Huawei Technologies Co., Limited

Yi Xi

Hui Li

Sulin Yang

Ao Shen

Wenxiong Wei

Zhi Guo

Rongguang Yang

Yi Hu

Kelin Li

Shiyou Sun

Xiaodong Ni

Yongtao Cui

Dan Su

Deng Li

Yumin Liu

A light-emitting device driving circuit includes: a voltage conversion circuit, at least one light-emitting device, a current driving circuit, and a controller. Any light-emitting device and the current driving circuit are coupled in series between an output terminal and a ground terminal of the voltage conversion circuit. The controller is configured to output a first control signal to the current driving circuit, the current driving circuit is configured to provide a predetermined current for a first light-emitting device based on the first control signal, the controller is configured to output a second control signal to the voltage conversion circuit based on an electrical parameter on a path on which the first light-emitting device and the current driving circuit are located, and the voltage conversion circuit is configured to adjust a voltage at the output terminal of the voltage conversion circuit based on the second control signal.

Light-emitting device driving circuit, PPG sensor, and electronic device

A wearable device includes a screen, a first electrode, a second electrode, and a circuit board. The screen and the second electrode are mounted on a housing. The first electrode is coupled to the screen and does not shield a display region of the screen, and the first electrode and the second electrode are electrically coupled by the circuit board. The first electrode has a first surface, the second electrode has a second surface, and the first surface and the second surface are configured to contact a human body of a wearer.

Wearable device

A smart wearable device includes a detection apparatus and a case, the detection apparatus specifically includes one set of measuring parts and a plurality of sets of light emitting parts; the one set of measuring parts and the plurality of sets of light emitting parts are inlaid into the case and arranged into a polygon, where each of the plurality of sets of light emitting parts and the one set of measuring parts each occupies one of a plurality of angles of the polygon, and a central position of the polygon is at a specified distance to each angle of the polygon. A specific embodiment of the present invention provides a smart wearable device. One set of measuring parts and a plurality of sets of light emitting parts are disposed into a case and arranged into a polygon.

Smart wearable device

Growing community of inventors

Shenzhen, China

Yi Xi