Method and system for automatically adjusting backlight brightness

Abstract

The invention discloses an automatic backlight brightness adjustment method and system. The automatic backlight brightness adjustment method comprises the following steps: a mobile terminal acquires a current environment light intensity value of every other timeout and adjusts the backlight brightness of the mobile terminal according to the current environment light intensity value; the absolute value of the difference value between the current environment light intensity value and the environment light intensity value obtained before the timeout is computed, and if the absolute value is greater than a preset threshold value, the timeout for acquiring the current environment light intensity value next time is set according to a corresponding function relationship between the absolute value and the timeout. According to the invention, the problem that the backlight brightness is adjusted repeatedly because the light intensity of the surrounding environment of the mobile terminal continuously changes is solved, so that the electrical energy saving effect is truly realized, and great convenience is brought to a user.

Description

technical field [0001] The invention relates to the field of communication applications, in particular to a method and system for automatically adjusting the brightness of a backlight. Background technique [0002] At present, mobile terminals have widely used light sensors to detect the ambient light intensity around the mobile terminal, so as to automatically adjust the backlight brightness of the mobile terminal according to the ambient light intensity, so as to achieve the purpose of saving power and making the screen display content clearly visible. [0003] However, this method has drawbacks: when the light intensity in the environment changes at a relatively fast frequency (such as sitting by the window of a speeding train, etc.), the backlight brightness of the mobile terminal will be adjusted repeatedly, making the user feel that the screen brightness is always changing. Changes, not only did not save power but also caused inconvenience to users. [0004] Therefore...

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Problems solved by technology

[0005] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a method and system for automatically adjusting the brightness of the backlight, which can determine the timeout time for changing the brightness of the backlight according to the ambient light intensity collected twice adjacently, thereby solving the problem of mobile terminals The problem that the brightness of the backlight is constantly changing in the environment with complex lighting

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