Communications: electrical – Condition responsive indicating system
Reexamination Certificate
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
Hansen Kim Johnnie
Lyster Thomas Dean
Morgan Carlton B.
Crosland Donnie L
Koninklijke Philips Electronics N.v.
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