Disk drive and write control method for a disk drive
US6111714A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1998 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | Mar 27, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.