JP2006323553A - Content information management device, content information management method and content information management program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a content information management device, a content information management method, and a content information management program, in which copy-restricted content information recorded in a storage medium (R-medium) difficult to rewrite such as a DVD-R can be moved again to another storage medium such as an HDD. <P>SOLUTION: This device comprises an input part 2 inputting a movement instruction from a storage medium with respect to content information recorded in the storage medium; a medium detection part 23 detecting the kind of the storage medium recording the content information for which the movement is instructed from the input part 2; a copy restriction determination part discriminating the presence/absence of copy restriction for the content information; and an inhibiting processing part 9 performing, when the copy restriction determination part determines that the content information is copy-restricted, inhibiting processing so that the content information is not written again to the storage medium. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a content information management apparatus, a content information management method, and a content information management program for managing digital content information such as video and audio.

  Conventionally, so-called digital content information (hereinafter simply referred to as “content information”) such as video and audio can be obtained by copying the information, so that the copy of the content information is restricted. Thus, various methods for protecting the copyright have been proposed.

  For example, a method called SCMS (Serial Copy Management System) is known to protect the copyright of content information such as movies and music. According to this method, digital media such as CDs and DVDs are used. Only one generation of copying can be permitted, and copying beyond that can be restricted.

  In addition, a technique called CPRM (Content Protection for Recordable Media) has been put into practical use. According to this technique, content information is encrypted using unique key information (hereinafter referred to as a media key) for each recording medium (hereinafter also referred to as a media) such as a DVD or a CD in which the content information is stored. In order to reproduce this content information, it is necessary to always decrypt using this media key. Therefore, even if the content information recorded on one recording medium in the state encrypted by CPRM is simply copied to another recording medium, the encrypted media key (one recording Since there is no medium key information), it cannot be decrypted and reproduced on other recording media. As a result, it was possible to protect the copyright of the content holder.

  Furthermore, in recent years, digital broadcasting such as BS digital broadcasting, 110-degree CS digital broadcasting, and terrestrial digital broadcasting has been started. Since the content information transmitted from the broadcasting station in these digital broadcasts is also so-called digital information, it is the same as the above example that information with extremely little deterioration can be obtained when copying. In order to restrict such copying of content information, in digital broadcasting, information for restricting copying for each content information (also called CCI: Copy Control Information) is given, and copying by an unauthorized person is performed. Action is restricted.

When such digitally broadcast content information is recorded on a recording medium by a home recording device, the above-mentioned CCI is added to the content information, and the above-mentioned CPRM is used to record the content information on the recording medium. It is encrypted and recorded using a unique media key. Conventionally, it has been desired to move content information recorded on a recording medium with such CCI attached to another recording medium (hereinafter, this movement is also referred to as “move” or “MOVE”). In order to solve such a problem, a technology capable of moving the copy-restricted content information recorded on one recording medium to another recording medium on condition that the content information is deleted from the one recording medium. Has been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2002-238023

  However, when the above-described technology is applied to the content information encrypted with the media key, the content information is copied in advance to a PC or the like, and the content information from the media is transferred to the HDD or the like in the recording apparatus. After the content is copied by legitimate means, the content information copied to the PC or the like is returned to the medium, so that the content information moved to the HDD and the content information returned to the medium can be reproduced simultaneously. There was a problem. That is, the content information moved to the HDD or the like is naturally reproducible because it is the content information moved by the legitimate move, and the content information copied to the PC or the like is content information encrypted by the media key. Therefore, it becomes possible to reproduce by returning to the medium having the media key.

  On the other hand, so-called hard-to-rewrite recording media such as DVD-R (including DVD + R) that can be easily obtained at low cost (hereinafter referred to as R media) are widely accepted by users. The copy restricted content information recorded on the HDD or the like is backed up on the R medium, and later moved back to the HDD or moved to another medium. There is a growing demand for lending to family members, friends, etc. and receiving the return, and then moving the content information back to the original HDD or the like. Therefore, there is a need for a content information management device that can achieve both protection of the rights of the content holder and user convenience.

  The present invention has been made in view of such a problem, and a content information management apparatus capable of moving copy-restricted content information recorded on a so-called R medium to another recording medium such as an HDD, It is an object to provide a content information management method and a content information management program.

  The content information management apparatus according to the present invention includes an input unit that receives an instruction to move from the recording medium and content information that is input from the input unit. A medium type detection unit that detects the type of recording medium, a copy restriction determination unit that determines whether or not content information is restricted, and a medium type detection unit detect that the type of the recording medium is difficult to rewrite. And a suppression processing unit that performs a suppression process on the recording medium so that the content information is not written again to the recording medium when the copy limitation determination unit determines that the content information is copy-restricted. It is characterized by that.

  With this configuration, when an instruction to move content information that is copy-restricted and is stored on a so-called R medium is input, the suppression processing unit moves the content information. Since the deterrence process is performed so that it is not moved again from another recording medium and written to the recording medium, the copy-restricted content information recorded on the so-called R medium is transferred to another recording medium before it is moved to another PC It is possible to provide a content information management apparatus that can copy and prevent an illegal act of viewing after returning to the recording medium of the move and viewing again.

  In addition, the information processing apparatus further includes a reading processing unit that performs reading processing of content information from the recording medium, and the suppression processing unit performs the suppression processing on the recording medium after the reading processing of content information by the reading processing unit is completed. There may be.

  According to such a configuration, since the suppression process is performed after the reading process of the content information by the reading processing unit is completed, the configuration in which the content information can be moved to another recording medium more reliably is realized. it can.

  Further, the reading processing unit further performs a reading process of the content information from the recording medium, and a recording processing unit that performs a process of recording the content information read by the reading processing unit on the destination recording medium. The configuration may be such that after the recording process of the content information by the recording processing unit ends, the suppression process is performed on the recording medium.

  According to such a configuration, since the suppression processing is performed after the storage processing of the content information by the recording processing unit is completed, a configuration that can move the content information to another recording medium more reliably is realized. it can.

  In addition, an abnormality detection unit that detects that a power failure has occurred, and an abnormality processing determination unit that determines a process that was being executed before the power failure occurred when the abnormality detection unit detects a power failure. In addition, when the process determined by the abnormal process determination unit is a process that needs a suppression process, the process that is being executed before the occurrence of the power interruption may be resumed as the power interruption recovery process.

  According to such a configuration, even if a power interruption occurs while a process requiring a suppression process is being performed, the process being executed before the occurrence of a power interruption is resumed as a power interruption recovery process, Even if the power is cut off during a process that requires the suppression process, the suppression process is not stopped.

  In addition, an abnormality detection unit that detects that a power failure has occurred, and an abnormality processing determination unit that determines a process that was being executed before the power failure occurred when the abnormality detection unit detects a power failure. In addition, when the process determined by the abnormal process determination unit is a process that needs to be suppressed, when the content information recorded on the transfer destination recording medium is incomplete as the power-off recovery process, the transfer destination recording The configuration may be such that the content information recorded on the medium is invalidated, and when the content information of the destination recording medium is complete, a suppression process is performed on the recording medium.

  According to such a configuration, when the power supply is further cut off, the content information recorded on the destination recording medium when the content information recorded on the destination recording medium is incomplete as power-off recovery processing. Is disabled, and when the content information of the destination recording medium is complete, the recording medium is subjected to a suppression process, so that incomplete content information can be prevented from being recorded on the destination recording medium. .

  Furthermore, the restriction unit further restricts the removal of the recording medium, and the restriction unit restricts the removal of the recording medium before the reading processing unit performs the content information reading process, and after the inhibition processing unit performs the inhibiting process. The configuration may be such that the restriction on taking out the recording medium is released.

  According to such a configuration, since the removal of the recording medium is restricted while the reading process by the reading processing unit and the suppression process by the suppression processing unit are being performed, for example, the reading process is performed. Thereafter, by removing the recording medium before the suppression process is performed, it is possible to prevent the content information whose copy has been restricted from flowing out to another recording medium.

  The restriction unit may be configured to restrict the removal of the recording medium when the abnormality detection unit detects a power interruption, and to release the restriction on the removal of the recording medium after the power interruption recovery process is completed. .

  According to such a configuration, the recording medium cannot be removed when the power is cut off. Therefore, the recording medium that has not been subjected to the suppression process is taken out by causing the power to be cut off during the suppression process. Can be prevented.

  Further, the suppression processing unit may be configured to record arbitrary information in the free area of the recording medium so that the free capacity of the recording medium is smaller than the capacity of the content information.

  According to such a configuration, after the content information is moved to another recording medium, there is not enough free space for the moved content information to be returned to the original recording medium again. Before moving the content to another recording medium, it is possible to copy the content information to be moved to a PC or the like and return it to the original recording medium again after the move to prevent fraudulent viewing. .

  Further, the suppression processing unit may be configured to perform finalization processing on the recording medium.

  According to such a configuration, after the content information is moved to another recording medium, the recording medium of the move source cannot be additionally recorded. Therefore, before the content information is moved to another recording medium, It is possible to copy the content information to be transferred to another computer or the like and return it to the recording medium after the move again to prevent an illegal act of viewing.

  The suppression processing unit includes an information rewriting unit that rewrites information recorded on the recording medium to predetermined information, and the suppression processing unit records the free space of the recording medium so that the free space of the content information becomes smaller. While recording arbitrary information on the medium, the information rewriting unit may be configured to rewrite content information recorded on the recording medium with predetermined information.

  According to such a configuration, further, after the move process, the free capacity of the recording medium is made smaller than the capacity of the content information to be moved, and the content information in the recording medium is rewritten with predetermined information. It is possible to realize a configuration excellent in copyright protection in which content information cannot be read from the recording medium after the move.

  The suppression processing unit includes an information rewriting unit that rewrites information recorded on the recording medium to predetermined information. The suppression processing unit finalizes the recording medium, and the information rewriting unit records the information on the recording medium. It may be configured to rewrite the content information thus obtained into predetermined information.

  According to such a configuration, after the moving process, the recording medium is finalized, and the content information in the recording medium is rewritten with predetermined information, so that the content information can be read from the recording medium after the move. It is not possible to realize a configuration with excellent copyright protection.

  Further, the content information may include file entry information including address information in which the content information is stored, and the information rewriting unit may be configured not to rewrite the file entry information when rewriting the content information with predetermined information. .

  According to such a configuration, since the file entry information is not rewritten even when the content information is rewritten to predetermined information, the presence of the moved content on the recording medium is detected after the move. The resulting configuration can be realized. Furthermore, since the file structure of the recording medium is maintained by not rewriting the file entry information, the content information that is different from the moved content information is also recorded on the recording medium that has once been subjected to the suppression process. Since the content information can be accessed in the same manner as before the content is moved, it is possible to individually move the content on the same storage medium.

  Further, the information rewriting unit may include a light irradiation unit that irradiates a light beam amplified to a power that can rewrite information recorded on the recording medium to predetermined information.

  According to such a configuration, it is possible to realize a configuration in which predetermined information can be written even in a recorded area in a so-called R medium.

  The suppression processing unit may include a media key deletion unit that deletes the media key of the recording medium.

  According to such a configuration, since the suppression processing unit further includes the media key deletion unit that deletes the media key of the recording medium, the media key of the recording medium is deleted after the move process, so that after the move process, In the recording medium, it becomes impossible to reproduce the content information that is decrypted by using a media key such as CPRM, and it is possible to realize a configuration capable of realizing more advanced copyright protection of the content holder.

  In addition, when the content information shares ECC with other content information when the content information is rewritten with predetermined information, the suppression processing unit newly creates an ECC having other content information. The information rewriting unit may be configured to rewrite the content information with predetermined information after the ECC is newly created by the ECC creating unit.

  According to such a configuration, even when the content information to be moved constitutes ECC with other content information, the content information becomes the move target without affecting the other content information. A configuration in which only content information can be rewritten can be realized.

  Next, in the content information management method of the present invention, a first step in which an instruction to move from the recording medium is input for the content information recorded in the recording medium, and the instruction is input in the first step. In the second step of detecting the type of the recording medium on which the recorded content information is recorded, the third step of determining whether or not there is a copy restriction on the content information, and in the second step, the type of the recording medium is rewritten. If it is detected that the recording medium is difficult, and it is determined in the third step that the content information is copy-restricted, a suppression process is recorded so that the content information is not written again to the recording medium. And a fourth step performed on the medium.

  By such a method, when an instruction to move content information that is copy-restricted and stored in a so-called R medium is input, the content information is transferred from another recording medium to which the content information is moved. Since deterrence processing is performed so that it is moved again and not written to the recording medium, the copy-restricted content information recorded on the so-called R medium is copied to another computer or the like before it is moved to another recording medium. Therefore, it is possible to provide a content information management method capable of preventing an illegal act of viewing after returning to the original recording medium after the move.

  Next, the content information management program of the present invention includes a first step in which an instruction to move content information recorded on a recording medium from the recording medium is input to the computer, and a first step In the second step, the second step of detecting the type of the recording medium on which the content information to which the instruction is input is detected, the third step of determining whether or not the content information is copy-limited, and the second step, If it is detected that the type of the recording medium is difficult to rewrite, and it is determined in the third step that the content information is copy-restricted, the content information is not written to the recording medium again. And a fourth step of performing an appropriate suppression process on the recording medium.

  With this configuration, when an instruction to move content information that is copy-restricted and stored in a so-called R medium is input, the content information is transferred from another recording medium to which the content information is moved. Since deterrence processing is performed so that it is moved again and not written to the recording medium, the copy-restricted content information recorded on the so-called R medium is copied to another computer or the like before it is moved to another recording medium. Therefore, it is possible to provide a content information management program capable of preventing an illegal act of viewing after returning to the original recording medium after the move.

  As described above, according to the present invention, the copy-protected content information recorded on the so-called R medium can be copyrighted and moved to another recording medium such as an HDD again. A content information management device, a content information management method, and a content information management program can be provided.

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

(Embodiment 1)
First, the content information management apparatus 1 in Embodiment 1 of this invention is demonstrated. FIG. 1 is a block diagram showing a schematic configuration of a content information management apparatus 1 according to Embodiment 1 of the present invention.

  As shown in FIG. 1, the content information management device 1 according to the first embodiment of the present invention is a so-called recording / playback device including two drive devices, an HDD device 30 and a DVD device 20.

  The HDD device 30 includes an HDD 31 that records information including content information such as video, audio, and still images, and an HDD drive unit 32 that drives the HDD 31.

  The DVD device 20 includes a DVD (Digital Versatile Disk) 21 on which content information such as video, audio, and still images that can be taken out is recorded, an open / close unit 22 that restricts the take-out of the DVD 21, and information writing to the DVD 21. Or reading information from the DVD 21, a medium detection unit 23 for detecting the type of the medium of the DVD 21 (at least whether the information can be rewritten), an opening / closing unit 22, a head A DVD drive unit 25 for driving the unit 24 and the medium detection unit 23. Although not shown, the DVD device 20 according to the first embodiment of the present invention has a spindle motor that rotates the DVD 21, and the rotation of the spindle motor is also driven by the DVD drive unit 25.

  The content information management apparatus 1 according to the first embodiment of the present invention is based on the input unit 2 that receives various inputs including an instruction to move the content information from the user, and instructions input from the input unit 2. As will be described later, the content information management unit 4, the file management unit 6, the DVD drive unit 25, the read / write unit 11, the output unit 14, etc. A file management unit 6 that performs file management such as reading of recorded content information, and a content management information storage unit that stores management information about content information read by the file management unit 6 (hereinafter referred to as content management information) 5. Whether content information can be moved based on the content management information stored in the content management information storage unit 5 Content information management unit 4 that manages content information including the content, decoding unit 10 that decodes the content information stored in DVD 21 read by file management unit 6 using the media key of DVD 21, and decodes by decoding unit 10 The content information decoded by the decoding unit 10 and the control unit 3, and the read / write unit 11 that performs processing including processing of writing the content information to the HDD 31 and processing of reading content information from the HDD 31. An output unit 14 for outputting the GUI information.

  The file management unit 6 of the content information management device 1 according to Embodiment 1 of the present invention further performs a process of reading information including content information and content management information from the DVD 21 of the DVD device 20 based on an instruction from the control unit 3. A read processing unit 7 that performs the write processing unit 8 that performs a process of writing information including content information on the DVD 21; and a suppression processing unit 9 that performs a suppression process as described later on the DVD 21.

  Further, the read / write unit 11 of the content information management device 1 according to the first embodiment of the present invention decodes and reads information including content information from the HDD 31 of the HDD device 30 based on an instruction from the control unit 3. It has a reading unit 12 and a writing unit 13 that encodes and writes information including content information in the HDD 31.

  Here, the content management information stored in the content management information storage unit 5 of the content information management apparatus 1 according to Embodiment 1 of the present invention will be described. FIG. 2 is a diagram showing an example of content management information stored in the content management information storage unit 5 of the content information management apparatus 1 according to Embodiment 1 of the present invention.

  As shown in FIG. 2, the content management information storage unit 5 of the content information management apparatus 1 according to the first embodiment of the present invention stores the content ID, recording address, capacity, and copy for each piece of content information recorded on the DVD 21. A content information management table 41 having restriction information, and a recording medium management table 42 having information on the type, total capacity, recorded capacity, free capacity, and finalization status of the DVD 21 loaded on the DVD device 20. It has.

  First, as shown in the content information management table 41 of FIG. 2A, the content ID is “A” on the DVD 21 loaded on the DVD device 20 of the content information management device 1 according to the first embodiment of the present invention. ”,“ B ”,“ C ”, and“ D ”are recorded, and the recording addresses thereof are“ 0 (address) to 1000 (address) ”,“ 1001 (address) to 6000 ( Address) ”,“ 6001 (address) to 14000 (address) ”, and“ 14001 (address) to 18000 (address) ”, and their capacities are“ 100 (MB) ”,“ 500 (MB) ”,“ 800 (MB) ”and“ 400 (MB) ”, and the copy restriction information of each content information is“ CopyNever (copy prohibited) ”,“ CopyFree (copy) Reason) ", it can be seen that is" CopyNever "and" CopyNever ".

  Further, as shown in the recording medium management table 42 in FIG. 2B, the DVD 21 loaded on the DVD device 20 of the content information management device 1 according to the first embodiment of the present invention has a medium type “DVD”. -R (medium in which information is difficult to be overwritten) ", its total capacity is" 3950 (MB) ", its recorded capacity is 1800 (MB), and its free capacity is 2150 (MB), It can be seen that the finalizing process of the medium (hereinafter, the process that makes it impossible to write information to the medium) is “not yet”, that is, it has not been finalized.

  The content information management table 41 can be created by obtaining a content information arrangement by reading a navigation file (IFO file) recorded on the DVD 21 by the read processing unit 7 of the file management unit 6. The recording medium management table 42 can be created by the medium detection unit 23 reading information on the physical area of the DVD 21.

  Next, the operation of the content information management apparatus 1 according to Embodiment 1 of the present invention will be described. FIG. 3 is a flowchart for explaining the operation steps of content information management apparatus 1 in the first embodiment of the present invention.

  Here, the DVD device 20 of the content information management device 1 includes the DVD 21 shown in the recording medium management table 42 in FIG. 2B (that is, the medium is an R medium, the total capacity is 3950 MB, and the recorded capacity is 1800 MB. 2 having a free space of 2150 MB and having not been finalized is loaded, and the DVD 21 has four pieces of content information (content IDs shown in the content information management table 41 in FIG. 2A). It is assumed that “A”, “B”, “C” and “D” are recorded).

  In the first embodiment of the present invention, the content information whose content ID is “C” recorded on the DVD 21 loaded on the DVD device 20 of the content information management device 1 (that is, the recording address is from 6001 to 14000). Description will be made using a case where the address (content information having a capacity of 800 MB and copy restriction) is moved to the HDD 31 of the HDD device 30 of the content information management device 1.

  As shown in FIG. 3, first, the user inputs to the input unit 2 of the content information management device 1 that “I want to move the content information of the content ID“ C ”recorded on the DVD 21 to the HDD 31”. (S1). This input is performed by, for example, presenting a GUI (Graphical User Interface) created by the control unit 3 to the user through the output unit 14 and inputting the GUI to the input unit 2 by the user. Can do.

  Next, the control unit 3 instructs the DVD drive unit 25 to restrict the opening / closing of the opening / closing unit 22 of the DVD device 20 based on the user's content information move request from the input unit 2 (S2). As a result, the user cannot take out the DVD 21.

  Next, the control unit 3 inquires of the content information management unit 4 whether or not the content information to be moved can be moved, and the content information management unit 4 stores the content management information stored in the content management information storage unit 5. Based on this, it is determined whether or not the move target content information (content information with content ID “C” in the present embodiment) can be moved (S2). Specifically, the content information management unit 4 refers to the content information management table 41 and the recording medium management table 42 stored in the content management information storage unit 5.

  First, the content information management unit 4 refers to the content information management table 41 and determines whether copy restriction information is added to the content information to be moved (S4). If copy restriction information is added to the content information to be moved (in the case of this embodiment, it is CopyNever content), the process proceeds to step S6. On the other hand, when copy restriction information is not added to the content information to be moved (in this embodiment, when it is CopyFree content), the content information management unit 4 instructs the control unit 3 to move the content. Since the content information is information with no copy restrictions, the control unit 3 informs the user that the copy is possible, and causes the file management unit 6 to read the content information to be moved, and the decoding unit 10 and the read / write. The data is written in the HDD 31 through the insertion unit 11 (S5).

  In step S6, the content information management unit 4 refers to the recording medium management table 42 to determine whether or not the DVD 21 is a so-called R medium (S6). When the content information management unit 4 determines that the DVD 21 is not a so-called R medium, that is, when it is determined that the recorded information can be rewritten (for example, when the medium is a DVD-RAM, In the case of DVD-RW or DVD + RW), the output unit 14 notifies the control unit 3 to that effect, and the control unit 3 displays that the rewritable medium cannot be moved. (S7). Note that the reason why the move is not possible here is that the deterrence process cannot be performed on a rewritable medium, so that it is not possible to prevent an illegal act of returning content information copied to a PC or the like to the medium. is there. However, if the media key of the rewritable medium is forcibly made unreadable as in other modifications described later, this risk can be reduced. However, it may be possible to move.

  On the other hand, when the content information management unit 4 determines in step S6 that the type of the recording medium loaded on the DVD device 20 is the R medium, the control unit 3 is notified of this and the suppression. The control unit 3 notifies the content information management unit 4 and the file management unit 6 that the following processing is performed, notifying that the content information can be moved if the processing is performed. At this time, if the control unit 3 asks the user whether or not the move with the suppression process may be performed through the output unit 14, and the user inputs the input through the input unit 2 in response to the inquiry, the user suppresses it. If you do not like a move that involves processing, you can not perform such a move.

  Subsequently, the control unit 3 causes the content information management unit 4 to detect the free capacity of the DVD 21 as the R medium (S8). The content information management unit 4 refers to the content management information recording medium management table 42 stored in the content management information storage unit 5 and returns the free capacity to the control unit 3. In the present embodiment, a value of 2150 MB is sent from the content information management unit 4 to the control unit 3.

  Next, the control unit 3 instructs the file management unit 6 to move the content information to be moved recorded on the DVD 21 (in this embodiment, content information whose content ID is “C”) to the HDD 31. (S9). Specifically, the control unit 3 instructs the read processing unit 7 of the file management unit 6 to move the content information to be moved, and the read processing unit 7 instructs the DVD drive unit 25 to pass through the head unit 24. The content information to be moved recorded on the DVD 21 is read out. The content information read by the head unit 24 is sent from the file management unit 6 to the decoding unit 10, decoded, then sent to the reading / writing unit 11, and the writing unit of the reading / writing unit 11 13 is encoded for the HDD 31 and written onto the recording medium of the HDD 31 via the HDD driving unit 32. As a result, the content information of the content ID “C”, which is the copy-targeted content information to be copied, recorded on the DVD 21 as the R medium is copied onto the HDD 31.

  In this state, content information whose copy is restricted exists on different media such as the DVD 21 and the HDD 31 and may be contrary to the intention of the content holder. Therefore, in the content information management apparatus 1 according to the first embodiment of the present invention Is that the write processing unit 8 of the file management unit 6 adds VAT (Virtual Allocation Table) address conversion information corresponding to the content information to be moved in the DVD 21 so that the content information to be moved cannot be viewed again. Process.

  Next, the content information management apparatus 1 according to the first embodiment of the present invention performs a suppression process as described below on the DVD 21 (S10).

  In step S9, after confirming that the content information to be moved has been moved from the DVD 21 to the HDD 31, the control unit 3 instructs the file management unit 6 to perform a predetermined suppression process. Here, the inhibition process refers to a process of inhibiting the movement target content information from being moved again from another recording medium after the movement target content information has been moved to another recording medium. .

  This will be specifically described. FIG. 4 is a diagram for explaining the suppression process in the content information management apparatus 1 according to Embodiment 1 of the present invention. In the first embodiment of the present invention, it is assumed that four pieces of content information as shown in FIG. 2A are recorded on the DVD 21 of the content information management apparatus 1 (the description is simplified). Therefore, information other than the content information is not shown). Assume that the content information immediately after the content information of the content ID “C”, which is the content to be moved, is moved to the HDD 31 in the above-described step S9 is in the state shown in FIG. That is, of the content information “A” to “D”, the content information with the content ID “C” cannot be viewed (invisible state). At this time, the capacity of the free space on the right side of FIG. 4A is 2150 MB. In this state, the content ID that was the content information to be moved is shown by FIG. 4B by an unauthorized person. The content information (800 MB) of “C” is backed up to another recording medium such as a PC before the move process, and after the move process of the content information is performed, it is added to the empty area of the DVD 21 from the other recording medium. There is a possibility that. In this way, when the content information that has been illegally added is encrypted by the encryption method using the media key such as the CPRM as described above, the content information to be moved has already been moved to the HDD 31. Even though it should be impossible to view, the DVD 21 is viewed using the media key. In order to prevent such an illegal act, the deterrence processing unit 9 of the file management unit 6 of the content information management apparatus 1 in Embodiment 1 of the present invention, as shown in FIG. With respect to the free area, the capacity in which the move target content information cannot be recorded again, specifically, the free area (area F in FIG. 4C) is smaller than the capacity of the move target content information (800 MB). In other words, arbitrary information (area E in FIG. 4C) is written on the DVD 21 so that the free capacity of 2150 MB is less than 800 MB, with respect to the free area exceeding the difference of 1350 MB.

  Here, the information that the inhibition processing unit 9 should write to the free space of the DVD 21 may be arbitrary information. For example, the information may be fixed information such as 00h or FFh, or a video indicating that the copyright-protected content information has been moved to another medium may be embedded. In the present embodiment, since the DVD 21 is an R medium, it is difficult to rewrite information. Therefore, by keeping even the free capacity smaller than the capacity of the content to be moved, other recordings such as a PC before the move processing are performed. It is possible to prevent an illegal act such as being added to the free space portion of the DVD 21 and viewed from another recording medium after the content information is moved to the medium and processed. Furthermore, by embedding a video indicating that the content information has been moved to another medium, the content information cannot be reproduced even for users who have forgotten that the move has been performed. It can remind you.

  By performing such suppression processing, as shown in FIG. 4D, the capacity of the empty area F of the DVD 21 becomes smaller than the capacity of the moving target content information “C”. It is possible to prevent fraud that is restored.

  After the suppression process by the suppression processing unit 9 of the file management unit 6 in step S10 ends, the control unit 3 instructs the DVD drive unit 25 to release the opening / closing restriction of the opening / closing unit 22 of the DVD 21 and ends the process. (S11). Thereby, the user can take out the DVD 21 from the apparatus.

  As described above, according to the content information management apparatus 1 in Embodiment 1 of the present invention, after the move target content information is moved to another recording medium, the move target content information cannot be added again. Since the free space can be reduced by adding arbitrary information to the free space, the content information to be moved is further changed before the move process from the original recording medium to another recording medium is performed. An illegal act of backing up to a recording medium and adding the content to be moved to another recording medium after the move target content information has been moved to the original recording medium for viewing. It is possible to prevent it in advance.

  In the first embodiment of the present invention, the suppression processing unit 9 of the file management unit 6 has been described as a means for writing arbitrary information so that the free space of the DVD 21 as the R medium is reduced. However, the suppression processing unit 9 of the content information management apparatus of the present invention is not limited to such means.

  For example, the suppression processing unit 9 of the content information management apparatus of the present invention may be a means for performing a finalizing process on the DVD 21 that is an R medium. FIG. 5 is a diagram for explaining still another example of the suppression processing unit 9 of the content information management apparatus 1 according to Embodiment 1 of the present invention. FIG. 5A shows the status of the content information immediately after the content information of the content ID “C”, which is the content to be moved, is moved to the HDD 31 in step S9 described above. That is, of the content information “A” to “D”, the content information with the content ID “C” cannot be viewed (invisible state). The suppression processing unit 9 adds the lead-out information 58 as shown in FIG. 5B to the content information 55 having the lead-in information 56 recorded on the DVD 21 as described above. The information can no longer be written to the DVD 21 as the R medium. As described above, by using means for finalizing the DVD 21 as the R medium as the suppression processing unit 9, the content information to be moved can be moved from the original recording medium to another recording medium before the moving process is performed. In addition, the content information to be moved is backed up to another recording medium, and after the moving process to the other recording medium is performed, the information is additionally recorded from the other recording medium to the original recording medium and viewed. It is possible to prevent unauthorized actions.

(Embodiment 2)
In Embodiment 1 of the present invention, as the suppression processing unit 9 of the content information management device 1, by writing arbitrary information in the free area of the DVD 21 that is the R medium, or by finalizing the medium itself, A configuration has been shown that makes it possible to prevent the content information to be moved from being added later to the free space.

  However, in the configuration of the first embodiment, the moving target content information of the DVD 21 which is the R medium can be made invisible by adding a VAT conversion table after the moving. Actually, even after the move, the actual content information of the content information to be moved exists on the DVD that is the R medium, and remains on the DVD 21 by an unauthorized person who has sufficient knowledge about the file system. It cannot be said that there is no possibility of viewing the content information to be moved after the old VAT conversion table and file entry information have been read and moved.

  Therefore, next, as the content information management apparatus 50 according to the second embodiment of the present invention, an old VAT conversion table or file entry remaining on the DVD 21 by such an unauthorized person having sufficient knowledge about the file system. A configuration that can significantly reduce the possibility of viewing the content information to be moved after the movement even if the information is read will be described.

  FIG. 6 shows the configuration of the content information management device 50 according to Embodiment 2 of the present invention. FIG. 6 is a block diagram showing the configuration of the content information management apparatus 50 according to Embodiment 2 of the present invention.

  The content information management device 50 according to the second embodiment of the present invention differs from the content information management device 1 described in the first embodiment in that the DVD device 51 is driven by the DVD drive unit 52. The optical head is provided with an optical amplifying unit 53 that amplifies the output of the light beam irradiated to the DVD 21 that is a medium, and the processing performed by the suppression processing unit 59 is also the same as the suppression processing unit 9 in the first embodiment. It is a slightly different point.

  About the other structure, since the content information management apparatus 50 in Embodiment 2 of this invention is common with the content information management apparatus 1 in Embodiment 1, the same code | symbol is attached | subjected to the common component, Each explanation is omitted.

  As shown in FIG. 6, the content information management device 50 according to the second embodiment of the present invention has an optical amplification unit 53 that can amplify the output of the light irradiated to the DVD 21. In the DVD 21 which is an R medium, even if a part of which some information has already been recorded is irradiated with a laser beam having an increased output, the part is physically changed so that the information cannot be read. be able to.

  As a drive device having such an optical amplifying unit 53, for example, with respect to copy-restricted content information, recorded data is reproduced by irradiating with a laser power larger than the normal reproduction laser power. There is known an apparatus that can be deteriorated to prevent the use of unlimited data, and this apparatus can be used. As such an apparatus, for example, the apparatus proposed in Japanese Patent Laid-Open No. 8-147856 can be used.

  The operation of the content information management apparatus 50 according to the second embodiment of the present invention will be described with reference to FIG. 3 used for describing the operation of the content information management apparatus 1 according to the first embodiment. The content information management apparatus 50 according to the second embodiment of the present invention also performs the same operation steps as the operation steps of the content information management apparatus 1 according to the first embodiment, but the contents of the move process in step S9 are different.

  Here, the DVD 21 of the content information management device 50 according to Embodiment 2 of the present invention stores four pieces of content information 60 “A” to “D” as shown in FIG. Shall. FIG. 7 is a diagram for explaining processing of the suppression processing unit 59 of the content information management device 50 according to Embodiment 2 of the present invention. Also in the present embodiment, it is assumed that content information whose content ID is “C” among the four content information is the content information to be moved. For the sake of simplicity, only the file entry information (FE) of a stream file having content IDs “A” to “D” as data areas and the VAT conversion table are described. Needless to say, etc. are recorded.

  First, in step S9, after the moving target content information is copied to the HDD 31, the control unit 3 instructs the suppression processing unit 59, and the suppression processing unit 59 instructs the DVD drive unit 52 to obtain the moving target content information. The actual content portion of the content information whose content ID is “C” is irradiated with laser light whose output has been increased by the optical amplifying unit 53, and the actual content information can be read as shown in FIG. 7B. Process to prevent it.

  After the move processing of the content information to be moved in step S9 is completed, in step S10, as described in the content information management device 1 in the first embodiment, the suppression processing unit 59 uses the free capacity of the content information 60 of the DVD 21. However, arbitrary information is written in the free space so as to be smaller than the capacity of the content information to be moved (S10).

  In step S10, the suppression processing unit 59 can write arbitrary information in the empty capacity portion of the content information 60 of the DVD 21, and as described in the first embodiment, FIG. When the content information 61 having the lead-in information 62 as shown in FIG. 8 is processed so that the actual content portion of the move target content information cannot be read as shown in FIG. Along with the lead-out information 64, the content information 63 can be finalized.

  By performing these processes, according to the content information management apparatus 50 in the second embodiment of the present invention, after the content information to be moved is moved from the original recording medium to another recording medium, By irradiating the actual content part of the content information to be moved with the laser beam whose output has been amplified by the optical amplifying unit 53, the part can be made unreadable, so that the illegality has sufficient knowledge about the file system. Even if an old VAT conversion table or file entry information remaining on the DVD 21 is read by a new person, the possibility of viewing the content information to be moved after the move can be significantly reduced.

  In the second embodiment of the present invention, after the movement target content information is moved, the suppression processing unit 59 irradiates only the actual content portion of the movement target content information on the original recording medium to make it unreadable. It is also possible to make it impossible to read not only the actual content portion of the content information to be moved but also the old file entry information and the old VAT conversion table before the move is executed. Further, if the actual content part of the content information to be moved is left and only the old file entry information and the old VAT conversion table before the move execution are made unreadable, a small area is made unreadable. Viewing the target content information is impossible and practical. In addition, when making the actual content portion unreadable, if the file conforms to the MPEG-MOVIE standard, the entire content information cannot be substantially read by selectively making the I picture information unreadable. Can be.

  Furthermore, by making it impossible to read only the actual content portion of the content information to be moved and making the corresponding file entry information readable, it is possible to inform the user that the content information to be moved already exists and that the move has already been performed. Can be informed that viewing is not possible. In such a case, for the user, the control unit 3 displays the display screen 70 as shown in FIG. 9 (“This content has been moved to another medium and cannot be viewed”). It is possible to notify the user that the content that the user wants to view has already been moved to another medium and cannot be viewed through the output unit 14. In addition, the content information protected by copyright can be suppressed by moving it. Even after the processing is performed, access to other copyright-protected content information can be handled in the same way as before the suppression processing, so individual copyright-protected content information can be moved at different times. 9 shows an example of a display screen output to the user from the content information management apparatus 50 according to Embodiment 2 of the present invention. It is a diagram.

  In the content information management apparatus 50 according to the second embodiment of the present invention, only the actual content portion of the move target content information is unreadable, but at this time, the actual content portion of the move target content information If the content information and 32KB area (hereinafter referred to as ECC area) to which ECC (Error Correcting Code) is assigned are shared, the ECC area is mistakenly made unreadable. It may not affect the content information. In order to prevent such a problem, it is desirable that the file management unit 6 of the content information management device 50 according to Embodiment 2 of the present invention performs the following processing.

  FIG. 10 is a diagram for explaining processing when different content information is stored in the same ECC area in the content information management apparatus 50 according to the second embodiment of the present invention.

  As shown in FIG. 10A, in the content information management apparatus 50 according to Embodiment 2 of the present invention, the content information A to be moved is recorded in the same ECC area 84 as the other content information B. In this case, the read processing unit 7 of the file management unit 6 firstly moves the content information A and other content information B stored in the same ECC area 84 as shown in FIG. In this case, the content information that is not to be moved, in this case, the content information B is read, and the write processing unit 8 includes an ECC area 85 that includes only the portion included in the ECC area 84 of the content information B. Are newly created in the empty area as shown in FIG. In this embodiment, an example is shown in which only the content information B stored in the same ECC area 84 is recorded at the beginning of the ECC area 85. However, by adding fixed data such as 00h or FFh, The content information B may be recorded in the same arrangement as the ECC area 84.

  Here, in order to indicate that the content information B in the ECC area 84 has moved to the ECC area 85, the content information management apparatus 50 writes new file entry information on the DVD 21 and invalidates the old file entry information. Hereinafter, a specific example of this processing will be described with reference to FIG. 11, but management information such as file entry information and VAT immediately after the area in which the content information B is stored is not shown in order to simplify the description. . In order to further simplify the description, the description will be made assuming that the size of the file entry information, VAT, etc. is 0 (that is, does not occupy a storage area). FIG. 11A shows file entry information before starting the suppression process, which is information stored immediately after the area where the content information B is stored. This information includes content information A stored in a storage area for 40 sectors from recording addresses 960 to 999, and content information B stored in a storage area for 40 sectors from recording addresses 1000 to 1039. It shows that. At this time, the information included in the ECC area 84 in the content information B (assuming that it is information for 8 sectors) is moved to the ECC area 85 as shown in FIG. New file entry information with the correct information is created. In FIG. 11B, the address information 86 indicating the storage area of the content information B is replaced with the address information 87. That is, in the address information 87, the first 8 sectors of the content information B are recorded in 8 sectors from the recording address 1040 indicating the start of the empty area (that is, the ECC area 85), and the remaining 32 sectors are suppressed. This indicates that recording is performed from the recording address 1008 to the recording address 1039 which is the same location as before the recording. Thereafter, new file entry information created in the area immediately after the content information B moved into the ECC area 85 is added to the DVD 21, and then a new VAT modified to use the new file entry information is added to the old file. Invalidate entry information. With this series of processing, when reading the content information B, information for the first eight sectors of the content information B is read from the recording address 1040, and then information for the remaining 32 sectors is read from the recording address 1008. Therefore, even when the suppression process is performed and the ECC area 84 cannot be read, the content information B can be read correctly. In the above description, file entry information, VAT, and the like do not occupy a storage area. However, since these pieces of information also occupy a storage area, the recording address 1040 of the address information 87 includes old file entry information and old information. It is shifted backward by the amount necessary for storing the VAT.

  Thereafter, as shown in FIG. 10D, the suppression processing unit 59 performs the above-described suppression processing on the ECC area 84 so that information cannot be read out. By performing such processing, it is possible to make the information of the content information A that is the content information to be moved recorded in the ECC area 84 unreadable and stored in the same ECC area 84 as that information. By storing other content information B in the newly created ECC area 85, a configuration that is not affected by the suppression process can be realized. In general, such different content information is rarely recorded in the same ECC area 84, but such a case may occur when one content information is divided into a plurality of content information. In the content information management apparatus 50 according to Embodiment 2 of the present invention, even when the same content information is divided into a plurality of pieces of content information, a part of the divided content information is suppressed. It is possible to perform a move process with

(Other variations)
Although the present invention has been described based on the above embodiment, it is needless to say that the present invention is not limited to the above embodiment. The following cases are also included in the present invention.

  (1) In the second embodiment of the present invention, an example in which the moving target content information cannot be read by irradiating the medium with the laser beam whose output is amplified by the optical amplifying unit 53 has been described. The invention is not limited to this example.

  For example, by separately providing a second head unit (not shown) that generates a laser beam with a higher output, for example, a YAG laser, in addition to the head unit 54 used for reading and writing normal content information. After the content information to be moved is copied to another recording medium, the BCA (Burst Cutting Area) in which the media key of the DVD 21 that is the R medium is recorded may be burned to forcibly make it unreadable. As a result, decryption using the media key can be disabled. Therefore, content information encrypted using a media key such as CPRM on the original recording medium after the content information to be moved is moved. Can be realized. In such a case, the content information cannot be subsequently decrypted using the media key. Therefore, before burning the BCA, the media key is used among the content information stored in the DVD 21. It is desirable to move all encrypted content information to another recording medium.

  (2) In addition to the configuration described in the above embodiment, the content information management apparatus may include a non-volatile memory such as a semiconductor memory that stores the execution status of the process in the event of a power failure. By adopting such a configuration, for example, information related to the move process to be executed at the start of the move (specifically, the move source) Medium type, copy restriction information of contents to be moved, etc.) can be recorded in a nonvolatile memory such as a semiconductor memory. In this case, the content information management device 1 requires a suppression process as a recovery process when the power loss is recovered, and a process executed when the power loss occurs from information read from the nonvolatile memory. It is possible to perform an operation of resuming the suppression process when it is determined whether or not a power interruption has occurred during the process requiring the suppression process. As a result, it is possible to reduce the risk of performing an illegal act of stopping the suppression process by turning off the power before the suppression process. At this time, similarly to the suppression process in the above embodiment, the opening / closing part 22 of the DVD 21 that completes the process may be restricted for the suppression process executed as the recovery process.

  Further, not only before the move is started but also when the suppression process is started after the completion of the move of the content information, the fact that the move of the content information is completed may be recorded in the nonvolatile memory. In this case, as a startup process at the time of restart, it can be determined whether or not the content information move has been completed when the power is cut off, and if the content information move has been completed, it is suppressed. Processing is continued, and if the content processing move has not been completed, incomplete content information in the destination recording medium is overwritten with fixed data such as 00h or FFh and invalidated. It can be performed. As a result, when the power is cut off, even if only incomplete content information is stored in the destination storage medium, the suppression process is performed on the source disk, so that the complete processing is performed. The risk of losing content information can be reduced, and the risk of unauthorized copying of incomplete content information by turning off the power is also reduced by invalidating incomplete content information. I can do it.

  In the above, a non-volatile memory such as a semiconductor memory is used as a storage destination of information related to the move process. However, the present invention is not limited to this, and the recorded information is not lost even if the power is cut off. Any medium may be used as long as it is a simple medium. As a specific example, a method for recording on the HDD 31 or an external hard disk device, or a separate DVD device is added to the content information management device, and recording is performed on a DVD different from the DVD 21 via the added DVD device. Such a method is conceivable.

  (3) In addition to the features described in the second embodiment of the present invention, the content information management device 50 physically stores the data already recorded on the R medium by the DVD device 51 when the move process is instructed. It is possible to confirm whether it is possible to irradiate the laser beam with an output that can be changed to, and allow the move process only when it is confirmed that a laser with sufficient output can be irradiated. As a result, if the DVD device 51 does not have the ability to perform deterrence processing such as physically changing the actual content information on the DVD 21, the move processing itself can be prohibited, so that illegal acts can be performed more reliably. Can be prevented.

  (4) In the embodiment of the present invention, description will be made using a case where content information recorded on the DVD 21 built in the content information management apparatuses 1 and 50 is moved to the HDD 31 in the same apparatus. However, the content information management apparatus of the present invention is not limited to this example. For example, it is needless to say that the content information management apparatuses 1 and 50 are equipped with only the DVD 21 and the content information may be moved to other devices.

  (5) In the embodiment of the present invention, the DVD 21 of the R medium has been described as an example of the recording medium stored in the content information management apparatuses 1 and 50. However, the content information management apparatus of the present invention It is not limited to examples. For example, it is needless to say that the present invention can be applied to a write-once type recording medium such as CD-R or BD-R that is difficult to overwrite any information.

  (6) Each of the above devices is specifically a computer system including a microprocessor, ROM, RAM, a hard disk unit, a display unit, a keyboard, a mouse, and the like. A computer program is stored in the RAM or hard disk unit. Each device achieves its functions by the microprocessor operating according to the computer program. Here, the computer program is configured by combining a plurality of instruction codes indicating instructions for the computer in order to achieve a predetermined function.

  (7) A part or all of the constituent elements constituting each of the above-described devices may be configured by one system LSI (Large Scale Integration). The system LSI is an ultra-multifunctional LSI manufactured by integrating a plurality of components on a single chip, and specifically, a computer system including a microprocessor, ROM, RAM, and the like. . A computer program is stored in the RAM. The system LSI achieves its functions by the microprocessor operating according to the computer program.

  (8) A part or all of the components constituting each of the above devices may be configured as an IC card that can be attached to and detached from each device or a single module. The IC card or the module is a computer system including a microprocessor, a ROM, a RAM, and the like. The IC card or the module may include the super multifunctional LSI described above. The IC card or the module achieves its function by the microprocessor operating according to the computer program. This IC card or this module may have tamper resistance.

  (9) The present invention may be the method described above. Further, the present invention may be a computer program that realizes these methods by a computer, or may be a digital signal composed of the computer program.

  The present invention also provides a computer-readable recording medium such as a flexible disk, hard disk, CD-ROM, MO, DVD, DVD-ROM, DVD-RAM, BD (Blu-ray Disc). ), Recorded in a semiconductor memory or the like. The digital signal may be recorded on these recording media.

  In the present invention, the computer program or the digital signal may be transmitted via an electric communication line, a wireless or wired communication line, a network represented by the Internet, a data broadcast, or the like.

  The present invention may be a computer system including a microprocessor and a memory, wherein the memory stores the computer program, and the microprocessor operates according to the computer program.

  In addition, the program or the digital signal is recorded on the recording medium and transferred, or the program or the digital signal is transferred via the network or the like, and executed by another independent computer system. It is good.

  (10) The above embodiment and the above modifications may be combined.

  As described above, according to the present invention, since the copy-restricted content information recorded on the so-called R medium can be moved again to another recording medium such as an HDD, it has an excellent effect. It is useful as a content information management apparatus, a content information management method, a content information management program, and the like that manage digital content information such as audio.

1 is a block diagram showing a schematic configuration of a content information management device according to Embodiment 1 of the present invention. The figure which shows an example of the content management information memorize | stored in the content management information storage part of the content information management apparatus in Embodiment 1 of this invention. The flowchart for demonstrating the operation | movement step of the content information management apparatus in Embodiment 1 of this invention. The figure for demonstrating the suppression process in the content information management apparatus in Embodiment 1 of this invention. The figure for demonstrating another example of the suppression process part of the content information management apparatus in Embodiment 1 of this invention. FIG. 3 is a block diagram showing a configuration of a content information management apparatus according to Embodiment 2 of the present invention. The figure for demonstrating the process of the suppression process part of the content information management apparatus in Embodiment 2 of this invention. The figure for demonstrating another process example of the suppression process part of the content information management apparatus in Embodiment 2 of this invention. The figure which shows an example of the display screen output with respect to a user from the content information management apparatus in Embodiment 2 of this invention. The figure for demonstrating a process when different content information is memorize | stored in the same ECC area | region in the content information management apparatus in Embodiment 2 of this invention. The figure for demonstrating the update process of management information when different content information is memorize | stored in the same ECC area | region in the content information management apparatus in Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,50 Content information management apparatus 2 Input part 3 Control part 4 Content information management part 5 Content management information storage part 6 File management part 7 Read processing part 8 Write processing part 9,59 Inhibition processing part 10 Decoding part 11 Read / write Insertion unit 12 Reading unit 13 Writing unit 14 Output unit 20, 51 DVD device 21 DVD
22 Opening / closing unit 23 Medium detecting unit 24, 54 Head unit 25, 52 DVD drive unit 30 HDD device 31 HDD
32 HDD drive unit 41 Content information management table 42 Recording medium management table 53 Optical amplification unit 55, 57, 59, 60, 61, 63 Content information 56, 62 lead-in information 58, 64 lead-out information 70 display screen 84, 85 ECC area 86, 87 Address information

Claims (16)

For content information recorded on a recording medium, an input unit for inputting an instruction to move from the recording medium;
A medium type detection unit that detects the type of the recording medium on which the content information in which the instruction is input from the input unit is recorded;
A copy restriction determination unit for determining whether or not there is a copy restriction on the content information;
When the medium type detection unit detects that the type of the recording medium is a hard-to-rewrite recording medium, and the copy restriction determination unit determines that the content information is copy restricted, the content A content information management apparatus comprising: a suppression processing unit that performs a suppression process on the recording medium so that information is not written to the recording medium again. A reading processing unit for reading the content information from the recording medium;
The content information management apparatus according to claim 1, wherein the suppression processing unit performs the suppression processing on the recording medium after the reading processing of the content information by the reading processing unit is completed. A read processing unit for performing read processing of the content information from the recording medium;
A recording processing unit for performing processing for recording the content information read by the reading processing unit on a destination recording medium;
The content information management apparatus according to claim 1, wherein the suppression processing unit performs the suppression process on the recording medium after the recording process of the content information by the recording processing unit is completed. An anomaly detector that detects that a power failure has occurred;
When the abnormality detection unit detects a power failure, the abnormality detection unit further includes an abnormality processing determination unit that determines a process that was being executed before the power failure occurred,
The process that is being executed before the occurrence of a power interruption is resumed as a power-off recovery process when the process determined by the abnormal process determination unit is a process that requires the suppression process. Item 4. The content information management device according to any one of items up to item 3. An anomaly detector that detects that a power failure has occurred;
An abnormality process determination unit that determines a process that was being executed before the power failure occurred when the abnormality detection unit detected a power loss;
When the process determined by the abnormal process determination unit is a process that needs the suppression process, as the power-off recovery process, when the content information recorded on the transfer destination recording medium is incomplete, the transfer destination The content information recorded on a recording medium is invalidated, and when the content information of the destination recording medium is complete, the suppression process is performed on the recording medium. Item 4. The content information management device according to any one of items up to item 3. A restriction unit for restricting removal of the recording medium;
The restriction unit restricts removal of the recording medium before the reading processing unit performs the content information reading process, and removes the restriction on removal of the recording medium after the inhibition processing unit performs the inhibition process. The content information management device according to any one of claims 1 to 5, wherein: A restriction unit for restricting removal of the recording medium;
The restriction unit restricts removal of the recording medium when the abnormality detection unit detects a power interruption, and releases the restriction on removal of the recording medium after the power interruption recovery process is completed. The content information management device according to claim 4 or 5. The said suppression process part records predetermined information in the free area of the said recording medium so that the free capacity of the said recording medium may become smaller than the capacity | capacitance of the said content information. The content information management device according to any one of 7 to 7. The content information management apparatus according to claim 1, wherein the inhibition processing unit performs a finalizing process on the recording medium. The inhibition processing unit includes an information rewriting unit that rewrites information recorded on the recording medium into predetermined information,
The content information management apparatus according to claim 8 or 9, wherein the information rewriting unit rewrites the content information recorded on the recording medium with the predetermined information. The content information management apparatus according to claim 10, wherein the information rewriting unit does not rewrite file entry information having address information indicating an area where the content information is recorded. The said information rewriting part has a light irradiation part which irradiates the light beam amplified to the power which can rewrite the information already recorded on the said recording medium to the said predetermined information, The Claim 10 or Claim characterized by the above-mentioned. 11. The content information management apparatus according to 11. The content information management apparatus according to any one of claims 1 to 7, wherein the inhibition processing unit includes a media key deletion unit that deletes a media key of the recording medium. When the content information shares ECC with other content information when rewriting the content information with the predetermined information, the suppression processing unit newly creates an ECC included in the other content information An ECC creation unit that
The information rewriting unit rewrites the content information with the predetermined information after an ECC is newly created by the ECC creating unit. Content information management device. A first step in which an instruction to move the content information recorded on the recording medium from the recording medium is input;
In the first step, a second step of detecting a type of the recording medium on which the content information to which an instruction is input is recorded;
A third step of determining whether or not there is a copy restriction on the content information;
When it is detected in the second step that the type of the recording medium is a hard-to-rewrite recording medium, and it is determined in the third step that the content information is copy-restricted A content information management method comprising: a fourth step of performing a suppression process on the recording medium so that the content information is not written to the recording medium again. A first step in which an instruction to move content information recorded on a recording medium from the recording medium is input to the computer;
In the first step, a second step of detecting a type of the recording medium on which the content information to which an instruction is input is recorded;
A third step of determining whether or not there is a copy restriction on the content information;
When it is detected in the second step that the type of the recording medium is a hard-to-rewrite recording medium, and it is determined in the third step that the content information is copy-restricted And a fourth step of performing a suppression process on the recording medium so that the content information is not written again to the recording medium.

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