Screen state control method and device, mobile terminal and storage medium
A mobile terminal and screen state technology, applied in the fields of devices, mobile terminals, storage media, and screen state control methods, can solve problems such as detection result error, poor anti-interference ability, etc.
Active Publication Date: 2019-11-22
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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Problems solved by technology
However, at present, the anti-interference ability of proximity detection through ultrasonic detection scheme is poor. Therefore, when there is some ultrasonic noise interference in the environment, the detection result will have a large error
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[0024] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.
[0025] With the popularity of the full-screen design of mobile terminals, in order to save the top space of mobile terminals, more and more manufacturers have adopted ultrasonic proximity detection solutions on mobile terminals to replace traditional infrared proximity detection solutions. The mobile terminal emits ultrasonic waves through the ultrasonic wave sending device (such as earpiece, speaker, special ultrasonic transmitter, etc.), and part of the ultrasonic wave propagates through the air to the ultrasonic receiving device (pickup) (such as figure 1 Path 1), a part of the ultrasonic wave propagates through the air and is reflected by the object before reaching t...
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The invention discloses a screen state control method and device, a mobile terminal and a storage medium. The method comprises steps of when the mobile terminal is in a call state, transmitting an ultrasonic signal through an ultrasonic transmitting device; receiving an ultrasonic signal returned by the ultrasonic signal after the ultrasonic signal meets an object through an ultrasonic receiving device; obtaining a first attribute value of the ultrasonic signal in a transmission process, calculating a variance of the signal strength based on the first attribute value; and obtaining a second attribute value of the ultrasonic signal in the transmission process, calculating a Doppler effect area difference based on the second attribute value, judging a relative motion state of the mobile terminal and the object according to the variance of the signal intensity and the Doppler effect area difference, and controlling the display screen to be in a screen-on state or a screen-off state according to the relative motion state. The display screen is controlled to be in the screen-on state or the screen-off state by calculating the variance of the signal intensity of the ultrasonic signal andthe Doppler effect area difference, so that the accuracy of detection control is improved.
Description
technical field [0001] The present application relates to the technical field of mobile terminals, and more specifically, to a screen state control method, device, mobile terminal and storage medium. Background technique [0002] With the popularity of the full-screen design of mobile terminals, in order to save the top space of mobile terminals, more manufacturers have adopted ultrasonic proximity detection solutions on mobile terminals to replace traditional infrared proximity detection solutions. However, at present, the anti-interference ability of the proximity detection through the ultrasonic detection scheme is poor, so when there is some ultrasonic noise interference in the environment, the detection result will have a large error. Contents of the invention [0003] In view of the above problems, the present application proposes a screen state control method, device, mobile terminal and storage medium to solve the above problems. [0004] In the first aspect, the ...
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IPC IPC(8): H04M1/725
CPCH04M1/72454
Inventor 范辉
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD