Circuit arrangement for telecommunications systems, in particular telephone switching systems, with receiving devices for signals

摘要

A receiving device operating according to the last-look principle, with a cyclically operating polling device, and with a shift register with a run time corresponding to the polling cycle, and with a comparator comparing the polling information transmitted directly by the polling device with the polling information in each case temporarily stored for the duration of a polling cycle, has a shift register with a number of shift steps which is greater than the number of polling steps of the polling device for each polling cycle. The pulse clock string fed to the polling device is also fed to a scaling device whose output pulse clock string is mixed with the original pulse clock string and fed to the shift register to carry out the shift steps of the latter. <IMAGE>