Remote control system

Claim 1

A CONTROL SYSTEM HAVING A COMMON SIGNAL TRANSLATION CHANNEL AND A PAIR OF INDIVIDUAL SIGNAL TRANSLATION CHANNELS SELECTIVELY ENERGIZABLE RESPONSIVE TO RECEIPT OF A CORRESPONDING PAIR OF CONTROL SIGANL; A DISCRIMINATOR IN SAID SYSTEM COMPRISING A PAIR OF ELECTRON VALVES EACH HAVING AN INPUT CIRCUIT COUPLED TO SAID COMMON SIGNAL TRANSLATION CHANNEL AND AN OUTPUT CIRCUIT COUPLED TO A COREESPONDING ONE OF SAID INDIVIDUAL SIGNAL TRANSLATION CHANNELS; AN IMPEDANCE ARRAY, FOR APPLYING BIAS POTENTIALS TO SAID ELECTRON VALVES, COUPLED ACROSS SAID INPUT CIRCUITS SUCH THAT POTENTIAL APPEARING ACROSS ANY OF SAID INPUT CIRCUITS BIASES ITS CORRESPONDING ELECTRON VALVE IN A CONDUCTIVE DIRECTION AND BIASES SAID OTHER ELECTRON VALVE IN A NON-CONDUCTIVE DIRECTION; SAID IMPEDANCE ARRAY BEING ARRANGED SUCH THAT ALL OR ONLY A PROTION OF AN IMPEDANCE VALUE MAY BE USED IN APPLYING BIAS POTENTIAL TO SAID ELECTRON VALVES, WHEREBY THE BIAS POTENTIALS ARE PROPORTIONED SUCH THAT SIMULTANEOUSLY APPEARING POTENTIALS AT SAID INPUT CIRCUITS MUST BEAR AT LEAST A RATIO OF MAGNITUDE SUBSTANTIALLY LARGER THAN UNITY BEFORE CONDUCTION OCCURS IN EITHER OF SAID ELECTRON VALVES.