JP2013251030A - Recording and reproducing device and method of controlling recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the execution of data recording processing in a situation where content or the like cannot be normally read.SOLUTION: An optical disk device 1 includes a reproduction permission information determination unit 22 that reads reproduction permission information and determines whether content or the like is in a reproduction permission state, a data recording determination unit 23 that determines whether to permit the execution of data recording processing, and a data recording execution unit 24 that executes data recording processing. When it is determined that content or the like is in a reproduction permission state, the data recording determination unit 23 permits the execution of data recording processing.

Description

  The present invention relates to a recording / reproducing apparatus capable of recording or reproducing information with respect to an information recording medium including a reproduction-only area and a recordable area.

  In recent years, BD (Blu-ray Disc; registered trademark) is commercially available as a large-capacity information recording medium. Examples of the BD include a BD-ROM (Read Only Memory) disk constituted by a read-only layer, and a BD-RE (RE-writable) disk and a BD-R (Recordable) disk constituted by a recordable layer. It is done.

  In the case of a BD-ROM disc, for example, content data or the like is recorded on the read-only layer and is commercially available. An example of such a BD-ROM disc is, for example, Patent Document 1.

  In the BD-ROM disc of Patent Document 1, copy prevention information for decrypting main data (content) encrypted and recorded in the data area is repeatedly recorded or encoded with wobble pits and recorded. Has been. As a result, the reliability of data reproduction can be improved, and content can be prevented from being illegally copied and reproduced on other information recording media.

  Further, in the BD-RE disc and the BD-R disc, a replacement process for a defective portion on the disc is generally performed. As an example of the information recording medium used in the replacement process, for example, Patent Document 2 is cited. Further, in the BD-RE disc and the BD-R disc, generally, trial writing is performed by changing the power (recording power) of the recording light, and an optimum recording power is obtained based on the reproduction characteristics of the trial writing. A determination is made (OPC (Optimum Power Control) processing). Patent Document 3 is an example of an information recording apparatus that performs such processing.

JP 2008-27576 A (published February 7, 2008) Japanese Patent Laying-Open No. 2011-14211 (released on January 20, 2011) JP 2011-187121 A (published September 22, 2011)

  However, the information recording medium disclosed in Patent Literature 1 is a BD-ROM disc, and the information recording media disclosed in Patent Literature 2 are a BD-RE disc and a DVD-R (Recordable) disc, respectively. In Patent Document 1, since it is a BD-ROM disc, that is, a disc dedicated to information reproduction, the copy prevention information is read out by the recording / reproducing apparatus, and the content reproduction possibility judgment is performed. On the other hand, in Patent Documents 2 and 3, since a BD-RE disc, that is, a disc capable of recording information, a recording / reproducing apparatus performs a format process of recording management information of the disc, so that even if there is a defective portion. Data can be recorded in the spare area. Also, since Patent Document 3 is a disc capable of recording information, such as a DVD-R disc, as in Patent Document 2, data recording is performed after the OPC processing is performed by the recording / reproducing apparatus.

  That is, each of the techniques disclosed in Patent Documents 1 to 3 is processing that occurs because of a disk dedicated to information reproduction or a disk capable of recording information. For this reason, Patent Documents 1 to 3 disclose that the recording / reproducing apparatus can reproduce the content recorded in the ROM layer and record the data in the RE layer with respect to a hybrid disc having both the ROM layer and the RE layer. Of course, it is not disclosed how to perform the two processes. That is, the technology of performing the process of reproducing the content of the ROM layer and recording the data in the RE layer at an appropriate timing is a technical idea that occurs only because of a hybrid disk, and the technology has been conceived from the conventional technology as described above. It was difficult to do.

  The present invention has been made to solve the above-described problem, and its object is to reliably prevent data recording processing in a recordable area in a situation where contents or software in the reproduction-only area cannot be read normally. It is an object of the present invention to provide a recording / reproducing apparatus and a control method for the recording / reproducing apparatus.

In order to solve the above problems, a recording / reproducing apparatus according to the present invention provides:
A recording / reproducing apparatus capable of recording or reproducing information with respect to an information recording medium including a reproduction-only area and a recordable area,
Playback that reads the playback permission information that indicates whether playback or permission of the content or software recorded in the playback-only area exists in the playback-only area, and determines whether the content or software is in a playback-enabled state Permission information determination means;
Data recording determination means for determining whether to permit execution of data recording processing in the user data recording area of the recordable area based on a determination result by the reproduction permission information determination means;
Data recording execution means for executing data recording processing to the user data recording area of the recordable area based on the determination result by the data recording determination means,
The data recording determination means permits the execution of the data recording process by the data recording execution means when the reproduction permission information determination means determines that the content or software is in a reproduction permission state. It is said.

In addition, the control method of the recording / reproducing apparatus according to the present invention provides
A control method of a recording / reproducing apparatus capable of recording or reproducing information with respect to an information recording medium including a reproduction-only area and a recordable area,
Playback that reads the playback permission information that indicates whether playback or permission of the content or software recorded in the playback-only area exists in the playback-only area, and determines whether the content or software is in a playback-enabled state Permission information determination step;
A data recording determination step for determining whether or not data recording processing is permitted to be performed on the user data recording area of the recordable area based on the determination result in the reproduction permission information determination step;
A data recording execution step for executing a data recording process in the user data recording area of the recordable area based on the determination result in the data recording determination step,
In the data recording determination step, when it is determined in the reproduction permission information determination step that the content or software is in a reproduction permission state, execution of the data recording process in the data recording execution step is permitted. Yes.

  According to the above-described configuration and method, the reproduction permission information determination unit (reproduction permission information determination step) permits reproduction of content or software recorded in the reproduction-only area of the information recording medium to be recorded and / or reproduced. The reproduction permission information indicating non-permission is read, and it is determined whether or not the content or software is in a reproduction permission state. The data recording determination means (data recording determination step) performs data recording processing by the data recording execution means (data recording execution step) when the reproduction permission information determination means determines that the content or software is in a reproduction permission state. Allow execution. The data recording execution means executes the data recording process to the user data recording area of the recordable area by giving this permission.

  In other words, when reproduction permission information indicating reproduction permission of content or software is read by the reproduction permission information determination means, it is determined that the content or software is in a reproduction permission state, and the user data recording area is read. The data recording process can be executed. On the other hand, if the playback permission information indicating that the playback permission of the content or software is not read by the playback permission information determining means, or if the playback permission information cannot be read, the content or software is not played back. It is determined to be in the permitted state, and the data recording process to the user data recording area is not executed.

  Therefore, it is possible to reliably prevent the data recording process from being performed on the user data recording area of an unauthorized information recording medium that is not permitted to reproduce the content or software recorded in the reproduction-only area. Further, it is possible to reliably prevent the data recording process from being performed on the user data recording area of the information recording medium in which the reproduction is not possible so that the reproduction permission information cannot be read.

  Therefore, according to the recording / reproducing apparatus and the control method thereof of the present invention, it is possible to reliably prevent execution of data recording processing in the user data recording area in a situation where the content or software in the reproduction-only area cannot be read normally. Can do.

Furthermore, in the recording / reproducing apparatus according to the present invention,
Data recording instruction means for instructing execution of the data recording processing by the data recording execution means,
Preferably, the data recording determination means permits the execution of the data recording process by the data recording execution means when receiving the execution instruction of the data recording process from the data recording instruction means.

  According to the above configuration, when the data recording determination unit determines that the content or software is in the reproduction permission state by the reproduction permission information determination unit and receives an execution instruction of the data recording process from the data recording instruction unit, The execution of the data recording process by the data recording execution means is permitted.

  In this case, even if there is an instruction to execute the data recording process, the data recording process is not executed until the determination result of the reproduction permission information determining unit is received. Therefore, even when an instruction to execute data recording processing on an illegal or poorly reproduced information recording medium is received, execution of the data recording processing on the information recording medium can be reliably prevented.

Furthermore, in the recording / reproducing apparatus according to the present invention,
It has an operation unit that can acquire user operations,
Preferably, the data recording instruction means transmits the execution instruction to the data recording determination means when receiving a data recording execution command via the operation unit.

  According to the above configuration, the execution instruction of the data recording process can be transmitted to the data recording determination means at the timing of receiving the data recording execution command from the user.

Furthermore, in the recording / reproducing apparatus according to the present invention,
The data recording determination means indicates that the data recording processing by the data recording execution means is not executable when the reproduction permission information determination means determines that the content or software is in a reproduction non-permission state. It is preferable to output the message shown.

  According to the above configuration, the user can be notified and recognized that the data recording process is not executed.

  As described above, the recording / playback apparatus according to the present invention reads the playback permission information indicating the permission or non-permission of playback of content or software recorded in the playback-only area, which exists in the playback-only area, and Based on the result of determination by the reproduction permission information determination means for determining whether or not the software is in a reproduction permission state, and the determination result by the reproduction permission information determination means, whether or not to execute the data recording process in the user data recording area of the recordable area And a data recording execution means for executing a data recording process in the user data recording area of the recordable area based on a determination result by the data recording determination means. The judging means determines whether or not the content or software has been given permission for reproduction by the reproduction permission information judging means. If it is determined that the, is configured to permit the execution of the data recording process by the data recording executing means.

  In addition, as described above, the control method of the recording / playback apparatus according to the present invention includes the playback permission information indicating whether playback or permission of content or software recorded in the playback-only area exists in the playback-only area. Based on the read permission information determination step of reading and determining whether the content or software is in a playback permission state, and the determination result in the playback permission information determination step, data to the user data recording area of the recordable area A data recording determination step for determining whether or not to execute the recording process; and a data recording execution step for executing a data recording process in the user data recording area of the recordable area based on the determination result in the data recording determination step. In the data recording determination step, the reproduction permission information determination step includes If the content or the software is determined to be the reproduction enabled state Te is a method that permits execution of the data recording process in the data recording execution step.

  Therefore, according to the recording / reproducing apparatus and the control method thereof of the present invention, it is possible to reliably execute the data recording process to the user data recording area of the recordable area in the situation where the contents or software of the reproduction-only area cannot be read normally. Can be prevented.

It is a functional block diagram which shows an example of a structure of the control part with which the optical disk apparatus which concerns on one Embodiment of this invention is provided. 1 is a diagram illustrating an example of an overall schematic configuration of an optical disc apparatus according to an embodiment of the present invention. It is a figure which shows an example of schematic structure of the optical disk which can perform a reproduction | regeneration or recording process with the optical disk apparatus which concerns on one Embodiment of this invention. (A) And (b) is a flowchart which shows an example of the process in the optical disk apparatus based on one Embodiment of this invention. 5 is a flowchart illustrating an example of a reproduction permission determination process in the flowchart illustrated in FIG. 4. It is a flowchart which shows an example of the data recording determination process of the flowchart shown in FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. For convenience of explanation, members having the same functions as those shown in the drawings are denoted by the same reference numerals, and description thereof is omitted.

[Schematic configuration of optical disc apparatus 1]
First, an overall schematic configuration of an optical disc apparatus 1 (recording / reproducing apparatus) according to an embodiment of the present invention will be described with reference to FIG. FIG. 2 is a block diagram showing an overall schematic configuration of the optical disc apparatus 1.

  As shown in the figure, the optical disc apparatus 1 is capable of recording or reproducing information with respect to an optical disc 100 (information recording medium) such as a DVD or a BD, and mainly includes a storage unit 3, a display unit 4, A disk loading recognition unit 6, an operation unit 7, a recording / reproducing circuit group 10, an optical pickup 12, and a control unit 20 are provided. The recording / reproducing circuit group 10 mainly includes a pickup driving circuit 13, a laser driving circuit 14, and a reproducing circuit 15.

  In the optical disc apparatus 1, the control unit 20 moves the optical pickup 12 via a pickup driving circuit 13 to a track (not shown) of the rotating optical disc 100.

  The optical pickup 12 is provided with an optical head 11. Then, the control unit 20 sets recording conditions via the laser drive circuit 14 and irradiates a recording part of the optical disc 100 with a recording laser beam from the optical head 11, whereby information is recorded on the track of the optical disc 100. It is like that.

  In the optical disc apparatus 1, the control unit 20 moves the optical pickup 12 to the recording part of the optical disc 100 via the pickup drive circuit 13. Then, the control unit 20 sets a reproduction condition via the laser drive circuit 14 and irradiates the optical disk 100 with a reproduction laser beam from the optical head 11.

  The reflected light detected by the optical head 11 is converted into a reproduction signal by the reproduction circuit 15 and input to the control unit 20. As a result, the optical disc apparatus 1 reproduces information recorded on a track (consisting of a plurality of sectors) of the optical disc 100.

  The disk loading recognition unit 6 is for detecting loading of the optical disk 100. For example, various sensors can be exemplified, but any sensor can be used as long as loading of the optical disk 100 can be detected. Also good. Further, the disc loading recognition unit 6 outputs the detected result to the control unit 20 as a detection signal.

  Further, the display unit 4 is controlled by the control unit 20 to display an image including a message indicating that data (information) recording processing cannot be executed in, for example, a user data recording area 102c (described later) of the optical disc 100. Information necessary for control of the optical disc apparatus 1 is displayed, such as display. Although the display part 4 is comprised by the liquid crystal panel, for example, not only this but an organic EL (Electro Luminescence) panel etc. may be used.

  Note that a speaker (not shown) that outputs sound or the like may be provided together with or in place of the display unit 4, and sound including the message may be output through the speaker. Good. That is, the display unit 4 and the speaker function as at least a presentation unit that outputs the message.

  The operation unit 7 is used by the user to input various operation commands for the optical disc apparatus 1. That is, the operation unit 7 can acquire a user operation, and examples thereof include an operation button and its interface. The operation unit 7 acquires user operations such as a content or software playback command, a data recording command to the user data recording area 102c of the optical disc 100, and a format execution command.

  Note that the presentation unit such as the display unit 4 and the operation unit 7 are not necessarily provided in the optical disc device 1, and may be realized as an external device and connected to the optical disc device 1. Specific configurations of the storage unit 3 and the control unit 20 will be described later.

[Configuration of Optical Disc 100]
Next, a schematic configuration of the optical disc 100 will be described with reference to FIG. FIG. 3 is a diagram showing an example of a schematic configuration of an optical disc 100 that can perform reproduction or recording processing by the optical disc apparatus 1.

  In the following description, a rewritable (recordable) recording layer (information recording layer) is called an RE (RE-writable) layer, and a read-only recording layer is a ROM (Read Only Memory). ) Layer and a recordable recording layer is called an R (Recordable) layer.

  As illustrated, the optical disc 100 is a hybrid disc including a ROM layer 101 and an RE layer 102 in order from the light incident side emitted from the optical head 11 provided in the optical disc apparatus 1. FIG. 3 illustrates a case where the optical disc 100 includes the ROM layer 101 and the RE layer 102 one by one. However, the present invention is not limited to this, and the ROM layer 101 and / or the RE layer 102 may include a plurality of layers. In addition to the layer or instead of the RE layer 102, the R layer may be provided. Further, the optical disc 100 may be composed of one layer, and may include a read-only area and a recordable area having the functions of the ROM layer 101 and the RE layer 102, respectively. That is, the optical disc 100 may be configured to include a reproduction-only area and a recordable area.

  The ROM layer 101 mainly includes a disc information area 101a, a management area 101b, and a content recording area 101c from the inner periphery side of the optical disc 100. Further, the RE layer 102 mainly includes a disc information area 102a, a management area 102b, and a user data recording area 102c from the inner periphery side of the optical disc 100.

  Further, the direction of the tracks formed on the optical disc 100 is the direction from the inner circumference side to the outer circumference side in all regions. Note that the direction of the track is not limited to this, and may be a direction from the outer peripheral side to the inner peripheral side, or may be a different direction for each region.

  The disc information areas 101a and 102a and the management areas 101b and 102b are areas formed in the lead-in area. Although not shown, a lead-out area exists on the outer peripheral side of the content recording area 101c and the user data recording area 102c. The disc information areas 101a and 102a and the management areas 101b and 102b may be provided in the lead-out area.

  The disc information areas 101a and 102a are areas where information cannot be rewritten, and identification information for identifying the physical structure of the optical disc 100 is recorded. Specific examples of identification information include the type of recording layer (read-only type, write-once type, rewritable type) included in the optical disc 100, the size of the optical disc 100, the version of the optical disc 100 (related to speed, etc.), the polarity of the servo, and the recording mark. And the number unique to the optical disc 100. Note that the recording order (or arrangement method) of these identification information may be arbitrary, and is usually determined by a standard or the like.

  In addition to the above identification information, the disk information area 101a contains ROM layer identification information for identifying the physical structure of the ROM layer 101, and the disk information area 102a contains the physical structure of the RE layer 102. The identification information for RE layer for identifying each is recorded. Specific examples of the ROM layer identification information include the playback conditions (for example, the power of the playback light) of the content or software recorded in the content recording area 101c and the length of the content or software (for example, the start of the content or software) And an address indicating the position and end position). Specific examples of the identification information for the RE layer include recording conditions (for example, recording light power) when information is recorded in the user data recording area 102c.

  Further, in addition to the identification information and the ROM layer identification information, the disc information area 101a records reproduction permission information indicating whether or not the content or software recorded in the content recording area 101c is to be reproduced. This reproduction permission information may indicate permission / inhibition (access restriction) of the content or software for each driving device corresponding to the optical disc 100. Further, the reproduction permission information may include not only whether or not all the content or software can be reproduced, but also information such as which part of the content or software can be reproduced.

  In the disc information areas 101a and 102a, information necessary for reproduction or recording on the optical disc 100 is recorded as described above. For this reason, these areas are areas where the optical head 11 is accessed so that the reproduction light is irradiated when the optical disk 100 is loaded in the drive device (for example, the optical disk apparatus 1). This is also an area where the reproduction light is irradiated before the processing when performing.

  Similar to the disc information area 101a, the management area 101b is an area in which information cannot be rewritten, and ROM layer management information relating to management of the ROM layer 101 (mainly content or software recorded in the content recording area 101c) is stored in the management area 101b. It is recorded. Specific examples of the ROM layer management information include disc-specific information related to the manufacture of the optical disc 100, and areas included in the ROM layer 101 (the entire areas such as the disc information area 101a, the management area 101b, and the content recording area 101c, or , Part) information indicating whether or not the optical head 11 is accessible.

  Further, the reproduction permission information indicating whether the content or software recorded in the content recording area 101c is permitted or not permitted to be reproduced may be recorded in the management area 101b. Similar to the above, this reproduction permission information may indicate permission / inhibition (access restriction) of the content or software for each driving device corresponding to the optical disc 100. Further, the reproduction permission information may include not only whether or not all the content or software can be reproduced, but also information such as which part of the content or software can be reproduced.

  On the other hand, the management area 102b is an area where information can be rewritten, and is an area where management information for managing the RE layer 102 (mainly the user data recording area 102c) can be recorded. As a specific example of the management information, a list for managing a replacement location for a defective location on the optical disc 100, and information such as the arrangement information of the list and the capacity of the replacement processing data recording area (necessary for the format processing to the RE layer 102). Information).

  The content recording area 101c is an area in which information cannot be rewritten, and is an area in which various information such as software (applications) such as an OS (Operating System) and contents are recorded. For example, in the content recording area 101c, software and content prepared by a disk supplier are recorded in advance.

  On the other hand, the user data recording area 102c is an area where various information can be recorded by the user and the information can be rewritten. The user data recording area 102c is related to the contents recorded by the user, software to the ROM layer 101, and contents. This is an area where various information such as information to be added (for example, content additional information, software upgrade information, etc.) can be recorded.

[Configuration of optical disc apparatus 1]
Next, a schematic configuration of the control unit 20 included in the optical disc apparatus 1 will be described with reference to FIG. FIG. 1 is a diagram illustrating an example of a schematic configuration of the control unit 20.

  The control unit 20 mainly includes a data recording instruction unit 21 (data recording instruction unit), a reproduction permission information determination unit 22 (reproduction permission information determination unit), a data recording determination unit 23 (data recording determination unit), and a data recording execution unit 24. (Data recording execution means). The control unit 20 controls members constituting the optical disc apparatus 1 by executing a control program, for example. The control unit 20 reads the program stored in the storage unit 3 into a temporary storage unit (not shown) configured by, for example, a RAM (Random Access Memory) and executes the program, thereby determining whether or not the content or software can be reproduced. Various processes such as determination of whether or not to execute the data recording process, execution of the data recording process, and display control on the display unit 4 are performed.

  The data recording instruction unit 21 instructs the data recording execution unit 24 to execute the data recording process, and transmits an execution instruction for instructing the data recording determination unit 23 to execute the data recording process.

  For example, when the data recording instruction unit 21 receives a data recording execution command via the operation unit 7, the data recording instruction unit 21 transmits the execution instruction to the data recording determination unit 23. In this case, an instruction to execute the data recording process can be transmitted to the data recording determination unit 23 at the timing of receiving the data recording execution command from the user.

  The data recording execution command is, for example, operated by the user when the data recording instruction unit 21 displays an inquiry “Do you want to record content?” On the display unit 4 triggered by the loading of the optical disc 100. This indicates an answer “record content” (answer “YES”) input via the unit 7. Alternatively, when one of the operation units 7 is realized by a record button of a remote control capable of remotely controlling the optical disc apparatus 1, for example, not by answering the inquiry but by pressing the record button It may be. That is, the execution instruction may be transmitted to the data recording determination unit 23 with the pressing of the recording button as a trigger.

  In addition, the data recording instruction unit 21 may transmit the execution instruction when receiving an instruction from a host (not shown) (for example, a PC including the optical disc apparatus 1).

  The reproduction permission information determination unit 22 reads out reproduction permission information indicating whether or not the content or software recorded in the content recording area 101c exists in the disc information area 101a, and puts the content or software into a reproduction permitted state. It is determined whether or not there is. Specifically, the reproduction permission information determination unit 22 reads the reproduction permission information, and when it is confirmed that the reproduction permission information indicates the reproduction permission of the content or software, the content or software is in a reproduction permission state. It is determined that On the other hand, when the reproduction permission information indicating that the reproduction of the content or software is not permitted is read, and when the reproduction permission information cannot be read, it is determined that the content or software is in the reproduction prohibited state.

  The reproduction permission information determination unit 22 transmits the determination result as determination information A to the data recording determination unit 23.

  The data recording determination unit 23 determines whether or not to execute the data recording process on the RE layer 102 based on the determination result by the reproduction permission information determination unit 22. When the reproduction permission information determination unit 22 determines that the content or software in the content recording area 101c is in a reproduction permission state, the data recording determination unit 23 displays determination information A indicating that the reproduction permission state is in effect. Received from the reproduction permission information determination unit 22. When the data recording determination unit 23 receives the determination information A, the data recording determination unit 23 transmits an execution permission signal for allowing the data recording execution unit 24 to execute the data recording process to the data recording execution unit 24.

  In other words, the data recording determination unit 23 does not transmit the execution permission signal when the reproduction permission information determination unit 22 determines that the content or software in the content recording area 101c is in a reproduction non-permission state. The data recording process by the data recording execution unit 24 is not executed.

  Therefore, when the reproduction permission information indicates that the content or software is not permitted to be reproduced, it is determined that the loaded optical disk 100 is an unauthorized optical disk 100 and is stored in the user data recording area 102c of the optical disk 100. Execution of the data recording process can be surely prevented. If the reproduction permission information cannot be read from the ROM layer 101, it is determined that the loaded optical disk 100 is the optical disk 100 in which the ROM layer 101 is defective in reproduction. It is possible to reliably prevent the data recording process from being executed in the user data recording area 102c.

  Furthermore, in the present embodiment, the data recording determination unit 23 receives the execution instruction from the data recording instruction unit 21 in addition to the reception of the determination information A indicating that the reproduction is permitted. The execution of the data recording process by the recording execution unit 24 is permitted.

  With this configuration, even if there is an instruction to execute the data recording process, the data recording process is not executed until the determination result of the reproduction permission information determination unit 22 is received. Therefore, even when an instruction to execute the data recording process on the user data recording area 102c of the optical disk 100 that is illegal or poorly reproduced is received, the data recording process to the user data recording area 102c of the optical disk 100 is surely executed. Can be prevented.

  In addition, since whether or not to execute the data recording process is determined based on the determination by the reproduction permission information determination unit 22, even if there is an execution instruction from the data recording instruction unit 21, the loading is determined by the determination of the reproduction permission information determination unit 22. If it is determined that the optical disc 100 being used is an illegal or poorly reproduced optical disc 100, the data recording process is not executed.

  Note that only the reception of the reproduction permission information indicating the reproduction permission state may be used as a trigger for permission to execute the data recording process. That is, in this case, the data recording determination unit 23 may determine permission to execute the data recording process without waiting for an execution instruction from the data recording instruction unit 21. It is not necessary to have.

  In addition, when the reproduction permission information determination unit 22 determines that the reproduction is not permitted, the data recording determination unit 23 displays a message indicating that the data recording process by the data recording execution unit 24 cannot be performed. And output via the display unit 4 (and / or speaker). As a result, it is possible to notify the user that the data recording process is not executed and recognize the user. Note that this message may be “playback of the optical disc 100 is impossible” or “data recording process cannot be executed”.

  The data recording execution unit 24 executes data recording processing to the user data recording area 102c of the RE layer 102 based on the determination result by the data recording determination unit 23. In practice, when the data recording execution unit 24 receives the execution permission signal from the data recording determination unit 23, the data recording execution unit 24 controls the laser driving circuit 14 of the recording / reproducing circuit group 10 to move the optical pickup 12 to the management area 102b. Then, by irradiating the recording light from the optical head 11, the data recording process to the user data recording area 102c is executed.

  In addition, the storage unit 3 records (1) a control program for each unit, (2) an OS program, (3) an application program, and (4) various data to be read when these programs are executed. To do. The control unit 20 is configured by a nonvolatile storage device such as a ROM (Read Only Memory) flash memory. The temporary storage unit described above is configured by a volatile storage device such as a RAM. However, in the present embodiment, the storage unit 3 may be described as having a function of a temporary storage unit. .

[Flow of processing in optical disc apparatus 1]
Next, the flow of processing in the optical disc apparatus will be described with reference to FIGS. FIG. 4 is a flowchart showing an example of the processing. FIG. 5 is a flowchart illustrating an example of the “reproduction permission determination” process illustrated in FIG. 4, and FIG. 6 is a flowchart illustrating an example of the “data recording determination” process illustrated in FIG.

  As a premise of the processing in FIG. 4, it is assumed that the optical disc 100 is loaded in the optical disc apparatus 1 and the disc loading recognition unit 6 detects the loaded optical disc 100. In the following description, it is assumed that content is recorded in the content recording area 101c of the optical disc 100.

<Overall processing>
In FIG. 4A, the reproduction permission information determination unit 22 receives a detection signal indicating that the optical disk 100 is loaded by the disk loading recognition unit 6 or receives a user instruction via the operation unit 7. Then, it is determined whether or not the content recorded in the ROM layer 101 of the optical disc 100 is permitted to be played (S1: playback permission determination), and the determination result is transmitted to the data recording determination unit 23 as determination information A. The “reproduction permission determination” process will be described later with reference to FIG.

  Next, the data recording instruction unit 21 transmits an execution instruction for instructing execution of the data recording process to the data recording determination unit 23 (S2). In this case, for example, when the data recording determination unit 23 receives the determination information A, the data recording instruction unit 21 checks whether or not a data recording execution command is received via the operation unit 7. When the data recording execution command is received, the execution instruction is transmitted to the data recording determination unit 23.

  Upon receiving the determination information A and the execution instruction, the data recording determination unit 23 performs a process for determining whether or not to execute the data recording process (S3: data recording determination), and determines whether or not the execution is permitted (S4). The “data recording determination” process will be described later with reference to FIG.

  If the data recording determination unit 23 determines that the execution of the data recording process is permitted as a result of the determination (YES in S4), the data recording determination unit 23 transmits an execution permission signal to the data recording execution unit 24. When receiving the execution permission signal, the data recording execution unit 24 executes a data recording process to the user data recording area 102c (S5).

  On the other hand, if the data recording determination unit 23 determines that execution of the data recording process is not permitted as a result of the determination (NO in S4), an image including a message indicating that the data recording process cannot be executed is displayed. Is displayed on the display unit 4 (S6).

  Moreover, it may replace with the process of Fig.4 (a) and the process of FIG.4 (b) may be performed. The process in FIG. 4B is different from the process in FIG. 4A only in that the processing order of S1 and S2 in FIG. 4A is reversed.

  That is, in FIG. 4B, in S11, the data recording instruction unit 21 receives, for example, a detection signal indicating that the optical disc 100 has been loaded by the disc loading recognition unit 6, and via the operation unit 7 When the data recording execution command is received, the execution signal is transmitted to the data recording determination unit 23. Then, in response to the data recording determination unit 23 receiving the execution instruction from the data recording instruction unit 21, a “reproduction permission determination” process by the reproduction permission information determination unit 22 is performed in S12.

  Subsequent processes in S13 to S16 are the same as S3 to S6 in FIG.

  In addition, the process of S1 and S2 (S11 and S12) may be performed simultaneously. Further, when it is determined whether or not the data recording process is permitted only by the reproduction permission information, the processes of S2 and S11 are not necessarily performed. The same applies to the processing of S31 in FIG.

<Playback permission judgment>
Next, an example of the “reproduction permission determination” process shown in S1 and S12 of FIG. 4 will be described.

  As shown in FIG. 5, the reproduction permission information determination unit 22 accesses the ROM layer 101 (S21). That is, the reproduction permission information determination unit 22 controls the pickup drive circuit 13 of the recording / reproduction circuit group 10 to move the optical pickup 12 to the disk information area 101a and reproduce the disk information area 101a. Then, by receiving the reproduction result via the reproduction circuit 15, it is confirmed whether or not reproduction permission information is recorded in the disc information area 101a (S22).

  The reproduction permission information determination unit 22 reads out the reproduction permission information, and sets the determination information A to 1 (S23) when the reproduction permission information indicating the reproduction permission of the content can be detected (YES in S22). On the other hand, when the reproduction permission information indicating that the content is permitted to be reproduced or the reproduction permission information itself cannot be detected (NO in S22), the determination information A is set to 0 (S24). Then, the determination information A is transmitted to the data recording determination unit 23 (S25), and the “reproduction permission determination” process ends.

<Data recording judgment>
Next, an example of the “data recording determination” process shown in S3 and S13 of FIG. 4 will be described. Note that the processing of S31 and S32 may be in reverse order or parallel processing.

  As shown in FIG. 6, the data recording determination unit 23 checks whether or not the execution instruction has been received from the data recording instruction unit 21 (S31). If the execution instruction has been received (S31) YES), it is determined whether the determination information A is set to 1 (S32). If the determination information A is set to 1 (YES in S32), a determination of “permission to execute data recording process” is made (S33). In this case, transmission of an execution permission signal to the data recording execution unit 24 is determined in S4 and S14 of FIG.

  On the other hand, if the execution instruction has not been received (NO in S31), or even if the execution signal has been received (that is, YES in S31), 1 is not set in the determination information A ( If (determination information A = 0) (NO in S32), a determination of “not allowed to execute data recording process” is made (S34). In this case, display of the image including the message on the display unit 4 is determined in S4 and S14 of FIG.

[Summary]
As described above, the data recording determination unit 23 performs data recording processing by the data recording execution unit 24 when the reproduction permission information determination unit 22 determines that the content or software in the ROM layer 101 is in a reproduction permission state. Since the execution is permitted, as described above, it is possible to reliably prevent the data recording process from being executed in the user data recording area 102c in a situation where the contents or software of the ROM layer 101 cannot be read normally.

  In general, the laser power for recording information on the optical disc 100 is higher than the laser power for reproducing information. In the optical disc apparatus 1, as described above, when the contents or software of the ROM layer 101 cannot be read normally, the data recording process is not executed, and thus it is possible to prevent such high laser power from being emitted.

  Furthermore, according to the optical disc apparatus 1 and its control method, the following problems can be solved.

  That is, when the reproduction permission information indicating permission for reproduction of content or software cannot be detected from the optical disc 100, the content recording area 101c of the ROM layer 101 cannot be accessed. Therefore, the determination should be made early so as not to increase the waiting time of the user.

  On the other hand, for example, when a user operation is accepted or when upgrade information is received from the server via the network, data recording processing in the user data recording area 102c is executed. Actually, the format process and the OPC process to the RE layer 102 are performed as the pre-processing, and thus a user's waiting time occurs for the execution of these processes.

  In a hybrid disc such as the optical disc 100 having both the ROM layer 101 and the RE layer 102, the two processing orders of whether or not the content recorded in the ROM layer 101 can be reproduced and the data recording in the RE layer 102 are not determined. It was. For this reason, for example, when the data recording process to the user data recording area 102c is performed first, the format process and the OPC process to the RE layer 102 are performed as the pre-process. Will wait for the processing time.

  If there is no reproduction permission information indicating the above-mentioned reproduction permission, the content or software recorded on the optical disc 100 cannot be reproduced in the optical disc apparatus 1 in the first place. In general, information recording on the RE layer 102 is recording of information related to the content or software recorded on the ROM layer 101, so that the reproduction permission information indicating the reproduction permission cannot be detected on the RE layer 102 of the optical disc 100. Recording of information should not be allowed. In consideration of this point, in the case of the optical disc 100 in which content or software cannot be reproduced, the RE layer, which is a preprocess of the data recording process in the user data recording area 102c, rather than the confirmation of the existence of the reproduction permission information indicating the permission for reproduction. When the formatting process and the OPC process to 102 are performed first, the formatting process and the OPC process itself are useless processes, and the user waits for the useless time.

  According to the optical disc apparatus 1 and its control method, the execution of the data recording process in the user data recording area 102c is permitted only when the existence of the reproduction permission information indicating the permission for reproduction can be confirmed. In other words, the reproduction preparation of the ROM layer 101, which is a determination of whether or not to reproduce the content or software recorded in the ROM layer 101, is prioritized over the format process and the OPC process performed on the RE layer 102, which is a pre-process of the data recording process. The

  Therefore, after the optical disc 100 is inserted into the optical disc apparatus 1, the reproduction permission information recorded in the ROM layer 101 is read to determine whether the content or software recorded in the ROM layer 101 is in a reproduction permitted state. It is possible to reduce the time required until the time is reached, and it is possible to avoid a situation in which the above-described useless processing is generated and the user is made to wait for useless time. That is, it is possible to provide a processing method that reduces the waiting time of the user.

  Further, the optical disc apparatus 1 confirms that the reproduction permission information indicating the reproduction permission exists in the ROM layer 101, and then determines whether or not to execute the data recording process in the user data recording area 102c. When performing, it is necessary to hold the reproduction permission information.

  In general, after the optical disk is ejected from the optical disk apparatus, the information on the optical disk is not stored on the optical disk apparatus side. Therefore, in the case of an optical disk that is not a hybrid disk, the above-described processing is originally performed. Not only is this not meaningful, but even if the above process is to be performed, since the optical disk is replaced, the reproduction permission information cannot be held, and the process cannot be performed.

  That is, the above-described processing performed by the optical disc apparatus 1 is processing that is possible only because the target of the recording or reproduction control by the optical disc apparatus 1 is the optical disc 100 that is a hybrid disc, and processing that is technically significant. You can say that.

[Another expression of the present invention]
The present invention can also be expressed as follows.

  That is, a recording / reproducing apparatus according to an embodiment of the present invention is a recording / reproducing apparatus that performs recording and / or reproduction on an information recording medium including a reproduction-only area and a recordable area, and is present in the reproduction-only area. Reproduction permission information determining means for determining information permitting reproduction of content in the reproduction-only area, content recording determining means for determining whether or not content recording can be performed in the user recording area of the recordable area, and the user recording Content recording executing means for executing content recording in an area, wherein the content recording determining means receives the determination information of the reproduction permission information determining means, and when the determination information is information indicating permission, the content In this configuration, information for permitting execution of content recording is sent to the recording execution means.

  Furthermore, in the recording / reproducing apparatus, it is preferable that the content recording determination unit performs the determination after receiving the determination information of the reproduction permission information determination unit and the content recording instruction from the content recording instruction unit.

  Furthermore, in the recording / reproducing apparatus, it is preferable that the content recording instruction unit receives a content recording execution command from the operation unit and sends a content recording instruction to the content recording determination unit.

  Furthermore, in the recording / reproducing apparatus, the content recording determination unit cannot record the content after receiving the content recording instruction from the content recording instruction unit when the determination information of the reproduction permission information determining unit is information indicating non-permission. Is preferably displayed on the display unit.

  Furthermore, a recording / reproducing method according to an embodiment of the present invention is a recording / reproducing method of an information recording medium including a reproduction-only area and a recordable area, and the contents of the reproduction-only area existing in the reproduction-only area A playback permission determination step for determining information for permitting playback of content, a content recording determination step for determining whether or not content recording can be performed in the user recording area of the recordable area, and content for executing content recording in the user recording area A recording execution step, wherein the reproduction permission determination step is performed before the content recording determination step and the content recording execution step, and the content recording determination step is performed when the determination of the reproduction permission determination step is permitted, This is a method of permitting execution of content recording.

[Supplement]
Finally, each block of the optical disc apparatus 1, particularly the control unit 20 (data recording instruction unit 21, reproduction permission information determining unit 22, data recording determining unit 23, and data recording determining unit 24) may be configured by hardware logic. Alternatively, it may be realized by software using a CPU as follows.

  That is, the optical disc apparatus 1 includes a CPU (central processing unit) that executes instructions of a control program that realizes each function, a ROM (read only memory) that stores the program, a RAM (random access memory) that expands the program, A storage device (recording medium) such as a memory for storing the program and various data is provided. An object of the present invention is to provide a recording medium in which a program code (execution format program, intermediate code program, source program) of a control program of the optical disc apparatus 1 which is software that realizes the above-described functions is recorded so as to be readable by a computer. This can also be achieved by supplying the optical disc apparatus 1 and reading and executing the program code recorded on the recording medium by the computer (or CPU or MPU).

  Examples of the recording medium include a tape system such as a magnetic tape and a cassette tape, a magnetic disk such as a floppy (registered trademark) disk / hard disk, and a compact disk-ROM / MO / MD / digital video disk / compact disk-R. A disk system including an optical disk, a card system such as an IC card (including a memory card) / optical card, or a semiconductor memory system such as a mask ROM / EPROM / EEPROM (registered trademark) / flash ROM can be used.

  The optical disc apparatus 1 may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. The communication network is not particularly limited. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, virtual private network, telephone line network, mobile communication network, satellite communication. A net or the like is available. Further, the transmission medium constituting the communication network is not particularly limited. For example, even in the case of wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL line, etc., infrared rays such as IrDA and remote control, Bluetooth ( (Registered trademark), 802.11 wireless, HDR, mobile phone network, satellite line, terrestrial digital network, and the like can also be used. The present invention can also be realized in the form of a computer data signal embedded in a carrier wave in which the program code is embodied by electronic transmission.

  That is, the optical disc apparatus 1 may be realized by a computer, and in this case, a control program for realizing the optical disc apparatus 1 by the computer by operating the computer as each of the above-described units also falls within the scope of the present invention. A computer-readable recording medium that records the control program also falls within the scope of the present invention.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope shown in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention.

  Since the present invention can surely prevent the data recording process from being performed on the recordable area in a situation where the content of the read-only area cannot be read normally, for example, it has both a read-only area and a recordable area. It can be suitably used for a hybrid disc or the like in which copy-restricted information such as content is recorded in the reproduction-only area.

1 Optical disk device (recording / reproducing device)
7 Operation section 21 Data recording instruction section (data recording instruction means)
22 Reproduction permission information determination unit (reproduction permission information determination means)
23 Data recording determination unit (data recording determination means)
24 Data recording execution unit (data recording execution means)
100 Optical disc (information recording medium)
101 ROM layer (reproduction-only area)
102 RE layer (recordable area)
102c User data recording area

Claims (5)

A recording / reproducing apparatus capable of recording or reproducing information with respect to an information recording medium including a reproduction-only area and a recordable area,
Playback that reads the playback permission information that indicates whether playback or permission of the content or software recorded in the playback-only area exists in the playback-only area, and determines whether the content or software is in a playback-enabled state Permission information determination means;
Data recording determination means for determining whether to permit execution of data recording processing in the user data recording area of the recordable area based on a determination result by the reproduction permission information determination means;
Data recording execution means for executing data recording processing to the user data recording area of the recordable area based on the determination result by the data recording determination means,
The data recording determination means permits the execution of the data recording process by the data recording execution means when the reproduction permission information determination means determines that the content or software is in a reproduction permission state. A recording / reproducing apparatus. Data recording instruction means for instructing execution of the data recording processing by the data recording execution means,
The data recording determination means further permits the execution of the data recording process by the data recording execution means when receiving an instruction to execute the data recording process from the data recording instruction means. 2. The recording / reproducing apparatus according to 1. It has an operation unit that can acquire user operations,
The recording / reproducing apparatus according to claim 2, wherein the data recording instruction unit transmits the execution instruction to the data recording determination unit when receiving a data recording execution instruction via the operation unit.   The data recording determination means indicates that the data recording processing by the data recording execution means is not executable when the reproduction permission information determination means determines that the content or software is in a reproduction non-permission state. 4. The recording / reproducing apparatus according to claim 1, wherein a message to be output is output. A control method of a recording / reproducing apparatus capable of recording or reproducing information with respect to an information recording medium including a reproduction-only area and a recordable area,
Playback that reads the playback permission information that indicates whether playback or permission of the content or software recorded in the playback-only area exists in the playback-only area, and determines whether the content or software is in a playback-enabled state Permission information determination step;
A data recording determination step for determining whether or not data recording processing is permitted to be performed on the user data recording area of the recordable area based on the determination result in the reproduction permission information determination step;
A data recording execution step for executing a data recording process in the user data recording area of the recordable area based on the determination result in the data recording determination step,
In the data recording determination step, the execution of the data recording process in the data recording execution step is permitted when it is determined in the reproduction permission information determination step that the content or software is in a reproduction permission state. Control method of recording / reproducing apparatus.

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