Track compensation and skew compensation for drives having flangeless rollers and systems thereof
US7957088B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2010 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Mar 2, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/584
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to one embodiment, a system includes a plurality of synchronous servo channels, where each channel receives a signal from a servo reader of a magnetic head. The system also includes logic for estimating a tape velocity, logic for determining a first and second time instant representing a time at which a flag is generated by a related servo channel, logic for determining a first and second correction term representing a time difference between a time at which a peak of a correlation signal and a time at which the flag occur, logic for calculating a skew error estimate based on a reference shift value associated with a servo band pair being spanned by a head module, and logic for applying a control signal including a skew correction that corresponds to the calculated skew error estimate to the skew-following loop. Other systems and methods are disclosed as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.