| 摘要 |
<p>PURPOSE:To avoid jitter accumulation at the time of reproducing and repeating a network synchronizing signal in each node by limiting the time length of one period of the quantized network synchronizing signal within a certain range. CONSTITUTION:A latch 1 outputs the received network synchronizing signal to a signal line 23 synchronously with a self-node clock. If the time length of one period of the network synchronizing signal received at present is shorter than the prescribed range, a condition discriminating circuit 8 outputs a set signal to a signal line 30 in accordance with a prescribed logic and sets a state register 2. When the time of one period of a reproducing system network synchronizing signal reaches the prescribed range to output a signal 26 from a decoder 5, a reproducing position signal 29 is outputted to not only set reproducing system synchronizing signal time position information to a latch 10 but also reset a network synchronizing system clock counter 4 and the register 2. Thus, the time of one period of the reproducing system network synchronizing signal is limited within the prescribed range, and jitter accumulation is avoided at the time of reproducing and repeating the network synchronizing signal in each node.</p> |
