| 摘要 |
<p>PURPOSE:To ensure the eacy contermeasure to the increment of the circuit number by forming the switching device as the repeater including the circuit switching circuit. CONSTITUTION:The following circuits are installed to receiver 21-1: equalization circuit 31-1 incorporating the peak value detection and AGC functions; timing extraction circuit 32-1 which extracts the clock component out of the digital data; and identification/regeneration circuit 33-1 which gives the identification and regeneration to the digital data in the extracted timing. These circuits are also rovided to receiver 21-2 as well. On the other hand, timing extraction circuit 34-1 and U/S converter 35-1 which converts the uni-polar signal into the transmission signal are installed to transmitter 22-1.</p> |
