Patent ID: 6753930
Filing Date: 2004-06-22
Classification: H04N

Abstract:
A color reproduction correction circuit for color representation that corrects color distortion caused when color input video signals using a first combination of three primary colors are reproduced on a color display that has light sources of a second combination of the primary colors with chromaticity values that differ from those of the first combination, the color reproduction correction circuit having a color correction circuit that corrects at least a part of each color signal among a plurality of color signals of the color input video signals, the color correction circuit comprising:a color mixing multiplier that multiplies the color signal in question by the specified coefficients of the first combination and outputs the mixed color signal; and an adder that adds the mixed color signal to color signals other than the color signal in question, wherein the mixed colors of the color signal in question and color signals other than the color signal in question in the second combination of the primary color light sources are used as primary color light sources in the second combination, and the specified coefficients of the first combination are determined with the mixed color light sources having coordinates approximately the same as coordinates of the primary color light sources of the first combination in a chromaticity diagram.