Apparatus and methods to process video or audio
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United States of America Patent
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Sep 20, 2011
Grant Date -
Oct 16, 2008
app pub date -
Apr 15, 2008
filing date -
Oct 21, 1994
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The presently claimed invention relates generally to video or audio data. One claim recites an apparatus. The apparatus includes an input to receive data associated with video or audio; a decoder to analyze the data associated with video or audio for a steganographic signal hidden therein, the steganographic signal hidden in data representing video picture elements or in data representing audio elements; an extractor to extract an identifier from the data associated with video or audio; a generator to provide a signal based at least in part on a result produced by said decoder and said extractor; and an output to output the signal. Of course, other combinations are provided and claimed as well.
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