| 摘要 |
PURPOSE:To simplify a decoder and to miniaturize a logic circuit by providing a multivibrator circuit generating a delay signal of an output signal of a waveform shaping circuit and a decoding circuit reproducing a pulse signal at each transmission period and generating AND of delay signals. CONSTITUTION:Three synchronizing pulse signals in a remote transmission signal are inputted to the waveform shaping circuit 21 from an input terminal 111. The output pulse signal of the multivibrator circuit 22 and the output signal of the waveform shaping circuit 21 are inputted to an AND circuit 25, where AND operation is applied and the presence of the pulse signal is discriminated and the discrimination signal is outputted to the multivibrator circuit 23 of the next stage. The circuit 23 uses the discrimination signal of the AND circuit 25 to generate a pulse signal similarly as the circuit 22 and the signal is outputted to the AND circuit 26 of the next stage. The AND circuit 26 uses the output signal of the circuit 23 and the output signal of the circuit 21 to output the discrimination signal similarly as the AND circuit 25. |
