Method for sensing run-out in data fields
US6952321B1 · kind B1 · utility
2Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | Oct 4, 2005 |
| Priority date | — |
| Expiry date | Jul 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of determining run-out in a disc drive involving steps of performing a direct current erase, selecting a reference track, writing a sinusoidal signal into a first track at a first offset from the reference track, sensing a read signal along the reference track, and analyzing the read signal to extract run-out information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.