WO2001089210A1 - Appareil de reproduction/enregistrement - Google Patents
Appareil de reproduction/enregistrement Download PDFInfo
- Publication number
- WO2001089210A1 WO2001089210A1 PCT/JP2001/004156 JP0104156W WO0189210A1 WO 2001089210 A1 WO2001089210 A1 WO 2001089210A1 JP 0104156 W JP0104156 W JP 0104156W WO 0189210 A1 WO0189210 A1 WO 0189210A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- content
- recording
- storage medium
- data
- erasing
- Prior art date
Links
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- 230000006835 compression Effects 0.000 claims description 56
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Classifications
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00217—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
- G11B20/00253—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
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- 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
- G11B20/00666—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
- G11B15/02—Control of operating function, e.g. switching from recording to reproducing
- G11B15/023—Control of operating function, e.g. switching from recording to reproducing remotely controlled
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- 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
- G11B20/00007—Time or data compression or expansion
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
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- 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
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
- G11B20/00485—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
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- G—PHYSICS
- G11—INFORMATION STORAGE
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- 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
- G11B20/00731—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction
- G11B20/00746—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number
- G11B20/00753—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
- G11B20/00768—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving a digital rights management system for enforcing a usage restriction wherein the usage restriction can be expressed as a specific number wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags wherein copy control information is used, e.g. for indicating whether a content may be copied freely, no more, once, or never, by setting CGMS, SCMS, or CCI flags
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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- G11B20/10—Digital recording or reproducing
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- G—PHYSICS
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- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/008—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires
- G11B5/00813—Recording on, or reproducing or erasing from, magnetic tapes, sheets, e.g. cards, or wires magnetic tapes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
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- H04N5/91—Television signal processing therefor
- H04N5/913—Television signal processing therefor for scrambling ; for copy protection
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- G—PHYSICS
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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
- H04N2005/91307—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal
- H04N2005/91328—Television signal processing therefor for scrambling ; for copy protection by adding a copy protection signal to the video signal the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
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- 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
- H04N2005/91357—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal
- H04N2005/91364—Television signal processing therefor for scrambling ; for copy protection by modifying the video signal the video signal being scrambled
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
Definitions
- the present invention relates to reproduction of content recorded on a storage medium, and recording and erasing of content on the storage medium, and in particular, while erasing copy-protected content from the storage medium on which it is recorded. Playback recording to be moved to another storage medium
- a conventional reproduction recording apparatus for example, in the case of a duplication-prohibited content recorded analogly on a video cassette tape, even if the reproduction signal is recorded on another video cassette tape, the reproduction signal cannot be reproduced due to the effect of the analog protection system.
- the reproduced video is a video whose quality is degraded so that the viewer cannot view it normally, and as a result, illegal duplication is prevented. .
- FIG. 15 is a diagram showing a signal format for transmitting copy generation restriction information.
- the XDS signal This is the format of the extended data service (XDS) signal that is standardized in relation to the closed caption signal superimposed on the second line of the vertical blanking interval of the analog television signal. Is used to carry CGMS information.
- the XDS signal consists of a clock run-in period, a start bit, and a 16-bit digital signal.
- the digital signal is divided into two bytes, characters 1 and 2.
- the CGM information can be identified by the start bit, character 1, and / or character 2, and the 'recorder identifies and duplicates the CGM information on the second line. Generations are restricted.
- the conventional playback / recording apparatus performs copying of content when the content is not copy-protected, and only plays the content that is copy-protected.
- the copy generation is restricted based on the generation restriction information.
- the present invention has been made in view of such circumstances, and when content recorded on a storage medium is copy-prohibited content, the content is erased from the original storage medium and moved to another storage medium. It is another object of the present invention to provide a playback / recording apparatus for moving contents. Disclosure of discovery
- a reproduction / recording apparatus is a reproduction / recording apparatus for moving content recorded on an erasable storage medium, wherein the content is recorded on the first storage medium.
- Reproducing means for reproducing and outputting the content; detecting means for detecting copyright information of the content; erasing means for erasing the content on the first storage medium; and recording the content on the second storage medium
- recording means for reproducing the content when the content is moved, and when the content is prohibited from being copied by the output of the detecting means, the erasing means.
- the recording means includes copyright information indicating copy prohibition and is in a copy prohibited state.
- the copyright information of the content recorded on the storage medium is prohibited from being copied.
- the storage medium is an erasable medium
- the content subjected to the copy prohibition measure is erased from the storage medium, and at the same time, copyright information indicating the copy prohibition is included, and the copy prohibition measure is
- the content can be recorded on another storage medium in the state where the content has been applied, and the content can be moved while the same content does not exist at the same time.
- a playback / recording apparatus is a playback / recording apparatus for moving content recorded on an erasable storage medium, wherein the first storage is Reproducing means for reproducing and outputting the content recorded on the medium; detecting means for detecting the copyright information of the content; erasing means for erasing the content in the first storage medium; and an output of the reproducing means.
- Encryption means for encrypting and outputting the encrypted data, temporary storage means for temporarily storing the encrypted data, decryption means for decrypting the encrypted data, and the content in a second storage medium.
- the content is moved by recording, in a second storage medium, the copy-protected content including the copyright information indicating that the copy is prohibited.
- the copyright information of the content recorded on the storage medium is copy-protected
- the storage medium is an erasable medium
- the copy-protected content is deleted from the storage medium.
- the content is temporarily stored, and then it can be recorded on another storage medium with the copyright protection information indicating that the duplication is prohibited. While moving the content.
- the playback / recording apparatus is characterized in that the erasable storage medium is A reproduction / recording apparatus for moving content recorded on the body between the apparatuses;
- the reproduction / recording apparatus includes: a reproduction / erasing apparatus as a first apparatus; a recording apparatus as a second apparatus;
- the first device performs mutual authentication and moves contents including movement information indicating movement of contents between the first device and the second device.
- the moving information is detected, and based on the moving information, the recording unit includes the copy-protected content including copyright information indicating copy prohibition. By recording the second storage medium, and performs transfer of the contents.
- the copyright information of the content recorded on the storage medium is copy-protected
- the storage medium is an erasable medium
- the copy-protected content is deleted from the storage medium.
- the mobile information is assigned to the empty bits of the CGMS information and the analog information is transmitted between the devices, and the content includes another piece of copyright information including the copyright information indicating the duplication prohibition, and is subjected to another anti-duplication measure.
- the content can be recorded on a storage medium, and the content can be moved while the same thing does not exist at the same time.
- the reproduction and recording device according to claim 4 of the present invention is the reproduction and recording device according to claim 3, wherein information such as movement information indicating movement of the content. Exist during the vertical blanking period of the video signal.
- the content can be provided with movement information, and the content can be transmitted in an analog manner between the devices that have performed mutual authentication.
- the second storage medium is a video cassette tape, and An analog protection signal is superimposed and recorded.
- a playback / recording apparatus is a playback / recording apparatus for moving contents recorded on an erasable storage medium between apparatuses, Comprises a reproducing / erasing device which is a first device, a recording device which is a second device, and a transmission line such as a transmission cable connecting these devices, and the first device comprises the second device A first authentication unit that performs mutual authentication and content transfer between the first storage medium and a reproduction unit that reproduces and outputs the content recorded on the first storage medium; and a detection unit that detects copyright information of the content.
- the second device comprises: Mutual authentication and content with one device A second authentication unit for performing movement, a decryption unit for decrypting the encrypted data, and a recording unit for recording the content in a second storage medium, wherein the content is moved.
- the encryption means Encrypts and outputs the data of the content by the encryption means, erases the content from the first storage medium by the erasing means, decrypts and outputs the encrypted data by the decrypting means, and By recording the content in a copy-prohibited state on a second storage medium, the recording medium includes copyright information indicating that duplication is prohibited, and Is what you do.
- the copyright information of the content recorded on the storage medium is prohibited from being copied.
- the storage medium is an erasable medium
- the content for which duplication prohibition measures have been taken is erased from the storage medium, and the content is encrypted and digitally exchanged between devices that have performed mutual authentication with the movement information. After transmission and decryption, it contains the copyright blueprint indicating that duplication is prohibited, and can be recorded on another storage medium with duplication prohibition measures taken, so that the same thing does not exist at the same time. It is possible to move the contents while moving.
- a reproduction and recording apparatus is a reproduction and recording apparatus for moving contents recorded on an erasable storage medium between the apparatuses, wherein the reproduction and recording apparatus Comprises a reproduction / erase device which is a first device and a recording device which is a second device: a transmission path such as a transmission cable connecting these devices; and wherein the first device is provided with the second device
- a first authentication unit that performs mutual authentication and moves contents including movement information indicating movement of contents, and a reproducing unit that reproduces and outputs content recorded in a first storage medium
- Detecting means for detecting copyright information of the content; erasing means for erasing the content in the first storage medium; compressing means for compressing and outputting the image data of the content; Encrypt the output
- a second authentication unit for performing mutual authentication and moving the content including the movement information and the like between the first device and the second device.
- Decoding means for decoding the encrypted data, decompression means for decompressing the compressed data, and recording means for recording the content on a second storage medium When the content is moved, mutual authentication is performed between the first authentication means and the second authentication means, the content is reproduced and output by the reproduction means, and the content is duplicated by the output of the detection means. In the case of prohibition, the image data of the content is compressed by the compression means, and the copyright information and the additional information of the movement information are inserted and output in an area secured by the compression.
- Decrypting means for decrypting the encrypted data and outputting the data
- decompressing means for decompressing the compressed data to output the image data
- the recording means including copyright information indicating that duplication is prohibited
- the movement of the content is performed by recording the prohibited content on a second storage medium.
- the copyright information of the content recorded on the storage medium is copy-protected
- the storage medium is an erasable medium
- the copy-protected content is deleted from the storage medium.
- the uncompressed digital image data included in the content is compressed and then encrypted so that additional information including the movement information of the content can be added, and digitally transmitted between the devices that have performed mutual authentication.
- It contains copyright information indicating the above-mentioned duplication prohibition, and can be recorded on another storage medium in a state where duplication prohibition measures have been taken, and the content can be moved while the same one does not exist at the same time. it can.
- the reproduction and recording device is the reproduction and recording device according to claim 7, wherein the compression unit includes: a total number of unused generated values smaller than a generated value G.
- This is a value generated by arranging a plurality of data values and providing a digit in data having a small amount of data, that is, a value that is not used as a data value, and the unused generated value includes the unused data value.
- Is a value generated by arranging a plurality of data values to have digits, and the plurality of data values are obtained by adding zeros and aligning the digits until the number of digits of the maximum data value is reached. That.
- the decompressing means is configured to generate an unused generation value smaller than a generation value G.
- Means for decompressing compressed data by calculating the total number T of the data and adding the generated data to the generated value G, wherein the generated value G is the total number of values used as data values in the content. If the number of bits per value is less than the total number of values, or data that has values that are not used as data values,
- the unused generated values include data values that are not used, and are generated by arranging a plurality of data values to have a digit. The data values of are obtained by adding zeros and aligning the digits until the number of digits of the maximum data value is reached.
- the compressed digital data can be expanded and returned to the original digital data.
- the playback / erasing device described in claim 1.0 of the present invention is a playback / erasing device for moving content recorded on an erasable storage medium between the first device and the second device.
- a playback / erase device which is a first device and constitutes a raw recording device, comprising: a first authentication unit for performing mutual authentication and content transfer with the second device; Reproducing means for reproducing and outputting the content recorded on the storage medium; detecting means for detecting copyright information of the content; and erasing means for erasing the content on the first storage medium.
- the erasing means Ri is intended to erase the Konten' from the first storage medium.
- the storage medium is an erasable medium
- the content is erased from the storage medium, and the mutual authentication is transmitted to the external device with one fi Content can be moved while the same thing does not exist at the same time.
- the playback / erasing apparatus is a playback / erasing apparatus for moving content recorded on an erasable storage medium between the first apparatus and the second apparatus.
- a playback / erasing device which is a first device and constitutes a device, wherein the first device performs mutual authentication and moves contents including movement information indicating movement of contents between the second device and the second device.
- an analog protection system APS for incorporating analog protection and the movement information and the like into the output of the playback means.
- the authentication means and the second device perform mutual authentication, and the reproduction means reproduces and outputs the content. If the content is prohibited from being copied by the output of the detection means, the APS controls the reproduction means.
- the output incorporates analog protection, the movement information, and the like into the output, and the erasing means erases the content from the first storage medium.
- the content recorded on the storage medium is copy-protected
- the storage medium is an erasable medium
- the content is erased from the storage medium, and the movement information is stored in an empty bit of the CGMS information.
- An APS can be implemented in the assigned content, and the analog content can be transmitted to an external device that has performed mutual authentication. The content can be moved while the same content does not exist at the same time.
- the playback erasing device is the playback erasing device that is the first device according to claim 11, wherein movement information indicating movement of the content and the like are provided. This information exists during the vertical blanking period of the video signal.
- the content can be provided with the movement information, and the content can be transmitted in an analog manner to the external device that has performed the mutual authentication.
- the playback / erasing apparatus is a playback / erasing apparatus for moving content recorded on an erasable storage medium between the first apparatus and the second apparatus.
- a playback / erase device which is a first device, which constitutes a device, comprising: first authentication means for performing mutual authentication and content transfer with the second device; and a first storage device.
- Reproducing means for generating and outputting the content recorded on the medium; detecting means for detecting copyright information of the content; erasing means for erasing the content in the first storage medium; Encryption means for encrypting and outputting the output, wherein when the content is moved, mutual authentication is performed between the first authentication means and the second device, and the content is transmitted by the reproduction means. Is reproduced and output, and is output to the output of the detection means. Ri If the content is duplication inhibition, the encryption means by outputting encrypted data of the Konten' is intended to erase the content from the first storage medium body by said erasing means.
- the storage medium is an erasable medium
- the contents can be erased from the storage medium, the contents can be encrypted, and digitally transmitted to the external device that has performed mutual authentication together with the movement information. Content can be moved while there is no.
- the playback / erasing device is a playback / erasing device for moving content recorded on an erasable storage medium between the first device and the second device.
- a playback / erasing device which is a first device and constitutes a device, wherein the first device performs mutual authentication and moves contents including movement information indicating movement of contents between the second device and the second device.
- compression means for compressing and outputting the content image data, and encryption means for encrypting and outputting the output of the reproduction means.
- Authentication means and the second device Mutual authentication is performed between devices, and the content is reproduced and output by the reproducing means. If the content is prohibited from being copied by the output of the detecting means, the image data of the content is compressed by the compressing means. At the same time, the copyright information and the additional information of the movement information are inserted and output in the area secured by compression, the content data is encrypted by the encryption means and output, and the first data is erased by the erasure means. In which the content is erased from the storage medium.
- the reproduction and erasure device according to claim 15 of the present invention is the reproduction and erasure device that is the first device according to claim 14, wherein the compression means includes: Means for compressing data by reducing the total number of unused generated values T that is less than the total number of values used as data values in the content.
- Forced data is generated by arranging multiple data values and giving digits to data that is smaller than the total number of values expressed in bits per data value, that is, data that has values that are not used as data values.
- the unused generated value includes the unused data value, is a value generated by arranging a plurality of data values to have a digit, and the plurality of data values is a maximum data value. Until the number of digits is reached, zero is added and the number of digits is made uniform.
- a region for inserting additional information including content movement information into the content can be secured, and the content can be transmitted without increasing the transmission rate when the content is moved.
- the recording device is a reproduction recording device for moving contents recorded on an erasable storage medium between the first device and the second device.
- a recording device which is a second device, comprising: a second authentication unit that performs mutual authentication and content movement including movement information indicating content movement with the first device.
- the copy-protected content transmitted from the external device that has performed the mutual authentication is recorded on another storage medium in a state where the copy-protection measures are taken, including the copyright information indicating the copy prohibition.
- the content can be moved while the same thing does not exist at the same time.
- the recording device according to claim 17 of the present invention is the recording device as the second device according to claim 16, wherein the second storage medium is a video cassette tape. Then, an analog protection signal is superimposed on the content and recorded.
- the recording device is characterized in that: A recording device constituting a re-recording device for moving content recorded on the first device between the first device and the second device, wherein the recording device is a second device.
- a second authentication unit that performs mutual authentication and content transfer, a decryption unit that decrypts encrypted data, and a recording unit that records the content in a second storage medium.
- mutual authentication is performed between the second authentication unit and the first device, the encrypted data is decrypted by the decrypting unit and output, and the recording unit indicates the copy prohibition by the recording unit.
- the content including the right information and being in the copy-prohibited state is recorded on the second storage medium.
- the external device after decrypting the encrypted content transmitted from the external device that has performed the cross-authentication, it includes the copyright information indicating that the duplication is prohibited, and separates it in a state where the duplication prohibition measures have been taken.
- Content can be recorded on the same storage medium, and the content can be moved while the same content does not exist at the same time.
- the recording device is a reproduction recording device for moving content recorded on an erasable storage medium between the first device and the second device.
- a recording device which is a second device, comprising: a second authentication unit that performs mutual authentication and content movement including movement information indicating content movement with the first device. And decompressing means for decompressing the compressed data; and recording means for recording the content in a second storage medium, wherein when the content is moved, the second authentication means and the first device are used.
- the second authentication means detects additional information including the movement information and the like
- the decryption means decrypts and outputs the encrypted data
- the pre-decompression means decompresses the compressed data.
- said recording means includes copyright information indicating copy inhibition and records the content that is the copy inhibition state to the second storage medium.
- the external device After decrypting and decompressing the compressed and encrypted content transmitted from the external device that has performed the mutual authentication, it includes the copyright information indicating that the duplication is prohibited, and performs another anti-duplication while taking measures against the duplication.
- the content can be recorded on a storage medium, and the content can be moved while the same content does not exist at the same time.
- the recording device is the recording device according to claim 19, wherein the decompression means is more than a generated value G.
- a means for decompressing a compressed data by calculating the total number T of unused generated values and adding the generated value G to the generated value G.
- the generated value G is used as a data value of the content II. Data values where the total number of values is less than the total number of values represented by the number of bits per data value, that is, data that has values that are not used as data values.
- the unused generated value includes the unused data value, and is a value generated by arranging a plurality of data values to have digits, and the plurality of data values is the maximum number of digits of the data value. The number of digits is added and the number of digits is aligned until the number of digits is reached.
- the compressed digital data can be expanded and returned to the original digital data.
- the playback / recording apparatus according to claim 21 of the present invention is the playback / recording apparatus according to claim 6 or claim 7, wherein the temporary storage for temporarily storing the content is performed.
- a temporary storage means for temporarily storing the content is performed.
- a reproduction and erasing device is a reproduction and erasing device that is the first device according to claim 13 or claim 14;
- the information processing apparatus further includes a temporary storage unit that temporarily stores the content, and the temporary storage unit temporarily stores the content.
- the recording device according to claim 23 of the present invention is the recording device according to claim 18 or the second device according to claim 19, wherein: Temporary storage means for temporarily storing the content.
- the temporary storage means temporarily stores the content.
- the reproduction and recording apparatus is the reproduction and recording apparatus according to claim 1 or claim 2, wherein the recording is performed on a second storage medium.
- the control means controls the reproduction means or the erasure means, the second reproduction means, the second reproduction means, based on movement information including information obtained by collating a recording signal to the second storage medium with a reproduction signal from the second storage medium.
- the erasing means is controlled to include the copyright information indicating that copying is prohibited, and to move the content in a copying prohibited state.
- the data recorded on another storage medium can be reproduced, the content recording process can be controlled by comparing the E-recorded symbol and the reproduced signal, and normal content movement can be performed. .
- the playback / recording apparatus is directed to a playback / recording apparatus according to any one of claims 3, 6, and 7.
- a second playback unit that plays back the content recorded on the second storage medium; a first control unit that controls the playback unit and the erasing unit; a second playback unit and the recording And second control means for controlling the means, and based on movement information including information obtained by collating a recording signal to the second storage medium and a reproduction signal from the second storage medium, and the like,
- the first control means or the second control means controls the reproducing means or the erasing means, the second reproducing means, and the erasing means, and includes copyright information indicating that duplication is prohibited, and enters a duplication prohibited state.
- the content is moved.
- the reproduction / erasing device according to claim 26 of the present invention is characterized in that the reproduction erasing device according to claim 10, claim 11,. 5.
- the recording device according to claim 27 of the present invention, the recording device according to claim 16, A second device for reproducing content recorded on a second storage medium in the recording device as the second device according to any one of claims 18 and 19.
- the second control means controls the second playback means and the storage means based on movement information including information and the like, and includes copyright information indicating that copying is prohibited, and is in a copy prohibited state. This is for moving content.
- the playback / recording device according to claim 28 of the present invention is the playback / recording device according to any one of claims 3, 6, or 7.
- the mutual authentication by the first authentication means or the second authentication means is also performed during the movement of the content, and the movement of the content is continued when the mutual authentication is established.
- the content can be moved between the devices that have performed the mutual authentication only when the movement of the moving content is permitted.
- the reproduction / erasing apparatus according to claim 29 of the present invention is characterized in that the reproduction erasing apparatus according to claim 10, claim 11, claim 13, or claim 14.
- the mutual authentication by the first authentication means is performed even during the movement of the content, and the mutual authentication is established. Then, the movement of the content is continued.
- the content can be transmitted to the external device that has performed the mutual authentication only when the movement of the moving content is permitted.
- the recording apparatus according to claim 30 of the present invention is a recording apparatus according to claim 16, claim 18, or claim 19.
- the mutual authentication by the second authentication unit is performed even during the movement of the content, and the movement of the content is continued when the mutual authentication is established.
- the moving content transmitted from the external device that has performed the mutual authentication can be recorded only when the movement is permitted.
- the content is divided, and the movement of the content is performed in units of division. Things.
- the playback / erasing device according to claim 32 of the present invention is the playback / erasing device which is the first device according to claim 26, wherein the content is classified, Is performed in unit of section.
- the content can be transmitted to each external device that has performed the mutual authentication in units of division.
- the recording device according to claim 33 of the present invention is the recording device that is the second device according to claim 27, wherein the content is divided and the content is moved. Is performed on a segment basis.
- the content transmitted from the external device that has performed the mutual authentication can be recorded in another storage medium in each division unit.
- the reproduction / recording apparatus in the reproduction / recording apparatus according to claim 34 of the present invention, in the reproduction / recording apparatus according to claim 31, when the content is moved, the content is transferred to a second storage medium.
- the recording position of the content and the erasing position of the frame on the first storage medium are the same.
- the playback / erasing apparatus according to claim 35 of the present invention is the playback / erasing apparatus which is the first apparatus according to claim 32, wherein when the content is moved, The erasure position of the content on the first storage medium and the recording position of the content on the second storage medium of the external device are the same.
- the movement information or the copyright A non-volatile memory that records and retains information related to content movement such as rights information. If the movement information exists in the non-volatile memory, the movement processing is continued, and when the movement is completed, the information is stored. In the case where the erasing operation is interrupted due to the power of the playback / recording device being turned off or the like, the movement is resumed by reading the movement information in the memory.
- the movement information can be obtained from the nonvolatile memory, and the movement of the content can be resumed or continued.
- the playback recording device is the playback recording device according to claim 25, wherein when the content is moved, the movement information or A non-volatile memory that records and retains information relating to content movement such as copyright information and information indicating a classification of content; and when the movement information exists in the non-volatile memory, continues the movement processing.
- the movement is completed, the information is erased, and when the movement processing of the content is interrupted due to the power-off of the reproduction / recording device or the like, the movement is resumed by reading the movement information in the memory.
- the movement information can be obtained from the nonvolatile memory, and the movement of the contents can be resumed or continued.
- the reproduction and erasing device is the reproduction and erasing device as the first device according to claim 26, wherein the movement of the content is If performed, a non-volatile memory is provided for recording and holding information relating to content movement, such as the movement information or copyright information, and f-information indicating a classification of content, and the movement information is present in the non-volatile memory.
- the moving process is continued, and when the moving is completed, the information is erased, and when the moving process of the content is interrupted due to power-off of the first device or the like, the moving information in the memory is read. Then, the movement is restarted. '
- the movement information can be obtained from the non-volatile memory, and the transmission of the content can be resumed or continued. it can.
- the playback / recording device according to claim 40 of the present invention is the playback / recording device according to claim 1 or claim 2, wherein content is transferred to the playback / recording device. And moving the content in accordance with the movement instruction means.
- the playback / recording apparatus is the playback / recording apparatus according to any one of claim 3, claim 6, or claim 7.
- a movement instructing means for sending an instruction to move the content to the first device, wherein the content is moved according to the instruction of the movement instructing means.
- the reproducing / erasing apparatus according to claim 42 of the present invention is characterized in that the reproducing / erasing apparatus according to claim 10, claim 11, claim 13, or claim 14.
- an instruction to move the content can be sent to the first device.
- the playback / recording apparatus according to claim 43 of the present invention is the playback / recording apparatus according to claim 1 or claim 2, wherein whether or not the content is moving.
- a moving display means for displaying, the moving display means When the content is being moved, the fact that the content is being moved is displayed and clearly indicated outside the device.
- the playback / recording device is the playback / recording device according to any one of claim 3, claim 6, or claim 7.
- the first device further comprising: movement display means for displaying whether the content is moving, wherein the movement display means displays that the content is being moved when the content is being moved. This is specified outside the device.
- the reproduction / erasing apparatus according to claim 45 of the present invention is characterized in that the reproduction erasing apparatus according to claim 10, claim 11, claim 13, or claim 14.
- the storage medium or the removable storage medium according to claim 46 of the present invention has information indicating permission / prohibition of movement, and the claims 1 to 45.
- the content is moved by the reproduction / recording device according to any one of the above, the reproduction / erasing device as the first device, or the recording device as the second device.
- content movement can be controlled by detecting information indicating whether the movement of the content is permitted or not, or information indicating whether the movement is permitted due to a difference in the type of the storage medium between the source and the destination or a difference in the storage mode. .
- the reproduction and erasing device which is the first device in the reproduction and recording device according to claim 47 of the present invention, stores data by reducing the total number T of unused generation values smaller than the generation value G.
- the generated value G is expressed by the number of bits per data value as the total number of values used as data values in the content.
- Data values that are less than the total number of values that are not used as data values, that is, values that are generated by arranging a plurality of data values and providing digits, and the unused generated values are the unused data.
- additional information such as the copyright information and the movement information, a data area is secured by data compression of the compression unit.
- the recording device which is the second device in the reproduction / recording device according to claim 48 of the present invention, calculates a total number T of the unused generation values smaller than a generation value G, and generates a generation value G Decompressing means for decompressing the compressed data by adding the data to the data.
- the generated value G represents the total number of values used as data values in the content by the number of bits per data value.
- the compressed data is expanded by the expansion means.
- the compressed digital data can be decompressed and returned to the original digital data.
- the reproduction recording device is the reproduction recording device according to claim 31, wherein the content is divided into the first storage medium and a video cassette. In the case of a tape, the time is periodically counted by the reproduction / recording device. This is done in a single byte of the content.
- the playback erasing device is the playback erasing device that is the first device according to claim 32, wherein the classification of the content is:
- the first storage medium is a video cassette tape
- the time is periodically counted by the reproduction / erasing device.
- the first storage medium is a magnetic disk, an optical disk, a magneto-optical disk, or the like
- the time is counted. This is performed for each byte of the content stored in the first storage medium.
- the content can be divided into units, and the contents can be transmitted to the external device that has performed the mutual authentication in the unit of division.
- the recording device is the recording device which is the second device according to claim 33, wherein the content division is the second storage.
- the medium is a video cassette tape
- the time is periodically counted by the recording device
- the first storage medium is a magnetic disk, an optical disk, a magneto-optical disk, or the like
- the first storage medium is used. This is done on a byte-by-byte basis for the stored content.
- the content can be divided into units, and the content can be recorded in another storage medium in units of division from the external device that has performed the mutual authentication.
- FIG. 1 is a configuration diagram of a reproduction / recording apparatus according to Embodiment 1 of the present invention.
- FIG. 2 is a configuration diagram of a reproduction / recording apparatus according to Embodiment 2 of the present invention.
- FIG. 3 is a configuration diagram of a reproduction / recording apparatus according to Embodiment 3 of the present invention.
- FIG. 4 is a configuration diagram of an APS in the reproduction / recording apparatus according to the third embodiment of the present invention.
- FIG. 5 is a waveform chart showing CGMS information according to Embodiment 3 of the present invention.
- FIG. 6 is a configuration diagram of a reproduction / recording apparatus according to Embodiment 4 of the present invention.
- FIG. 7 is a configuration diagram of an MPEG encoding unit in the reproduction / recording apparatus according to Embodiment 4 of the present invention.
- FIG. 8 is a configuration diagram of a reproduction / recording apparatus according to Embodiment 5 of the present invention.
- FIG. 9 is a formula for calculating data compression according to the fifth embodiment of the present invention.
- FIG. 10 is a configuration diagram of a compression unit in a reproduction / recording apparatus according to Embodiment 5 of the present invention.
- FIG. 11 is a calculation formula of data decompression according to the fifth embodiment of the present invention.
- FIG. 12 is a configuration diagram of a decompression unit in the reproduction / recording device according to the fifth embodiment of the present invention.
- FIG. 13 is a configuration diagram of a reproduction recording apparatus according to Embodiment 6 of the present invention.
- FIG. 14 is a configuration diagram of a reproduction / recording apparatus according to Embodiment 7 of the present invention.
- 15th @ is a diagram showing a conventional signal format for transmitting copy generation restriction information.
- FIG. 1 is a configuration diagram of a playback / recording apparatus according to the first embodiment.
- a playback / recording apparatus 8 includes an erasable video cassette tape 2 on which contents are recorded and a movement of the contents. It consists of the video cassette tape 7, playback unit 3, copyright information detection unit 4, erasure unit 5, and recording unit 6 that can be erased when the content is instructed by the remote control 1 that is the movement instruction means. Transfer the content recorded on video cassette tape 2 to another video power set tape 7! I'll let you do it.
- the reproducing unit 3 reproduces the content recorded on the video cassette tape 2 and outputs an audio signal and a video signal.
- the copyright information detecting section 4 detects copyright information of the content.
- the recording unit 6 superimposes a signal on the video signal reproduced by the reproduction unit 3 and then converts the video signal into an audio signal. It is recorded on the video force set tape 7 together with the signal.
- the erasing unit 5 erases the content reproduced by the reproducing unit 3. is there.
- the playback unit 3 plays back the content recorded on the erasable video cassette tape 2, and outputs the audio signal and the video signal to the copyright information detection unit Output to 4.
- the copyright information detection unit 4. detects whether analog protection is applied to the video signal input from the reproduction unit 3. In this detection, the vertical blanking period of the video signal is observed, and if there is a pseudo sync pulse that causes the AGC of the recording unit 6 to malfunction, it is determined that duplication is prohibited.
- the recording unit 6 detects that the copying is prohibited by the output from the copyright information detecting unit 4, and the reproducing unit 3
- the analog protection signal detected by the copyright information detector 4 superimposed on the video signal output from the AGC, and the setting has been changed to the AGC time constant that is not affected by the analog protection signal to prevent duplication. It is recorded on the video cassette tape 7 together with the audio signal.
- the signal reproduced by the live section 3 is immediately deleted from the video cassette tape 2.
- the reproduction / recording apparatus when the copyright information of the content analogly recorded on the erasable video cassette tape 2 is prohibited from being copied, the reproduction is prohibited.
- the copy-protected content including the copyright information from the video cassette tape 2 and recording it on another video cassette tape 7 make sure that the same content does not exist at the same time.
- the copy-protected content recorded analogously on the video cassette tape 2 can be moved to another video cassette tape 7.
- Embodiment 2 ⁇
- Embodiment 2 of the present invention will be described.
- FIG. 2 is a configuration diagram of a playback / recording apparatus according to the second embodiment.
- the playback / recording apparatus 8 includes an erasable video cassette in which contents are recorded.
- the digital signal reproducing section 9 reproduces the MPEG stream digitally recorded on the erasable video cassette tape 2.
- the encryption unit 10 encrypts the MPEG stream reproduced by the digital signal reproduction unit 9 and outputs the encrypted MPEG stream.
- the HDD 11 temporarily stores the MPEG stream encrypted by the encryption unit 10.
- the decryption unit 12 decrypts the encrypted MPEG stream from the HDD 11 and outputs it. At this time, the HDD 11 outputs the MPEG stream to the decryption unit 12 and erases the data at the same time.
- the digital signal recording section 13 digitally records the MPEG stream output from the decoding section 12 on a video cassette tape.
- the digital signal playback unit 9 plays back the MPEG stream digitally recorded on the erasable video cassette tape 2 and sends it to the copyright information detection unit 4. Output.
- the copyright information detecting unit 4 detects the copyright information of the MPEG stream output from the digital signal reproducing unit 9 and determines whether or not the content is prohibited from being copied.
- the MPEG stream reproduced by the digital signal reproduction unit 9 is encrypted by the encryption unit 10 and the HDD Stored temporarily in 11. Further, the erasing section 5 immediately erases the MPEG stream reproduced by the digital signal reproducing section 9 from the video tape 2. After the signal is erased, the video cassette tape 2 is removed from the playback / recording device 8, and a new video cassette tape 7 is inserted into the playback / recording device 8 (in FIG. 2, the force tapes 2 and 7 are for convenience of explanation).
- HDD 11 reads out the temporarily stored MPEG stream and outputs it to decryption unit 12. At this time, the HDD 11 outputs the encrypted MPEG stream and simultaneously deletes the data.
- the encrypted MPG stream output from the HDD 11 is decrypted by the decryption unit 12 and then digitally recorded on the video cassette tape 7 by the digital signal recording unit 13.
- the reproduction / recording apparatus when the copyright information of the content digitally recorded on the erasable video cassette tape 2 is prohibited from being copied, the reproduction is prohibited.
- the reproduction By erasing the content that includes copyright information and is prohibited from being copied from the video recording tape 2 and recording it on another video cassette tape 7, it is possible to eliminate the same content at the same time, The copy-protected content digitally recorded on the video cassette tape 2 can be moved to another video cassette tape 7.
- FIGS. FIG. 3 and FIG. 4 are configuration diagrams of the reproduction / recording apparatus according to the third embodiment.
- the reproduction / recording apparatus is a first apparatus which receives a content movement instruction by a remote control 1 which is movement instruction means.
- the first device 8a comprises a playback / erasing device 8a, a recording device 8 as a second device, and a transmission cable 18 connecting these devices.
- a cassette tape 2 a copyright information detecting section 4, an erasing section 5, a digital signal reproducing section 9, an APS (analog retention system) 14, and a first authenticating section 15;
- the device 8b includes a recording unit 6, a video cassette tape 7 to which the content is moved, and a second authentication unit 16.
- the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted.
- APS 14 consists of an MPEG decoder 14a and an NTSC encoder 14b.
- the MPEG stream output from the digital signal reproducing unit 9 is MPEG-decoded by the decoder 14a, and the NTSC encoder 14b generates and outputs an audio signal and an NTSC video signal. is there
- the transmission cable 18 is a cable for transmitting an analog audio signal and an analog video signal.
- the first authentication unit 15 and the second authentication unit 16 perform mutual authentication by transmitting identification information via the transmission cable 18. This mutual authentication is performed using the existing two-way communication method using the vertical blanking period of the video signal, and the codes created by the first authentication unit 5 and the second authentication unit 16 are authenticated by the other party. This is performed by receiving a reply code after transmission to the unit, and recognizing that the other device is a device capable of moving content if the reply code is equal to the predicted code. The first authentication unit 15 and the second authentication unit 16 also transmit and receive the moving content.
- the digital signal reproducing section 9 reproduces the MPG stream digitally recorded on the video cassette tape 2 and outputs it to the copyright information detecting section 4.
- the copyright information detecting unit 4 detects the copyright information of the MPEG stream output from the digital signal reproducing unit 9 and determines whether or not the content is prohibited from being copied.
- the MPEG stream reproduced by the digital signal reproduction unit 9 is input to the APS 14, and the MPEG decoder 14a outputs the MPEG stream.
- the signal is decoded and converted into an audio signal and an NTSC video signal by the NTSC encoder 14b.
- the NTS C encoder 14b applies an analog protection signal to the video signal and, as shown in Figs. 5 (a) and 5 (b), transfers the copy's' generation 'management' system (CGMS) information to the video signal. It is superimposed on the 20th line of the signal and output.
- CGMS copy's' generation 'management' system
- FIG. 5 is a waveform diagram showing CGMS information in the third embodiment.
- the CG MS information shown in FIG. 5 (b) is superimposed on the twentieth line of the video signal as shown in FIG. 5 (a).
- Movement information is newly defined in bits 12 and 13 of the CGMS information, and information indicating whether or not the contents can be moved is assigned to bits 12 and 13. Information is assigned.
- the erasing unit 5 erases the MPEG stream reproduced by the digital signal reproducing unit 9 from the video cassette tape 2 at the same time as the reproduction.
- the video signal and the audio signal created by the AP-S 14 are sent from the first authentication unit 15 to the second device 8 b via the transmission cable 18.
- the second authentication unit 16 detects the CGMS information superimposed on the video signal, and the permission to move bit 12 of the CGMS information is “1”, that is, permission, and the movement information of bits 13 Is "1", that is, when moving, it is stored in the video cassette tape 7 in the recording unit 6 in the same manner as in the first embodiment.
- the recording unit 6 records the bit 13 to “0”, that is, the CGMS information in which the movement information is only reproduced, on the video cassette tape 7 together with the video signal and the audio signal.
- the reproduction / recording apparatus As described above, in the reproduction / recording apparatus according to the third embodiment, if the copyright information of the content digitally recorded on the erasable video cassette tape 2 is prohibited from being copied, the reproduction is prohibited. Content containing copyright information and in a copy-prohibited state is erased from the video cassette tape 2, converted to an analog signal and transmitted using movement information, etc., and recorded on another video cassette tape 7. By doing so, the copy prohibition content digitally recorded on the video cassette tape 2 can be moved to another video cassette tape 7 by an analog signal while the same one does not exist at the same time.
- the provision of the authentication unit eliminates the need for a single playback / recording device, and makes it possible to move the content recorded on the storage medium between the devices.
- the movement of digitally recorded content has been described.
- the digital signal reproducing unit 9 is replaced with the reproducing unit 3 and the APS 14 is removed (shown in the figure). The content can be moved.
- FIG. 6 and FIG. 7 are configuration diagrams of a playback / recording apparatus according to the fourth embodiment.
- the playback / recording apparatus is a playback apparatus which is a first apparatus for receiving a content moving instruction by a remote controller 1.
- the first device 8a comprises an erasing device 8a, a recording device 8b as a second device, and a transmission cable 22 connecting the erasing device 8a and the erasable video cassette tape on which the content is recorded.
- the device 8b includes a second authentication unit 21, a decryption unit 12, a digital signal recording unit 13, and a video cassette tape 7 to which the content is moved. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof will be omitted below.
- the MPEG encoding unit 19 is composed of an NTS C decoder 19'a, an MPEG CODEC 19b and an HDD 11, and converts the audio signal and the video signal output from the playback unit 3 by the NTS C decoder 19a. After the digital data has been converted, the MPEG code is compressed by MPEG CODE CI 9b and then temporarily stored in the HDD 11 for efficient movement.
- the encryption unit 10 encrypts the MPEG-compressed data output from the HDD 11 and outputs the encrypted data to the transmission cable 22 together with the encryption key. Also, the HDD 11 outputs the stored MPEG stream at the same time as the output and deletes the stream.
- the transmission cable 22 is a digital signal cable for transmitting digital data.
- the first authentication unit 20 and the second authentication unit 21 are mutually authenticated via the transmission cable 22.
- the certificate is verified, and the content is moved when the authentication is established. This mutual verification is performed in the same manner as that described in the third embodiment.
- the first authentication unit 20 and the second authentication unit 21 perform mutual authentication via the transmission cable 22. This mutual authentication is the same as that described in the third embodiment. When the authentication is established, the content is moved.
- the playback unit 3 plays back the content recorded on the erasable video cassette tape 2 and outputs it to the copyright information detection unit 4.
- the copyright information detection unit 4 determines whether or not the content is copy-prohibited, as in the first embodiment.
- the copyright information detecting unit 4 detects that the content of the video cassette tape 2 is prohibited from being copied, the video and the audio signal reproduced by the reproducing unit 3 are output to the MPEG encoding unit 19.
- the data After being converted into digital data by the NTSC decoding 19a in the MPEG encoder 19, the data is compressed by the MPEG C ⁇ DEC 19b into the MPEG, and the HDD 1 is used for continuous efficient movement. Stored temporarily in 1.
- the MPEG-compressed data is encrypted by the encryption unit 10 and output together with the encryption key.
- the HDD 11 outputs the temporarily stored MPEG compressed data and simultaneously deletes the data.
- the erasing unit 5 erases the signal reproduced by the reproducing unit 3 from the video cassette tape 2 at the same time when the signal is reproduced.
- the encrypted compressed data output from the encryption unit 10 and the encryption key for decrypting it are transmitted from the first authentication unit 2 via the transmission cable 22 to the second authentication unit 21. Digitally transmitted.
- the decryption unit 12 decrypts the encrypted data based on the encryption key, and outputs the decrypted data to the digital signal recording unit 13.
- the encryption by the encryption unit 10 and the decryption by the decryption unit 12 are performed using the existing method.
- the MPEG stream input to the digital signal recording unit 13 is digitally recorded on the video cassette tape 7 as in the second embodiment.
- the mutual authentication by the first authentication unit 20 and the second authentication unit 21 is also performed during the movement of the content, and when the mutual authentication is established, the transfer of the content is performed. Movements can be continued.
- the reproduction / recording apparatus when the copyright information of the content analogly recorded on the erasable video cassette tape 2 is prohibited from being copied,
- the content that is in a copy-protected state, including the copyright information, is erased from the video cassette tape 2 and converted into a digital signal, and recorded on another video cassette tape 7, whereby the content recorded on the video cassette tape 2 is recorded in the analog format.
- the copy-prohibited content can be transferred to another video cassette tape 7 as a digital signal while the same content does not exist at the same time.
- the encryption unit 10 outputs the encryption key. However, the encryption unit 10 transmits the encryption key generated and output by the decryption unit 12 to the transmission cable 22. , And encrypts the content with the encryption key.
- Embodiment 5
- FIG. 8 is a configuration diagram of a reproduction / recording apparatus according to the fifth embodiment.
- the reproduction / recording apparatus is a first apparatus which receives a content movement instruction by a remote controller 1 as movement instruction means.
- the first device 8a comprises a playback / erasing device 8a, a recording device 8b as a second device, and a transmission cable 22 connecting these devices, and the first device 8a includes an erasable video on which content is recorded.
- the second device 8 b includes a second authentication unit 21, a decryption unit 12, a decompression unit 24, a digital signal recording unit 13, and a video cassette tape 7 to which the content is moved. Is included. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted below. .
- the compression section 23 compresses the image data of the content, and inserts the additional information such as the copyright information and the movement information into an area obtained by the compression.
- the decompression unit 24 decompresses the image data of the content compressed by the compression unit 23, and outputs original image data before compression.
- a method of compressing and expanding image data will be described.
- the total number of values used as pixel values of the image data is smaller than the total number of values represented by the number of bits per pixel N, that is, used as pixel values.
- a single value G is generated by arranging multiple pixel values and arranging digits (however, each pixel value is padded with zeros until the maximum digit number N is reached). From among the values (unused generated values) generated by arranging a plurality of pixel values including the unused pixel values in the same manner as above and having a digit, the unused generated values are smaller than the generated values G. Is subtracted from the total number T.
- pixel values are represented by 2 bits, and the values actually used as pixel values are assumed to be three values of 00, 01, and 10 in binary, and there is image data V having three pixels. And Since each pixel of the image data V has 2 bits, the ⁇ "value generated by arranging these three pixel values to have a digit becomes 6-bit image data.
- 'image data V There is one value that is not used as a pixel value in, and the value is a binary number 11.
- image data V is a binary number and is 00, 10, or 10
- There are two unused generated values (000011 and 000111) smaller than the generated value 001010, and 001010-000010 001000 is the new image data, and the image data V is a binary number.
- the 6-bit-length image data V is the most significant bit. Is converted to new image data in which all are zero, and as a result, image data compressed to a 5-bit length is obtained.
- FIG. 9 is a formula for calculating data compression ⁇ ) according to the fifth embodiment
- FIG. 10 is a configuration diagram of a reproducing / recording apparatus according to the fifth embodiment.
- the luminance value can take a value from 16 to 235 in decimal (220 gradations).
- 16 is subtracted from all luminance values, and a value from 0 to 219 is obtained. To take.
- the configuration of the calculation formula in FIG. 9 is as shown in FIG. 10.
- the configuration diagram in FIG. 10 exists in the compression unit 23, 23a is the image data separation unit, and 23b to 23e are The multiplier, 23 f is an adder.
- the image data separating section 23a separates the image data G1 into pixels and outputs the separated pixels.
- the multipliers 23b to 23e perform multiplication by bit shifting and adding each pixel value. For example, for D8 hX d2, since D8h is 1 1 1 11000 in binary, the value obtained by expanding d2 by 7 bits and shifting it to the left by 7 bits, and the value immediately after shifting by 6 bits to 4 bits The sum of the shifted value and the value shifted by 3 bits can be calculated. The other terms are calculated in the same way, and 23 f calculates their sum and outputs G 2. In this way, compressed data G2 can be obtained. Since these are performed within a fixed time, compression can be performed in synchronization with the input speed of image data without accumulating delay due to compression. As described above, the image data is based on the NTSC C ITU-R 601 standard luminance data every 5 pixels. Compressed.
- the expansion in the expansion unit 24 is performed by calculating the total number of unused generation values smaller than the generation value G, that is, the total number T, and adding the total number T to the generation value G.
- FIGS. 1 1 ′ (a) and (b) are equations for decompressing the compressed data G 2, and FIG. 11 (b) is obtained by using the respective divided values in FIG. 11 (a).
- the pixel data G1 before compression is reproduced by adding each of the divided values to the compressed data value G2 as shown in FIG.
- the configuration of the calculation in Fig. 11 is as shown in Fig. 12.
- the configuration shown in FIG. 12 exists in the decompression unit 24, 24a is a compressed data separation unit, 24b to 24e are dividers, 24f to 24i are multipliers, and 24j is an addition ⁇ .
- Compressed data separation section 24 a outputs the compressed data string input sequentially takes out the compressed data G 2, the divider 24-24 6 are each performed division using known methods retraction method Output the quotient.
- the multipliers 24f to 24i each perform a multiplication and output the result.
- the adder 24 j calculates the sum of G 2 ⁇ and the outputs of the multipliers 24 f to 24 i and outputs G 1. In this manner, the compressed data G1 before being compressed by the compression unit 23 can be obtained. Since these are performed within a fixed time, the delay due to decompression does not accumulate and the input speed of the compressed image data can be reduced. Can be extended synchronously. '.
- the general form of the above-mentioned elongation method is shown below.
- the number of bits of each pixel is M
- the number of values actually used is U ( ⁇ 2 to the power of M)
- the number of data before compression is Wl
- the number of data after compression is W2
- the sum of the value repeatedly added (in this case, four times) and W2 is W1, and data can be expanded by repeating the bit shift and addition.
- the compression unit 23 adds 16 reduced before compression to each pixel value of the expanded image data G1 to simplify the compression, and outputs the original image data.
- the above-described compression method and decompression method can be applied to chrominance data in a similar manner, and can be applied to digital data other than image data.
- the first authentication unit 20 and the second authentication unit 21 perform mutual authentication via the transmission cable 22. This mutual authentication is the same as that described in the third embodiment. When the authentication is established, the content is moved.
- the reproduction unit 3 reproduces the content recorded on the erasable video tape 2 and outputs it to the copyright information detection unit 4.
- the copyright information detecting unit 4 detects whether or not the content is prohibited from being copied.
- the copyright information detection unit 4 detects that the content of the video cassette tape 2 is prohibited from being copied
- the content reproduced by the reproduction unit 3 is output to the compression unit 23.
- the compression section 23 the image data of the content is compressed using the above-described compression method, and additional information such as copyright information and movement information is inserted into an area secured by the compression. After that, the content data is output to the encryption unit 10 and encrypted.
- a temporary storage device for temporarily storing content data may be added in order to move the content continuously and efficiently.
- the first authentication unit 20 transmits the encrypted content data, together with the encryption key and the additional information, via the transmission cape 22 without increasing the transmission rate by the compression method.
- the second authentication unit 21 detects and outputs the additional information, and the second device 8b receives the movement information of the additional information. If it is, continue moving the content.
- the f-encoded content data sent to the second device 8b is decrypted by the decryption unit 12 based on the encryption key. Also, by sending information as to whether or not compression is applied by the compression unit 23, if compression is applied, the expansion unit 24 expands the data compressed by the above-described expansion method, The contents are digitally recorded on a video cassette tape 7.
- the reproduction / recording apparatus when the copyright information of the content including the image data recorded on the erasable video cassette tape 2 is prohibited from being copied,
- the content including the copyright information indicating the copy prohibition, the copy prohibited status is erased from the video recording tape 2, and the image data is compressed to secure an area for adding the additional information.
- the copy-protected contents recorded on the video cassette tape 2 can be recorded separately without increasing the transmission rate while preventing the same content from existing at the same time. Can be moved to the video cassette tape 7.
- FIG. 13 is a configuration diagram of a reproduction / recording apparatus according to the sixth embodiment, in which components that are the same as those of the above-described embodiment regarding the movement of content are omitted.
- the playback / recording device according to the sixth embodiment includes a playback / erasing device 8a, which is a first device for receiving a content movement instruction by a remote control 1, which is a movement enhancement means, and a recording device, which is a second device.
- the first device 8a comprises an apparatus 8b and a transmission cable 22 connecting them.
- the first apparatus 8a comprises an erasable video tape 2 on which contents are recorded, a reproducing section 3, and an erasing section. 5, a first control unit 25, and a first authentication unit 20.
- the second device 8b includes a second authentication unit 21 and a second control unit 26.
- the digital signal recording section 27 records data of the moving content on the magneto-optical disk 29.
- the digital signal reproducing unit 28 reproduces data of the content recorded on the magneto-optical disk 29.
- the first control unit 25 controls content movement processing in the first device 8a.
- the second control unit 26 outputs a result of comparison between the recorded data by the digital signal recording unit 27 and the reproduced data by the digital signal reproduction unit 28, and controls the content movement processing in the second device 8b. Is what you do.
- the first device 8a When the first device 8a receives the instruction to move the content from the remote controller 1, mutual authentication is performed between the first authentication unit 20 and the second authentication unit 21. When it is detected that the content of the video cassette tape 2 is copy-protected, the content reproduced by the reproducing unit 3 is converted into digital data or the like, and is transmitted digitally to the second device 8b via the transmission cable 22. Is done. Further, the content reproduced in the reproducing unit 3 is erased in the erasing unit 5.
- the digital signal recording section 27 digitally records the data of the moving content on the magneto-optical disk 29 ', and the digital signal reproducing section 28 reproduces the digitally recorded data.
- the second control unit 26 compares the data reproduced by the digital signal reproducing unit 28 with the data recorded by the digital signal recording unit 27, and outputs the result. As a result of the data comparison, if they are equal, the recording to the magneto-optical disk 29 by the digital signal recording unit 27 is continued, and if they are not equal, the second control unit 26 While stopping the movement process of b, the occurrence of mismatch and the position information thereof are output to the second authentication unit 21 as the movement information, and notified to the first control unit 25 via the first authentication unit 20.
- the first control unit 25 stops the moving process of the first device 8a. Then, by restarting the movement of the content from the position where the recording data by the digital signal recording unit 27 was not normally performed, the content recorded on the video cassette tape 2 is normally recorded on the video cassette tape 7. , It is possible to move.
- the present reproduction / recording apparatus performs content division by counting a specific number of data using a clock used in other digital processing and time counting.
- the clock the clocks of the first and second devices 8a and 8b may be used. Even if the frequencies of the clocks are different, the devices 8a and 8b may have their respective clocks.
- the second device 8b uses the first authentication unit 20 and the second authentication unit 21 to determine the section number (for example, a continuously assigned count) recorded by the digital signal recording unit 27. ) Is sequentially sent to the first device 8a as the movement information.
- the first device 8a receives the segment information
- the first device 8a reproduces and outputs the next content segment to output the content segment. It can be performed stably in each section unit.
- the content transfer source that is, the first storage medium is a storage medium such as a magneto-optical disk, a magnetic disk, or an optical disk (not shown)
- the movement is performed in units of bytes.
- the recording position and the erasing position of the moving destination in the moving content can be made the same, and the copy-inhibited content such as a still image can be appropriately moved.
- content information information indicating permission / prohibition of content movement is recorded on a storage medium as part of copyright information, and the movement permission / prohibition information is recorded in the copyright information detection unit 4 described in the above embodiment. , The content movement can be controlled under this information.
- movement is permitted even if the source and destination storage media types (tape and disk, etc.) and recording formats (digital or analog) differ as content information.
- Information is added as part of the copyright information, or is newly assigned to the reserved bits of CGMS described in the third embodiment.
- the movement can be restricted, and the movement of the content can be controlled based on the information by detecting the content information by the copyright information detection unit 4 or the like described in the above embodiment.
- the content to be moved may be already encrypted.
- the transfer of content between devices that have performed mutual authentication is described. However, the same applies to a playback / recording device in which playback, erasure, and recording means exist in one device. Content can be moved.
- the movement of the moving content can be performed stably.
- FIG. 14 is a configuration diagram of the reproducing / recording apparatus according to the seventh embodiment, in which components which are the same as those of the above-described embodiment regarding the movement of content are omitted.
- the reproduction / recording device 8 in the seventh embodiment includes a CPU 30, a non-volatile memory 31, and a display panel 32.
- a content movement instruction is received by a remote controller 1 as movement instruction means, the data is erased. It moves content from a possible storage medium to another storage medium.
- the same components as those in the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. .
- the CPU 30 records information indicating the movement of the content in the nonvolatile memory 31 and simultaneously erases the information.
- the non-volatile memory 31 holds information relating to content movement such as the movement information, the copyright information, and information indicating a classification of content.
- the display panel 32 displays the movement state of the content outside the device.
- the CPU Numeral 30 records and stores information indicating the movement of the content in the nonvolatile memory 31.
- the information in the nonvolatile memory 31 is erased.
- the display panel 32 displays, outside the apparatus, that the content is moving.
- the reproduction / recording apparatus having the reproducing, erasing, and recording means in one apparatus has been described.
- the reproducing / recording apparatus having the first apparatus and the second apparatus is also applicable.
- the content can be moved.
- the non-volatile memory 3 By accessing 1, the movement information can be obtained, and the movement can be resumed and continued.
- a message indicating the movement is displayed on the display panel, so that the viewer can be informed that the content is moving.
- the reproduction / recording apparatus of the present invention includes a copy prohibiting copy recorded on a recording medium.
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)
- Management Or Editing Of Information On Record Carriers (AREA)
- Television Systems (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/031,360 US7587125B2 (en) | 2000-05-19 | 2001-05-18 | Reproducing/recording apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000148713A JP3573685B2 (ja) | 2000-05-19 | 2000-05-19 | 再生記録装置 |
JP2000-148713 | 2000-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001089210A1 true WO2001089210A1 (fr) | 2001-11-22 |
Family
ID=18654693
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2001/004156 WO2001089210A1 (fr) | 2000-05-19 | 2001-05-18 | Appareil de reproduction/enregistrement |
Country Status (6)
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US (1) | US7587125B2 (ja) |
JP (1) | JP3573685B2 (ja) |
KR (1) | KR100494966B1 (ja) |
CN (1) | CN1210952C (ja) |
TW (1) | TW589888B (ja) |
WO (1) | WO2001089210A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100341002C (zh) * | 2002-06-10 | 2007-10-03 | 坂村健 | Ic卡、终端装置以及数据通信方法 |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003061031A (ja) * | 2001-06-08 | 2003-02-28 | Hitachi Ltd | ディジタル情報再生装置および情報記録再生装置 |
US20030056106A1 (en) * | 2001-09-07 | 2003-03-20 | Wang Sheng E. | Encryption system for preventing data from being copied illegally and method of the same |
JP3859542B2 (ja) * | 2002-05-15 | 2006-12-20 | 株式会社東芝 | 記録再生装置 |
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US20040098601A1 (en) * | 2002-11-14 | 2004-05-20 | Epstein Michael A. | Secure local copy protection |
JP3947978B2 (ja) * | 2003-12-24 | 2007-07-25 | ソニー株式会社 | 再生システム、再生装置及び再生方法 |
JP2005293731A (ja) * | 2004-03-31 | 2005-10-20 | Toshiba Corp | コンテンツ記録方法、コンテンツ記録システム、及び記録再生装置 |
JP2006065503A (ja) * | 2004-08-25 | 2006-03-09 | Matsushita Electric Ind Co Ltd | 権利情報を格納した記録媒体、情報処理装置及び権利情報の管理方法 |
US7869595B2 (en) | 2005-01-20 | 2011-01-11 | Panasonic Corporation | Content copying device and content copying method |
JP2006295344A (ja) * | 2005-04-06 | 2006-10-26 | Toshiba Corp | コンテンツ処理装置 |
JP4893040B2 (ja) * | 2006-03-17 | 2012-03-07 | ソニー株式会社 | 暗号化データ記録装置 |
JP2009124693A (ja) * | 2007-10-25 | 2009-06-04 | Hitachi Ltd | 録画装置及びコンテンツ管理方法 |
JP4292230B1 (ja) * | 2008-03-14 | 2009-07-08 | 株式会社東芝 | デジタル放送受信記録再生装置及びデジタル放送受信記録再生方法 |
JP4592804B2 (ja) * | 2008-12-26 | 2010-12-08 | 株式会社東芝 | 鍵管理装置および鍵管理システム |
CN102132257A (zh) * | 2009-03-11 | 2011-07-20 | 松下电器产业株式会社 | 记录再生装置及方法 |
JP5007735B2 (ja) * | 2009-07-13 | 2012-08-22 | ソニー株式会社 | 記録システム、制御装置および方法、並びにプログラム |
US8602257B2 (en) * | 2009-09-16 | 2013-12-10 | David Godsell | Multifunctional hand sanitizer device |
US20130201328A1 (en) * | 2012-02-08 | 2013-08-08 | Hing Ping Michael CHUNG | Multimedia processing as a service |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09130766A (ja) * | 1995-10-26 | 1997-05-16 | Sony Corp | テレビジョン信号の伝送または記録方法、および記録装置 |
JPH10322648A (ja) * | 1997-05-14 | 1998-12-04 | Sony Corp | 情報信号利用制限方法、情報信号処理装置および情報信号記録媒体 |
JP2001014221A (ja) * | 1999-04-27 | 2001-01-19 | Victor Co Of Japan Ltd | コンテンツ情報記録方法及びコンテンツ情報記録装置 |
JP2001022647A (ja) * | 1999-07-09 | 2001-01-26 | Toshiba Corp | コンテンツ管理方法およびコンテンツ管理装置および記録媒体 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4660116A (en) | 1985-04-22 | 1987-04-21 | Westfall Wade H | Video tape cassette with internal tape erasing means |
JP2771808B2 (ja) | 1986-12-27 | 1998-07-02 | ソニー株式会社 | 記録媒体 |
US5057947A (en) | 1988-02-10 | 1991-10-15 | Matsushita Electric Industrial Co., Ltd. | Recording and reproducing apparatus with limited digital copying |
JP3617115B2 (ja) * | 1995-03-31 | 2005-02-02 | ソニー株式会社 | ビデオ信号処理装置および処理方法 |
KR0166923B1 (ko) * | 1995-09-18 | 1999-03-20 | 구자홍 | 디지탈 방송 시스템의 불법 시청 및 복사 방지방법 및 장치 |
US5896255A (en) | 1995-10-02 | 1999-04-20 | Aris Mardirossian, Inc. | Magnetic disc cartridge and corresponding system/method for limiting coping of software |
JP3901268B2 (ja) * | 1997-01-23 | 2007-04-04 | ソニー株式会社 | 情報信号出力制御装置、情報信号出力制御方法、情報信号複製防止装置および情報信号複製防止方法 |
JPH10340531A (ja) * | 1997-06-10 | 1998-12-22 | Sony Corp | 情報信号記録装置、情報信号記録方法および情報信号記録媒体 |
JPH11176090A (ja) * | 1997-12-10 | 1999-07-02 | Sony Corp | データ再生装置、データ処理装置、データ伝送システム、データ再生方法、データ処理方法、並びに、データ伝送方法 |
JPH11176091A (ja) | 1997-12-15 | 1999-07-02 | Hitachi Ltd | ディジタル情報入出力装置、受信装置、記録装置、および再生装置 |
JPH11213552A (ja) | 1998-01-26 | 1999-08-06 | Matsushita Electric Ind Co Ltd | データ記録再生方法およびデータ記録再生システム |
TW425543B (en) * | 1998-04-14 | 2001-03-11 | Hitachi Ltd | Data reproduction method and device, data scrambling method, data recording method and device, recorded data reproduction device and the verification method thereof, and semiconductor chip |
JP4208998B2 (ja) | 1998-07-03 | 2009-01-14 | パイオニア株式会社 | 複製制限機能を備えた記録再生システム、記録装置および再生装置 |
JP4025941B2 (ja) * | 1998-12-28 | 2007-12-26 | ソニー株式会社 | 情報信号の複製制御システムおよび情報出力装置 |
US6904227B1 (en) * | 1999-02-15 | 2005-06-07 | Nec Corporation | Device and method for editing video and/or audio data recorded in a disc storage medium |
JP4356178B2 (ja) | 1999-03-09 | 2009-11-04 | ソニー株式会社 | 再生装置 |
US6810200B1 (en) * | 1999-04-14 | 2004-10-26 | Matsushita Electric Industrial Co., Ltd. | Digital data processing device that restricts usage of data present on a recording medium |
JP3977549B2 (ja) * | 1999-04-30 | 2007-09-19 | 株式会社東芝 | コンテンツ管理方法、コンテンツ利用管理システム、コンテンツ利用管理装置及び再生装置 |
JP4207335B2 (ja) | 1999-10-26 | 2009-01-14 | ソニー株式会社 | 記録装置、記録再生システム |
-
2000
- 2000-05-19 JP JP2000148713A patent/JP3573685B2/ja not_active Expired - Fee Related
-
2001
- 2001-05-18 TW TW090111932A patent/TW589888B/zh not_active IP Right Cessation
- 2001-05-18 KR KR10-2002-7000767A patent/KR100494966B1/ko not_active IP Right Cessation
- 2001-05-18 CN CNB018013317A patent/CN1210952C/zh not_active Expired - Fee Related
- 2001-05-18 US US10/031,360 patent/US7587125B2/en not_active Expired - Fee Related
- 2001-05-18 WO PCT/JP2001/004156 patent/WO2001089210A1/ja not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09130766A (ja) * | 1995-10-26 | 1997-05-16 | Sony Corp | テレビジョン信号の伝送または記録方法、および記録装置 |
JPH10322648A (ja) * | 1997-05-14 | 1998-12-04 | Sony Corp | 情報信号利用制限方法、情報信号処理装置および情報信号記録媒体 |
JP2001014221A (ja) * | 1999-04-27 | 2001-01-19 | Victor Co Of Japan Ltd | コンテンツ情報記録方法及びコンテンツ情報記録装置 |
JP2001022647A (ja) * | 1999-07-09 | 2001-01-26 | Toshiba Corp | コンテンツ管理方法およびコンテンツ管理装置および記録媒体 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100341002C (zh) * | 2002-06-10 | 2007-10-03 | 坂村健 | Ic卡、终端装置以及数据通信方法 |
US7357329B2 (en) | 2002-06-10 | 2008-04-15 | Ken Sakamura | IC card, terminal device, and data communication method |
Also Published As
Publication number | Publication date |
---|---|
JP2001333371A (ja) | 2001-11-30 |
CN1381135A (zh) | 2002-11-20 |
KR100494966B1 (ko) | 2005-06-14 |
JP3573685B2 (ja) | 2004-10-06 |
KR20020013969A (ko) | 2002-02-21 |
US20020150389A1 (en) | 2002-10-17 |
TW589888B (en) | 2004-06-01 |
CN1210952C (zh) | 2005-07-13 |
US7587125B2 (en) | 2009-09-08 |
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