Acoustic transducer as a near-field magnetic induction coil
US10455312B1 · kind B1 · utility
2Cited by
1References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2018 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | May 11, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the present disclosure provide an electro-acoustic transducer that serves as an acoustic transducer and as an NFMI coil. The use of a single coil eliminates the need for a dedicated NFMI coil, thereby reducing design complexity and cost of production. Circuitry is provided to allow selective filtering of acoustic and NFMI signals so the acoustic and NFMI signals may coexist in a frequency-divisional multiplexing fashion on a same electro-acoustic transducer coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.