Color table look-up having last value memory

Details Color table look-up having last value memory Color table look-up having last value memory

1998-02-05

2000-06-13

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

345199, 382167, G09G 504

Patent

active

060755148

ABSTRACT:
A system for correcting pixel color values, with each color value represented by a byte of data, includes applying look-up table correction to first, second, third, and fourth bytes of input color value data to obtain corresponding first, second, third, and fourth bytes of corrected output data, simultaneously comparing the first byte of input color value data to a fifth byte of input color value data, the second byte of input color value data to a sixth byte of input color value data, the third byte of input color value data to a seventh byte of input color value data, and the fourth byte of input color value data to an eighth byte of input color value data. The first, second, third, and fourth bytes of corrected output data are stored as outputs corresponding to the fifth, sixth, seventh, and eighth bytes of input color value data if all comparisons in the comparing step indicate equality, and look-up table correction is applied to obtain corrected output data corresponding to the fifth, sixth, seventh, and eighth bytes of input color value data if any of the comparisons in the comparing step indicate inequality.

REFERENCES:
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patent: 5633663 (1997-05-01), Matsubara et al.
patent: 5847700 (1998-12-01), Hannah

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