| 摘要 |
PURPOSE:To surely detect the completion of a burst signal regardless of the number of bits of the burst signal, etc., by executing a prescribed processing to the inputted burst signal by means of a burst signal completion detecting circuit. CONSTITUTION:For the burst signal, the waveform is shaped by a circuit 1. For the signal, the envelope is extracted by a circuit 2. The signal waveform is smoothed, by a circuit set at a prescribed limit level, at the limit level, and the waveform is made into the signal waveform which rises at the time of the start of the burst signal and starts to fall at the time of the completion of the burst signal. By a circuit 4 set at threshold indicated by a dotted line, a signal, which falls at the time of the rise start of the signal and sharply rises when the signal starts to fall, is outputted. A circuit 5 outputs the pulse of 1 shot when the output signal of the circuit 4 rises. In such a way, regardless of the number of bits of the input burst signal, the pulse of 1 shot can be outputted at the time of the completion of the burst signal. |
