Dynamic magnetic information storage or retrieval – Automatic control of a recorder mechanism – Controlling the head
Patent
1995-06-07
1996-09-10
Robertson, David L.
Dynamic magnetic information storage or retrieval
Automatic control of a recorder mechanism
Controlling the head
360 7711, 360 7814, G11B 5596
Patent
active
055551394
ABSTRACT:
A system is disclosed wherein a plurality of discs in a stack are accessed using a vertical head array including two servo heads, one located at or near each end of the disc stack. In order to exactly center any given data head over a desired data track location in the disc stack, the error distance of the given data head relative to the data track can be determined by combining proportions of the two servo head signals from the top and bottom servo heads, their proportions being based on the vertical distance of each of the servo heads from the given data head which is to be exactly centered over a data track. If the servo distance from the disc edge is represented by S.sub.1 and S.sub.2, and the vertical distances from the head to the center of the servo heads is represented by Y.sub.1, Y.sub.2, then the general formula for calculating the error correction for centering the typical data head is: ##EQU1##
REFERENCES:
patent: Re32075 (1986-01-01), Harrison et al.
patent: 3994016 (1976-11-01), Moghadan
patent: 4072990 (1978-02-01), Case et al.
patent: 4238809 (1980-12-01), Fujiki et al.
patent: 4377827 (1983-03-01), Rose
patent: 4805164 (1989-02-01), Yamaguchi et al.
Patent Abstracts of Japan, vol. 10, No. 354 (P521), English Abstract for Kokai 61-151887.
IBM Tech. Disc. Bulletin, vol. 17, No. 6, Correction of Data Track Misregistration in Servo Controlled Disk Files, A. Paton, Nov. 1974, pp. 1781-1783.
Robertson David L.
Seagate Technology Inc.
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