Decoding of watermarked information signals

Details Decoding of watermarked information signals Decoding of watermarked information signals

2003-02-26

2009-06-09

Simitoski, Michael J (Department: 2434)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C380S201000, C380S252000, C382S100000, C726S032000

Reexamination Certificate

active

07546466

ABSTRACT:
Method and apparatus are described for compensating for time offset in a received signal, so as to correctly align the frame sequence of a received signal to a sequence of transmitted symbols. Each symbol extends over Tssignal samples. The received signal is first divided into a sequence of frames of length Ts, and then each framedivided into a multiplicity of Nbsub-frames. Subsequently, Nbsequences of values are formed, where every successive value in each sequence is derived from the corresponding sub-frame within each successive frame. Each of the Nbsequences is an estimate for the correctly aligned sequence of transmitted symbols.

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van der Veen, Michiel et al. “Robust, Multi-functional and High-quality Audio Watermarking Technology”, May 12-15, 2001.
Bassie, Paraskevi et al. “Robust Audio Watermarking in the Time Domain”, 2001 IEEE.

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