摘要 |
An input position detection device for detecting an input position of an input device, and an entertainment system which can detect the position of a subunit and has a display which displays an image generated by execution of a program loaded into the entertainment system. The entertainment system has a portable game terminal 3 held by the operator 7. The portable game terminal 3 is equipped with an infrared input/output unit 8 which sends infrared signals corresponding to the commands of the operator 7 to an infrared input/output device 4 which is connected to a monitor device 6. The infrared input/output device and the CCD camera 5 are disposed adjacent each other and point in the direction of the operator 7 holding the portable game terminal 3.; A game machine main unit 2 detects the position of the portable game terminal 3 based on the difference between an input image from the CCD camera 5 taken immediately before the operator 7, sends an infrared signal from the infrared input/output unit 8 of the portable game terminal 3 toward the infrared input/output device 4, and the input image at the time that the infrared signal is sent. |