Patent ID: 6940559

Claim:
A color reproduction correction method 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 method correcting at least a part of each color signal among a plurality of color signals of the color input video signals, the color reproduction correction method comprising: multiplying the color signal in question by specified coefficients of the first combination to produce a mixed color signal; adding the mixed color signal to color signals other than the color signal in question; using 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 as primary color light sources in the second combination; and determining the specified coefficients of the first combination 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.