Signal amplitude sequenced time division multiplex communication system

Claim 1

A TIME DIVISION MULTIPLEX COMMUNICATION SYSTEM FOR TRANSMITTING AN ANALOG SIGNAL FROM AN ORIGINATING POINT TO A TERMINATING POINT, SAID SYSTEM COMPRISING A SOURCE OF ANALOG SIGNAL COUPLED TO SAID ORIGINATING POINT, A PERIODIC SIGNAL SOURCE FOR PRODUCING A PERIODIC SIGNAL HAVING A FUNDAMENTAL FREQUENCY WHICH IS AT LEAST TWICE AS HIGH AS THE HIGHEST FREQUENCY COMPONENT OF SAID ANALOG SIGNAL TO BE TRANSMITTED, EACH CYCLE OF SAID PERIODIC SIGNAL BEING A PREDETERMINED SINGLE-VALUED FUNCTION WITH RESPECT TO TIME AND HAVING AN AMPLITUDE RANGE OF SAID LEAST AS GREAT AS THE MAXIMUM AMPLITUDE RANGE OF SAID ANALOG SIGNAL, A TRANSMISSION HIGHWAY, A LOW-PASS FILTER HAVING A CUT-OFF FREQUENCY WHICH IS GREATER THAN SAID HIGHEST FREQUENCY COMPONENT OF SAID ANALOG SIGNAL AND LESS THAN SAID FUNDAMENTAL FREQUENCY OF SAID PERIODIC SIGNAL, A NORMALLY CLOSED SEND GATE COUPLING SAID ORIGINATING POINT TO SAID TRANSMISSION HIGHWAY, A NORMALLY CLOSED RECEIVE GATE COUPLING SAID TRANSMISSION HIGHWAY TO THE INPUT OF SAID FILTER, MEANS FOR COUPLING THE OUTPUT OF SAID FILTER TO SAID TERMINATING POINT, AND COMPARISON MEANS COUPLED TO SAID ORIGINATING POINT, SAID PERIODIC SIGNAL SOURCE AND SAID SEND AND RECEIVE GATES FOR SIMULTANEOUSLY OPENING SAID NORMALLY CLOSED SEND AND RECEIVE GATES MOMENTARILY IN RESPONSE TO A PREDETERMINED AMPLITUDE DIFFERENCE EXISTING BETWEEN THE INSTANEOUS AMPLITUDE OF SAID ANALOG SIGNAL AND THE INSTANTANEOUS AMPLITUDE OF SAID PERIODIC SIGNAL.