Patent ID: 8004578

Claim:
An automatic flicker detection and correction apparatus in a video capture device, comprising: a frame number generator for receiving a plurality of frames and accordingly generating frame numbers based on the frames in sequence; a storage device connected to the frame number generator to store brightness values of partial pixels of a frame numbered 1; an extractor connected to the frame number generator to extract brightness values of partial pixels of a frame numbered N, wherein N is an integer greater than 1; a difference summation device connected to the storage device and the extractor to compute differences of the brightness values of the partial pixels of the frames numbered 1 and N and to sum up the differences to thereby generate a brightness difference summation signal; a flicker detector connected to the difference summation device to detect a banding value in the brightness difference summation signal; and a flicker corrector connected to the flicker detector and the frame number generator to use the banding value and the frame numbers to find a fixed frequency flicker effect in the frames and to generate a flicker correction signal for correcting an image sensor of the video capture device when the fixed frequency flicker effect in the frames is found.