| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology with which workability can be improved in the case where power is transferred from a plurality of power transmitting side mobile terminals to a power receiving side mobile terminal.SOLUTION: In the case where the remaining power of a battery is reduced to less than a predetermined value, a mobile terminal 1-1 broadcasts a power transmission possibility inquiry and receives power transmittable notifications from other mobile terminals 1-2, 1-4. Then, one transmission source of the power transmittable notification is selected and a power transmission request is transmitted to the selected transmission source. Thereafter, non-contact power transmission with the transmission destination of the power transmission request is started, power is received and the battery is charged. This process is repeated while selecting the transmission source of the power transmittable notification in the order from a greatest transmittable power amount designated in the power transmittable notifications. When the power transmission possibility inquiry is received, on the other hand, the mobile terminals 1-2, 1-4 having the remaining power of the battery equal to or more than the predetermined value transmit to the transmission source of the power transmission possibility inquiry the power transmittable notification with the designation of the transmittable power amount which is calculated by subtracting the predetermined value from the remaining power of the battery. Thereafter, when the power transmission request is received, power is transmitted to the transmission source without contact. |
