| 摘要 |
PURPOSE: To display a video signal on a CRT having different frequency by high picture quality by selecting video signals in odd and even field and a video signal obtained by synthesizing these two video signals in a prescribed order. CONSTITUTION: Input video signals in the odd and even fields are successively stored in 1st and 2nd memories 74A, 74B and video signals are read out of respective memories 74A, 74B in each scanning line in accordance with the input order. The odd field video signal read out of the 1st memory 74A, the even field video signal read out of the 2nd memory 74B and a video signal obtained by synthesizing these two video signals are selected in a prescribed order in odd and even output fields, so that a display picture having scanning lines more than the number of display scanning lines of the input video signal is constituted. Consequently the scanning lines of the input video signals are interpolated and video having high resolution higher than that of the input image and excellent picture quality can be formed. |
