Huawei Technologies Co., Limited

Huawei Device (dongguan) Co., Ltd.

Huawei Device Co., Ltd.

Jiangtao Yang

Hang Wang

Huaifeng Wang

Feng Liu

Jianjun Xu

Zhonghui Peng

Wenju Liu

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.

Charging protection circuit, charging circuit, and electronic device

A card socket configured for placing a subscriber identification module (SIM) or a memory card includes a first interface, where the first interface is coupled to the SIM or the memory card through a switch. The first interface is further coupled to a first terminal of the switch. A SIM system is coupled to a second terminal of the switch. A memory card system is coupled to a third terminal of the switch. A detection circuit is configured to detect that a card placed in the terminal device is a SIM or a memory card. A control circuit controls the first terminal of the switch to couple to the second terminal of the switch or controls the first terminal of the switch to connect to the third terminal of the switch, based on a detection result of the detection circuit.

Memory card, memory card adapter, and terminal device

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 N springs, where N&#x3e;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, whether an inserted card is a SIM card or a memory card.

Electronic device

A memory card and a terminal, where the memory card includes a storage device, a controller, and a memory card interface. The storage device and the controller are disposed inside a card body of the memory card. The memory card interface is disposed on the card body of the memory card. The controller is electrically coupled to the storage device and the memory card interface separately. Because a shape of the memory card is the same as that of a nano subscriber identity module (SIM) card, and a size of the memory card is the same as that of the nano SIM card, a nano SD card is provided.

Memory card and terminal

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&#x3e;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.

Memory card

Card

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.

Adaption apparatus, and device identification method and apparatus

The present invention disclose a charging circuit including: a first input/output end of a wired connection module is configured to connect to an output end, a second input/output end of the wired connection module connects to a first input end of a switch circuit, and the second input/output end connects to a first input/output end; a first input end of a control circuit connects to the second input/output end, and an output end connects to an enabling end of a wireless charging module; an output end connects to a second input end of the switch circuit; a first output end connects to an input/output end; a second input/output end of the shunt circuit connects to the input/output end, a third end of the shunt circuit connects to the output end; an output end of the charging management module is configured to connect to a battery.

Growing community of inventors

Shanghai, China

Jiangtao Yang