System for processing video signal for detecting changes in...

Details System for processing video signal for detecting changes in... System for processing video signal for detecting changes in...

H - Electricity

04

N

350/32, 340/124.

H04N 5/14 (2006.01) G08B 13/194 (2006.01) H04N 5/76 (2006.01)

Patent

CA 1278372

ABSTRACT OF THE DISCLOSURE A video signal processing system which detects a change of the video data in the video signal supplied by a source by comparing the source video signal with a variable reference signal derived from a predetermined number of sampled fields of the source video signal but which excludes the video data of those pixels whose video data fluctuates during the sampled frames.

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