Method and apparatus for reproducing magnetically recorded signa

Details Method and apparatus for reproducing magnetically recorded signa Method and apparatus for reproducing magnetically recorded signa

1985-09-05

1987-07-14

Cardillo, Raymond F.

Dynamic magnetic information storage or retrieval

Head

Flux gate

360 66, G11B 5335, G11B 509

Patent

active

046806571

ABSTRACT:
A magnetically recorded signal on a magnetic recording medium is reproduced in response to a magnetic field produced thereby by applying a DC biasing magnetic field along the magnetic path of the core of a coil-supporting magnetic head, and adding a high-frequency magnetic field of a small amplitude to the DC biasing magnetic field. The DC biasing magnetic field is produced by passing a DC biasing current through a DC biasing coil on the core, and the high-frequency magnetic field is produced by passing a high-frequency current through another coil on the core.

REFERENCES:
patent: 2722569 (1955-11-01), Loper
patent: 2999135 (1961-09-01), Wiegand
patent: 3182300 (1965-05-01), Lemke
patent: 3428761 (1969-02-01), Webb
patent: 3444332 (1969-05-01), Brown, Jr.
patent: 3629520 (1971-12-01), Schwee

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