Patent ID: 8547392

Claim:
A signal processing apparatus, comprising: a correction block to receive grayscale data comprising achromatic color grayscale data or chromatic color grayscale data and to create corrected grayscale data, wherein the correction block comprises: a first correction block to receive the achromatic color grayscale data of the grayscale data and comprising a one-dimensional lookup table to create corrected achromatic color grayscale data based on the received achromatic color grayscale data, and a second correction block comprising a three-dimensional lookup table to store a portion of the chromatic color grayscale data, and an interpolator to correct, through an interpolation scheme, a remaining portion of the chromatic color grayscale data based on the corrected achromatic color grayscale data, the second correction block being configured to create corrected chromatic color grayscale data using the three-dimensional lookup table and the interpolator; and a division correction block to receive the corrected achromatic color grayscale data from the first correction block or to receive the corrected chromatic color grayscale data from the second correction block, the division correction block to divide the corrected achromatic color grayscale data or the corrected chromatic color grayscale data into red, green, and blue driving signals.