Gamma correction D/A converter, source driver integrated...

Details Gamma correction D/A converter, source driver integrated... Gamma correction D/A converter, source driver integrated...

2005-09-27

2005-09-27

Mai, Lam T. (Department: 2819)

Coded data generation or conversion

Converter compensation

C341S144000, C345S089000, C345S098000

Reexamination Certificate

active

06950045

ABSTRACT:
In a gamma correction digital-to-analog converter, one of first gamma correction reference voltage signals is selected as a first corresponding gray scale signal based on lower m+n bits of a k bit digital input signal when upper l bits of the k bit input signal correspond to an upper or lower code set, where k=l+m+n, and where k, l, m and n are integers. A pair of adjacent second gamma correction reference voltage signals is selected from second gamma correction reference voltage signals based on upper l+m bits when the upper l bits correspond to a middle code set, and one is selected from the pair of second gamma correction reference voltage signals and 2n−1 divided signals as a second corresponding gray scale signal, the divided signals being obtained by dividing an interval between the selected pair into 2nlevels. The first or second gray scale signal is selected to be output.

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