Information recording apparatus and method, information reproducing apparatus and method, information recording/reproducing apparatus and method, and computer program product

• US 20060018471A1
• Filed: 07/11/2005
• Published: 01/26/2006
• Est. Priority Date: 07/09/2004
• Status: Abandoned Application

• Current Assignee: Pioneer Corporation
• Original Assignee: Pioneer Corporation
• Inventors: Tada, Kenichiro
• Application Number:
  US11/177,396
• Publication Number:
  US 20060018471A1
• Time in Patent Office: Days
• US Class Current: 380/228
• 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: 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 21/440218 by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 conversion of standards in analogue television systems H04N7/01
• CPC Class Codes: H04N 21/440263 by altering the spatial resolution, e.g. for displaying on a connected PDA
• CPC Class Codes: H04N 21/4408 involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/8355 involving usage data, e.g. number of copies or viewings allowed
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection

Abstract

An information recording apparatus for performing MOVE processing of moving first content information having a first reproduction quality, which is recorded on a first recording medium, to a second recording medium, the information recording apparatus provided with: a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information; an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing.

Claims

1. An information recording apparatus for performing MOVE processing of moving first content information having a first reproduction quality, which is recorded on a first recording medium, to a second recording medium,

said information recording apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing.

2. The information recording apparatus according to claim 1, further comprising:

a down-convert device for down-converting the first content information, to thereby generate second content information having a second reproduction quality which is lower quality than the first reproduction quality;

a first recording device for recording the second content information onto the second recording medium; and

a deleting device for deleting the first content information recorded on the first recording medium if the second content information is recorded onto the second recording medium.

3. The information recording apparatus according to claim 2, wherein said first recording device further records the generated history information onto the second recording medium.

4. The information recording apparatus according to claim 1, wherein the history information includes information which can specify at least one of the scramble key, said information recording apparatus which performs the MOVE processing, the first content information to which the MOVE processing is performed, and a recording position of the second content information to which the MOVE processing is performed on the second recording medium.

5. The information recording apparatus according to claim 1, wherein the identifier is peculiar information to the second recording medium.

6. The information recording apparatus according to claim 1, further comprising:

a second recording device for recording the scramble information onto the first recording medium.

7. The information recording apparatus according to claim 1, further comprising:

a key generating device for generating the scramble key.

8. The information recording apparatus according to claim 1, further comprising:

an extracting device for extracting the scramble information on the basis of a difference in data structures of the first content information and the scramble information; and

a displaying device for displaying a list of the extracted scramble information.

9. An information recording method of performing MOVE processing of moving first content information having a first reproduction quality, which is recorded on a first recording medium, to a second recording medium, said information recording method comprising:

a scramble process of performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing process of storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and

a history information generating process of generating history information which indicates a history of each of the MOVE processing and the scramble processing.

10. An information reproducing apparatus for reproducing first content information which is moved onto a second recording medium by an information recording apparatus for performing MOVE processing of moving the first content information having a first reproduction quality, which is recorded on a first recording medium, to the second recording medium, said information recording apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing,

said information reproducing apparatus comprising;

a first judging device for judging whether or not an identifier of the second recording medium which is a reproduction object by said information reproducing apparatus is included in the identifier, which is stored in said identifier storing device, of the second recording medium which is the MOVE destination of the first content information;

an obtaining device for obtaining the history information if it is judged that the identifier of the second recording medium which is the reproduction object is included in the identifier of the second recording medium which is the MOVE destination of the first content information, by said judging device;

a content information generating device for generating the first content information on the basis of each of the scramble information and the scramble key which are specified by the history information; and

a reproducing device for reproducing the generated first content information.

11. The information reproducing apparatus according to claim 10, wherein

the history information is recorded on the second recording medium, said obtaining device obtains the history information from the second recording medium,

said information reproducing apparatus further comprises a second judging device for judging whether or not it is possible to reproduce the first content information on said information reproducing apparatus by referring to the obtained history information, and

said content information generating device generates the first content information if it is judged that it is possible to reproduce the first content information on said information reproducing apparatus, by said second judging device.

12. The information reproducing apparatus according to claim 10, further comprising:

an extracting device for extracting the scramble information on the basis of a difference in data structures of the first content information and the scramble information; and

a displaying device for displaying a list of the extracted scramble information.

13. An information reproducing method of reproducing first content information which is moved onto a second recording medium by an information recording apparatus for performing MOVE processing of moving the first content information having a first reproduction quality, which is recorded on a first recording medium, to the second recording medium, said information recording apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing,

said information reproducing method comprising;

a first judging process of judging whether or not an identifier of the second recording medium which is a reproduction object by said information reproducing apparatus is included in the identifier, which is stored in said identifier storing device, of the second recording medium which is the MOVE destination of the first content information;

an obtaining process of obtaining the history information if it is judged that the identifier of the second recording medium which is the reproduction object is included in the identifier of the second recording medium which is the MOVE destination of the first content information, by said judging process;

a content information generating process of generating the first content information on the basis of each of the scramble information and the scramble key which are specified by the history information; and

a reproducing process of reproducing the generated first content information.

14. An information recording/reproducing apparatus for performing MOVE processing of moving first content information having a first reproduction quality, which is recorded on a first recording medium, to a second recording medium,

said information recording/reproducing apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information;

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing;

a first judging device for judging whether or not an identifier of the second recording medium which is a reproduction object by said information reproducing apparatus is included in the identifier, which is stored in said identifier storing device, of the second recording medium which is the MOVE destination of the first content information;

an obtaining device for obtaining the history information if it is judged that the identifier of the second recording medium which is the reproduction object is included in the identifier of the second recording medium which is the MOVE destination of the first content information, by said judging device;

a content information generating device for generating the first content information on the basis of each of the scramble information and the scramble key which are specified by the history information; and

a reproducing device for reproducing the generated first content information.

15. The information recording/reproducing apparatus according to claim 14, wherein

the history information including information which can specify an information recording/reproducing apparatus which performs the MOVE processing is recorded on the second recording medium, said obtaining device obtains the history information from the second recording medium,

said information recording/reproducing apparatus further comprises a second judging device for judging whether or not the information recording/reproducing apparatus specified by the obtained history information coincides with said information recording/reproducing apparatus, and

said content information generating device generates the first content information if it is judged that the information recording/reproducing apparatus specified by the obtained history information coincides with said information recording/reproducing apparatus, by said second judging device.

16. The information recording/reproducing apparatus according to claim 14, further comprising:

an extracting device for extracting the scramble information on the basis of a difference in data structures of the first content information and the scramble information; and

a displaying device for displaying a list of the extracted scramble information.

17. An information recording/reproducing method of performing MOVE processing of moving first content information having a first reproduction quality, which is recorded on a first recording medium, to a second recording medium,

said information recording/reproducing method comprising:

a scramble process of performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing process of storing an identifier to identify the second recording medium which is a MOVE destination of the first content information;

a history information generating process of generating history information which indicates a history of each of the MOVE processing and the scramble processing;

a first judging process of judging whether or not an identifier of the second recording medium which is a reproduction object by said information reproducing apparatus is included in the identifier, which is stored in said identifier storing device, of the second recording medium which is the MOVE destination of the first content information;

an obtaining process of obtaining the history information if it is judged that the identifier of the second recording medium which is the reproduction object is included in the identifier of the second recording medium which is the MOVE destination of the first content information, by said judging process;

a content information generating process of generating the first content information on the basis of each of the scramble information and the scramble key which are specified by the history information; and

a reproducing process of reproducing the generated first content information.

18. A computer program product in a computer-readable medium for tangibly embodying a program of instructions executable by a computer provided in an information recording apparatus for performing MOVE processing of moving first content information of a first reproduction quality, which is recorded on a first recording medium, to a second recording medium, the information recording apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

a identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing to make the computer function as at least one portion of the scramble device, the identifier string device, and the history information generating device.

19. A computer program product in a computer-readable medium for tangibly embodying a program of instructions executable by a computer provided in an information reproducing apparatus for reproducing first content information which is moved onto a second recording medium by an information recording apparatus for performing MOVE processing of moving the first content information of a first reproduction quality, which is recorded on a first recording medium, to the second recording medium, said information recording apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information; and

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing, the information reproducing apparatus comprising;

a first judging device for judging whether or not an identifier of the second recording medium which is a reproduction object by said information reproducing apparatus is included in the identifier of the second recording medium which is the MOVE destination of the first content information, the identifier being stored in said identifier storing device;

a obtaining device for obtaining the history information if it is judged “

included”

by said judging device;

a content information generating device for generating the first content information on the basis of each of the scramble information and the scramble key which are specified by the history information; and

a reproducing device for reproducing the generated first content information to make the computer function as at least one portion of the first judging device, the obtaining device, the content information generating device, and the reproducing device.

20. A computer program product in a computer-readable medium for tangibly embodying a program of instructions executable by a computer provided in an information recording/reproducing apparatus for performing MOVE processing of moving first content information of a first reproduction quality, which is recorded on a first recording medium, to a second recording medium, the information recording/reproducing apparatus comprising:

a scramble device for performing scramble processing of scrambling the first content information on the basis of a predetermined scramble key, to thereby generate scramble information;

an identifier storing device for storing an identifier to identify the second recording medium which is a MOVE destination of the first content information;

a history information generating device for generating history information which indicates a history of each of the MOVE processing and the scramble processing;

a first judging device for judging whether or not an identifier of the second recording medium which is a reproduction object by said information reproducing apparatus is included in the identifier of the second recording medium which is the MOVE destination of the first content information, the identifier being stored in said identifier storing device;

an obtaining device for obtaining the history information if it is judged “

included”

by said judging device;

a content information generating device for generating the first content information on the basis of each of the scramble information and the scramble key which are specified by the history information; and

a reproducing device for reproducing the generated first content information to make the computer function as at least one portion of the scramble device, the identifier string device, the history information generating device, the first judging device, the obtaining device, the content information generating device, and the reproducing device.