Communications: electrical – Systems – Signal light systems
Patent
1995-08-11
1998-01-27
Hofsass, Jeffery
Communications: electrical
Systems
Signal light systems
341176, 340539, 340542, G08B 500
Patent
active
057126151
ABSTRACT:
A lighting system comprising a selectively operable light source, RF receiver for reproducing a received pulsed RF signal. Means for determining whether the reproduced RF signal is within an acceptable range of asymmetric patterns of "on" pulse times followed by "off" times selected to include a plurality of different asymmetric patterns and operating means for the light source for a selected period of time when the determining means determine that the reproduced RF signal is within acceptable range.
REFERENCES:
patent: 4027276 (1977-05-01), Shaughnessy
patent: 4109239 (1978-08-01), Davis
patent: 4355309 (1982-10-01), Hughey et al.
patent: 4550312 (1985-10-01), Galloway et al.
patent: 4871997 (1989-10-01), Adriaenssens et al.
patent: 5331325 (1994-07-01), Miller
patent: 5535104 (1996-07-01), Maffey et al.
Maffey George E.
Saar David A.
Simpson Raymond W.
Emhart Inc.
Hofsass Jeffery
Smith Spencer T.
Tweel , Jr. John
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