Method, apparatus and programs for generating and utilizing content signatures
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United States of America Patent
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Oct 30, 2007
Grant Date -
Sep 12, 2002
app pub date -
Dec 19, 2001
filing date -
Dec 21, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to deriving and utilizing content signatures. A content signature is a representation of a content item, which is derived from the content item itself. According to the invention, a method of generating a content signature for a signal is provided. The method includes the steps of: i) dividing the signal into at least one set; ii) transforming the set into a frequency-based domain; iii) determining features of the transformed set; and iv) grouping the features so as to form a content signature of the set.
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