Method and apparatus for controlling head position

Details Method and apparatus for controlling head position Method and apparatus for controlling head position

1993-09-27

1995-04-04

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 75, 360 771, 360 787, 360 784, G11B 709

Patent

active

054042542

ABSTRACT:
Disclosed is a rotating memory device or disk drive which includes a rotating media having tracks thereon and an actuator arm which includes a head for writing representations of data to the track on the rotating memory. The head also reads representations of data from the track of the rotating memory. The head is attached to the actuator arm. The actuator arm is used to move the head to a selected position over the rotating memory such as over the track in the rotating memory. Also disclosed is an apparatus that corrects for errors of low frequency. The device includes circuitry for producing a position error signal for integrating the position error signal to produce a control signal that is used to correct for any errors in the position of the head. The device also includes circuitry for detecting cross track head speed per sector which produces a signal used to control the integration of the position error signal.

REFERENCES:
patent: 4627038 (1986-12-01), Abed et al.
patent: 4697127 (1987-09-01), Stich et al.
patent: 4937803 (1990-06-01), Nakane
patent: 5048001 (1991-09-01), Moriya et al.

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