Moving detector and its moving method of detection null for adaptive YC

摘要

PROBLEM TO BE SOLVED: To provide a motion detection circuit that an realize a motion with high precision to operate adaptive YC separation with high quality as an image processing unit. ;SOLUTION: A frame difference arithmetic section 1 calculates a motion component and a color difference signal component of a luminance signal by a frame difference and a band pass filter 2 extracts a motion component of a leaked color difference signal. 1H delay sections 3-5 and sbutractors 6-9 obtain a difference of the signals to extract a motion component (2-line data) of the luminance signal with high precision. A comparator-section 10 compares 2-line data and outputs a value of the data which is smaller as a motion coefficient of the luminance signal. A 2-frame difference arithmetic section 11 and a 1H delay section 12 calculate a motion coefficient of a color difference signal with high precision by a 2-frame difference with color correlation. A comparator section (MAX) 13 compares a maximum value of the motion coefficient of the luminance signal with that of the motion coefficient of the color difference signal and outputs a maximum value which is higher as a motion coefficient.;COPYRIGHT: (C)2000,JPO