Unilateral conductive gate circuit for selective energization of one of two load devices

Claim 1

A STORAGE DISPLAY CONTROL CIRCUIT FOR ENERGIZING AND DEENERGIZING UPON COMMAND, STORAGE DISPLAY MEANS HAVING FIRST AND SECOND DISPLAY PORTIONS FOR DISPLAYING INDICIA CORRESPONDING TO CODED ELECTRICAL SIGNALS, SAID CIRCUIT COMPRISING; FIRST GATED, UNILATERAL CURRENT-CONDUCTIVE MEANS HAVING A GATE LEAD, AND AN ANODE AND CATHODE CONNECTED FOR CONTROLLING CURRENT CONDUCTION TO ACTIVATE AND DEACTIVATE SAID FIRST DISPLAY PORTION; SECOND GATED, UNILATERAL CURRENT-CONDUCTIVE MEANS HAVING A GATE LEAD AND AN ANODE AND A CATHODE CONNECTED FOR CONTROLLING CURRENT CONDUCTION TO ACTIVATE AND DEACTIVATE SAID SECOND DISPLAY PORTION; MEANS FOR COUPLING A SOURCE OF NORMAL FIRST BIAS OF ONE POLARITY TO BOTH SAID CURRENT CONDUCTIVE MEANS; SWITCH MEANS RESPONSIVE TO THE LEADING EDGE OF A COMMAND PULSE FOR CONNECTING A SOURCE OF SUFFICIENT SECOND BIAS OF OPPOSITE POLARITY TO BOTH SAID CURRENT CONDUCTIVE MEANS SO AS TO OVERCOME SAID FIRST BIAS AND DRIVE THE LATTER MEANS INTO A STATE WHEREIN BOTH DISPLAY PORTIONS ARE DEACTIVATED; SAID SWITCH MEANS BEING RESPONSIVE TO SAID PULSE FOR SUBSTANTIALLY THE DURATION THEREOF FOR MAINTAINING SAID SECOND BIAS ON BOTH SAID CURRENT CONDUCTIVE MEANS; SAID SWITCH MEANS BEING RESPONSIVE TO THE TRAILING EDGE OF SAID PULSE FOR REMOVING SAID SECOND BIAS FROM BOTH SAID CURRENT CONDUCTIVE MEANS; ALL OF SAID MEANS BEING CONNECTED SO THAT UPON REMOVAL OF SAID SECOND BIAS SAID NORMAL FIRST BIAS PERMITS ONLY THAT CURRENT-CONDUCTIVE MEANS HAVING ITS GATE LEAD ENERGIZED AT A PREDETERMINED LEVEL BY ONE OF SAID ELECTRICAL SIGNALS TO BE TRIGGERED THEREBY INTO A STATE WHEREIN ONLY ONE OF SAID DISPLAY PORTIONS IS RESPONSIVELY ACTIVATED.