Patent ID: 8199163

Claim:
A signal processing device comprising: a memory storing a first color correction data a second color correction data having a fewer number of bits than the first color correction data; a bit expander receiving the second color correction data and expanding the second color correction data to a third color correction data having a number of bits equal to the number of bits of the first color correction data using a linear interpolation; and a color corrector receiving an input image data, correcting the input image data corresponding to a first gray-scale range with reference to the first color correction data, and correcting the input image data corresponding to a second gray-scale range with reference to the third color correction data to generate an output image data, wherein the second gray-scale range is higher than the first gray-scale range, wherein the second color correction data comprises a color correction data having M-bits and a color correction data having L-bits (L is a natural number smaller than M) and, wherein the second gray-scale range comprises an intermediate gray-scale range and a high gray-scale range having a gray-scale level higher than a gray-scale level of the intermediate gray-scale range, the M-bit color correction data serves as a color correction data of the input image data corresponding to the intermediate gray-scale range, and the L-bit color correction data serves as a color correction data of the input image data corresponding to the high gray-scale range.