Disc drive failure prediction
US7304816B2 · kind B2 · utility
18Cited by
24References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2005 |
| Grant date | Dec 4, 2007 |
| Priority date | — |
| Expiry date | Dec 3, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method for predicting failure of a disc drive during operation of the disc drive, a write fault count is maintained that corresponds to write faults encountered during write operations to a disc of the disc drive. Additionally, a frequency domain representation of a position error signal of a head of the disc drive is obtained. Finally, failure of the disc drive is predicted based on the write fault count and the frequency domain representation of the position error signal. Another aspect of the present invention relates to a disc drive that is capable of performing the above-described method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.