Embedding auxiliary data in a signal

Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique

Reexamination Certificate

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C382S100000

Reexamination Certificate

active

09423273

ABSTRACT:
A method is disclosed for embedding auxiliary data in a signal. The data is encoded into the relative position or phase of one or more basic watermark patterns. This allows multi-bit data to be embedded by using only one or a few distinct watermark patterns.

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patent: 6553127 (2003-04-01), Kurowski
Busch et al., :Digital Watermarking: From Concepts to Real-Time Vdeo Applications, IEEE Computer Graphics and Applications, Jan./Feb. 1999, pp. 25-35.

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