| 摘要 |
<p>PURPOSE:To eliminate need for a distribution circuit even if the number of stages of a multi-stage bistable means increased by using an output of a hold control means so as to hold only a 1st stage bistable means to a prescribed state. CONSTITUTION:When a subscriber side completes the transmission of data and the power supply is turned off, a hold control means 42 uses a hold signal and an output signal from an output signal generating means 6 to generate a control signal controlling the operating state of the 1st stage bistable means 51 to hold the 1st stage bistable means only to a prescribed state by this control signal. Thus, the output state of the 1st stage bistable means is shifted sequentially toward the post-stage by using the inputted clock and the entire multi-stage bistable means 5 is held to this state and the output signal is held attained therewith.</p> |
