Speaker changeover device

Details Speaker changeover device Speaker changeover device

1985-10-09

1987-09-01

Isen, Forester W.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Multiple channel

381 86, 381123, H04B 300

Patent

active

046913610

ABSTRACT:
A speaker changeover device has a plurality of audio equipments for outputting ready condition signals when the power source is turned on; a speaker which is used by the audio equipments in common, a changeover control circuit which starts its operation by turning a cycle start switch, cyclically monitors the ready condition signals from the audio equipments simultaneously with the input of clock signals and generates a changeover signal to the audio equipment which first outputs the ready condition signal to stop its operation, and an electromagnetic relay operated by the changeover signal to connect the audio equipment which first outputs the ready condition signal, to the speaker.

REFERENCES:
patent: 3806820 (1974-04-01), Uchiyama
patent: 4323787 (1982-04-01), Sato et al.
patent: 4347510 (1982-08-01), Ishigaki et al.
patent: 4380809 (1983-04-01), Sato
patent: 4435845 (1984-03-01), Timm et al.
patent: 4525820 (1985-06-01), Enoki et al.

Affiliated with

Also associated with

Rating

Speaker changeover device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speaker changeover device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speaker changeover device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1268978