Embedded audiphone
US8520867B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 16, 2009 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Apr 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/554
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a high-accuracy embedded audiphone.A transducer (34) made of a giant magnetostrictive element is provided in an intracorporeal unit (3) that is embedded in a skull (5). An audible sound modulation transmission signal (S1), which is amplitude-modulated by a sound collection signal generated in an extracorporeal unit (2), is transmitted from an extracorporeal transmitter coil (31) to an intracorporeal receiver coil (32) provided in the intracorporeal unit (3) with the help of a transmission magnetic flux (33). Moreover, because of an induced electromotive force of the intracorporeal receiver coil (32), the transducer (34) expands and contracts. Therefore, it is possible to highly accurately conduct an audible sound signal through bone with no power source or demodulation circuit provided in the intracorporeal unit (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.