| 摘要 |
Video information can be taken from an image pickup apparatus at a desired frequency. A first timing control circuit operates in synchronization with the operation of a drive circuit to control the operation of an analog processing circuit and an A/D converter and writing of video data D1(n) into a line memory. A second timing control circuit controls to read the video data D1(n) from the line memory and to operate a digital processing circuit. A CCD operates intermittently in a horizontal scanning cycle, and while it is operating, the analog processing by the analog processing circuit and the quantizing processing by the A/D conversion circuit are performed. While the CCD is not operating, the digital processing by the digital processing circuit is conducted to output video data D2(n).
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