Repeatable runout identification device and method
US6831803B2 · kind B2 · utility
11Cited by
17References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Feb 12, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59627
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A repeatable runout (RRO) identification device for use with a disc drive having a rotatable disc is provided. The RRO identification device determines RRO values for servo fields of a first track of the disc as a function of received position error signal (PES) values for the servo fields independent of averaging the PES values for each servo field. The RRO identification device compares, in real-time, each determined RRO value for each servo field with a threshold repeatable runout value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.