Magnetic disk device having compensation for dimensional change

Details Magnetic disk device having compensation for dimensional change Magnetic disk device having compensation for dimensional change

1987-05-28

1989-05-02

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7706, G11B 5596

Patent

active

048273627

ABSTRACT:
An off-set signal provided from an off-set detector is stored in a memory. When a head is positioned on a data track, an off-set signal stored in the memory is read out to correct the head position and position the head to the center of the data track, thus effecting accurate reading and writing of data. An off-set generator feeds the servo system with a dummy off-set signal for producing an off-set correction signal, whereby the servo system corrects the off-track of the magnetic head.

REFERENCES:
patent: Re32075 (1986-01-01), Harrison et al.
patent: 4136365 (1979-01-01), Chick et al.
IBM Tech. Disc. Bulletin, Positioning Mechanism and Error Sensing Device, G. N. Gaebelein, vol. 1, No. 1, Jun. 1958, p. 10.
IBM Tech. Disc. Bulletin, Generation of Position Correction Signal for All Disk Pack Surfaces, vol. 12, No. 11, Apr. 1970, G. R. Santana, p. 1891.
IBM Tech. Disc. Bulletin, Accessing Technique for Magnetic Disks, J. F. Elliott, vol. 17, No. 5, Oct. 1974, pp. 1464-1465.
IBM Tech. Disc. Bulletin, Correction of Data Track Misregistration in Servo Controlled Disk Files, A. Paton, vol. 17, No. 6, Nov. 1974, pp. 1781-1783.
C. A. Walton, "Track Following and Seeking System," IBM Technical Disclosure Bulletin, vol. 13, No. 11, Apr. 1971.

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