Projection display system with pressure sensing at screen, and computer assisted alignment implemented by applying pressure at displayed calibration marks
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United States of America Patent
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Oct 30, 2007
Grant Date -
Dec 30, 2004
app pub date -
Apr 27, 2004
filing date -
Oct 21, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An interactive display system comprising a touch sensitive display surface for sensing pressure applied thereto and in response generating control signals indicating locations of the applied pressure, a personal computer for receiving the control signals and in response generating graphic images, and an LCD panel in combination with an overhead projector for receiving and projecting the graphic images onto the touch sensitive display surface at the indicated locations. The LCD panel and overhead projector may be provided an integral unit.
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