Dynamic magnetic information storage or retrieval – Head – Hall effect
Patent
1979-12-18
1982-02-02
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Hall effect
360115, G11B 512
Patent
active
043142974
ABSTRACT:
A process for generating a magnetic induction field within a magnetic medium. A magnetic excitation field and a selection wave are caused to act simultaneously at each point on a path of at least one non-saturated portion of the magnetic medium, in such manner as to modify the magnetic properties of the medium at this point by degrading them and thus producing therein the induction field. The process is applicable to devices for generating a magnetic field utilized in magnetic data recording systems, wherein the magnetic medium is of a "degraded type".
REFERENCES:
patent: 3671681 (1972-06-01), Stauffer
patent: 3723665 (1973-03-01), Lazzari et al.
patent: 3846841 (1974-11-01), Lazzari et al.
patent: 4138702 (1979-02-01), Magnenet
IBM/TDB, vol. 12, No. 8, Jan. 1970, p. 1304, "Magnetic Recording . . . ", by Wellbrock.
IBM/TDB, vol. 12, No. 2, Jul. 1978, pp. 667-668, "Magnetic Read/Write Thin Film Head . . . ", by Brunsch et al.
lEEE Proceedings, Sep. 1966, pp. 1216-1217, "A Magnetostrictive Device for Use in Scanning", By Chin.
IBM/TDB, vol. 17, No. 11, Apr. 1975, pp. 3498-3500, "Six Acoustic Transducers for . . . ", by Bajorek et al.
Compagnie Internationale pour l'Informatique -CII-Honeywell Bull
Wolff John H.
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