Detection of media links in broadcast signals
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United States of America Patent
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Jul 13, 2010
Grant Date -
Nov 13, 2008
app pub date -
Jul 29, 2008
filing date -
Jan 7, 1999
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A detection apparatus includes a tuner tuned to the program and a meter coupled to the tuner and arranged to detect content ancillary information from the program tuned by the tuner. The content ancillary information may be a media link, closed captioning information, or the like. The meter may also be arranged to extract a broadcast signature from the program. A comparator compares the broadcast signature to a reference signature selected from a library of reference signatures based upon the content ancillary information. Broadcast signatures from unknown programs may be clustered at least partially on the basis of the content ancillary information.
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