Patent ID: 11901744
Assignee: SEIKO EPSON CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 6:
7. A control device included in a power transmitting device that contactlessly transmits power to a power receiving device, the control device comprising:
a control portion configured to:
control a power transmission portion in the power transmitting device that transmits power to the power receiving device;
cause the power transmission portion to transmit a first signal having a first frequency and a first duty to the power receiving device during a time period having a first length, to issue a first communication data to the power receiving device; and
after causing the power transmission portion to transmit the first signal, cause the power transmission portion to transmit a second signal having a second frequency that is different from the first frequency or a second duty that is different from the first duty, during a time period having a second length that is different from the first length, to issue second communication data to the power receiving device.