Detecting fly height of a head over a storage medium
US7136250B1 · kind B1 · utility
57Cited by
7References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Apr 12, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method comprising receiving a pulse generated in response to a transition of a head over a predetermined pattern on a storage medium, measuring a first amplitude of a power spectrum of the pulse at a first predetermined frequency and a second amplitude of the power spectrum of the pulse at respective second predetermined frequencies, and calculating a distance between the head and the storage medium based on a function of the first and second amplitudes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.