Watermark system

Details Watermark system Watermark system

2007-04-03

2007-04-03

Sheikh, Ayaz (Department: 2131)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C382S232000, C382S100000, C380S269000, C380S054000, C380S201000, C380S203000, C380S217000

Reexamination Certificate

active

11053407

ABSTRACT:
A method for examining an electronic representation of an item for a watermark, the method including examining at least a first electronic representation of an item for a watermark in accordance with a first watermark definition, receiving a signal indicating that a second watermark definition is to be used for examining electronic representations, and examining at least a second electronic representation of an item for a watermark in accordance with the second watermark definition.Related apparatus and methods are also provided.

REFERENCES:
patent: 5606609 (1997-02-01), Houser et al.
patent: 5607188 (1997-03-01), Bahns et al.
patent: 5613214 (1997-03-01), Kamachi et al.
patent: 5636292 (1997-06-01), Rhoads
patent: 5659726 (1997-08-01), Sandford, II et al.
patent: 5664018 (1997-09-01), Leighton
patent: 5680458 (1997-10-01), Spelman et al.
patent: 5687236 (1997-11-01), Moskowitz et al.
patent: 5933798 (1999-08-01), Linnartz
patent: 6229924 (2001-05-01), Rhoads et al.
patent: 6272634 (2001-08-01), Tewfik et al.
patent: 6314518 (2001-11-01), Linnartz
patent: 6332194 (2001-12-01), Bloom et al.
patent: 6374036 (2002-04-01), Ryan et al.
patent: 6442285 (2002-08-01), Rhoads et al.
patent: 6493457 (2002-12-01), Quackenbush et al.
patent: 6591365 (2003-07-01), Cookson
patent: 0 600 646 (1994-06-01), None
patent: 0 651 554 (1995-05-01), None
patent: 0 903 943 (1999-03-01), None
patent: 96/41468 (1996-12-01), None
patent: 97/13248 (1997-04-01), None
patent: 97/22206 (1997-06-01), None
patent: 97/26732 (1997-07-01), None
patent: 97/26733 (1997-07-01), None
patent: 97/34391 (1997-09-01), None
patent: 98/02864 (1998-01-01), None
patent: 98/03014 (1998-01-01), None
patent: 99/18723 (1999-04-01), None
Macrovision Corporation and Digimarc Corporation,Project DigiLock—The Digital Content Protection Solution for Copy Control and Play Control and Play-C, Fall 1997, pp. 1-24, USA.

Affiliated with

Also associated with

Rating

Watermark 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 Watermark system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Watermark system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3783784