Motion estimator
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United States of America Patent
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Mar 26, 2013
Grant Date -
Feb 21, 2008
app pub date -
Jun 8, 2007
filing date -
Jun 12, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A motion estimator includes a shape, address and vector generator to produce control signals according to a selected size and shape of a search area comprising scan lines. A variable delay reads reference image data of a frame in which a matching macroblock is sought from a store under control of a variable delay control signal from the signal generator to align a current serial input stream of a current scan line with a serial input stream of an immediately preceding scan line. The aligned reference image pixel data is matched against pixel data of a current macroblock using a vector from the signal generator to produce a score representing a quality of the match. A best score together with the corresponding best vector is recorded and the best vector output.
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