Method and circuit for controlling head position

Details Method and circuit for controlling head position Method and circuit for controlling head position

1993-12-10

1999-12-28

Huber, Paul W.

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

369 58, G11B 700, G11B 390

Patent

active

060090529

ABSTRACT:
A head positioning method controls a position of a servo head from a first arbitrary track position on a disk to a second arbitrary track position on the disk during a seek operation, where the servo head reads a servo signal from tracks formed on the disk. The head positioning method comprises the steps of setting an moving quantity of the servo head, controlling velocity and position of the servo head depending on the initial moving quantity and a difference between a present track position of the servo head and the second arbitrary track position, and ending the seek operation after a predetermined access time elapses from a start of the seek operation when an actual access time is shorter than the predetermined access time. The predetermined access time is preset depending on the initial moving quantity, and the actual access time is a time it actually takes for the servo head to move from the first arbitrary track position to the second arbitrary track position.

REFERENCES:
patent: 5016126 (1991-05-01), Horie et al.

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