WO2005103906A1 - 記録再生装置、およびコンテンツデータ保護システム - Google Patents
記録再生装置、およびコンテンツデータ保護システム Download PDFInfo
- Publication number
- WO2005103906A1 WO2005103906A1 PCT/JP2005/004360 JP2005004360W WO2005103906A1 WO 2005103906 A1 WO2005103906 A1 WO 2005103906A1 JP 2005004360 W JP2005004360 W JP 2005004360W WO 2005103906 A1 WO2005103906 A1 WO 2005103906A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- content data
- partial information
- recording
- data
- partial
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0092—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors
- G11B20/00927—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which are linked to media defects or read/write errors wherein said defects or errors are generated on purpose, e.g. intended scratches
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/10—Digital recording or reproducing
- G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
- G11B20/1217—Formatting, e.g. arrangement of data block or words on the record carriers on discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
- G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
- G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
- G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
- G11B2220/215—Recordable discs
- G11B2220/216—Rewritable discs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2508—Magnetic discs
- G11B2220/2516—Hard disks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/20—Disc-shaped record carriers
- G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
- G11B2220/2537—Optical discs
- G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
- G11B2220/2575—DVD-RAMs
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B2220/00—Record carriers by type
- G11B2220/40—Combinations of multiple record carriers
- G11B2220/45—Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup
- G11B2220/455—Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/84—Television signal recording using optical recording
- H04N5/85—Television signal recording using optical recording on discs or drums
Definitions
- the present invention relates to a recording / reproducing apparatus for preventing unauthorized use of content data, and a content data protection system including a portable medium, and more particularly, to a technique for preventing unauthorized use and improving user convenience.
- DTCP is a technology for preventing unauthorized copying by, for example, encrypting content data when digitally transferring content data subject to copyright protection.
- content data protection technologies such as DTCP, copy control information is added to content data.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-228522
- the source content data is high-quality content data and the recording capacity of the destination is smaller than the size of the content data, the image quality is deteriorated before the content data is moved. It is customary to perform force transfer by compressing and converting the size to a smaller size. Then, when invalidating the source content data, only the content data whose image has been degraded by the compression conversion remains under the user. In other words, even if the content data is returned to the HDD having a large recording capacity again, the content data is not restored to the high-quality content data, and the profit of the user using the content data is lost.
- the present invention has been made in view of the above-mentioned problem, and enables content data to be moved without incurring loss of content data while preventing unauthorized copying. Even if the content data is reduced in size, when the content data is returned to the source, the original high-quality content data can be recovered and transferred to a portable recording medium or another recording / reproducing device.
- Recording / reproducing apparatus for easily implementing The purpose of the present invention is to provide a data protection system.
- the present invention relates to (a) re-encoding the first content data recorded on the first recording medium into the second content data as the first recording medium. Is written to a different second recording medium, the first content information is written to the second recording medium, and the first invalid information corresponding to the extracted first partial information is written to the second recording medium.
- Content data moving means for changing the first content data to an unplayable state using the encrypted partial information; and (b) using the first partial information recorded on the second recording medium, Content data recovery means for changing the unreproducible first content data to a reproducible state is provided.
- the recording / reproducing apparatus of the present invention (a) stores the first content data, generates the second content data from the first content data, and stores the first partial information in the first (1) Content data power Extraction of content data that changes the generated second content data to a state that cannot be reproduced using the second invalidated partial information generated based on the extracted first partial information Means (b), when writing the second content data to the second recording medium, extracting the first partial information into the first content data, and extracting the extracted first part data.
- the unreproducible second content data may be changed to a reproducible state using the second partial information corresponding to the information.
- the recording / reproducing apparatus from which the content data is moved records the first content data and generates the second content data to be moved to the recording medium. Then, by invalidating a part of the generated second content data and making the second content data unusable, the same content with different data structures can be simultaneously obtained. Avoid having data on the same terminal device.
- moving the second content data to the recording medium only the invalidated partial information is decoded and re-encoded by the first content data, so that all the content data is transferred when the second content data is moved. It is possible to move to a recording medium at a higher speed than to convert and move.
- the present invention is not limited to being realized as a recording / reproducing apparatus, but is a method for controlling a recording / reproducing apparatus (hereinafter, referred to as a recording / reproducing control method), and executing the recording / reproducing control method on a computer system or the like.
- the present invention may be realized as a recording / reproduction control program to be executed, a recording medium on which the recording / reproduction control program is recorded, or the like.
- a system LSI that incorporates a function for protecting the content protected by copyright (hereinafter, referred to as a content data protection function) mounted on the recording / reproducing device, and a content data protection function using an FPGA (Field Programmable).
- Gate Array Implemented as an IP core (hereinafter referred to as a content data protection core) formed in a programmable logic device such as a CPLD (Complex Programmable Logic Device) and a recording medium that records the content data protection core Also! / ,.
- the recording / reproducing apparatus from which the content data is moved records the first content data and moves to the recording medium instead of the first content data. Generate content data. Then, by invalidating a part of the generated second content data and disabling the second content data, the same content data having different data structures can be simultaneously present in the same terminal device. Avoid doing so.
- moving the second content data to the recording medium by decoding and re-encoding only the invalidated partial information, all the content data is converted and moved at the time of moving. It is possible to move to a recording medium at high speed. Further, according to the present invention, by selectively moving the partial information, it is possible to reduce the re-conversion time required for the movement and to reduce the data amount of the partial information to be recorded on the recording medium. Meeting.
- FIG. 1 is a diagram showing an outline of a content data protection system according to an embodiment of the present invention.
- FIG. 2 is a diagram showing a data structure of first invalidated content data and second invalidated content data in the embodiment according to the present invention.
- FIG. 3 is a diagram showing a configuration of a recording / reproducing apparatus according to an embodiment of the present invention.
- FIG. 4 is a diagram showing a detailed configuration of a recording / reproducing device according to an embodiment of the present invention.
- FIG. 5 is a diagram showing reference to inter-frame frame coding in MPEG coding.
- FIG. 6 is a diagram showing a data structure of a picture 'slice' macroblock in MPEG encoding.
- FIG. 7 is a diagram showing syntax in MPEG-2 video encoding.
- FIG. 8 is a diagram showing syntax in MPEG-4 video encoding.
- FIG. 9 is a diagram showing syntax in MPEG-4 AVC (H.264) encoding.
- FIG. 10 is a first diagram showing an operation executed at the time of acquiring content data in the recording / reproducing apparatus according to the embodiment of the present invention.
- Fig. 11 is a second diagram showing an operation executed at the time of acquiring content data in the recording / reproducing apparatus according to the embodiment of the present invention.
- FIG. 12 is a first diagram showing an operation executed at the time of moving content data in the recording / reproducing apparatus according to the embodiment of the present invention.
- FIG. 13 is a second diagram showing an operation executed at the time of moving content data in the recording / reproducing apparatus according to the embodiment of the present invention.
- FIG. 14 is a first diagram showing an operation performed at the time of content data recovery in the recording / reproducing apparatus according to the embodiment of the present invention.
- FIG. 15 is a second diagram showing an operation executed at the time of content data recovery in the recording / reproducing apparatus according to the embodiment of the present invention.
- FIG. 16 is a diagram showing the syntax of MPEG-2 Systems Transport Stream.
- FIG. 17 is a diagram showing the syntax of the MPEG-2 Systems Program Stream.
- FIG. 18 is a diagram showing a general recording medium.
- FIG. 19 is a diagram showing the syntax of MPEG-2 Systems Transport Stream.
- Read / write unit 120 1st content data invalidation unit
- the recording / reproducing apparatus When moving the first content data, replaces the first content data with the second content data instead of the first content data.
- the one or more first partial information that also extracted the first content data power is written to the second recording medium, and one-to-one with the extracted one or more first partial information.
- the first content data is changed to a non-reproducible state by using one or more pieces of the first invalidation part information corresponding to the first content data. Then, when recovering the first content data, the first content data in the non-reproducible state can be reproduced using the one or more pieces of first partial information recorded on the second recording medium.
- the feature is to change to.
- the recording / reproducing apparatus when the recording / reproducing apparatus acquires the first content data, the recording / reproducing apparatus stores the first content data, and stores the first content data. And also extracts one or more first partial information from the first content data, and generates one or more second invalidated partial information based on the extracted one or more first partial information. To change the generated second content data to an unplayable state. Change. Then, when writing the second content data in place of the first content data on the second recording medium, one or more first partial information is extracted as the first content data, and the extracted one or more It is also characterized in that the non-reproducible second content data is changed to a reproducible state using one or more pieces of second partial information corresponding to the first partial information on a one-to-one basis.
- First content data is content data encoded by the first encoding method.
- “Second content data” refers to a first encoding method in which the size of content data is reduced, or is encoded in a second encoding method different from the first encoding method.
- the "second content data” is content data encoded by a second encoding method different from the first encoding method.
- the "first invalidated content data” is defined as the first invalidated data in which the data of one or more blocks in the first content data cannot be reproduced as it is.
- the "second invalidated content data” refers to second content data that cannot be reproduced as it is by invalidating one or more blocks of data in the second content data. .
- First partial information refers to data of a block that is invalidated in the first content data.
- “Second partial information” refers to data of a block that is invalidated in the second content data.
- the "first invalidation partial information” refers to data of a block invalidated in the first content data.
- “Second invalidation partial information” refers to data of a block invalidated in the second content data.
- the recording / reproducing apparatus 101 As shown in FIG. 1, the recording / reproducing apparatus 101 according to the present embodiment
- the first content data supplied from the data supply device 102 is recorded on a recording device such as an HDD (Hard Disk Drive) built in the recording / reproducing device 101, for example. Further, in response to a user operation, the first content data or the second content data obtained by lowering the quality of the first content data is transferred to the recording / reproducing device 103, the portable medium 104, or the like. Move to one. Also, the first content data supplied from the content data supply device 102 is deleted or made unreproducible.
- HDD Hard Disk Drive
- the encrypted second content data is recorded, and when the second content data is moved, the encryption is decrypted and the second content data is moved. Good.
- the second content data obtained by re-encoding the first content data is transferred to the portable medium 104.
- the case where the recording / reproducing apparatus 101 recovers after moving to the destination will be described.
- the recording / reproducing apparatus 101 when the recording / reproducing apparatus 101 acquires the first content data 105a, the recording / reproducing apparatus 101 accumulates the first content data 105a and simultaneously stores the first content data 105a.
- the second content data 106a is generated from the data 105a, and one or more pieces of first partial information 107a are extracted from the first piece of content data 105a, and based on the extracted one or more pieces of first partial information 107a.
- the generated second content data 106a is changed to a non-reproducible state using the one or more pieces of the second invalidation part information 108b generated by the above.
- the recording / reproducing device 101 replaces the second content data 106a obtained by re-encoding the first content data 105a with the first content data 105a.
- one or more first partial information 107a extracted from the first content data 105a is written to the recording / reproducing device 103 or the portable medium 104 and extracted.
- the first content data 105a is changed to a non-reproducible state using the one or more first invalidation partial information 107b corresponding to the one or more first partial information on a one-to-one basis.
- the first content data 105a is recovered using the one or more pieces of first partial information 107a recorded on the recording / reproducing device 103 or the portable medium 104.
- the content data, that is, the first invalidated content data 105b is changed to a reproducible state.
- the recording / reproducing device 101 sets one or more pieces of the first partial information 107a From the first content data 105a, and using one or more pieces of second partial information (not shown) corresponding to the extracted one or more pieces of first partial information 107a on a one-to-one basis.
- the second content data that is, the second invalidated content data 106b is changed to a reproducible state.
- the first partial information recording area 105 is an area in which data can be read and written only by a device that has passed authentication with the portable medium 104.
- the recording / reproducing apparatus 101 includes a first content data receiving unit 111, a first content data recording unit 112, and an invalidation / activation selection unit 113. , Decoding unit 114, encoding unit 115, second content data invalidating unit 116, second invalidated content data recording unit 117, second invalidated content data validating unit 118, read / write unit 119 , A first content data invalidating section 120, a second invalidated content data validating section 121, and the like.
- the recording / reproducing apparatus 101 includes a non-volatile recording apparatus, an IZO interface, a read / write apparatus, a system LSI, and an operation for processing a program for controlling these. It has a processing device and the like.
- the first content data receiving unit 111 receives the first content data from the external device. For example, a tuner that receives digital broadcasts, an IZO interface that serves as a window for data communication with external devices, and the like.
- First content data recording section 112 records the received first content data.
- a non-volatile recording device in which a recording area is allocated for first content data.
- the invalidation / activation selection unit 113 selects a part to be invalidated / activated based on the first content data recorded in the first content data recording unit 112. For example, there are an invalidation / validation selection unit formed in the system LSI, and an arithmetic processing unit that is executing the invalidation / validation selection program recorded in the nonvolatile recording device.
- the decryption unit 114 decrypts the first content data.
- a decryption unit formed in a system LSI an arithmetic processing unit that is executing a decryption program recorded in a nonvolatile recording device, and the like.
- the encoding unit 115 encodes the data encoded by the first encoding system by the second encoding system.
- the second content data is generated based on the decrypted first content data.
- a coding unit formed in a system LSI an arithmetic processing unit executing a coding program recorded in a nonvolatile recording device, and the like.
- the second content data invalidating section 116 invalidates a part (partial information) of the second content data that has been converted by the selection of the invalidation / validation selecting section 113204.
- a first invalidation unit formed in the system LSI an arithmetic processing unit executing a first invalidation program recorded in a nonvolatile recording device, and the like.
- the second invalidated content data recording unit 117 records the invalidated second content data.
- this is a nonvolatile recording device in which a recording area is allocated for second invalidated content data.
- the second invalidated content data validating unit 118 validates the second content data when moving the invalidated second content data to the portable medium 104.
- a first validation unit formed in the system LSI a processing unit executing the first validation program recorded in the nonvolatile recording device, and the like.
- the read / write unit 119 reads the partial information extracted by the first content data invalidating unit 120 and the second content data from the portable medium 104, or writes the partial information to the portable medium 104.
- the first content data invalidating section 120 invalidates the first content data.
- a second invalidation unit formed in the system LSI an arithmetic processing unit executing a second invalidation program recorded in a nonvolatile recording device, and the like.
- the second invalidated content data validating unit 121 validates the first content data invalidated by the first content data invalidating unit 120.
- a second enabling unit formed in the system LSI an arithmetic processing unit executing the second enabling program recorded in the nonvolatile recording device, or the like.
- the invalidation / validation selection section 113 the second invalidated content data validating section 118, the first content data invalidating section 120, and the second invalidating section.
- Each of the content data validating units 121 is configured as described in (1)-(4) below.
- Invalidation / validation selection unit 113 is composed of a first content data analysis unit 122, a first content data invalidation / validation determination unit 123, and the like.
- the first content data analysis unit 122 reads the first content data recorded in the first content data recording unit 112, and analyzes the read first content data.
- the first content data invalidation / validation determination unit 123 specifies the first partial information to be invalidated in the first content data. In addition, the first invalidated partial information to be validated in the first invalidated content data is specified.
- the second content data invalidating section 116 includes a second invalidated data generating section 124, a second invalidated data synthesizing section 125, and the like.
- the second invalidation data generator 124 generates invalidation data for invalidating the second partial information.
- the second invalidation data synthesizing unit 125 combines the second content data and the invalidation data. And invalidate the second content data.
- the second invalidated content data validating section 118 is composed of a second invalidated content data synthesizing section 126 and the like.
- the second invalidated content data synthesizing unit 126 is recorded in the second invalidated content data recording unit 117 based on the result determined by the first content data invalidating 'validation determining unit 123.
- the second invalidated content data and the second partial information transferred from the encoding unit 115 are combined, the second invalidated content data is validated, and the second validated content data is validated.
- Invalidated content data that is, second content data, is recorded in the content data recording area 106 of the portable medium 104 via the read / write unit 119.
- the first content data invalidating section 120 is composed of a first invalidated data generating section 127, a first invalidated data synthesizing section 128, and the like.
- the first invalidation data generation unit 127 generates invalidation data for invalidating the first partial information.
- the first invalidation data synthesizing unit 128 synthesizes the first content data and the invalidation data, and invalidates the first content data.
- the second invalidated content data validating section 121 is composed of a first partial information analyzing section 130, a first invalidated content data synthesizing section 129, and the like.
- the first partial information analysis unit 130 reads the first partial information from the partial information recording area 105 of the portable medium 104 via the read / write unit 119, and prays for the read first partial information. Then, the analysis result and the analyzed first partial information are transferred to the first invalidated content data synthesizing unit 129.
- the first invalidated content data synthesizing unit 129 is recorded in the first content data recording unit 112 based on the result determined by the first content data invalidating 'validation determining unit 123.
- the first invalidated content data is combined with the first partial information analysis unit 130 to transfer the first partial information, and the first invalidated content data is validated.
- the encrypted content data that is, the first content data, is recorded in the first content data recording unit 112. Next, the area selected by the invalidation / activation selection unit 113 will be described.
- MPEG-1 MPEG-2
- MPEG-4 MPEG-4 AVC
- a difference between a reference image as a source of the difference and an image to be encoded is obtained, and the area of the difference is subjected to orthogonal transformation or the like. This is a method of converting and compressing.
- images 1402-1408 are images arranged in the display order at each time.
- a difference between the image 1402 and the image 1400 is obtained, and a residual of the difference is encoded.
- the image power of both the image 1400 and the image 1402 also takes a difference, and the residual is encoded.
- the image 1400 is encoded by the intra-frame encoding method, and can be decoded independently without referring to another image. It is also called I Picture. Since I Picture can be reproduced independently, it serves as a starting point for intermediate reproduction and is referred to from other differentially coded images. And since it is a key image, it is also called a key frame.
- one picture is Slices composed of 1500 macroblocks, and divided into regions and encoded /
- I-picture intra-picture encoding
- P-Picture inter-picture encoding
- the coding method is determined based on the information indicating the vop-coding-type stored in VOPH (vop-header). It is possible.
- information indicating a VPH (VideoPacketHeader) included in a VideoPacket corresponding to a slice of MPEG-2 also includes information indicating a vop-coding-type.
- the recording / reproducing device 101 when acquiring the content data supplied from the content data supply device 102, the recording / reproducing device 101 performs a first content data recording process (S101) and a second content data generation process.
- a process (S102), a second content data invalidation process (S103), and a second invalidated content data recording process (S104) are executed.
- second content data recorded on the first content data recording unit 112 and moved to the portable medium 104 instead of the first content data is generated, and the generated second content data is generated. Is recorded in the second invalidated content data recording unit 117 in an invalidated state.
- the “first content data recording process” refers to a process of recording the first content data in the first content data recording unit 112.
- the "second content data generation process” refers to a process of generating the first content data power second content data recorded in the first content data recording unit 112.
- the "second content data invalidation process” refers to a process of invalidating the entire second content data by invalidating the second partial information.
- the "second invalidated content data recording process” refers to a process of recording the second invalidated content data in the second invalidated content data recording unit 117.
- the recording / reproducing apparatus 101 uses the first content data receiving unit 111 to receive an external device power such as the content data supply apparatus 102.
- the content data is recorded in the first content data recording section 112 (S111).
- the invalidation / validation selection unit 113 reads out the first content data recorded in the first content data recording unit 112 (S112), and selects the first content data from the read first content data. Is specified (S113).
- the decryption unit 114 decrypts the first content data read out by the invalidation / validation selection unit 113 (S114).
- the encoding unit 115 encodes the first content data decoded by the decoding unit 114 based on the second encoding method to generate second content data (S115).
- the second content data invalidating section 116 outputs the first content data specified by the invalidation / validation selecting section 113 to the second content data generated by the encoding section 115.
- the second partial information corresponding to the partial information is invalidated, the second content data is changed to the second invalidated content data (S117), and the second invalidated content data is changed to the second invalidated content data.
- the information is recorded in the recording unit 117 (S118).
- the invalidation / validation selection section 113 reads out the first content data recorded in the first content data recording section 112 by the first content data analysis section 122. Then, the read first content data is analyzed. The analyzed result is transferred to the first content data invalidation / validation determination unit 123, and the analyzed first content data is transferred to the decoding unit 114. The first content data invalidation 'activation determination unit 123 Based on the result analyzed by the content data analysis unit 122, it is determined whether or not the force is the first partial information corresponding to the second invalidated partial information. The result of the determination is transferred to encoding section 115 and second invalidation data synthesizing section 125.
- second content data invalidating section 116 generates second invalidated partial information in second invalidated data generating section 124.
- the second invalidation data synthesizing section 125 based on the result determined by the first content data invalidation / validation determining section 123, the second content data transferred from the encoding section 115 is output.
- the second content data and the second invalidation data generation unit 124 combine the transferred second invalidation part information to invalidate the second content data.
- the invalidated second content data that is, the second invalidated content data, is recorded in the second invalidated content data recording unit 117.
- the invalidation / validation selection unit 113 determines that the encoding scheme of the first content data is MPEG-2 and the encoding scheme of the second content data is MPEG-4.
- the first content data analysis unit 122 analyzes the PH in which Picture information included in the first content data is stored, and the first content data invalidation / validation determination unit 123 generates the first content data. It is determined that the Picture of the picturing-coding-type power Picture included in the PH analyzed by the content data analysis unit 122 of the above is invalidated (see FIG. 7;).
- the second content data invalidating section 116 generates the macroblock 1600 located immediately after one of the MPEG-4 VOPH 1702 and VPH 1704 in the second invalidated data synthesizing section 125. of the first data byte is replaced with the second invalidation portion information generated Oite the second invalidation data generation unit 124 (see FIG. 8.) 0
- the recording / reproducing device 101 when moving the acquired content data to either the recording / reproducing device 103 or the portable medium 104, the recording / reproducing device 101 performs the second partial information generation process. (S121), second invalidated content data validating process (S122), second content data transferring process (S123), first partial information transferring process (S124), first content data invalidating The process (S125) and the first content data rewriting process (S126) are executed. Then, the second invalidation recorded in the second invalidation content data recording unit 117 The content data is validated and moved to the portable medium 104.
- “Second partial information generation process” refers to a process of generating second partial information from first partial information.
- the "second invalidated content data validating process” means that the second invalidated content data recorded in the second invalidated content data recording unit 117 is obtained by using the second partial information. This refers to the process of enabling.
- the “second content data transfer process” refers to a process of writing the second content data in the content data recording area 106 of the portable medium 104.
- the "first partial information transfer process” refers to a process of writing the first partial information in the partial information recording area 105 of the portable medium 104.
- the "first content data invalidation process” refers to a process of invalidating the entire first content data by invalidating the first partial information.
- First content data rewriting process refers to a process of rewriting first content data recorded in first content data recording section 112 to first invalidated content data.
- the recording / reproducing device 101 uses the invalidation / validation selection unit 113 to record the first content data recorded on the first content data recording unit 112.
- the content data is read (S131), and first partial information corresponding to the second partial information is specified for the read first content data (S132).
- the decoding unit 114 decodes the first partial information specified by the invalidation / validation selection unit 113 (S133).
- the encoding unit 115 encodes the first partial information decoded by the decoding unit 114 based on the second encoding method to generate second partial information (S134).
- the second invalidated content data validating unit 118 reads out the second invalidated content data recorded in the second invalidated content data recording unit 117, and reads the read second invalidated content.
- the second invalidated part information is validated using the second partial information generated by the encoding unit 114, and the second invalidated content data is changed to the second content data.
- the second content data is recorded in the content data recording area 106 of the portable medium 104 via the read / write unit 119 (S136). Also, read the first partial information. The information is recorded in the partial information recording area 105 of the portable medium 104 via the read / write unit 119 (SI 37).
- the first content data invalidating section 120 generates first invalidated partial information (S138), invalidates the first partial information using the generated first invalidated partial information,
- the first content data is changed to the first invalidated content data (S139), and the first content data recorded in the first content data recording unit 112 is rewritten to the first invalidated content data. (S140).
- the invalidation / validation selection unit 113 reads out the first content data recorded in the first content data recording unit 112 by the first content data analysis unit 122. Then, the read first content data is analyzed. The analyzed first content data is transferred to the encoding unit 115. The first content data invalidation / validation determination unit 123, based on the result analyzed by the first content data analysis unit 122, generates a second content data corresponding to the first invalidation partial information. It is determined whether the force is the partial information of 1 or not. If the result of the determination made by the first content data invalidation / validation determination unit 123 by the decryption unit 114 is the first partial information, the first partial data corresponding to the first invalidated partial information is determined. Decrypt information. The decoded first partial information is encoded based on a second encoding method to generate second partial information.
- the second invalidated content data validating section 118 is a second invalidated content data synthesizing section 126, and the first invalidated / validated judging section 123 determines the first invalidated content data. Based on the determined result, the second invalidated content data read from the second invalidated content data recording unit 117 and the second partial information generated by the encoding unit 115 are combined, Activate the second content data. The activated second content data is recorded in the content data recording area 106 of the portable medium 104 via the read / write unit 119.
- the invalidation / validation selection unit 113 reads out the first content data recorded in the first content data recording unit 112 by the first content data analysis unit 122 and reads out the first content data. Analyze the first content data. The analyzed first content data is transferred to the invalidation data synthesizing unit 614. In the first content data invalidation / validation determination unit 123, based on the result analyzed by the first content data analysis unit 122, It is determined whether to invalidate the first partial information. The result of the determination is transferred to the first invalidation data synthesis unit 128.
- the first content data invalidating section 120 converts the data from the first content data analyzing section 122 before combining it with the first invalidated partial information in the first invalidated data synthesizing section 128.
- the transmitted first partial information is recorded in the partial information recording area 105 of the portable medium 104 via the read / write unit 119.
- first invalidation data generation section 127 generates first invalidation partial information.
- the first invalidation data synthesizing unit 128 transmits the first content data transferred from the first content data analysis unit 122 based on the result determined by the first content data invalidation / validation determination unit 123.
- the first invalidation data generation unit 127 combines the transferred first invalidation partial information and invalidates the first partial information.
- the invalidated first partial information that is, the first invalidated partial information, is recorded in the first content data recording unit 112.
- the second invalidated content data validating section 118 uses the invalidation key in the content data synthesizing section 818.
- the picture determined as an I Picture in the dangling activation selection unit 113 is replaced with the second partial information transferred from the encoding unit 115 to validate the second content data.
- the first invalidated data synthesizing section 128 When the first content data invalidating section 120 invalidates the first content data encoded by MPEG-2, the first invalidated data synthesizing section 128 generates the first content data invalidating section 120.
- the first invalidation data generation unit 127 generates the first byte of the first macroblock data included in each slice of the Picture determined to be I-picture by the invalidation determination unit 123. Invalidate the first content data by replacing it with invalidation data.
- the recording / reproduction device 101 performs the second content data deletion process (S 141) and the first partial information reading process (S 141 142), the first invalidation content data activation process (S143), the first invalidation The content data rewriting process (S144) is executed. Then, by using the first partial information recorded in the partial information recording area 105 of the portable medium 104, the invalidated first content data is validated.
- the "second content data deletion process” refers to a process of deleting the second content data recorded in the content data recording area 106 of the portable medium 104.
- the "first partial information reading process” refers to a process of reading the first partial information from the partial information recording area 105 of the portable medium 104.
- the "first invalidated content data activating process” refers to the first content data recording unit 1
- the "first invalidated content data rewriting process” refers to rewriting the first invalidated content data recorded in the first content data recording unit 112 into the first content data. Refers to processing.
- the recording / reproducing apparatus 101 deletes the second content data recorded in the content data recording area 106 of the portable medium 104 (S15 Do or S15 Do).
- the invalidation / activation selection unit 113 reads out the first invalidation content data recorded in the first content data recording unit 112 (S152), and from among the read first invalidation content data, The first invalidated partial information is specified (S153), and the second invalidated content data validating unit 121 records the first partial information recorded in the partial information recording area 105 of the portable medium 104.
- the first invalidation partial information specified by the invalidation / validation selection unit 113 is validated using the read first partial information, and the first invalidation context is Content data to the first content data (S155), and the first content The first invalidation content data recorded in the data recording unit 112 is rewritten to the first content data (S156).
- the invalidation / validation selection section 113 reads out the first invalidation content data recorded in the first content data recording section 112 by the first content data analysis section 122. Then, the read first invalidated content data is analyzed. The first content data invalidation / validation determination unit 123 solves the first content data analysis unit 122 Based on the analyzed result, it is determined whether the information is the first invalidation partial information. The result of the determination and the first invalidation partial information are transferred to first invalidation content data combining section 129.
- the second invalidated content data validating unit 121 includes a first partial information analyzing unit 130, which reads the first partial information from the partial information recording area 105 of the portable medium 104 via the read / write unit 119. The information is read, and the read first partial information is analyzed. The analysis result and the first partial information are transferred to the first invalidated content data synthesizing unit 129.
- the first invalidated content data synthesizing unit 129 determines the result analyzed by the first content data analyzing unit 122 and the first content data invalidating / validating determining unit 123 determines it. Based on the result, the first invalidated partial information transferred from the first content data analysis unit 122 and the first partial information transferred from the first partial information analysis unit 130 are combined. Activate the first invalidation partial information.
- the activated first partial information is recorded in the first content data recording unit 112.
- the second invalidated content data validating unit 121 validates the first content data encoded and invalidated by MPEG-2, that is, the first invalidated content data.
- the first invalidated content data synthesizing section 129 converts the picture determined to be I Picture by the first content data invalidating / validating determining section 123 to the first partial information analyzing section 130. Substitute with the first partial information transferred from, and activate the first invalidation content data.
- the recording / reproducing apparatus 101 in the embodiment when moving the content data, a part of the source content data is incompletely recorded, thereby recording the content data. It can be invalidated without deleting all of the content data. Then, when returning the moved content data to the recording / reproducing apparatus 101, the original high-quality content data can be restored by completely erasing the data using a part of the data.
- the content data is simultaneously converted in size or encoded by a different encoding method, and a part of the data is invalidated. Recording and playback of two reproducible content data It is possible to minimize the content data transferred to the destination that is not held in the device, and to move the content data at high speed.
- the first content data invalidating unit 120 or the second content data invalidating unit 116 when invalidating the content data of the TS (Transport Stream) of MPEG-2 Systems, The whole or a part of the TS packet including the leading data of each Slice of the key frame may be invalidated.
- the data of image and sound is packetized (divided) into a unit called a pack suitable for storage such as a DVD and transmitted. Therefore, when the first content data and the converted second content data are handled by the PS, if the whole or a part of the pack including the leading data of each slice of the key frame is invalidated, Content data can be invalidated.
- the disk is managed in units of a plurality of sectors. Invalidate the sector including the area where the configuration information required for I Picture or audio data playback is recorded By doing so, it is possible to invalidate desired content data while facilitating disk access.
- the partial information may be encrypted and recorded with an arbitrary encryption key, or may be generated along with the encryption.
- the encryption key may be recorded as the second partial information required for playback.
- the content data may be supplied via a recording medium in addition to being supplied from an external device card, such as the content data supply device 102.
- the period in which the content data is invalidated is such that the I Pictture is inserted instead of the I Pictture required for reproduction.
- the cycle may be N times the interval (N is a natural number of 2 or more).
- the period for invalidating content data is not the period for inserting I-pictures required for playback, but the time during which the source and destination content data are always I-pictures. P-Picture used for close reference or B-Picture used for reference! / ⁇ .
- the invalidation / validation selection unit 113 further includes a second content data invalidation unit 116, a first content data invalidation unit 120, and a second invalidated content data validation unit. 118 and the function to be realized by any of the second invalidated content data validating unit 121.
- (11) Instead of invalidating the data of the first macroblock of each slice constituting the I Picture, it is not necessary to invalidate all the slices. You may want to invalidate only randomly selected slices.
- the data range may be set to an arbitrary location or an arbitrary size for easy processing.
- Each of the functional blocks shown in the block diagrams of FIGS. 3 and 4 is typically realized as an LSI which is an integrated circuit. These may be individually integrated into one chip, or may be integrated into one chip so as to include some or all of them. One function block other than the memory You may be puppy. Also, depending on the difference in the degree of integration of the LSI, it is sometimes called IC, system LSI, super LSI, or ultra LSI. Further, the method of circuit integration is not limited to LSI, but may be realized by a dedicated circuit or a general-purpose processor.
- An FPGA Field Programmable Gate Array
- a reconfigurable processor that can reconfigure the connection and setting of circuit cells inside the LSI may be used.
- the functional blocks may be integrated using the technology. If there is a possibility of adaptation of biotechnology, it may be realized by biotechnology. Further, among the functional blocks, only the means for storing the data to be encoded or decoded may be configured differently without performing one chip.
- the recording / reproducing apparatus has a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a drive, and the like.
- CPU Central Processing Unit
- RAM Random Access Memory
- ROM Read Only Memory
- Drive refers to HD (Hard Disk), DVD-RAM, BD-RE (Blu-ray Disk
- a device that can read and write data from any recording medium such as a Rewritable) or SD (Secure Digital) memory card.
- an OS for controlling the recording / reproducing device is installed in either the ROM or a recording medium such as these, and the recording is performed by executing the OS.
- Each function of the playback device may be realized.
- an application program that is executed under the operation of the OS is installed and each function is realized by executing the application program.
- the recording and reproducing control program Optical recording media (eg, CD-ROM, etc.), magnetic recording media (eg, HD, etc.), magneto-optical recording media (eg, HD) can be read by hardware systems such as computer systems, embedded systems, etc. , MO, etc.), a computer-readable recording medium such as a semiconductor memory (for example, a memory card, etc.). Then, via these recording media, other hard The recording difference generation control program may be executed in the system.
- the recording / playback control program is held in a hardware system on the network, and the recording / playback control program is executed by another hardware system that has downloaded the recording / playback control program via the network. Even if you do.
- the recording / reproducing device has an IZO interface, and may receive content data from another external device or a recording medium via the ⁇ interface. Or sending the content data to a recording medium.
- the present invention relates to a recording / reproducing device or the like for preventing unauthorized copying of recorded content data, and in particular, for returning low-quality content data that has been subjected to compression conversion to a recording / reproducing device from a destination.
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Storage Device Security (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/593,727 US7856168B2 (en) | 2004-04-20 | 2005-03-11 | Recorder/reproducer and content data protection system for preventing unauthorized use of content |
EP05720631A EP1746512A4 (en) | 2004-04-20 | 2005-03-11 | RECORDING / PLAYING DEVICE AND CONTENTS DATA PROTECTION SYSTEM |
JP2006519411A JP4722042B2 (ja) | 2004-04-20 | 2005-03-11 | 記録再生装置、記録再生制御方法、記録再生制御プログラム、および半導体装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004123911 | 2004-04-20 | ||
JP2004-123911 | 2004-04-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005103906A1 true WO2005103906A1 (ja) | 2005-11-03 |
Family
ID=35197158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/004360 WO2005103906A1 (ja) | 2004-04-20 | 2005-03-11 | 記録再生装置、およびコンテンツデータ保護システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US7856168B2 (ja) |
EP (1) | EP1746512A4 (ja) |
JP (1) | JP4722042B2 (ja) |
CN (1) | CN100437526C (ja) |
WO (1) | WO2005103906A1 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007193654A (ja) * | 2006-01-20 | 2007-08-02 | Nec Personal Products Co Ltd | コンテンツ記録装置、コンテンツ処理方法、およびプログラム |
JP2009105965A (ja) * | 2009-02-06 | 2009-05-14 | Hitachi Ltd | 映像音声記録再生装置及び記録再生方法 |
JP2011130507A (ja) * | 2011-03-16 | 2011-06-30 | Hitachi Ltd | 映像音声記録再生装置及び記録再生方法 |
JP4937122B2 (ja) * | 2004-11-30 | 2012-05-23 | パナソニック株式会社 | 記録再生装置 |
JP2013158020A (ja) * | 2013-03-25 | 2013-08-15 | Hitachi Consumer Electronics Co Ltd | 映像音声記録再生装置及び記録再生方法 |
JP2014068375A (ja) * | 2013-12-09 | 2014-04-17 | Hitachi Consumer Electronics Co Ltd | 映像音声記録再生装置及び記録再生方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4941737B2 (ja) * | 2007-04-27 | 2012-05-30 | ソニー株式会社 | 記録装置および方法、並びに、プログラム |
US20090217057A1 (en) * | 2008-02-26 | 2009-08-27 | Dell Products L.P. | Download And Burn To Rent System |
JP2013229860A (ja) * | 2012-03-28 | 2013-11-07 | Panasonic Corp | 記録装置および記録システム |
US8977776B1 (en) * | 2012-06-18 | 2015-03-10 | Amazon Technologies, Inc. | Content streaming with bandwidth management |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1045388A1 (en) | 1999-04-16 | 2000-10-18 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for preventing illegal usage of multimedia content |
EP1233414A2 (en) | 2001-02-15 | 2002-08-21 | Matsushita Electric Industrial Co., Ltd. | Data nullification device for nullifying digital content recorded on a recording medium |
JP2002278859A (ja) * | 2001-03-16 | 2002-09-27 | Nec Corp | コンテンツ配信システム、コンテンツ配信方法及びコンテンツを再生するためのコンテンツ再生装置 |
JP2004005816A (ja) * | 2002-05-31 | 2004-01-08 | Toshiba Corp | 情報記録再生装置及び情報記録再生方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001093226A (ja) * | 1999-09-21 | 2001-04-06 | Sony Corp | 情報通信システムおよび方法、ならびに、情報通信装置および方法 |
US7249105B1 (en) * | 2000-03-14 | 2007-07-24 | Microsoft Corporation | BORE-resistant digital goods configuration and distribution methods and arrangements |
US7298844B2 (en) | 2001-04-11 | 2007-11-20 | Matsushita Electric Industrial Co., Ltd. | Recording/reproducing apparatus, data moving method, and data deletion method |
JP4139114B2 (ja) * | 2002-02-04 | 2008-08-27 | 松下電器産業株式会社 | デジタルコンテンツ管理装置およびデジタルコンテンツ管理プログラム |
FR2843517B1 (fr) * | 2002-08-06 | 2005-02-11 | Medialive | Dispositif pour le brouillage de contenus multimedias et audiovisuels de type mpeg-4 |
FR2845556B1 (fr) * | 2002-10-03 | 2005-02-11 | Medialive | Embrouillage adaptatif et progressif de flux video |
FR2845553B1 (fr) * | 2002-10-03 | 2009-10-23 | Medialive | Desembrouillage adaptatif et progressif de flux video |
US7630492B2 (en) * | 2002-10-03 | 2009-12-08 | Daniel Lecomte | Secure audio stream scramble system |
FR2845543B1 (fr) * | 2002-10-03 | 2005-02-04 | Medialive | Systeme d'embrouillage securise de flux audio |
US8695029B2 (en) * | 2002-10-03 | 2014-04-08 | Nagra France | System and method of adaptive and progressive descrambling of streaming video |
US7613298B2 (en) * | 2002-10-03 | 2009-11-03 | Medialive | System and process for adaptive and progressive scrambling of video streams |
-
2005
- 2005-03-11 WO PCT/JP2005/004360 patent/WO2005103906A1/ja not_active Application Discontinuation
- 2005-03-11 CN CNB2005800065429A patent/CN100437526C/zh not_active Expired - Fee Related
- 2005-03-11 JP JP2006519411A patent/JP4722042B2/ja not_active Expired - Fee Related
- 2005-03-11 US US10/593,727 patent/US7856168B2/en not_active Expired - Fee Related
- 2005-03-11 EP EP05720631A patent/EP1746512A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1045388A1 (en) | 1999-04-16 | 2000-10-18 | Deutsche Thomson-Brandt Gmbh | Method and apparatus for preventing illegal usage of multimedia content |
JP2000347946A (ja) * | 1999-04-16 | 2000-12-15 | Deutsche Thomson Brandt Gmbh | マルチメディアコンテンツの不正な使用を防止する方法及び装置 |
EP1233414A2 (en) | 2001-02-15 | 2002-08-21 | Matsushita Electric Industrial Co., Ltd. | Data nullification device for nullifying digital content recorded on a recording medium |
JP2002278859A (ja) * | 2001-03-16 | 2002-09-27 | Nec Corp | コンテンツ配信システム、コンテンツ配信方法及びコンテンツを再生するためのコンテンツ再生装置 |
JP2004005816A (ja) * | 2002-05-31 | 2004-01-08 | Toshiba Corp | 情報記録再生装置及び情報記録再生方法 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4937122B2 (ja) * | 2004-11-30 | 2012-05-23 | パナソニック株式会社 | 記録再生装置 |
JP2007193654A (ja) * | 2006-01-20 | 2007-08-02 | Nec Personal Products Co Ltd | コンテンツ記録装置、コンテンツ処理方法、およびプログラム |
JP2009105965A (ja) * | 2009-02-06 | 2009-05-14 | Hitachi Ltd | 映像音声記録再生装置及び記録再生方法 |
JP2011130507A (ja) * | 2011-03-16 | 2011-06-30 | Hitachi Ltd | 映像音声記録再生装置及び記録再生方法 |
JP2013158020A (ja) * | 2013-03-25 | 2013-08-15 | Hitachi Consumer Electronics Co Ltd | 映像音声記録再生装置及び記録再生方法 |
JP2014068375A (ja) * | 2013-12-09 | 2014-04-17 | Hitachi Consumer Electronics Co Ltd | 映像音声記録再生装置及び記録再生方法 |
Also Published As
Publication number | Publication date |
---|---|
US20080239909A1 (en) | 2008-10-02 |
US7856168B2 (en) | 2010-12-21 |
EP1746512A1 (en) | 2007-01-24 |
CN100437526C (zh) | 2008-11-26 |
CN1926520A (zh) | 2007-03-07 |
EP1746512A4 (en) | 2009-04-22 |
JPWO2005103906A1 (ja) | 2008-03-13 |
JP4722042B2 (ja) | 2011-07-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4722042B2 (ja) | 記録再生装置、記録再生制御方法、記録再生制御プログラム、および半導体装置 | |
JP4902644B2 (ja) | データ処理装置、データ処理方法、データ処理プログラム、およびそのデータ処理プログラムを記録した記録媒体、並びに集積回路 | |
US20080260161A1 (en) | Terminal Device and Copyright Protection System | |
US8031868B2 (en) | Apparatus, method, and computer program product for recording content | |
JP2007013689A (ja) | 情報処理装置および復号制御方法 | |
JP4937122B2 (ja) | 記録再生装置 | |
US8422861B2 (en) | Content management device | |
CN109757117B (zh) | 内容记录装置、内容编辑装置、内容再生装置、内容记录方法、内容编辑方法、以及内容再生方法 | |
JP2009177655A (ja) | 記録装置及び記録方法 | |
JP3675437B2 (ja) | 情報記録再生処理装置、および方法、並びにコンピュータ・プログラム | |
US7502294B2 (en) | Information recording and playback apparatus, content management method, and content management program capable of preventing illegal copying of content | |
KR100611965B1 (ko) | 암호화된 오디오 데이터를 저장하는 기록 매체, 그 기록장치와 방법 및 그 재생 장치와 방법 | |
JPWO2005091150A1 (ja) | コンテンツ移動装置、コンテンツ移動方法、コンピュータプログラム、記録媒体及びコンテンツ移動システム | |
JP2009100265A (ja) | データ処理装置、データ処理方法、データ処理プログラム、およびそのデータ処理プログラムを記録した記録媒体、並びに集積回路 | |
US20080260157A1 (en) | Recording Apparatus and Recording Medium | |
JP4417272B2 (ja) | 記録装置、再生装置、記録方法、再生方法、および記録再生装置 | |
JP3735864B2 (ja) | 情報記録処理装置、情報再生処理装置、および方法、並びにコンピュータ・プログラム | |
JP2007294054A (ja) | デジタル画像記録再生装置 | |
JP4181108B2 (ja) | 記録再生装置 | |
JP2007509513A (ja) | 暗号化された補足データセットを復号化するための方法及び装置 | |
JP4633715B2 (ja) | 情報記録装置及び方法、情報再生装置及び方法、並びにコンピュータプログラム | |
JP2008065791A (ja) | 情報処理装置および方法、並びにプログラム | |
JP2002290905A (ja) | ディジタル放送受信装置及び情報記録再生装置 | |
JP5006434B2 (ja) | コンテンツ管理装置 | |
JP2010257519A (ja) | 記録装置及び記録方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 2006519411 Country of ref document: JP |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005720631 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 200580006542.9 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10593727 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWW | Wipo information: withdrawn in national office |
Country of ref document: DE |
|
WWP | Wipo information: published in national office |
Ref document number: 2005720631 Country of ref document: EP |