Nondestructive readout thin film memory

Claim 1

A DATA STORAGE DEVICE COMPRISING: A PLANER UNIAXIAL ANISOTROPIC THIN MAGNETIC FILM ELEMENT HAVING AN ANISOTROPIC FIELD STRENGTH HK AND EXHIBITING AN EASY AXIS OF REMANENT FLUX ORIENTATION DEFINING OPPOSITE STABLE STATES AND A HARD DIRECTION OF FLUX ORIENTATION TRANSVERSE WITH RESPECT TO THE EASY AXIS; A STRIPLINE SHAPED CONDUCTOR TRAVERSING SAID ELEMENT AND POSITIONED IN FIELD COUPLING RELATIONSHIP THERETO; MEANS FOR ENERGIZING SAID CONDUCTOR TO APPLY A FIELD IN THE PLANE OF SAID ELEMENT WHOSE MAGNITUDE IS GREATER THAN HK AND DIRECTED TRANSVERSE TO THE EASY AXIS TO CAUSE THE MAGNETIZATION THEREOF TO ROTATE FROM AN ORIGINAL STABLE STATE TO THE HARD DIRECTION, THE ARRANGEMENT OF SAID CONDUCTOR AND SAID MAGNETIC FILM ELEMENT RELATIVE TO EACH OTHER BEING SUCH THAT ROTATION OF THE FILM MAGNETIZATION INTO THE HARD DIRECTION INDUCES IN SAID CONDUCTOR EDDY CURRENTS WHICH DURING A PREDETERMINED TIME INTERVAL ARE CAPABLE OF APPLYING A FIELD ALONG THE EASY AXIS OF SAID ELEMENT TENDING TO ORIENT THE MAGNETIZATION THEREOF BACK TO ITS ORIGINAL STABLE STATE; AND, MEANS FOR TERMINATING THE ENERGIZATION OF SAID CONDUCTOR WITHIN SAID PREDETERMINED TIME INTERVAL.