Unauthorized contents detection system

Details Unauthorized contents detection system Unauthorized contents detection system

2005-03-24

2009-06-16

Revak, Christopher A (Department: 2431)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C713S179000, C713S180000, C713S181000, C380S251000, C380S259000, C707S793000, C707S793000

Reexamination Certificate

active

07549061

ABSTRACT:
An executing device for conducting playback is high during the playback of contents. The executing device is equipped with a highly efficient processor and reduces the processing load involved in verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on a DVD. In addition, the executing device is capable of improving the accuracy of detecting unauthorized contents by randomly selecting a predetermined number of encrypted units every time the verification is performed.

REFERENCES:
patent: 4933969 (1990-06-01), Marshall et al.
patent: 6470329 (2002-10-01), Livschitz
patent: 6480961 (2002-11-01), Rajasekharan et al.
patent: 6574676 (2003-06-01), Megiddo
patent: 6629198 (2003-09-01), Howard et al.
patent: 6931537 (2005-08-01), Takura et al.
patent: 2002/0004906 (2002-01-01), Rajasekharan et al.
patent: 2003/0023856 (2003-01-01), Horne et al.
patent: 2003/0231568 (2003-12-01), Ohhashi
patent: 2003/0233514 (2003-12-01), Honig
patent: 2005/0086241 (2005-04-01), Ram et al.
patent: 0 781 003 (1997-06-01), None
patent: 0 913 757 (1999-05-01), None
patent: 1 056 010 (2000-11-01), None
patent: 63-255840 (1988-09-01), None
patent: 3-151738 (1991-06-01), None
patent: 2001-142398 (2001-05-01), None
patent: 2001-265217 (2001-09-01), None
patent: 2003-318887 (2003-11-01), None
patent: 2005-094146 (2005-04-01), None
patent: 2006-033729 (2006-02-01), None
patent: 01/82267 (2001-11-01), None
European Search Report issued Dec. 18, 2007 in European Patent Application No. 07 11 2868.
Jens Palsberg et al., “Experience with Software Watermarking”, Computer Security Applications, ACSAC, 16th Annual Conference, IEEE Comput. Soc., pp. 308-316, XP010529828, ISBN: 0-7695-0859-6, Dec. 11, 2000.
European Search Report issued Jan. 10, 2008 in the corresponding European application.
Horne et al., “Dynamic Self-Checking Techniques for Improved Tamper Resistance”, Lecture Notes in Computer Science, vol. 2320, pp. 141-159, 2002.
Japanese Office Action dated Oct. 23, 2007 issued in Japanese Application No. 2006-519466 (with translation).

Affiliated with

Also associated with

Rating

Unauthorized contents detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Unauthorized contents detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unauthorized contents detection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4070640