Method for controlling repeatable following error in a hard disk

Details Method for controlling repeatable following error in a hard disk Method for controlling repeatable following error in a hard disk

1997-04-24

1999-07-20

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

G11B 5596

Patent

active

059263385

ABSTRACT:
A method for controlling a repeatable following error of a hard disk drive, which includes a digital signal processor programmed with a feedback control operation algorithm and a repetition control algorithm. The method includes obtaining data corresponding to position error signals from sectors detected along a track of a disk recording medium during a track following mode; sequentially storing the data corresponding to the position error signals in a table; and obtaining a correction value for compensating a repeatable following error for a particular sector by processing the data corresponding to a position error signal of said particular sector and the data corresponding to the position error signals of preceding and succeeding sectors read from the table through the repetition control algorithm and feedback control algorithm.

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