Storage disk apparatus and method of controlling same

Details Storage disk apparatus and method of controlling same Storage disk apparatus and method of controlling same

1998-03-10

2000-12-12

Nguyen, Hoa T.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7707, 360 7814, 318593, G11B 5596

Patent

active

061606766

ABSTRACT:
A storage disk apparatus has a storage disk having servo information, a plurality of heads for reading information recorded on the storage disk, a plurality of first actuators for accurately positioning the heads with respect to the storage disk, a second actuator for coarsely positioning the heads with respect to the storage disk, and a control circuit for controlling the first actuators and the second actuator according to the servo information read by one of the heads. The control circuit supplies a drive current value depending on the servo information read by one of the heads to one of the first actuators to position the one of the heads, and also supplies the drive current value to the other first actuators to position the other heads. When one of the heads is positionally detected, all the first actuators, typically microactuators, are prevented from being vibrated and relatively displaced from the second actuator in a seek mode.

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