Touch screen input system
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United States of America Patent
Stats
-
Jul 25, 1989
Grant Date -
N/A
app pub date -
Jan 3, 1966
filing date -
Jan 3, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A touch screen input system for use with a display screen having a photo-active display surface including a controllable sweeping beam. The system includes at least one photo-detector in combination with detection circuitry for continuously registering the position of the beam in the display surface. A pointer is adapted to reflect light from the beam to the photo-detector to provide a latch signal which is used to hold a signal identifying display screen location corresponding to pointer means location.
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Family
International Classification(s)
Cited Art Landscape
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