PRML based magnetic servo position demodulator
US7362525B2 · kind B2 · utility
1Cited by
41References
41Claims
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Key dates
| Filing date | Jul 22, 2005 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Mar 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatuses and methods for detecting reference marks on magnetic data storage mediums are described herein. In one variation, the apparatus comprises a magnetic servo position demodulator operable to extract information from the magnetic data storage medium utilizing Partial Response/Maximum Likelihood (PRML) technique. Synchronization marks stored within the PRML channel is then detected utilizing a digital filter. For each of the detected synchronization mark, a further refined position of the synchronization mark can be determined utilizing a mathematical prediction model.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.