Method and apparatus for reading recorded data by a magnetoresis

Details Method and apparatus for reading recorded data by a magnetoresis Method and apparatus for reading recorded data by a magnetoresis

1985-08-20

1987-12-08

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360113, G11B 502, G11B 5127

Patent

active

047121440

ABSTRACT:
Method and apparatus for magnetoresistive (MR) head biasing and output signal detection for reading data recorded in magnetic media. The MR head may be biased by constant current or constant voltage, and an output signal, proportional to the ratio of the instantaneous value of the change in MR head resistance to total MR head resistance when exposed to the magnetic field of the media, is detected.

REFERENCES:
patent: 3418163 (1968-02-01), Oberg et al.
patent: 3493694 (1970-02-01), Hunt
patent: 3814863 (1974-07-01), O'Day et al.
patent: 4040113 (1977-08-01), Gorter
patent: 4191977 (1980-03-01), Lewkowicz
patent: 4488194 (1984-12-01), Michel
patent: 4492997 (1985-01-01), Arai et al.
patent: 4589038 (1986-05-01), Radtke

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