Storage device, controller, and recording and reproducing method
US8988814B1 · kind B1 · utility
6Cited by
4References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 3, 2014 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Sep 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1863
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, a storage device includes a data conversion unit that coverts user data of n bits, into m three-ary symbols, a recording medium that records the symbols as a signal of any one of three levels corresponding to values of the symbols, and a Viterbi equalizer that performs equalization of the m symbols simultaneously based on a signal read from the recording medium while setting the number of states as a power of 3 and using a trellis diagram having 2n branches, and calculates 2n likelihoods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.