Read-write magnetic head with flux sensing read element

Details Read-write magnetic head with flux sensing read element Read-write magnetic head with flux sensing read element

1991-12-16

1993-10-19

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Core

360113, 360125, G11B 5147, G11B 5127

Patent

active

052551415

ABSTRACT:
A thin film read-write magnetic head includes a write inductive section having a magnetic circuit consisting of thin film magnetic layers and a read flux sensing element, such as a magnetoresistive device or Hall effect device, located in a gap in the magnetic circuit. During the write mode, a magnetic valve including an electrical conductor provides a shunt path to bypass the flux sensing element. During the read mode, a saturation current is directed to the valve conductor so that the shunt path is open, thereby allowing the flux sensing element to sense the readout signal.

REFERENCES:
patent: 4843507 (1989-06-01), Schewe et al.
patent: 5095397 (1992-03-01), Nagata et al.
patent: 5097371 (1992-03-01), Somers
patent: 5111352 (1992-05-01), Das et al.

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