Multi-stage actuator with writer position determination capability
US9019650B1 · kind B1 · utility
4Cited by
16References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 30, 2014 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Apr 30, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/596
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method for determining a position of a writer supported by a multi-stage actuator. In some embodiments, the apparatus includes a multi-stage actuator which supports a transducer adjacent a data recording surface. The multi-stage actuator has a coarse actuator and a microactuator. The transducer includes a write element and a read element. A controller is adapted to determine a position of a write element of the transducer with respect to the data recording surface responsive to a position of a read element of the transducer and a displacement distance of the microactuator away from a neutral position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.