Computer implemented method for compressing 24 bit pixels to 16 bit pixels
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United States of America Patent
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Apr 27, 1999
Issued Date -
N/A
app pub date -
Dec 17, 1996
filing date -
Feb 15, 1996
priority date (Note) -
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Abstract
A computer implemented method for compressing bit formats provided in a first packed data sequence. One embodiment of the method comprises the steps of generating, in response to executing a first instruction, a second packed data sequence by copying the first packed data sequence. A second step of masking, in response to executing a second instruction, a portion of the first packed data sequence. A third step of shifting data elements of the first packed data sequence, in response to executing a third instruction, wherein the data elements are independently shifted by separate shift counts. A fourth step of masking, in response to executing a fourth instruction, a portion of the second packed data sequence. A fifth step of generating, in response to executing a fifth instruction, a final result by joining the second and first packed data sequences.
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