Obtaining a predetermined phase shift in data using different write precompensation associated with different NRZI patterns
US9830942B1 · kind B1 · utility
1Cited by
6References
18Claims
0Family size
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Key dates
| Filing date | Aug 10, 2016 |
| Grant date | Nov 28, 2017 |
| Priority date | — |
| Expiry date | Aug 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
First and second different write precompensation values are associated with different first and second non-return-to-zero, inverted (NRZI) data patterns. The first and second different write precompensation values cause a predetermined phase shift to be written into test data that comprises the first and second NRZI data patterns. The test data is mitten to a recording medium of a storage device using the first and second write precompensation value. The test data is used to determine a response of the storage device to the predetermined phase shift.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.