Magnetic disk drive apparatus and method for compensating characteristics of magnetic disk drive apparatus
US7173786B2 · kind B2 · utility
2Cited by
6References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Aug 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/001
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disk drive apparatus includes a magnetic disk with a data region, a magnetic head located in a region of the magnetic disk other than the data region or outside of the magnetic disk before startup of the magnetic disk and loaded on the data region after the startup, and a current supply unit for providing, just after the startup, a dummy write current with a current value lower than a normal write current value to the magnetic head located in the region of the magnetic disk other than the data region or outside of the magnetic disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.