Recording apparatus, reproduction apparatus, data processing apparatus, recording and reproduction apparatus and data transmission apparatus and corresponding methods
First Claim
Patent Images
1. A recording apparatus comprising:
- an encryption means of encrypting data by using recording apparatus specific information, the recording apparatus specific information being used for encryption and decryption performed within said recording apparatus, and not being used outside of said recording apparatus;
control means of controlling said encrypted data to be recorded;
recording means controlled by said control means of recording said encrypted data on a disk;
wherein;
said recording means is operable to record said encrypted data on the disk in which a plurality of recording blocks are provided, the recording blocks being divided into a header portion and a data portion;
said encryption means is operable to encrypt data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said recording apparatus.
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Abstract
An encryptor is provided for encrypting AV data sent from an interface. A controller controls recording of the encrypted AV data by controlling a recorder for recording the encrypted AV data in a magnetic disk. The recorder is controlled by the controller so as to reproduce the data recorded on the disk. A decrypter decrypts the reproduced data that is sent to the interface.
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Citations
47 Claims
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1. A recording apparatus comprising:
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an encryption means of encrypting data by using recording apparatus specific information, the recording apparatus specific information being used for encryption and decryption performed within said recording apparatus, and not being used outside of said recording apparatus; control means of controlling said encrypted data to be recorded; recording means controlled by said control means of recording said encrypted data on a disk; wherein;
said recording means is operable to record said encrypted data on the disk in which a plurality of recording blocks are provided, the recording blocks being divided into a header portion and a data portion;said encryption means is operable to encrypt data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said recording apparatus. - View Dependent Claims (14, 20, 21, 23, 25, 31, 32, 33, 34, 35, 36, 37, 38)
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2. A recording apparatus comprising:
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an encryption means of encrypting data; a control means of controlling said encrypted data to be recorded; a recording means controlled by said control means of recording said encrypted data on a disk in which a plurality of recording blocks are provided, wherein said encryption means encrypts said data by using recording unit information that is a numeral and/or a symbol specific to respective recording blocks each corresponding to a recording unit that is a minimum unit for said control means to sequentially access said recording means, the recording unit information is assigned to each of the recording blocks, and the recording unit information assigned to different recording blocks are different from each other, said recording blocks, provided in the disk on which said recording means is operable to record said encrypted data, is divided into a header portion and a data portion; and said encryption means is operable to encrypt data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said recording apparatus. - View Dependent Claims (3, 4, 5, 15, 16)
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6. A recording apparatus comprising:
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an encryption means of encrypting data; a control means of controlling said encrypted data to be recorded; a recording means controlled by said control means of recording said encrypted data on a disk, wherein a title key that is a numeric value and/or a symbol is allocated to said data; said encryption means encrypts said title key by using a device unique key that is a numeric value and/or a symbol allocated to, and specific to, said recording apparatus, the device unique key being used for encryption and decryption performed within said recording apparatus, and not being used outside of said recording apparatus; said control means controls said recording means so that said encrypted title key is recorded in said recording means; said recording means is operable to record said encrypted data on the disk in which a plurality of recording blocks are provided, the recording blocks being divided into a header portion and a data portion; and said encryption means is operable to encrypt said title key and data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said recording apparatus. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 17, 18, 19, 22, 24, 26, 27, 28, 29, 30, 39, 40)
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41. An LSI chip comprising:
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an encryption means of encrypting data; a control means of controlling said encrypted data to be recorded; a recording means controlled by said control means of recording said encrypted data on a disk in which a plurality of recording blocks are provided, wherein said encryption means encrypts said data by using recording unit information that is a numeral and/or a specific to respective recording blocks each corresponding to a recording unit that is a minimum unit for said control means to sequentially access said recording means, the recording unit information is assigned to each of the recording blocks and the recording unit information assigned to different recording blocks are different from each other, said recording blocks, provided in the disk on which said recording means is operable to record said encrypted data, is divided into a header portion and a data portion; said encryption means is operable to encrypt data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said LSI chip.
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42. An LSI chip comprising:
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an encryption means of encrypting data; a control means of controlling said encrypted data to be recorded; a recording means controlled by said control means of recording said encrypted data on a disk, wherein a title key that is a numeric value and/or a symbol is allocated to said data; said encryption means encrypts said title key by using a device unique key that is a numeric value and/or a symbol allocated to, and specific to, a recording apparatus, the device unique key being used for encryption and decryption performed within said recording apparatus, and not being used outside of said recording apparatus; said control means controls said recording means so that said encrypted title key is recorded in said recording means; wherein said recording means is operable to record said encrypted data on the disk in which a plurality of recording blocks are provided, the recording blocks being divided into a header portion and a data portion; and said encryption means is operable to encrypt said title key and data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said LSI chip.
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43. A recording apparatus comprising:
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a controller operable to encrypt data by using recording apparatus specific information, the recording apparatus specific information being used for encryption and decryption performed within said recording apparatus, and not being used outside of said recording apparatus; a memory operable to store the encrypted data; said controller is operable to control said memory to store the encrypted data; wherein; said controller is operable to store said encrypted data in the memory provided with a plurality of recording blocks, the recording blocks being divided into a header portion and a data portion; and said controller is operable to encrypt data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said recording apparatus. - View Dependent Claims (44, 45, 46)
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47. A recording apparatus comprising:
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an encryption means of encrypting data, the data including a title key that is a numeric value and/or a symbol, and a copy permission information; a control means of controlling said encrypted data to be recorded; a recording means controlled by said control means of recording said encrypted data on a disk in which a plurality of recording blocks are provided; wherein said encryption means generates key information using said title key and said copy permission information; said encryption means generates a contents key that is information gained by encrypting said key information with a recording unit information which is a numeral and/or a symbol specific to respective recording blocks each corresponding to a recording unit that is a minimum unit for said control means to sequentially access said recording means; said encryption means encrypts said data using said contents key which changes on a recording block by recording block basis; the recording unit information is assigned to each of the recording blocks, and the recording unit information assigned to different recording blocks are different from each other; said recording blocks, provided in the disk on which said recording means is operable to record said encrypted data, is divided into a header portion and a data portion; and said encryption means is operable to encrypt data recorded in the header portion and the data portion to provide a unique recording format which restricts the encrypted data to be played back only on said recording apparatus.
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Specification