公开(公告)号：US10804728B2

公开(公告)日：2020-10-13

申请号：US16189824

申请日：2018-11-13

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dong Zo Kim ,  Se Hyun Cho ,  Min Cheol Ha ,  Yong Sang Yun ,  Kwang Seob Kim ,  Ji Won Kim ,  Hye Won Kim ,  Chang Hak O ,  Kyung Woo Lim ,  Byeong Hyun Jang ,  Kuk Hwan Jung ,  Hyung Koo Chung

IPC: H02J7/00 ,  H02J7/02 ,  H02J50/12 ,  H04B5/00 ,  H02J50/80 ,  H04W4/80

Abstract: An electronic device includes a battery, a power regulator electrically connected with the battery and including an input terminal and an output terminal, a connector electrically connected with the input terminal, a wireless power transmitting circuit electrically connected with the output terminal, a switch electrically connected between the connector and the wireless power transmitting circuit, and a controller configured to identify an approaching external electronic device or a wireless charging-related request, identify whether power is provided from an external power supply via the connector in response to the identification, in response to identifying that power is not provided from the external power supply, supply power from the battery via the power regulator to the wireless power transmitting circuit, and in response to identifying that power is provided from the external power supply, supply the power provided from the external power supply to the wireless power transmitting circuit via the switch.

公开(公告)号：US10938243B2

公开(公告)日：2021-03-02

申请号：US16328361

申请日：2017-08-22

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dong Zo Kim ,  Kyoung Won Kim ,  Han Seok Park ,  Se Ho Park ,  Yu Su Kim ,  Keum Su Song ,  Ju Hyang Lee ,  Hyung Koo Chung ,  Kyung Min Park ,  Yong Sang Yun

IPC: H01F27/42 ,  H01F37/00 ,  H01F38/00 ,  H02J50/12 ,  H02J7/02 ,  H04B5/00

Abstract: A power transmitting unit is provided. The power transmitting unit includes a signal generator configured to generate a signal of a first frequency band for wireless charging, a power generation circuit configured to generate a modulation signal for modulating the signal of the first frequency band generated by the signal generator, and amplify a transmit power of the signal of the first frequency band based on voltage supplied from the outside of the power transmitting unit, a power transmission circuit configured to transmit the amplified transmit power to a power receiving unit via a first antenna, a second antenna configured to receive information about a charging state from the power receiving unit through a second frequency band, and a control circuit configured to control a duty and frequency of the modulation signal based on the charging state.