WO2007023709A1

WO2007023709A1 - Information recording device and method, information reproducing device and method, computer program and information recording medium

Info

Publication number: WO2007023709A1
Application number: PCT/JP2006/316040
Authority: WO
Inventors: Masayoshi Yoshida; Takeshi Koda
Original assignee: Pioneer Corporation
Priority date: 2005-08-24
Filing date: 2006-08-15
Publication date: 2007-03-01
Also published as: TW200737138A

Abstract

An information recording device (200) is provided with a first recording means (353) for recording recording data in a data area (106); a second recording means (353) for recording management data to be used for defect management and recording of the recording data in first management areas (113, 114, 119); a closing means (354) for performing closing processing; and an ensuring means (353) for ensuring second management areas (134, 135, 139) wherein the management data is to be recorded after the closing processing is performed.

Description

Specification

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

Technical field

[0001] The present invention relates to an information recording medium such as an optical disc, an information recording apparatus and method for recording recording data on such an information recording medium, and information for reproducing the recording data recorded on such an information recording medium. The present invention relates to a reproduction apparatus and method, and a technical field of a computer program that causes a computer to function as such an information recording apparatus or information reproduction apparatus.

Background art

[0002] Blu-ray Disc is being developed as a next-generation optical disc for DVD that is currently spreading. Blu-ray Discs are used for recording and playback of recording data on DVDs, and record data is recorded and played back using blue laser light having a wavelength shorter than that of red laser light. In addition, by making the pitch of the tracks formed on the recording surface smaller, Blu-ray Disc achieves a recording capacity of approximately 23 GB with a single recording layer.

[0003] Since various information recording media including such a Blu-ray Disc have a large recording capacity, it is not so much to record recording data at a time on the entire information recording medium. It is not considered to be frequent. Therefore, in order to efficiently use the recording capacity of the information recording medium, border closing processing is performed to stop recording the recording data halfway and enable it to be reproduced by the information reproducing apparatus or the like. . In the border closing process, for example, when recording data of a certain size or a size desired by the user is recorded, a border-out area that prevents the optical pickup from jumping to the outer peripheral side is created at the end of the recording data. In addition, a border-in area that is used when recording data is additionally written is created at the end of the border-out area. Thus, for example, if attention is focused on recording data of a certain size or the size desired by the user, the format in which the force is surrounded by the lead-in area and lead-out area And has the same format as that recorded on the information recording medium. As a result, recording of the recording data can be stopped in the middle of recording the recording data on one information recording medium at a time. As a result, the information reproducing apparatus can reproduce the information recording medium without performing the border closing process.

Furthermore, in various information recording media including Blu-ray Disc, differential management is performed as a technique for improving the reliability of recording and reproduction (or reading) of recorded data. In other words, when there are scratches or dust present on the information recording medium, or deterioration of the recording medium (collectively referred to as “diffetats”), the recording data or recording to be recorded at the location where the differential exists The recorded data is recorded on the inner spare area (ISA) provided on the inner circumference side of the information recording medium (for example, in the vicinity of the lead-in area) or on the outer circumference side of the information recording medium (for example, the lead-out area). Record in the outer spare area (OSA) provided near the area. As described above, by saving the recording data that may cause recording failure or reading failure due to the differential to the inner spare area or the outer spare area, the reliability of recording and reproduction of the recording data can be improved. (See Patent Document 1)

In general, in order to perform differential management, a differential list is created. In the differential list, the address information indicating the position of the differential on the information recording medium and the recording data that should have been recorded at the location where the differential exists or the recorded recording data are saved. Address information indicating the location of the inner spare area or outer spare area (for example, the recording position in the inner spare area or outer spare area) is recorded. This defect list is stored on a temporary disc management area (TDMA) provided on the inner circumference side of the information recording medium (for example, in the vicinity of the lead area) or on the outer circumference side of the information recording medium ( For example, record in the temporary disk management area provided near the lead-out area.

[0005] Patent Document 1: International Publication No. 2004Z077432 Pamphlet

Disclosure of the invention

Problems to be solved by the invention

[0006] On the other hand, from the viewpoint of reducing manufacturing costs, etc., a new version of Blu-ray Disc has been developed. The launch is underway. Specifically, the development of a new version of Blu-ray Disc that uses a dye film as the recording film is being promoted compared to the current Puryon Blu-ray Disc that uses a phase change film as the recording film. Yes. In this new version of Blu-ray Disc, the reflectance with respect to laser light changes compared to the current version of Blu-ray Disc. Along with this, the signal level of the push-pull signal in the unrecorded portion where the recording data is not recorded increases. For this reason, when a new version of Blu-ray Disc is loaded onto an existing information player that does not support the new version of Blu-ray Disc, the optical pickup moves to the unrecorded part. A push-pull signal in an unrecorded portion cannot be detected suitably, and as a result, a technical problem that operation failure may be caused may occur.

[0007] In particular, if the temporary disk management area and the outer spare area provided on the outer peripheral side of the information recording medium are used by the differential management before performing the border closing process described above, the existing information reproducing apparatus Tries to access the temporary disk management area and outer spare area provided on the outer circumference of the information recording medium in order to read the recorded data. As a result, there is a strong possibility that the optical pickup moves to an unrecorded portion, and a technical problem that the possibility of causing the above-described malfunction increases can occur.

[0008] On the other hand, during differential management, the temporary disk management area provided on the outer peripheral side of the information recording medium and the temporary spare provided on the inner peripheral side of the information recording medium without using the outer spare area are used. By using only the disk management area and the inner spare area, it is possible to avoid the above-mentioned disadvantages. In other words, only the temporary disk management area and the inner spare area provided on the inner circumference side of the information recording medium without providing the temporary disk management area and the outer spare area provided on the outer circumference side of the information recording medium. By providing, it is also conceivable to avoid the above inconvenience. However, if such a configuration is adopted, the following technical problems may occur. Specifically, when performing the border close process, it is necessary to record dummy data or the like in an unrecorded portion existing on the inner circumference side from the recorded data. For this reason, after the border closing process, it is provided on the inner circumference side of the information recording medium. Since the temporary disk management area and inner spare area can no longer be used, there is a technical problem that it is not possible to perform differential management thereafter.

[0009] The problems to be solved by the present invention are exemplified as described above. The present invention relates to an information recording apparatus and method, an information reproducing apparatus and method, and a computer, which make it possible to preferably record and reproduce recorded data even after border closing processing. Alternatively, it is an object to provide a computer program and an information recording medium that function as an information reproducing device.

Means for solving the problem

[0010] (Information recording device)

In order to solve the above problems, an information recording apparatus of the present invention is an information recording apparatus that records recording data on an information recording medium including a data area and a first management area, and the recording data is stored in the data area. First recording means for recording in the first management area, second recording means for recording management data used for management of differentials generated in the data area and recording of the recording data, and the data A closing unit for performing a closing process on the recording data in a predetermined unit recorded in the area; and a securing unit for securing a second management area in which the management data is recorded after the closing process.

[0011] According to the information recording apparatus of the present invention, recording data including video data, audio data, and other various data is recorded in the data area on the information recording medium by the operation of the first recording means. Used to record management data and recording data used to manage the differential generated in the data area by the operation of the second recording means, following or in parallel with recording the recording data by the first recording means. Management data is recorded in the first management area on the information recording medium. After recording data of a predetermined unit (for example, a fixed size or a size desired by the user) is recorded in the data area, the recording data is closed by the operation of the closing means. . As a result, recording of the recording data on the information recording medium can be stopped at any time, and the recording data recorded on the information recording medium can be reproduced by the information reproducing apparatus. Further, even after the closing process is performed, the recording data is changed to the data area by the operation of the first recording means. Can be further recorded.

[0012] It should be noted that the present invention will be described on the assumption that an information recording medium having slightly different characteristics from that of an existing information recording medium is used. Specifically, the information recording medium used in the present invention has a change in reflectance with respect to laser light used for recording data, for example, as compared with existing information recording media. If data is recorded, the signal level of the push-pull signal in the unrecorded part will increase. For this reason, when the information recording medium used in the present invention is loaded into an existing information reproducing apparatus corresponding to a new information recording medium, if the optical pickup moves to an unrecorded portion, The push-pull signal cannot be suitably detected, and as a result, a malfunction can be caused. Particularly in the present invention to avoid such inconvenience, the second management area for recording management data after the closing process by the closing means is secured on the information recording medium by the operation of the securing means. The At this time, the securing means may secure a desired area portion on the information recording medium as the second management area. That is, for example, according to the operation of the information recording apparatus or according to the recording of the recording data, the desired area portion is secured to be used as the second management area, and the desired area portion is used as the second management area. You may comprise. Alternatively, a predetermined area portion (for example, a predetermined area portion defined by a standard) scheduled to be used as the second management area is activated as the second management area, thereby enabling the second management area. A management area may be secured. That is, the area that is planned to be used as the second management area and is still used as the second management area (in other words, invalidated) is changed to the second management area. The second management area may be secured by enabling it so that it can be used as an area. After the close process is performed, management data is recorded in the second management area instead of the first management area. In other words, until the close process is performed, the recorded data is recorded while the management data is recorded in the first management area. However, after the close process is performed, the management data is recorded in the second management area. However, the recorded data is recorded.

For this reason, for example, if the first management area is provided on the inner circumference side (for example, on the inner circumference side with respect to the recording data recorded by the first recording means), the information is recorded in the existing information reproducing apparatus. Even when the medium is loaded, there is little or no access to the outer periphery of the information recording medium (that is, the unrecorded portion where no recorded data is recorded) in order to read the management data. As a result, there is almost no or no malfunction of the existing information reproducing apparatus.

[0014] Further, after the close process is performed, even in an existing information reproducing apparatus, the recorded data recorded on the information recording medium may be stored within the range in which the close process is performed. Can be regenerated. Needless to say, the information reproducing apparatus corresponding to the information recording medium according to the present invention can naturally reproduce the data recorded on the information recording medium.

[0015] Even after the closing process is performed, the recording data can be recorded while performing the differential management or the like using the newly secured second management area. Furthermore, in the case of an information reproducing apparatus compatible with the information recording medium according to the present invention, management data recorded in the second management area newly secured is acquired and differential management is performed. The recorded data recorded in the data area can be reproduced.

[0016] As described above, according to the information recording apparatus of the present invention, it is possible to suitably record recording data even after performing the closing process, and the recording recorded by the information recording apparatus. If it is data, each of the existing information reproducing apparatus and the information reproducing apparatus corresponding to the information recording medium can be suitably reproduced.

[0017] In one aspect of the information recording apparatus of the present invention, the second recording unit is configured to store the management data recorded in the first management area after the closing process is performed for the first time. Record in the second management area secured by.

[0018] According to this aspect, since the management data recorded in the first management area is also recorded in the second management area, the information recording device or the like can manage the management data recorded in the second management area. Using data, it is possible to perform differential management over the entire information recording medium. In other words, it is not necessary to refer to the first management area more than necessary or hardly, so that the operation of the information recording device can be simplified.

In another aspect of the information recording apparatus of the present invention, the securing means newly secures the second management area every time the closing process is performed. [0020] According to this aspect, since the second management area is newly secured in accordance with the closing process, the management data is suitably recorded in the second management area that is appropriately secured according to the recording of the recording data. can do.

[0021] In the aspect of the information recording apparatus in which the second management area is ensured each time the close process is performed as described above, the second recording unit is configured so that the securing unit newly secures the second management area. The management data recorded in the second management area that was used in the second management area may be recorded in the newly secured second management area.

[0022] With this configuration, each time a new second management area is secured, it is recorded in the newly secured second management area in the second management area used so far. Management data is recorded. Therefore, the information recording apparatus or the like can perform the data management over the entire information recording medium using the management data recorded in the newly secured second management area. Thereby, operation | movement of an information recording device etc. can be simplified.

[0023] In another aspect of the information recording apparatus of the present invention, the securing means includes the second management area in a buffer area created following the recording data of the predetermined unit on which the closing process is performed. Secure.

[0024] According to this aspect, the second management area is secured in the buffer area such as the border-in area. For this reason, the management data can be suitably recorded in the second management area located in the vicinity of the area where the recording data is recorded in accordance with the recording of the recording data.

[0025] In another aspect of the information recording apparatus of the present invention, the information recording medium has a disc shape, and the first management area is provided on a relatively inner peripheral side of the information recording medium. The securing means secures the second management area on the relatively outer peripheral side of the information recording medium.

[0026] According to this aspect, even when the information recording medium is loaded into the existing information reproducing apparatus, in order to read the management data, the information recording medium is read on the outer periphery side (that is, the recording data is recorded, (There is little or no access to the unrecorded part). As a result, little or no malfunction of existing information playback devices is caused.

[0027] When the second management area is secured by enabling the predetermined area portion, It is preferable that the predetermined area portion is determined so as to be positioned relatively on the outer peripheral side of the information recording medium! /.

[0028] In an aspect of the information recording apparatus that secures the second management area on the relatively outer peripheral side of the information recording medium as described above, the first recording means is configured to record the recording on the outer peripheral side of the first management area. Data may be recorded, and the securing means may be configured to secure the second management area on the outer peripheral side of the recorded data recorded by the first recording means.

[0029] With this configuration, since the second management area is secured on the outer periphery side of the data area, in the existing information reproducing apparatus that recognizes the recorded data within the range in which the close process is performed. Cannot recognize the second management area. Therefore, even if the information recording medium is loaded into the existing information reproducing apparatus, the data is recorded on the outer periphery side of the information recording medium (that is, the recorded data is recorded and not recorded in the unrecorded portion) in order to read the management data. There is little or no activity. In particular, this causes little or no malfunction of existing information reproducing apparatuses.

[0030] When the second management area is secured by enabling the predetermined area portion, the predetermined area portion is located on the outer peripheral side (more than the recording data recorded by the first recording means). Specifically, it is preferable that it is determined so that it is located on the outer periphery side of the data area.

[0031] In another aspect of the information recording apparatus of the present invention, the second recording means records area position data indicating a position of the second management area when the closing process is performed.

[0032] According to this aspect, it is possible to preferably recognize the position of the second management area newly secured. Thereby, the management data can be suitably recorded in the second management area, or the record management data recorded in the record management area can be suitably obtained.

[0033] In the aspect of the information recording apparatus for recording the area position data as described above, the second recording means records the area position data in at least one of the first management area and the second management area. May be configured to do so.

[0034] With this configuration, it is possible to preferably recognize the position of the second management area newly secured. As a result, management data can be suitably recorded in the second management area. [0035] According to another aspect of the information recording apparatus of the present invention, there is provided control means for controlling the second recording means so as to record the management data in the second management area after the closing process. In addition.

[0036] In this aspect, until the close process is performed, the management data is recorded in the first management area and the recording data is recorded. After the close process is performed, the second management area is recorded. The recording data is recorded while the management data is being recorded. Therefore, the above-described benefits can be suitably enjoyed.

[0037] According to another aspect of the information recording apparatus of the present invention, the management data is (0) differential position data indicating a position where the differential occurs on the data area, and (ii) a position where the differential is generated. The evacuation data which is the recording data to be recorded or recorded, and (iii) the evacuation position data indicating the position where the evacuation data is recorded are included.

[0038] According to this aspect, it is possible to suitably perform differential management even after performing the closing process.

[0039] In another aspect of the information recording apparatus of the present invention, the management data includes calibration data for calibrating power at the time of recording the recording data.

[0040] According to this aspect, it is possible to suitably calibrate the power when recording the recording data even after performing the closing process.

Note that “management data” in the present invention refers to data used indirectly or in some form for recording management of recording data, in addition to data used directly for recording management of recording data. Including

[0042] (Information recording method)

In order to solve the above problems, an information recording method of the present invention is an information recording method for recording recording data on an information recording medium comprising a data area and a first management area, wherein the recording data is stored in the data area. A first recording step for recording in the first management area, and a second recording step for recording in the first management area at least management data used for managing the difference occurring in the data area and managing the recording of the recording data. A close unit that performs a close process on the recording data in a predetermined unit recorded in the data area. And a securing step for securing a second management area in which the management data is recorded after the closing process is performed.

[0043] According to the information recording method of the present invention, it is possible to receive the same benefits as the benefits of the information recording apparatus of the present invention described above.

[0044] Incidentally, the information recording method of the present invention can also adopt various aspects in response to the various aspects that can be adopted by the information recording apparatus of the present invention described above.

[0045] (Information reproducing apparatus)

In order to solve the above problems, an information reproducing apparatus of the present invention is an information reproducing apparatus for reproducing the recorded data recorded on the information recording medium by the above-described information recording apparatus of the present invention (including various aspects thereof). An acquisition means for acquiring the management data recorded in at least one of the first management area and the second management area; and the data area based on the acquired management data. Playback means for playing back the recorded data.

[0046] According to the information reproducing apparatus of the present invention, the first management area force management data is acquired by the operation of the acquisition unit, for example, before the close process is performed, and the close process is performed, for example, before the close process is performed. Later, the second management area power management data is obtained. The recording data recorded in the data area can be reproduced based on the acquired management data by the operation of the reproducing means. As a result, the recorded data can be suitably reproduced after the closing process.

[0047] Incidentally, the information reproducing apparatus of the present invention can also adopt various aspects in response to the various aspects that can be adopted by the information recording apparatus of the present invention described above.

[0048] (Information reproduction method)

In order to solve the above problems, an information reproduction method of the present invention is an information reproduction method of reproducing the recorded data recorded on the information recording medium by the above-described information recording apparatus of the present invention (including various aspects thereof). A method for acquiring the management data recorded in at least one of the first management area and the second management area, and on the data area based on the acquired management data. A reproducing step of reproducing the recorded data. [0049] According to the information reproducing method of the present invention, it is possible to receive the same benefits as those of the information reproducing apparatus of the present invention described above.

[0050] Incidentally, in response to the various aspects that can be adopted by the information reproducing apparatus of the present invention described above, the information reproducing method of the present invention can also adopt various aspects.

[0051] (Computer program)

In order to solve the above problems, the first computer program of the present invention is a computer program for recording control for controlling a computer provided in the above-described information recording apparatus (including various aspects thereof) of the present invention. The computer is caused to function as at least a part of the first recording means, the second recording means, the closing means, and the securing means.

[0052] According to the first computer program of the present invention, the computer program can be read into a computer and executed from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk that stores the computer program. Alternatively, if the computer program is downloaded to a computer via communication means and then executed, the above-described information recording apparatus of the present invention can be realized relatively easily.

[0053] Incidentally, the first computer program of the present invention can also adopt various aspects corresponding to the various aspects that can be adopted by the information recording apparatus of the present invention described above.

[0054] A second computer program of the present invention is a computer program for reproduction control for controlling a computer provided with the above-described information reproduction apparatus of the present invention (including various aspects thereof), A computer is caused to function as at least a part of the acquisition means and the reproduction means.

[0055] In order to solve the above-described problem, according to the second computer program of the present invention, from the recording medium such as ROM, CD-ROM, DVD-ROM, and hard disk storing the computer program, the computer If the program is read into the computer and executed, or if the computer program is downloaded to the computer via communication means and then executed, the above-described information reproducing apparatus of the present invention can be realized relatively easily. .

[0056] Incidentally, in response to various aspects that can be adopted by the information reproducing apparatus of the present invention described above, the first of the present invention. Two computer programs can also take various forms.

In order to solve the above problems, a first computer program product in a computer-readable medium is obtained by a computer provided with the above-described information recording apparatus (including various aspects thereof) of the present invention. An executable program instruction is clearly embodied, and the converter is caused to function as at least a part of the first recording means, the second recording means, the closing means, and the securing means.

[0058] In order to solve the above problems, a second computer program product in a computer-readable medium is obtained by a computer provided with the above-described information reproducing apparatus of the present invention (including various aspects thereof). Executable program instructions are clearly embodied, and the converter functions as at least a part of the acquisition unit and the reproduction unit.

[0059] According to the first or second computer program product of the present invention, the computer program product is stored in a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk that stores the computer program product. If read, or if the computer program product, which is a transmission wave, for example, is downloaded to a computer via communication means, the above-described information recording apparatus or information reproducing 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 the information recording apparatus or information reproducing apparatus of the present invention described above.

[0060] (Information recording medium)

In order to solve the above-mentioned problems, an information recording medium of the present invention is used for data area for recording recording data, management of differentials generated in the data area, and management of recording of the recording data. A first management area for recording management data to be recorded, and an area indicating a position of a second management area for recording the management data after the recording data of a predetermined unit is closed A pointer area for recording position data is further provided.

[0061] According to the information recording medium of the present invention, the recording data is recorded in the data area. Management data is recorded in the first management area following or in parallel with the recording of the recording data. At this time, a description of a predetermined unit (for example, a fixed size or a size desired by the user). After the recording data is recorded in the data area, the recording data is closed. As a result, recording of the recording data on the information recording medium can be stopped at any time, and the recording data recorded on the information recording medium can be reproduced by the information reproducing apparatus. Even after the closing process is performed, the recording data can be further recorded in the data area.

In the present invention, in particular, in the pointer area, area position data indicating the position of the second management area where the management data is recorded after the close process is performed is recorded. Accordingly, when the second management area is secured as described above by performing the close process, area position data indicating the position of the secured second management area is recorded in the pointer area. Thus, after the close process is performed, the management data is recorded in the second management area or recorded in the second management area by referring to the area position data recorded in the pointer area. Management data can be acquired. Therefore, until the close process is performed, the recording data is recorded while the management data is recorded in the first management area, and the recorded data is reproduced by referring to the management data recorded in the first management area. Is done. On the other hand, after the close process is performed, the recording data is recorded while the management data is recorded in the second management area whose position is specified by the area position data, and is recorded in the second management area. The recorded data is reproduced by referring to the management data.

[0063] Thus, according to the information recording medium of the present invention, similarly to the information recording apparatus of the present invention described above, after the close process is performed, the information recording medium is preferably recorded on the information recording medium. As long as data can be recorded and the recorded data is recorded on the information recording medium, each of the existing information reproducing apparatus and information reproducing apparatus corresponding to the information recording medium! It can reproduce suitably.

[0064] In one aspect of the information recording medium of the present invention, the pointer area is included in at least one of the first management area and the second management area.

[0065] According to this aspect, the area position data can be preferably acquired, and as a result, the position of the second management area can be preferably recognized. As a result, management data can be suitably recorded in the second management area. [0066] According to another aspect of the information recording medium of the present invention, the number of times the close process is performed is

A plurality of the second management areas are provided.

[0067] According to this aspect, since a plurality of second management areas are newly reserved in accordance with the closing process, so to speak, management data is preferably used in the second management area appropriately reserved in accordance with the recording of the recording data. Can be recorded.

[0068] In another aspect of the information recording medium of the present invention, the second management area is included in a buffer area created following the recording data of the predetermined unit in which the closing process is performed.

[0069] According to this aspect, the second management area is included in a buffer area such as a border-in area. For this reason, the management data can be suitably recorded in the second management area located in the vicinity of the area where the recording data is recorded in accordance with the recording of the recording data.

[0070] In another aspect of the information recording medium of the present invention, the information recording medium has a disc shape, and the first management area is provided on a relatively inner peripheral side of the information recording medium. The second management area is provided on the relatively outer peripheral side of the information recording medium.

[0071] According to this aspect, even if the information recording medium is loaded into an existing information reproducing apparatus, in order to read or acquire the management data, the information recording medium is arranged on the outer circumference side (that is, the recording data There will be little or no access to the unrecorded part). As a result, there is almost no or no malfunction of the existing information reproducing apparatus.

[0072] In the aspect of the information recording medium in which the second management area is provided on the relatively outer peripheral side of the information recording medium as described above, the data area is provided on the outer peripheral side of the first management area, The second management area may be provided on the outer peripheral side of the data area.

With this configuration, since the second management area is secured on the outer periphery side of the data area, in the existing information reproducing apparatus that recognizes the recorded data within the range in which the close process is performed. Cannot recognize the second management area. Therefore, even when the information recording medium is loaded into an existing information reproducing apparatus, in order to read or acquire the management data, the information recording medium is not recorded on the outer peripheral side (that is, the recorded data is not recorded). Little or no access to any unrecorded part). In particular, this causes little or no malfunction of existing information reproducing devices.

[0074] According to another aspect of the information recording medium of the present invention, the management data should be recorded or recorded at the position where the differential occurs, the position data indicating the position where the differential occurs on the data area. And at least one of evacuation data which is the recording data and evacuation position data indicating a position where the evacuation data is recorded.

[0075] According to this aspect, it is possible to suitably perform differential management even after performing the closing process.

In another aspect of the information recording medium of the present invention, the management data includes calibration data for calibrating power when recording the recording data.

[0077] According to this aspect, it is possible to suitably calibrate the power when recording the recording data even after performing the closing process.

[0078] These effects and other advantages of the present invention will become more apparent from the embodiments described below.

[0079] As described above, the information recording apparatus of the present invention includes the first recording means, the second recording means, the close means, and the securing means. The information recording method of the present invention includes a first recording step, a second recording step, a closing step, and a securing step. Therefore, even after the closing process is performed, the recording data can be suitably recorded, and any recording data recorded by the information recording apparatus can be used for the existing information reproducing apparatus and the information recording medium. Each of the information reproducing apparatuses can reproduce suitably.

[0080] The information reproducing apparatus of the present invention includes an obtaining unit and a reproducing unit. The information reproduction method of the present invention includes an acquisition step and a reproduction step. Therefore, it is possible to preferably reproduce the recorded data even after performing the closing process.

[0081] The information recording medium of the present invention includes a data area, a first management area, and a pointer area. Therefore, even after the close process is performed, the recorded data can be suitably recorded on the information recording medium, and if the recorded data is recorded on the information recording medium, the existing information is reproduced. Information reproducing apparatus corresponding to the apparatus and the information recording medium Each can be suitably played back.

Brief Description of Drawings

[FIG. 1] The structure of an optical disc having a plurality of areas on the upper side is shown in a schematic plan view, and the area structure in the radial direction is shown on the lower side in association with a conceptual diagram.

FIG. 2 is a data structure diagram conceptually showing the data structure of the lead-in area and lead-out area of the optical disc in the example.

[Fig. 3] Temporary Disc Definition Structure (TDDS) recorded in the Temporary Disc Management Area (TDM A temporary Disc Management Area) provided in the lead-in area of the optical disc according to this embodiment. FIG.

[FIG. 4] conceptually shows a data structure of a temporary defect list (TDFL) recorded in a temporary disc management rear provided in the lead-in area of the optical disc according to the embodiment. It is a data structure figure.

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

FIG. 6 is a flowchart conceptually showing a flow of operations of the information recording / reproducing apparatus in the example.

FIG. 7 is a cross-sectional view of a new optical disc and a graph showing the tracking polarity.

FIG. 8 is a cross-sectional view of an existing optical disc and a graph showing the tracking polarity.

FIG. 9 is a flow chart conceptually showing a data recording flow in step S 109 of FIG.

FIG. 10 is a flow chart conceptually showing a flow of data reproduction in step S 111 of FIG.

FIG. 11 is a flowchart conceptually showing a border close process in step S 114 of FIG. 6.

FIG. 12 is a data structure diagram conceptually showing the data structure of the optical disc before the border close process is performed.

[Fig.13] Conceptually shows the data structure of the optical disc after the border close process is performed. It is a data structure diagram.

FIG. 14 is a data structure diagram conceptually showing the data structure of disk management information updated when border closing processing is performed.

FIG. 15 is a flowchart conceptually showing a flow of operations of the information recording / reproducing apparatus when it is determined in step S107 in FIG. 6 that border closing processing has already been performed.

FIG. 16 is a flowchart conceptually showing a border close process in step S 503 of FIG. 15.

FIG. 17 is a flowchart conceptually showing a flow of data recording processing in Step S 501 of FIG. 15.

FIG. 18 is a flowchart conceptually showing a flow of the data reproduction processing in Step S 502 of FIG.

FIG. 19 is a data structure diagram conceptually showing the data structure of the optical disc after the border close process is performed.

Explanation of symbols

100 optical disc

104 Lead-in area

106 Data area

108 Lead-out area

114, 134 OPC area

115, 135 TDMA

119, 139 ISA

190 TDDS

191 TDFL

200 Information recording and playback device

352 optical pickup

353 Signal recording and playback means

354, 359 CPU BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the best mode for carrying out the present invention will be described in each embodiment in order with reference to the drawings.

[0085] (Information recording medium)

First, with reference to FIG. 1 to FIG. 4, an explanation will be given on an optical disc as an embodiment according to the information recording medium of the present invention. Here, FIG. 1 is a schematic plan view showing the structure of an optical disk having a plurality of areas on the upper side, and the area structure in the radial direction is shown on the lower side in association with the schematic diagram. FIG. 2 is a data structure diagram conceptually showing the data structure of the lead area and lead-out area of the optical disc according to the present embodiment. FIG. 3 is a temporary diagram provided in the lead-in area of the optical disc according to the present embodiment. FIG. 4 is a data structure diagram conceptually showing temporary disc definition structure information (TDDS) recorded in the disc management area (TDM A temporary Disc Management Area). The data structure of a temporary differential list (TDFL) recorded in the temporary disc management area provided in the lead-in area of the optical disc is conceptually shown. It is a data structure diagram.

[0086] As shown in FIG. 1, the optical disc 100 can be recorded by various recording methods such as a magneto-optical method and a phase change method, which can be recorded (written) a plurality of times or only once. As with the DVD, a lead-in area 104, a data area 106, and a read-out area 108 are provided on the recording surface of the disk body having a diameter of about 12 cm with the center hole 102 as the center and the inner peripheral force toward the outer periphery. In each area, for example, groove tracks and land tracks are alternately provided spirally or concentrically around the center hole 102, and this groove track may be wobbled. Prepits may be formed on one or both tracks. The present invention is not particularly limited to the optical disc having such three areas. For example, lead-in area 10

Even if 4 and the lead-out area 108 do not exist, the file structure described below can be constructed. Further, the lead-in area 104 and the lead-out area 108 may be further subdivided.

[0087] As shown in Fig. 2 (a), the lead-in area 104 has a BCA (Burst Cutting Area). (Cutting area) 111, CDZ (Control Data Zone) 112, DMA (Disc Management Area) (# 2) 113, OPC (Optimum Power Control) area ( # 0) 114, TDMA (# 0) 115, DMA (# 1) 116, ACA (Access Control Area) 117, Buffer Zone 118 and force Inner side to outer side It is provided toward

[0088] BCAlll is an area for recording various identification data for identifying the optical disc 100 including, for example, the manufacturing number of the optical disc 100 and the like. In particular, the various identification data are recorded by a barcode-like cutting pattern formed on the recording surface of the optical disc 100 by laser light.

The CDZ 112 is an area for recording initial management information of the optical disc 100.

[0090] The OPC area (# 0) 114 constitutes one specific example of the "first management area" of the present invention, and the optimum laser power detection (ie, laser performance) when recording data on the optical disc 100 is performed. This is the area used for the so-called OPC process. More specifically, after the trial writing of the OPC pattern constituting one specific example of the “management data” according to the present invention is completed, the trial written OPC pattern is reproduced, and the reproduced OPC pattern is sequentially sampled. Thus, the optimum laser power is detected.

[0091] TDMA (# 0) 115 constitutes a specific example of the "first management area" of the present invention, and temporarily (more specifically, disc management information including TD DS190 and TDFL191). This is an area for recording (until the border close process is performed). More specifically, the information is sequentially recorded in the disc management information power TDMA (# 0) 115 that is updated according to data recording and reproduction.

Here, disk management information including TDDS 190 and TDFL 191, which constitute one specific example of the “management data” of the present invention, will be specifically described.

As shown in FIG. 3, the TDDS 190 constitutes one specific example of “management data” of the present invention, and includes TDDS identification information including an identification number for identifying the TDDS 190, and a lead-in area 104 And basic data such as the data area 106, lead-out area 108, ISA (# 0) 119, etc. TDFL191's information about the recording method such as the formula, TDMA size information indicating the size of TDMA (# 0) 115, etc., OPC area information indicating the position and size of the OPC area (# 0) 113, etc. TDFL position information indicating position, size, etc., and track information and session information, etc. when sequential recording method is adopted, and recorded data is recorded when random recording method is adopted Information related to the recording mode and information related to the area where recording data is not recorded, and various other information.

As shown in FIG. 4, the TDFL 191 constitutes a specific example of “management data” of the present invention, and includes a differential address indicating the position of the differential on the optical disc 100, and the data Data to be recorded or recorded at the position where the event is present (such data constitutes one specific example of “management data” of the present invention, and is hereinafter referred to as “evacuation data” as appropriate). It includes an alternative recording address indicating a position in the recorded ISA (# 0) 119 (further, ISA (Ex #n) described later), and various other information. When there are a plurality of differentials in the data area 106, the TDFL 191 includes a plurality of differential addresses corresponding to these differentials and a plurality of alternative recording addresses.

[0095] From the viewpoint of ensuring their reliable recording and reproduction, it is preferable that Ding 003190 and Ding 0 1 ^ 191 etc. are repeatedly recorded twice in TDMA (# 0) 115. However, even if it is not recorded twice, even if it is recorded once or recorded three times or more, TDDS190, TDFL 191 and the like can be appropriately recorded and reproduced.

[0096] Referring back to FIG. 2, DMA (# 1) 116 and DMA (# 2) 113 are areas for recording disk management information including TDDS and TDFL when border closing processing is performed. is there. After the border close process is performed, the information recording / reproducing apparatus described later uses the DMA (# 1) 116 or DMA (# 2) 113 (or the DMA (# 3) 122 or DMA (# 4) 123 described later. ) Is recorded, and the data recorded in the data area 106 is reproduced.

[0097] ACA 117 is an area for recording access control information that defines restrictions on the access area on optical disc 100.

[0098] The buffer zone 118 has a margin between the CDZ 112 and the DMA (# 2) 113. Area. By taking such a margin, it is possible to separate the pre-formed CDZ112 and DMA (# 2) 113 and to access both areas reliably.

[0099] At the boundary between the lead-in area 104 and the data area 106, an ISA (# 0) (Inner Spare Area) 119 constituting one specific example of the "first management area" of the present invention is provided. It is In the ISA (# 0) 119, the save data is recorded as described above.

[0100] In the lead-out area 108, a DMA (# 3) 122, a DMA (# 4) 123, a buffer zone 124, and a force are provided from the inner circumference side toward the outer circumference side.

DMA (# 3) 122 and DMA (# 4) 123 are areas for recording disk management information including TDDS, TDFL, and the like when border close processing is performed. After the border-close process has been performed, the information recording / reproducing apparatus described later will use DMA (# 3) 122 or DMA (# 4) 123 (or the above-mentioned DMA (# 1) 116 or DMA (# 2). 113) The disc management information recorded in 113) is acquired, and the data recorded in the data area 106 etc. is reproduced.

[0102] The buffer zone 124 is an area for taking a margin between the lead-out area 108 and the outer peripheral area. By taking such a margin, it is possible to prevent the optical pickup force that is matched to the lead-out area 108 from accidentally jumping out to the outer peripheral side of the lead-out area 108.

[0103] (Information recording / playback device)

(1) Basic configuration

Next, the basic configuration of an information recording / reproducing apparatus as an embodiment of the information recording apparatus and the information reproducing apparatus of the present invention will be described with reference to FIG. FIG. 5 is a block diagram conceptually showing the basic structure of the information recording / reproducing apparatus in the example. Note that the information recording / reproducing apparatus has a function of recording data on the optical disc 100 and a function of reproducing data recorded on the optical disc 100.

As shown in FIG. 5, the information recording / reproducing apparatus 200 includes a disc drive 301 on which the optical disc 100 is actually loaded and data is recorded and reproduced, and data recording and recording on the disc drive 301. And a host computer 302 such as a personal computer for controlling reproduction! The disk drive 301 includes an optical disk 100, a spinner motor 351, an optical pickup 352, a signal recording / reproducing means 353, a CPU (drive control means) 354, a memory 355, a data input / output control means 306, and a bus 357. Has been. The host computer 302 includes a CPU 359, a memory 360, operation / display control means 307, operation buttons 310, a display panel 311, and data input / output control means 308.

The spindle motor 351 rotates and stops the optical disc 100, and operates when accessing the optical disc 100. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 100 at a predetermined speed while receiving spindle servo from a servo unit (not shown) or the like.

The optical pickup 352 includes, for example, a semiconductor laser element, a collimator lens, an objective lens, and the like in order to perform recording / reproduction on the optical disc 100. More specifically, the optical pickup 352 irradiates the optical disk 100 with a light beam such as a laser beam at a first power as read light during reproduction, and at a second level as write light during recording. Irradiate while modulating.

The signal recording / reproducing means 353 constitutes specific examples of “first recording means”, “second recording means”, “acquiring means”, and “reproducing means” of the present invention. By controlling the optical pickup 100, the optical disc 100 is recorded and reproduced. More specifically, the signal recording / reproducing means 353 includes, for example, a laser diode driver (LD driver), a head amplifier, and the like. The laser diode driver generates a driving pulse, for example, and drives a semiconductor laser element provided in the optical pickup 352. The head amplifier amplifies the output signal of the optical pickup 352, that is, the reflected light of the light beam, and outputs the amplified signal.

[0109] The memory 355 includes general data processing and OPC processing in the disk drive 301 such as a buffer area for recording / reproducing data and an area used as an intermediate buffer when converted to data used by the signal recording / reproducing means 353. Used in. In addition, the memory 355 is a program for operating as a recorder device, that is, a ROM area in which firmware is stored, a buffer for temporarily storing recording / playback data, and variables necessary for the operation of the firmware program, etc. RAM area where is stored. [0110] The CPU (drive control means) 354 constitutes one specific example of the "close means", "reserving means" and "control means" of the present invention, and includes a signal recording / reproducing means 353, a memory 355, The entire disk drive 301 is controlled by instructing various control means connected via the bus 357. Normally, software or firmware for operating the CPU 354 is stored in the memory 355.

The data input / output control means 306 controls external data input / output to / from the disk drive 301, and stores and retrieves data from / in the data buffer on the memory 355. A drive control command issued from the external host computer 302 connected to the disk drive 301 via an interface such as SCSI or ATAPI is transmitted to the CPU 354 via the data input / output control means 306. Similarly, recording / reproduction data is exchanged with the host computer 302 via the data input / output control means 306.

Operation Z display control means 307 is for receiving and displaying an operation instruction for the host computer 302, and transmits an instruction by the operation button 310 such as recording or reproduction to the CPU 359, for example. Based on the instruction information from the operation Z display control means 307, the CPU 359 transmits a control command (command) to the information recording / reproducing apparatus 200 via the data input / output means 308 to control the entire disk drive 301. . Similarly, the CPU 359 can send a command requesting the disk drive 301 to send the operating status to the host. As a result, the operating state of the disk drive 301 during recording and playback can be grasped, so the CPU 359 displays the operating state of the disk drive 301 on the display panel 311 such as a fluorescent tube or LCD via the operation / display control means 307. Can be output.

[0113] The memory 360 is an internal storage device used by the host computer 302. 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. The RAM area that stores the necessary variables is also configured. Also, it is not shown in the figure via the data input / output control means 308, and may be connected to an external storage device such as a node disk.

One specific example of using the disk drive 301 and the host computer 302 in combination as described above is a household device such as a recorder device that records and reproduces video. This recorder device records video signals from broadcast receiver tuners and external connection jacks on a disc, A device that outputs a video signal reproduced from a disc to an external display device such as a television. The program stored in the memory 360 is executed by the CPU 359 to operate as a recorder device. In another specific example, the disk drive 301 is a disk drive (hereinafter referred to as a drive as appropriate), and the host computer 302 is a personal computer or a workstation. The host computer 302 such as a personal computer is connected to the drive via data input / output control means 306 and 308 such as SCSI and ATAPI, and the application power such as writing software installed in the host computer 302 is controlled. To do.

[0115] (2) Principle of operation

Next, with reference to FIG. 6 to FIG. 18, the operation principle of the information recording / reproducing apparatus 200 according to the present embodiment will be described. Here, with reference to FIG. 6, while explaining the overall flow of the operation principle of the information recording / reproducing apparatus 200 according to the present embodiment, a more detailed explanation is added with reference to FIGS. 7 to 18 as appropriate. To go. FIG. 6 is a flowchart conceptually showing a flow of operations of the information recording / reproducing apparatus 200 in this example.

As shown in FIG. 6, first, the optical disc 100 is loaded onto the information recording / reproducing apparatus 200 (step S101). Subsequently, under the control of the CPU 354 or 359, tracking polarity information indicating the tracking polarity (that is, the signal polarity of the tracking signal) of the optical disc 100 is acquired (step S102).

In this example, in addition to the existing version of Blu-ray Disc (hereinafter referred to as “existing optical disc” as appropriate) using a phase change film as a recording film, a dye film is recorded. A new version of Blu-ray Disc used for the film (hereinafter referred to as “new optical disc” as appropriate) is adopted as a specific example of the optical disc 100. The difference between the tracking polarity of the new optical disc 100 and the tracking polarity of the existing optical disc 100 will be described in more detail with reference to FIGS. FIG. 7 is a cross-sectional view of the new optical disc 100 and a graph showing the tracking polarity, and FIG. 8 is a cross-sectional view of the existing optical disc 100 and a graph showing the tracking polarity.

[0118] As shown in the upper part of FIG. 7, the new optical disc 100 has a so-called in-groove structure (In

-Groove), and the land track LT has a convex structure with respect to the groove track GT. Has a structure. In the new optical disc 100, a partial force S on which the groove track GT is formed S is formed as a land track LT-shaped substrate, and a dye is applied on the substrate using a spin coating method or the like. Thus, a recording film is formed. That is, the recording film is formed by entering the concave portion of the color element groove track GT.

By irradiating such a new optical disc 100 with the laser beam LB, a tracking signal as shown in the lower part of FIG. 7 can be obtained.

[0120] On the other hand, as shown in the upper part of FIG. 8, the existing optical disc 100 employs a so-called on-groove structure, and the groove track GT has a convex structure with respect to the land track LT. Have. By irradiating the existing optical disc 100 with the laser beam LB, a tracking signal as shown in the lower part of FIG. 8 can be acquired.

[0121] The tracking of the new optical disc 100 is divided so that the tracking signal of the new optical disc 100 shown in the lower part of FIG. 7 is compared with the tracking signal of the existing optical disc 100 shown in the lower part of FIG. The polarity and the tracking polarity of the existing optical disc 100 have a reversal relationship. Therefore, when the optical disc 100 is loaded, the information recording / reproducing apparatus 200 cannot distinguish whether the loaded optical disc 100 is a new optical disc 100 or an existing optical disc 100. As a result, there is a possibility that suitable tracking processing cannot be performed on the loaded optical disc 100. Therefore, in this embodiment, tracking polarity information of the loaded optical disc 100 is acquired in step S102 of FIG.

[0122] The tracking polarity information may be configured to be acquired from the BCA 111 that can read the data recorded therein without performing the tracking process. In this case, it is necessary to record the tracking polarity information in the B CA111 in advance.

Although not shown in FIG. 7 and FIG. 8, when attention is paid to the signal level of the tracking signal, the signal level of the new optical disc 100 and the existing level are related to the signal level in the recorded data portion. There is no significant difference between the signal level on the optical disc 100. However, the signal level of the new optical disc 100 is much higher than the signal level of the existing optical disc 100 with respect to the signal level in the unrecorded portion. For this reason, in an information recording / reproducing apparatus that does not support the new optical disc 100, Since the push-pull signal in the unrecorded part cannot be detected properly (in other words, the detected push-pull signal exceeds the detection allowable range), the optical pickup is in the unrecorded part.

If 352 moves, it may cause malfunction. The “information recording / reproducing device not compatible with the new optical disc 100” here means that the tracking polarity of the new optical disc 100 is reversed with respect to the tracking polarity of the existing optical disc 100. Cannot be recognized, and the push-pull signal of the unrecorded part of the new optical disc 100 cannot be detected suitably.

[0124] Again in FIG. 6, under the control of the CPU 354 or 359, based on the tracking polarity information acquired in step S102, the tracking polarity when the information recording / reproducing apparatus 200 performs the tracking process is set to the default. It is determined whether or not the polarity (for example, tracking polarity corresponding to the existing optical disc 100) force should also be reversed (step S103).

[0125] If it is determined in step S103 that the tracking polarity should be reversed (step S103: Yes), the tracking polarity is set so that the default polarity force is also reversed (step S104). ).

On the other hand, if it is determined in step S103 that the tracking polarity should not be reversed (step S103: No), the tracking polarity is set to the default polarity (step S105).

[0127] In addition to or instead of acquiring tracking polarity information directly in BCA111, the tracking polarity when tracking processing by information recording / reproducing apparatus 200 is set to the default polarity, and then recorded in CDZ112. It may be configured to determine whether the tracking polarity is a force to reverse the default polarity force by reading the recorded data. Specifically, if the data recorded on the CDZ112 can be read, the tracking polarity of the loaded optical disc 100 is the default polarity (that is, the tracking polarity is set to the default polarity). Is determined. On the other hand, if the data recorded on the CDZ112 cannot be read, the tracking polarity of the loaded optical disc 100 is opposite to the default polarity (that is, the tracking polarity is changed to the default polarity). Set the force to reverse It may be configured to be determined as).

Subsequently, after the above-described disk management information is acquired (step S 106), under the control of the CPU 354 or 359, a border close process has already been performed on the loaded optical disk 100. It is determined whether or not (step S107). That is, it is determined whether or not the border closing process has been performed even once on the loaded optical disc 100.

[0129] As a result of the determination in step S107, if it is determined that the border close process has already been performed (the border close process has been performed once or more) (step S 107: Yes), the flowchart of FIG. Is performed. The processing shown in the flowchart of FIG. 15 will be described in detail later.

[0130] On the other hand, as a result of the determination in step S107, the border closing process is still performed! It is determined whether or not to perform recording (step S108). This determination is made based on whether or not the user of the information recording / reproducing apparatus 200 instructs data recording.

[0131] If it is determined in step S108 that data is to be recorded (step S108: Yes), data recording processing is performed under the control of the CPU 354 or 359 (step S109). .

Here, with reference to FIG. 9, the “data recording process” in step S109 of FIG. 6 will be described more specifically. FIG. 9 is a flowchart conceptually showing a data recording flow in step S109 in FIG.

[0133] As shown in FIG. 9, first, an address indicating the position on the data area 106 where data is to be recorded (hereinafter referred to as "recording target address" as appropriate) is a diff that the TDFL191 indicates. It is determined whether it is included in the address (step S201).

[0134] As a result of the determination in step S201, when it is determined that the recording target address is included in the differential address (step S201: Yes), there is a differential in the position indicated by the recording target address. It is recognized. Accordingly, the data to be recorded is recorded as saved data in the ISA (# 0) 119 instead of the position indicated by the recording target address (step S202). Subsequently, TDFL191 is updated according to the data recording to ISA (# 0) 119. Step S203). Specifically, the recording target address is newly registered in the TDFL 191 as the differential address, and the address in the ISA (# 0) 119 where the data is recorded is registered as the alternative recording address.

[0135] On the other hand, if it is determined that the recording target address is not included in the differential address as a result of the determination in step S201 (step S201: No), there is a differential in the position indicated by the recording target address. Not recognized. Accordingly, data is recorded at the position indicated by the recording target address (step S204). Thereafter, a verify process for reading the recorded data is performed, and it is determined whether or not a verify error (that is, a read error) has occurred (step S205).

As a result of the determination in step S205, if it is determined that a verify error has occurred (NO in step S205), the data recording process is terminated.

On the other hand, if it is determined as a result of the determination in step S205 that a verify error has occurred (step S205: Yes), it is recognized that a new diffet has occurred at the position where the data was recorded. Accordingly, the data recorded in step S204 is recorded as evacuation data in ISA (# 0) 119 (step S202), and TDFL191 is updated (step S203).

[0138] In FIG. 6 again, if it is determined in step S108 that data is not to be recorded (step S108: No), the data recorded on optical disc 100 is subsequently reproduced. Is determined (step S110). This determination is made based on whether or not the user of the information recording / reproducing apparatus 200 instructs data reproduction.

[0139] As a result of the determination in step S110, if it is determined that data is to be reproduced (step S110: Yes), data reproduction processing is performed under the control of the CPU 354 or 359 (step Sl ll).

Here, with reference to FIG. 10, the “data reproduction process” in step S 111 of FIG. 6 will be described more specifically. FIG. 10 is a flowchart conceptually showing a flow of data reproduction in step S111 of FIG.

[0141] As shown in FIG. 10, first, an address indicating the position on the data area 106 where data is currently being reproduced (hereinafter referred to as "reproduction target address" as appropriate) It is determined whether or not it is included in the indicated differential address (step S301).

[0142] As a result of the determination in step S301, if it is determined that the playback target address is included in the differential address (step S301: Yes), there is a differential at the position indicated by the playback target address. The data to be recorded or recorded at the position indicated by the reproduction target address is recognized as being recorded as saved data in the ISA (# 0) 119. Therefore, the data recorded in ISA (# 0) 119! Is reproduced (step S302).

[0143] On the other hand, as a result of the determination in step S301, if it is determined that the playback target address is not included in the differential address (step S301: No), the positional force data indicated by the playback target address is subsequently displayed. It is determined whether or not there is an error in the read data (step S303).

[0144] If it is determined that an error has occurred in the read data as a result of the determination in step S303 (step S303: Yes), a new diffeat is recorded after the data is recorded at the position indicated by the reproduction target address. It is recognized that it has occurred. Accordingly, the position indicated by the reproduction target address is registered in the TDFL 191 as a differential address, and the TDFL 191 is recorded in the TDMA (# 0) 115 (step S304). If possible, the data recorded at the position indicated by the playback target address is recorded in ISA (# 0) 119 as saved data, and the address of ISA (# 0) 119 that recorded the data is substituted. The recording address is registered in TDFL191 and TDFL191 is set to TDMA (# 0) 115 (step S304).

On the other hand, as a result of the determination in step S303, when it is determined that no error has occurred in the read data (step S303: No), the read data is reproduced (step S305).

[0146] In FIG. 6 again, if it is determined that the data is not to be reproduced as a result of the determination in step S110 (step S110: No), then, under the control of the CPU 354 or 359, the It is determined whether or not to perform the rose process (step S112).

[0147] If it is determined that the border close process is to be performed as a result of the determination in step S112 (step S112: Yes), the TDDS 190 and TDFL 191 associated with the border close process are controlled under the control of the CPU 354 or 359. The included disk management information is updated (step S 11 3). Thereafter, the CPU 354 or 359 constituting one specific example of the “closing means” of the present invention. Under the control, border close processing is performed (step SI 14). Then, go to Step S115.

Here, with reference to FIG. 11, the “border close process” in step S 114 of FIG. 6 will be described more specifically. FIG. 11 is a flowchart conceptually showing a flow of the border close process in step S114 of FIG.

[0149] As shown in FIG. 11, necessary information is recorded in the lead-in area 104 (step S401). For example, the disk management information and the like updated in step S 113 in FIG. 6 are recorded in TDMA (# 0) 1 15. The latest updated disk management information is copied to DMA (# 1) 1 16, DMA (# 2) 113, DMA (# 3) 122, and DMA (# 4) 123, and dummy data is recorded in the unrecorded part. (For example, “OOh” data, etc.) is recorded. After that, dummy data (eg "OOh" data) etc.) is recorded in the unrecorded part of the OPC area (# 0) 1 14 (step S402), and dummy data is recorded in the unrecorded part of TDMA (# 0) 115. Data or the like is recorded (step S403), and dummy data or the like is recorded in the unrecorded portion of ISA (# 0) 119 (step S404). At the same time, dummy data or the like is recorded in an unrecorded portion of the lead-in area 104 and an unrecorded portion of the lead-out area 108.

[0150] Subsequently, a border out area is generated following the end of the data recorded in the data area 106 (step S405), and a border one in area is generated following the end of the border out area. (Step S406).

[0151] The border-out area has the same function as the buffer zone 118 and the like described above, and data subjected to the border close process (that is, data recorded on the inner circumference side from the border-out area) Tracking is matched to the optical pickup, which prevents it from accidentally jumping out to the outer periphery of the border-out area.

[0152] In the border-in area, when data is newly recorded after performing the border close process, various information necessary for recording the data is recorded.

In this embodiment, in particular, in the OPC process after the border close process is performed in the border-in area under the control of the CPU 354 or 359 constituting one specific example of the “reserving means” of the present invention. The OPC area (Ex # 1) to be used is secured (step S407), and the TDMA (used to record the disc management information after the border close process has been performed ( Ex # 1) is secured (step S408), and ISA (Ex # 1) used for defect management after border close processing is secured (step S409). The newly reserved OPC area (Ex # 1), TDMA (Ex # 1), IS A (Ex # 1), etc. constitute a specific example of the “second management area” of the present invention.

[0154] After that, the latest (ie, most recently updated) disk management information recorded in TDMA (# 0) 115 (ie, the latest TDDS190 and the latest TDFL191) is the newly reserved TDMA. Recorded in (Ex # 1) (that is, copied) (Step S410), and further saved data force recorded in ISA (# 0) Recorded in newly secured ISA (Ex # 1) (that is, copied) (Step S411).

Here, with reference to FIG. 12 to FIG. 14, the data structure of the optical disc 100 and the updated disc management information when this border close process is performed will be described in more detail. FIG. 12 is a data structure diagram conceptually showing the data structure of the optical disc 100 before the border close process is performed. FIG. 13 shows the data structure of the optical disc 100 after the border close process is performed. FIG. 14 is a data structure diagram conceptually showing the data structure of the disk management information updated when the border close process is performed.

As shown in FIG. 12, before the border close process is performed, the OPC process is performed using the OPC area (# 0) 1 14, and the disc management information is recorded in the TDMA (# 0) 115. The data to be recorded or recorded at the position where the differential exists is recorded in the ISA (# 0) 119 as saved data. In addition, data is recorded from the inner circumference side to the outer circumference side of the data area 106. In FIG. 12, the portion where data is recorded is indicated by hatching.

When the border close process is performed on the optical disc 100 shown in FIG. 12, as shown in FIG. 13, the unrecorded portion in the area on the inner circumference side than the data recorded in the data area 106 is Dummy data (shown as shaded in FIG. 13) is recorded. In the newly generated border-in area, an OPC area (Ex # 1) 134, TDMA (Ex # 1) 135, and ISA (Ex # 1) 139 are secured. Furthermore, in FIG. 13, ACA (Ex # 1) 137 used for recording access control information after border closing processing is also confirmed. It is kept.

[0158] In addition, the latest disk management information recorded in TDMA (# 0) 115 is newly copied to TDMA (Ex # 1) 135 and recorded in ISA (# 0) 119 Data copy to newly reserved ISA (Ex # 1) 139.

At this time, in addition to the information shown in FIGS. 3 and 4, the TD DS 190 included in the disk management information updated in step S113 of FIG. Newly reserved OPC area (Ex # 1) 134, TDMA (Ex # 1) 135, ISA (Ex # 1) 139, PAC (Ex # 1) ) Information indicating the start address, size, etc. of each of 137 is newly included. The disk management information including the new information is updated in step S113 in FIG. 6 and recorded in TDMA (# 0) 115, and then TDMA (Ex # 1) 135 in step S410 in FIG. To be copied.

[0160] In FIG. 6 again, when it is determined that the border close process is not performed as a result of the determination in step S112 (step S112: No), subsequently, the optical disk 100 is ejected from the information recording / reproducing apparatus 200. It is determined whether or not the force is applied (step S115). This determination is made based on whether or not the user of the information recording / reproducing apparatus 200 is instructed to eject the optical disc 100.

If it is determined in step S115 that the optical disc 100 is to be ejected (step S115: Yes), the optical disc 100 is ejected (step S116), and the operation is terminated.

On the other hand, if it is determined in step S115 that the optical disc 100 is not to be ejected (step S115: No), the process returns to step S108 again, and the operations from step S108 to step S115 are repeated.

[0163] Next, with reference to FIG. 15, the operation of the information recording / reproducing apparatus 200 when it is determined in step S107 in FIG. 6 that the border close process has already been performed will be described. FIG. 15 is a flowchart conceptually showing an operation flow of the information recording / reproducing apparatus 200 when it is determined that the border closing process has already been performed in step S107 in FIG. 6!

[0164] As shown in FIG. 15, border close processing is performed in step S107 of FIG. The operation in the case where it is determined that it is determined is substantially the same as the operation from step S108 to step S116 in FIG. In this case, data recording processing (step S501), data reproduction processing

(Step S502) and Border Close Processing (Step S503), respectively. Data Recording Processing (Step S109), Data Reproduction Processing (Step S111), and Border Close Processing (Step S115) in Fig. 6 Slightly different from each other.

Hereinafter, with reference to FIGS. 16 to 18, the data recording process in step S501 in FIG. 15, the data reproduction process in step S502 in FIG. 15, and the step S50 in FIG.

The border close process in 3 will be described. Here, for convenience of explanation, the border close process in step S503 in FIG. 15 is described, and then the data recording process in step S501 in FIG. 15 and the data reproduction process in step S502 in FIG. 15 are described. Here, FIG. 16 is a flowchart conceptually showing a flow of the border close process in the step S503 of FIG. 15, FIG. ₁₇ is a flowchart conceptually showing a flow of recording processing of the data in step S501 of FIG. ₁₅ FIG. 18 is a flowchart conceptually showing a flow of the data reproduction processing in step S502 of FIG.

[0166] In the following, border close processing is performed n times (where n is an integer equal to or greater than 1).

The description will proceed assuming that the border close process has been performed n times when the determination in step S107 in FIG. 6 is performed.

[0167] As shown in Fig. 16, dummy data etc. is recorded in the unrecorded part of the OPC area (Ex #n) (step S802), and dummy data etc. is recorded in the unrecorded part of TDMA (Ex #n). Is recorded (step S803), and dummy data or the like is recorded in an unrecorded portion of ISA (Ex #n) (step S804). At this time, dummy data or the like is recorded in the unrecorded portions of the border area and the border out area generated in the data area 106 at the same time.

[0168] Subsequently, a border out area is generated following the end of the data recorded in the data area 106 (step S405), and a border one in area is generated following the end of the border out area. (Step S406).

[0169] After that, in the border-in area, an OPC area (Ex # n + 1) used for the OPC process after the n + 1st border close process is secured (step S807), and n + After TDMA (Ex # n + 1) used for recording disk management information after the first border close process is secured (step S808), n + after the first border close process is performed ISA (Ex # n + 1), which is used to manage the diffet, is secured (step S809). The newly reserved OPC area (Ex # n + 1), TDMA (Ex # n + 1), ISA (Ex # n + 1), etc. are the OPC areas (Ex # 1), TDMA (Ex # 1) and I Similar to SA (Ex # 1) and the like, it constitutes a specific example of the “second management area” of the present invention. The newly allocated OPC area (Ex # n + 1), TDMA (Ex # n + 1), and ISA (Ex # n + 1) location and size are included in the disk management information updated in step S113 in Fig. 15. Included in TDDS 190.

[0170] After that, the latest disk management information recorded in TDMA (Ex #n) is newly recorded (ie, copied) in TDMA (Ex # n + 1) (step S810), and Data saved in IS A (Ex # n) is recorded (ie, copied) in the newly secured ISA (Ex # n + 1) (step S811).

[0171] Thus, in this embodiment, a new OPC area is created each time the border close process is performed.

(Ex #n), TDMA (Ex #n), ISA (Ex #n), etc. Reserved in the newly generated border-in area. Specifically, after the first border close process, OPC (Ex # 1) area, TDMA (Ex # 1), ISA (Ex # 1), etc. are generated by the first border close process. Reserved in the border-in area and used until the first border closing process is performed and recorded in the latest TDMA (# 0) 115 to the latest disk management information and ISA (# 0). The saved data that has been recorded is copied to the newly secured TDMA (Ex # 1) or ISA (Ex # 1). After the second border close process is performed, the OPC (Ex # 2) area, TDMA (Ex # 2), ISA (Ex # 2), etc. are generated by the second border close process. The latest disk management information recorded in the TDMA (Ex # 1) and the evacuation data recorded in the ISA (Ex # 1), which are reserved until the second border close process is performed Taka Copied to newly reserved TDMA (Ex # 2) or ISA (Ex # 2). After the nth border close process is performed, the OPC (Ex # n) area, TDMA (Ex # n), ISA (Ex # n), etc. are generated by the border close process generated by the nth border close process. Recorded in the TDMA (Ex # n—1) that has been reserved in the memory and used until the nth border close process has been performed, and the latest disk management information and ISA (Ex # n—1) Recorded evacuation data power TDMA (Ex # n) is newly copied to ISA (Ex # n).

[0172] Next, the data recording process will be described.

As shown in FIG. 17, it is determined whether or not the recording target address is included in the differential address indicated by TDFL 191 (step S201).

[0174] As a result of the determination in step S201, if it is determined that the recording target address is included in the differential address (step S201: Yes), instead of the position indicated by the recording target address, ISA (Ex # n ) Is recorded (step S601). Subsequently, TDFL191 is updated in accordance with the data recording to ISA (Ex #n) (step S203). At this time, the position of ISA (Ex # n), TDMA (Ex # n), etc. can be easily recognized by referring to the TDDS (see Fig. 14) that is updated when the border closing process described above is performed. Can do.

[0175] On the other hand, if it is determined in step S201 that the recording target address is not included in the differential address (step S201: No), data is recorded at the position indicated by the recording target address ( Step S204). Thereafter, it is determined whether a verify error (that is, a read error) has occurred and whether or not the force is high (step S205).

As a result of the determination in step S205, if it is determined that no verify error has occurred (step S205: No), the data recording process is terminated.

[0177] On the other hand, if it is determined in step S205 that a verify error has occurred (step S205: Yes), the data recorded in step S204 is recorded in ISA (Ex #n). (Step S601), TDFL191 is updated (Step S203).

[0178] Note that the OPC process appropriately performed during the recording operation is also performed by recording the OPC pattern in the OPC area (Ex # n).

Next, data reproduction processing will be described.

As shown in FIG. 18, it is determined whether or not the reproduction target address is included in the differential address indicated by TDFL 191 (step S301).

[0181] As a result of the determination in step S301, the reproduction target address is included in the differential address. If it is determined (step S301: Yes), the data recorded in ISA (Ex # n) is reproduced (step S701).

[0182] On the other hand, as a result of the determination in step S301, if it is determined that the playback target address is not included in the differential address (step S301: No), subsequently, the positional force data indicated by the playback target address is stored. It is determined whether or not there is an error in the read data (step S303).

[0183] As a result of the determination in step S303, if it is determined that an error has occurred in the read data (step S303: Yes), the position indicated by the reproduction target address is registered in the TDFL191 as a differential address, and Record in TDFL19 ^ TDMA (Ex # n) (step S30 4). If possible, the data recorded at the position indicated by the playback target address is recorded in the ISA (Ex # n) and the address of the recorded ISA (Ex # n) is stored in the TDFL191 as an alternative recording address. Register and record in TDFL19 ^ TDMA (Ex # n) (step S304).

[0185] In the operation in Fig. 15, when the free space of the OPC area (Ex #n), TDMA (Ex #n), ISA (Ex #n), etc. secured in the border-in area is low, It may be configured to determine that the close process is to be performed (step S112).

[0186] As described above, according to the information recording / reproducing apparatus in the embodiment, each time the border close process is performed, a new OPC area (Ex #n), TDMA (Ex #n), ISA (Ex # n), etc. are secured, and thereafter, the CPU 354 or 359, which constitutes a specific example of the `` control means '' of the present invention, the OPC area (# 0) 114 and TDMA ( # 0) 115 or ISA (# 0) 1 Instead of 19 etc., the OPC pattern is recorded in the OPC area (Ex # n), the disc management information etc. is recorded in TDMA (Ex # 1), Saved data is recorded for ISA (Ex # n).

[0187] For this reason, even if the new optical disc 100 is loaded into an information recording / reproducing apparatus that does not support the new optical disc 100, the border close process is performed! /, Ruta Therefore, there is little or no risk of the optical pickup 352 moving to an unrecorded portion on the outer peripheral side of the border-out area. The latest disk management information at the time of the first border close process is DMA (# 1) 116, DMA (# 2) 113, TDMA (# 0) 115, etc. in the lead-in area 104. The saved data is recorded in the ISA (# 0) on the inner circumference side of the data area 106. Therefore, in correspondence with the new optical disc 100, even when the information recording / reproducing apparatus reads disc management information, saved data, etc., there is little or no possibility that the optical pickup 352 moves to an unrecorded portion. Disappear. Therefore, even if the information recording / reproducing apparatus does not support the new optical disc 100, the data recorded on the new optical disc 100 (specifically, the data area when the first border-close process is performed) The data recorded in 106) can be suitably reproduced without causing a malfunction.

[0188] For the information recording / reproducing apparatus 200 corresponding to the new optical disc 100, the newly secured TDMA (Ex # 1) and It is possible to perform differential management using ISA (Ex # 1), record disk management information, and record OPC patterns in the OPC area (Ex # 1) to perform OPC processing. That is, even after the border closing process is performed, data can be suitably recorded in an unrecorded portion of the data area 106 while suitably performing differential management, laser power calibration, and the like.

[0189] Further, the information recording / reproducing apparatus 200 corresponding to the new optical disc 100 records in TDMA (# 0) 115 to 13-8 (# 0) or the like before border closing processing is performed. Furthermore, after the border close processing is performed using the disk management information and saved data, the disk management information and the data recorded in TDMA (Ex #n) and ISA (Ex #n) are recorded. The data recorded on the new optical disc 100 can be suitably reproduced using the saved data or the like.

[0190] As described above, when the recording operation by the information recording / reproducing apparatus 200 according to the present embodiment is performed, data recording and recording are preferably performed before and after the border closing process. Playback can be performed. Even if it is an information recording / reproducing device that does not support the new optical disc 100, the data recorded on the new optical disc 100 is preferred. It can be played back properly.

[0191] Also, the positions of newly reserved OPC areas (Ex #n), TDMA (Ex #n), ISA (Ex #n), etc. are updated when border closing processing is performed (see TDDS190). It can be recognized relatively easily by referring to 14). Therefore, even if a new OPC area (Ex #n), TDMA (Ex #n), ISA (Ex #n), etc. are secured, the information recording / reproducing apparatus 200 required to recognize these areas The processing load has the advantage that it increases too little or hardly.

[0192] Furthermore, even if a new OPC area (Ex # n), TDMA (Ex # n), ISA (Ex # n), etc. is secured, the disk management information and saved data used so far Is copied to newly secured TDMA (Ex # n), ISA (Ex # n), etc. For this reason, it is sufficient to refer to newly reserved TDMA (Ex # n), ISA (Ex # n), etc., without needing to refer to multiple areas in order to obtain disk management information and saved data. In other words, using newly reserved TDMA (Ex #n), ISA (Ex #n), etc., it is possible to centrally manage disk management information and saved data. Also from this point, the processing load of the information recording / reproducing apparatus 200 has an advantage that it is not so much or hardly increased.

[0193] In the above-described embodiment, a new OPC area (Ex

# n), TDMA (Ex # n), ISA (Ex # n), etc. are configured, but this is not a limitation. For example, after the first border close process is performed, a new OPC area (

Ex # 1), TDMA (Ex # 1), ISA (Ex # 1), etc. may be secured only once. This aspect will be described more specifically with reference to FIG. FIG. 19 is a data structure diagram conceptually showing the data structure of the optical disc after the border close process is performed.

[0194] As shown in Fig. 19, it is planned to be used as an OPC area (Ex # 1), TD MA (Ex # 1), ISA (Ex # 1), etc. at the end of the data area 106, for example. This area is reserved, and after the first border close process is performed, this area is enabled (i.e., OPC 7 (Ex # l) TDMA (Ex # 1) or ISA (Ex # 1), etc.), OPC area (Ex # 1), TD MA (Ex # 1) or ISA (Ex # 1) Anyway. Thus, predetermined The OPC area (Ex # 1), TDMA (Ex # 1), ISA (Ex # 1), etc. are newly created by setting the reserved area as a reserved state and enabling the area set as the reserved state. You may comprise so that it may ensure. Or, even if there is no area that is set as reserved in this way, after the first border close process is performed, a new OPC area (Ex # 1) or TDMA (Ex # 1) 13 # 1) may be newly reserved at the end of the data area 106. After that, the OPC area (Ex # 1), TDMA (Ex # 1), and ISA (Ex # 1) reserved at the end of the data area 106, regardless of whether or not the border close processing is further performed. Diffetate management and OPC processing are performed using. Even with this configuration, the various benefits described above can be enjoyed.

[0195] In addition, it is not necessary to secure a new OPC area (Ex #n), TDMA (Ex #n), or ISA (Ex #n) every time the border close process is performed! If the processing load can be relatively reduced, there is also an advantage.

[0196] Furthermore, the present invention is not limited to the mode shown in FIG. 19, and a new OPC area (Ex # n) or a disc for recording disk management information, saved data, OPC patterns, etc. after border closing processing is performed. If TDMA (Ex #n), ISA (Ex #n), etc. are secured, the various benefits described above can be enjoyed.

[0197] Also, the position where the OPC area (Ex # n), TDMA (Ex # n), ISA (Ex # n), etc. is secured is not limited to the specific example in the above embodiment, From the viewpoint of ensuring the stability of the operation of the information recording / reproducing device in correspondence with the optical disk 100, the data subject to the first border closing process is recorded. It is preferable to newly secure the outer peripheral side of the existing position.

In the above-described embodiment, the power described for the optical disc 100 as an example of the recording medium and the recorder or player according to the optical disc 100 as an example of the recording / reproducing apparatus. The present invention is not limited to the optical disc and the recorder. Other recording media that support high-density recording or high transfer rates, and their recorders or discs can also be applied to players.

[0199] The present invention is not limited to the embodiments described above, but the entire claims and specification. The information recording apparatus and method, the information reproducing apparatus and method, the computer program, and the information recording medium that accompany such a change can also be appropriately changed without departing from the gist or idea of the invention that can be read. It is included in the technical scope. Industrial applicability

The information recording device and method, the information reproducing device and method, the computer program, and the information recording medium according to the present invention can be used for an information recording medium such as an optical disk, and further, the information recording device such as a DVD recorder or a player. It can be used for information reproducing devices. Further, the present invention can also be used for an information recording device or an information reproducing device that is mounted on or connectable to various computer devices for consumer use or business use.

Claims

The scope of the claims

[1] An information recording apparatus for recording recorded data on an information recording medium comprising a data area and a first management area,

First recording means for recording the recording data in the data area;

Second recording means for recording management data used for management of differentials generated in the data area and recording of the recording data in the first management area;

A closing means for performing a closing process on the recording data in a predetermined unit recorded in the data area;

Securing means for securing a second management area in which the management data is recorded after the closing process is performed;

An information recording apparatus comprising:

[2] The second recording means records the management data recorded in the first management area in the second management area secured by the securing means after the closing process is performed for the first time. The information recording apparatus according to claim 1, wherein:

3. The information recording apparatus according to claim 1, wherein the securing unit newly secures the second management area each time the closing process is performed.

[4] The second recording means may be configured to newly secure the management data recorded in the second management area used before the securing means newly secures the second management area. 2. The information recording device according to claim 3, wherein the information recording device records in a management area.

[5] The securing means secures the second management area in a buffer area created following the recording data of the predetermined unit in which the closing process is performed. The information recording device according to item.

[6] The information recording medium has a disk shape, and the first management area is provided on the relatively inner peripheral side of the information recording medium,

2. The information recording apparatus according to claim 1, wherein the securing means secures the second management area on a relatively outer peripheral side of the information recording medium.

[7] The first recording means records the recording data on an outer peripheral side of the first management area. 7. The information recording apparatus according to claim 6, wherein the securing means secures the second management area on the outer periphery side of the recording data recorded by the first recording means.

[8] The information according to claim 1, wherein the second recording unit records area position data indicating a position of the second management area when the closing process is performed. Recording device.

[9] The information recording apparatus according to claim 8, wherein the second recording unit records the area position data in at least one of the first management area and the second management area. .

[10] The apparatus according to claim 1, further comprising control means for controlling the second recording means so as to record the management data in the second management area after the closing process. The information recording device described in 1.

[11] The management data is (0) differential position data indicating a position where the differential has occurred on the data area, GO should be recorded or recorded at the position where the differential has occurred 2. The information recording apparatus according to claim 1, wherein the information recording apparatus includes at least one of data and (m) retraction position data indicating a position where the retraction data is recorded.

12. The information recording apparatus according to claim 1, wherein the management data includes calibration data for calibrating power when recording the recording data.

[13] An information recording method for recording record data on an information recording medium comprising a data area and a first management area,

A first recording step of recording the recording data in the data area;

A second recording step for recording, in the first management area, management data used for at least management of differentials occurring in the data area and recording of the recording data; and the recording data recorded in the data area, A closing process for performing a closing process in a predetermined unit; A securing step for securing a second management area in which the management data is recorded after the closing process;

An information recording method comprising:

[14] An information reproducing apparatus for reproducing the recorded data recorded on the information recording medium by the information recording apparatus according to claim 1.

Obtaining means for obtaining the management data recorded in at least one of the first management area and the second management area;

Reproduction means for reproducing the recorded data recorded in the data area based on the acquired management data

An information reproducing apparatus comprising:

[15] An information reproducing method for reproducing the recorded data recorded on the information recording medium by the information recording apparatus according to claim 1.

An acquisition step of acquiring the management data recorded in at least one of the first management area and the second management area;

A reproducing step of reproducing the recorded data recorded in the data area based on the acquired management data;

An information reproducing method comprising:

[16] A computer program for recording control for controlling a computer provided in the information recording device according to claim 1, wherein the computer is the first recording means, the second recording means, A computer program that functions as at least part of the closing means and the securing means.

[17] A computer program for reproduction control for controlling a computer provided in the information reproduction apparatus according to claim 14, wherein the computer is at least a part of the acquisition unit and the reproduction unit. A computer program characterized by functioning as a computer program.

[18] A data area for recording recorded data,

A first management area for recording management data used for management of differentials generated in the data area and recording of the recording data; A pointer area for recording area position data indicating a position of a second management area for recording the management data after the recording data of a predetermined unit is closed; A characteristic information recording medium.

19. The information recording medium according to claim 18, wherein the pointer area is included in at least one of the first management area and the second management area.

20. The information recording medium according to claim 18, wherein a plurality of the second management areas are provided according to the number of times the close process is performed.

21. The second management area is included in a buffer area created following the recording data of the predetermined unit in which the closing process is performed.

The information recording medium according to item 8.

[22] The information recording medium has a disc shape,

The first management area is provided on a relatively inner circumference side of the information recording medium, and the second management area is provided on a relatively outer circumference side of the information recording medium. The information recording medium according to item 18 of the scope.

[23] The data area is provided on the outer peripheral side of the first management area,

23. The information recording medium according to claim 22, wherein the second management area is provided on an outer peripheral side of the data area.

[24] The management data includes differential position data indicating a position where the differential occurs in the data area, saved data which is the recording data to be recorded or recorded at the position where the differential has occurred, and the management data. 19. The information recording medium according to claim 18, wherein the information recording medium includes at least one save position data indicating a position where the save data is recorded.

25. The information recording medium according to claim 18, wherein the management data includes calibration data for calibrating power when recording the recording data.