公开(公告)号：US20220366159A1

公开(公告)日：2022-11-17

申请号：US17876743

申请日：2022-07-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiangtao YANG

IPC: G06K7/00

Abstract: An electronic device includes a card interface and a processing module. The card interface is electrically connected to the processing module, and a SIM card or a memory card may be inserted into the card interface. The card interface includes 8 springs, where N>1; when a memory card is inserted into the card interface, the memory card is electrically connected to the processing module; and when a SIM card is inserted into the card interface, the SIM card is electrically connected to the processing module, and one metal pin of the SIM card is electrically connected to a first spring in the N springs and one spring adjacent to the first spring. The processing module is configured to determine, based on at least a level of the first spring, that an inserted card is a SIM card or a memory card.

公开(公告)号：US20220328469A1

公开(公告)日：2022-10-13

申请号：US17852476

申请日：2022-06-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Huaifeng WANG ,  Jiangtao YANG ,  Hang WANG

IPC: H01L27/02 ,  H03K19/003 ,  H02H9/04

Abstract: This application relates to a charging protection circuit. The charging protection circuit implements overcurrent protection by using a four-terminal NMOS switching transistor. In the solution provided in this application, floating management is performed on a Sub port of the four-terminal NMOS switching transistor. Specifically, when the four-terminal NMOS switching transistor is turned on, potential of the Sub port is pulled up, to avoid an excessively large internal resistance of the four-terminal NMOS switching transistor caused by an excessively large voltage between the Sub port and a drain of the four-terminal NMOS switching transistor. In addition, this application further provides a charging circuit and an electronic device.

公开(公告)号：US20240356381A1

公开(公告)日：2024-10-24

申请号：US18758006

申请日：2024-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Shaojie FENG ,  Zhongnan QIAN ,  Yongfa ZHU ,  Xiaowei CHEN ,  Quanhao SUN ,  Zhiqiang DUAN ,  Jiangtao YANG

IPC: H02J50/40 ,  H02J50/00 ,  H02J50/05 ,  H02J50/70

CPC classification number: H02J50/402 ,  H02J50/005 ,  H02J50/05 ,  H02J50/70

Abstract: This application provides a wireless charging transmitting apparatus, a wireless charging receiving apparatus, and a system thereof. The wireless charging transmitting apparatus includes an inverter circuit, a first transmitting plate, and a second transmitting plate. The wireless charging receiving apparatus includes a first receiving plate, a second receiving plate, and a rectifier circuit. An input end of the inverter circuit is connected to a direct current power supply, a first output end of the inverter circuit is connected to the first transmitting plate, and a second output end of the inverter circuit is connected to the second transmitting plate. A first contact is disposed on the first transmitting plate, and a second contact is disposed on the first receiving plate. When the first contact is in contact with the second contact, the first transmitting plate establishes an electrical connection to the first receiving plate.

公开(公告)号：US20200004709A1

公开(公告)日：2020-01-02

申请号：US16474655

申请日：2017-04-11

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Feng LIU ,  Jiangtao YANG ,  Jianjun XU

IPC: G06F13/38 ,  H01R13/66 ,  G06F21/44

Abstract: Example adaption apparatus are described. An example adaption apparatus includes a first USB interface and a second USB interface. A power signal of the first USB interface is electrically connected to a power signal of the second USB interface. A first channel configuration signal of the first USB interface is electrically connected to an ID signal of the second USB interface using a first resistor. The ID signal of the second USB interface is electrically connected to the power signal of the second USB interface using a second resistor. A resistance value of the first resistor meets a criterion followed by a first device to identify a UFP device according to the USB Type-C protocol. A sum of the resistance value of the first resistor and a resistance value of the second resistor meets a criterion followed by the first device to identify a DFP device according to the USB Type-C protocol.