| 摘要 |
<p>PURPOSE:To realize high-speed frame retrieval, etc., of a video signal, by recording an address signal in the interval of horizontal synchronizing signal. CONSTITUTION:A pulse generator 8 separates a synchronizing signal from an input signal and supplies the synchronizing signal to a timing signal generation circuit 9. The circuit 9 controls an RAM11 and outputs an address and a digital signals having a fixed pattern to the synchronizing signal part of the video signal. These signals are encoded in a coding circuit 12, inputted to a signal adder 5 via a switch S1 to be added to a frequency-converted chromaticity signal, and recorded in a proper memory medium. The address signal recorded in the section of the horizontal synchronizing signal is used to perform the frame retrieval, etc., of a video signal.</p> |
