Measurement and correction of magnetic writer offset error
US10014019B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Feb 24, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, according to one embodiment, includes writing a plurality of shingled tracks using an array of writers. The array of readers is repositioned to various locations between first and second positions and data is read from the shingled tracks at the various locations. A read offset point where read performance is about the highest during the reading performed when repositioning the array of readers between the first and second positions is determined. The method includes computing, using the read offset point, data describing a lateral writing position to use during writing such that shingled tracks are written in a location specified by a format. As a result, methods according to the present embodiment are able to provide desirable track alignment and reduced readback error rates for data of shingled tracks written to magnetic medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.