YC SEPARATION AND STILL PICTURE REPRODUCING CIRCUIT

Two field memories for supplying a composite video signal of a previous frame to a motion detector are provided in performing a three dimensional Y/C separation. An output of the field memory connected to an input terminal is connected to a two dimensional Y/C separator by a switching circuit when there is a request for a function employing a field memory. When there is no such request, the input terminal is connected to the two dimensional Y/C separator. When there is a request for a still reproducing function employing a field memory, the function is realized by using the field memory employed in a three dimensional Y/C separation.