Miniature device for receiving and playing back sound with piezoelectric component as combination microphone/loud speaker
US6028752A · kind A · utility
36Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1997 |
| Grant date | Feb 22, 2000 |
| Priority date | — |
| Expiry date | Aug 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C2207/16
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Sound recording and playback device comprising a sound pick-up microphone connected to a recording channel and a playback loudspeaker connected to a channel for playing the recorded sounds, characterised in that the microphone and the loudspeaker consist of one and the same component (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.