Benchmarks for digital watermarking

Details Benchmarks for digital watermarking Benchmarks for digital watermarking

2009-10-20

2011-11-01

Zand, Kambiz (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S168000, C726S026000, C382S276000, C382S277000, C382S278000, C705S075000

Reexamination Certificate

active

08051295

ABSTRACT:
The presently claimed invention relates generally to digital watermarking of data, e.g., representing video or audio. One claim recites a method including: obtaining data representing video or audio; using a multi-purpose electronic processor programmed for: transforming the data into a transform domain, analyzing the transformed data to identify a plurality of transform coefficients according to predetermined criteria, and altering the identified plurality of transform coefficients to carry a digital watermark; and analyzing the data to determine a baseline state for the digital watermark. Of course, other combinations and claims are provided too.

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