Matrix cross-point scanning system

Claim 1

A MATRIX CROSS-POINT SCANNING SYSTEM HAVING AT LEAST TWO GROUPS OF INTERCROSSING CONDUCTORS AND SWITCHING MEANS FOR SWITCHING THE CONDUCTORS OF ONE OF SAID GROUPS, IN A CYCLIC ORDER OF SUCCESSION, FROM A FIRST POTENTIAL TO A SECOND POTENTIAL AND BACK TO SAID FIRST POTENTIAL, SAID SYSTEM COMPRISING A PLURALITY OF BISTABLE TRIGGER CIRCUITS HAVING FIRST AND SECOND TERMINALS, SAID TRIGGER CIRCUITS EACH HAVING A FIRST STABLE STATE PRESENTING A LOW IMPEDANCE BETWEEN SAID TERMINALS AND A SECOND STABLE STATE PRESENTING A HIGH IMPEDANCE BETWEEN SAID TERMINALS, A SOURCE OF DIRECT VOLTAGE HAVING THIRD AND FOURTH TERMINALS, MEANS CONNECTING SAID THIRD TERMINAL TO SAID SECOND TERMINALS, SEPARATE RESISTOR MEANS CONNECTED BETWEEN SAID FOURTH TERMINAL AND EACH OF SAID FIRST TERMINALS, MEANS CONNECTING THE CONDUCTORS OF SAID ONE GROUP SEPARATELY TO THE FIRST TERMINAL OF AT LEAST SOME OF SAID TRIGGER CIRCUITS, A SOURCE OF OPERATING PULSES, MEANS RESPONSIVE TO SAID OPERATING PULSES FOR TRIGGERING SAID TRIGGER CIRCUITS, WHEREBY AT LEAST ONE TRIGGER CIRCUIT IS BROUGHT INTO SAID FIRST STABLE STATE FROM SAID SECOND STABLE STATE AND AT LEAST ANOTHER TRIGGER CIRCUIT IS BROUGHT INTO SAID SECOND STABLE STATE FROM SAID FIRST STABLE STATE IN RESPONSE TO PULSES FROM SAID SOURCE OF OPERATING PULSES, AND MEANS FOR CONTROLLING THE POTENTIAL OF THE CONDUCTORS OF ANOTHER OF SAID GROUPS OF CONDUCTORS.