发明名称 |
WIRELESS INTRACORPORAL INFORMATION ACQUIRING SYSTEM |
摘要 |
A transmitting and receiving apparatus (2) that transmits a radio signal to a capsule endoscope includes: a transmitting level determining unit (25) disposed near a transmitting resonance circuit (22); a frequency controller (26) that controls an oscillation frequency based on a result of determination executed by the transmitting level determining unit (25); and a frequency variable oscillator (16) that changes the oscillation frequency, based on the control of the frequency controller (26). By changing the oscillation frequency so that a transmission level becomes large, the oscillation frequency can be changed so as to decrease a frequency difference between the oscillation frequency and the resonance frequency of the resonance circuit (22) that changes along a variation in a self inductance value of a coil (24).
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申请公布号 |
EP1839551(A1) |
申请公布日期 |
2007.10.03 |
申请号 |
EP20050703994 |
申请日期 |
2005.01.21 |
申请人 |
OLYMPUS CORPORATION |
发明人 |
SHIMIZU, HATSUO;HONDA, TAKEMITSU;HASHIMOTO, MASAYUKI;NAKATSUCHI, KAZUTAKA |
分类号 |
A61B1/00 |
主分类号 |
A61B1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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