Determining angular position of a tape reel using timing based servo format
US7684140B2 · kind B2 · utility
1Cited by
5References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 29, 2008 |
| Grant date | Mar 23, 2010 |
| Priority date | — |
| Expiry date | Feb 29, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided are techniques for determining an angular position of a tape reel. A first edge of a hall sensor is identified. A number of format transitions on a timing based servo formatted tape are counted until detecting a predetermined edge of the hall sensor. A reel circumference is determined. A radius is determined using the determined reel circumference. A new circumference of a next revolution is determined using the determined radius and a tape thickness. A current angular position is determined using the determined new circumference and the counted format transitions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.