| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve the power feeding efficiency of a system by selecting a transmission antenna from a plurality of the transmission antennas which can most efficiently feed power to a receiving antenna. <P>SOLUTION: A position and a direction of a capsule endoscope 20 in a human body are detected by a position/direction detection part 130, and the detected position/detection information is input into a controller 150. The controller 150 selects the transmission antenna (the transmission antenna which can feed the largest power to the capsule endoscope 20) which can make the capsule endoscope 20 receive the largest power from among the plurality of transmission antennas 112 to 114 on the basis of the detected position/direction information and magnetic field data which are held in a magnetic field storing part 151 in advance, and drives only the selected transmission antenna. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
