Method and apparatus for communicating the existence of an...

Details Method and apparatus for communicating the existence of an... Method and apparatus for communicating the existence of an...

2005-02-02

2010-02-02

Crosland, Donnie L (Department: 2612)

Communications: electrical

Condition responsive indicating system

C340S425100, C340S902000, C340S904000, C340S539100, C340S538110, C455S404100, C375S211000

Reexamination Certificate

active

07656285

ABSTRACT:
A system in which one or more alarm sources (10), can wirelessly communicate with a receiver (30), to activate an alarm and does not contain any identification that indicates the communication's source (10). The system may include “repeaters” (40), whose function is to relay the communication from one station to another over distances longer than can be reached by a single transmitter (10), Apparatuses for transmitting (10), repeating (40), and receiving (30), are also disclosed, as well as a communication system comprised of various elements of these.

REFERENCES:
patent: 4251808 (1981-02-01), Lichtblau
patent: 5926103 (1999-07-01), Petite
patent: 6839539 (2005-01-01), Durrant et al.
patent: 6970496 (2005-11-01), Ben-Bassat et al.
patent: 7151913 (2006-12-01), Ahmed
patent: 2 238 930 (1991-06-01), None

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