Luminance/chrominance separating apparatus.

摘要

A Y/C separating apparatus includes a first separator (30) for separating a stationary C component which has a demodulator (32) for demodulating a color difference signal from the composite video signal with a color subcarrier signal, a detector (35/36, 37/38) for detecting a frame difference signal between two adjacent frames of the color difference signal and a modulator (43) for modulating the frame difference signal with the color subcarrier signal so as to reproduce the stationary C component. Also included in a second separator (3, 4, 5) for separating a moving C component by detecting a line difference signal between adjacent lines of the composite video signal, a motion detector (7) for detecting a motion signal as a frame change between adjacent frames of the composite video signal, a first subtractor (8) for subtracting the stationary C signal from the composite video signal so as to separate a stationary Y component, a second subtractor (9) for subtracting the moving C component from the composite video signal so as to separate a moving Y component, a first mixer (10) responsive to the motion signal for mixing the stationary C component and the moving C component with each other so as to output the C component and a second mixer (11) responsive to the motion signal for mixing the stationary Y component and the moving Y component with each other to output the Y component. <IMAGE>