| 摘要 |
PURPOSE:To enable speedy and direct position designation by irradiating a screen with a light beam from a light beam irradiation gum integrated with a semiconductor laser, and advancing a game while detection the irradiated position. CONSTITUTION:A screen 6 is irradiated with the light beam from a light beam irradiation gun 7 integrated with the semiconductor laser, and the game is advanced while detecting such an irradiated position P. Then, the screen 6 is a rear projection type screen and an image pickup device 1 to measure the position P irradiated with the above-mentioned light beam and a photodetector 3 to transmit a signal loaded on the above-mentioned light beam are built in. As the result, the position can be designated independently, speedily and directly. |
