WO2007094307A1

WO2007094307A1 - Information recording device and method, information recording system, and computer program

Info

Publication number: WO2007094307A1
Application number: PCT/JP2007/052497
Authority: WO
Inventors: Keiji Katata; Takeshi Koda; Masayoshi Yoshida
Original assignee: Pioneer Corporation
Priority date: 2006-02-14
Filing date: 2007-02-13
Publication date: 2007-08-23
Also published as: TW200809809A

Abstract

An information recording device (200) includes: recording means (352) for recording user data on an information recording medium (100) having a first recording layer (L0 layer) and a second recording layer (L1 layer) having user data areas (105, 115); setting means (354) for setting a recording zone end address (RZone end address) indicating an end of an area where user data has been recorded; and first control means (359) for controlling the setting means to set a recording zone end address at the address of the end of the user data area of the second recording layer when the information recording medium is subjected to a compatibility process for compatibility with a reproduction-dedicated information recording medium and the entire user data areas of the first recording layer and the second recording layer are recorded.

Description

Specification

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

[0001] The present invention relates to an information recording apparatus and method such as a DVD recorder, and a technical field of a computer program that causes a computer to function as such an information recording apparatus.

Background art

For example, in information recording media such as DVD-ROM (DVD-Read Only Memory), DVD-R (DVD-Recordable), and BD-ROM, the same as described in Patent Document 1 and the like. An information recording medium such as a multi-layer type or dual layer type optical disc in which a plurality of recording layers are laminated or bonded on a substrate has also been developed. When recording on such a dual-layer type optical disc, for example, a dual-layer DVD-RW disc, an information recording device such as a DVD recorder is closest to the laser beam irradiation side (ie, A phase change recording method (in which data is recorded on the L0 layer) by irradiating a recording laser beam onto the recording layer (referred to as “L0 layer” in this application as appropriate) located on the side close to the optical pickup. In other words, the recording layer (reversible recording method) is used, and the recording layer is located on the far side of the L0 layer (that is, on the side far from the optical pickup force) when viewed from the laser light irradiation side via the L0 layer, etc. By focusing the laser beam on the “single layer”, data is recorded on the L1 layer by the phase change recording method. In particular, in a dual layer type optical disc, data is recorded by the inner peripheral side force in the L0 layer as well as in the outer peripheral side, and in the L1 layer, data is recorded in the direction from the outer peripheral side to the inner peripheral side. The pogitt track path method is used.

[0003] At this time, when recording data on the L1 layer, it is necessary to irradiate laser light through the L0 layer. Therefore, depending on the recording state of the L0 layer, the laser light irradiated on the L1 layer The characteristics of will change. Specifically, the L0 layer area where the data has been recorded and the area part of the L0 layer where the data has not been recorded have different transmittances to the laser beam. Characteristics such as the intensity of the emitted laser light will change. For this reason, when data is recorded on a dual layer type optical disc, for example, the standard stipulates that data is recorded on the L1 layer after the data is recorded on the LO layer. More specifically, for example, the standard stipulates that data is recorded in the L1 layer by irradiating laser light through the LO layer area where data has been recorded. This restriction is called the so-called recording order.

[0004] On the other hand, a recordable information recording medium capable of recording data (eg, DVD-RW) and a read-only information recording medium capable of only reading data (eg, DVD-ROM) In order to ensure compatibility, it is necessary to perform compatibility processing such as closed disk operation. In the compatibility process, for example, a lead-in area is provided on the inner circumference side of the LO layer, a middle area that sandwiches the user data area together with the lead-in area is provided on the outer circumference side of the LO layer, and a lead is provided on the inner circumference side of the L1 layer. An out area is provided, and a middle area that sandwiches the user data area together with the read out area is provided on the outer periphery of the L1 layer. Furthermore, the user data area between the lead-in area and the middle area and the user data area between the lead-out area and the middle area are set to the recorded state. If the compatibility process is performed, an unrecorded area may exist in the user data area between the lead-in area and the middle area and the user data area between the lead-out area and the middle area. For example, it is necessary to record the padding data (for example, “OOh” data, etc.) in the unrecorded area portion so that the recorded state is obtained. Further, even after the compatibility processing is performed, the data can be recorded again on the information recording medium by performing processing such as open disk operation.

Patent Document 1: Japanese Patent Application Laid-Open No. 2000-311346

Patent Document 2: Japanese Patent Laid-Open No. 2001-23237

Disclosure of the invention

Problems to be solved by the invention

[0006] The above-described recording operation is performed on such an information recording medium while recording RMD (Recording Management Data) indicating the recording state of data on the L0 layer and the L1 layer. RMD contains the address of the end of the area where data has been recorded. RZone End Address, which indicates the service name, is included. This RZone end address is recorded while the value is appropriately updated as data is recorded in the L0 and L1 layers.

[0007] Here, as described above, when the compatibility process is performed, if any data is recorded in the user data area of the L1 layer, there is a gap between the lead-out area and the middle area. Padding data must be recorded in the unrecorded area. However, even after recording nodding data, the change in the recording state due to the padding data recording cannot be reflected in the RZone end address. ing. For this reason, it is not permitted to reflect the change in the recording state due to the recording of padding data to the RZone end address independently because the drive recorded the padding data during the compatibility process. Have some problems.

[0008] For this reason, a system (for example, a general-purpose personal computer) that does not support the above-mentioned open disk operation even though data is recorded in the entire L0 layer and L1 layer. OS, etc.) used in this technology has technical problems such as only reading and writing up to the area indicated by the RZone end address.

The present invention has been made in view of the above-described conventional problems, for example, an information recording apparatus and method capable of effectively using the entire area of the information recording medium, an information recording system, and It is an object to provide a computer program that causes a computer to function as such an information recording 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 records the user data on an information recording medium having a first recording layer and a second recording layer each having a user data area in which user data can be recorded. Recording means for setting, a setting means for setting a recording zone end address indicating an end portion of the area where the user data has been recorded in the user data area, and a read-only information recording medium for the information recording medium The first recording layer and the second recording layer are obtained as a result of performing a compatibility process for compatibility. The setting means is configured to set the recording zone end address to the address of the end of the user data area of the second recording layer when the entire user data area is recorded. First control means for controlling.

[0011] According to the information recording apparatus of the present invention, a user including, for example, video information or audio information in each of the user data area of the first recording layer and the user data area of the second recording layer by the operation of the recording means. Data can be recorded. In the present invention, for example, in the first recording layer located on the near side (specifically, located on the side closer to the optical pickup described later), for example, the inner peripheral side force of the information recording medium is also directed toward the outer peripheral side. User data is recorded, for example, on the second recording layer located on the back side (specifically, located on the far side V as seen from the optical pickup described later), for example, on the outer periphery of the information recording medium. The opposite track path method is used in which user data is recorded from the side toward the inner circumference.

[0012] Then, along with the recording of the user data, the operation of the setting means causes the terminal portion of the area portion in which the user data in the user data area has been recorded (for example, on the outer peripheral side in the first recording layer). This is the end of the recording zone that indicates the end of the second recording layer. The recording zone end address may be recorded on the information recording medium, for example, by the operation of the recording means.

[0013] In the present invention, in particular, the result of performing compatibility processing for compatibility with the information recording medium for reproduction only (for example, the entire user data area of the first recording layer) As a result of compatibility processing after user data is recorded in at least a part of the user data area of the second recording layer), the entire user data area of each of the first recording layer and the second recording layer is already recorded. In this case, the recording zone end address is set to the end address of the user data area of the second recording layer by the operation of the first control means.

In the compatibility process, for example, a lead-in area and a middle area are provided in the first recording layer, and a lead-out area and a middle area are provided in the second recording layer. Further, the user data area between the lead-in area and the middle area and the user data area between the lead-out area and the middle area are set in a recorded state. Therefore, if the compatibility processing is performed after any user data is recorded on the second recording layer, the user data on the _second recording layer is used. User data or padding data is recorded in the entire data area.

[0015] Thus, if the recording zone end address is read, the entire user data area of the second recording layer can be suitably recognized. If the control by the first control means is not performed during the compatibility process, the recording zone end address indicates the end of the area portion where the user data has been recorded. For this reason, there may be an inconvenience that the area portion of the user data area of the second recording layer made available by recording the padding data cannot be recognized. This is particularly noticeable in systems that do not support open disk operations for recording user data on the information recording medium again after the compatibility process. However, according to the present invention, since the recording zone end address is set to the end address of the user data area of the second recording layer, even in a system that does not support open disk operation, padding data It is possible to preferably recognize the area portion of the user data area of the second recording layer that is made available by recording. For this reason, the entire area of the information recording medium can be used effectively.

[0016] One aspect of the information recording apparatus of the present invention is that the information recording medium is configured so that the recording zone end address is set to an address of an end portion of the user data area of the second recording layer. Update means for updating structure information indicating a recording state of the user data area on the information recording medium included in file system information for logically managing the user data recorded in the file.

[0017] According to this aspect, the user data recorded on the information recording medium is physically managed (in other words, managed on the drive side), and the recording zone end address is recorded on the information recording medium. It is possible to favorably maintain the synchronization with the structure information for logically managing the recorded user data (in other words, for managing on the host side). Therefore, even if the recording zone end address is set to the end address of the user data area of the second recording layer during the compatibility process as described above, the user data recorded on the information recording medium is logically managed. No contradiction occurs with the file system information to be executed. Therefore, the above-mentioned various benefits can be enjoyed while ensuring a suitable recording operation and reproducing operation. [0018] According to another aspect of the information recording apparatus of the present invention, the user data is stored in response to setting the recording zone end address to an address of an end portion of the user data area of the second recording layer. The apparatus further comprises second control means for controlling the recording means to record information to be recorded at the end portion of the recorded area portion at the end portion of the user data area of the second recording layer.

[0019] According to this aspect, the information to be recorded at the end portion of the area portion where the user data has been recorded is suitable even after the control by the first control means during the compatibility process. Can be read. Therefore, the above-described various benefits can be enjoyed while ensuring a suitable recording operation and reproducing operation.

[0020] In another aspect of the information recording apparatus of the present invention, the recording means records the user data in the entire user data area of the first recording layer, and then the user data of the second recording layer. The user data is recorded in the area.

[0021] According to this aspect, it is possible to receive the above-described various benefits while preferably satisfying the recording order.

[0022] (Information recording method)

In order to solve the above-described problems, the information recording method of the present invention includes a recording step of recording user data on an information recording medium including a first recording layer and a second recording layer each having a user data area, and the user A setting step of setting a recording zone end address indicating an end portion of an area portion in which the user data has been recorded in the data area; the entire user data area of the first recording layer; and the user data of the second recording layer The recording zone end address when the user data is recorded in at least a part of the area and the information recording medium is subjected to compatibility processing for compatibility with a reproduction-only information recording medium. And a first control step of controlling the setting step so as to set the address of the end portion of the user data area of the second recording layer.

[0023] According to the information recording method of the present invention, it is possible to receive the same benefits as the various benefits of the information recording apparatus of the present invention described above.

Incidentally, in response to the various aspects of the information recording apparatus of the present invention described above, the information recording method of the present invention can also adopt various aspects. [0025] (Computer program)

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

[0026] According to the computer program of the present invention, the computer program is read from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program and executed by the computer, or 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.

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

[0028] In order to solve the above problems, a computer program product in a computer-readable medium can be executed by a computer provided in the above-described information recording apparatus of the present invention (including various aspects thereof). The program instructions are clearly embodied, and the computer functions as at least a part of the recording means, the setting means, and the first control means.

[0029] According to the computer program product of the present invention, the computer program product can be read into a computer from a recording medium such as a ROM, CD-ROM, DVD-ROM, or hard disk storing the computer program product, or For example, if the computer program product, which is a transmission wave, is downloaded to a computer via communication means, the information recording apparatus of the present invention described above can be implemented relatively easily. More specifically, the computer program product may be configured by a computer readable code (or computer readable instruction) that functions as the information recording apparatus of the present invention described above. (Information recording system)

In order to solve the above problems, an information recording system of the present invention includes the above-described information recording apparatus of the present invention (including various aspects thereof).

[0030] According to the information recording system of the present invention, each of the above-described information recording apparatus of the present invention has You can enjoy the same benefits as seed benefits.

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

[0032] These effects and other advantages of the present invention will become more apparent from the embodiments described below.

[0033] As described above, according to the information recording apparatus of the present invention, the recording device, the setting device, and the first control device are provided. According to the information recording method of the present invention, the information recording method includes a recording process, a setting process, and a first control process. According to the computer program of the present invention, the computer is caused to function as at least part of the recording means, the setting means, and the first recording means. According to the information system of the present invention, the information recording apparatus of the present invention is included. Therefore, the entire area of the information recording medium can be used effectively.

Brief Description of Drawings

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

FIG. 2 is a schematic cross-sectional view of an optical disc and a schematic conceptual diagram of a recording area structure in the radial direction associated therewith.

FIG. 3 is a data structure diagram conceptually showing the data structure of RMD recorded in RMA.

FIG. 4 is a data structure diagram conceptually showing the data structure of each field constituting the RMD for each of format 2 and format 3.

FIG. 5 is a data structure diagram showing the data structure of field 3 of RMD in format 3.

FIG. 6 is a block diagram conceptually showing the basic structure of the information recording / reproducing apparatus in the example.

FIG. 7 is an area structure diagram conceptually showing the area structure of the optical disc before data is recorded.

[FIG. 8] An area structure diagram conceptually showing the area structure of the optical disk when data is recorded only in the LO layer.

[Fig.9] Conceptual area structure of optical disc when data is recorded on LO and L1 layers FIG.

Explanation of symbols

[0035] 100 optical disc

102 Lead-in area

103, 113 RMA

105, 115 Data area

106, 116 Shifted middle area

109, 119 Fixed midole area

118 Lead-out area

200 Information recording and playback device

300 disk drive

352 optical pickup

353 Signal recording and playback means

354, 359 CPU

400 host computer

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. (1) Optical disc

First, with reference to FIG. 1, description will be given on an optical disc 100 as an embodiment relating to an information recording medium to be subjected to a recording operation by the information recording apparatus of the present invention. Here, FIG. 1 (a) is a schematic plan view showing the basic structure of the optical disc 100 according to the present embodiment, and FIG. 1 (b) is a schematic cross-sectional view of the optical disc 100 and is associated therewith. 2 is a schematic conceptual diagram of a recording area structure in the radial direction. FIG.

[0037] As shown in Fig. 1 (a) and Fig. 1 (b), the optical disc 100 is, for example, read on the recording surface on the disc body having a diameter of about 12 cm, with the center hole 101 as the center, like DVD. In-area (Lead-In Area) 102 or Lead-Out Area (Lead-Out Area) 118, data areas 105 and 115 constituting a specific example of “user data area” in the present invention, fixed middle area (Fixed Middle Area) 109 and 119 are provided. And light di The disk 100 has a recording layer or the like laminated on a transparent substrate 110. In each recording area of the recording layer, for example, tracks such as a groove track and a land track are alternately provided in a spiral shape or a concentric shape around the center hole 101. On this track, data is divided and recorded in units of ECC blocks. The ECC block is a data management unit in which recorded information can be error-corrected.

It should be noted that the present invention is not particularly limited to an optical disc having such three areas.

For example, even if the lead-in area 102, the lead-out area 118, or the fixed middle area 109 (119) does not exist, the data structure described below can be constructed. The lead-in area 102, the lead-out area 118, or the fixed middle area 109 (119) may be further subdivided.

In particular, as shown in FIG. 1B, the optical disc 100 according to this example includes, for example, an LO layer that constitutes an example of the first and second recording layers according to the present invention on a transparent substrate 110. And L1 layer has a laminated structure. At the time of recording / reproduction of such a two-layer type optical disc 100, depending on which recording layer the condensing position of the laser beam LB irradiated from the lower side to the upper side in FIG. Data recording / reproduction in the L0 layer is performed or data recording / reproduction in the L1 layer is performed. In particular, in the L0 layer, data is recorded from the inner circumference side to the outer circumference side, and in the L1 layer, data is recorded from the outer circumference side to the inner circumference side. That is, the optical disc 100 according to the present embodiment corresponds to an opposite track path type optical disc.

[0040] In the optical disc 100 according to the present embodiment, after data is recorded in the data area 105 of the L0 layer, data is recorded in the data area 115 of the L1 layer. More specifically, after data is recorded in the entire data area 105 of the L0 layer, data recording to the data area 115 of the L1 layer is started.

In addition, the optical disc 100 according to the present embodiment includes an RMA (Recording Management Area) 103 (113) on the inner peripheral side of the lead-in area 102 and the lead-out area 118.

The RMA 103 (113) is a recording area for recording RMD (Recording Management Data) for managing data recording on the optical disc 100. R A more specific data structure of MD will be described in detail later (see Fig. 3 to Fig. 5).

In addition, the optical disc 100 according to the present embodiment may be two-layer single-sided, that is, not limited to dual layers, but may be two-layer double-sided, that is, dual-layer double-side. Furthermore, it is not limited to an optical disc having two recording layers as described above, and may be a multilayer type optical disc having three or more layers.

[0044] The fixed middle area 109 (119) is recorded in the entire data area 105 (115), and then, for example, a read-only optical disk such as a DVD-ROM and the optical disk 100 according to the present embodiment are used. Formed for compatibility with. In other words, the fixed middle area 109 (119) is formed in order to make the area structure on the two-layered read-only optical disc similar to the area structure on the optical disc 100 according to the present embodiment. . In the fixed middle area 109 (119), when data is recorded in the entire data area 105 (115), when performing a layer jump to change the recording layer or near the fixed middle area 109 (119) It has a function to prevent the optical pickup from jumping to an unrecorded area (specifically, the outer periphery side of the fixed middle area 109 (119)) during hair access. When data is recorded only in a part of the data area 105 (115), a shifted middle area 106 (116) is used instead of the fixed middle area 109 (119).

Here, the shifted middle area 106 (116) will be described with reference to FIG. FIG. 2 is a schematic sectional view of the optical disc 100 and a schematic conceptual diagram of the recording area structure in the radial direction associated therewith.

As shown in FIG. 2, the shifted middle area 106 is provided in the data area 105 following the data recorded in a part of the data area 105. Similarly, the shifted middle area 116 is provided in the data area 115 so as to face the shifted middle area 106 provided in the L0 layer following the data recorded in a part of the data area 115. It is done.

[0047] By providing the shifted middle area 106 (116), even when data is recorded only in a part of the data area 105 (115), a read-only optical disk such as a DVD-ROM can be used. Compatibility with the optical disc 100 according to the present embodiment can be achieved. In addition, it is possible to prevent the optical pickup from jumping out to an unrecorded area when performing a layer jump. In addition, even when layer jump is not performed, It is possible to prevent popping out to an unrecorded area on the outer peripheral side of the shifted middle area 106 (116). For this reason, the read-only information reproducing apparatus can reproduce the data recorded on the optical disc 100.

In other words, the shifted middle area 106 (116) has a function for preventing the optical pickup from popping out in the case where data is recorded only in a part of the data area 105 (115), and a reproduction-only type. And a function for maintaining compatibility with other optical discs. In particular, when layer jump recording is performed, data can often be recorded only in a part of the data area 105 (115). Therefore, the shifted middle area 106 (116) is particularly effectively used when performing layer-one jump recording.

[0049] On the other hand, the fixed middle area 109 (119) is compatible with a read-only optical disc and a function to prevent the optical pickup from popping out when data is recorded in the entire data area 105 (115). It has both the function to keep the sex.

[0050] Next, a specific data structure of the RMD recorded in the RMA 103 (113) will be described with reference to FIG. 3 to FIG. 3 is a data structure diagram conceptually showing the data structure of RMD recorded in RMA103 (113), and FIG. 4 shows the data structure of each field constituting RMD as format 2 and format. FIG. 5 is a data structure diagram conceptually showing each of 3 and FIG. 5 is a data structure diagram showing a data structure of field 3 of RMD in format 3. In the following description, for the sake of simplicity, the RMA 103 has a similar data structure! / ヽ Needless to say.

[0051] As shown in FIG. 3, the RMA 103 is divided into five RMA segments (# 1 to # 5). Each RMA segment (# 1 to # 5) can contain 28 RMD sets (# 1 to # 28). Each RMD set (# 1 to # 28) can record 5 RMD blocks, each with a size of 32KB. The five RMD blocks recorded in each RMD set (# 1 to # 28) have the same contents except for some fields. In other words, five RMD blocks showing the same contents are recorded in one RMD set redundantly. Each RMD block contains a Linking Loss Area with a size of 2 KB and 15 fields (0 to 14) each with a size of power KB. It is.

As shown in FIG. 4, the optical disc 100 according to the present embodiment records the format 2 RMD (Format 2 RMD) and the format 3 RMD (Format 3 RMD) in the RMA 103. Format 2RMD has a pointer function that indicates the position of a valid (in other words, the latest) format 3RMD, and the format 3RMD actually contains information for managing data recording on the optical disc 100. include.

[0053] Specifically, format 2RMD includes a linking loss area, common information (Common Information), a pointer to an RMD set (Pointer to RMD Set), and a reserved area.

[0054] Format 3RMD includes linking loss area, common information, OPC related information (Optimum Power control Related Information), menus (User Specinc Data), recording status It includes information (Recording Status Information), a differential status bitmap (Defect Status Bitmap), drive specific information (Drive Specific Information), and disk testing area information (Disc Testing Area Information).

[0055] Format 2RMD is recorded in RMD set # 1 at the beginning of each RMA segment to indicate the position of a valid format 3RMD by a pointer to the RMD set. Format 3RMD is recorded at the RMD at the beginning of each RMA segment. Recorded in RMD set (# 2 to # 28) other than set # 1.

Specifically, for example, when the blank optical disc 100 is subjected to format processing, RMD set # 2 other than the first RMD set # 1 of RMA segment # 1 (or RMD set # Format 3RMD is recorded from 3 to # 28). It is then recorded in the first RMD set # 1 of format 2RMD force RMA segment # 1 to point to the location where format 3RMD is recorded.

[0057] As the recording of data in the data area 105 (115) proceeds, the format 3RMD is updated. Format 3RMD is overwritten on the same RMD set # 2 every time it is updated or at a specified timing. While overwriting is performed many times, a reading error will occur due to the effect of overwriting exceeding the upper limit of the number of rewrites or the effect of scratches or dirt. And the 5 RMD blocks in RMD set # 2 If format 3RMD cannot be read by multiple RMD blocks, format 3RMD is newly recorded in RMD set # 3 other than RMD set # 2. In this case, the format 2RMD is also updated as the position where the format 3RMD is recorded is changed, and is overwritten on the RMD set # 1. Thereafter, this operation is also performed for RMD sets # 3 to # 28. If it is determined that the format 3RMD cannot be read for all RMD sets in RMA segment # 1, format 3RMD is newly recorded in RMD set # 2 in RMA segment # 2, and RMA segment # 2 Record a new format 2RMD in RMD set # 1 of 2. Thereafter, this operation is also performed for segments # 2 to # 5.

[0058] Also, if it becomes impossible to read format 2 RMD with multiple RMD blocks among the 5 RMD blocks included in RMD set # 1 of RMA segment # 1, use RMA segment # 2 Record format 2RMD and format 3RMD. In this case, even if it is possible to read the format 3RMD from the RMD set # 2 to R28 of RMA segment # 1, the format 2RMD and the format 3RMD are used by using the next RMA segment # 2. Record.

[0059] Subsequently, as shown in FIG. 5, the recording status information recorded in the field 3 of the format 3RMD is the byte position "0,, the format operation code and the byte position" Format information # 1 (format information 1) from 2 to 5, and format information # 2 (format information 2) from byte position "6 to 9" and last RZone number (from position 256 to 257) Last RZone Number), byte position "258 to 261", RZone start sector number (Start sector number of RZone), and byte position "262 to 265" specific examples of "recording zone end address" in the present invention The end sector number of RZone (End sector number of RZone), the layer position of the L0 layer (Layer Jump address on Layer 0) and the byte position Last recorded address from “516 to 519”, last layer jump address on Layer 0 from byte position “520 to 523” and Neut position “524” 525 "includes a jump interval and an area where other information is recorded. [0060] (2) Basic configuration of information recording / reproducing apparatus

Subsequently, an information recording / reproducing apparatus 200 as an embodiment according to the information recording apparatus (or information recording system) of the present invention will be described with reference to FIG. FIG. 6 is a block diagram conceptually showing the basic structure of the information recording / reproducing apparatus 200 in the example. The information recording / reproducing apparatus 200 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. 6, the information recording / reproducing apparatus 200 includes a disk drive 300 in which the optical disk 100 is actually loaded and data is recorded and reproduced, and data recording and recording on the disk drive 300 are performed. And a host computer 400 such as a personal computer for controlling playback!

The disk drive 300 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. It is configured. The host computer 400 includes a CPU 359, a memory 360, an operation / display control means 307, an operation button 310, a display panel 311 and a 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 constitutes one specific example of the “recording means” in the present invention together with the CPU 354. For example, a semiconductor laser element (not shown), a collimator lens, and an objective are used to perform recording and reproduction on the optical disc 100. Constrained by the lens. More specifically, the optical pickup 352 irradiates the optical disc 100 with a light beam such as a laser beam at a first power as a read light during reproduction, and at a second ratio as a write light during recording. Irradiate while modulating.

The signal recording / reproducing means 353 performs recording / reproduction with respect to the optical disc 100 by controlling the spindle motor 351 and the optical pickup 352 under the control of the CPU 354. More specifically, the signal recording / reproducing means 353 is, for example, a laser diode driver (LD driver). 2) and a head amplifier. For example, the laser diode driver generates a driving pulse 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.

[0066] The memory 355 includes general data processing and OPC processing in the disk drive 300, 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.

A CPU (drive control means) 354 is connected to the signal recording / reproducing means 353 and the memory 355 via the bus 357, and controls the entire disk drive 300 by giving instructions to various control means. Normally, the 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 300 and stores and retrieves data in / from the data buffer on the memory 355. Drive control commands issued from an external host computer 400 connected to the disk drive 300 via an interface such as SCSI or ATAPI are transmitted to the CPU 354 via the data input / output control means 306. The Similarly, recording / reproduction data is exchanged with the host computer 400 via the data input / output control means 306.

[0069] The operation Z display control means 307 is for receiving and displaying an operation instruction for the host computer 400, and for example, transmits an instruction by the operation button 310 such as recording or reproduction to the CPU 359. The CPU 359 transmits a control command (command) to the disk drive 300 via the data input / output means 308 based on the instruction information from the operation Z display control means 307 to control the entire disk drive 300. Similarly, the CPU 359 can send a command requesting the disk drive 300 to send the operating status to the host. As a result, the operating state of the disk drive 300 during recording or playback can be grasped, so the CPU 359 can display a display panel such as a fluorescent tube or LCD via the operation / display control means 307. The operating state of the disk drive 300 can be output to 311.

[0070] The memory 360 is an internal storage device used by the host computer 400. 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 300 and the host computer 400 in combination as described above is a household device such as a recorder device that records and reproduces video. This recorder device is a device that records a video signal from a broadcast receiving tuner or external connection terminal power on a disc and outputs the video signal reproduced from the 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 300 is a disk drive (hereinafter referred to as a drive as appropriate), and the host computer 400 is a personal computer or a workstation. A host computer such as a personal computer and the drive are connected via data input / output control means 306 and 308 such as SCSI and ATAPI, and control of the disk drive 300 such as writing software installed in the host computer 400 To do.

[0072] (3) Recording operation of information recording / reproducing apparatus

Next, a specific mode of the recording operation of the information recording / reproducing apparatus 200 according to the present embodiment will be described with reference to FIGS. Here, a specific mode of the recording operation of the information recording / reproducing apparatus 200 according to the present embodiment will be described while showing a state in which data is recorded on the optical disc 100. 7 is an area structure diagram conceptually showing the area structure of the optical disc 100 before data is recorded, and FIG. 8 is an area of the optical disc 100 when data is recorded only on the L0 layer. FIG. 9 is an area structure diagram conceptually showing the structure, and FIG. 9 is an area structure diagram schematically showing the area structure of the optical disc 100 when data is recorded in each of the L0 layer and the L1 layer.

[0073] As shown in FIG. 7, on the optical disc 100 before data is recorded, an area portion whose LBA (Logical Block Address) is "Oh" (in other words, PSN (Physical Sector Number) is set to NWA (Next Writable Address). RZone 1 starts from the area where the LBA is “Oh”.

[0074] From the NWA, it is necessary to record data sequentially. On the other hand, data can be recorded randomly (in other words, direct overwrite) in the area where data is recorded. As the data is recorded, under the control of the CPU 354 that constitutes a specific example of the “setting means” in the present invention, the end of the area where the data is recorded (specifically, in the L0 layer) The address of the outer edge, which is the inner edge of the L1 layer, is shown as the RZone end sector number ("RZone End Address" in Fig. 7). And the same as in FIG. 9), and the address of the area area next to the end of the area where the data was recorded is set in the new NWA. In other words, NWA indicates the address next to the end sector number of RZone! /

Specifically, as shown in FIG. 8 (a), it is assumed that data is recorded from the area portion where the LBA is “Oh” to the area portion where the LBA is “X lh”. In this case, “Xlh” is recorded in the RMD as the end sector number of the RZone described above, and “(Xl + l) h” is set to the new NWA. RZonel is indicated by the area part with LBA force Xlh from the area part with LBA "Oh".

When compatibility processing such as closed disk operation is performed on the optical disc 100 shown in FIG. 8A, as shown in FIG. 8B, the lead-in area 102 and the lead-out area 118 are displayed. For example, padding data such as predetermined data or “00h” data is recorded. Further, a shifted middle area 106 is formed following the data recorded in the data area 105. For example, padding data is recorded in the shifted middle area 106. Further, padding data is recorded in the area portion of the L1 layer facing the area portion of the data area 105 where the data has been recorded, and a shifted middle area 116 is continuously provided on the outer peripheral side of the recorded padding data. It is formed. For example, padding data is recorded in the shifted middle area 116.

As a result, the optical disc 100 shown in FIG. 8 (b) is a read-only optical disc (for example, D VD-ROM etc.) and the same area structure. Therefore, compatibility between the optical disk 100 according to this embodiment and the read-only optical disk can be achieved. That is, the optical disc 100 according to the present embodiment can be reproduced by a reproduction-only information reproducing apparatus.

[0078] Data can be recorded again on the optical disc 100 shown in Fig. 8 (b) by performing an open disc operation. Specifically, the shifted middle area 106 (116) is logically erased from the optical disc 100 by the open disc operation. As a result, new data can be recorded following the data recorded in the data area 105.

As a result, as shown in FIG. 9 (a), data is recorded in the entire data area 105 of the L0 layer, and thereafter, data is recorded in the data area 115 of the L1 layer. Note that the state shown in FIG. 9 (a) indicates that if data larger than the size of the data area 105 of the L0 layer is recorded on the optical disc 100 before the data shown in FIG. It can be realized without any operation.

[0080] As shown in FIG. 9 (a), it is assumed that data is recorded from the area portion where the LBA is "Oh" to the area portion where the LBA is "X2h". In this case, “X2h” is recorded in the RMD as the end sector number of the RZone described above, and “(X2 + l) h” is set to the new NWA. RZonel is indicated by the area part with LBA "X2h" from the area part with LBA "Oh".

When compatibility processing such as closed disk operation is performed on the optical disc 100 shown in FIG. 9A, as shown in FIG. 9B, the lead-in area 102 and the lead-out area 118 For example, padding data such as predetermined data or “00h” data is recorded. Further, padding data is recorded in the fixed middle areas 109 and 119.

[0082] Furthermore, the data area 115 between the lead-out area 118 and the fixed middle area 119 needs to be in a recorded state. Therefore, the lead-out area 11

Of the data area 115 between 8 and the fixed middle area 119, padding data is recorded in the area portion in the unrecorded state.

Accordingly, the optical disc 100 shown in FIG. 9B has almost the same area structure as a read-only optical disc (eg, DVD-ROM). Therefore, the optical device according to the present embodiment 100 can be compatible with a read-only optical disc. That is, the optical disc 100 according to the present embodiment can be reproduced by a reproduction-only information reproducing apparatus.

In the present embodiment, the end sector number of the RZone is assigned to the end portion on the inner peripheral side of the data area 115 under the control of the CPU 359 that constitutes a specific example of the “first control means” in the present invention. The disk drive 300 is instructed to set the address (that is, the address at the end of the data area 115 and the address at the end of the area where padding data is recorded). In accordance with this instruction, the disk drive 300 records “X3h”, which is the address of the inner peripheral end of the data area 115, in the RMD as the end sector number of the RZone under the control of the CPU 354.

[0085] Power! Thus, under the control of the CPU 359 that constitutes a specific example of the “update means” in the present invention, a partition descriptor (Partition Descriptor), an unlocated space descriptor (Unallocated Space Descriptor), etc. in the file system information The structure information is updated. Here, in addition to partition descriptors and unlocated space descriptors, all structures that need to be changed by setting the RZone end sector number to the address of the inner edge of the data area 115 It is preferable to update the information. That is, it is preferable to update all structure information that may cause inconsistencies by setting the end sector number of the RZone to the address of the end portion on the inner circumference side of the data area 115. Refer to UDF Specification (Revision 2.00) published by OSTA (Optical Storage Technology Association) for details of the structure information included in the file system information.

[0086] Power! In addition, under the control of the CPU 359 that constitutes a specific example of the “second control means” in the present invention, the end portion of the area portion where data has been recorded (that is, the area portion indicated by the LRA (Last Recorded Address)) ) Indication power to record various information that needs to be recorded (specifically, AVDP (Anchor Volume Descriptor Pointer) etc.) at the inner edge of the data area 115 of the LI layer Made against 300. In response to this instruction, the disk drive 300 stores various information that needs to be recorded at the end of the area where data has been recorded, under the control of the CPU 354, on the inner side of the data area 115 of the L1 layer. Record at the end of the. [0087] Thus, if the end sector number of RZone is read, the entire data area 115 of the L1 layer can be suitably recognized. If the end sector number of the RZone is not set to the address of the inner edge of the data area 115 after the compatibility process has been performed, the end sector number of the RZone is the data that has already been recorded. An end portion on the inner periphery side of the area 115 (specifically, “X2h” in FIG. 9B) is shown. For this reason, recording the padding data may cause inconvenience that the area portion of the data area 116 of the L1 layer where the data can be directly overwritten cannot be recognized. In other words, there may be an inconvenience that the area partial force with LBA “Xlh” in FIG. 9 (b) can be recognized as having only an area portion with LBA “X2h”. This is particularly noticeable in systems that support open disk operations for re-recording data on the optical disk 100 after performing compatibility processing. However, according to this embodiment, since the end sector number of the RZone is set to the address of the end on the inner circumference side of the data area 115 of the L1 layer, the V and system that does not support open disk operation. In addition, it is possible to preferably recognize the area portion of the data area 116 of the L1 layer, in which data can be directly overwritten by recording padding data. Therefore, the entire area of the optical disc 100 can be used effectively.

According to the present embodiment, the end sector number of RZone for managing the data recorded on the optical disc 100 on the disc drive 300 side and the data recorded on the optical disc 100 are stored in the host computer. Synchronization with the structure information for management on the 400 side can be suitably maintained. Therefore, even if the end zone number of RZone is set to the address of the inner edge of the data area 115 of the L1 layer during the compatibility process as described above, the data recorded on the optical disc 100 is logically There is no conflict with the file system information to be managed. Therefore, the above-described various benefits can be enjoyed while ensuring a suitable recording operation and reproducing operation.

[0089] In addition, the data has already been recorded even after the end sector number of the RZone is set to the address of the inner edge of the data area 115 of the L1 layer during the compatibility process as described above. Various information to be recorded at the end portion of the area portion can be suitably read. Therefore, The above-mentioned various benefits can be enjoyed while ensuring a suitable recording operation and reproducing operation.

Note that the recording operation of recording data in the L1 layer after recording data in the entire LO layer is performed on a VR (Video Recordin g) on a dual-layer DVD-RW, which is one specific example of the optical disc 100. ) When recording data in format. When recording data in a VR (Video Recording) format on a dual-layer DVD-RW, which is a specific example of the optical disc 100, the above-described various benefits can be suitably enjoyed. Of course, even when data is recorded on an optical disc other than a dual-layer DVD RW, or when data is recorded on a dual-layer DVD-RW in a format other than the VR format, If the recording operation for recording the data in the L1 layer is performed after the data is completely recorded, the above-described various benefits can be obtained by performing the operation of the above-described embodiment.

Further, in the above-described embodiment, the power described for the optical disc 100 as an example of the information recording medium and the recorder according to the optical disc 100 as an example of the information recording device. The present invention is not limited to the optical disc and the recorder. The present invention can also be applied to other high-density recording or various information recording media compatible with high transfer rates and their recorders.

[0092] The present invention is not limited to the above-described embodiments, but can be appropriately modified within the scope of the claims and the entire specification without departing from the gist or concept of the invention which can be read. An information recording apparatus and method, and a computer program are also included in the technical scope of the present invention.

Industrial applicability

The information recording apparatus and method, the computer program, and the information recording medium according to the present invention can be used for an information recording apparatus such as a DVD recorder. Further, the present invention can also be used for information recording devices that are mounted on or connectable to various computer equipment for consumer use or business use.

Claims

The scope of the claims

[1] Recording means for recording the user data on an information recording medium having a first recording layer and a second recording layer each having a user data area capable of recording user data, and the user data in the user data area Setting means for setting the recording zone end address indicating the end of the recorded area portion;

As a result of carrying out the interchange processing for compatibility with the information recording medium for reproduction only with respect to the information recording medium, the entire user data area of each of the first recording layer and the second recording layer is obtained. A first control means for controlling the setting means to set the end address of the recording zone to the address of the end of the user data area of the second recording layer.

An information recording apparatus comprising:

[2] In response to setting the end address of the recording zone to the end address of the user data area of the second recording layer, the information of the user data area on the information recording medium included in the file system information 2. The information recording apparatus according to claim 1, further comprising updating means for updating structure information indicating a recording state.

[3] In response to setting the end address of the recording zone to the address of the end of the user data area of the second recording layer, information to be recorded at the end of the area where the user data has been recorded 2. The information recording apparatus according to claim 1, further comprising second control means for controlling the recording means so as to record at an end portion of the user data area of the second recording layer.

[4] The recording means records the user data in the user data area of the second recording layer after recording the user data in the entire user data area of the first recording layer. The information recording apparatus according to claim 1, wherein

[5] A recording step of recording user data on an information recording medium including a first recording layer and a second recording layer each having a user data area capable of recording user data;

A setting step of setting a recording zone end address indicating an end portion of an area portion where the user data is recorded in the user data area;

The information recording medium is compatible with a read-only information recording medium. If the entire user data area of each of the first recording layer and the second recording layer has been recorded as a result of the conversion process, the recording zone end address is set to the second recording layer. A first control step of controlling the setting step so as to set the address of the end of the user data area

An information recording method comprising:

[6] A computer program for recording control for controlling a computer provided in the information recording apparatus according to claim 1, comprising: the recording unit; the setting unit; and the first control. A computer program characterized by functioning as at least a part of the means.

[7] An information recording system comprising the information recording device according to claim 1.