VERFAHREN UND SCHALTUNGSANORDNUNG ZUM ABLEITEN UND FORTLAUFENDEN UEBERWACHEN VON SYNCHRONISIERKRITERIEN

DE 2855676 A UPAB: 19930902 The time multiplex transmission system has a circuit for the continuous derivation and monitoring of the synchronisation criteria. It is obtd. from the bit current. The synchronisation criteria reoccur periodically and synchronisation is est. as quickly as poss. so as to eliminate the recurring interference. The bit patterns formed from the received data are compared with the specific bit pattern of the frame synchronisation symbol. A signal is prod. in the event of concurrence. This signal is used to trigger a flywheel circuit with the periodicity of the time frame when the signal appears within the given time interval. The instant of opening and closing the time window will be determined by considering at least two characteristic results with regard to stability.