System and method of retrieving a watermark within a signal

Details System and method of retrieving a watermark within a signal System and method of retrieving a watermark within a signal

2011-02-01

2011-02-01

Shiferaw, Eleni A (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S200000, C380S201000, C380S221000

Reexamination Certificate

active

07882357

ABSTRACT:
A system, method and computer readable medium that processing a watermarked signal using the phase Sk(f) of an original signal. The watermarked signal includes odd and even overlapped blocks where the watermark is contained in the even blocks. The method comprises test-decoding the watermarked signal and, if the watermarked signal contains errors, recoding the watermarked signal with a higher redundancy code. The steps of test-decoding and recording may be performed until all errors are corrected.

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