Receiver-transmitter device for transmitting data by means of fo

Details Receiver-transmitter device for transmitting data by means of fo Receiver-transmitter device for transmitting data by means of fo

1975-11-06

1979-03-06

Griffin, Robert L.

Radiant energy

Ionic separation or analysis

Static field-type ion path-bending selecting means

332 751, 343 18D, H04B 900

Patent

active

041432630

ABSTRACT:
A receiver-transmitter system having a retro-reflector for reflecting an encoded input laser beam back toward the source thereof, an electro-optical mask for selectively masking the retro-reflector, and a mask control system operable by an input beam sensor for unmasking the retro-reflector if the input beam has a predetermined encoded input and for pulse modulation of the reflected beam with the electro-optical mask for transmitting data back to the input beam source.

REFERENCES:
patent: 3039093 (1962-06-01), Rockwood
patent: 3433960 (1969-03-01), Minott
patent: 3493294 (1970-02-01), Fitzmauricz et al.
patent: 3584220 (1971-06-01), Nomura
patent: 3633158 (1972-01-01), Heibel
patent: 3863064 (1975-01-01), Doyle et al.
patent: 3989942 (1976-11-01), Waddoups

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