Patent ID: 6034665
Filing Date: 2000-03-07
Classification: G06F,G09G,H04N

Abstract:
A method of adjusting color of a video display apparatus for displaying an image by means of RGB video signals from a host, comprising the steps of:(a) calculating a mean luminance value L from a maximum luminance value MAX.sub.L and a minimum luminance value MIN.sub.L of the display apparatus;(b) receiving hue and saturation data Hue and Sat generated in accordance with a keypress associated with hue and saturation adjustments, wherein the saturation data Sat denotes a distance from a white point on an X-Y chromaticity coordinate system of the display apparatus to a chromaticness point on the coordinate system, and the hue data Hue denotes an angle made by a first line connecting a red point on the coordinate systems and the white point with a second line connecting the white point and the chromaticness point;(c) transforming the hue and saturation data Hue and Sat into RGB control data Red, Green and Blue by hue and saturation conversions; and(d) controlling gains and DC biases of the RGB video signals on the basis of the RGB control data Red, Green and Blue.