Tunnel diode discrimination circuitry

Claim 1

A CURRENT DISCRIMINATION CIRCUIT FOR RECEIVING BIPOLAR CURRENT SIGNALS FROM A PAIR OF TERMINALS OF A SENSE LINE FOR A MAGNETIC MEMORY ARRAY, SAID CIRCUIT COMPRISING: A PAIR OF TUNNEL DIODES CONNECTED TOGETHER TO FORM A COMMON JUNCTION AND DISPOSED IN SERIES CONNECTION ACROSS SAID PAIR OF TERMINALS OF SAID SENSE LINE AND ARRANGED TO PRESENT CURRENTS HAVING SAME DIRECTIONS WITH RESPECT TO THE COMMON JUNCTION OF SAID TUNNEL DIODES; CIRCUIT MEANS FOR PROVIDING A BIAS CURRENT TO EACH OF THE TUNNEL DIODES, SAID CIRCUIT MEANS INCLUDING A BIASING CIRCUIT HAVING A HIGH RESISTANCE ELEMENT AND A BIAS VOLTAGE SOURCE IN SERIES CONNECTION THEREWITH, THE BIASING CIRCUIT BEING COMPLETED FROM THE COMMON JUNCTION OF SAID TUNNEL DIODES THROUGH SAID HIGH RESISTANCE ELEMENT AND BIAS VOLTAGE SOURCE TO EACH OF SAID SENSE LINE TERMINALS, SAID HIGH RESISTANCE ELEMENT AND BIAS VOLTAGE SOURCE OF SAID BIASING CIRCUIT BEING SO CHOSEN AS TO PROVIDE FOR BISTABLE OPERATION OF THE RESPECTIVE TUNNEL DIODES; AND INHIBIT MEANS COUPLED TO EACH OF SAID TUNNEL DIODES TO PROVIDE A CURRENT SIGNAL IN OPPOSITION TO SAID BIAS CURRENT TO RESET THE TUNNEL DIODES AFTER EACH SENSING OPERATION.