Annunciator communication system

Details Annunciator communication system Annunciator communication system

1976-11-26

1978-05-30

Griffin, Robert L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

325 41, 325 64, 340311, H04B 504, H04B 354, G09F 932

Patent

active

040925994

ABSTRACT:
An annunciator communications system in which any one of a plurality of identical transmitting-receiving units can communicate to the rest through minimum communication links, such as power transmission lines, piping, building structures, or the like. Each unit contains a keyboard encoder controlling the transmitting section of a universal asynchronous receiver/transmitter integrated circuit to generate a modulated 200 Khz output. The receiver section of the integrated circuits in all units on the communications link receives the binary encoded data and passes it to a decoder and multiplexer that controls the input to a six-digit calculator integrated circuit that generates data output signals to a six-digit numeric display.

REFERENCES:
patent: 2812509 (1957-11-01), Phelps
patent: 3846783 (1974-11-01), Apsell et al.
patent: 3944724 (1976-03-01), Kilby et al.
patent: 3976995 (1976-08-01), Sebestyen
patent: 3984775 (1976-10-01), Cariel et al.

Affiliated with

Also associated with

Rating

Annunciator communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-471723