JP2012038386A - Recording medium, recording device and method, recording reproducer and method, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording medium that has a reproduction exclusive area and a recordable area and is capable of preventing data recorded in the recordable area from being unintentionally deleted or overwritten.SOLUTION: A recording medium includes a reproduction exclusive area (20, 203) and a recordable area (21, 213) in which data can be recorded. In the reproduction exclusive area, identification information (260, 261) to identify a recording device that is allowed to record specific data (271) in the recordable area is recorded.

Description

  The present invention relates to a recording medium such as a DVD or a Blu-ray Disc, a recording apparatus and method for performing a recording operation on the recording medium, a recording / reproducing apparatus and method for performing a recording operation and a reproducing operation on the recording medium, The present invention also relates to the technical field of computer programs that cause a computer to function as such a recording apparatus or recording / reproducing apparatus.

  For example, as a recording medium such as a CD, a DVD, or a Blu-ray Disc (BD), a multilayer recording medium in which a plurality of recording layers are stacked on the same substrate has been developed. More specifically, a multi-layer DVD-ROM or BD-ROM in which read-only recording layers are stacked, and a multi-layer type in which recordable (specifically write-once) recording layers are stacked. DVD-R and BD-R, and multi-layer DVD-RW and BD-RE in which recordable (specifically, rewritable) recording layers are stacked have been developed.

  On the other hand, as disclosed in Patent Document 1, development of a recording medium (a so-called intra hybrid disk) in which a plurality of different types of recording layers conforming to the same standard is laminated is also underway. Examples of such an intra-hybrid disc include a recording medium in which a read-only recording layer compliant with the BD standard and a rewritable recording layer compliant with the BD standard are stacked, and a read-only recording compliant with the DVD standard. An example is a recording medium in which a layer and a rewritable recording layer conforming to the DVD standard are stacked.

JP 2002-56543 A

  Such an intra-hybrid disc is assumed to be sold in a state where data such as photographs and illustrations are recorded in advance on a read-only recording layer. On the other hand, it is assumed that the recordable recording layer of the intra hybrid disc is handled in the same manner as a normal recordable optical disc, for example. Accordingly, a recording device loaded with an intra hybrid disc reads or reproduces data recorded in advance on a read-only recording layer, records arbitrary data on a recordable recording layer, Any data recorded in the recording layer can be read or reproduced.

  In the recordable recording layer, data unique to or unique to the recording apparatus can be recorded as arbitrary data. For example, it is possible to record unique data that specifies, refers to, or uses a part of normal data (or common data) recorded in a recordable recording layer. More specifically, for example, in the recordable recording layer, AV content data is recorded, and unique data for specifying a part of the AV content data (for example, digest reproduction) is recorded. be able to.

  However, assuming the use of recording original data on a recordable recording layer in addition to such normal data, the following technical problems may occur.

  Specifically, the unique data described above is data unique to the recording apparatus that records the unique data. Therefore, a recording device other than the recording device that recorded the unique data may not be able to read the unique data. In other words, in recording devices other than the recording device that records the unique data, a part of normal data recorded on the recordable recording layer is specified or referred to by the unique data. Or it may not be recognized that it is being used. For this reason, when the intra hybrid disc is loaded into another recording device, the other recording device specifies or references unique data when recording data on the recordable recording layer. Doing so may erase or overwrite some of the normal data used. In this case, when the intra-hybrid disc is loaded again on the recording device that has recorded the original data, a part of the normal data that is specified, referred to, or used by the original data is erased or overwritten. Therefore, the operation using the original data is not properly executed.

  The technical problem described above may occur not only in an intra-hybrid disc, but also in a recording medium including a read-only area (play-only area) and a recordable area (recordable area).

  The present invention has been made in view of, for example, the above-described conventional problems, and prevents unintentional erasure or overwriting of data recorded in the recordable area while having, for example, a reproduction-only area and a recordable area. Recording medium, recording apparatus and method for performing recording operations on such recording medium, recording / reproducing apparatus and method for performing recording operations and reproducing operations on such recording medium, and computer It is an object to provide a computer program that operates as a recording / reproducing apparatus.

  The above-described problem includes a reproduction-only area and a recordable area where data can be recorded, and the reproduction-only area identifies a recording device that is permitted to record specific data in the recordable area. This can be solved by a recording medium on which identification information for recording is recorded.

  The object is a recording apparatus that performs a recording operation on the recording medium, the reading means for reading the identification information recorded in the reproduction-only area, the identification information read by the reading means, and the recording apparatus Determination means for determining whether the recording device is a recording device that is permitted to record the specific data in the recordable area based on both of the identification information, and the recording device, When it is determined that the recording device is allowed to record the specific data in the recordable area, the recording device includes a recording unit that records the specific data in the recordable area. obtain.

  The above-described problem is a recording method for performing a recording operation on the above-described recording medium, the reading step for reading the identification information recorded in the reproduction-only area, the identification information read in the reading step, and the recording method A determination step of determining whether the recording device is a recording device that is permitted to record the specific data in the recordable area, based on both identification information of the recording device that executes A recording step of recording the specific data in the recordable area when it is determined that the recording apparatus is a recording apparatus that is permitted to record the specific data in the recordable area; It can be solved by the recording method.

  The above problem can be solved by a recording / reproducing apparatus including the above-described recording apparatus and reproducing means for performing a reproducing operation on the recording medium.

  The above-described problem can be solved by a recording / reproducing method including the above-described recording method and a reproducing step for performing a reproducing operation on the recording medium.

  The above-described problem can be solved by a computer program for controlling a computer provided in the above-described recording apparatus, which causes the computer to function as the reading unit, the determining unit, and the recording unit.

  The above-described problem can be solved by a computer program for controlling a computer provided in the above-described recording / reproducing apparatus, which causes the computer to function as the recording apparatus and the reproducing unit.

  The operation and other advantages of the present invention will become apparent from the embodiments described below.

It is the schematic plan view which showed the structure of the optical disk based on a present Example. 1 is a schematic plan view showing a structure of an optical disc according to an embodiment, and is a schematic conceptual diagram of a recording area structure in a radial direction of the optical disc. It is a data structure figure which shows the data structure on an optical disk. It is a data structure figure which shows the data structure of identifier data. It is a block diagram which shows notionally the structure of the recording / reproducing apparatus of a present Example. It is a flowchart which shows notionally the flow of operation | movement of the recording / reproducing apparatus of a present Example. It is a data structure figure which shows the data structure on the optical disk produced by operation | movement of the recording / reproducing apparatus of a comparative example.

  Hereinafter, description of embodiments of the recording medium, the recording apparatus and method, the recording / reproducing apparatus and method, and the computer program will proceed.

(Embodiment of recording medium)
The embodiment of the recording medium includes a reproduction-only area and a recordable area in which data can be recorded, and the reproduction-only area allows recording of specific data in the recordable area. Identification information for identifying the device is recorded.

  According to the embodiment of the recording medium, it has a reproduction-only area where data can be reproduced and a recordable area where data can be recorded and reproduced. Note that the read-only area and the recordable area may be arranged on the same recording layer, or may be arranged on different recording layers. In the reproduction-only area, predetermined data is recorded in advance using, for example, embossed pits. That is, it is preferable that data cannot be recorded in the reproduction-only area, for example, by a recording device described later. Arbitrary data is recorded in the recordable area. That is, arbitrary data may be additionally written or overwritten in the recordable area by, for example, a recording apparatus described later.

  In the recording medium of the present embodiment, identification information is recorded in advance in the reproduction-only area. The identification information is information for identifying a recording device that is permitted to record specific data in the recordable area. In other words, the identification information is information for identifying a recording device that is prohibited from recording specific data in the recordable area.

  Therefore, the recording apparatus loaded with the recording medium can determine whether or not recording of specific data in the recordable area is permitted by referring to the identification information. Therefore, a recording apparatus that is permitted to record specific data in the recordable area can record specific data in the recordable area. On the other hand, a recording apparatus that is not permitted to record specific data in the recordable area cannot record specific data in the recordable area. Therefore, according to the recording medium of the present embodiment, for example, unintentional erasure or overwriting of data (for example, specific data) recorded in the recordable area can be prevented.

  In another aspect of the recording medium of the present embodiment, the specific data recorded in the recordable area is AV content.

  According to this aspect, as will be described in detail later, unintentional erasure or overwriting of AV content that is specific data can be prevented.

  In another aspect of the recording medium of the present embodiment, the identification information is recorded as a file that can be recognized by a file system used by the recording device.

  According to this aspect, not only reading of identification information from hardware called a recording apparatus but also reading of identification information from software that implements the recording apparatus is suitably performed. Therefore, it is possible to prevent unintentional erasure or overwriting of data (for example, specific data) recorded in the recordable area regardless of whether the recording device is configured by hardware or software. it can.

  In another aspect of the recording medium of the present embodiment, the identification information includes manufacturer identification information for identifying a manufacturer of the recording apparatus and apparatus identification information for identifying the recording apparatus for each manufacturer.

  According to this aspect, the manufacturer of the recording apparatus can be quickly identified by reading the manufacturer identification information. Therefore, the recording apparatus can be identified relatively quickly. In addition, the recording device in the manufacturer identified by reading the device identification information can be quickly identified. Therefore, it is possible to freely assign device identification information within the same manufacturer without considering duplication of device identification information with other manufacturers, and a recording device within the same manufacturer. Grouping becomes easier.

(Embodiment of recording apparatus)
An embodiment of the recording apparatus is a recording apparatus that performs a recording operation on the recording medium of the present embodiment (including various aspects thereof), and a reading unit that reads the identification information recorded in the reproduction-only area. Whether the recording device is permitted to record the specific data in the recordable area based on both the identification information read by the reading unit and the identification information of the recording device. Determining means for determining whether the recording device is a recording device that is permitted to record the specific data in the recordable area; Recording means for recording data.

  According to the embodiment of the recording apparatus, by referring to (for example, comparing) the identification information recorded in advance in the reproduction-only area (that is, the identification information read by the reading unit) and the identification information of the recording apparatus itself. Whether or not recording of specific data in the recordable area is permitted can be determined. Therefore, the recording apparatus can record specific data in the recordable area when it is determined that recording of specific data in the recordable area is permitted. On the other hand, the recording device cannot record specific data in the recordable area if the recording device is not permitted to record specific data in the recordable area. Therefore, for example, unintentional erasure or overwriting of data (for example, specific data) recorded in the recordable area can be prevented.

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

  In another aspect of the recording apparatus of the present embodiment, when it is determined that the recording apparatus is not a recording apparatus that is permitted to record the specific data in the recordable area, the recording unit includes the recording unit, The specific data is not recorded in the recordable area.

  According to this aspect, when it is determined that recording of specific data in the recordable area is not permitted, the recording apparatus cannot record specific data in the recordable area. For this reason, for example, unintentional erasure or overwriting of data (for example, specific data) recorded in the recordable area can be more suitably prevented.

(Embodiment of recording method)
An embodiment of a recording method is a recording method for performing a recording operation on the above-described recording medium embodiments (including various aspects thereof), and reading the identification information recorded in the reproduction-only area And the recording apparatus is permitted to record the specific data in the recordable area based on both the identification information read in the reading step and the identification information of the recording apparatus that executes the recording method. A determination step of determining whether or not the recording device is a recording device, and the recording device when the recording device is determined to be a recording device that is permitted to record the specific data in the recordable area. A recording step of recording the specific data in a possible area,
According to the embodiment of the recording method, the same effects as the various effects that can be enjoyed by the above-described embodiment of the recording apparatus can be enjoyed.

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

(Embodiment of recording / reproducing apparatus)
The embodiment of the recording / reproducing apparatus includes the recording apparatus of the above-described embodiment (including various aspects thereof) and reproducing means for performing a reproducing operation on the recording medium.

  According to the embodiment of the recording / reproducing apparatus, the reproducing operation for the recording medium can be performed while enjoying the same effects as the various effects that can be enjoyed by the above-described embodiment of the recording apparatus.

  Incidentally, in response to the various aspects in the embodiment of the recording apparatus described above, the embodiment of the recording / reproducing apparatus can also adopt various aspects.

(Embodiment of recording / reproducing method)
An embodiment of the recording / reproducing method includes the recording method of the above-described embodiment (including various aspects thereof) and a reproducing step of performing a reproducing operation on the recording medium.

  According to the embodiment of the recording / reproducing method, the reproducing operation for the recording medium can be performed while enjoying the same effects as the various effects that can be enjoyed by the above-described embodiment of the recording method.

  Incidentally, in response to the various aspects in the above-described recording method embodiment, the recording / reproducing method embodiment can also adopt various aspects.

(Embodiment of computer program)
A first embodiment of a computer program is a computer program for controlling a computer provided in the above-described embodiment of the recording apparatus (including various aspects thereof), and the computer program includes the reading unit and the determining unit. And function as the recording means.

  According to the first embodiment of the computer program, the computer program is read from a recording medium such as a ROM, CD-ROM, DVD-ROM, and hard disk that stores the computer program and executed by the computer, or the computer program If the computer program is downloaded to the computer via the communication means and then executed, the above-described embodiment of the recording apparatus can be realized relatively easily.

  Incidentally, in response to the various aspects of the above-described embodiment of the recording apparatus, the first embodiment of the computer program can also adopt various aspects.

  The second embodiment of the computer program is a computer program for controlling a computer provided in the above-described embodiment of the recording / reproducing apparatus (including various aspects thereof), and the computer program includes the recording apparatus and the reproducing apparatus. It functions as a means.

  According to the second embodiment of the computer program, the computer program is read from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, and a hard disk that stores the computer program, and is executed. If the computer program is executed after being downloaded to the computer via the communication means, the above-described embodiment of the recording / reproducing apparatus can be realized relatively easily.

  Incidentally, the second embodiment of the computer program can take various aspects in response to various aspects in the above-described embodiment of the recording / reproducing apparatus.

(Embodiment of computer program product)
The first embodiment of the computer program product clearly embodies program instructions that can be executed by a computer provided in the above-described embodiment of the recording apparatus (including various aspects thereof), and the reading means is the computer. And function as the determination means and the recording means.

  According to the first embodiment of the computer program product, the computer program product is read into a computer from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk that stores the computer program product, or, for example, transmitted. If the computer program product, which is a wave, is downloaded to a computer via communication means, the above-described embodiment of the recording apparatus can be implemented relatively easily. More specifically, the computer program product may be configured with computer-readable code (or computer-readable instructions) that causes the above-described recording apparatus to function.

  Incidentally, the first embodiment of the computer program product can also take various aspects in response to the various aspects in the embodiments related to the recording apparatus described above.

  The second embodiment of the computer program product clearly embodies program instructions that can be executed by a computer provided in the above-described embodiments of the recording / reproducing apparatus (including various aspects thereof). It functions as an apparatus and the reproducing means.

  According to the second embodiment of the computer program product, if the computer program product is read into a computer from a recording medium such as a ROM, a CD-ROM, a DVD-ROM, or a hard disk storing the computer program product, or transmitted, for example, If the computer program product, which is a wave, is downloaded to a computer via communication means, the above-described embodiment of the recording / reproducing apparatus can be implemented relatively easily. More specifically, the computer program product may be configured with computer-readable code (or computer-readable instructions) that functions as the above-described embodiment of the recording / reproducing apparatus.

  Incidentally, the second embodiment of the computer program product can also take various aspects in response to the various aspects in the above-described embodiment relating to the recording / reproducing apparatus.

  Such an operation and other advantages of the present embodiment will be further clarified from examples described below.

  As described above, the embodiment of the recording medium includes the reproduction-only area and the recordable area, and identification information is recorded in the reproduction-only area. The embodiment of the recording apparatus includes a reading unit, a determination unit, and a recording unit. The embodiment of the recording apparatus includes a reading process, a determination process, and a recording process. The embodiment of the recording method includes a reading process, a determination process, and a recording process. The embodiment of the recording / reproducing apparatus includes the embodiment of the recording apparatus and reproducing means. The embodiment of the recording / reproducing method includes the embodiment of the recording method and a reproducing step. The first embodiment of a computer program causes a computer to function as an embodiment of a recording device. The second embodiment of the computer program causes a computer to function as an embodiment of a recording / reproducing apparatus. Accordingly, unintentional erasure or overwriting of data (for example, specific data) recorded in the recordable area can be prevented.

  Embodiments of the present invention will be described below with reference to the drawings.

(1) Recording Medium First, with reference to FIG. 1 to FIG. 4, description will be given on an optical disc 11 that is an example of a recording medium.

(1-1) Structure of Optical Disc First, with reference to FIG. 1 and FIG. 2, the structure of an optical disc 11 that is an example of a recording medium will be described. FIG. 1 is a schematic plan view showing the structure of the optical disc 11. FIG. 2 is a schematic sectional view of the optical disc 11 and a schematic conceptual diagram of the recording area structure in the radial direction associated therewith.

  As shown in FIG. 1 and FIG. 2, the optical disc 11 has, for example, lead-in areas 201 and 211, data areas 203 and 213 on the recording surface on the disc body having a diameter of about 12 cm, with the center hole 22 as the center. , And lead-out areas 205 and 215. In the optical disk 11, a recording layer or the like is laminated between the cover layer 23 and the transparent substrate 24. In each recording area of the recording layer, for example, tracks such as a groove track and a land track are alternately provided spirally or concentrically around the center hole 22. 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.

  In particular, as shown in FIG. 2, the optical disc 11 has, for example, a transparent substrate 24 on which a ROM layer 20 and an RE layer 21 constituting an example of a “recording layer” are laminated, and a transparent cover layer 23 is further formed thereon. It has a laminated structure. At the time of recording / reproduction of such a two-layer type optical disc 11, the ROM layer 20 is selected depending on which recording layer the focusing position of the laser beam LB irradiated from the lower side to the upper side in FIG. The data is reproduced or recorded on the RE layer 21.

  The ROM layer 20 includes a lead-in area 201, a data area 203, and a lead-out area 205 from the inner peripheral side (left side in FIG. 2) to the outer peripheral side (right side in FIG. 2). In the lead-in area 201, control data or management data for controlling or managing data recorded in advance in the data area 203, other dummy data, and the like are recorded in advance. Arbitrary data is recorded in the data area 203 in advance. The data structure in the data area 203 will be described later in detail (see FIGS. 3 to 4). In the lead-out area 205, control data or management data for controlling or managing data recorded in advance in the data area 203, other dummy data, and the like are recorded in advance. Since the ROM layer 20 is a read-only recording layer, various data are recorded in advance in each of the lead-in area 201, the data area 203, and the lead-out area 205 using, for example, embossed pits.

  The RE layer 21 includes a lead-in area 211, an ISA (Inner Spare Area) 212, and a data area from the inner peripheral side (left side in FIG. 2) to the outer peripheral side (right side in FIG. 2). 213, an OSA (Outer Spare Area) 214, and a lead-out area 215. In the lead-in area 211, control data or management data for controlling or managing data recorded in the data area 213, other dummy data, and the like are appropriately recorded. In each of the ISA 212 and the OSA 214, defect management information for managing a defect occurring in the data area 213 is appropriately recorded, or data recorded or to be recorded in the area where the defect has occurred is alternatively used. To be recorded. Arbitrary data is appropriately recorded in the data area 213. The data structure in the data area 213 will be described in detail later (see FIGS. 3 to 4). In the lead-out area 215, control data or management data for controlling or managing data recorded in the data area 213, other dummy data, and the like are appropriately recorded. Since the RE layer 21 is a rewritable recording layer, marks formed by, for example, laser light irradiation are formed on each of the lead-in area 211, the ISA 212, the data area 213, the OSA 214, and the lead-out area 215. Used to record various data.

  In the present embodiment, the optical disc 11 is preferably an optical disc (so-called intra hybrid disc) in which a plurality of recording layers of different types conform to the same family standard and are laminated. In other words, the standard that the ROM layer 20 should comply with is preferably the same family standard as the standard that the RE layer 21 should comply with. More specifically, for example, when the ROM layer 20 conforms to the BD standard, the RE layer 21 also preferably conforms to the BD standard. Similarly, for example, when the ROM layer 20 conforms to the DVD standard, the RE layer 21 also preferably conforms to the DVD standard. Of course, the same applies not only to the BD standard and the DVD standard, but also to other standards. In the following description, the case where both the ROM layer 20 and the RE layer 21 conform to the BD standard will be described as an example. However, the optical disk 11 may be an optical disk (a so-called inter-hybrid disk) in which a plurality of recording layers of different types comply with different family standards.

  In this embodiment, it is preferable that the types of the two recording layers provided in the optical disc 11 are different. However, the two recording layers of the optical disc 11 may be the same type. In this embodiment, the optical disk 11 including the ROM layer 20 that is a read-only recording layer and the RE layer 21 that is a rewritable recording layer capable of recording data a plurality of times is taken as an example. Proceed with the explanation. However, the optical disc 11 may include, for example, a read-only recording layer and a write-once recording layer capable of recording data only once. Alternatively, the optical disc 11 may include a write-once recording layer that can record data only once and a rewritable recording layer that can record data multiple times.

  The track path direction in the ROM layer 20 may be the same as or different from the track path direction in the RE layer 21. In the present embodiment, description will be given by taking as an example the optical disk 11 in which the track path direction in the ROM layer 20 and the track path direction in the RE layer 21 are directions from the inner peripheral side toward the outer peripheral side.

  The optical disc 11 shown in FIGS. 1 and 2 has two recording layers (that is, the ROM layer 20 and the RE layer 21). However, the optical disk 11 may have three or more recording layers.

(1-2) Specific Data Structure Next, a specific data structure on the optical disc 11 will be described with reference to FIG. FIG. 3 is a data structure diagram showing the data structure on the optical disc 11.

  As shown in FIG. 3, in the data area 203 of the ROM layer 20, a ROM data file 250 and a recorder identifier file 260, which is an example of “identification information”, are recorded in advance.

  The ROM data file 250 includes data to be reproduced (in other words, read) by the recording / reproducing apparatus 1 that loads the optical disk 11. In the example illustrated in FIG. 3, the ROM data file 250 includes JPEG data (in other words, still image data) such as an image or an illustration as data to be reproduced by the recording / reproducing apparatus 1.

  The recorder identifier file 260 includes identifier data 261 that identifies the recording / reproducing apparatus 1 in which recording of specific data in the data area 213 of the RE layer 21 is permitted or prohibited. As specific data, for example, data recorded in the data area 213 of the RE layer 21 and undesired erasure or overwriting is not preferable. In other words, as the specific data, data recorded in the data area 213 in the data area of the RE layer 21 and a part of which is specified by the unique menu file described later is given as an example. In the following, description will be given using BD-AV data 271 described later as an example of specific data.

  As shown in FIG. 3, a user data file 270 and a unique menu file 280 are appropriately recorded in the data area 21 of the RE layer 21.

  The user data file 270 may include data to be reproduced or recorded by the recording / reproducing apparatus 1 that loads the optical disc 11. For example, in the example illustrated in FIG. 3, the user data file 270 includes BD-AV data (in other words, AV content data) 271 as data to be reproduced or recorded by the recording / reproducing apparatus 1 that loads the optical disc 11. .

  The BD-AV data 271 is data conforming to, for example, the BD-AV standard, and is a recording / reproducing apparatus that loads moving image data 272 such as MPEG data and a common menu related to the moving image data 272 and loads the optical disc 11. 1 includes common menu data 273 indicating a common menu that can be commonly used. Note that examples of the common menu indicated by the common menu data 273 include a menu for specifying a title (in other words, a program) included in the moving image data 272, and the like. In other words, as a common menu indicated by the common menu data 273, a menu indicating that title # 1 to title # 2 (or title #n: where n is an integer equal to or greater than 1) is recorded in the video data 272. Etc. are examples.

  The unique menu file 280 is a unique menu related to the moving image data 272 and indicates a unique menu unique to the recording / reproducing apparatus 1 that records the unique menu file 280 (in other words, unique). In other words, the unique menu file 280 indicates a unique menu that cannot be used by other recording / playback apparatuses 1 other than the recording / playback apparatus 1 that recorded the unique menu file 280. As an example of the unique menu indicated by the unique menu file 280, for example, a menu for specifying a part of the moving image indicated by the moving image data 272 (for example, a scene of a moving image or a still image) is given as an example. More specifically, as an example of the unique menu indicated by the unique menu file 280, for example, a menu for digest reproduction of a specific part of the moving image indicated by the moving image data 272 or a specific appearance appearing in the moving image indicated by the moving image data 272, for example. An example is a menu for reproducing a person's scene. Therefore, the unique menu file 280 includes partial reproduction data 281 for specifying data used by the unique menu file 280 in the moving image data 272. For example, the partial reproduction data 281 includes information (for example, an address (for example, a combination of a start address and an end address)) that specifies a part of the moving image data 272 (for example, the hatched portion illustrated in FIG. 3). Therefore, the recording / reproducing apparatus 1 using the unique menu uses the unique menu by reading a part of the moving image data 272 recorded in the data area 213 of the RE layer 21 after referring to the partial reproduction data 281. be able to.

  In the present embodiment, specific data (for example, BD-AV data 271) for the data area 213 of the RE layer 21 is determined according to the comparison result between the identifier data 261 in the recorder identification file 260 and the identifier of the recording / reproducing apparatus 1. Recording is permitted or prohibited. This operation will be described in detail later with reference to the flowchart shown in FIG.

  Note that the above-described data structure is an example, and it goes without saying that other data or other files than the above-described data or files may be recorded in the ROM layer 20 and the RE layer 21, respectively.

(1-3) Data Structure of Identifier Data Next, the data structure of the identifier data 261 shown in FIG. 3 will be described with reference to FIG. FIG. 4 is a data structure diagram showing the data structure of the identifier data 261.

  As shown in FIG. 4, the identifier data 261 includes a plurality of identifier records 262. 4 illustrates an example in which the identifier data 261 includes a plurality of identifier records 262, the identifier data 261 may include only one identifier record 262.

  Each identifier record 262 indicates an identifier of the recording / reproducing apparatus 1 that is allowed to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. However, each identifier record 262 may indicate an identifier of the recording / reproducing apparatus 1 in which recording of data (for example, BD-AV data 271) in the data area 213 of the RE layer 21 is prohibited. In any case, each identifier record 262 includes information that can identify the recording / reproducing apparatus 1 that is allowed to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. . In the following, description will be given using an example in which the identifier record 262 indicates the identifier of the recording / reproducing apparatus 1 that is allowed to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. .

  Each identification record 262 includes an identifier length 263, a manufacturer identifier 264, and a device identifier 265.

  The identifier length 263 indicates the data size (for example, the number of bytes or the number of bits) of the manufacturer identifier 264 and the device identifier 265.

  The manufacturer identifier 264 indicates an identifier assigned individually to the manufacturer (maker) of the recording / reproducing apparatus 1. Therefore, the manufacturer identifier 264 indicates an identifier that is individually assigned to the manufacturer of the recording / playback apparatus 1 that is permitted to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. However, as described above, it is possible to identify the recording / reproducing apparatus 1 that is permitted to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. The identifier 264 may indicate an identifier that is individually assigned to the manufacturer of the recording / reproducing apparatus 1 in which recording of data (for example, BD-AV data 271) in the data area 213 of the RE layer 21 is prohibited. Note that different manufacturer identifiers 264 are assigned to different manufacturers.

  The device identifier 265 indicates an identifier uniquely assigned to the recording / reproducing apparatus 1 within the manufacturer of the recording / reproducing apparatus 1. For this reason, the device identifier 265 is set in the manufacturer of the recording / reproducing device 1 with respect to the recording / reproducing device 1 that is permitted to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. Indicates a uniquely assigned identifier. However, as described above, it is necessary to identify the recording / reproducing apparatus 1 that is permitted to record data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. The identifier 265 is uniquely assigned within the maker of the recording / reproducing apparatus 1 to the recording / reproducing apparatus 1 in which recording of data (for example, BD-AV data 271) in the data area 213 of the RE layer 21 is prohibited. An identifier may be indicated. Note that the same device identifier 265 may be assigned to each recording / reproducing device 1 of a plurality of different manufacturers. However, since the manufacturer identifiers 264 of the recording / reproducing apparatuses 1 of different manufacturers are different, the recording / reproducing apparatuses 1 of both can be identified.

  Needless to say, the data structure of the identifier data 261 shown in FIG. 4 is an example. Therefore, the identifier data 261 may have a data structure different from the example shown in FIG. For example, the identifier data 261 may include one identifier unique to each recording / reproducing device 1 without distinguishing the manufacturer identifier 264 and the device identifier 265.

(2) Recording / Reproducing Device (2-1) Configuration of Recording / Reproducing Device Next, the configuration of the recording / reproducing device 1 as an embodiment of the recording device and the recording / reproducing device will be described with reference to FIG. FIG. 5 is a block diagram conceptually showing the structure of the recording / reproducing apparatus 1 of the present embodiment. The recording / reproducing apparatus 1 has a function of recording various data on the optical disc 11 and a function of reproducing various data recorded on the optical disc 11.

  As shown in FIG. 5, the recording / reproducing apparatus 1 includes a disk drive 300 on which an optical disk 11 is actually loaded and data is recorded and reproduced, and a personal computer that controls data recording and reproduction on the disk drive 300. And a host computer 400 such as a computer.

  The disk drive 300 includes an optical disk 11, a spindle motor 351, an optical pickup 352, a signal recording / reproducing unit 353, a CPU (drive control unit) 354, a memory 355, a data input / output control unit 306, and a bus 357. The host computer 400 includes a CPU 359, a memory 360, an operation / display control unit 307, an operation button 310, a display panel 311, a data input / output control unit 308, and a bus 358.

  The spindle motor 351 rotates and stops the optical disc 11 and operates when accessing the optical disc 11. More specifically, the spindle motor 351 is configured to rotate and stop the optical disc 11 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 device and a lens in order to perform recording / reproduction on the optical disc 11. More specifically, the optical pickup 352 irradiates the optical disk 11 with a light beam such as a laser beam at a first power as a read light during reproduction and modulates with a second power as a write light at the time of recording. Irradiate.

  The signal recording / reproducing means 353 constitutes one specific example of “reading means”, “recording means”, and “reproducing means” in the present invention together with the CPU 354 and the CPU 359, and controls the spindle motor 351 and the optical pickup 352. Recording / reproduction with respect to the optical disk 11 is performed. More specifically, the signal recording / reproducing means 353 is constituted by, for example, a laser diode driver (LD driver) and a head amplifier. The laser diode driver drives a semiconductor laser (not shown) 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.

  The memory 355 is used in 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 for conversion to data usable by the signal recording / reproducing means 353. The memory 355 stores a program for performing operations as these recorder devices, that is, a ROM area in which firmware is stored, a buffer for temporarily storing recording / playback data, and variables necessary for the operation such as a firmware program. It consists of a RAM area and the like.

  The 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, software or firmware for operating the CPU 354 is stored in the memory 355.

  The data input / output control unit 306 controls external data input / output to / from the disk drive 300 and stores and retrieves data from / in the data buffer on the memory 355. A drive control command issued from an external host computer 400 connected to the disk drive 300 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 400 via the data input / output control means 306.

  The operation / display control means 307 receives and displays an operation instruction with respect to the host computer 400, and transmits an instruction by the operation button 310 such as recording or reproduction to the CPU 359.

  The CPU 359 constitutes a specific example of “determination unit”, and based on instruction information from the operation / display control unit 307, a control command (command) is sent to the disk drive 300 via the data input / output unit 308. ) To control the entire disk drive 300. Similarly, the CPU 359 can transmit a command requesting the disk drive 300 to transmit the operation state to the host. Thus, since the operation state of the disk drive 300 such as recording or reproduction can be grasped, the CPU 359 outputs the operation state of the disk drive 300 to the display panel 311 such as a fluorescent tube or an LCD via the operation / display control means 307. be able to.

  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, variables necessary for the operation of an application program, etc. Is constituted by a RAM area or the like in which is stored. Further, it may be connected to an external storage device such as a hard disk (not shown) via the data input / output control means 308.

  The memory 360 stores the identifier 320 of the recording / reproducing apparatus 1 itself. However, the identifier 320 of the recording / reproducing apparatus 1 itself may be stored in a place other than the memory 360.

(3-2) Operation of Recording / Reproducing Device Next, the operation of the recording / reproducing device 1 of the present embodiment will be described with reference to FIG. FIG. 6 is a flowchart conceptually showing a flow of operations of the recording / reproducing apparatus 1 in the embodiment.

  As shown in FIG. 6, first, the optical disc 11 is loaded onto the recording / reproducing apparatus 1 (step S101).

  Subsequently, the identifier data 261 included in the recorder identifier file 260 is acquired from the optical disc 11 by the signal recording / reproducing means 353 operating under the control of the CPU 359 (step S102). Following the operation of step S102, in parallel or before or after the operation, the CPU 359 causes the recording / reproducing apparatus 1 to store the identifier 320 (that is, the manufacturer identifier 264 and the apparatus identifier described above) from the memory 360 of the recording / reproducing apparatus 1. The identifier 320 including 265 is acquired (step S103).

  Subsequently, the operation of the CPU 359 determines whether or not the identifier 320 acquired in step S103 is included in the identifier data 261 acquired in step S102 (step S104). That is, it is determined whether or not the identifier 320 acquired in step S103 matches the combination of the manufacturer identifier 264 and the device identifier 265 included in the identifier data 261 acquired in step S102 (step S104). . In other words, the recording / reproducing apparatus 1 having the identifier 320 acquired in step S103 (that is, the recording / reproducing apparatus 1 loaded with the optical disc 11) performs specific data (for example, BD-AV data) for the data area 213 of the RE layer 21. It is determined whether or not the recording / reproducing apparatus 1 is allowed to perform the recording of (271) (step S104).

  As a result of the determination in step S104, when it is determined that the identifier 320 acquired in step S103 is included in the identifier data 261 acquired in step S102 (step S104: Yes), the optical disc 11 is loaded. The recorded / reproducing apparatus 1 is determined to be the recording / reproducing apparatus 1 that is permitted to record the BD-AV data 271 in the data area 213 of the RE layer 21. Therefore, recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is permitted under the control of the CPU 359 (step S105). Therefore, the recording / reproducing apparatus 1 records the BD-AV data 271 on the RE layer 21 in addition to the reproduction of arbitrary data recorded on the ROM layer 20 and the reproduction of arbitrary data recorded on the RE layer 21 ( Further, any other data can be recorded) (step S106).

  On the other hand, as a result of the determination in step S104, if it is determined that the identifier 320 acquired in step S103 is not included in the identifier data 261 acquired in step S102 (step S104: No), the optical disc 11 is determined to be a recording / reproducing apparatus 1 that is not permitted to record the BD-AV data 271 in the data area 213 of the RE layer 21. Therefore, recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is prohibited under the control of the CPU 359 (step S107). Accordingly, the recording / reproducing apparatus 1 can reproduce arbitrary data recorded in the ROM layer 20 and arbitrary data recorded in the RE layer 21 (step S108). On the other hand, the recording / reproducing apparatus 1 cannot record the BD-AV data 271 on the RE layer 21 (step S106). Note that it is preferable that the recording / reproducing apparatus 1 is also unable to record any data other than the BD-AV data 271 on the RE layer 21. However, the recording / reproducing apparatus 1 may record any data other than the BD-AV data 271 on the RE layer 21.

  As described above, according to the present embodiment, the recording / reproducing apparatus 1 refers to the identifier data 261 to store specific data (for example, BD-AV data 271) in the data area 213 of the RE layer 21. It can be determined whether or not recording is permitted. Accordingly, when it is determined that recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is permitted, the recording / reproducing apparatus 1 performs the BD-AV data on the data area 213 of the RE layer 21. 271 can be recorded. On the other hand, when the recording / reproducing apparatus 1 does not determine that the recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is permitted, the recording / reproducing apparatus 1 performs the BD-AV data on the data area 213 of the RE layer 21. 271 cannot be recorded.

  Here, as a comparative example of the present embodiment, it is not determined whether or not recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is permitted (or a recording medium in which the identifier data 261 is not recorded). The operation of the recording / reproducing apparatus (which performs a recording operation on) will be described with reference to FIG. FIG. 7 is a data structure diagram showing a data structure on the optical disc 11 generated by the operation of the recording / reproducing apparatus of the comparative example.

  In the comparative example, the recording / reproducing apparatus 1 itself does not determine whether or not recording of the BD-AV data 271 into the data area 213 of the RE layer 21 is permitted. Therefore, when the recording / reproducing apparatus of the comparative example loads the optical disk 11, the recording / reproducing apparatus of the comparative example can record the BD-AV data 271 in the data area 213 of the RE layer 21.

  Here, a case where the recording / reproducing apparatus of the comparative example loaded with the optical disc 11 is a recording / reproducing apparatus that records the unique menu file 280 or has a function of recording the unique menu file 280 will be considered. In this case, the recording / reproducing apparatus of the comparative example can refer to the unique menu file 280. For this reason, the recording / reproducing apparatus of the comparative example can recognize that the unique menu file 280 specifies a part of the BD-AV data 271 (specifically, a part of the moving picture data 272). Therefore, the recording / reproducing apparatus of the comparative example can record the BD-AV data 271 in consideration of the existence of a part of the BD-AV data 271 specified by the unique menu file 280.

  On the other hand, the case where the recording / reproducing apparatus of the comparative example loaded with the optical disc 11 is a recording / reproducing apparatus that does not record the unique menu file 280 or does not have the function of recording the unique menu file 280 will be considered. In this case, the recording / reproducing apparatus of the comparative example cannot refer to the unique menu file 280. For this reason, the recording / reproducing apparatus of the comparative example cannot recognize that the unique menu file 280 specifies a part of the BD-AV data 271 (specifically, a part of the moving image data 272). Therefore, the recording / reproducing apparatus of the comparative example may record the BD-AV data 271 without considering the existence of a part of the BD-AV data 271 specified by the unique menu file 280. As a result, as shown by a dotted line in FIG. 7, a part of the BD-AV data 271 specified by the unique menu file 280 (for example, title # 1) may be erased or overwritten.

  Thereafter, the optical disc 11 shown in FIG. 7 (that is, the optical disc 11 in which a part of the BD-AV data 271 specified by the unique menu file 280 is erased or overwritten) records the unique menu file 280 again or is unique. Assume that the menu file 280 is loaded on a recording / reproducing apparatus having a function of recording. In this case, the recording / reproducing apparatus tries to reproduce from the unique menu, but cannot reproduce correctly from the unique menu because the title # 1 is erased or overwritten.

  However, in this embodiment, as described above, the recording / reproducing apparatus 1 determines that the recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is permitted. BD-AV data 271 can be recorded in the data area 213. In other words, the recording / reproducing apparatus 1 does not determine that recording of the BD-AV data 271 in the data area 213 of the RE layer 21 is permitted, the BD-AV data is recorded in the data area 213 of the RE layer 21. 271 cannot be recorded. Therefore, as shown in FIG. 7, it is possible to suitably prevent a technical inconvenience that a part of the BD-AV data 271 specified by the unique menu file 280 is unintentionally erased or overwritten.

  In consideration of the technical effects described above, in the present embodiment, the recording / reproducing apparatus 1 that has recorded the unique menu file 280 or has the function of recording the unique menu file 280 is provided in the data area 213 of the RE layer 21. It is preferable that the recording / reproducing apparatus is allowed to record the BD-AV data 271. On the other hand, the recording / reproducing apparatus 1 that does not record the unique menu file 280 or does not have the function of recording the unique menu file 280 is permitted to record the BD-AV data 271 in the data area 213 of the RE layer 21. It is preferable that the recording / reproducing apparatus is not used.

  In addition, in this embodiment, the identifier data 261 is recorded as a file that can be recognized by the file system (that is, the recorder identification file 260). Therefore, the identifier data 261 can be suitably read not only when the recording / reproducing apparatus 1 is configured by a hardware device but also when the recording / reproducing apparatus 1 is configured by software. That is, not only when the recording / reproducing apparatus 1 is composed of one piece of hardware called a recorder, but also when the recording / reproducing apparatus 1 is composed of an optical disk drive and software (software executed on a personal computer), the identifier data 261 is stored. It can read suitably. Therefore, it is possible to prevent unintentional erasure or overwriting of the BD-AV data 271 to the data area 213 of the RE layer 21 regardless of whether the recording / reproducing apparatus 1 is configured by hardware or software. Can do.

  In addition, in this embodiment, each identification record 262 included in the identifier data 261 is divided into a manufacturer identifier 264 and a device identifier 265. For this reason, the recording / reproducing apparatus 1 can quickly determine whether or not recording of the BD-AV data 272 for each manufacturer of the recording / reproducing apparatus 1 is permitted by referring to the manufacturer identifier 264 first. . That is, the recording / reproducing apparatus 1 can identify the recording / reproducing apparatus 1 relatively quickly. In addition, the recording / reproducing apparatus 1 reads the apparatus identifier 265 to quickly determine whether or not recording of the BD-AV data 272 is permitted after focusing on the recording / reproducing apparatus 1 within the same manufacturer. Can be determined. In addition, it is possible to freely assign device identifiers 265 within the same manufacturer without considering duplication of device identifiers 265 with other manufacturers, and to group the recording / reproducing devices 1 within the same manufacturer. Becomes easier.

  In the above description, the optical disk 11 including the ROM layer 20 and the RE layer 21 is described. However, the ROM area (that is, the area that can be reproduced and cannot be recorded and has the same function as the ROM layer 20) and the RE area (that is, the reproduction and recording can be performed on one recording layer). The above-described configuration may be applied even in a case where a possible area and an area having the same function as the RE layer 21 are arranged. Even if comprised in this way, the various effects mentioned above can be enjoyed suitably.

  The present invention is not limited to the above-described embodiments, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification. An apparatus and method, a recording / reproducing apparatus and method, and a computer program are also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Recording / reproducing apparatus 11 Optical disk 20 ROM layer 203 Data area 21 RE layer 213 Data area 260 Recorder identifier file 261 Identifier data 270 User data file 271 BD-AV data 272 Movie data 273 Common menu file 280 Original menu file 281 Partial reproduction data 300 Disk drive 320 Identifier 351 Spindle motor 352 Pickup 353 Recording / reproducing means 354, 359 CPU
355, 360 Memory 400 Host computer

Claims (11)

A playback-only area,
It has a recordable area where data can be recorded, and
The recording medium, wherein identification information for identifying a recording device that is permitted to record specific data in the recordable area is recorded in the reproduction-only area.   The recording medium according to claim 1, wherein the specific data recorded in the recordable area is AV content.   The recording medium according to claim 1, wherein the identification information is recorded as a file that can be recognized by a file system used by the recording apparatus.   The recording medium according to claim 1, wherein the identification information includes manufacturer identification information for identifying a manufacturer of the recording apparatus, and apparatus identification information for identifying the recording apparatus for each manufacturer. . A recording apparatus that performs a recording operation on the recording medium according to claim 1,
Reading means for reading the identification information recorded in the reproduction-only area;
Whether or not the recording device is permitted to record the specific data in the recordable area based on both the identification information read by the reading unit and the identification information of the recording device. Determination means for determining whether or not
A recording unit configured to record the specific data in the recordable area when it is determined that the recording apparatus is a recording apparatus that is permitted to record the specific data in the recordable area; A recording apparatus.   When it is determined that the recording device is not a recording device that is permitted to record the specific data in the recordable area, the recording unit does not record the specific data in the recordable area. The recording apparatus according to claim 5. A recording method for performing a recording operation on the recording medium according to claim 1,
A reading step of reading the identification information recorded in the reproduction-only area;
Recording in which the recording device is permitted to record the specific data in the recordable area based on both the identification information read in the reading step and the identification information of the recording device that executes the recording method. A determination step of determining whether the device is a device;
A recording step of recording the specific data in the recordable area when it is determined that the recording apparatus is a recording apparatus that is permitted to record the specific data in the recordable area. And a recording method. A recording apparatus according to claim 5;
A recording / reproducing apparatus comprising: a reproducing unit that performs a reproducing operation on the recording medium. The recording method according to claim 7;
And a reproducing step for performing a reproducing operation on the recording medium. A computer program for controlling a computer provided in the recording apparatus according to claim 5,
A computer program that causes the computer to function as the reading unit, the determining unit, and the recording unit. A computer program for controlling a computer provided in the recording / reproducing apparatus according to claim 8,
A computer program causing the computer to function as the recording device and the reproducing means.

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