Dynamic magnetic information storage or retrieval – Recording on or reproducing from an element of diverse utility – Card
Patent
1986-02-03
1988-10-18
McElheny, Jr., Donald
Dynamic magnetic information storage or retrieval
Recording on or reproducing from an element of diverse utility
Card
235487, 235493, 235494, 235495, 369 14, 369 32, G11B 2504, G03K 1908
Patent
active
047791454
ABSTRACT:
An apparatus and method for magnetically recording and reproducing information on closely spaced tracks of a magnetic recording member, such as a magnetic record card, tape, disc or other form of record member wherein electro-optical means is employed to precisely locate a magnetic transducer and a magnetic record track of a plurality of such tracks of a magnetic record member. In one form, electro-optical means is also provided for precisely locating a selected portion of the magnetic record track of a multiple track magnetic recording member to permit one or more magnetic transducers to be operatively energized when precisely aligned with such selected portion of record track. In a particular form of the invention, the magnetic record member is in the form of a thin, flat flexible sheet or card having a multitude of closely spaced magnetic record tracks and an apparatus is provided for precisely locating one or more magnetic transducers with respect to selected portions of selected of such record tracks and thereafter controlling the movement and operation of such transducer or trasnducers to effect a recording on or reproduction from such selected portion of record track.
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