Magnetic transducer head utilizing magnetoresistance effect

Details Magnetic transducer head utilizing magnetoresistance effect Magnetic transducer head utilizing magnetoresistance effect

1985-08-27

1987-09-01

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360 67, G11B 5127, G11B 502

Patent

active

046912592

ABSTRACT:
A magnetoresistance effect type magnetic head apparatus has a magnetoresistance effect sensing element, means for applying a bias magnetic field to the sensing element, a detecting circuit for obtaining a detecting signal, a low pass filter for deriving an unwanted signal component from the detecting signal, and means for applying a cancelling magnetic field to the sensing element so as to eliminate the unwanted signal component. An additional sensing element may also be provided to detect an external magnetic field, and a corresponding signal is generated which is applied to a first sensing element so as to cancel the effects of the external magnetic field.

REFERENCES:
patent: 3979775 (1976-09-01), Schwarz
patent: 4259703 (1981-03-01), Young et al.
patent: 4280158 (1981-07-01), de Niet
IEEE Transactions on Audio-Mar./Apr., "Application of a Magnetoresistance Element to Magnetic Recording", (1965)-pp. 41-43.

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