| 摘要 |
PROBLEM TO BE SOLVED: To improve operability of a position specifying apparatus to be used in a projection image projected by a projection device.SOLUTION: In a projection system, an electronic pen 30 includes: a camera 32 for detecting a position pointed on a projection image by the electronic pen 30; a communication section 320 for transmitting pointed position information indicating a pointed position, to a projector 20; a photoelectric conversion section 34 which converts reflected light from a first projection area near the pointed position on the projection image, to electric power; and a secondary battery 326 to be charged with the converted electric power. The projector 20 includes: a projection section 230 which emits projection light to project the projection image to a projection medium; a communication section 223 which receives the pointed position information from the electronic pen 30; and a control section 215 which performs luminance control to set a luminance of the first projection area, which has been determined by the pointed position information, to be higher than a luminance of a second projection area other than the first projection area in the projection image.SELECTED DRAWING: Figure 2 |
