| 摘要 |
PURPOSE:To timely and certainly perform switching of readout from a memory when speed-changeable reproduction is made by utilizing a memory, by recognizing fixed address numbers. CONSTITUTION:Reproducing address signals added to image signals are set in such a way that, for example, a first address number of a field is set to '01' and the last address number is set to '11' when the field is inputted to a terminal 10. Then a reproducing address number B is inputted to an address discriminating circuit 20 and, when the inputted reproducing address number B coincides with a previously set number, for example, the first address number of a field, the address discriminating circuit 20 outputs a decision signal C. During the period from the memory to the time when the address discriminate signal C is outputted, reproduced data is written in a field memory and image signals of one field quantity are stored in the memory. Therefore, switching of the field memory can be performed certainly and accurately.
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