Position detecting device, position detecting system, and controlling method of position detecting device
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United States of America Patent
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Oct 2, 2018
Grant Date -
Jul 23, 2015
app pub date -
Jan 16, 2015
filing date -
Jan 21, 2014
priority date (Note) -
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Abstract
A projector includes a light output device outputting detection light on a screen, a position detection unit detecting an indication position, and a calibration control unit. The position detection unit performs a first detecting operation detecting an indication position by using the detection light, and a second detecting operation detecting an indication position by using light other than the detection light. The calibration control unit executes calibration associating a position detected in the second detecting operation with a position on the screen, and restricts output of the detection light while the calibration is executed.
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