Storage apparatus having servo system for performing positioning

Details Storage apparatus having servo system for performing positioning Storage apparatus having servo system for performing positioning

1993-05-05

1994-07-26

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7807, G11B 5596

Patent

active

053330838

ABSTRACT:
A servo system for use in a magnetic disk apparatus has a memory unit prestoring offset data used to correct offset which can occur when a head is moved to a target track on the disk. The CPU of the servo system uses the offset data stored in the memory unit when the head is moved to the target track at the time of reading and writing data. A settling time period is obtained while the head is moved to the target track on the disk at the time of data reading/writing. The difference between the settling time period is compared with a reference value. If the difference does not fall within an allowable range, the offset data stored in the memory unit is renewed.

REFERENCES:
patent: 4907109 (1990-03-01), Senio
patent: 5053897 (1991-10-01), Ikeshita

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