Zero phase start estimation in readback signals
US9123383B1 · kind B1 · utility
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20Claims
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Key dates
| Filing date | Mar 5, 2014 |
| Grant date | Sep 1, 2015 |
| Priority date | — |
| Expiry date | Apr 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage system identifies analog-to-digital conversion samples with amplitude below a certain threshold. Remaining samples are grouped according to phase into one or more quadrants. A multi-coordinate with overlapping quadrants is used to further differentiate sample points. The system then computes an average phase for zero phase start estimation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.