Electronic measurement of off-center run-out and reel-hub mismatch
US7945419B2 · kind B2 · utility
0Cited by
10References
18Claims
0Family size
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Key dates
| Filing date | Aug 14, 2008 |
| Grant date | May 17, 2011 |
| Priority date | — |
| Expiry date | Apr 11, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a method of electronically measuring reel off-center run-out and reel hub mismatch, tape speed data related to a tape coupled with an operating drive reel is electronically measured. The tape speed data is correlated with drive reel rotation angles. The correlated tape speed data is translated to drive reel hub radii variations with respect to the drive reel rotation angles. The drive reel hub radii variations comprise an operational measure of reel off-center run-out and reel hub mismatch of the drive reel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.