| 摘要 |
PURPOSE:To obtain a simple-constitution device of less picture distortion, by converting the infrared video signal, which is obtained by a scanning mirror, to a linear TV signal by a sampling pulse correcting circuit. CONSTITUTION:When an oscillatory type scanning mirror 12 scans, this scanning is detected by a detector 15. By the start signal from the detector 15, a reference clock signal has the frequency divided by load data from a P-ROM17 to output a carrier by a counter 16. This carrier is counted by an address counter 18, and an address of the P-ROM17 is designated by the value of the counter 18 to load next data to the counter 16. This operation is repeated to input the sampling pulse corresponding to the scanning time to an A/D converter 19 from the counter 16. Further, this signal is sampled by the same sampling pulse and is subjected to A/D conversion and is stored in a memory 20 and is converted to a reference TV signal by a D/A converter. |
