Methods and apparatus for feature recognition time shift correlation
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United States of America Patent
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Mar 7, 2006
Grant Date -
Jul 18, 2002
app pub date -
Jan 11, 2002
filing date -
Jan 12, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Methods and apparatus for feature recognition time shift correlation are presented. An exemplary method includes the step of identifying a feature in an input data stream. A starting time associated with the identified feature relative to a boundary of the input data stream is stored. A time interval until the identified feature is next repeated in the input data stream is then measured. Next, the measured time interval is compared to each of a set of valid interval values for the identified feature. A difference is then calculated between the stored starting time and a starting time associated with the identified feature relative to a boundary of a reference data sequence when the measured time interval matches one of the valid interval values. The calculated difference determines an amount that the input data stream must be time-shifted to achieve correlation with the reference data sequence.
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