Optical decoder
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 31, 1987
Grant Date -
N/A
app pub date -
Apr 1, 1985
filing date -
Apr 1, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical decoder to permit differentiating between at least two flashing spots displayed on a cathode ray tube screen is provided by a photosensor and an electrical circuit which is responsive to the absence of flashes during a flashing sequence which is different for the two spots and not distinguishable by the naked eye.
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