Hard disk drive having improved head stability at low temperature and method of applying current to a head of the hard disk drive
US7561368B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2007 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Oct 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hard disc drive (HDD) that has improved head stability at low temperatures and a method of supplying current to a head of the HDD. The HDD includes a disc, a tunneling magneto resistance (TuMR) head to read data recorded on the disc having a heating coil, and a current control unit to supply a current corresponding to the ambient temperature surrounding the HDD to the heating coil. The current control unit supplies a current corresponding to the ambient temperature to the heating coil of the head. Since a heating coil is inserted in the TuMR head, an optimum current corresponding to the ambient temperature can be supplied to the heating coil, and thus, the head instability during a reading operation at low temperatures can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.