| 摘要 |
PURPOSE:To reject the noise due to discontinuous point, by installing the time switch having signal leakage prevention function due to residual data on the channel at the output side of communication line netwark at non-communication. CONSTITUTION:When the communication data of time slot ti of incoming side highway GHWb of time switch is replaced with the time slot t<a> of the output highway OHW, and if the address control memory AM is accessed at ti, the address data A(ta) is read out. The selector SEL selects the address data A(ta) and feeds it to the data bus memory DPM. In DPM, the communication data of ti is written in. The channel counter CTR outputs A(ta) at ta and the data of A(ta) is read out. The data read out is fed to OHW. At non-communication state, the production of noise due to leakage of residual data can be prevented by stopping the write-in indication to the readout of A(ta) and the control circuit WC1 at ti. |
