Reproducing apparatus, recording apparatus and display apparatus

• US 7,043,645 B2
• Filed: 05/14/2003
• Issued: 05/09/2006
• Est. Priority Date: 04/14/1998
• Status: Expired due to Term

• Current Assignee: Hitachi Consumer Electronics Company Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi, Ltd.
• Inventors: Yoshiura, Hiroshi, Takeuchi, Toshifumi, Arai, Takao, Kimura, Hiroyuki, Kawamae, Osamu
• Primary Examiner(s): Wright, Norman M.
• Application Number:
  US10/437,232
• Publication Number:
  US 20030200461A1
• Time in Patent Office: 1,091 Days
• Field of Search: 713/200, 713/201, 713/190, 713/193, 350/63, 350/201, 380/55, 380/54, 380/26, 380/27, 705/57, 705/52, 705/51
• US Class Current: 713/168
• 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 20/00195 using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00224 wherein the key is obtained from a remote server
• CPC Class Codes: G11B 20/00304 the key being stored in the lead-in area [LIA]
• CPC Class Codes: G11B 20/00449 content scrambling system [CSS]
• CPC Class Codes: G11B 20/00739 wherein the usage restriction is associated with a specific geographical region
• CPC Class Codes: G11B 20/00753 wherein the usage restriction limits the number of copies that can be made, e.g. CGMS, SCMS, or CCI flags
• 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 20/00884 involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm
• CPC Class Codes: H04K 1/00 Secret communication
• CPC Class Codes: H04L 2209/603 Digital right managament [DRM]
• CPC Class Codes: H04L 9/32 including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
• 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 2005/91335 the copy protection signal being a watermark
• CPC Class Codes: H04N 2005/91364 the video signal being scrambled
• CPC Class Codes: H04N 21/4367 Establishing a secure communication between the client and a peripheral device or smart card
• CPC Class Codes: H04N 21/4405 involving video stream decryption
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus
• CPC Class Codes: H04N 5/77 : between a recording apparatus and a television camera
• CPC Class Codes: H04N 5/775 : between a recording apparatus and a television receiver
• 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 9/8042 : involving data reduction

Abstract

A reproducing apparatus for reproducing data from a recording medium and supplying the data to an external apparatus for recording of the data. The reproducing apparatus has a plurality of authenticators for authenticating the external apparatus and the reproducing apparatus selects an authenticator corresponding to a type of the data reproduced from the recording medium and conducts authentication with the external apparatus. After authentication is confirmed, the reproducing apparatus sends the data to the external apparatus to record the data by the external apparatus.

Claims

1. A reproducing apparatus for supplying data reproduced from a recording medium for recording of said data, said reproducing apparatus having a plurality of scrambling means and a plurality of authenticating means,

wherein a scrambling means corresponding to a type of said data reproduced from said recording medium is selected from among said plurality of scrambling means, and the data reproduced from said recording medium is scrambled with said selected scrambling means to produce scrambled data, and

wherein an authenticating means corresponding to said scrambled data is selected from among said plurality of authenticating means to authenticate with said external apparatus, and after the authentication is confirmed, said scrambled data is outputted to said external apparatus.

2. A data recording apparatus for receiving and recording data reproduced from a recording medium by a reproducing apparatus and supplied from said reproducing apparatus, wherein said data recording apparatus comprising a plurality of de-scrambling means and a plurality of authenticating means, wherein said data recording apparatus uses a de-scrambling means corresponding to a type of the data reproduced from said recording medium and de-scrambles a scrambled data from said reproducing apparatus, said data recording apparatus uses an authenticating means corresponding to said data so that authentication is conducted with said reproducing apparatus, and wherein after authentication is confirmed, said data recording apparatus receives said data supplied from said reproducing apparatus and records said data.

3. A recording and reproducing system having at least two apparatus selected from a data recording and reproducing apparatus and a data reproducing apparatus, said at least two apparatus for reproducing and recording data by sending and receiving the data to and from each other based on authentication with each other, wherein each apparatus of said at least two apparatus each includes a plurality of scrambling and/or de-scrambling means and a plurality of authenticating means, wherein said each apparatus selects a scrambling and/or de-scrambling means corresponding to a type of said data and scrambles/de-scrambles said data with said selected scrambling and/or de-scrambling means, and said each apparatus selects an authenticating means which corresponds to a type of scrambled data, and wherein said each apparatus has said selected authenticating means conduct authentication with each other to validate scrambling/de-scrambling of said data.

4. A recording and reproducing system according to claim 3, wherein said authentication is conducted by software.

5. A recording and reproducing system according to claim 4, wherein said authentication is conducted by a program which integratedly controls said at least two apparatus.

6. A recording and reproducing system according to claim 3, wherein one of said plurality of scrambling means is selected based on information for indicating a data type of said data, said data type including one of a video signal, an audio signal, a still picture signal, a program code and other data.

7. A recording and reproducing system according to claim 3, wherein one of said plurality of scrambling means is selected based on information for controlling a copying operation contained in said data.

8. A recording and reproducing system according to claim 3, wherein at least one of said at least two apparatus is an apparatus utilizing a replaceable recording medium.

9. A recording and reproducing system according to claim 8, wherein one of said plurality of scrambling means is selected based on information indicating a type of said recording medium.

10. A recording and reproducing system according to claim 3, wherein at least one of said at least two apparatus is an apparatus utilizing a non-replaceable recording medium.

11. A recording and reproducing system according to claim 10, wherein one of said plurality of scrambling means is selected based on information indicating a type of said recording medium.

12. A recording and reproducing system according to claim 3, wherein said at least two apparatus are in a non-replaceable combination, and a de-scrambling key corresponding to a scrambling of said data is sent and received between said at least two apparatus.

13. A display apparatus for receiving and displaying data derived from inputted data inputted from an outputting apparatus, said display apparatus comprising a plurality of de-scrambling means and a plurality of authenticating means, wherein a de-scrambling means corresponding to a type of said inputted data is selected from among said plurality of de-scrambling means to de-scramble the inputted data, and an authenticating means corresponding to a type of said inputted data authenticates with the outputting apparatus that supplies said inputted data, and after the authentication is confirmed, said display apparatus receives said inputted data inputted from said outputting apparatus and displays said data.

14. A display apparatus according to claim 13, wherein said display apparatus and said outputting apparatus which supplies said inputted data each include a plurality of de-scrambling means, and wherein ones of said plurality of de-scrambling means are selected based on information for indicating a data type including one of a video signal, an audio signal, a still picture signal, a program code and other data.

15. A display apparatus according to claim 13, wherein said display apparatus and said outputting apparatus which supplies said inputted data each include a plurality of de-scrambling means, and wherein ones of said plurality of de-scrambling means are selected based on information for controlling a copying operation contained in said data.

16. A display apparatus for receiving scrambled data corresponding to data reproduced from a recording medium by a data reproducing apparatus and displaying said data, said display apparatus comprising a plurality of de-scrambling means and a plurality of authenticating means, wherein a de-scrambling means corresponding to a type of said data reproduced from said recording medium is selected from among said plurality of de-scrambling means to de-scramble said scrambled data, and an authenticating means corresponding to said type of data authenticates with said data reproducing apparatus, and after authentication is confirmed, said display apparatus receives said scrambled data supplied from said data reproducing apparatus and displays said data.

17. A display apparatus according to claim 16, wherein said display apparatus and said data reproducing apparatus which supplies said scrambled data each include a plurality of de-scrambling means, and wherein ones of said plurality of de-scrambling means are selected based on information for indicating a type of a recording medium contained in said data.

18. A display apparatus according to claim 16, wherein said display apparatus and said data reproducing apparatus which supplies said scrambled data each include a plurality of de-scrambling means, and wherein ones of said plurality of de-scrambling means are selected based on a combination of information for indicating a type of a recording medium contained in said data and information for controlling a copying operation.

19. A display apparatus according to claim 18, wherein said information for indicating a type of a recording medium includes information for indicating the recording medium is one of a reproduction-dedicated recoding medium and a recordable recording medium, and said information for controlling a copying operation includes information for indicating if the data is one of copy-free, copy-prohibited, and copy-permitted for one generation.

20. A display apparatus according to claim 18, wherein the combination of information includes the combination of three kinds of information including (1) the information for indicating the medium is reproduction-dedicated, (2) the information for indicating the medium is recordable and if the data is one of copy-prohibited and copy-permitted for just one generation, and (3) the information for indicating the medium is recordable and the data is copy-free.

21. A recording and reproducing method in a recording and reproducing system having at least two apparatus selected from a data recording and reproducing apparatus and a data reproducing apparatus, said at least two apparatus for recording and/or reproducing data by sending and receiving said data to and from each other based on authentication with each other, wherein said at least two apparatus each include a plurality of de-scrambling means, wherein said method is such that each of said at least two apparatus uses a scrambling and/or de-scrambling means that corresponds to a type of said data and said at least two apparatus authenticate with each other.

22. A de-scrambling apparatus for receiving scrambled data inputted thereto and reproducing data of said scrambled data, comprising:

a plurality of de-scrambling means for de-scrambling said scrambled data, and

means for reproducing the de-scrambled data de-scrambled by said de-scrambling means, wherein a de-scrambling means corresponding to a type of said scrambled data is selected from among said plurality of de-scrambling means based on said data and de-scrambles said scrambled data,

wherein one of said plurality of de-scrambling means is selected based on information for indicating a data type of said data, said data type including one of a video signal, an audio signal, a still picture signal, a program code and other data.

23. A de-scrambling apparatus for receiving scrambled data inputted thereto and reproducing data of said scrambled data, comprising:

a plurality of de-scrambling means for de-scrambling said scrambled data, and

means for reproducing the de-scrambled data de-scrambled by said de-scrambling means, wherein a de-scrambling means corresponding to a type of said scrambled data is selected from among said plurality of de-scrambling means based on said data and de-scrambles said scrambled data,

wherein one of said plurality of de-scrambling means is selected based on information for controlling a copying operation contained in said data.

24. A de-scrambling apparatus for receiving scrambled data inputted thereto and reproducing data of said scrambled data, comprising:

a plurality of de-scrambling means for de-scrambling said scrambled data, and

means for reproducing the de-scrambled data de-scrambled by said de-scrambling means, wherein a de-scrambling means corresponding to a type of said scrambled data is selected from among said plurality of de-scrambling means based on said data and de-scrambles said scrambled data,

wherein one of said plurality of de-scrambling means is selected based on information contained in said data for indicating a type of a recording medium.

25. A de-scrambling apparatus for receiving scrambled data inputted thereto and reproducing data of said scrambled data, comprising:

a plurality of de-scrambling means for de-scrambling said scrambled data, and

means for reproducing the de-scrambled data de-scrambled by said de-scrambling means, wherein a de-scrambling means corresponding to a type of said scrambled data is selected from among said plurality of de-scrambling means based on said data and de-scrambles said scrambled data,

wherein one of said plurality of de-scrambling means is selected based on a combination of information contained in said data for indicating a type of a recording medium and information for controlling a copying operation.

26. A de-scrambling apparatus for receiving scrambled data inputted thereto and reproducing data of said scrambled data, comprising:

a plurality of de-scrambling means for de-scrambling said scrambled data, and

means for reproducing the de-scrambled data de-scrambled by said de-scrambling means, wherein a de-scrambling means corresponding to a type of said scrambled data is selected from among said plurality of de-scrambling means based on said data and de-scrambles said scrambled data,

wherein said information for indicating a type of a recording medium includes information for indicating whether the recording medium is a reproduction-dedicated recording medium and a recordable recording medium, and said information for controlling a copying operation includes information for indicating if the data is one of copy-free, copy-prohibited, or copy-permitted for one generation.