| 摘要 |
PURPOSE:To precisely decide signal interruption in a repeater to be used for digital communication by applying a signal outputted from a discriminating and reproducing part and a signal obtained by delaying the phase of said output signal to a flip-flop (FF). CONSTITUTION:A signal (a) outputted from a discriminating and reproducing part 1, an equalizing amplifier part or a wave-shaping amplifier and a signal (b) obtained by delaying the phase of the output signal (a) by a delay circuit 3 are applied to FF2. When a data signal is inputted, its output signal (c) is DC and, at the time of signal interruption, the signal (c) is AC. By detecting the AC component, the signal interruption can be precisely decided. |
