Patent ID: 11909227
Assignee: CANON KABUSHIKI KAISHA
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A power transmitting apparatus that wirelessly transmits power to a power receiving apparatus, comprising:
an obtaining unit configured to obtain a power loss on the basis of transmission power transmitted by the power transmitting apparatus and received power received by the power receiving apparatus;
a setting unit configured to, on the basis of transmission power set with the power receiving apparatus, set a first threshold for determining whether or not a foreign object exist, setting a second threshold lower than the first threshold, and set the first threshold and the second threshold so that a difference, between the first threshold and the second threshold, in a case where transmission power is set to a second power greater than a first power is greater than a difference, between the first threshold and the second threshold, in a case where transmission power is set to the first power; and
a determining unit configured to determine that a foreign object exists in a case where the power loss is greater than the first threshold, that a foreign object does not exist in a case where the power loss is less than the second threshold, and that there is a possibility of a foreign object existing in a case where the power loss is between the first threshold and the second threshold.