RECEIVER OF STILL PICTURE SIGNAL

摘要

PURPOSE:To fetch and read the still picture signal to and out of a memory in synchronizing accurately with said signal by detecting the coincidence between an address allocated previously and an address sent from a CPU via a bus. CONSTITUTION:A CPU18 delivers a certain address where an address coder 35 is fixed to an address line 26. A circuit 15 decodes said address and outputs a decoding pulse to an AND circuit 31 and an OR circuit 33 respectively. The pulse supplied to the circuit 33 is supplied as it is as a clock pulse of a 254-bit shift register 34 of a buffer memory 21 to read out a bit of the memory contents. the read-out memory contents are outputted to the circuit 31. In this case, the above-mentioned decoding pulse is applied to the other input of the circuit 31. Therefore the memory contents are outputted as they are to a data line 25 of the CPU18. The above-mentioned actions are repeated and the CPU18 can read successively the bits of the identification signal contained in a still picture signal.