| 摘要 |
<p>Provided is a power transmitting apparatus, which can start power transmission even in the cases where there is not even residual power with which a power receiving apparatus requests power transmission, in a wireless power transmission system, in which a plurality of power transmitting apparatuses and a plurality of power receiving apparatuses are mainly using a same frequency as a power transmission frequency. A power transmitting apparatus (300) has sub-power transmission mode, and main power transmission mode for transmitting power larger than that transmitted in the sub-power transmission mode. A power transmitting unit (310) transmits power in a wireless manner. A power transmission control unit (320) controls, in sub-power transmission mode, power to be transmitted by means of the power transmitting unit (310) and transmission timing of the power transmission such that at least power that the receiving apparatus needs to transmit power request notification is transmitted at random intervals. A power transmission control unit (320) performs switching to the main power transmission mode, in the cases where a communication unit (350) acquired the power request notification transmitted from the power receiving apparatus.</p> |
