MOTION COMPENSATION WITH MOVING WINDOW
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United States of America Patent
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Issued Date -
May 28, 2015
app pub date -
Nov 26, 2013
filing date -
Nov 26, 2013
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Abstract
A video encoder employs a relatively small sized cache for motion compensation. A motion search module selects an initial subset of the full reference picture and has it transferred to the cache. For a first set of blocks of a current picture, the motion search module calculates a set of motion vectors using the reference picture subset stored at the cache. Based on the set of motion vectors, the motion search module identifies an offset that indicates a predicted direction of motion. Based on the offset, the motion search module identifies another subset of the reference picture and transfers the identified subset to the cache for calculation of the next set of motion vectors.
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