Patent ID: 8300071

Claim:
A method for generating a gamma table, applied to a display, the display obtaining n-bit corrected gray levels [y 2 (1), . . . , y 2 (2 m )] from m-bit original gray levels [x(1), . . . , x(2 m )] by using the gamma table, m and n being positive integers, the method comprising: (a) calculating a plurality of correction reference values [y 1 (1), . . . , y 1 (2 m )] corresponding to the original gray levels [x(1), . . . , x(2 m )] according to a first gamma curve; (b) calculating the corrected gray levels [y 2 (1), . . . , y 2 (2 m )] corresponding to the original gray levels [x(1), . . . , x(2 m )] according to a second gamma curve; and (c) respectively calculating differences {(y 1 (i)−y 2 (i)), i=1˜(2 m −1)} or {(y 2 (i)−y 1 (i)), i=1˜(2 m −1)} of the correction reference values [y 1 (1), . . . , y 1 (2 m )] and the corresponding corrected gray levels [y 2 (1), . . . , y 2 (2 m )] and recording the differences as a plurality of gamma reference values z(i) (i=1˜(2 m −1)) corresponding to the original gray levels x(i) in order to generate the gamma table.