Patent ID: 7777925

Claim:
A color adjustment apparatus, comprising: a calculation unit, for receiving an input color signal, and dividing the input color signal into color groups and performing a calculation operation thereon to generate and output at least two calculation signals; and an adjustment unit, coupling to the calculation unit and configured to receive as inputs the calculation signals and the input color signal, configured to obtain a first difference value between a first phase-angle value of a first color and a second phase-angle value of a second color, wherein the first color and the second color are a contrast/complement pair of a contrast/complement group of the input color signal, and to obtain a second difference value between the first difference value and a predetermined color value, and further configured to adjust at least one of the first phase-angle value of the first color and the second phase-angle value of the second color for compensating the second difference between the first difference value and the predetermined color value and to generate an output color signal, for input to a video display.