Patent ID: 6985600
Filing Date: 2006-01-10
Classification: B29C,B41J,B41M,B42D,D21H,G03G,G06Q,G06T,G07C,G07D,G07F,G10L,G11B,H04B,H04N

Abstract:
1. A substrate to which final user printing can be later applied to yield a final printed object, characterized in that the substrate has been processed prior to final user printing to yield a steganographic digital watermark pattern thereon that does not impair subsequent use of the substrate, yet encodes multi-bit binary data, the presence of said multi-bit binary data not being apparent to a human observer of the substrate, said steganographic pattern being detectable by visible-light scanning of the substrate to yield data from which the multi-bit binary data can be recovered.