| 摘要 |
PROBLEM TO BE SOLVED: To provide a client device that detects other client devices not linked to a center device for enabling communication, and to provide a communication method of the client device and a communication system having the device. SOLUTION: In the client device connected to the center device for communication, when a detection signal from the center device is received, a response signal is transmitted to the center device. After linking to the center device, then a proxy detection signal is transmitted to another client device different from the client device. When a proxy response signal to the proxy detection signal is received from another client device, link with another client device is achieved. COPYRIGHT: (C)2007,JPO&INPIT
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