Disk drive and write control method for a disk drive

Details Disk drive and write control method for a disk drive Disk drive and write control method for a disk drive

1998-03-27

2000-08-29

Kim, W. Chris

Dynamic magnetic information storage or retrieval

General recording or reproducing

Recording-or erasing-prevention

360 7804, G11B 1504, G11B 5596

Patent

active

061117145

ABSTRACT:
A disk drive and a control method for the disk drive to reduce the number of unnecessary write inhibition operations. A microprocessor unit (MPU) 6 sets an allowable value Cv for the velocity of a magnetic head 1 to V0 until the head passes over N1 sectors after completion of a seek operation, Cv to V1 until the head passes over N2 sectors after passage of N1 sectors, and Cv to V2 after passage of N2 sectors. (N1<N2 and V0<V1<V2) A hard-disk controller (HDC) 10 detects the velocity of the magnetic head 1, based on a position error signal PES from a servo sector regeneration section 8a, and prohibits the write operation of the magnetic head 1 if the velocity exceeds Cv.

REFERENCES:
patent: 5570244 (1996-10-01), Wiselogel

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