Qualifying a recording head based on symmetry of a cross-track profile
US9349415B1 · kind B1 · utility
2Cited by
8References
20Claims
0Family size
Assignee
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Key dates
| Filing date | May 19, 2015 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | May 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal is recorded over at least part of a track a heat-assisted recording medium via a heat-assisted magnetic recording head. Symmetry of a cross-track profile of the recorded signal is determined, and the recording head is qualified based on the symmetry of the cross-track profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.