Patent ID: 7982756

Claim:
A timing controller, comprising: a data analyzer, dynamically analyzing the gray level distribution of an image of video data so as to judge the dark/bright extent of the image; a gain processor, coupled to the data analyzer for selecting a gain value according to the dark/bright extent of the image; an original gamma voltage generator, for providing an original gamma voltage; and an operation unit, coupled to the gain processor and the original gamma voltage generator for calculating an actual gamma voltage and providing the calculated result to a stepping voltage generator according to the gain value and the original gamma voltage, wherein the operation unit calculates a positive voltage of the actual gamma voltages according to an equation V′ m =V m +(V m −V com −ΔV p )×G, and V′ m represents any positive voltage within the actual gamma voltages, V m represents any positive voltage within the original gamma voltages, V com represents a common voltage, ΔV p represents a compensation voltage and G is a gain value.