Interconnecting arrangement for time division multiplex electrical signalling systems of the same nominal frequency

Claim 1

IN A TIME DEVISION MULTIPLEX PULSE COMMUNICATION ARRANGEMENT, A FIRST SYSTEM OVER WHICH SIGNALS ARE TRANSMITTED TO A RECEIVING POINT, A FIRST FREQUENCY CONTROL ARRANGEMENT FOR CONTROLLING THE MULTIPLEXING OPERATION OF SAID FIRST SYSTEM, A SECOND SYSTEM OVER WHICH SIGNALS ARE TRANSMITTED FROM SAID RECEIVING POINT, A SECOND FREQUENCY CONTROL ARRANGEMENT FOR CONTROLLING THE MULTIPLEXING OPERATION OF SAID SECOND SYSTEM, THE FREQUENCIES OF SAID FIRST AND SECOND FREQUENCY CONTROL ARRANGEMENTS BEING NOMINALLY THE SAME BUT MUTUALLY INDEPENDENT, MEANS AT SAID RECEIVING POINT FOR STORING SIGNALS INCOMING OVER SAID FIRST SYSTEM UNDER THE CONTROL OF SAID FIRST FREQUENCY CONTROL ARRANGEMENT, MEANS FOR RETRANSMITTING SAID STORED SIGNALS OVER SAID SECOND SYSTEM UNDER THE CONTROL OF SAID SECOND FREQUENCY CONTROL ARRANGEMENT, AND SWITCHING MEANS FOR EFFECTING A SUDDEN CHANGE IN THE LENGTH OF THE STORAGE PERIOD, SAID SWITCHING MEANS BEING OPEREATED WHEN OWING TO PROGRESSIVE SLIGHT CHANGES IN THE FREQUENCIES DEFINED BY A LEAST ONE OF SAID FIRST AND SECOND FREQUENCY CONTROL ARRANGEMENTS THE TIME RELATIONSHIP BETWEEN THE STORAGE AND RETRANSMITTING OPERATIONS OF SAID STORAGE MEANS IS SUCH THAT THE TIME BETWEEN COMPLETION OF STORAGE AND COMMENCEMENT OF RETRANSMISSION APPROACHES ZERO AND ALSO WHEN THE TIME RELATIONSHIP IS SUCH THAT THE TIME BETWEEN COMPLETION OF RETRANSMISSION AND COMMENCEMENT OF STORAGE APPROACHES ZERO, WHEREBY THE PROSPECTIVE INTERFERING PHASE RELATIONSHIP BETWEEN SAID FIRST AND SECOND FREQUENCY CONTROL ARRANGEMENTS IS AVOIDED.