Modular assistive listening system
US4920570A · kind A · utility
38Cited by
19References
11Claims
0Family size
Inventors
Key dates
| Filing date | Dec 18, 1987 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Dec 18, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A modular assistive listening system is disclosed that employs a hand-held switching/control module to select one or more of the signals transmitted from a plurality of remote input modules. The selected signal is then transmitted to an earphone module that converts the selected signal to audible sound. The hand-held switching/control module permits a hearing impaired person to easily select desire input modules while permitting unrestricted movement by the use of wireless transmission from the switching/control module to the earphone module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.