Gamma correction device

H - Electricity – 04 – N

Patent

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Details

350/80

H04N 5/202 (2006.01)

Patent

CA 2008690

A gamma correction device comprises a classify- ing circuit which divides an input video signal into a plurality of level ranges according to a plurality of signal levels; a computing circuit which computes the region of the video signal within each of the level ranges obtained by the classifying circuit; and a gamma correction control circuit which is arranged to have the gamma correction characteristic thereof controlled according to each region computed by the computing circuit, to gamma-correct the input video signal and to output the gamma-corrected video signal.

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