Beijing Xiaomi Mobile Software Co., Ltd.

Xiaomi Inc.

Nannan Wang

Chiafu Yen

Dawei Xiong

Guosheng Li

Lei Zhang

Lin Dai

Yen Chiafu

Liujun Zhang

Peng Zhang

A method for microphone selection, applied in a mobile device having at least two microphones, the method includes: transmitting, by using an ultrasonic transmitter of the mobile device, first ultrasonic waves within a testing box, wherein the first ultrasonic waves are transmitted with a predefined transmission strength and at different frequencies selected from a predefined frequency range; acquiring, by using each of the at least two microphones to receive second ultrasonic waves reflected from the first ultrasonic waves within the testing box, frequency response values of the second ultrasonic waves received by each of the at least two microphones; and determining one of the at least two microphones which has a highest frequency response value, as a microphone for receiving ultrasonic waves for the mobile device.

Methods, devices, and computer-readable medium for microphone selection

A method and a device are provided for optimizing a sound signal in the field of voice signal processing. The device includes at least two sound collecting units. In the method, the device locates one or more sound sources via the at least two sound collecting units. The device selects a designated sound source among the one or more sound sources. The device determines a sound signal emitted from the designated sound source among sound signals collected by the sound collecting units according to a spatial position of the designated sound source. The device optimizes the sound signal emitted from the designated sound source.

Method and device of optimizing sound signal

The present disclosure relates to a method, device and storage medium for controlling a screen state. The method includes: transmitting an ultrasonic transmission-signal for N times within a preset time period when detecting that an ultrasonic sensing function of the terminal is enabled, N being an integer greater than 1; receiving an ultrasonic receipt signal; generating N determination results of whether the terminal is covered, wherein each of the N determination results is based on one of the N times transmission of the ultrasonic transmission-signal and receipt of the corresponding ultrasonic receipt signal; and determining that the terminal is covered and switching the screen state of the terminal from a turn-on state to a turn-off state, when at least one of the N determination results indicates that the terminal is covered. In the technical solution, whether the terminal is covered is determined by obtaining a value of the determination result for successive multiple times within a certain time period. Thus, it may improve the accuracy of the determination, and overcome the defects in the related art where incorrect determination causes misjudgment operation such as a screen flickering. As a result, user experience can be improved.

Method, device and storage medium for controlling screen state

A display method and a display device are disclosed. The method includes: detecting whether a displayed content in a display screen changes; controlling the display screen to update alternately display data respectively corresponding to a first part and a second part of a display unit in each column of display unit, in response to detecting that the displayed content does not change. The number of updated pixels of the display screen each time may be reduced, while the original refresh frequency is maintained, so the problem that the splash screen phenomena is caused in the display screen by reducing the refresh frequency of the display screen may be solved, thus achieving effects of avoiding the splash screen phenomena of the display screen and of reducing the power consumption of the display screen while maintaining the original refresh frequency of the display screen.

Growing community of inventors

Beijing, China

Nannan Wang