Magneto-electric transducer for a magnetic recording system and

Details Magneto-electric transducer for a magnetic recording system and Magneto-electric transducer for a magnetic recording system and

1980-07-16

1983-08-23

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360113, 360119, 360123, 360125, G11B 512, G11B 522

Patent

active

044007523

ABSTRACT:
The invention is directed to transducers for recording on (writing) and playback from (reading) a magnetizable support medium. A single transducer (head) provides both record and playback functions. Recording is carried out using a winding for inducing an external magnetic flux across a gap in the transducer and playback is carried out by sensing an internal leakage flux using a Hall effect magneto-resistive element placed outside of a gap in the head. The magneto-resistive element delivers a substantially linear electrical signal response as a function of the magnetic field applied by relative motion between the transducer gap and the support medium.

REFERENCES:
patent: 3146317 (1964-08-01), Kuhrt et al.
patent: 3921217 (1975-11-01), Thompson
patent: 3945038 (1976-03-01), Lazzari
patent: 4195323 (1980-03-01), Lee
patent: 4300177 (1981-10-01), Koel et al.
IBM Tech. Disc. Bull., R. J. Gambino et al, Magnetic Films for Hall Effect Devices for Magnetic Recording Heads, vol. 18, No. 12, May 1976, pp. 4214-4217.

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