Head to media interface monitoring
US9953673B2 · kind B2 · utility
2Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2016 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Jul 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/5534
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A storage device disclosed herein includes a transducer head with a proximity sensor that generates head-disc proximity signals, a digitizer configured to convert the analog proximity signals from the proximity sensor to digitized sample data, a discrete wavelet transformation (DWT) module configured to analyze the digitized sample data by performing an enhanced DWT on the digitized sample data to generate DWT coefficients, and a modal filter configured to determine dominant head-disc interference (HDI) modes for a transducer head by analyzing the DWT coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.