Servo writing with offset compensation for prewritten reference
US7551387B2 · kind B2 · utility
25Cited by
22References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2007 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Jul 25, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59666
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In accordance with various embodiments, a rotatable member is mounted to a spindle hub so that initial servo data previously provided to the rotatable member are eccentrically offset with respect to a rotational center of the spindle hub. Compensation vales are determined to characterize said offset, after which final servo data are provided to the rotatable member in relation to the initial servo data and the determined compensation values. The final servo data are nominally concentric with the rotational center of the spindle hub.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.