Electronic device and method for controlling wireless transmit power by detecting foreign object
US10673285B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2019 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Feb 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/00045
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Various embodiments related to electronic devices are set forth herein. According to an embodiment, an electronic device comprises a coil, a power transmitting circuit electrically connected with the coil, a sensing circuit, and a control circuit. The control circuit is configured to wirelessly output, using the power transmitting circuit, a first designated power through the coil to an external electronic device, and identify, using the sensing circuit, first energy detected at the coil due to a foreign object of the electronic device. The control circuit is further configured to, when a magnitude of the energy falls within a first designated range, output, using the power transmitting circuit, a second designated power to the external electronic device, and when the magnitude of the energy falls within a second designated range, abstain from outputting the power to the external electronic device using the power transmitting circuit. Other embodiments are possible as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.