Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1979-09-27
1981-02-03
Griffin, Robert L.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455605, 455606, 343 18D, 332 751, H04B 900, H01Q 1580, H01S 300
Patent
active
042492653
ABSTRACT:
A device to receive coded light signals and to transmit modulated light signals in the direction of the incident signals, comprising an omnidirectional detection device composed of a plurality of radiation sensors, an optical device for reflecting the light signal in its own direction, a recognition and encoding circuit connected to the sensors and an optical modulator operable to prevent the reflection of the light signal, the modulator being controlled by the recognition and encoding circuit, the modulator comprising a shutter rotatable about the axis of the detection device, a member for driving the shutter controlled by the recognition and encoding circuit and a second circuit connected to the outputs of the sensors to determine which one of the sensors receives the incident beam, the second circuit delivering to the drive member a control signal for setting the initial angular position of the shutter.
REFERENCES:
patent: 3432853 (1969-03-01), Wise
patent: 3433960 (1969-03-01), Mimott
patent: 3493294 (1970-02-01), Fitzmaurice
patent: 3584220 (1971-06-01), Nomisra et al.
patent: 3633158 (1972-01-01), Heibel
patent: 3863064 (1975-01-01), Doyle et al.
patent: 4134008 (1979-01-01), de Corlieu et al.
patent: 4143263 (1979-03-01), Eichweber
Coles Edward L.
Griffin Robert L.
Societe Anonyme de Telecommunications
LandOfFree
Device for receiving and transmitting coded light signals and IF does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for receiving and transmitting coded light signals and IF, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for receiving and transmitting coded light signals and IF will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-554211