| 摘要 |
A robotic game apparatus comprises a CRT display. A robot has a photo detector which faces a screen of the CRT display and detects an image on the screen. On the screen of the CRT display, images which differ, for example, in brightness or the like are formed in response to different codes. The photo detector of the robot generates a code signal responding to a change in image brightness or the like. This code signal is decoded, and motors or the like are controlled to cause corresponding movements of the arms and body of the robot.
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