公开(公告)号：US11489371B2

公开(公告)日：2022-11-01

申请号：US16934511

申请日：2020-07-21

Applicant: Samsung Electronics Co., Ltd.

Inventor： Taehyun Woo ,  Yongsik Nam ,  Youngjoon Park ,  Jungsu Park ,  Woojin Jung

IPC: H02J50/80 ,  H02J50/10

Abstract: A wireless charging device in communication with an electronic device is provided. The wireless charging device includes a charging circuit configured to communicate with the electronic device at a first frequency that is included in a frequency band of the electronic device and supple power received from an external power source to the electronic device depending on a communication result at the first frequency, and a control circuit configured to convert the first frequency, based on a response of the electronic device to a first connection signal that is transmitted from the charging circuit to the electronic device.

公开(公告)号：US11289951B2

公开(公告)日：2022-03-29

申请号：US16711262

申请日：2019-12-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mincheol Ha ,  Dongzo Kim ,  Kwangseob Kim ,  Kihyun Kim ,  Jihye Kim ,  Yunjeong Noh ,  Jungsu Park ,  Kyungmin Lee ,  Woojin Jung ,  Yongsang Yun

IPC: H02J50/60 ,  H02J50/10 ,  H02J7/00

Abstract: An electronic device including a coil, a power transmission circuit electrically connected with the coil, a detection circuit, and a control circuit. The control circuit of the electronic device configured to wirelessly output a first signal for identifying an access of a foreign object by first period intervals through the coil using the power transmission circuit, identify a change of the first signal using the detection circuit, wirelessly output the first signal by the first period intervals in response to a detection value of the changed first signal being less than or equal to a first threshold value, and wirelessly output the first signal by a second period intervals longer than the first period intervals in response to the detection value of the changed first signal exceeding the first threshold value.