Abstract: A motion-adaptive vertical contour compensator having a receiver for an ID (Improved Definition) system, a color signal processing stage, a motion-detector, a matrix and a vertical contour compensating circuit, wherein the vertical contour compensating circuit is connected between the motion detector and the matrix for performing the compensation after detecting correlation between still and motion pictures of an image, being controlled by the motion-detector. By using the embodiments disclosed, an image of high definition can be obtained since a corresponding extra value to an operating state of the image is added after a double-conversion of a scanning line interpolated signal and an original signal.

Abstract: A circuit and technique for using only a line memory that has small capacity and selecting a proper interpolation filter according to the correlationship of vertical and slanting directions between two scanning lines of input signals. This system performs the steps of applying interlaced scanning signals to an image signal delaying circuit having delaying elements, generating a plurality of signals according to each delay, filtering in a two dimensional space filter, detecting the correlationship of the vertical and slanting directions between the lines by logic operations of the delay signal, selecting a proper space filter of the two dimensional space filter in response to the detected signal and converting in time axis with the interlaced scanning signals and a signal properly generated through the interpolation filter of a filter selector, thereby economically obtaining a high quality picture image.