paratus and method, and medium including a program for executing the method recorded thereonUS6792130Dec 13, 2000Sep 14, 2004Eastman Kodak CompanySystem and method for embedding a watermark signal that contains message data in a digital imageUS6792542 *Nov 8, 2000Sep 14, 2004Verance CorporationDigital system for embedding a pseudo-randomly modulated auxiliary data sequence in digital samplesUS6795