Huawei Technologies Co., Limited

Huawei Device Co., Ltd.

Fengxin Wang

Zhengyuan Hu

Kai Zhang

Jian Shen

Shengcai Liu

Changqi Li

Lixiang Zheng

Nan Lu

Wanbao Peng

Nanxue Gong

Jiacong Zhang

A touch detection drive circuit in an electronic device inputs a touch excitation signal to a touch electrode, and receives a detection signal of the touch electrode. An isolation power supply circuit receives the touch excitation signal and a primary power supply voltage; based on the touch excitation signal in a non-touch detection phase, short-circuits a first reference ground and a second reference ground, stores the primary power supply voltage, and transmits the primary power supply voltage to the touch detection drive circuit; and in a touch detection phase, disconnects the first reference ground from the second reference ground and discharges to the touch detection drive circuit.

Electronic device, control method for electronic device, touch system, and chip system

A touch detection drive circuit in an electronic device inputs a touch excitation signal to a touch electrode, and receives a detection signal of the touch electrode. An isolation power supply circuit: receives the touch excitation signal and a primary power supply voltage; based on the touch excitation signal in a non-touch detection phase, short-circuits a first reference ground and a second reference ground, stores the primary power supply voltage, and transmits the primary power supply voltage to the touch detection drive circuit; and in a touch detection phase, disconnects the first reference ground from the second reference ground and discharges to the touch detection drive circuit.

Electronic device and control method thereof, touch control system, and chip system

A self-loop detection method for a charging device includes switching a positive signal cable Dand a negative signal cable Dfrom a connected state to a disconnected state; and detecting whether a positive signal cable Dand a negative signal cable Dare switched from a connected state to a disconnected state; and if yes, determining that a self-loop exists in the charging device.

Self-loop detection method and apparatus for charging device

Embodiments of the present invention disclose a charging and discharging management apparatus and a mobile terminal. The charging and discharging management apparatus may include a charging and discharging management chip, primary battery positive and negative electrode contacts, secondary battery positive and negative electrode contacts, and electronic switches connected to the primary battery positive and negative electrode contacts and the secondary battery positive and negative electrode contacts, a detecting unit configured to detect in-place states of a primary battery and a secondary battery, and an electronic switch controlling unit connected to the detecting unit and configured to control the electronic switches to be on/off according to the in-place states of the batteries to enable the charging and discharging management chip to perform charging and discharging management for a battery in place.

Charging and discharging management apparatus and mobile terminal

The present invention relates to a method, an apparatus, and a system for processing a voice service. The method includes: judging whether a PSTN service exists on an access line of a main node; if no PSTN service exists, closing a switch component on the access lines of the main node so that the PSTN service on a branch node is transmitted to an HGW on the main node through the switch component and the HGW converts the PSTN service into a service based on a packet format and transmits the service based on the packet format. When the PSTN service is carried on the PS domain, no information needs to be exchanged with the network side, thus preventing impact caused by the failure at the network side and improving stability of the apparatus.

Growing community of inventors

Xi'an, China

Fengxin Wang