of the program, An information recording method for securing an area for the calculated size before a start position of a recording area of the AV data.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein an optimal size of the management information data is calculated based on menu contents of the program, An information recording method for securing an area for the calculated size before a start position of the recording area of the AV data.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management information data is recorded based on a recording data rate, a recording time, and partial section information of the program. An information recording method for calculating an optimum size and securing an area for the calculated size before a start position of the recording area of the AV data.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein an optimum size of the management information data is determined based on partial section information and menu contents of the program. An information recording method for calculating and securing an area for the calculated size before a start position of the recording area of the AV data.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management information data is optimized based on a recording data rate, a recording time, and menu contents of the program. An information recording method for calculating an appropriate size and securing an area for the calculated size before a start position of the recording area of the AV data.   An information recording method for recording AV data and management information data of a program on an information recording medium in an information recording format, wherein the management data is based on the recording data rate, recording time, partial section information and menu contents of the program. An information recording method for calculating an optimum size of information data and securing an area for the calculated size before a start position of the recording area of the AV data.   13. The information recording method according to claim 12, wherein when a plurality of programs are recorded simultaneously, an optimum size of the program management information data is calculated based on the program recording data rate and the recording time, and each program is recorded. An information recording method for starting recording of AV data following an area for the size calculated by the management information data size calculating means.   19. The information recording method according to claim 12, wherein it is determined that recording different from the recording content considered when calculating the optimum size of the management information data is performed, and the program Recording method for recording with reduced partial section information in the AV data.   21. The information recording method according to any one of claims 12 to 20, wherein the information recording format is a DVD-Video format and corresponds to a DVD-R as an information recording medium.   21. The information recording method according to claim 12, wherein the information recording format is a DVD-Video format, and the information recording medium is compatible with a DVD-RW.

Images