Hard disk drive with contact detection using a spin torque oscillator
US9355668B2 · kind B2 · utility
16Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2013 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | May 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hard-disk drive having a structurally efficient magnetic head slider utilizes a MAMR-based spin torque oscillator (STO) for head-disk contact detection and for flying height sensing. Contact detection and spacing estimation techniques consider the nominal temperature difference, and thus different criteria, between read and write operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.