Magnetic disk unit control method for removing dust from a disk
US5461521A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1992 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Oct 5, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic disk unit, a magnetic head slider member for holding a magnetic head is floated from a recording face of a magnetic disk by an air flow caused by a high speed rotation of the magnetic disk. The magnetic disk unit has a magnetic head moving device for rotatably supporting the magnetic head slider member and positioning the magnetic head in a radial direction of the magnetic disk. A control method of the magnetic disk unit has the steps of reciprocating the magnetic head slider member a predetermined number of times at a high speed in a predetermined range in the radial direction of the magnetic disk by using a position of the magnetic head slider member as a reference in the radial direction of the magnetic disk provided when it is detected that a data error is included in reproduced data at a reproducing time of recorded data; and again reproducing the same recorded data after the reciprocating movement of the magnetic head slider member. Other control methods of the magnetic disk unit are also shown.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.