Recording head with current controlled gamma ratio
US7957093B2 · kind B2 · utility
29Cited by
9References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 2009 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Oct 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data recording component includes a read transducer and a write transducer. A thermoelectric device generates heat flow between the read transducer and the write transducer. The heat flow is conducted by thermal conductors. A controlled current source provides current to the thermoelectric device that changes polarity to change directions of the heat flow and thereby vary a gamma ratio of transducer protrusion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.