Array-reader based magnetic recording systems with quadrature amplitude modulation
US9129651B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Oct 8, 2013 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Oct 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording system includes an array of analog inputs operable to receive analog signals retrieved from a magnetic storage medium, a quadrature amplitude modulator operable to combine the analog signals to yield a quadrature amplitude modulated signal, a quadrature amplitude demodulator operable to yield a plurality of demodulated signals from the quadrature amplitude modulated signal corresponding to each channel of the array, and a joint equalizer operable to filter the plurality of demodulated signals to yield an equalized output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.