Technique for controlling the position error signal of a disk dr

Details Technique for controlling the position error signal of a disk dr Technique for controlling the position error signal of a disk dr

1997-06-20

1999-12-21

Klimowicz, William J.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

360 7702, G11B 5596

Patent

active

060057394

ABSTRACT:
A technique for controlling the position error signal of a disk drive using a disk recording a servo burst signal for controlling an on-track position of a head includes: checking whether the position error signal is a high level from the region recording the servo burst signal, marking the servo sector including the region as a defective servo sector when the position error signal is repeatedly detected to be at a high level in the region, and performing servo control by using the position error signal detected from the servo sector positioned ahead of the defective servo sector when a defective servo sector has been detected in a data read or write operation.

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