Radiant energy – Invisible radiant energy responsive electric signalling – Semiconductor system
Patent
1988-12-23
1990-07-31
Hannaher, Constantine
Radiant energy
Invisible radiant energy responsive electric signalling
Semiconductor system
2503381, 250339, G01J 500, G01J 510
Patent
active
049452444
ABSTRACT:
An infrared sensing device is capable of sensing the amount of infrared radiation which is present at a given location and presenting a visual indicia of the strength of the signal. A series of led's which light up in a bar graph fashion indicate the strength of the signal. The device also has a remote sensor which allows the sensing to be done at a location away from the position of the visual signal strength indicator.
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Memorex Corporation, Memorex CP.sup.8 Universal Remote Control Owner's Manual, pp. 3-35.
Sony Corporation, Sony Video Cassette Recorder Beta hi-fi SL-2700/2700B, 1983, pp. 2-43.
Eisenberg Jacob M.
Hannaher Constantine
Kearns Jerry T.
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