| 摘要 |
PURPOSE:To vary the size of video and aspect again, by instructing the memory address of a field memory and controlling the selection signal for the field memory. CONSTITUTION:While a counter 11 counts a signal VsvOS(one shot signal of vertical synchronizing signal) by a prescribed number, no output is given from an AND 2, no address is given and no video signal is recorded. While a counter 13 a signal H (horizontal synchronizing signal) by (m), the specific address number is counted by a counter 14 to stop a Q terminal output of an FF circuit 15 by an overflow signal. As a result, a video signal from a circuit 3 toward horizontal direction less than a suitable size on screen instructs the horizontal address with an A/D converter 19 to record a video digital signal having a suitable width. |
