| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power transmission controller and the like capable of realizing proper detection processing even when elements have variations, and the like. <P>SOLUTION: The power transmission controller provided in a power transmission apparatus of a non-contact power transmission system includes an amplitude detection circuit for detecting amplitude information of an induced voltage signal of a primary coil, an A/D conversion circuit for performing A/D conversion of the amplitude information, and a control circuit. The A/D conversion circuit performs A/D conversion of a detected voltage, detected at a conversion timing, with the conversion timing being a timing t2, after a given period TP has expired from a timing t1 when the detected voltage has exceeded a provisional voltage SIGH0, and obtains digital data of a reference threshold voltage SIGHV. The control circuit performs at least one of data detection for detecting data that has been transmitted from a power receiving device from among means of load modulation, foreign object detection, and detachment detection using the digital data of the reference threshold voltage SIGHV. <P>COPYRIGHT: (C)2009,JPO&INPIT |
