Huawei Device Co., Ltd.

Huawei Technologies Co., Limited

Wei Di

Yang Yang

Jie Zou

Jianjun Zhou

Tianpeng Wang

Yangbang Chen

Yiyong Pu

Lihong Ma

Maliang Liu

Liangang Sun

Mei Zou

Chuangao Yan

Long Wu

Qinghao Zhu

This application provides a touchscreen interference suppression method and apparatus, and a terminal device. In the method, when a touchscreen is in an untouched state, whether a wideband interference signal exists in the touchscreen is detected; and when the wideband interference signal exists, a detection bandwidth of a filter unit is reduced.

Touchscreen interference suppression method and apparatus, and terminal device

The present disclosure provides an interference reduction method and apparatus. The method includes obtaining a current communication frequency of a radio frequency system of an electronic device; and determining a first operating frequency of a first interface of the electronic device according to the current communication frequency, wherein a current radio frequency communication frequency of a current serving cell of the radio frequency system is not a multiple of a divide-by-four frequency of the first operating frequency.

Interference reduction method and apparatus

A surge protection circuit, a switching power supply, and a surge protection method are provided that can prevent a power supply from being damaged by a high energy surge voltage discharged from a terminal device to an output end of a power supply. The surge protection circuit is applied to the switching power supply. The power supply includes a transformer. The circuit includes a surge protection tube. When a surge voltage on the terminal device is greater than a discharge voltage of the surge protection tube, the surge protection tube is conducted and discharges the surge voltage on the terminal device to the ground wire end at the high voltage side of the transformer. The embodiments of the present invention are applicable to the field of electronic technologies.

Surge protection circuit, switching power supply, and surge protection method

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Shanghai, China

Wei Di