Invention Grant
- Patent Title: Power transmission apparatus, control method executed by power transmission apparatus, and storage medium
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Application No.: US16853056Application Date: 2020-04-20
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Publication No.: US11329512B2Publication Date: 2022-05-10
- Inventor: Hiroshi Mashimo
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A., Inc. I.P. Division
- Priority: JPJP2019-083243 20190424
- Main IPC: H02J50/12
- IPC: H02J50/12 ; H02J7/02 ; H02J50/80

Abstract:
When a communication unit receives an end power transfer (EPT) packet including information about a power transmission stop period from a power reception apparatus, a power transmission apparatus controls a power transmission coil to transmit a checking signal for checking existence of the power reception apparatus during the power transmission stop period, detects at least one of a voltage or a current applied to the power transmission coil when the checking signal is transmitted, and determines whether the power reception apparatus that has transmitted the EPT packet exists, based on the detection result.
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