Patent ID: 9692249
Date: 2017-06-27
CPC Classifications: H02J

Claim:
1. A power transmission device for wirelessly supplying power to a power receiving device located in a power supply area, the power transmission device comprising: a first determining unit configured to determine whether a power receiving device exists in the power supply area; a first transmitting unit configured to, in a case where the first determining unit determines that the power receiving device does not exist in the power supply area, transmit, to the power receiving device, a first notification prompting a user to move the power receiving device into the power supply area; a second determining unit configured to determine, in a case where the first determining unit determines that the power receiving device exists in the power supply area, whether a second notification prompting a user to further move the power receiving device needs to be transmitted to the power receiving device; and a second transmitting unit configured to transmit the second notification to the power receiving device in a case where the second determining unit determines that the second notification needs to be transmitted to the power receiving device, wherein, in a case where the second determining unit determines that the second notification does not need to be transmitted to the power receiving device, the second transmitting unit does not transmit the second notification to the power receiving device.