Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1988-01-04
1989-02-14
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 48, 360121, G11B 2108, G11B 509, G11B 5265
Patent
active
048050512
ABSTRACT:
Apparatus for recording and reproducing data on a magnetic recording medium (27) having a plurality of recording tracks (29) comprises a magnetic head (32) and a mechanism which selectively positions the head (32) with respect to the tracks (29) of the magnetic medium (27). The head has at least two gaps which are of different widths and which can be selected one at a time for reading and/or recording data on the magnetic recording medium (27). A control circuit controls the positioning mechanism to move the head with respect to the magnetic recording medium by a distance which depends on the gap selected. The packing density of tracks on the recording medium determines which gap is selected for use.
REFERENCES:
patent: 4068268 (1978-01-01), Idemoto et al.
patent: 4298897 (1981-11-01), Arter et al.
patent: 4622601 (1986-11-01), Isozaki et al.
Patent Abstracts of Japan, vol. 7, No. 176 (P-214).
IBM Technical Disclosure Bulletin, vol. 26, No. 1, Jun. 1983, p. 406.
IBM Technical Disclosure Bulletin, vol. 27, No. 9, Feb. 1985, pp. 5258-5260.
De Marco Giuliano
Fehl Alessandro
Canney Vincent P.
Ing. C. Olivetti & C. S.p.A.
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