Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1996-12-10
1998-11-24
Saras, Steven J.
Computer graphics processing and selective visual display system
Display peripheral interface input device
345150, 348577, 348599, H04N 967
Patent
active
058414223
ABSTRACT:
In a method and apparatus for reducing the number of matrix operations when converting digitized RGB color space signals to digitized YCbCr color space signals, at least two color difference signals, each being in terms of any two of the digitized RGB color space signals, are generated before performing first, second, third and fourth matrix multiplication operations of the color difference signals. The first and second matrix multiplication operations have first and second results to be used in conversion for the digitized Y color space signal. The third matrix multiplication operation has a third result to be used in conversion for the digitized Cb color space signal. The fourth matrix multiplication operation has a fourth result to be used in conversion for the digitized Cr color space signal.
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patent: 5124688 (1992-06-01), Rumball
patent: 5504821 (1996-04-01), Kanamori et al.
patent: 5510852 (1996-04-01), Shyu
patent: 5541658 (1996-07-01), Ishiwata
Kovalick Vincent E.
Saras Steven J.
Winbond Electronics Corp.
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