RECORDING APPARATUS, REPRODUCTION APPARATUS, DATA PROCESSING APPARATUS, RECORDING AND REPRODUCTION APPARATUS AND DATA TRANSMISSION APPARATUS AND CORRESPONDING METHODS

• US 20070092078A1
• Filed: 10/24/2006
• Published: 04/26/2007
• Est. Priority Date: 12/28/1999
• Status: Abandoned Application

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yoshida, Shuichi, Kuno, Yoshiki, Kubo, Noriaki, Okada, Takanori, Shimizu, Ryosuke, Komeno, Jyun-ichi, Koudo, Toshikazu
• Application Number:
  US11/552,320
• Publication Number:
  US 20070092078A1
• Time in Patent Office: Days
• US Class Current: 380/201
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00188 involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00246 wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
• CPC Class Codes: G11B 20/00492 wherein content or user data is encrypted
• CPC Class Codes: G11B 20/00666 involving a step of erasing or nullifying data, e.g. data being overwritten with a random string
• CPC Class Codes: G11B 20/0071 involving a purchase action
• CPC Class Codes: G11B 20/00746 wherein the usage restriction can be expressed as a specific number
• CPC Class Codes: G11B 20/00768 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
• CPC Class Codes: G11B 20/0084 wherein the usage restriction can be expressed as a specific time or date
• CPC Class Codes: G11B 20/10 Digital recording or reproducing
• CPC Class Codes: G11B 20/12 Formatting, e.g. arrangement of data block or words on the record carriers within interface between computers and data recorders G06F3/06
• CPC Class Codes: G11B 2220/2516 Hard disks
• CPC Class Codes: H04N 2005/91307 by adding a copy protection signal to the video signal
• CPC Class Codes: H04N 2005/91321 the copy protection signal being a copy protection control signal, e.g. a record inhibit signal
• CPC Class Codes: H04N 2005/91328 the copy protection signal being a copy management signal, e.g. a copy generation management signal [CGMS]
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 21/4147 PVR [Personal Video Recorder] H04N5/76 takes precedence ; arrangements for broadcast with accumulation-type receivers H04H20/40
• CPC Class Codes: H04N 21/42661 for reading from or writing on a magnetic storage medium, e.g. hard disk drive
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/43622 : Interfacing an external recording device
• CPC Class Codes: H04N 21/4405 : involving video stream decryption
• CPC Class Codes: H04N 21/4623 : Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message] arrangements for conditional access to broadcast information or to broadcast-related services H04H60/14
• CPC Class Codes: H04N 5/765 : Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/781 : on disks or drums
• CPC Class Codes: H04N 5/85 : on discs or drums
• CPC Class Codes: H04N 5/913 : for scrambling ; for copy protection
• CPC Class Codes: H04N 7/163 : by receiver means only
• CPC Class Codes: H04N 7/1675 : Providing digital key or authorisation information for generation or regeneration of the scrambling sequence pseudo-random number generators in general G06F7/58
• CPC Class Codes: H04N 9/8042 : involving data reduction

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.

Claims

1. A data processing apparatus comprising at least move means of moving data that is recorded in a recording medium for recording data to another recording apparatus, characterized in that, in the case that data that is attempted to be moved by said move means is copy prohibited data prohibited from being copied, the copy prohibited data is encrypted by using an encryption key specific to said data processing apparatus when at least being outputted from said data processing apparatus.

3. A data processing apparatus according to claim 1 or 2, characterized by further comprising encryption means of encrypting said copy prohibited data by using said encryption key.

4. A data processing apparatus according to any of claims 1 or 2, characterized by further comprising a reproduction means of decryption, by using said encryption key, said copy prohibited data encrypted using said encryption key and of reproducing said copy prohibited data.

5. A data processing apparatus according to claim 4, characterized in that:

said reproduction means is means of reproducing said copy prohibited data at a rate required at the time of viewing and listening by the user;

storage means of storing said copy prohibited data that has been transmitted at a rate faster than said rate that is required at the time of viewing and listening by the user in the case that said copy prohibited data encrypted using said encryption key is transmitted at a rate faster than said rate required at the time of viewing and listening by the user from said other recording apparatus is provided; and

said reproduction means can reproduce said copy prohibited data stored in said storage means or data stored in said storage means in advance at the time when said storage means stores said copy prohibited data from said other recording apparatus.

6. A data processing apparatus according to any of claims 1 or 2, characterized in that:

said other recording apparatus is an apparatus that can record data in a second recording medium;

judgment means of judging whether or not said second recording medium is a recording medium corresponding to said data processing apparatus is further provided; and

said move means or said copying means moves or copies said copy prohibited data in the case that said second recording medium is judged to be a recording medium corresponding to said data processing apparatus by said judgment means.

7. A data processing apparatus according to any of claims 1 or 2, characterized in that:

said other recording apparatus is an apparatus that can record data in a second recording medium;

judgment means of judging whether or not said other recording apparatus is an apparatus corresponding to said data processing apparatus is further provided; and

said move means or said copying means moves or copies said copy prohibited data in the case that said other recording apparatus is an apparatus corresponding to said data processing apparatus by said judgment means.

8. A data processing apparatus according to any of claims 1 or 2, characterized in that said move means or said copying means outputs said copy prohibited data as data that can be copied only once when said copy prohibited data is moved or is copied.

9. A recording and reproduction apparatus, characterized by comprising a recording means of recording said copy prohibited data that is encrypted using said encryption key from a data processing apparatus according to any of claims 1 or 2 in a second recording medium.

10. A recording and reproduction apparatus, characterized by comprising:

a recording means of recording said copy prohibited data that is encrypted using said encryption key from a data processing apparatus according to claim 4 in a second recording medium; and

a transmission means of transmitting said copy prohibited data that is recorded in said second recording medium and that is encrypted using said encryption key to said data processing apparatus while still encrypted using said encryption key.

11. A recording and reproduction apparatus, characterized by comprising:

a recording means of recording said copy prohibited data that is encrypted using said encryption key from a data processing apparatus according to claim 6 in said second recording medium; and

a transmission means of transmitting said copy prohibited data that is recorded in said second recording medium and that is encrypted using said encryption key to said data processing apparatus while still encrypted using said encryption key.

12. A recording and reproduction apparatus, characterized by comprising:

a recording means of recording said copy prohibited data encrypted using said encryption key from a data processing apparatus according to any of claims 1 or 2 in a second recording medium; and

decryption and reproduction means of decrypting, by using said encryption key, said copy prohibited data that is recorded in said second recording medium and that is encrypted using said encryption key and of reproducing said copy prohibited data.

13. A recording and reproduction apparatus according to claim 12, characterized by further comprising:

key reproduction means of reproducing an encrypted key recording medium wherein said encryption key is recorded; and

key storage means of storing said encryption key reproduced by said key reproduction means,

wherein said decryption and reproduction means reproduces said copy prohibited data by utilizing said encryption key stored by said key storage means.

14. A recording and reproduction apparatus according to claim 12, characterized by further comprising a reception means of receiving said encryption key that is transmitted from said data processing apparatus,

wherein said decryption and reproduction means reproduces said copy prohibited data by utilizing said encryption key received by said reception means.

26. A data processing apparatus according to any of claims 1, 2, 15 or 16, characterized by further comprising a fee imposition information transmission means of transmitting fee imposition information with respect to move or copying of said data to a management apparatus for managing said data processing apparatus when said move means carries out the move of said data or when said copying means carries out the copying of said data.

27. A data processing apparatus according to any of claims 1, 2, 15 or 16 characterized in that said move means moves said copy prohibited data to, or said copying means copies said copy prohibited data into, said other recording apparatus when at least a management apparatus, which has the ability of imposing a fee on the move or on the copying of said copy prohibited data, is confirmed to be connected to an interface to which said data processing apparatus and said other recording apparatus are connected.

2. A data processing apparatus comprising at least copying means of copying data that is recorded on a recording medium for recording data into another recording apparatus, characterized in that, in the case that data that is attempted to be copied by said copying means is copy permission information that is prohibited from being copied, the copy prohibited data is encrypted by using an encryption key specific to said data processing apparatus when at least being outputted from said data processing apparatus.

15. A data processing apparatus, characterized by comprising at least move means of moving data that is recorded in a recording medium for recording data to another recording apparatus as data in a format that can be decrypted in the other recording apparatus,

wherein data that is attempted to be moved by said move means is copy prohibited data that is prohibited from being copied.

17. A data processing apparatus according to claim 15 or 16, characterized in that the data in a format that can be decrypted in said other recording apparatus means plain sentence data, data that is encrypted using a key specific to said other recording apparatus or data that is encrypted using a key attached to a second recording medium in said other recording apparatus.

18. A data processing apparatus according to claim 17, characterized in that the data in a format that can be decrypted in said other recording apparatus is also data in a format used in said other recording apparatus.

19. A data processing apparatus according to any of claims 15 or 16, characterized in that:

said other recording apparatus is an apparatus that can record data in said recording medium;

judgment means of judging whether or not said second recording medium corresponds to said data processing apparatus is further provided; and

said move means or said copying means moves or copies said copy prohibited data in the case that said second recording medium is judged to be a recording medium corresponding to said data processing apparatus according to said judgment means.

20. A data processing apparatus according to claim 19, characterized in that:

said judgment means carries out said judgment by using said key in the case that a key indicating that said second recording medium is a recording medium corresponding to said data processing apparatus is attached to said second recording medium;

encryption means of encrypting said copy prohibited data by using said key in the case that said second recording medium is judged to be a recording medium corresponding to said data processing apparatus by said judgment means is further provided; and

said move means or said copying means moves or copies said encrypted copy prohibited data.

21. A data processing apparatus according to any of claims 15 or 16, characterized in that:

said other recording apparatus is an apparatus that can record data in a second recording medium;

judgment means of judging whether or not said other recording apparatus is an apparatus corresponding to said data processing apparatus is further provided; and

said move means or said copying means moves or copies said copy prohibited data in the case that said other recording apparatus is judged to be an apparatus corresponding to said data processing apparatus by said judgment means.

22. A data processing apparatus according to claim 21, characterized in that:

in the case that said judgment means has a key that indicates that said other recording apparatus is an apparatus corresponding to said data processing apparatus, said judgment means carries out said judgment by using said key;

encryption means of encrypting said copy prohibited data by using said key, in the case that said other recording apparatus is judged to be an apparatus corresponding to said data processing apparatus by said judgment means, is further provided; and

said move means or said copying means moves or copies said encrypted copy prohibited data.

23. A data processing apparatus according to any of claims 15 or 16, characterized in that said move means or said copying means outputs said copy prohibited data as data that can be copied only once when said copy prohibited data is moved or copied.

24. A recording and reproduction apparatus for recording said copy prohibited data, from a data processing apparatus according to claim 15 or 16, in a second recording medium and for reproducing said copy prohibited data from said second recording medium,

wherein said copy prohibited data is plain sentence data, and

wherein said recording and reproduction apparatus is characterized by comprising:

encryption means of encrypting said copy prohibited data by using an encryption key attached to said second recording medium or by using an encryption key specific to said recording and reproduction apparatus;

recording means of recording said copy prohibited data encrypted by said encryption means in said second recording medium; and

reproduction means of decrypting said encrypted copy prohibited data that is recorded in said second recording medium by utilizing said key so as to reproduce said copy prohibited data.

25. A recording and reproduction apparatus for recording said copy prohibited data, from a data processing apparatus according to claim 15 or 16, in a second recording medium and for reproducing said copy prohibited data from said second recording medium,

wherein said copy prohibited data is data encrypted by a key specific to said recording and reproduction apparatus or data encrypted by using a key attached to said second recording medium,

wherein said recording and reproduction apparatus is characterized by comprising:

recording means of recording said encrypted copy prohibited data in said second recording medium; and

reproduction means of decrypting said encrypted copy prohibited data that is recorded in said second recording medium by utilizing said key so as to reproduce said copy prohibited data.

16. A data processing apparatus, characterized by comprising at least copying means of copying data that is recorded in a recording medium for recording data in another recording apparatus as data in a format that can be decrypted in the other recording apparatus,

wherein data that is attempted to be copied by said copying means is copy prohibited data that is prohibited from being copied.

28. An encrypted data decrypting and recording apparatus system characterized by comprising:

a plurality of recording apparatuses that respectively record encrypted copy prohibited data, of which the content is identical, that is prohibited from being copied; and

a decrypting and recording apparatus having decryption means of decrypting said encrypted copy prohibited data that is outputted from said plurality of recording apparatuses and a recording means of recording encrypted, or unencrypted, copy prohibited data, of which the content is identical to said copy prohibited data.

29. A decrypting and recording apparatus, characterized by comprising:

decryption means of decrypting encrypted copy prohibited data, which is prohibited from being copied and which is outputted from a plurality of recording apparatuses in which said encrypted copy prohibited data, of which the content is identical, is respectively recorded; and

recording means of recording encrypted, or unencrypted, copy prohibited data, of which the content is identical to that of said copy prohibited data.

30. A recording apparatus, characterized by being one of a plurality of recording apparatuses that respectively record encrypted copy prohibited data, of which the content is identical, that is prohibited from being copied,

wherein said recording apparatus comprises a recording means of recording said encrypted copy prohibited data and an output means of outputting said encrypted copy prohibited data that is recorded in said recording means, and

wherein said encrypted copy prohibited data outputted from said output means is data that can only be decrypted in a decrypting and recording apparatus having at least a decryption means of decrypting said encrypted copy prohibited data.

31. A data transmission apparatus characterized by comprising transmission means of transmitting a stream formed of a plurality of pieces of data,

wherein each of said pieces of data in said stream, or within each of blocks forming said stream, is data that cannot be reproduced unless the piece of data chronologically positioned one position before said data is reproduced, and

wherein said transmission means transmits each piece of said data, of data in said stream, or each of the blocks forming said stream, in the order of from the rear toward the head in a chronological manner.