Patent ID: 7042524
Filing Date: 2006-05-09
Classification: H04N

Abstract:
1. A video data correction device comprising: every time one frame's video data is input, an average luminance calculation section calculating an average luminance of video data, which was input, to output it as an average luminance level; a delay section delaying by one-frame portion said average luminance level that is output from said average luminance calculation section; when said video data is input, a table section outputting a pre-set maximum correction factor value; a first correction factor calculation section comparing a plurality of correction thresholds, which differ in pre-set value, with said average luminance level from said average luminance calculation section to carry out weighting of said maximum correction factor value responding to a comparison result and to output it as a first correction factor value; a second correction factor calculation section comparing said plurality of said correction thresholds with said average luminance level from said delay section to carry out weighting of said maximum correction factor value responding to a comparison result, and to output it as a second correction factor value; and a correction section calculating an average value of said first and second correction factor values and simultaneously correcting said luminance level of said video data based on said calculated average value.