Video data correction device and video data correction method

Details Video data correction device and video data correction method Video data correction device and video data correction method

2006-05-09

2006-05-09

Ye, Lin (Department: 2615)

Television

Image signal processing circuitry specific to television

Brightness control

C348S673000, C348S222100, C348S238000

Reexamination Certificate

active

07042524

ABSTRACT:
An average luminance calculation section7calculating an average luminance of video data to output an average luminance level, latches8to10delaying said average luminance levels by one-frame portion respectively to output them, a LUT2outputting a pre-set maximum correction factor e when the video data is input, correction factor calculation sections3to6, adders11and12, and a multiplier12are provided, each of the correction factor calculation sections compares the corresponding average luminance level out of the average luminance levels, which were output, with a plurality of correction thresholds respectively to carry out weighting of the maximum correction factor e responding to the comparison result and to output it as each correction factor, and simultaneously the adders11and11, and the multiplier12correct the luminance level of the video data based on the average value of these correction factors.

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