GRADATION CORRECTION APPARATUS

摘要

A gradation correction apparatus capable of performing gradation correction using the feedback processing in a digital processing and enabling highly accurate control. The apparatus includes a correction gain deleting−adding amount generation circuit (103) and a correction gain generation circuit (104). The correction gain deleting−adding amount generation circuit (103) calculates a correction gain deleting−adding amount non−linear to a difference S between the reference luminance level Yb1 and the maximum luminance level. As the difference increases, a greater gamma correction is performed.