| 摘要 |
<p>PURPOSE:To achieve a scan conversion with a better visual perception, by converting a radar video signal into digital from analog while converted into a parallel signal with a serial/parallel convertor to be applied to stop Y-axis- wise pixel gaps with limited image memories. CONSTITUTION:A digital video signal converted 1 digital from analog is converted in the speed for writing into an image memory 3 with a serial/parallel converter 2. A comparator 4 receives memory video Y-axis address and a raster scan Y-address from a raster scanning address generator 9 to compare and when they coincide or the raster scan Y axis address is smaller, it outputs a signal. A parallel/serial converter 5 receives a signal with the coincidence of the Y-axis address while a parallel/serial converter 6 receives all signals from the comparator 4 to be converted into a serial data. A rise/fall detection circuit 7 receives an output signal of the converter 6 and outputs the first and the last signal alone when individual raster scan Y axis addresses are covered in the X axis. A synthesizing circuit 8 synthesizes an output of the converter 5 and an output of the circuit 7 to match the timing.</p> |
