Cryptography – Video cryptography – Copy protection or prevention
Reexamination Certificate
2011-04-05
2011-04-05
Smithers, Matthew B (Department: 2437)
Cryptography
Video cryptography
Copy protection or prevention
C380S200000
Reexamination Certificate
active
07920701
ABSTRACT:
A digital content system is disclosed. A security engine disposed in a bridge provides cryptographic services. Clear text digital data received from a central processing unit is encrypted and transferred via the bridge over unsecured data paths as cipher text.
REFERENCES:
patent: 5249232 (1993-09-01), Erbes et al.
patent: 5818939 (1998-10-01), Davis
patent: 7096370 (2006-08-01), Klein
patent: 7114082 (2006-09-01), Klein
patent: 7474312 (2009-01-01), Rohrer et al.
patent: 7782329 (2010-08-01), Rohr et al.
patent: 2002/0073324 (2002-06-01), Hsu et al.
patent: 2003/0005295 (2003-01-01), Girard
patent: 2003/0084309 (2003-05-01), Kohn
patent: 2003/0126086 (2003-07-01), Safadi
patent: 2003/0142818 (2003-07-01), Raghunathan
patent: 2004/0075621 (2004-04-01), Shiuan et al.
patent: 2004/0075622 (2004-04-01), Shiuan et al.
patent: 2004/0205281 (2004-10-01), Lin et al.
patent: 2005/0005081 (2005-01-01), Ehama et al.
patent: 2005/0076228 (2005-04-01), Davis
patent: 2005/0078944 (2005-04-01), Risan et al.
patent: 2007/0088959 (2007-04-01), Cox et al.
patent: 1801725 (2007-06-01), None
patent: 2004-52304 (2004-06-01), None
patent: WO 98/27685 (1998-06-01), None
patent: WO 03/009115 (2003-01-01), None
patent: WO 2004/086228 (2004-10-01), None
patent: WO 2005/057535 (2005-06-01), None
Hitachi, Ltd., et al., “5C Digital Transmission Content Protection,” White Paper, Revision 1.0, Jul. 14, 1998, pp. 1-13.
Hitachi, Ltd., et al., “Digital Transmission Content Protection Specification vol. I (Informational Version),” Revision 1.3, Jan. 7, 2004, pp. 1-76.
PCI Express™ Base Specification Revision 1.1, Feb. 28, 2005, pp. 1-526.
Non-Final Office Action dated Apr. 13, 2009 for related U.S. Appl. No. 11/304,116, filed Dec. 14, 2005.
Cox Michael Brian
Langendorf Brian Keith
Moreton Henry Packard
Reed David G.
Cooley LLP
Nvidia Corporation
Sims Jing
Smithers Matthew B
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