Method and system for performing two-dimensional transform on data value array with reduced power consumption
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United States of America Patent
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Mar 4, 2014
Grant Date -
Apr 29, 2010
app pub date -
Dec 30, 2009
filing date -
Aug 25, 2006
priority date (Note) -
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Abstract
A method and system for performing a 2D transform is disclosed. The 2D transform may include a row transform and/or a column transform. When performing the row or column transform, it may be determined whether each of different subsets of the data values including a partition of a row or column includes at least one zero value, whether each of different subsets of a first subset of the partition includes at least one zero value, and whether each of different subsets of at least one other subset of the partition includes at least one zero value. When performing the row or column transform, at least one transformation operation on at least one zero value may be bypassed or performed in a reduced-power manner, where such transformation operation would otherwise be performed in a manner consuming full power if the zero value were a non-zero value.
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