Self-writing of servo patterns
US8879187B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2007 |
| Grant date | Nov 4, 2014 |
| Priority date | — |
| Expiry date | Jan 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59688
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Various embodiments of the present invention allow for the generation of at least one estimated value of a first parameter that is derived from a regularly measured value of a second parameter. In addition, a single control feedback signal can be adjusted via updating of the estimated and regularly measured values in a control feedback loop. At least one spiral track can be written to storage media based on the single control feedback signal, where the single control feedback signal can be received from an compensating circuit that receives the at least one estimated value of the first parameter, which can refer to position, and the at least one regularly measured value, which can refer to velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.