Magnetic recording system

Claim 1

A MAGNETIC SYSTEM FOR RECORDING INFORMATION COMPRISING IN COMBINATION A MAGNETIC RECORDING HEAD, SAID RECORDING HEAD HAVING A PLURALITY OF WINDINGS COUPLED THERETO, SAID WINDINGS BEING MUTUALLY COUPLED BY THE MAGNETIC FLUX INDUCED IN SAID RECORDING HEAD BY CURRENT FLOW IN ONE OR MORE OF SAID WINDINGS, DRIVE MEANS CONNECTED TO A FIRST OF SAID WINDINGS, SAID DRIVE MEANS CAUSING CURRENT FLOW THROUGH SAID FIRST WINDING IN ACCORDANCE WITH THE INFORMATION TO BE RECORDED, SAID CURRENT FLOW RESULTING IN A CHANGE OF MAGNETIC FLUX IN SAID RECORDING HEAD WHEREBY A VOLTAGE IS INDUCED IN A SECOND OF SAID WINDINGS, THE AMPLITUDE OF SAID INDUCED VOLTAGES BEING A FUNCTION OF THE RECORDING FLUX WAVEFORM, AMPLIFIER MEANS COUPLED TO SAID SECOND WINDING AND ADAPTED TO RECEIVE SAID INDUCED VOLTAGES, CIRCUIT MEANS ASSOCIATED WITH SAID AMPLIFIER MEANS FOR ESTABLISHING A PREDETERMINED THRESHOLD POTENTIAL, SAID AMPLIFIER MEANS GENERATING OUTPUT SIGNALS IN RESPONSE TO INDUCED VOLTAGES HAVING AN AMPLITUDE EQUAL TO OR GREATER THAN SAID THRESHOLD POTENTIAL AND PRODUCING NO OUTPUT SIGNALS FOR INDUCED VOLTAGES HAVING A SUBSTANDARD AMPLITUDE, SAID LAST VOLTAGES BEING INDICATIVE OF MALFUNCTIONS IN THE RECORDING PROCESS, AND MEANS FOR COMPARING THE OUTPUT SIGNALS OF SAID AMPLIFIER MEANS WITH THE INFORMATION BEING RECORDED.