| 摘要 |
PURPOSE:To obtain a video display device having sufficient good response in the display of a dynamic picture by storing once a screen in a memory, comparing plural screens and detecting the movement of the displayed screen to control a display element. CONSTITUTION:A video signal applied on a line 105 is converted into a digital signal at an A/D converter 106 and stored once in a memory 108. The digital signal stored in the memory 108 is read on a line 109 with an accurate delay of time by one screen, calculated together with a signal on a line 107 at a subtractor 110, and a different between the preceding screen 109 and the present screen 107, i.e., a dynamic signal is obtained on a line 111. This dynamic signal and the video signal 107 are added at an adder 112 to operate a control switch for a display element such as electric bulb. |
