Signal transducer

Claim 1

APPARATUS FOR DETERMINING THE NATURE OF DATA STORED IN A MAGNETIC MEDIUM, SAID DATA BEING STORED BY DATA ELEMENTS WHICH APPEAR MAGNETICALLY CONDUCTIVE OR INERT DEPENDING ON THE NATURE OF THE DATA THAT THEY STORE, COMPRISING A FIRST TRANSFORMER HAVING A CONSTANT COEFFICIENT OF COUPLING BETWEEN ITS WINDING, A SECOND TRANSFORMER HAVING A PERMEABLE CORE WITH A DISCONTINUITY THEREIN IN WHICH ITS WINDINGS ARE WOUND, MEANS POSITIONING THE DATA ELEMENTS WITH RESPECT TO SAID DISCONTINUITY, WHEREBY BOTH TRANSFORMERS HAVE EQUAL COEFFICIENTS OF COUPLING WHEN A PORTION OF ONE KIND OF DATA ELEMENTS OCCUPIES A PARTICULAR POSITION WITH RESPECT TO THE DISCONTINUITY, MEANS ALGEBRAICALLY ADDING THE OUTPUT SIGNALS ON THE SECONDARY WINDINGS OF SAID TRANSFORMERS, THE PRIMARY WINDINS OF SAID TRANSFORMERS BEING CONNECTED TO PRODUCE OPPOSITE PHASE SIGNALS ACROSS THE SECONDARY WINDINGS AND BEING ADAPTED TO RECEIVE EQUAL AMPLITUDE SIGNALS, WHEREBY SAID ALGEBRAIC SUM SIGNALL HAS A SENSE REPRESENTATIVE OF THE DATA ELEMENT WHICH HAS SAID PARTICULAR POSITION WITH RESPECT TO THE DISCONTINUITY.