WO2008026253A1

WO2008026253A1 - Information recording medium, information recording device and method, and computer program

Info

Publication number: WO2008026253A1
Application number: PCT/JP2006/316978
Authority: WO
Inventors: Keiji Katata; Takeshi Koda; Masayoshi Yoshida; Nobuyuki Takakuwa; Masahiro Kato
Original assignee: Pioneer Corporation
Priority date: 2006-08-29
Filing date: 2006-08-29
Publication date: 2008-03-06

Abstract

In an information recording medium (10), desired user data can be rewritten a plurality of times. The information recording medium includes a prerecording area (151) wherein (i) a prerecording data (1512) and (ii) intermediate file system data (1511) indicating the recording status of the prerecording data to a prescribed application are previously recorded. The information recording medium is also provided with a user data area (15) for recording user data.

Description

Specification

Information recording medium, information recording apparatus and method, and computer program

The present invention relates to an information recording medium such as a DVD, for example, an information recording apparatus and method such as a DVD recorder, and a technical field of a computer program that causes a computer to function as such an information recording apparatus. Background art

[0002] A rewritable information recording medium such as a DVD-RW is configured so that data can be recorded multiple times (that is, rewritable) by utilizing the characteristic change of a phase change film containing a metal or the like. V, ru. An embossed pit or the like is formed in a part of the area of such an information recording medium, thereby providing a rewritable area part and a non-rewritable (in other words, reproduction-only) area part. A hybrid type information recording medium can be formed.

[0003] For example, Patent Document 1 discloses a main program composed of video, audio, text, and the like in a read-only area, and secondary information such as advertisements. By recording navigation programs that describe the playback order of main programs and secondary programs in a rewritable area, record secondary programs in a rewritable area. A technique that enables updating of navigation data is disclosed. For example, Patent Document 2 discloses a technique in which a first session is closed in advance in a multi-session type recording medium. For example, Patent Document 3 discloses a hybrid disk having a pre-formed session and a writable part including a wobbled group that is written by a writer to complete the session. ing. For example, Patent Document 4 discloses a technique for instructing a format for a hybrid optical disc using information on the start address and end address of a read-only area on the hybrid optical disc as parameters. Patent Document 5 discloses a technique for recording data in a write area based on data recorded in an area outside the write area.

[0004] Patent Document 1: JP 2002-101836 A Patent Document 2: Japanese Patent Laid-Open No. 2001-351335

Patent Document 3: Japanese Patent Laid-Open No. 2003-51126

Patent Document 4: Japanese Patent Laid-Open No. 2003-272309

Patent Document 5: Japanese Unexamined Patent Application Publication No. 2005-100580

Disclosure of the invention

Problems to be solved by the invention

[0005] However, with the above-mentioned noble type information recording medium, it is said that the recorded data cannot be reproduced unless an information reproducing apparatus with special specifications is used for V and deviation. Has technical problems. In other words, there is a technical problem that recorded data cannot be reproduced unless an information reproducing apparatus having a special specification that is recognized in advance as a hybrid type information recording medium is used. This means that these hybrid information recording media cannot be played back using general-purpose information playback devices that are now widely used in production facilities, and it is never preferred. Nah ...

[0006] The present invention has been made in view of, for example, the above-described conventional problems. For example, the hybrid information recording medium, the information recording apparatus, and the method can be reproduced by a general-purpose information reproducing apparatus. It is another object of the present invention to provide a computer program that causes a computer to function as such an information recording / reproducing apparatus.

Means for solving the problem

In order to solve the above problem, the information recording medium according to claim 1 is an information recording medium capable of rewriting desired user data a plurality of times, (0 pre-recorded data and Gi) Each of the intermediate file system data indicating the recording state of the pre-record data for a predetermined application includes a pre-record area in which the pre-record data is recorded, and a user data area for recording the user data.

[0008] In order to solve the above-described problem, the information recording apparatus according to claim 10 is an information recording medium capable of rewriting desired user data a plurality of times, wherein (0 pre-record data and

(ii) Information including a pre-recording area in which each of the intermediate file system data indicating the recording state of the pre-recording data for a predetermined application is recorded in advance, and including a user data area for recording the user data The user data is recorded on a recording medium. An information recording apparatus for recording data, a reading means for reading the intermediate file system data recorded in advance in the pre-recording area, and based on the intermediate file system data read by the reading means, Recording means for recording the user data in the user data area.

[0009] In order to solve the above problem, an information recording method according to claim 16 is an information recording medium capable of rewriting desired user data a plurality of times, and includes (0 pre-record data and

(ii) Information including a pre-recording area in which each of the intermediate file system data indicating the recording state of the pre-recording data for a predetermined application is recorded in advance, and including a user data area for recording the user data An information recording method for recording the user data on a recording medium, wherein the intermediate file system data is recorded in advance in the pre-recording area, and the intermediate file system data is read in the reading step. And a recording step of recording the user data in the user data area based on file system data.

[0010] In order to solve the above problem, the computer program according to claim 17 is an information recording medium capable of rewriting desired user data a plurality of times, and includes (0 pre-record data and GO An information recording medium including a pre-recording area in which each of the intermediate file system data indicating a recording state of the pre-recording data for a predetermined application is recorded in advance, and including a user data area for recording the user data. An information recording apparatus for recording user data, the reading unit reading the intermediate file system data recorded in advance in the pre-recording area, and the intermediate file system data read by the reading unit And an information recording apparatus comprising: recording means for recording the user data in the user data area A computer program for controlling recording and reproduction, which controls the computer, wherein the computer program causes the computer to function as at least part of the reading unit and the recording unit.

[0011] The operation and other advantages of the present invention will be made clear by the embodiments described below.

Brief Description of Drawings

FIG. 1 is a schematic plan view showing one basic structure of an optical disc according to the present embodiment. FIG. 2 is a schematic sectional view of a disk and a schematic conceptual diagram of a recording area structure in the radial direction associated with the disk.

FIG. 2 is a data structure diagram conceptually showing a first example of a detailed data structure on an optical disc.

FIG. 3 is a data structure diagram conceptually showing a second example of a detailed data structure on an optical disc.

FIG. 4 is a data structure diagram conceptually showing a third example of a detailed data structure on an optical disc.

FIG. 5 is a block diagram conceptually showing the basic structure of the information recording apparatus in the example.

FIG. 6 is a flowchart conceptually showing a flow of recording operation by the information recording apparatus in the example.

FIG. 7 is a data structure diagram conceptually showing a first example of the data structure of an optical disk after user data is recorded by the information recording apparatus in the example.

FIG. 8 is a data structure diagram conceptually showing a second example of the data structure of the optical disk after user data is recorded by the information recording apparatus in the example.

FIG. 9 is a data structure diagram conceptually showing a first example of the data structure of an optical disc after compatibility processing has been performed by the information recording apparatus in the example.

FIG. 10 is a data structure diagram conceptually showing details of the data structure of the optical disc after the compatibility process has been performed by the information recording apparatus in the example.

FIG. 11 is a data structure diagram conceptually showing a position of AVDP.

Explanation of symbols

10 Optical disc

13 Lead-in area

131 Control data zone

1311 Pre-record area position data

1312 Intermediate file system identification data

15 User data area

151 Pre-record area 1511 Intermediate file system data

1512 ROM data

18 Lead-out area

100 information recorder

110 disk drive

111 Spinner motor

112 Optical pickup

113 Signal recording means

114 CPU

115 memory

116 Data input / output control means

117 bus

120 Host computer

121 CPU

122 memory

123 Operation Z display control means

124 Operation buttons

125 Display No Nenore

126 Data input / output control means

127 bus

128 File system generator

129 Compatibility processor

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, as the best mode for carrying out the invention, description will be given on embodiments of the information recording medium, the information recording apparatus and method, and the computer program of the present invention.

[0015] (Embodiment of Information Recording Medium)

An embodiment of the information recording medium of the present invention is an information recording medium in which desired user data can be rewritten a plurality of times. Each of the intermediate file system data indicating the recording state of the pre-recorded data includes a pre-record area in which the pre-recorded data is pre-recorded, and a user data area for recording the user data.

[0016] According to the embodiment of the information recording medium of the present invention, it is provided with a user data area in which desired user data including video, audio, characters and the like can be recorded a plurality of times.

[0017] Particularly in the present embodiment, the user data area includes a prerecorded area prerecorded at the time of shipment or manufacture of the information recording medium, for example, each of the prerecorded data and the intermediate file system data. The pre-record data is data recorded by forming emboss pits, for example. The intermediate file system data is a predetermined application (for example, a DVD-Video application or a DVD-VR described later) that uses pre-recorded data (and user data recorded in the user data area). This data indicates the prerecorded data recording status for the application. The intermediate file system data is temporary file system data indicating the recording state of the information recording medium before the compatibility processing described later is performed. It is used separately from generated file system data.

[0018] Therefore, based on the intermediate file system data, user data can be recorded in the user data area while maintaining consistency with the pre-record data. When compatibility processing is performed for compatibility with a read-only information recording medium, file system data generated based on the intermediate file system data is recorded on the information recording medium. Is done. As a result, general-purpose information reproduction can be performed by using the file system data generated during the compatibility process while achieving compatibility between the information recording medium according to the present embodiment and the reproduction-only information recording medium. The information recording medium according to the present embodiment can be reproduced by the apparatus. In other words, even if an information recording medium is provided with a pre-recording area, a data structure similar to that of a read-only information recording medium can be realized after the compatibility processing has been performed.

One aspect of the embodiment of the information recording medium of the present invention further comprises a position data recording area for recording position data indicating the position of the pre-recording area. [0020] According to this aspect, the position of the pre-recording area can be preferably recognized.

[0021] Another aspect of the embodiment of the information recording medium of the present invention is to provide identification data for identifying an attribute of the intermediate file system (for example, a tag indicating an intermediate file system for which application) Etc.) is further provided with an identification data recording area.

[0022] According to this aspect, it is possible to preferably recognize the attributes of the intermediate file system.

In another aspect of the embodiment of the information recording medium of the present invention, the pre-recording area is continuously arranged in the user data area.

[0024] According to this aspect, it is not necessary to dispose the pre-record areas in the user data area in a discrete or periodic manner. In other words, the area where user data is recorded is not discretely or periodically dispersed. That is, the area where user data is recorded and the pre-recording area can be clearly distinguished, and as a result, the user data can be suitably recorded.

[0025] In another aspect of the embodiment of the information recording medium of the present invention, the pre-recording area is adjacent to at least one of the start end and the end end of the user data area.

[0026] According to this aspect, the pre-recording areas can be easily arranged continuously. Accordingly, the area portion where the user data is recorded and the pre-recording area can be clearly distinguished, and as a result, the user data can be preferably recorded.

[0027] Another aspect of the embodiment of the information recording medium of the present invention is that before the information recording medium is subjected to a compatibility process for compatibility with a read-only information recording medium. When the user data is recorded in the user data area, an intermediate file system area for recording the pre-record data for the predetermined application and new intermediate file system data indicating the recording state of the user data Further prepare for.

[0028] According to this aspect, before the compatibility process is performed, the recording state that changes with the recording of user data (in other words, the additional recording in other words) is changed to a new intermediate state. Can be shown using file system data.

[0029] Another aspect of the embodiment of the information recording medium of the present invention relates to the information recording medium. For recording file system data indicating a recording state of the user data area for the predetermined application after the compatibility processing for compatibility with a reproduction-only information recording medium is performed. A file system recording area is further provided.

[0030] According to this aspect, file system data can be recorded in the compatibility process. As a result, even if the information recording medium is provided with a pre-recording area, the same data structure as that of the reproduction-only information recording medium can be realized after the compatibility processing is performed.

[0031] In the aspect of the information recording medium having the file system recording area as described above, the pre-recording area is configured so that pointer data indicating the position of the file system area is recorded in advance. Moyo.

[0032] With this configuration, even if one of the pointer data recorded in the vicinity of each of the start end and the end end of the normal user data area is recorded in the pre-record area in advance, the compatibility process can be performed. In this case, the pointer data recorded in advance in the pre-recording area can be copied, and the other of the pointer data recorded in the vicinity of the start end and end of the user data area can be recorded. Therefore, the position of the file system area can be suitably recognized based on the pointer data that does not affect the recording of the pointer data.

[0033] One of the pointer data that is normally recorded in the vicinity of the start and end portions of the user data area can be recorded in advance in the pre-record area. It can also be arranged adjacent to at least one of the starting end and the terminal end. Therefore, it becomes easy to continuously arrange the pre-recording areas as described above, and user data can be suitably recorded.

[0034] In another aspect of the embodiment of the information recording medium of the present invention, the pre-recording data and the intermediate file system data are pre-recorded in the pre-recording area by embossed pits.

[0035] According to this aspect, the pre-recording area can be generated using, for example, a stamper.

This reduces the time and expense required to generate the pre-record area. can do.

(Embodiment of Information Recording Device)

An embodiment of the information recording apparatus of the present invention is an information recording medium in which desired user data can be rewritten a plurality of times, and (0 pre-recorded data and GO recording state of the pre-recorded data for a predetermined application) An information recording apparatus that records the user data on an information recording medium that includes a pre-recording area in which each of the intermediate file system data indicating a pre-recorded area and includes a user data area for recording the user data. And reading means for reading the intermediate file system data recorded in advance in the pre-recording area, and based on the intermediate file system data read by the reading means, in the user data area Recording means for recording user data.

[0037] According to this aspect, based on the intermediate file system data read by the operation of the reading unit, the operation of the recording unit causes the user data area including the pre-recording area in which the pre-recorded data is recorded in advance. User data can be recorded.

Accordingly, based on the intermediate file system data, user data can be recorded in the user data area while maintaining consistency with the pre-record data. When compatibility processing is performed for compatibility with a read-only information recording medium, file system data generated based on the intermediate file system data is recorded on the information recording medium. Is done. As a result, general-purpose information reproduction can be performed by using the file system data generated during the compatibility process while achieving compatibility between the information recording medium according to the present embodiment and the reproduction-only information recording medium. The information recording medium according to the present embodiment can be reproduced by the apparatus. In other words, even if an information recording medium is provided with a pre-recording area, a data structure similar to that of a read-only information recording medium can be realized after the compatibility processing has been performed.

[0039] According to the embodiment of the information recording apparatus of the present invention, when the user data is recorded by the recording means, a new recording state of the pre-recorded data and the user data for the predetermined application is displayed. And a first generation means for generating intermediate file system data. The recording means is generated by the first generation means. The user data is recorded based on the new intermediate file system data.

[0040] According to this aspect, before the compatibility processing is performed, the recording state that changes with the recording of user data (in other words, additional recording in other words) is changed to a new intermediate state. Can be shown using file system data. Therefore, user data can be further recorded in accordance with the recording state that changes as the user data is recorded (in other words, additional recording).

Another aspect of the embodiment of the information recording apparatus of the present invention shows a recording state in the user data area for the predetermined application based on the intermediate file system data read by the reading means. The apparatus further comprises second generation means for generating file system data, and the recording means records the user data based on the file system data generated by the second generation means.

[0042] According to this aspect, even before the compatibility process is performed, the recording state that changes as the user data is recorded (in other words, additional recording) is replaced with the intermediate file system data. It can be shown using file system data. Therefore, user data can be further recorded in accordance with a recording state that changes with recording of user data (in other words, additional recording).

[0043] In the aspect of the information recording apparatus including the second generation unit as described above, the file system data is an area in which the user data can be recorded in an area portion of the user data area excluding the pre-recording area. You can configure it to register as a part.

With this configuration, user data recording can be performed even before the compatibility process is performed.

The recording state that changes with (in other words, additional writing) can be indicated by using file system data instead of intermediate file system data.

[0045] Another aspect of the embodiment of the information recording apparatus of the present invention includes a compatibility unit for performing a compatibility process for the information recording medium so as to be a reproduction-only information recording medium, and the compatibility And a third generation unit that generates file system data indicating a recording state in the user data area for the predetermined application when the compatibility process is performed by the selection unit. When the compatibility process is performed by the compatibility unit, the file system generated by the third generation unit is processed. System data.

[0046] According to this aspect, file system data can be recorded during the compatibility process. As a result, even if the information recording medium is provided with a pre-recording area, the same data structure as that of the reproduction-only information recording medium can be realized after the compatibility processing is performed.

[0047] In the aspect of the information recording apparatus including the third generation unit as described above, pointer data indicating the recording position of the file system data is recorded in the pre-recording area in advance, and the recording unit includes: When the compatibility processing is performed by the compatibility unit, the pointer data recorded in advance in the pre-recording area may be recorded in the user data area.

[0048] With this configuration, even if one of the pointer data recorded in the vicinity of each of the start end and the end end of the normal user data area is recorded in advance in the pre-record area, the compatibility process can be performed. In this case, the pointer data recorded in advance in the pre-recording area can be copied, and the other of the pointer data recorded in the vicinity of the start end and end of the user data area can be recorded. Therefore, the position of the file system area can be suitably recognized based on the pointer data that does not affect the recording of the pointer data.

[0049] The fact that one of the pointer data recorded in the vicinity of the beginning and end of the normal user data area can be recorded in the pre-recording area in advance is that the pre-recording area is stored in the user data area. It can also be arranged adjacent to at least one of the starting end and the terminal end. Therefore, it becomes easy to continuously arrange the pre-recording areas as described above, and user data can be suitably recorded.

[0050] (Embodiment of Information Recording Method)

An embodiment of the information recording method of the present invention is an information recording medium in which desired user data can be rewritten a plurality of times, and (0 pre-recorded data and GO recording state of the pre-recorded data for a predetermined application) An information recording method for recording the user data on an information recording medium including a pre-recording area in which each of the intermediate file system data indicating the information is recorded in advance and having a user data area for recording the user data A reading step for reading the intermediate file system data recorded in advance in the pre-recording area, and the user data area based on the intermediate file system data read in the reading step. And a recording step for recording the user data.

[0051] According to the embodiment of the information recording method of the present invention, it is possible to receive the same benefits as the various benefits of the above-described embodiment of the information recording apparatus of the present invention.

Incidentally, in response to the various aspects of the embodiment of the information recording apparatus of the present invention described above, the embodiment of the information recording method of the present invention can also adopt various aspects.

[0053] (Embodiment of Computer Program)

An embodiment according to the computer program of the present invention is an information recording medium capable of rewriting desired user data a plurality of times, (0 prerecorded data and intermediate recording indicating the recorded state of the prerecorded data for a predetermined application) An information recording apparatus for recording the user data on an information recording medium including a pre-recording area in which each of the file system data is recorded in advance and having a user data area for recording the user data, Reading means for reading the intermediate file system data previously recorded in the pre-recording area, and recording the user data in the user data area based on the intermediate file system data read by the reading means. An information recording apparatus comprising the recording means (that is, the information recording of the present invention described above) Embodiments relating to a live device (including various aspects thereof)) A computer program for reproduction control for controlling a computer provided with the computer, wherein the computer program includes the computer, the reading means, and the recording It functions as at least a part of the means.

[0054] According to the embodiment of the computer program of the present invention, the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program and then executed by the computer. In other words, if the computer program is executed after being downloaded to a computer via communication means, the above-described embodiment of the information recording apparatus of the present invention can be realized relatively easily. Incidentally, in response to the various aspects of the embodiment of the information recording apparatus of the present invention described above, the embodiment of the computer program of the present invention can also adopt various aspects.

An embodiment relating to a computer program product in a computer-readable medium of the present invention is an information recording medium capable of rewriting desired user data a plurality of times, and includes (0 pre-recorded data and GO predetermined application). Each of the intermediate file system data indicating the recording state of the pre-recorded data for an information recording medium including a pre-recorded area in which each of the intermediate file system data is recorded in advance and having a user data area for recording the user data. An information recording apparatus for recording, the reading means reading the intermediate file system data recorded in the pre-recording area in advance, and the user data based on the intermediate file system data read by the reading means A data recording means for recording the user data in a single area. A program command executable by a computer provided in the recording apparatus (that is, the embodiment of the information recording / reproducing apparatus of the present invention described above (including various aspects thereof)) is clearly embodied, and the computer Is made to function as at least a part of the reading unit and the recording unit.

[0057] According to the embodiment of the computer program product of the present invention, if the computer program product is read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product. Alternatively, for example, if the computer program product, which is a transmission wave, is downloaded to a computer via communication means, the above-described embodiment of the information recording apparatus of the present invention can be implemented relatively easily. More specifically, the computer program product may also be configured with computer-readable code (or computer-readable instructions) that functions as an embodiment of the information recording apparatus of the present invention described above.

Incidentally, in response to the various aspects of the embodiment of the information recording apparatus of the present invention described above, the embodiment of the computer program product of the present invention can also adopt various aspects.

[0059] Such an operation and other gains of the present embodiment will become more apparent from the examples described below. Let's be.

As described above, the embodiment according to the information recording medium of the present invention includes the user data area including the pre-recording area in which the pre-recording data and the intermediate file system data are recorded in advance. According to the embodiment of the information recording apparatus of the present invention, it comprises a reading means and a recording means. According to the embodiment of the information recording method of the present invention, the method includes a reading process and a recording process. According to the embodiment of the computer program of the present invention, the computer is caused to function as reading means and recording means. Therefore, the information recording medium according to the present embodiment can be reproduced by a general-purpose information reproducing apparatus.

Example

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0062] (1) Basic structure of information recording medium

First, with reference to FIG. 1, an explanation will be given on an optical disc as an embodiment of the information recording medium of the present invention. Here, FIG. 1 (a) is a schematic plan view showing one basic structure of the optical disk according to the present embodiment, and FIG. 1 (b) is a schematic cross-sectional view of the optical disk and the correspondence to this. FIG. 2 is a schematic conceptual view of a recording area structure in the radial direction.

[0063] As shown in FIGS. 1 (a) and 1 (b), the optical disc 10 according to the present embodiment is provided with a center hole 11 on the recording surface on the disc body having a diameter of about 12 cm, as in the case of DVD. Lead-in area 13, user data area 15, and lead-out area 18 are provided. The optical disc 10 has a recording layer and the like laminated on a transparent substrate 13. In each recording area of the recording layer, for example, tracks such as a groove track and a land track are alternately provided in a spiral shape or a concentric shape with the center hole 11 as the center. On this track, data is divided and recorded in units of ECC blocks. The ECC block is a data management unit that can correct data errors.

In the present embodiment, the optical disc 10 is configured to be able to record data a plurality of times. Specific examples of such an optical disk 10 include DVD-RW and BD (Blu-ray Disc) RW.

It should be noted that the optical disc 10 according to the present embodiment has a single recording as shown in FIG. 1 (a) and FIG. 1 (b). It is not limited to an optical disc having a layer, and may be an optical disc having a plurality of recording layers.

[0066] (2) Data structure on information recording medium

Next, a detailed data structure on the optical disc 10 will be described with reference to FIGS. 2 is a data structure diagram conceptually showing a first example of the detailed data structure on the optical disc 10, and FIG. 3 is a conceptual diagram showing a second example of the detailed data structure on the optical disc 10. FIG. 4 is a data structure diagram conceptually showing a third example of a detailed data structure on the optical disc 10.

As shown in FIG. 2, the optical disc 10 according to the present embodiment includes a pre-record area (in other words, ROM area) 151 at the end of the user data area 15. In the pre-recording area 151, the intermediate file system data 1511 and one specific example of the “pre-recording data” in the present invention constitute a ROM data 1512 and force embossed pits. The intermediate file system data 1511 and the ROM data 1512 are recorded in advance when the optical disc 10 is manufactured.

[0068] Intermediate file system data 1511 is recorded in advance for applications such as DVD-Video application, DV D-VR application, BD-MV application, BD-AV application, etc. Is file system data. In other words, the intermediate file system data 1 511 is provisional file system data generated in advance in consideration of the fact that the ROM data 1512 is recorded in advance.

[0069] In this embodiment, the intermediate file system data 1511 has the same data structure as the file system data generated when the compatibility processing is performed (ie, the final file system data). is doing. Since the file system data generated when compatibility processing is performed is compliant with UDF (Universal Disk Format), its detailed data structure is omitted.

[0070] On the other hand, in the user data area 15 other than the pre-record area 151, desired user data including video, audio, text, etc. is recorded by the user.

Further, the lead-in area 13 is a pre-recording area position indicating the position of the pre-recording area 151. Intermediate file system identification data 1312 for identifying attributes of the data 1311 and the intermediate file system data 1511 (for example, a tag or label indicating what kind of application the intermediate file system data 1511 is file system information) It has a control data zone (CDZ) 131 where and are recorded.

[0071] Specific examples of how to use the optical disc 10 include the following examples. For example, if ROM data 1512 including promotional data such as advertisements is recorded in the pre-recording area 151 in advance, the price of the optical disk 10 can be reduced. Alternatively, if ROM data 1512 including prepaid data together with a digest scene of a movie with a plurality of titles is recorded in the pre-recording area 151 in advance, the user views the digest scene of the movie with a plurality of titles, The desired movie can be purchased and recorded in the user data area 15 without being included in the price range indicated by the prepaid data.

[0072] On the other hand, since an unrecordable (that is, read-only) pre-recording area 151 is provided on the optical disc 10 that should be set as an area where recording is possible on the entire surface, the information recording apparatus described later performs pre-recording. Intermediate file system data 1511 is also recorded in advance so that the area 151 can be recognized. In other words, the information recording apparatus can recognize the recording state and the like of the user data area 15 in which the pre-recording area 151 is arranged in advance by reading the intermediate file system data 1511. As a result, it is possible to record user data in the user data area 15 using a suitable application while maintaining consistency with the pre-recording area 151. Hereinafter, the operation of the information recording apparatus will be described in detail (see FIG. 5 and subsequent figures).

Note that the data structure of the optical disc 10 shown in FIG. 2 is a specific example, and it goes without saying that the present invention is not limited to this. For example, as shown in FIG. 3, the intermediate file system identification data 1312 may be recorded in advance in the pre-recording area 151 by embossed pits. Alternatively, the intermediate file system identification data 1312 is stored in a predetermined area portion of the user data area 15 (for example, an area portion where the LBA (Logical Block Address) is 1000, or an LBA force LRA (Last Recorded Address) —1. To be recorded in the area part) Also good. Further, the intermediate file system data 1511 may be recorded in a predetermined area portion in the user data area 15. These predetermined area portions are preferably recognized by an information recording apparatus described later.

Alternatively, as shown in FIG. 4, a plurality of pre-recording areas 151 a and 151 b may be provided at arbitrary positions in the user data area 15. Of course, one pre-recording area 151 may be provided at an arbitrary position in the user data area 15. However, as will be described in detail later, from the viewpoint of continuously arranging areas other than the pre-recording area 151 in the user data area 15, the pre-recording area 151 includes the start end of the user data area 15 and It is preferred that the end of the terminal is adjacent to either side.

[0075] (3) Basic configuration of information recording apparatus

Next, with reference to FIG. 5, the basic configuration of the embodiment of the information recording apparatus of the present invention will be described. FIG. 5 is a block diagram conceptually showing the basic structure of the information recording apparatus 100 in the example.

As shown in FIG. 5, the information recording apparatus 100 includes a disk drive 110 in which the optical disk 100 is actually loaded and content is recorded, a personal computer that controls recording of the content in the disk drive 110, and the like. Host computer 120.

The disc drive 110 includes an optical disc 10, a spindle motor 111, an optical pickup 112, a signal recording unit 113, a CPU (drive control unit) 114, a memory 115, a data input / output control unit 116, and a bus 117. Yes. The host computer 120 includes a CPU 121, a memory 122, an operation Z display control means 123, an operation button 124, a display panel 125, a data input / output control means 126, and a bus 127.

The spindle motor 111 rotates and stops the optical disc 10 and operates when accessing the optical disc 10. More specifically, the spindle motor 111 is configured to rotate and stop the optical disc 10 at a predetermined speed while receiving spindle servo from a servo unit (not shown) or the like.

The optical pickup 112 constitutes one specific example of the “reading unit” in the present invention. For example, a semiconductor laser element (not shown) and a collimator are used for recording / reproducing on the optical disk 10. A meter lens and objective lens isotonic force are also configured. More specifically, the optical pickup 112 irradiates the optical disk 10 with a light beam such as a laser beam as read light at the time of reproduction at the first power and at the time of recording with the second power as the write light. Irradiate.

The signal recording means 113 constitutes one specific example of the “recording means” in the present invention, and controls the spindle motor 111 and the optical pickup 112 while receiving the control of the CPU 114, so that the optical disk 10 Make a recording. More specifically, the signal recording / reproducing means 113 is constituted by, for example, a laser diode driver (LD driver) and a head amplifier. The laser diode driver generates a driving pulse, for example, and drives a semiconductor laser element provided in the optical pickup 112. The head amplifier amplifies the output signal of the optical pickup 112, that is, the reflected light of the light beam, and outputs the amplified signal.

The CPU (drive control means) 114 is connected to the signal recording means 113 and the memory 115 via the bus 117, and controls the entire disk drive 110 by giving instructions to various control means. Usually, software or firmware for operating the CPU 114 is stored in the memory 115.

The memory 115 is used in general data processing in the disk drive 110 such as a buffer area for recording data and an area used as an intermediate buffer when data is converted to data usable by the signal recording means 113. . In addition, the memory 115 is a program for performing operations as these recorder devices, that is, a ROM area in which firmware is stored, and a variable that is temporarily stored in recording data or necessary for operations such as a firmware program. It is composed of a RAM area in which is stored.

The data input / output control means 116 controls data input / output from the host computer 120 to the disk drive 110. A drive control command issued from an external host computer 120 connected to the disk drive 110 via an interface such as SCSI or ATAPI is transmitted to the CPU 114 via the data input / output control means 116. Similarly, the recording data is exchanged with the host computer 120 via the data input / output control means 116.

Operation Z display control means 123 receives and displays an operation instruction for the host computer 120. Various instructions (for example, a recording start instruction and a recording stop instruction) by the operation button 124 are transmitted to the CPU 121. Based on the instruction information from the operation Z display control means 123, the CPU 121 transmits a control command (command) to the disk drive 110 via the data input / output means 126 to control the entire disk drive 110. Similarly, the CPU 121 can transmit a command requesting the disk drive 110 to transmit the operation state to the host computer 120. As a result, since the operation state of the disk drive 110 (for example, the recording execution state or the recording interruption state) can be grasped, the CPU 121 can display the disk drive 110 on the display panel 125 such as a fluorescent tube or LCD via the operation Z display control means 123. It is possible to output the operation state.

The CPU 121 controls the entire host computer 120. In particular, the CPU 121 includes a file system generation unit 128 that constitutes a specific example of the “first generation unit”, “second generation unit”, and “third generation unit” in the present invention, and the “compatibility unit” in the present invention. A compatibility processing unit 129 that constitutes a specific example of the above.

[0086] When user data is recorded in the user data area 15 described later in detail, the file system generation unit 128 generates new intermediate file system data 1513 reflecting the new recording of the user data. . Further, when the compatibility process is performed on the optical disc 10, final file system data 1514 is generated.

[0087] The compatibility processing unit 129 performs compatibility processing for compatibility between the optical disc 10 and, for example, a reproduction-only optical disk such as a DVD-ROM (in other words, without closing processing). Is finalized).

[0088] The memory 122 is an internal storage device used by the host computer 120. For example, a ROM area in which a firmware program such as BIOS (Basic Input / Output System) is stored, an operating system, an operation of an application program, etc. It consists of a RAM area that stores variables and other necessary variables.

[0089] (4) Specific operation example

Next, with reference to FIG. 6 to FIG. 11, the flow of the recording operation by the information recording apparatus 100 according to the present embodiment will be described. FIG. 6 is a flowchart conceptually showing the flow of the recording operation by the information recording apparatus 100 according to the present embodiment, and FIG. FIG. 8 is a data structure diagram conceptually showing a first example of the data structure of the optical disc 10 after user data is recorded by the information recording apparatus 100. FIG. 8 is a diagram showing information recording according to the present embodiment. FIG. 9 is a data structure diagram conceptually showing a second example of the data structure of the optical disc 10 after user data is recorded by the device 100. FIG. 9 is a diagram of the information recording device 100 according to the present embodiment. FIG. 10 is a data structure diagram conceptually showing a first example of the data structure of the optical disc 10 after the compatibility key processing is performed, and FIG. 10 is a diagram showing the compatibility key processing by the information recording apparatus 100 according to the embodiment. FIG. 11 is a data structure diagram conceptually showing details of the data structure of the optical disc 10 after the recording is performed, and FIG. 11 is a data structure diagram conceptually showing the position of the AVDP.

[0090] As shown in FIG. 6, first, by referring to the pre-recording area position data 1311 (or by accessing a predetermined area portion in the user data area 15), recording is performed in the pre-recording area 151. The obtained intermediate file system data 1511 is acquired (step S 101). Here, if VRS (Volume Recognition Sequence) or AVDP (Anchor Volume Description Pointer) is recorded in the area where LBA is 16 or 256, if there is file system data 1514 indicated by VRS or AVDP, It may be used to perform the recording operation described later.

[0091] After that, the intermediate file system data 1511 acquired in step S101 is used to maintain consistency with the pre-record area 151 (specifically, for example, user data is recorded in the pre-record area 151). In order to manage the pre-recording area 151 and newly recorded user data at the same level), the user data area 15 has a user area other than the pre-recording area 151. Data is recorded (step S102). At this time, it is preferable to recognize what application the intermediate file system data 1511 is intended for by referring to the intermediate file system identification data 1312. Subsequent recording of user data is preferably performed using the recognized recognition.

More specifically, for example, when user data is recorded while conforming to the DVD-Video application, the operation of the file system generation unit 128 is performed according to the recording of user data in the user data area 15. , Reflecting the newly recorded user data The new intermediate file system data 1513 is generated. Then, the user data is recorded using the newly generated intermediate file system data 1513. The generated intermediate file system data 1513 is preferably recorded on the optical disc 10 as shown in FIG. In other words, the recording of user data proceeds in the form of being added to the intermediate file system data 1511 recorded in the pre-recording area 151 in advance.

Note that the area where new intermediate file system data 1311 shown in FIG. 7 is recorded corresponds to a specific example of “intermediate file system area” in the present invention.

On the other hand, when recording user data while conforming to, for example, a DVD-VR application, first, based on the intermediate file system data 1511 read in step S 101, the file system generating unit 128 The operation generates file system data 1514 (specifically, UDF 2.00 Sparable Partition file system in this example). At this time, in the file system data 1514, the pre-recording area 151 is set to allocated on the Unallocated Space Descriptor, and the partition (Partition) indicating the area where the user data is recorded extends to the pre-recording area 151! /, The partition size and recordable capacity are set. Thereafter, as shown in FIG. 8, recording of user data proceeds using file system data 1514. The generated file system data 1514 is preferably recorded on the optical disc 10 as shown in FIG. Of course, according to the recording of user data in the user data area 15, the file system generation unit 128 generates file system data 1514 reflecting the newly recorded user data.

It should be noted that the area partial force in which the file system data 1514 shown in FIG. 8 is recorded constitutes one specific example of the “file system area” in the present invention. The file system data 1514 is generally recorded at the beginning of the user data area 15.

[0096] Referring again to FIG. 6, subsequently, it is determined whether or not the compatibility process is performed (step S103).

If it is determined as a result of determination in step S 103 that compatibility processing is not performed (step S 103: No), the process returns to step S 102 and recording of user data is continued. On the other hand, if it is determined that the compatibility process is performed as a result of the determination in step S103 (step S103: Yes), the compatibility process is performed by the operation of the compatibility process unit 129. (Step S104).

[0099] More specifically, first, by the operation of the compatibility processing unit 129, an unrecorded area portion between the lead-in area 13 and recorded user data, or an unrecorded area between recorded user data. For example, padding data such as OOh data is recorded in the recording area.

[0100] Subsequently, for example, when recording user data in conformity with the DVD-Video application, a menu (for example, VMG) conforming to the DVD-Video application is generated and recorded, and the user data area 15 is not yet recorded. Padding data is recorded in the recording area. Thereafter, file system data 1514 (specifically, UDF Bridge (ISO9660 and UDF Read Only file system) in this example) is generated and recorded by the operation of the file system generation unit 128. Thereafter, padding data is recorded in unrecorded area portions of the lead-in area 13 and the lead-out area 18. As a result, as shown in FIG. 9, the optical disc 10 is compatible with a read-only optical disc.

[0101] On the other hand, for example, when user data is recorded in conformity with the DVD-VR application, padding data is recorded in an unrecorded area portion of the user data area 15, as shown in FIG. Data and user data are collectively set as a VR data file. Also, a VR control file for controlling recording or reproduction of the VR data file is generated and recorded. Further, the file system data 1514 is newly generated and recorded by the operation of the file system generation unit 128. This newly generated file system data 1514 has the pre-record area 151 set to allocated on the Unallocated Space Descriptor, the pre-record area 151 set to a partition on the Partition Descriptor, and the pre-record area on the Unallocated Space Bitmap. 15 1 is set to the used sector number and Write Protected is set to protected. Thereafter, padding data is recorded in the unrecorded areas of the lead-in area 13 and the lead-out area 18. As a result, as shown in FIG. 10, the optical disc 10 is compatible with a read-only optical disc.

As described above, according to the present embodiment, the pre-record area 1 is stored in the user data area 15. 51, but user data is recorded in the user data area 15 while maintaining consistency with the ROM data 1512 based on the intermediate file system data 1511 previously recorded in the pre-recording area 151. can do. When a compatibility process for compatibility with a read-only optical disk is performed, final file system data 1514 is generated and recorded on the optical disk 10. This makes it possible to achieve compatibility between the optical disc 10 according to the present embodiment and the read-only optical disc. In other words, even with the optical disc 10 provided with the pre-recording area 151, after the compatibility processing is performed, the data structure is the same as that of the information recording medium dedicated to reproduction, and the pre-recording area 151 has the same data structure. A data structure reflecting the existence can be taken. Then, by using the file system data generated at the time of the compatibility process, even a general-purpose information reproducing apparatus can use the optical disc 10 according to the present embodiment (specifically, the user recorded on the optical disc 10). Data and ROM data 1512) can be suitably reproduced.

[0103] If the intermediate system data 1511 is not recorded in advance, it is difficult to record user data in consideration of the presence of the ROM data 1512. As a result, the pre-recording area 151 is not stored in the compatibility process. Considering this, it can be difficult to generate file system data 1514. This means that the pre-record area 151 cannot be played back unless it is a dedicated information playback device that needs to refer to various data other than the file system data 1514 or that requires specially specified operations. means.

On the other hand, in the present embodiment, since the intermediate system data 1511 is recorded in advance, the user data can be recorded in consideration of the presence of the ROM data 1512. As a result, during the compatibility processing, File system data 1514 can be generated in consideration of the pre-record area 151. As a result, it is possible to reproduce the pre-record area 151 with a general-purpose information reproducing apparatus, even if it is not a dedicated information reproducing apparatus that needs to refer to various data other than the file system data 1514 or requires a specially specified operation. can do.

[0105] By providing the pre-recording area 151 adjacent to the end of the user data area 15, the pre-recording area 151 is not divided. Similarly, the area of the user data area 15 other than the pre-record area 151 is not divided. In other words, each of the areas other than the pre-recording area 151 in the pre-recording area 151 and the user data area 15 respectively. Can be ensured. Thus, the pre-recording area 151 can be provided without hindering the recording of user data in the area other than the pre-recording area 151 in the user data area 15.

As shown in FIG. 11, when the pre-record area 151 is arranged adjacent to the end portion of the user data area 15, one AVDP (ie, AVDP # 2 and the LBA power The AVDP recorded in the area portion to be LRA (or LRA-256) is included in the pre-record area 151. However, even in this case, AVDP # 1 may be recorded on the optical disk 10 by copying AVDP # 2 to the area portion where the LBA is 256 during the compatibility process.

In the above-described embodiments, the hard disk as an example of the information recording medium, and the power and the recorder and player related to the hard disk as an example of the information recording / reproducing apparatus. The present invention is not limited to this, but can be applied to other high-density recording or various information recording media compatible with a high transfer rate, its recorder and its player.

[0108] The present invention is not limited to the above-described embodiments, but can be appropriately modified within the scope of the claims and the entire specification without departing from the gist or concept of the invention which can be read. An information recording medium, an information recording apparatus and method, and a computer program are also included in the technical scope of the present invention.

Claims

The scope of the claims

[1] An information recording medium capable of rewriting desired user data multiple times,

(0 Pre-recorded data and GO A user data area for recording the user data, including a pre-recorded area in which each of the intermediate file system data indicating the recording state of the pre-recorded data for a predetermined application is recorded in advance. An information recording medium characterized by comprising:

[2] The information recording medium according to claim 1, further comprising a position data recording area for recording position data indicating the position of the pre-recording area.

[3] The information recording medium according to claim 1, further comprising an identification data recording area for recording identification data for identifying an attribute of the intermediate file system data.

[4] The information recording medium according to claim 1, wherein the pre-recording area is continuously arranged in the user data area.

5. The information recording medium according to claim 1, wherein the pre-recording area is adjacent to at least one of a start end and a termination end of the user data area.

[6] When the user data is recorded in the user data area before the information recording medium is subjected to a compatibility process for compatibility with a read-only information recording medium, The information according to claim 1, further comprising an intermediate file system area for recording new intermediate file system data indicating a recording state of the pre-record data and the user data for a predetermined application. Information recording medium.

[7] A file indicating a recording state of the user data area for the predetermined application after the information recording medium is subjected to compatibility processing for compatibility with a read-only information recording medium 2. The information recording medium according to claim 1, further comprising a file system recording area for recording system data.

8. The information recording medium according to claim 7, wherein pointer data indicating the position of the file system area is recorded in the pre-recording area in advance.

9. The information recording medium according to claim 1, wherein the prerecorded data and the intermediate file system data are recorded in advance in the prerecorded area by embossed pits.

[10] An information recording medium in which desired user data can be rewritten a plurality of times, each of (0 prerecorded data and intermediate file system data indicating the recording state of the prerecorded data for a predetermined GO application beforehand. An information recording apparatus for recording the user data on an information recording medium including a recorded pre-recording area and having a user data area for recording the user data,

Reading means for reading the intermediate file system data recorded in advance in the pre-recording area;

Recording means for recording the user data in the user data area based on the intermediate file system data read by the reading means;

An information recording apparatus comprising:

[11] When the user data is recorded by the recording means, first generation means for generating new intermediate file system data indicating the prerecorded data and the recording state of the user data for the predetermined application is further provided. Prepared,

The recording unit according to claim 1, wherein the recording unit records the user data based on the new intermediate file system data generated by the first generation unit.

Item 10. The information recording device according to item 10.

[12] The apparatus further comprises second generation means for generating file system data indicating a recording state in the user data area for the predetermined application based on the intermediate file system data read by the reading means,

11. The information recording apparatus according to claim 10, wherein the recording unit records the user data based on the file system data generated by the second generation unit.

[13] The file system data is characterized in that an area portion excluding the pre-recording area in the user data area is registered as an area portion where the user data can be recorded. 13. The information recording device according to item 12.

[14] compatibility means for performing compatibility processing for the information recording medium to achieve a reproduction-only information recording medium;

Third generation means for generating file system data indicating a recording state in the user data area for the predetermined application when the compatibility processing is performed by the compatibility means;

Further comprising

11. The range of claim 10, wherein the recording unit records the file system data generated by the third generation unit when the compatibility processing is performed by the compatibility unit. The information recording device described.

[15] In the pre-recording area, pointer data indicating a recording position of the file system data is recorded in advance.

The recording means records the pointer data previously recorded in the pre-recording area in the user data area when the compatibility processing is performed by the compatibility means. 15. An information recording device according to item 14 of the scope.

[16] An information recording medium in which desired user data can be rewritten a plurality of times, each of (0 prerecorded data and intermediate file system data indicating the recording state of the prerecorded data for a predetermined GO application beforehand. An information recording method for recording the user data on an information recording medium including a recorded pre-recording area and having a user data area for recording the user data,

A reading step of reading the intermediate file system data recorded in advance in the pre-recording area;

A recording step of recording the user data in the user data area based on the intermediate file system data read in the reading step;

An information recording apparatus comprising:

[17] An information recording medium in which desired user data can be rewritten a plurality of times, and each of (0 prerecorded data and intermediate file system data indicating a recording state of the prerecorded data for a predetermined GO application is stored in advance. The information recording medium includes a pre-recorded area and a user data area for recording the user data. An information recording apparatus for recording the one data, wherein the intermediate file system data recorded in advance in the pre-recording area is read, and the intermediate file system data read by the reading means is A computer program for recording / reproduction control for controlling a computer provided in an information recording apparatus comprising a recording means for recording the user data in a user data area,

The computer program causes the computer to function as at least part of the reading unit and the recording unit.