Microphone with infared on/off switch

Details Microphone with infared on/off switch Microphone with infared on/off switch

1996-11-12

1998-10-06

Chang, Vivian

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

381 79, 381123, H04R 2500

Patent

active

058189491

ABSTRACT:
A microphone including an infrared switch circuit is disclosed. The infrared switch circuit includes an infrared detector for detecting a reflection of an infrared signal off an object such as a human body, and producing an electrical signal. The circuit also includes an amplifier for amplifying the electrical signal and a comparator for determining if the amplified electrical signal is above a predetermined threshold. The switching finally includes a audio switching network for providing the amplified signal as an audio signal if the amplified signal is above a predetermined threshold. The circuit also includes power conservation techniques to improve performance.

REFERENCES:
patent: 4207466 (1980-06-01), Drage et al.
patent: 4290043 (1981-09-01), Kaplan
patent: 4349814 (1982-09-01), Akehurst
patent: 5347386 (1994-09-01), Gibbs et al.

Affiliated with

Also associated with

Rating

Microphone with infared on/off switch does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Microphone with infared on/off switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microphone with infared on/off switch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-87799