Decoder with bipolar-hyperbolic companding characteristics

Claim 1

A BIPOLAR SIGNAL CONVERTING DEVICE FOR CONVERTING A CODED INPUT SIGNAL CONTAINING POLARITY DATA AND SUPPLIED BY AN INPUT SOURCE INTO A CODED NON-LINEAR OUTPUT SIGNAL COMPRISING: A VARIABLE ADMITTANCE NETWORK, A BRANCH CIRCUIT INCLUDING A FIXED ADMITTANCE CIRCUIT AND A UTILIZATION CIRCUIT CONNECTED IN SERIES, SAID BRANCH CIRCUIT BEING CONNECTED IN SHUNT WITH SAID NETWORK; MEANS CONNECTING SAID INPUT SOURCE TO SAID NETWORK FOR CONTROLLING THE ADMITTANCE THEREOF IN ACCORDANCE WITH THE INPUT INFORMATION; A REVERSIBLE CURRENT SOURCE CONNECTED TO RECEIVE SAID INPUT SIGNALS, FOR SUPPLYING A D.C. CURRENT TO SAID PARALLEL CONNECTED NETWORK AND BRANCH CIRCUIT, SAID CURRENT SOURCE SUPPLYING A FIRST CURRENT FLOWING IN A FIRST SENSE IN RESPONSE TO GIVEN POLARITY DATA AND SUPPLYING A SECOND CURRENT FLOWING IN A SENSE OPPOSITE SAID FIRST SENSE IN RESPONSE TO OTHER POLARITY DATA.