Monitoring a fly height of a magnetic transducer
US7697223B2 · kind B2 · utility
3Cited by
14References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Sep 30, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for monitoring a fly height of a magnetic transducer comprises flying the magnetic transducer at a distance of separation from a recording media. A read-back signal is read with the magnetic transducer from the recording media. The read-back signal is rectified to produce a rectified signal. The rectified signal is filtered thereby providing a filtered signal. A fault signal is provided in response to the filtered signal exceeding a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.