Patent ID: 7583318

Claim:
A method for converting input image signals into image signals that can be displayed in an image display device, the method comprising: converting color components of the input image signals and color components that can be displayed in the image display device into color space, respectively; comparing a converted color gamut with each other to calculate a hue control variable; and controlling hues of the input image signals using the hue control variable, wherein the comparing operation includes: obtaining hue and luminance corresponding to the maximum chromaticity of the input image signals and hue and luminance corresponding to the maximum chromaticity of the image signals that can be displayed in the image display device, from the converted color gamut; and calculating the hue control variable using the obtained hue and luminance, and wherein the hue control variable is a distance of the hue of the input image signal to coincide hue of the color coordinates having the maximum luminance of the input image signals with hue of the color coordinates having the maximum luminance of the image signals that can be displayed in the image display device.