System for controlling disk drive by varying disk rotation speed

Details System for controlling disk drive by varying disk rotation speed System for controlling disk drive by varying disk rotation speed

1995-11-08

1997-08-19

Lee, Thomas C.

Dynamic information storage or retrieval

Information location or remote operator actuated control

Selective addressing of storage medium

395821, 395880, 369100, G06F 1300

Patent

active

056597991

ABSTRACT:
A disk drive motor control system which dynamically varies the speed of the motor in accordance with the desired data transfer rate is provided. This is accomplished by monitoring the transfer rate and lowering the speed when the transfer rate decreases and then raising the speed when the transfer rate increases. Hysteresis is preferably built-in so that rapid oscillations between the two speeds do not occur.

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