Health check for read/write head
US9536550B1 · kind B1 · utility
13Cited by
10References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2015 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Nov 19, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cross-track profile of a known good test track on a recording medium is read during operation of a data storage device. Two or more center locations of the test track are determined at two or more different amplitude levels via a read transducer. A health condition of the read transducer is determined by comparing the two or more center locations of the test track with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.