Method and arrangement for precise positioning of a magnetic hea

Details Method and arrangement for precise positioning of a magnetic hea Method and arrangement for precise positioning of a magnetic hea

1987-08-14

1989-09-12

Faber, Alan

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 75, 360 7802, 360 741, G11B 556, G11B 555

Patent

active

048665487

ABSTRACT:
For precise positioning of a magnetic head to various tracks of a magnetic tape, deviations occur as a consequence of manufacturing tolerances of the magnetic head, or as a consequence of the adjustment thereof. Correction values are identified wherein a read head identifies a center of a track recorded by a write head. A moving direction of the magnetic tape is reversed and the center of the track is identified again. The read head identifies the center of a track recorded by a neighboring write head. Positional values allocated to the center of the tracks are subtracted from the positional value of the write head.

REFERENCES:
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patent: 3541270 (1970-11-01), Walther
patent: 4313141 (1982-01-01), Yanagida et al.
patent: 4476503 (1984-10-01), Solhjell
patent: 4563713 (1986-01-01), Cahoon et al.
patent: 4609959 (1986-09-01), Rudi
patent: 4679104 (1987-07-01), Dahlerud
Patent Abstracts of Japan, vol. 9, No. 48, (P-388) [1771], Feb. 28, 1985; & JP-A-59 185 020, (Sony KK), 20-10-1984.
IBM Technical Disclosure Bulletin, vol. 17, No. 1, Jun. 1974, pp. 217 and 218, Schwarz.
Patent Abstract of Japan, vol. 9, No. 83, (P-348), Apr. 12, 1985 & JP-A-59 213 070, (Sankivou Seiki Seisakusho KK) 01-12-14 1984.

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