INTERACTIVE DISPLAY SYSTEM
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Nov 6, 2013
filing date -
May 30, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An interactive display system including a data processing unit, a display, a laser pointer, a translucent optical device, an image capture device, and an optical filter is disclosed. The laser pointer projects a laser beam on the translucent optical device attached to or built in a screen of the display. The laser beam has a specified wavelength within a visible light spectrum. The translucent optical device reflects most of the laser beam. The image capture device acquires under the data processing unit a sensed image including a part of a displayed object image within the specified wavelength and the reflected laser beam. The data processing unit determines a position of the laser beam relative to the displayed object image in accordance with light intensity distribution of the sensed image, calculates a distance vector between the determined position and a cursor, and moves the cursor according to the distance vector.
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