Copy protection for optical discs

Details Copy protection for optical discs Copy protection for optical discs

2001-07-26

2008-12-09

Moise, Emmanuel L (Department: 2137)

Information security

Prevention of unauthorized use of data including prevention...

Access control

C380S203000, C360S135000

Reexamination Certificate

active

07464411

ABSTRACT:
A method of copy protecting optical discs uses the differences in capability between the encoder associated with a laser beam recorder and that in currently available CD writers. Digital sum value (DSV) is a property of the encoded data on CDs and an encoder, which controls a laser beam recorder may be able to choose a pattern of merge bits which result in the overall DSV having optimal properties. During mastering of a CD, data patterns are added to the disc to provide an authenticating signature. These data patterns are chosen to cause DSV problems. Currently available CD writers have been found to have difficulty writing an authenticating signature of the type described without producing a resulting CD which has severe readability problems. Thus, the copy disc written by the CD writer will result in a CD reader returning corrupted data or information signalling a read error.

REFERENCES:
patent: 4603413 (1986-07-01), Sinjou et al.
patent: 5659613 (1997-08-01), Copeland et al.
patent: 5699434 (1997-12-01), Hogan
patent: 5703858 (1997-12-01), Mitchell et al.
patent: 5748119 (1998-05-01), Ko
patent: 5787068 (1998-07-01), Arps et al.
patent: 5828754 (1998-10-01), Hogan
patent: 5832088 (1998-11-01), Nakajima et al.
patent: 6028936 (2000-02-01), Hillis
patent: 6076165 (2000-06-01), Maenza
patent: 6278386 (2001-08-01), Hogan
patent: 6317397 (2001-11-01), Deguchi et al.
patent: 6353890 (2002-03-01), Newman
patent: 6421750 (2002-07-01), Gunther et al.
patent: 6665240 (2003-12-01), Kobayashi et al.
patent: 6694023 (2004-02-01), Kim
patent: 6782190 (2004-08-01), Morito
patent: 6839312 (2005-01-01), Heylen et al.
patent: 6966002 (2005-11-01), Torrubia-Saez
patent: 7030788 (2006-04-01), Aida et al.
patent: 2001/0011237 (2001-08-01), Tanaka et al.
patent: 2002/0076046 (2002-06-01), Heylen
patent: 2005/0163315 (2005-07-01), Jackson et al.
patent: 2005/0193313 (2005-09-01), Heylen et al.
patent: 2005/0226412 (2005-10-01), Selve et al.
patent: 0 347 934 (1989-12-01), None
patent: 0 347 934 (1989-12-01), None
patent: 0 347 934 (1989-12-01), None
patent: 0 791 923 (1997-08-01), None
patent: 0 854 482 (1998-07-01), None
patent: 0 854 482 (1998-07-01), None
patent: 0918326 (1999-05-01), None
patent: 1011103 (2000-06-01), None
patent: 1355306 (2003-10-01), None
patent: 1 396 857 (2004-03-01), None
patent: 1418584 (2004-05-01), None
patent: 1 494 235 (2005-01-01), None
patent: 1505598 (2005-02-01), None
patent: 1521262 (2005-04-01), None
patent: 2397687 (2004-07-01), None
patent: 2 369 718 (2004-08-01), None
patent: 2002-175662 (2002-06-01), None
patent: WO-98/02885 (1998-01-01), None
patent: WO-98/54713 (1998-12-01), None
patent: WO-98/57413 (1998-12-01), None
patent: WO-00/74053 (2000-12-01), None
patent: WO-02/11136 (2002-02-01), None
patent: WO-03/085668 (2003-10-01), None
patent: WO-2004/066294 (2004-08-01), None
patent: WO-2004/075185 (2004-09-01), None
patent: WO-2004/075186 (2004-09-01), None
Menezes, Alfred, Handbook of Applied Cryptography, 1997, pp. 20-23.
Menezes, Alfred et al. “Handbook of Applied Cryptography,” CRC Press LLC 1997, p. 275.
Kalker, T. (Jun. 7, 1999). “System Issues in Digital Image and Video Watermarking for Copy Protection,” Multimedia Computing and Systems 1999, IEEE International Conference in Florence, Italy on Jun. 7-11, 1999, Los Alamitos, CA,USA IEEE Comput.Soc., pp. 562-567.
Schouhamer Immink, K.A. (Aug. 1, 1995). “EFMPlus: The Coding Format of the Multimedia Compact Disc”,IEEE Transactions on Consumer Electronics, IEEE Inc., New York, US, 41(3):491-497.
European Search Report dated Feb. 25, 2005 for EP patent application No. 05 00 0302, 2 pages.
GB Examination Report for GB Application No. 0401496.5 dated May 19, 2005, one page.
GB Examination Report for GB Application No. 0403721.4 dated Jun. 9, 2005, one page.
International Search Report mailed on Oct. 10, 2001 for PCT Application No. PCT/GB01/03364 filed on Jul. 26, 2001, two pages.

Affiliated with

Also associated with

Rating

Copy protection for optical discs does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Copy protection for optical discs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copy protection for optical discs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4025505