Huawei Technologies Co., Limited

Huawei Device Co., Ltd.

Huawei Device (dongguan) Co., Ltd.

Zhonghui Peng

Yang Gao

Wei Su

Heng Wang

Yonggang Wang

Zhiqiang Zhang

Jiangtao Yang

Lin Hu

Huogen Kuang

Hai Bo Jiang

Wenju Liu

Yudi Zhou

Dongjin Chen

Kedi Tang

Depeng Kou

Yao Yuan

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.

Charging circuit and terminal for wired and wireless charging

Embodiments of the present invention provide a method, an apparatus, and a system for supplying power to an active noise reduction headset The method for supplying power to an active noise reduction headset includes: receiving a signal of first voltage transmitted by the terminal; processing the signal of the first voltage to obtain a signal of second voltage, where the second voltage is less than the first voltage, and the signal of the second voltage is transmitted to a noise reduction chip of the active noise reduction headset, so that the noise reduction chip of the active noise reduction headset acquires the signal of the second voltage to implement a noise reduction function. The method, apparatus, and system for supplying power to an active noise reduction headset provided in the embodiments of the present invention are used to supply power to the active noise reduction headset.

Method, apparatus, and system for supplying power to active noise reduction headset

A mobile device with the NFC function includes an NFC chip, multiple SIM card slots, a power supply unit, and an eSE integrated into the NFC chip. One SIM card slot is connected to a first power port on the NFC chip. The power supply unit is connected to a second power port on the NFC chip. When the mobile device performs near field communication, the second power port on the NFC chip is triggered to output a first level signal. Each of the rest SIM card slots is connected to the power supply unit. The eSE is connected to the power supply unit. The power supply unit is configured to supply power to the eSE and the SIM card slot that is connected to the power supply unit, when the first level signal is received.

Mobile device with near field communication function

A smart card connection circuit of an electronic device which includes a card holder, a travel switch, and a switching unit; a contact of the travel switch is located in the card holder, and an output end of the travel switch is connected to a control end of the switching unit; and when a smart card at a preset position in the card holder leaves the preset position, the smart card leaves the contact of the travel switch, the travel switch controls the switching unit to switch to a second output end, and each signal cable pin on the card holder is grounded by using the switching unit before a power cable pin on the card holder is grounded by using the switching unit. The present invention is applied to electronic devices such as a mobile phone and a tablet computer.

Smart card connection circuit of electronic device and electronic device

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Shanghai, China

Zhonghui Peng