Two-motor servo mechanism system for a magnetic disk drive

Details Two-motor servo mechanism system for a magnetic disk drive Two-motor servo mechanism system for a magnetic disk drive

1989-08-07

1992-02-25

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7703, 360 7811, 360 7812, G11B 5596

Patent

active

050918087

ABSTRACT:
The invention provides an improved disk writing system capable of storing larger amounts of information than heretofore possible. The disk mechanism incorporates a dual function servomechanism which includes a voice coil motor for driving the read/write head over long distances relatively quickly, and a stepper motor for precisely positioning the read/write head once it is in the desired region.

REFERENCES:
patent: 3597750 (1971-08-01), Brunner et al.
patent: 3733592 (1973-05-01), Applequist et al.
patent: 3924268 (1975-12-01), McIntosh et al.
patent: 4524397 (1985-06-01), Chalmers et al.
patent: 4614986 (1986-09-01), LaBudde
patent: 4630145 (1986-12-01), Thompson et al.
patent: 4707754 (1987-11-01), Patel et al.
patent: 4858040 (1989-08-01), Hazebrouck
patent: 4875120 (1989-10-01), Takahashi et al.
Lissner et al., Disk File Actuator, IBM Technical Disclosure Bulletin, vol. 17, No. 10, pp. 3016-3018, Mar. 1975.

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