Data storage device detecting abnormality with a write assist element based on slope of protrusion
US10699736B1 · kind B1 · utility
5Cited by
14References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2019 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Jul 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3136
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a head actuated over a disk, wherein the head comprises a write assist element. Data is written to the disk using the write assist element. A protrusion of the head toward the disk is measured periodically, and an abnormality with the write assist element is detected when a slope of the protrusion measurements indicates the protrusion is increasing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.