Method and apparatus for optimizing write properties of magnetic head and defining magnetic head
US7218467B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Nov 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for optimizing write properties of a magnetic head capable of performing read/write functions on a medium including defining the magnetic head as a normal head, a low temperature weak write (WW) head, or a high temperature WW head, and optimizing the write properties using optimal over shoot control (OSC) and write current (WC) according to the defined kind of magnetic head. Accordingly, the magnetic head in a hard disk drive (HDD) can be defined as the normal head, the low temperature WW head, or the high temperature WW head. Since the method uses the optimal OSC and WC values, according to the defined kind of magnetic head, in consideration of writability of the magnetic head and environmental temperature, low temperature or high temperature WW problems are avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.