| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a projector which can project a keyboard for detecting input of information by using visible light. <P>SOLUTION: The projector includes: a projection part 24 projecting a projection image including at least one input key for inputting designation information to a projection surface; an imaging part 10 picking up the image of the projection surface; an image analysis part 14 analyzing the picked-up image picked up by the imaging part; and an input detection part 16 detecting designation input by a position designating member for designating the position of the projection image projected to the projection surface when the image analysis part determines that shadow of the position designating member by light from a light source disappears, and specifying the input key displayed on the projection surface corresponding to the position designated by the position designating member by referring to positional relation between the picked-up image and the projection surface. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
