Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1987-07-01
1989-07-18
Griffin, Robert L.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
H04B 900
Patent
active
048500402
ABSTRACT:
An infrared remote control system for allowing a console to control the operation of a plurality of remote devices all situated in the same substantially enclosed space, for example, a hotel room. The console includes several simultaneously-operated infrared transmitters, the transmitters being aimed in different directions. Remote devices respond to respective codes, but some also retransmit received radiation so that the console can gain access even to remote devices which are not along a line of sight.
REFERENCES:
patent: 4402090 (1983-08-01), Gfeller et al.
patent: 4673911 (1987-06-01), Yoshida
patent: 4706412 (1987-11-01), Seymour et al.
patent: 4717913 (1988-01-01), Elcar
Buckingham Duane
Teich Rudor M.
Griffin Robert L.
Inncom International Inc.
Von Beck Leslie
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