Patent ID: 7236181

Claim:
A method for converting an input color being in a RGB color space to an output color being in RGB color space, the method comprising: looking up a first color element of the input color in a first lookup table to generate a first converted color element; wherein the first color element and the first converted color element belong to the same color component; looking up a second color element of the input color in a second lookup table to generate a second converted color element; wherein the second color element and the second converted color element belong to the same color component; converting a third color element to generate a third converted color element by gamma correction circuit; wherein the third color element and the third converted color element belong to the same color component; wherein one of the color elements of output color is dependent to the first, second and third converted color elements; the first, second and third converted color elements respectively belong to different color components; the color component is one component of RGB; and RGB including R,G, and B components respectively representing red, green, and blue colors.