Magnetoresistive microphone and acoustic sensing devices
US5450372A · kind A · utility
7Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1994 |
| Grant date | Sep 12, 1995 |
| Priority date | — |
| Expiry date | Mar 30, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H11/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In accordance with the invention, a new type of microphone utilizes a magnetoresistive sensing element. Specifically, acoustical energy causes vibrations between a magnetoresistive element and a magnet, producing a variation in the resistance which can be used to convert an acoustical signal into a corresponding electrical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.