Microphone and microphone system
US5323257A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1992 |
| Grant date | Jun 21, 1994 |
| Priority date | — |
| Expiry date | Aug 4, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An infrared-ray cordless microphone including a modulator for modulating an acoustic-to-electric converted sound signal through a predetermined process; and an infrared-ray transmitter for transmitting an output infrared signal obtained by converting the modulated sound signal from the modulator; wherein the infrared-ray transmitter is disposed at a lower end of the microphone body. There is also provided an infrared-ray cordless microphone system comprising such a microphone and a sound output means which includes an infrared-ray receiver for receiving the infrared signal from the microphone, a demodulator for demodulating the received infrared signal, and an electric-to-acoustic converter for converting the demodulated signal into a sound signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.