| 摘要 |
<p>A field sequential color porjector (1) includes an area sensor unit (2) having an area sensor for photographing a screen, and an optical filter for permitting only a red light having the same color as a beam from a laser pointer to be input to the area sensor, and a color period/timing extraction unit (5) which extracts timing for projecting red, green, and blue images. When a projection timing for a red image arrives while and image is projected, an MPU (Micro Processor Unit) (6) receives a light of an image projected on the screen at that time to acquired image information. Even if there exists a portion having the same color as the laser beam in the projected image, a pointed position detection device accurately detects the position irradiated by a pointing light of the laser pointer.</p> |
