Method of analysing a compressed signal for the presence or absence of information content
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United States of America Patent
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Issued Date -
Jul 8, 2004
app pub date -
Dec 15, 2003
filing date -
Feb 9, 2001
priority date (Note) -
Abandoned
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Abstract
Compressed signals contain amplitude data (for example, scale factors in an MPEG frame) which can be examined to enable a decision to be taken on whether the signal contains information or not (e.g. silence in the case of audio or no image in the case of video).
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