Detecting shingled overwrite errors
US9536563B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2016 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Feb 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1292
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed for detecting shingled overwrite errors. When a read error is encountered when reading from shingled recording tracks, a processor may determine whether the read error is an error caused by shingled overwriting. The processor may determine whether the read error is caused by shingled overwriting by determining read signal quality of one or more sectors preceding the read error, such as based on a bit error count or bit error ratio (BER), and comparing the read signal quality to a threshold value. The processor may determine that the read error is caused by shingled overwriting when the read signal quality value is lower than the threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.