Magnetic storage devices

Claim 1

A STORAGE DEVICE OF THE NON-DESTRUCTIVE SAMPLING TYPE COMPRISING AT LEAST TWO MAGNETIC CORES OF SHAPE PROVIDING CLOSED MAGNETIC CIRCUITS EACH CAPABLE OF ASSUMING DIFFERENT STABLE REMANENCE CONDITIONS, EACH CORE HAVING AN OPENING THEREIN, A RESET WINDING ASSOCIATED WITH EACH SAID OPENING AND WOUND IN FIGURE EIGHT FORM WITH THE BIGHTS OF THE FIGURE EIGHT WINDING RESPECTIVELY EMBRACING THE INNER AND OUTER PORTIONS OF THE MAGNETIC CORE IN THE REGION OF SAID OPENING, ENERGIZING MEANS FOR SAID RESET WINDINGS FOR ESTABLISHING IN SAID CORES A FIRST STABLE REMANENCE CONDITION, INPUT, INHIBIT AND SAMPLING WINDINGS EMBRACING EACH OF SAID CORES, TWO INPUT CIRCUITS EACH INCLUDING AN INPUT WINDING OF ONE CORE AND AN INHIBIT WINDING OF THE OTHER CORE FOR SELECTIVELY APPLYING PULSES THERETO FOR CHANGING SAID ONE CORE TO A SECOND STABLE REMANENCE CONDITION FROM A FIRST STABLE REMANENCE CONDITION AND FOR MAINTAINING SAID OTHER CORE IN ITS FIRST STABLE REMANENCE CONDITION, BOTH OF SAID CORES BEING MAINTAINED IN THEIR FIRST STABLE REMANENCE CONDITION WHEN PULSES ARE APPLIED TO BOTH OF SAID INPUT CIRCUITS, OUTPUT MEANS MAGNETICALLY COUPLED TO EACH OF SAID CORES FOR DEVELOPING IN SERIES-CIRCUIT RELATION THEREIN AN OUTPUT IN RESPONSE TO A CHANGE IN FLUX LEVEL IN SAID CORES OF PREDETERMINED MAGNITUDE, AND A SAMPLING CIRCUIT FOR APPLYING SAMPLING PULSES TO SAID SAMPLING WINDINGS OF AMPLITUDE LESS THAN THAT REQUIRED TO CHANGE SAID CORES FROM ONE STABLE REMANENCE CONDITION TO THE OTHER FOR GENERATING IN SAID OUTPUT CIRCUIT AN OUTPUT INDICATIVE OF THE EXISTENCE IN ONE OF SAID CORES OF SAID FIRST STABLE REMANENCE CONDITION AND THE EXISTENCE IN THE OTHER OF SAID CORES OF SAID SECOND STABLE REMANENCE CONDITION AND FOR PRODUCING ZERO OUTPUT WHEN BOTH OF SAID CORES ARE IN SAID FIRST STABLE REMANENCE CONDITION.