Data storage device employing one-dimensional and two-dimensional channels
US9013821B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2014 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Jun 10, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is disclosed comprising a disk comprising a plurality of data tracks. A first data track is read to generate a first read signal that is sampled to generate first signal samples. A second data track adjacent the first data track is read to generate a second read signal that is sampled to generate second signal samples. The first signal samples and the second signal samples are processed by a first two-dimensional (2D) to one-dimensional (1D) equalizer to generate a first 1D sequence of equalized samples, and by a 2D-to-2D equalizer to generate a 2D sequence of equalized samples. The first 1D sequence of equalized samples are processed using a first 1D detector to detect a first estimated data sequence, and the 2D sequence of equalized samples are processed using a 2D detector to detect a second estimated data sequence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.