Magnetoresistive head

Details Magnetoresistive head Magnetoresistive head

G - Physics

11

B

352/29.4

G11B 5/39 (2006.01)

Patent

CA 1208359

ABSTRACT A magnetic read head has a first embodiment comprising an elongated magnetoresistive element having a central region and distant ends. The central region has equipotential strips dis- posed intermediate its ends, and detection circuitry is electri- cally connected to these intermediate equipotential strips to sense the changing resistance of the central region in the presence of data magnetically recorded on a medium. In a second embodiment, the magnetoresistive element is folded into a picture frame shape and has its ends joined. The element is vertically arranged so that one of the legs of the element is positioned in proximity to a selected track of a recording medium. A pair of equipotential strips are disposed at opposite ends of the leg to define a sensing region therebetween. Detection circuitry is connected to these equipotential strips to detect the changing resistance of the sens- ing region in the presence of the magnetic fields of the medium.

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