Method and apparatus for producing a signature characterizing an interval of a video signal while compensating for picture edge shift
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United States of America Patent
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Nov 5, 1996
Issued Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Apr 30, 1992
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Signatures are produced for characterizing an interval of a video signal representing a picture for use in broadcast segment recognition. The signature is produced based on portions of the video signal representing corresponding regions of the picture each spaced by a certain amount from a nominal edge of the picture. A shift in the video signal corresponding with a shift in the edge of the picture from a nominal edge of the picture is detected. The portions of the video signal are adjusted to compensate for the shift in the edge of the picture and a signature is produced based on the adjusted portions of the video signal.
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