Distortion compensation at wide-band transmission over a number of equal narrow-band channels

Claim 1

IN A CIRCUIT SYSTEM FOR COMPENSATION DISTORTIONS OF THE SIGNALS TRANSMITTED IN A TIME-DIVISION MULTIPLEX SYSTEM INCLUDING TRANSMITTING MEANS AND RECEVING MEANS CONNECTED BY SEVERAL SIMILAR TRANSMISSION CHANNELS AND IN WHICH AN INPUT SIGNAL FED TO THE TRANSMITTING MEANS AND HAVING A FREQUENCY BAND WIDER THAN THE BAND WIDTH OF EACH OF SAID CHANNELS IS TIME-DIVIDED AND THE PULSES THUS OBTAINED ARE DISTRIBUTED UPON SAID CHANNELS AND IN WHCIH THE PULSES RECEIVED IN THE RECEIVING MEANS ARE SCANNED AND COMBINED TO AN OUTPUT SIGNAL, IN COMBINATION, A GATING CIRCUIT HAVING INPUT AND OUTPUT FOR EACH CHANNEL, OPERATING CIRCUIT MEANS INCLUDING A SHIFT REGISTER AND A PULSE-FORMED NETWORK CONNECTED TO SAID GATING CIRCUIT FOR FEEDING CONTROL PULSES TO THE SAME, THE INPUT OF EACH GATING CIRCUIT BEING CONNECTED TO ONE OF SAID CHANNELS AND THE OUTPUT TO A COMMON POINT, AN INTERGRATING MEANS HAVING AN INPUT AND AN OUTPUT, THE INPUT OF THE INTEGRATING MEANS BEING CONNECTED TO SAID COMMON POINT THROUGH TWO BRANCH CIRCUITS, ONE OF SAID BRANCHES INCLUDING A LOW PASS FILTER AND ATTENUATING MEANS CONNECTED IN SERIES AND THE OTHER OF SAID BRANCHES INCLUDING A BAND PASS FILTER AND DEMODULATING MEANS, SAID LOW PASS FILTER PASSING A FREQUENCY BAND COORESPONDING TO THE FREQUENCY BAND OF SAID INCOMING SIGNAL AND SAID BAND PASS FILTER PASSING A FREQUENCY BAND CORRESPONDING TO A SIDE BAND OF A HARMONIC SIDE WAVE IN SAID OUTPUT SIGNAL AND SAID DEMODULATING MEANS HAVING A CARRIER FREQUENCY EQUAL TO THE FREQUENCY OF SAID HARMONIC WAVE, THE OUTPUT OF SAID INTEGRATING MEANS BEING CONNECTED TO THE OUTPUT OF SAID RECEIVING MEANS.