| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motion detection system, a motion detection apparatus, a motion detection method and computer program. <P>SOLUTION: The present invention relates to a motion detection system comprising a radio terminal 30 and a motion detection apparatus 20 that is communicable with the radio terminal via a wireless network, wherein when signals for detection transmitted in predetermined frequency by the motion detection apparatus are received, the radio terminal transmits an acknowledgement signal with respect to each of the signals for detection and the motion detection apparatus includes a measuring unit 230 for measuring signal strength of the acknowledgement signal transmitted from the radio terminal and a detection unit 260 for detecting a motion of the radio terminal on space based on the signal strength of the acknowledgement signal measured by the measuring unit. <P>COPYRIGHT: (C)2008,JPO&INPIT |
