Indicated position recognizing apparatus and information input apparatus having same
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United States of America Patent
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Aug 3, 2010
Grant Date -
Oct 5, 2006
app pub date -
Feb 28, 2006
filing date -
Mar 29, 2005
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
At least one exemplary embodiment is directed to an image displaying apparatus, which includes a drawing-light-beam projecting unit, a scanning device, an indicating device, a light receiving device, and a position detecting device. The drawing-light-beam projecting unit projects a visible drawing light beam. The scanning device can two-dimensionally scan visible light and invisible light on a surface to be scanned. The indicating device can indicate any position on the surface to be scanned. The light receiving device can receive invisible light deflected by the indicating device and obtain a light receiving timing. The position detecting device can obtain the position indicated by the indicating device in an image projected by the drawing-light-beam projecting unit, on the basis of the light receiving timing.
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