Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2011-03-29
2011-03-29
Lipman, Jacob (Department: 2434)
Information security
Prevention of unauthorized use of data including prevention...
Access control
Reexamination Certificate
active
07917960
ABSTRACT:
To enable usage of content at a receiver which does not have a copying function even if copyright protection is provided. Model names of receivers not having a function enabling copying of content are held in an authentication processing circuit (151) of a transmitter (10). When a model name obtained from a connected receiver (40) is held, regardless of whether the content is copyright protected, a signal selection circuit (122) selects a terminal a side, a switch (123) is turned on, and an unencrypted signal is transmitted. When a change of the receiver (40) is detected by a hot plug detection function or a plug and play function at a processing circuit (152) during the transfer of a signal of copyright protected content without providing copyright protection, the selection circuit (122) is made to select a terminal b side or the switch (123) is turned off to suspend the transfer of the non-copyright protected signal. The information indicating the receiver is held in a tamper-proof updateable manner.
REFERENCES:
patent: 5659613 (1997-08-01), Copeland et al.
patent: 6314518 (2001-11-01), Linnartz
patent: 6678464 (2004-01-01), Kawai et al.
patent: 0 901 124 (1999-03-01), None
patent: 0 932 298 (1999-07-01), None
patent: 8 32952 (1996-02-01), None
patent: 8 65652 (1996-03-01), None
patent: 9-284748 (1997-10-01), None
patent: 10 174057 (1998-06-01), None
patent: 10 224752 (1998-08-01), None
patent: 10-290443 (1998-10-01), None
patent: 11-136618 (1999-05-01), None
patent: 11 136618 (1999-05-01), None
patent: 11 145840 (1999-05-01), None
patent: 11-149709 (1999-06-01), None
patent: 11 196114 (1999-07-01), None
patent: 11 196115 (1999-07-01), None
patent: 11 212462 (1999-08-01), None
patent: 11-243534 (1999-09-01), None
patent: 2000 23088 (2000-01-01), None
patent: 2000 23089 (2000-01-01), None
patent: 2000 57686 (2000-02-01), None
patent: 2000 59753 (2000-02-01), None
patent: 2000-76790 (2000-03-01), None
patent: WO 97 43761 (1997-11-01), None
patent: WO 97 43853 (1997-11-01), None
patent: WO 98 02881 (1998-01-01), None
patent: WO 99 53689 (1999-10-01), None
patent: WO 00 04713 (2000-01-01), None
“Content Protection System Architecture: A Comprehensive Framework for Content Protection, Revision 0.81” CPSA—A Comprehensive Framework for Content Protection, Feb. 17, 2000, XP002226101.
Hartrung and Girod: “Digital Watermarking of Raw and Compressed Video” Proceedings of the SPIE, SPIE, Bellingham VA, US, vol. 2952, Oct. 7, 1996, pp. 205-213, XP002085796 ISSN: 0277-786X.
Patent Abstracts of Japan vol. 1999, No. 11, Sep. 30, 1999 & JP 11 149709 A (Jisedai Joho Hoso System Kenkyusho:KK), Jun. 2, 2999 (1999-06-02).
Patent Abstracts of Japan, vol. 1999, No. 12, Oct. 29, 1999 & JP 11 196114 A (Canon Inc.), Jul. 21, 1999.
Patent Abstracts of Japan, vol. 1997, No. 11, Nov. 28, 1997 & JP 9 186965 A (Sony Corp.), Jul. 15, 1997.
Zhao J: “a www service to embed and prove digital copyright watermarks” 19960528; No. 2, May 28, 1996, pp. 695-709, XP000199921.
Fujii Asako
Kori Teruhiko
Frommer William S.
Frommer & Lawrence & Haug LLP
Lipman Jacob
Sony Corporation
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