| 摘要 |
PURPOSE:To realize a time-division switch featuring the double operating speed by providing two sets of temporary memory circuits with the simultaneous writing and reading carried out for those temporary memory circuits and also inverting the writing and reading with every cycle of the time-division switch. CONSTITUTION:When the first frame head signal is supplied, the switch circuits delivers all information of terminal A. Then the information is read out through terminal D0 of temporary memory circuit 0 and via the address information given from the switch memory to be sent to the time slot of the outgoing side via switch circuit 2. On the other hand, the time slot information of the incoming side is written into temporary memory circuit 1. And with supply of the next frame head signal, the switch circuits all deliver the information to be supplied to terminal B. As a result, the information of the input time slot is written into circuit 0. On the other hand, the address information is supplied to circuit 1 from the switch memory via switch circuit 1, and accordingly the information written previously is read out to the time slot of the outgoing side through terminal D0. |
