Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1994-02-18
1998-10-20
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Head
Hall effect
360126, G11B 539
Patent
active
058255931
ABSTRACT:
An apparatus for sensing a change in a magnetic field is disclosed. The apparatus includes a giant magnetoresistive element positioned adjacent to the magnetic field. First, second, and third electrical contacts are spatially positioned on the giant magnetoresistive element forming a first current path having a first variable resistance between the first and second electrical contacts and a second current path having a second variable resistance between the first and third electrical contacts. The movable magnetic field causes a change in the first variable resistance in the first current path when the field becomes positioned substantially underneath the first current path, and the magnetic field causes a change in the second variable resistance in the second current path when the field becomes positioned substantially underneath the second current path.
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Levy Stuart S.
Seagate Technology Inc.
Watkins Kevin M.
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