Circuit for use in programmable hearing aids
US4947433A · kind A · utility
20Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A circuit for use in programmable hearing aids is programmed by inputting digital pulses along two input lines. The programmed information is stored in ring counters and then registered in EEPROMS. A multiplexer (itself a ring counter) selects the ring counter which will be incremented by pulses input to one of the input lines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.