公开(公告)号：US20220300064A1

公开(公告)日：2022-09-22

申请号：US17834710

申请日：2022-06-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhongjian CHEN ,  Xiaokun WANG ,  Shibin XU ,  Nianbing LI ,  Liangyi ZHANG

IPC: G06F1/3296

Abstract: This application discloses a voltage scaling method and an electronic device. The method is applied to an electronic device having a processor and a power supply that supplies power to the processor. The method includes the processor sending power supply scaling information to the power supply based on an operating frequency in a next time period. The method further includes the power supply determining, based on the power supply scaling information, a supply voltage Vout used to supply power to the processor. The supply voltage Vout decreases as a load current of the power supply increases. Vmin≤Vout≤V, where Vmin is a lowest supply voltage of the processor at the operating frequency in the next time period, and V is a specified supply voltage of the processor at the operating frequency in the next time period.

公开(公告)号：US20190130153A1

公开(公告)日：2019-05-02

申请号：US16095373

申请日：2016-04-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiafu HU ,  Jun YANG ,  Xiaokun WANG ,  Huabing CHEN

IPC: G06K9/00 ,  G06F21/32 ,  G06F3/044 ,  G06K9/62 ,  H05K5/06 ,  H04M1/02

Abstract: The present invention discloses a handheld electronic device, including a cover, a fingerprint sensor, and a light emitting unit. The fingerprint sensor and the light emitting unit are disposed inside the handheld electronic device. The cover includes a light transmitting area. The light emitting unit is disposed opposite to the cover and is adjacent to the fingerprint sensor, so that the light emitting unit can emit light through the light transmitting area, so as to indicate a location of an ultrasonic fingerprint sensor. The handheld electronic device disclosed in the present invention has better water-proof performance and dirt-repellent performance.

公开(公告)号：US20220271644A1

公开(公告)日：2022-08-25

申请号：US17743237

申请日：2022-05-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaokun WANG ,  Zhongjian CHEN

IPC: H02M1/00

Abstract: This application provides a load line circuit and an electronic device, where the load line circuit is applied to the electronic device. A voltage value of a feedback voltage provided by the load line circuit to a switch-mode power supply is linearly and positively correlated with each of a voltage value of a first voltage and a current value of a first current, where the first voltage is a voltage provided to a load circuit, and the first current is a current provided to the load circuit. Through disposition of the load line circuit, the switch-mode power supply can implement a load line function.