Method for reducing noise during seeks in a hard disk drive
US5475545A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1991 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Mar 28, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5547
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for effecting seeks of a transducer head across a data storage disk wherein the head is accelerated over a first sequence of time intervals and decelerated over a second sequence of time intervals. In each time interval of the first sequence, the head is accelerated in relation to the difference between the actual head velocity and a current demand velocity that is determined by incrementing the demand velocity for the previous interval by an amount that is a fraction of the difference between the previous demand velocity and a stored profile velocity selected in accordance with the current location of the head. In each time interval of the second sequence, the head is decelerated in relation to the difference between the actual head velocity and a stored profile velocity selected in accordance with the current location of the head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.