Apparatus for detecting a movement of a digital television...

Details Apparatus for detecting a movement of a digital television... Apparatus for detecting a movement of a digital television...

H - Electricity

04

N

350/33

H04N 7/12 (2006.01) G06T 7/20 (2006.01) H04N 5/14 (2006.01)

Patent

CA 1239218

ABSTRACT OF THE DISCLOSURE Upon execution of the movement detection by way of a gradient method, the leftward and rightward sampling differences .DELTA.EL and .DELTA.ER at a change extremal value point are used to detect the respective movements in the vertical and horizontal directions. The movement amounts detected are selectively fetched. Upon addition/ subtraction of the frame difference, the sign of sample is held until the positive or negative sign of the sample which is obtained from the result of comparison between the sampling difference values before and after the sample is changed. The accurate movement detection is performed by controlling the addition/ subtraction in response to the holding signal.

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