Multiple actuator disk drive

Details Multiple actuator disk drive Multiple actuator disk drive

1990-11-09

1994-03-08

Smith, Jerry

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7804, 360 9801, 360 9703, 360902, 360903, G11B 5596

Patent

active

052932826

ABSTRACT:
A multiple actuator disk drive utilizes multiple heads, associated with respective ones of multiple actuators, to read data from and write data to all tracks on the surface of a disk. The positioning of each head by the respective actuator is controlled by embedded servo-information recorded in the data tracks. The data tracks have a density of greater than 2000 tracks per inch. Utilizing two actuators provides access times which are reduced with respect to the access times provided by disk drives having a single actuator and an increased data transfer rate.

REFERENCES:
patent: 4270154 (1981-05-01), Crawford
patent: 4881139 (1989-11-01), Hazebrouck
patent: 4890174 (1989-12-01), Chalmers et al.
patent: 4914369 (1990-04-01), Cordovi
patent: 5081552 (1992-01-01), Glaser et al.
Electronic Engineering Times "Winchester Disk Drives" Issue 318, Feb. 25, 1985, pp. 53,56,58-60,62,63,65, Clemens.

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