Patent ID: 8184131

Claim:
A system for dynamic gamma correction of non-uniform frequency clocks, comprising: a gamma slope calculation unit to receive an image data and depend on a brightness-grayscale relationship to numerically calculate a plurality of gamma slopes of a brightness-grayscale relationship for compensating an original gamma curves of a plurality of regions respectively; and a non-uniform frequency clocks counter clock calculation unit to calculate frequencies f n of a non-predetermined counter clock corresponding to each of the regions, based on each of the gamma slopes by formula: fn = Δ ⁢ ⁢ T / n δ 1 × Δ ⁢ ⁢ cc ⁢ ⁢ and ⁢ ⁢ cc δ Total ≅ Δ ⁢ ⁢ cc , wherein ΔT is for all regions of the counter clock, n is number of the regions, δ n is an inversed gamma slope of each of the regions, and cc is total pulses of the counter clock; wherein a non-linear relationship of brightness-voltage for the image data of a display panel is corrected by input of a single ramp voltage and the counter clock.