WO2000005717A1

WO2000005717A1 - Information recorded medium, information recording/reproducing method, and information recording/reproducing device

Info

Publication number: WO2000005717A1
Application number: PCT/JP1999/003950
Authority: WO
Inventors: Miyuki Sasaki; Yoshiho Goto; Yoshihisa Fukushima
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 1998-07-24
Filing date: 1999-07-23
Publication date: 2000-02-03

Abstract

It is possible to record/reproduce a file on/from an information recording medium the number of rewrite operations of which is limited by using only the volume/file management information recorded in a volume space without using the management information in a read-in area to which no logical sector number is allocated. Even if part of the data cannot be recorded or reproduced because of a scratch or dust, the reliability is kept high. Chained information (110, 111), which is part of management information of a root directory file, is written doubly. The chained information (110, 111) includes position information on two pieces of chained information (117, 118) recorded subsequently to the chained information (110, 111). The chained information (110, 111) also includes the first position information on an unrecorded area (113) in the volume space and area management information on invalid extent not used for searching for a volume file structure.

Description

Description Information recording medium, information recording / reproducing method and information recording / reproducing apparatus

The present invention relates to an information recording medium in which a file managed using a volume file structure is recorded / reproduced and the number of times of recording data in the same area is limited, and an information recording / reproducing method using the information recording medium Regarding information recording and relocation, in particular, the volume from one end of the data areaThe position information of the unrecorded area when the file structure or file is added, and the volume file structure information or the file information before or after the file in the data recording area Position information of invalid data that is added and recorded but not used for searching volume and file structure information is managed in the file structure, and multiple recorded volumes are effective to improve the reliability of recorded data. ♦ Information recording medium having a file structure, information recording / reproducing method using this information recording medium, and information The present invention relates to recording and reproducing apparatus. Background art

In recent years, various forms of media have been used for recording digital data, and among them, CD-R discs are rapidly spreading as inexpensive recordable optical discs. A multi-session method is well known as a method for additionally writing data to the CD-R disc. A data recording operation using the multi-session method will be described below with reference to the drawings.

FIG. 8 is a data structure diagram of a CD-R disc on which files managed by a volume file structure defined by the ISO 9660 standard using a multi-session method are recorded. In the multi-session method, files and the volume and file structure information that manages the files are added in session units. Each session is composed of a lead-in area, a finger-link area, a user area, and a read-out area. Note that only the first session has no lead-in area. Further, an outer link area is formed between sessions. In data recording in session units, the file and volume file structure information for managing the file are first recorded in the user area. Next, the readout area is recorded. This lead-out area makes it easy to reproduce data in a CD-ROM drive that does not have the ability to detect the position from the data unrecorded area on the disc because the wobble address formed on the CD-R disc cannot be detected. Recorded to help. Then, data having the address information of the succeeding session and the user area is recorded in the lead-in area. In recording in the user area lead-in area lead-out area, a run-in block and a run-out block are added before and after each area, respectively. Since the run-in block and run-out block are partially overwritten on the disk, the overwritten area is called a link block. Therefore, between the lead-in area and the user area or between the user area and the lead-out area, an inner link area composed of a run-out block, a link block, and a run-in block is provided, and the lead-out area is re-bound. An outer link area having a similar configuration is formed between the area and the area.

FIG. 9 is a directory structure diagram for managing files recorded on a CD-R disc in association with the data structure diagram of FIG. In the directory structure shown in Fig. 9, a subdirectory (Dir-A) and a data file (Fi1e-b) that manage the data file (Fi1e-a) are stored under the root directory. A subdirectory (Dir-B) for managing the data directory (Dir-B) and a subdirectory (Dir-C) for managing the data file (Fi1e-c) are formed. Then, according to such a directory structure, the data file (Fi1e-a) is in the first session, the data file (Fi1e-b) is in the second session, and the data file (Fi). When 1 e-c) are sequentially recorded in the third session, respectively, the data structure of FIG. 8 described above is formed on the CD-R disc.

FIG. 10 is a flowchart illustrating a recording operation for forming the data structure shown in FIG. 8 on a disk. The data recording operation of each session will be described below according to the processing steps shown in this flowchart.

(S1001) CD- When the R disc is inserted into the recording device, the Access the lead-in area assigned to a specific position on the inner circumference of the disk, and try to reproduce TOC data from the lead-in area. This TOC data is list information of data recorded on the information recording medium. And from the lead-in area

If the TOC: data is reproduced, execute the step (S1002) to retrieve the subsequent session data. On the other hand, if the data cannot be reproduced because the lead-in area is in the unrecorded state, the recording operation of the session data is executed according to the processing procedure after step (S1003).

(S 1002) When the TOC data is reproduced from the lead-in area, the read address reads the head address of the succeeding session included in the TOC data, and returns to step (S 1001) to continue. Attempt to play data from the lead-in area of the session.

(S1003) When a red-in area where data is not recorded is detected, a file to be recorded as session data and volume file structure information for managing the file are generated as follows. First, when data is not reproduced from the lead-in area, a data file (Fi1ea) recorded as data of the first session, a subdirectory (Dir-A) for managing the data file, and a root directory are managed. It generates directory files, basic volume descriptors, and path tables as volume and file structure information for managing these files and directory files in accordance with the ISO 9660 standard. On the other hand, when the TOC data in the lead-in area is reproduced, the volume file structure 5 if-information and the directory file are used by using the head address of the user area included in the last-read TOC data. Is read. For example, the information is read from the user area 802 on the disk where only the first session is recorded, and from the user area 805 on the disk where the second session is recorded. Then, the content of the volume / file structure information is updated by changing the file newly recorded in the read data and the directory file for managing the file. For example, the user area of the disc where only the first session was recorded

The data read out includes a data file (Fi1 eb) and a directory file (Dir-B) of a subdirectory that manages the data file. The data read from the user area 805 of the disc recorded up to the session includes the data file (Fi1e-c) and the directory file of the subdirectory that manages it (Dir-C). Are added to each other to create a new poem file structure.

(S1004) When the volume file structure to be recorded in the user area is generated, the read-out area and the run-out block having a predetermined recording capacity are skipped, and the step (S104) is performed. The recording data to which the predetermined link block / run-in block and link block // run-out block are added before and after the recording data generated in 03) are continuously recorded.

(S105) When data recording in the user area is completed, a predetermined link block / run block and link block / runout block are added before and after the recording data in the readout area. The generated recording data is generated. Then, the recording data generated from the link block following the run-out block recorded in the step (S1004) is continuously recorded. By such a recording operation, for example, in the recording operation of the first session, the lead-out area 803 and the run-in block Z link block and the run-out block no-link block located before and after it are recorded. In the recording operation of the second session, the read-out area 806 and the run-in block Z link block and the run-out block / link book located before and after the read-out area 806 are respectively recorded.

(S106) When the data recording in the readout area is completed, the head address of the succeeding session is calculated in consideration of a predetermined amount of recording in the outlink area. The calculated start address of the subsequent session is embedded in the TOC data recorded in the lead-in area together with the start address of the user area recorded in step (S1004). Then, recording data to which a predetermined link block No-run block and a link block / run-out block are added before and after the recording data in the lead-in area are generated. In the recording of the first session, from the specific position on the inner circumference of the disk, and in the recording of the second session to the third session, from the link blog following the run-out block recorded in step (1005), respectively. Generated recording data is recorded continuously _c This recording data is recorded continuously. By such a recording operation, for example, in the recording operation of the first session, the run-in block / "link block located immediately after the innermost lead-in area 811, and the second block are recorded. In the session recording operation, the lead-in area 804 and the run-in / link block and the run-out block located before and after the lead-in area 804 are respectively recorded, and the data recording operation is completed.

By the data recording operation described above, a data structure of the manoretic session method as shown in FIG. 8 is formed on the disc. In the data structure shown in FIG. 8, the logical sector number (LSN) is set to 0 as the first sector of the user area in the first session, and consecutive ascending logical sector numbers are assigned to subsequent sectors. The volume space is defined as an area starting from the sector of LSN0.

Next, the operation of reproducing the data file (Fi1e-a) from the first session of the disk having the data structure shown in Fig. 8 will be described below with reference to Figs. 8 and 10. I do.

When the CD-R disc is inserted into the playback device, the playback device follows the processing procedure from step (S1001) to step (S1003) shown in the flowchart of FIG. Reads the volume and file structure information 820 from the user area of the third session. In the case of a computer system to which a CD-ROM drive is connected, the host computer issues a READ TOC command to start the address of the user area in the third session where the latest volume and file structure information is recorded. To get. Then, the logical sector number of the sector in which the latest volume / file structure information is recorded is calculated from the start address, and this structure information is read from the disk.

Next, when the latest volume 'file structure information 820 is read, the basic volume descriptor 821, paste table 822, root directory 822, and data file (data file) contained therein are read. The structure information is interpreted in accordance with the IS09660 standard using a directory refiner (Dir-A) 824 that manages F i 1 e—a) 8 25. Then, from the directory record of the data file (F i 1 e -a) 8 25 contained in the directory file (D ir -A) 8 24 The recording position of the data file is read.

Finally, the data file (Fi 1 e-a) 825 recorded in the user area of the first session is reproduced according to the recording position of the read data file. Disclosure of the invention

(The technical

However, in the information recording medium recorded by the multi-session method as described above, a data file recorded on the medium, a file management information for managing the data file, an unrecorded area in the medium, etc. To retrieve the TOC data, the TOC data recorded in the lead-in area inside and outside the

It had to be read using a special command such as the C command.

Also, the lead-in area, read-out area, inner link area, and downlink area are recorded in the volume space as invalid areas that cannot be used for searching the volume file structure or recording data files. However, since these areas were not managed using the volume and file structure, the volume space was managed as a discontinuous gun with partially inaccessible areas. Therefore, in the case of an information recording medium in which the same area can be rewritten a certain number of times or more, the read-out area, read-in area, inner link area, and data link area having a large capacity of several MB or more are used to record the file. ^! ! It was difficult to use them effectively.

The present invention solves the above-mentioned problem, and enables data files recorded in an X medium using only a volume file structure to be recorded / reproduced for file management information for managing the data files and to search for an unrecorded area. Along with, in the Boryum space question! (2) An object of the present invention is to provide an information recording medium capable of reusing various invalid data areas. At the same time, an object of the present invention is to provide an information recording medium that realizes a highly reliable file structure by multiplex-recording file management information.

(How to solve it) In order to achieve the above object, the present invention provides an information recording medium in which a file managed using a volume / file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording medium characterized in that head position information of an existing unrecorded area is recorded in a volume space as a part of management information of a root directory file.

In order to achieve the above object, the present invention provides an information recording medium in which a file managed using a volume file structure is recorded / reproduced and the number of times of recording data in the same area is limited. Invalid data that is not used for the search of the file structure information is recorded in addition to the volume / file structure report and the data file before and after the data file. An information recording medium characterized by being recorded in a volume space as part of management information.

In order to achieve the above object, the present invention provides an information recording medium in which a file managed using a volume 'file structure is recorded / reproduced and the number of times of recording data in the same area is limited. The management information of the root directory file is multiplexed and recorded as main chain type information and spare chain type information, and the position information of the area where the main chain type information and the spare chain type information recorded at the head of the volume space are recorded in the final file. Information that is recorded as part of the main descriptor and that the position information of the area where the chain type information and the preliminary chain type information are updated is recorded as part of the main chain type information and the preliminary chain type information. It is a recording medium.

Further, in order to achieve the above object, the present invention provides a format for an information recording medium in which a file managed using a volume / file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording method for executing a process, comprising: a chain-type information recording step of recording information on a head position of an unrecorded area existing in a volume space as a part of management information of a root directory file. This is an information recording method.

Further, in order to achieve the above object, the present invention provides a format for an information recording medium in which a file managed using a volume file structure is recorded and reproduced and the number of times of recording data in the same area is limited. Information record to execute processing In this method, invalid data that is not used for searching the volume and file structure information is added and recorded before and after the volume and file structure information and the data file, and invalid extent management information that manages the invalid data storage is stored in the root directory. An information recording method characterized by comprising a chain information recording step of recording as part of file management information.

In order to achieve the above object, the present invention provides a format for an information recording medium in which a file managed using a volume 'file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording method for performing processing, which is a file set in which main chain type information and spare chain type information recorded at the beginning of the volume space are recorded, and the position information of the area is recorded as a part of the file set descriptor. An information recording step, and a chain-type information record for multiplex-recording main chain-type information and preliminary chain-type information having management information of the root directory file, chain-type information, and position information of an area in which the preliminary chain-type information is updated and recorded. This is an information recording method that includes steps.

In order to achieve the above object, the present invention provides a format for an information recording medium in which a file managed using a volume file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording apparatus for performing processing, characterized in that it has a chain-type information recording means for recording information on a head position of an unrecorded area existing in a volume space as a part of management information of a root directory file. It is an information recording device.

Further, in order to achieve the above object, the present invention provides a format for an information recording medium in which a file managed using a volume / file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording device that executes processing, which records invalid data that is not used for searching volume and file structure information before and after the file and file structure information and data files, and manages the invalid data recording area. An information recording apparatus characterized by comprising chain information recording means for recording invalid extent management information to be performed as a part of the management information of a root directory file.

Further, the present invention uses a volume file structure to achieve the above object. An information recording device that performs format processing on an information recording medium on which the number of times of data recording on the same area is limited while recording / reproducing files that are managed and recorded at the beginning of the volume space A file information recording means for recording the position information of the area where the main chain type information and the spare chain type information are recorded as a part of the file combination descriptor, management information of the root directory file, the main chain type information and the spare An information recording apparatus comprising: chain-type information having position information of an area where chain-type information is updated and recorded; and chain-type information recording means for multiplex-recording preliminary chain-type information.

Further, in order to achieve the above object, the present invention provides a file recording method for an information recording medium in which a file managed using a volume file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording method for performing a recording process, comprising: a chain information recording step of recording information on a start position of an unrecorded area existing in a volume space as a part of management information of a root directory file. This is the information recording method.

In order to achieve the above object, the present invention relates to an information recording medium in which a file managed using a volume / final structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording method for performing file recording processing, in which invalid data that is not used for retrieval of volume and file structure information is added and recorded before and after the volume and file structure information and data file, and invalid data is recorded. This is an information recording method that includes a chain-type information recording step of recording invalid entity management information for managing the information as part of the management information of the root directory file.

Further, in order to achieve the above object, the present invention provides a method for recording / reproducing a file managed by using a volume / file structure and a method for recording a file on an information recording medium in which the number of times of recording data in the same area is limited. An information recording method for performing a recording process, wherein a file set descriptor is used to reproduce the position information of an area where a chain type information and a preliminary chain type information recorded at the head in a volume space are recorded. An information reproducing step, and using the main chain type information or the preliminary chain type information, the subsequent main chain type information or the preliminary chain type information, or the root directory A chain type information recording step of reproducing management information; and main chain type information and spare chain type information having management information of the root directory file, main chain type information, and position information of an area where the spare chain type information is updated and recorded. And a chain-type information recording step of multiplex recording.

Further, in order to achieve the above object, the present invention provides a method for recording and reproducing a file managed using a volume 'file structure' and a file recording method for an information recording medium in which the number of times of recording data in the same area is limited. An information recording apparatus for performing a recording process, comprising: a chain-type information recording means for recording information on a head position of an unrecorded area existing in a volume space as a part of management information of a root directory file. This is an information recording device.

Further, in order to achieve the above object, the present invention provides a method for recording / reproducing a file managed using a volume 'file structure, and a method for recording a file on an information recording medium in which the number of times of recording data in the same area is limited. An information recording device that performs recording processing, records invalid data that is not used for volume 3 file information retrieval before and after the volume / file structure information data file, and manages invalid data recording and area. An information recording apparatus characterized by comprising chain information recording means for recording invalid extent management information as a part of the management information of a root directory file.

According to another aspect of the present invention, there is provided an information recording medium in which a file managed using a volume / file structure is recorded / reproduced and the number of times of recording data in the same area is limited. An information recording device that performs file recording processing on i-chain-type information and preliminary chain-type information recorded at the beginning of the volume space using a fino combination descriptor.s Position information of the recorded area And a chain type for reproducing the main chain type information or the management information of the root directory file using the main chain type information using the {3} chain type information or the preliminary chain type information. Main chain type information and spare having information recording means, management information of the root directory file, main chain type information and position information of the area where the spare chain type information is updated and recorded The chain information is information storage location that was Ki敫 further comprising a linkage information recording means for multiplexing recording. Further, in order to achieve the above object, the present invention executes a file reproduction process from an information recording medium in which a file managed using a volume file structure is recorded and the number of times of recording data in the same area is limited. An information reproducing method, comprising: reproducing a position information of a main chain type information and a preliminary chain type information recorded at the head in a volume space using a Fino merge descriptor; A chained information recording step of reproducing the subsequent main chained information or spare chained information, or management information of the root directory file using the main chained information or spare chained information. This is a playback recording method. .

Further, in order to achieve the above object, the present invention executes a file reproduction process from an information recording medium in which a file managed using a volume file structure is recorded and the number of times of recording data in the same area is limited. An information reproducing apparatus for reproducing position information of an area in which ^ chain type information and preliminary chain type information are recorded at the head of the volume space 用い using a fino joint descriptor; Chain information recording means for reproducing the subsequent main chain information or spare chain information or management information of the root directory file using the main chain information or the spare chain information. Brief description of the drawings

FIG. 1 is a data structure diagram showing an area structure in an embodiment of the information recording medium of the present invention.

FIG. 2 is a block diagram showing a configuration in an embodiment of the information recording / reproducing apparatus of the present invention.

FIG. 3 is a flowchart illustrating a format processing procedure by the information recording / reproducing apparatus of the present invention.

FIG. 4 is a data structure diagram of the information recording medium on which the format processing has been performed.

FIG. 5 is a flowchart illustrating a file recording process performed by the information recording / reproducing apparatus of the present invention.

FIG. 6 is a data structure diagram of an information recording medium on which file recording processing has been performed. FIG. 7 is a flowchart illustrating a file playback processing procedure performed by the information recording / playback apparatus of the present invention.

Fig. 8 shows the data structure of a CD-R disc recorded by the conventional multi-session method.

Figure 9 shows the directory structure for managing files on the disk.

FIG. 10 is a flowchart of a data recording operation by the multi-session method. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, the area configuration of the information recording medium shown in FIG. 1 and the block configuration of the information recording / reproducing apparatus shown in FIG. 2 will be described. Next, the format processing procedure for the information recording medium shown in FIG. 3 and the file recording procedure shown in FIG. 5 will be described, and then a detailed data structure which is a feature of the information recording medium of the present invention will be described. . Finally, a file reproducing procedure for the information recording medium shown in FIG. 7 will be described.

As an embodiment of the present invention, a volume defined by the ISO 1334 6 standard using an information recording medium such as a CD-R disc or a CD-RW disc, in which the number of times of recording data in the same area is limited. An information recording medium for recording a file managed by a file structure, an information recording / reproducing method and an information recording / reproducing apparatus using the information recording medium will be described below with reference to the drawings. In the following description, various descriptors, pointers, and the like recorded on the information recording medium as a volume file structure have a data structure conforming to the ISOI 336 standard unless otherwise specified. Shall be.

FIG. 1 is a data structure diagram showing an area configuration of an information recording medium according to one embodiment of the present invention. In FIG. 1, a data recording area starts from a lead-in area 101 and a volume space is formed across a link area 102. In the format processing, a main volume structure 103 in which volume structure information is recorded in the volume space, a starting point information region 104, and a spare volume structure 3t¾H in which copy information of volume structure information is recorded. An area 105 and a start point information area 106 are formed. Next, the file descriptor which is a feature of the present invention is recorded. The main chain type information area 110 in which the management information of the root directory file including the chain type information, which is also a feature of the present invention, and the copy information of the main chain type information are combined. A spare chain information area 1 1 1 to be recorded and a file structure area 1 1 3 including a root directory file are formed with the link extent 107, the link extent 1 09, and the link extent 1 1 2 interposed. A part of the overrun extent 1 16 including the start point information area 1 15 and the overrun block is formed across the link extent 1 14. The detailed structure of the overrun extent will be described later.

Next, by sequentially recording the data file (File-a) and the data file (Fi1e-b) based on the directory structure shown in Fig. 9, the chained information whose recorded contents have been updated is recorded. The main chain type information area 1 17 and the spare chain type information area 1 18 which are used, the file structure including the data file (File-a), the 7-file area 120, and the data file (F A file structure including i 1 e-b) Z-fi / HI region 122 is formed with link extent 119 and link extent 122 interposed therebetween. Next, a part of the start point information area 124 and the overrun extent 125 is formed with the link extent 123 interposed therebetween.

Further, by additionally recording a data file (File-c) based on the directory structure shown in FIG. 9, the chained information whose recorded content is updated is recorded. A type information area 127 and a file structure file area 127 including a data file (Fi 1 e-c) are formed with a link expert 128 interposed therebetween. Next, a part of the start point information area 131 and a part of the overrun extent 132 are formed with the link extent 130 interposed therebetween. Although the outline of the data structure of the information recording medium shown in FIG. 1 has been described here, a more detailed data structure including a data recording procedure will be described later.

FIG. 2 is a block diagram of an information recording / reproducing apparatus according to one embodiment of the present invention. Figure

As shown in FIG. 2, the information recording / reproducing apparatus includes a system control unit 201, a memory circuit 202, a 10 path 203, a magnetic disk device 204, and an optical disk drive 205. Consists of The system control unit 201 is realized by a microprocessor including a control program and an operation memory, and records a volume structure report. Reuse structure recording means 2 1 1, polyme structure reproduction means 2 1 2 for reproducing volume structure information, file set information recording means 2 1 3 for recording file set information, and fino combined information reproduction for reproducing fino combined information Means 2 14, file structure recording means 2 15 for recording file structure information, file structure reproducing means 2 16 for reproducing file structure information, and file recording means 2 17 for recording file data. File reproducing means 218 for reproducing file data, chain information recording means 219 for recording chain information, chain information reproducing means 220 for reproducing chain information, and data in the lead-in area. And a run-in block recording means for recording an overrun block and a start volume descriptor pointer. It is characterized by a door. The memory circuit 202 is composed of a memory for polymorph structure 231, which is used for storing volume structure information, a memory for file structure 23, which is used for storing file structure information, and a Memory for final set information used for information and temporary storage, memory for chained information used for temporary storage of chained information, and memory for file used for temporary storage of data files. And an overrun block memory 236 used for temporarily storing data recorded in the start volume descriptor pointer and the overrun extent.

Next, for the format processing procedure for the information recording medium of the present invention, refer to the block diagram shown in FIG. 2, the flowchart explaining the format processing procedure in FIG. 3, and the data structure diagram after the format processing shown in FIG. This will be described below.

(S301) Upon detecting that a disk has been inserted into the optical disk drive device 205, the system control unit 201 executes a control program incorporated as a lead-in recording unit | Then, the optical disk drive 205 is instructed to record the read-in area. The optical disk drive device 205 accesses a specific position on the inner periphery of the disk, and immediately after the recording data in the predetermined lead-in area 101, a run-out block having predetermined recording data and recording capacity. And a link block. When the data recording operation for the lead-in area 101 and the link area 102 ends, the optical disc drive 205 completes the recording operation. To the system control unit 201.

(S302) The system control unit 201 is duplicated recorded in the main volume structure area 103 and the spare volume area 105 according to the control program built in as the volume structure recording means 211. NSR descriptor 401, basic volume descriptor 402, processing system volume descriptor 403, partition descriptor 404, logical volume descriptor 405, unallocated empty description A volume descriptor string consisting of a child 406, end descriptor 407, logical volume integrity descriptor 408, etc., and two filB records in the start point information areas 104 and 106, respectively. The created start volume descriptor pointers 409 and 410 are created in the volume structure memory 231 of the memory circuit 202 in accordance with the order of the data structure shown in FIG. The start volume descriptor pointers 409 and 410 include the address information of the main volume structure area and the spare volume structure area 5, and the start point information area 1004 where these are recorded. And 106 are assigned to fixed positions in the volume space.

Further, the system control unit 201 instructs the optical disk drive device 205 to record the volume structure information created in the volume structure memory 231, according to the control program. The optical disk drive device 205 records data to which a predetermined link block no-run-in block and a run-out block Z link block are added before and after the volume structure information transferred from the volume structure memory 2 31. Is generated inside the system control unit 201, and is continuously recorded from the link block of the link area 102. At this time, since the recording operation of the lead-in area and the recording operation of this volume structure information overlap on the link block, the data is almost double recorded in at least a part of the link block. Such a data recording method sandwiching the link area is executed by a control procedure similar to that of the conventional example. When the recording operation of the volume structure report ends, the optical disk drive device 205 notifies the system control unit 201 of the completion of the recording operation.

(S303) The system control unit 201 stores the file set information including one or more continuous file descriptors 141 in accordance with a program stored as the file combination information recording means 211. It is created in the set information memory 2 3 3. this The file set descriptor 14 1 is composed of the main chain information area 110 and the spare chain information area 1 11 1 where the file entries 14 2 and 14 4 of the root directory recorded first are respectively recorded. Address information.

Further, the system control unit 201 designates the recording operation of the file set information created in the phono information memory 233 in the optical disk drive 205 according to the control program. The optical disk drive device 205, like the recording operation of the volume structure information, includes a predetermined link opening and a rec / run before and after the file combination information from the file set information memory 233. The recording data to which the link block and the run block are added respectively is generated by a part of the system control unit 201, and is continuously recorded from the link block of the link extent 107. When the recording operation of the file set information is completed, the optical disk drive device 205 notifies the system control unit 201 of the completion of the recording operation.

(S304) The system control unit 201 stores the root directory file, which is the file structure information, according to the control program built in as the file structure recording means 215. 3 Create in 2.

Further, the system control unit 201 instructs the optical disk drive 205 to record the file structure information created in the file structure memory 232 in accordance with the control program. In this recording operation instruction, the system control unit 201 sets a fixed-length main chain information area allocated between the previously recorded file information area 108 and the file area 113. The file structure area 1 1 in which the root directory file 1 4 6 is recorded in consideration of the storage of the 1 1 0 and spare chain information area 1 1 1 and the fixed-length link extents 1 0 9 and 1 1 2 Specify the first address of 3. The optical disk drive 205, as well as the recording operation of the volume structure information, includes a predetermined link block, a run-in block, and a run-out block before and after the file structure information from the file structure memory 232. (4) The recording data to which the link block is added is generated inside the system control unit 201, and is recorded continuously from the link block of the link extent 112. When the recording operation of the file structure information is completed, the optical disk drive device 205 notifies the system control unit 201 of the completion of the recording operation. (S305) The system control unit 210, according to the control program built as the overrun block recording means 222, addresses information of the main volume structure area 103 and the spare volume structure area 105. The recording data for the starting volume descriptor pointer 411 and the overrun block following this is created in the overrun block memory 236.

Further, the system control unit 201 sends the start volume descriptor pointer 4 11 1 created in the overrun block memory 2 36 to the optical disk drive 205 in accordance with this control program and the overrun Instruct record of block. The optical disk drive 205 records the start pointer descriptor 411 transferred from the overrun block memory 2316 and the subsequent overlamp lock in the same manner as the recording operation of the volume structure information. Before and after the data, a predetermined link block, a run block and a link block, respectively, are generated inside the system control unit 201 to generate recording data to which the link block is added, and the link block of the link extent tent 114 is generated from the link block. Record continuously. When the recording operation of the start volume descriptor pointer 411 and the subsequent overrun block is completed, the optical disk drive device 205 notifies the system control unit 201 of the completion of the recording work.

(S306) Finally, the system control unit 201 stores the chained information in the memory circuit 202 in the chained information memory 23 according to the control program incorporated as the chained information recording means 219. Create in 4. This chain type information is information for managing the root directory file using the ICB (Information Control Block) defined in the ISO 13346 standard, and includes the main chain type information area 110 and the spare chain type information. It consists of the file entries 144 and 144 of the root directory recorded in the area 111, and the indirect entries 144 and 144. The indirect entries 144 and 145 of the chained information include the head address information of the unrecorded area in the volume space used for the update recording of the new chained information, and the final entry. 1442 and 1444 include position information of an invalid extent which is an area in which invalid data, such as an overrun extent and a link estate, which is not used for retrieval of volume / file structure information is recorded. The detailed data structure of the chain information will be described later. Further, the system control unit 201 instructs the optical disk drive device 205 to perform an operation of recording the chain information created in the chain information memory 234 according to the control program. In the instruction of this recording operation, the system control unit 201 considers the recording position of the FINO I information area 108 and the recording capacity of the link extent 109 that is a fixed length, and considers the main chain information area. Specify the first address of 1 1 0. The optical disk drive device 205, like the recording operation of the volume structure information, includes a predetermined link block before and after the main chain type information and the spare chain type information from the chain type information memory 234. The recording data to which the no-run-in block and the link block are respectively added is generated inside the system control unit 201, and is continuously recorded from the link block of the link extent 109. When the recording operation of the chain type information is completed, the optical disk drive device 205 notifies the system controller 201 of the completion of the recording operation. When the format processing procedure as described above is executed, a data structure as shown in FIG. 4 is formed on the information recording medium. The arrows to which S301 to S306 are added in FIG. 4 indicate the areas recorded in the respective steps in FIG. Also, the overrun block recorded in step (S305) is the same as the lead-out area described in the conventional example, and the disc playback apparatus has no position detection capability from the data unrecorded ^ g area. This is an area recorded to prevent occurrence of overrun in the unrecorded ^ g area when accessing 1 13 or the start point information area 1 15 etc.

In the format processing procedure described above, the read-in area 101 and the volume structure (103, 104, 105, 100) are executed in accordance with the processing procedure for each command by the computer system. 6), the file information area 108, the chain information area (110, 111), the file area 113, the start point information area 115, and the overrun following it. Extents 1 and 16 have been described as being recorded separately and independently. However, in the case of dedicated equipment that does not depend on the architecture of the computer system, it is possible to execute all or part of these formatting procedures continuously. For example, lead-in Area 101, volume structure 5tlS area (103, 104, 105, 106), fire information area 108, chain information area (110, 111), file area 113, and start point information area 115 In the simplified format processing in which the recording operation of the overrun statement 116 is performed continuously, the link area 102, the link extents 107, 109, 112, and 1 shown in FIG.

14 does not exist.

In this embodiment, the volume structure information is mis-recorded in the main volume structure 103 and the spare volume structure 105, and the chain information is mis-recorded in the main chain information region 110 and the spare chain information region 111. The combined descriptor is multiplex-recorded in the final combined information area 108. For information media such as DVD discs where the ECC block, which is the unit of error correction, consists of multiple sectors, multiple mis-recording over multiple Ecc blocks improves data reliability. Is important. For example, the spare volume structure area 105 and the start point information area 1 and 6 are recorded in an ECC block different from the ECC block in which the main volume structure it area 103 and the start point information area 104 are recorded. In such a recording operation, padding data is recorded appropriately so that the space between the start point information area 104 and the spare volume structure area 105 coincides with the boundary of the ECC block. Next, according to the control procedure of the file recording process on the information recording medium of the present invention, the block diagram shown in FIG. 2, the data structure diagram after the format process shown in FIG. This will be described below with reference to a flowchart for explaining the processing procedure and a data structure diagram after file recording shown in FIG. In the file recording process, the data file (Fi 1 ea) and the data file (Fi 1 e-b) to be recorded are transferred from the magnetic disk device 204 to the file memory 235 in advance. The following description will be made assuming that the information is individually recorded according to the directory structure shown in FIG.

(S501) The system control unit 201 reads the start volume descriptor pointer 409 recorded in the start point information area 10 having a specific logical sector number in accordance with the control program stored as the volume structure reproducing means 212. Playback operation Instruct the disk drive device 205. The optical disk drive 205 accesses a designated area of the mounted disk (not shown), reads the start volume descriptor pointer 409, and reads the volume structure memory 2 3 of the memory circuit 202. Transfer to 1. When the start volume descriptor pointer 409 cannot be reproduced, the reproduction operation of the start pointer descriptor 410 recorded in the start point information area 106 having a specific logical sector number is executed. .

Next, the system control unit 201 reads the starting volume descriptor pointer

By interpreting the position information of the main polygon structure area 103 included in 409, the data reproducing operation from the main polygon structure area 103 is instructed to the optical disk drive 205. The optical disk drive device 205 accesses the designated area and returns N

5 In order from R descriptor 401, basic volume descriptor 402, processing system polygon descriptor 403, area descriptor 404, logical volume descriptor 405, unallocated space description The child 406, the termination descriptor 407, and the logical volume integrity descriptor 408 are read, and are read into the volume structure memory 231 of the memory circuit 202. When information cannot be reproduced from the main volume structure area 103, the spare volume structure M area 105 included in the start volume descriptor pointer 409 is used to determine the spare volume. A reproduction operation of the poly-me structure information from the area 105 is executed.

Further, the system control unit 201 interprets the read volume structure information, and acquires the address information of the final combination information area 108 in which the file combination descriptor 141 is recorded.

(S502) The system control unit 201 is recorded in the file information area 108 in the same manner as the read operation of the volume structure, according to the control program built in as the phono information reproduction means 214. Ta Fino! The reproduction operation of the combined descriptor 14 1 is instructed to the optical disk drive device 205. The optical disk drive 205 accesses the designated area, reads the file descriptor 141, and stores it in the file set information memory 233.

Next, the system control unit 201 performs the read-out combination descriptor 141 to read the address information of the main chain information area 110 and the spare chain information area 111. get. The detailed data structure of this file descriptor will be described later.

(S503) The system control unit 201 executes the step (S502) or the later-described step (S504) in accordance with the control program incorporated as the chain information reproducing means 220. Using the address information obtained in the step (2), the reproduction operation of the chain type information is instructed from the subsequent main chain type information area. The optical disk drive 205 attempts a data reproducing operation from the designated main chain information area. Then, when data is reproduced from the designated main chain information area, the optical disk drive device 205 stores the reproduced chain information in the chain information memory 234! I do. Then, the system control unit 201 executes step (S504) to search for the updated chain information. Note that when normal data reproduction operation is not performed due to an ECC error or the like even though data is recorded in the main chain information area, the system control unit 201 uses the previously acquired address information. Then, an instruction for reproducing the chained information from the subsequent spare chained information area is issued. When data is reproduced from the designated spare chain information area, the optical disk drive device 205 transfers the reproduced chain information to the chain information memory 234.

If the data playback operation cannot be performed because the designated main chain information area and spare chain area are unrecorded, the last played back information is determined to be the latest chain information. Step (S505) and subsequent steps are executed. For example, as shown in FIG. 4, in an information recording medium in which only the format processing has been performed, the information read from the main chain information area 110 or the spare chain information area 111 is the latest chain information. This is the type information, and the file entry 144 or 144 included in it is used in the following processing procedure as the one for managing the root directory file. As shown in FIG. 6, in the information recording medium in a state after file recording, information read from the main chain information area 117 or the spare chain information area 118 is the latest chain information. Yes, the file directory 147 or 149 included in it is used in the following procedure to manage the root directory file.

(S504) The system control unit 201 is included in the chain information read in step (S503) in accordance with the control program incorporated as the chain information reproducing means 220. Address of the subsequent linked information area Get information. For example, as shown in FIG. 6, in an information recording medium in a state after recording a file, indirect information included in the chained information read from the main chained information area 117 or the spare chained information area 118 is used. The address information of the subsequent unlinked status information area is obtained from the data entry 148 or 150. The detailed data structure of this direct entry will be described later.

(S505) The system control unit 201 executes the file entry included in the chain type information read out in step (S503) in accordance with the control program built in as the finale structure reproducing means 211. From the address information of the area where the root directory file is recorded. For example, in an information recording medium in which only the format processing has been performed as shown in FIG. Or, the address information of the root directory file 144 is obtained from the file entry 144 or 144 read from the spare chain information area 111. Also, as shown in FIG. 6, in the information recording medium in a state after recording the file, the file entry read from the main chain information area 117 or the spare chain information area 118 or the file entry 147 or 1 From 49, the address information of the root directory file 160 is obtained.

Next, the system control unit 201 uses the obtained address information to transfer the root directory file 144 or the root directory file 160 from the file structure i S area 113 or the file structure Z file area 122. Of the playback operation. The optical disk drive 205 reads the latest root directory refinement from the designated area and transfers it to the file structure memory 232. For example, as shown in FIG. 4, in the information recording medium in which only the format processing has been performed, the root directory file 146 recorded in the file structure area 113 is read. In addition, as shown in FIG. 6, in the information recording medium in a state after file recording, the root directory refresh file 160 recorded in the file structure Z file area 122 is read. When the reproduction operation of the root directory file is completed, the optical disk drive device 205 notifies the system control unit 201 of the completion of the reproduction operation of the root directory file.

(S506) System control unit 201 is built in as file structure recording means 215 According to the control program, a directory file (Dir—A) 15 3 that manages the data files (F i 1 e—a) 15 1 and a file entry (File—a) that manages these files ) 15 2 and a file entry (D ir—A) 15 4 are generated, and the contents of the root directory file read out to the file structure memory 2 32 in step (S 505) are updated. You. Then, the directory file @ finalet entry is stored in the memory for file structure 232, and the data file (Fi1e-a) which has been transferred from the magnetic disk device 204 to the file memory 235 in advance. In the stored state, the system control unit 201 performs the recording operation of these data according to the control programs incorporated as the file structure recording means 2 15 and the file recording means 2 17 according to the optical disk drive. Instruct device 205.

In this recording operation instruction, the system control unit 201 sends a fixed-length main link type information allocated between the overrun extent 116 and the file structure / Fuino ^ S area 120. The data file, file structure information, and the start address of the area are specified in consideration of the area 1 17 and the spare chain information area 1 18 and the storage of the fixed-length link extent. The optical disk drive 205 has a data file (Fi i e-a) sent from the file memory 230 and a data file (File-a) transferred from the file structure memory 230. The system control unit sends the record data to which a predetermined link block No run-in block and a run-out block Z link block are added before and after the file information such as directory files and file entries to be recorded. Generated inside 201 and recorded continuously from the link block of link extent 119. When the data recording operation to the Z-structure area 120 is completed, the optical disk drive 205 notifies the system controller 201 of the completion of the recording operation. Due to the data recording operation described above, the file structure ΖFiino ^ area 120 contains the data file (File-a) 151, the file entry 152 that manages it, and the directory as shown in FIG. The file (Dir-A) 15 3, the file entry 15 4 that manages it, and the updated root directory file 15 5 are formed. (S507) In order to additionally record a new data file (Fi1e-b), the system control unit 201 previously stores data from the magnetic disk device 204 into the file memory 235 in accordance with the same control procedure as in step (S506). The transferred data file (Fi 1 eb) 156 and the file structure information for managing the data file are recorded in the file structure Z file area 122. When this file recording operation is completed, a data file (Fi 1 eb) 156, a file entry 157 for managing the data file 157, and a directory file (D ir- B) 158, a file entry 159 for managing it, and a root directory file 160 updated again are formed.

(S508) The system control unit 201 determines the recording operation to the start point information area 124 and the overrun stent 125 in the format processing step (S3

Execute according to the same procedure as 05).

(S509) The system control unit 201 sets the recording operation of the chained information in the main chained information area 117 and the spare chained information area 118 in the same procedure as the format processing step (S306) described above. Therefore, execute and complete the file recording operation. When the file recording process procedure as described is performed in more than ^1, the data structure shown in FIG. 6 is formed on the information recording medium. The arrows to which S506 to S509 are added in FIG. 6 indicate the areas recorded in each step of FIG. The overrun block recorded in step (S508) is, as in the readout area described in the conventional example, a disk reproducing apparatus having no position detection capability from the data non-recording area, and has a file structure no-fino area. This is an area that is recorded in order to prevent occurrence of an overrun in an unrecorded area when accessing the or the start point information area 124 or the like.

In step (S 506) and step (S 507), the description has been made assuming that the data file directory file and the file entry for managing the data file are collectively recorded. However, individual files and file entries are individually recorded. It may be. In such an individual record, the file is Since the link block and the link block are recorded separately, a link extent is formed between files and file entries. In addition, the data files and directory files recorded in the file area 120 and 122 and the recording location of the file entry that manages them are logically managed by the file structure information. Therefore, the recording order of the data file / directory file and the file entry that manages them is not limited as shown in the data structure diagram of FIG.

In addition, for the information recording medium having the data structure as shown in FIG. 6, the directory structure shown in FIG. 9 is described according to the same procedure as the file recording operation shown in the flowchart of FIG. When a data file (Fi1e-c) is newly recorded, a data structure as shown in FIG. 1 is formed on the information recording medium. Next, a detailed data structure of the file set descriptor 1441, which is a feature of the present invention, will be described below with reference to FIG.

The Phino V * descriptor is information for managing a set of files recorded in the volume space. This descriptor has an area where the ICB of the note directory file recorded in the format processing is recorded. In the conventional file descriptor, the address information of one ICB that manages the root directory is recorded, but the step (S303) in the format processing procedure of FIG. ) Is a chain type information area 1 in which the file entries 144 and 144 that manage the root directory file 144 recorded in the format processing are recorded respectively. It holds the address information of 1 0 and the spare chain information area 1 1 1. The specific data structure of the file descriptor is shown in FIG. As described in the file combination descriptor 11 recorded in 108, the descriptor tag 171, which identifies this descriptor as a file combination descriptor, the main chain information area and the spare chain It contains the length 172 of the type information area, the address information 173 of the main chain information area 110, and the address information 174 of the spare chain information area 111. In the file set information area 108, one or more continuous file set descriptors are recorded. In the case of an information recording medium such as a DVD disk, in which the ECC block, which is a length correction unit, is composed of multiple sectors, multiplex recording over multiple ECC blocks improves data reliability. It is important to make it happen. For example, by assigning two or more ECC blocks as the file set information area 108 and recording a large number of file set descriptors in this area, data reliability is improved. Next, a detailed data structure of the main chain type information and the preliminary chain type information which is a feature of the present invention will be described below with reference to FIG.

The main chain type information and the auxiliary chain type information are obtained by extending the function of the ICB of the root directory file using the ICB policy 409 specified in the ISOI 336 standard, as described above. And indirect entries. Then, the main chain type information and the preliminary chain type information are recorded in the step (S306) in the formal processing procedure in FIG. 3 and the step (S509) in the file recording procedure in FIG.

—In general, an indirect entry is information indicating another ICB, and the indirect entry in the present invention is extended to manage address information of main chain information and spare chain information updated at the time of file recording. I have. As a specific data structure of the indirect entry, the indirect entry 148 shown in FIG. 1 includes a descriptor tag 175 for identifying that this descriptor is an indirect entry, and a main chain. Includes the length 1 76 of the type information area and the spare chain information area, the address information 1 77 of the main chain information area 126, and the address information 1 78 of the spare chain information area 127. In. Also, the indirect entry 162 recorded in the main chain information area 126 is unrecorded with the new file record, and the main chain information and the spare chain information recorded in the area 133 are recorded. It contains the update information and address information (186, 187) indicating the area. In addition, the address information 186 of the update recording area of the main chain type information is simultaneously the head address of the unrecorded area 133. Is also interpreted as

The file entries included in the main chain type information and the preliminary chain type information are generally management information of the root directory. However, according to the file entry of the present invention, management information of invalid extents which are not used for searching volume / file structure information, such as overrun extent / link extent existing in the volume space, is also registered. Has been extended. As a specific data structure of the file entry, the file entry 161 shown in FIG. 1 shows a descriptor tag 179 for identifying that this descriptor is a file entry and address information. According to the assignment descriptor, the assignment descriptor 180 having the address information of the root directory file '165, the assignment descriptor 18 1 having the address information of the link extent 128, and the link extent 130 Allocation descriptors 18 2 having address information and allocation descriptors 18 3 having address information of overrun extent 13 2 are recorded.

In the above description, the file entry 16 1 includes the allocation descriptors for managing the link extents 1 28, 1 30, and the o ^ ランエエ 1 2 3 which are invalid extents. . These invalid stents are newly allocated in accordance with the recording operation of the data file (Fi1e-c), and are located after the main chain information area 126 in FIG. However, there is also a method of registering all link extents and overrun extents existing in the volume space as invalid extents in the file entry 161. In this embodiment, the invalid extent is managed as a part of the management information of the root directory file.However, a set of invalid extents is regarded as a special file and is managed in a normal file structure. Is also possible. According to the present invention, as described above, by managing invalid extents existing in the volume space using the file structure, for example, the same area such as a CD-RW disc can be managed a certain number of times or more. In the case of an information recording medium that can be rewritten, it is possible to perform additional recording and update recording of files using an overrun extent with a large capacity of several MB or more under the normal file system management. Become. With such functionality, large-sized invalid extents are effectively used, and efficient use of volume space becomes possible. For example, on an information recording medium having the data structure shown in FIG. 1, overrun extents 1 16, 1 2 5, and 1 3 2 recorded for the purpose of preventing unparun Is an area that has lost its functionality due to the recording of a new file. Therefore, since these areas are managed under the file structure, the overrun extent can be used as a new file storage area without losing any functionality. .

According to the present invention, as described above, the main chain type information and the auxiliary chain type information, which are obtained by extending the data structure of the fining description \ and extending the ICB for managing the root directory file, are newly introduced. The reliability of the management information of the root directory file, which is very important as a file structure, can be significantly improved. For example, in FIG. 1, the file set descriptor 14 1 has the address information of both the ^ S chain type information area 110 and the spare chain type information area 1 11 where the ICB of the root directory file is duplicated recorded. . If the 鎖 g chain type information area 110 is in a state where data cannot be reproduced due to scratches or dirt, etc. According to the address information 174, it becomes possible to reproduce the IC of the root directory refresh from the auxiliary chain information area 111. Similarly, the indirect entries 1488 and 150 recorded in the main chain information area 1 17 and the spare chain information area 1 18 respectively correspond to the main chain information area 1 2 6 and It has both address information of the spare chain information area 127. If the main chain information area 126 is in a state where data cannot be reproduced due to scratches, dirt, etc., the address of the spare chain information area registered in the indirect entry 148 or 150 as recovery processing According to the information 178, the file entry 161 and the indirect entry 162 of the root directory file can be reproduced from the spare chain information area 127. As described above, in the present embodiment, the file management information necessary for accessing the root directory file is multiplex-recorded, so that the file management information is recorded. Can be remarkably improved. In this embodiment, only the management information of the root directory file is double-recorded. However, by extending the function of the ICB for managing the subdirectory file ^ data file in the same manner, the reliability of the file management information can be improved. It is obvious that the performance is improved.

In this embodiment, one spare chain type information area is described as being recorded immediately after the main chain type information area, but the spare chain type information area is recorded at a position distant from the main chain type information area. May be done. Furthermore, the reliability can be further improved by allocating a plurality of spare chain information areas. Next, the control procedure of the file reproduction process for the information recording medium of the present invention will be described with reference to the block diagram shown in FIG. 2, the data structure diagram shown in FIG. 1, and the file reproduction process procedure shown in FIG. This will be described below with reference to a flowchart. In this file recording process, it is assumed that a data file (Fi1e-a) managed using the directory structure shown in FIG. 9 is reproduced.

(S7001) The system control unit 201 executes the file recording process step (S.50

As in 1), the volume structure information read from the primary volume structure 103 or the spare volume structure 5 105 is interpreted, and the fino combination information area in which the fino combination descriptor 14 1 is recorded The address information of 108 is obtained.

(S 702) The system control unit 201, like the step (S 502) of the file recording process, starts the financing! The main descriptor type information area 110 and the auxiliary chain information area 1 in which the file descriptors 14 2 and 144 of the root directory file are recorded by reading out the 1 Get the address information of 1.

(S703) The system control unit 201 acquires in step (S702) or a later-described step (S704), similarly to the step (S503) of the file recording operation. Using the obtained address information, an attempt is made to reproduce the chain information from the succeeding main chain information area. If data is reproduced in this process, the system control unit 201 executes step (S704) to search for updated chain information. Run. When the data reproduction operation from the main chain information area is not normally executed due to an ECC error or the like, the system control unit 201 attempts to reproduce the chain information from the subsequent spare chain information area. On the other hand, when the data reproduction operation is not performed because the designated main chain type area and the spare chain type area are both in the unrecorded state, the system control unit 201 determines that the last reproduced area is the latest chain type information. Judgment is made and the processing procedure after step (S705) is executed.

(S704) The system control unit 201 determines the step of the file recording operation (S50

As in 4), the address information of the subsequent chain information area is obtained from the indirect entry included in the read chain information. .

(S705) The system control unit 201 determines the step of the file recording operation (S50

Similarly to 5), the root directory file 165 is stored in accordance with the allocation descriptor 180 included in the root directory file entry 161 or 163 included in the latest chain type information read in step (S703). read out. Next, starting from the root directory file 165, the system control unit 201 starts the file entry 154 of the directory file (DirA), the directory file (Dir-A) 153, and the data file (Fi1e-a). The file entry 152 is sequentially read, and finally, the data file (Fi 1 e-a) 151 is read to complete the file reproducing operation. It is clear that the file playback operation described above is similarly performed for the data file (Fi 1 e-b) b data file (Fi 1 ec). In the file reproducing operation according to the present invention, all data files can be searched using only the volume structure itl * information and the file structure information recorded in the volume space. Therefore, it is not necessary to read out the TOC data recorded in the lead-in area to which the logical sector number is not allocated as described in the conventional example as a part of the file search information, and the READ TOC command for accessing the lead-in area is not necessary. There is no need for a dedicated command such as Therefore, since all files are reproduced using only the READ command used for the data reproduction operation in the volume space, such a file storage system of the information recording medium in the PC system is used. This makes it possible to simplify the structure of software that manages the system and software that controls the interface of the optical disk drive. The invention's effect

According to the information recording medium of the present invention, the head position information of the unrecorded area existing in the volume space is recorded in the space as chained information, so that only the data recorded in the volume space is used. It becomes possible to execute the recording and reproducing operation of the file and the file structure information for managing the file.

In addition, the information recording medium of the present invention is allocated in the volume space by managing the record data area used for searching the file structure such as an overrun extent as an invalid stent. All areas are managed by the file structure. Therefore, an overrun stent having a large capacity of several MB or more of an information recording medium capable of rewriting the same area a certain number of times or more can be effectively used as a file storage area. Therefore, the volume space can be efficiently used without waste.

Further, in the present embodiment, the information recording medium of the present invention has a file management information by multiplex-recording the file management information by expanding the data structure of the ICB for managing the file descriptor and the root directory file. Even when a part of the area where is recorded cannot be reproduced, the reliability of the file management information can be significantly improved.

Claims

The scope of the claims

1. A file managed using a volume and file structure is an information recording medium in which the number of times of data recording in the same area is limited while the file is recorded and played back, and the head position of an unrecorded area existing in the volume space. Information is recorded in the volume space as a part of the management information of the root directory Huinore.

An information recording medium characterized by the following.

2. The information recording medium according to claim 1, wherein the head position information is recorded using an indirect entry for managing a recording area of a root directory file.

3. Volume 'Information recording medium in which files managed using the file structure are recorded' and played back and the number of times of recording data in the same area is limited, and invalid data that is not used for volume / file structure information search Polyume 'In addition to being recorded before and after the file structure information and data file, invalid extent management information for managing invalid data recording and area is stored in the volume space as part of the root directory file management information. ®: To be done

An information recording medium characterized by the following.

4. The information recording medium according to claim 3, wherein the invalid extent management information is recorded using an allocation descriptor for managing a storage area of a root directory file.

5. Volume · File capacity managed by using file structure S Recording · Information recording medium that is limited in the number of times of data recording that can be played back and recorded in the same area. Are multiplexed and recorded as ¾m chain type information and preliminary chain type information.

The position information of the area where the main chain type information and the spare chain type information recorded at the head in the volume space are recorded is recorded as a part of the file set descriptor,

The position information of the area where the main chain information and the spare chain information are updated and recorded is recorded as a part of the main chain information and the spare chain information.

An information recording medium characterized by the following.

6. An information recording method for performing a format process on an information recording medium in which a file managed using a poly file structure is recorded and reproduced and the number of times of recording data in the same area is limited. ,

An information recording method, characterized by comprising a chain information recording step of recording, as part of the management information of a root directory file, information on a head position of an unrecorded ^! Area existing in a volume space.

7. The information recording method according to claim 6, wherein the linked information recording step records the head position information of an unrecorded area using an directory for managing a recording area of a root directory file. .

8. Volume An information recording method for performing a format process on an information recording medium in which a file managed using a file structure is recorded and reproduced and the number of times of recording data in the same area is limited,

VolumeVolume invalid data that is not used for searching the file structure information is added and recorded before and after the file structure information and data file, and invalid extent management information that manages invalid data recording and area is stored in the root directory file. A chain type information recording step for recording as part of management information shall be provided.

An information recording method characterized by the following.

9. The information recording method according to claim 8, wherein in the chained information recording step, invalid extent management information is recorded using an indirect entry for managing a recording area of a root directory file.

10. An information recording method for performing a format process on an information recording medium in which a file managed using a volume 'file structure is recorded / reproduced and the number of times of recording data in the same area is limited,

A Fino compound information recording step of recording, as a part of the Fino compound descriptor, position information of an area where the main chain type information and the spare chain type information recorded at the head in the polyspace are recorded;

Multiple recording of main chain type information and auxiliary chain type information having the management information of the root directory file, the main chain type information and the position information of the area where the preliminary chain type information is updated and recorded. Chained information recording step

An information recording method characterized by comprising:

1 1. Volume An information recording apparatus that performs a format process on an information recording medium in which a file managed using a file structure is recorded and reproduced and the number of times of recording data in the same area is limited.

Chain type information recording means in which the head position information of the unrecorded area existing in the volume space is recorded as a part of the management information of the root directory file.

Information recording device characterized by having

1 2. The previous | Β¾ chain type information recording means is to record the root directory file, and to record the head position information of the unrecorded ^! Area using the indirect entry for managing the area. An information record according to claim 11 described above.

1 3. An information recording device that performs format processing on an information recording medium in which files managed using the volume file structure are recorded and played back and the number of times of data recording in the same area is limited. ,

VOLUME • Invalid data that is not used for retrieval of file structure information is added and recorded before and after the file structure information and data file, and invalid extent management information that manages the invalid data recording area manages the root directory file. Chain-type information recording means for recording information as a city

Information recording device So equipped with

14. The method according to claim 13, wherein the chained information recording means records invalid extent management information using an indirect entry for managing the area of a root directory file. Information recording device.

15. An information recording apparatus for performing format processing on an information recording medium in which a file managed using a volume file structure is recorded and reproduced and the number of times of recording data in the same area is limited,

A file information recording means for recording the position information of the area where the main chain type information and the preliminary chain type information recorded at the head in the volume space are recorded as a part of the Fino 1 ^ descriptor,

The root directory file management information, main chain information, and backup chain information are updated. Chain-type information recording means for multiplex-recording main chain-type information having position information of a newly recorded area and preliminary chain-type information;

An information recording device characterized by comprising:

1 6. Volume An information recording method for performing file recording processing on an information recording medium in which files managed using a file structure are recorded and played back and the number of times of data recording in the same area is limited,

A chain-type information recording step in which the head position information of an unrecorded area existing in the volume space is recorded as part of the management information of the root directory file.

An information method characterized by comprising: .

1 7. The chain-type information recording step is characterized by recording a root directory file, using an indirect entry for managing the area, and recording an unrecorded ^! Area head position information. Information recording method described in 16.

1 8. An information recording method for performing a file recording process on an information recording medium in which a file managed using a volume and a file structure is recorded and reproduced and the number of times of recording data in the same area is limited,

VolumeInvalid data that is not used for searching the file structure information is added to and recorded before and after the file structure information and data file, and invalid extent management information for managing the invalid data recording area is stored in the root directory file. A chain-type information recording step for recording as part of management information shall be provided.

An information recording method characterized by the following.

19. The information recording method according to claim 18, wherein the linked information recording step records the invalid extent management information using an indirect entry for managing the recording area B of a root directory file. Method.

20. Volume An information recording method for performing file recording processing on an information recording medium in which a file managed by using a file structure is recorded and reproduced and the number of times of recording data in the same area is limited,

Reconstruction of the position information of the area where the main chain type information and the spare chain type information recorded at the head of the volume in the volume space are reproduced by using the file combination descriptor. Raw steps,

A chain-type information recording step of reproducing the subsequent main chain-type information or preliminary chain-type information or management information of the root directory file using the main chain-type information or the preliminary chain-type information;

A chain type information recording step for multiplex-recording the main chain type information and the spare chain type information having the management information of the directory file, the main chain type information and the position information of the area where the preliminary chain type information is updated and recorded. When

An information recording method characterized by comprising:

21. An information recording apparatus for performing file recording processing on an information recording medium in which a file managed using a volume and a file structure is recorded and reproduced and the number of times of recording data in the same area is limited,

Chain type information recording means for recording the unrecorded and area start position information existing in the volume space as part of the management information of the root directory file

An information recording device comprising:

2 2. The chain-type information recording means, serial root directory file, non-serial with fin Direct E down birds for managing frequency, claim was to record the head position information of the frequency band ² Information described in 1 ^^ «ο

23. An information recording apparatus for performing file recording processing on an information recording medium in which a file managed using a volume and a file structure is recorded and reproduced and the number of times of recording data in the same area is limited,

Invalid data that is not used for searching the file structure information is added and recorded before and after the volume file structure information data file. Chain information recording means for recording as part of management information

An information recording device comprising:

24. The information according to claim 23, wherein the chain-type information recording means records invalid extent management information using an directory for managing a recording area of a root directory file. Enrollment ¾

2 5. Files managed using the volume file structure are recorded and played back. An information recording apparatus for performing a file recording process on an information recording medium on which the number of times of recording data in the same area is limited,

Means for reproducing the position information of the area where the main chain type information and the spare chain type information recorded at the head in the volume space are recorded by using the fiuino composite descriptor;

The main chain type information uses the preliminary chain type information, and the following main chain type information uses the chain type information recording means for reproducing the preliminary chain type information or the management information of the root directory file.

A chain type information recording means for multiplex-recording main chain type information and spare chain type information having the management information of the root directory file, the main chain type information, and the position information of the area where the preliminary chain type information is updated and recorded;

An information note characterized by having ^ S place.

26. An information reproducing method for executing a file reproducing process from an information recording medium in which a file managed using a volume file structure is recorded and the number of times of recording data in the same area is limited,

A fino composite information reproducing step of reproducing the position information of the area where the main chain type information and the preliminary chain type information recorded at the head in the volume space using the Huino composite descriptor;

The main chain type information ヽ is a chain type information recording step for reproducing the subsequent main chain type information or the preparatory chain type information or the management information of the root directory file by using the preliminary chain type information.

An information reproduction and recording method characterized by comprising:

27. An information reproducing apparatus for performing file reproduction processing from an information recording medium in which a file managed using a volume file structure is recorded and the number of times of recording data in the same area is limited,

A fiino composite information reproducing means for reproducing the position information of the area where the main chain type information and the preliminary concatenated type information are recorded at the head in the volume space using the fiino composite descriptor;

^ Use the chain type information or the preliminary chain type information to Chain-type information recording means for playing back chain-type information or root directory file management information;

An information reproduction and recording method characterized by comprising: