| 摘要 |
PURPOSE:To simplify the device, by applying a plurality of raster lines to an analog addition/subtraction circuit with a prescribed delay sequentially, performing convolution, and performing filter processing of a video signal while keeping the signal as an analog signal as it is. CONSTITUTION:A video signal from an X-ray TV camera enters a synchronizing pulse separation circuit 7, where synchronizing pulses are separated and fed to analog delay lines DL1, DL2 connected in series for the delay by one horizontal scanning time respectively. The output signal at output points 0, 1, 2 are weighted at a weighting resistance R and fed to summing amplifiers 10-12 to obtain outputs A-C. A coefficient device performs 8-times multiplication. The outputs A, B are inputted to delay lines 13, 14 respectively and the output and the output C are summed at an adder 15. An output D is the result of convolution operation with the weight function. An adder 16 adds a synchronizing pulse to the output D, and outputs a video signal after filter processing. |
