Backlight automatic adjusting method and device for electronic device

Abstract

The invention discloses a backlight automatic adjusting method and device for an electronic device. The method comprises the steps of obtaining a backlight luminance reference value by obtaining the luminance of the current environment; calculating an average luminance value and the contrast ratio of an image according to the gray level of pixel points in the image currently displayed by the device, and obtaining a first backlight luminance adjusting valve and a second backlight luminance adjusting valve of the image; obtaining the backlight luminance of the image according to the backlight luminance reference value, the first backlight luminance adjusting valve and the second backlight luminance adjusting valve; obtaining the target backlight luminance of the image according to the backlight luminance and target backlight luminance obtained through calculation last time; adjusting backlight of the image according to the target backlight luminance. Thus, the problems in the prior art that the backlight power consumption of a display screen cannot be reduced to the largest extent and the duration of the electronic device cannot be prolonged to the largest extent can be solved, the plash screen phenomenon is avoided, the calculation amount is further reduced, and the DDR and CPU consumption is reduced.

Description

technical field [0001] The invention relates to the application field of electronic equipment, in particular to a method and device for automatically adjusting the backlight of electronic equipment. Background technique [0002] In recent years, electronic devices (such as smartphones, tablet computers, MP5, etc.) have become more and more popular. These devices are equipped with a display device, and the power consumption of the display device often accounts for a large part of the power consumption of the entire electronic device, even as high as 50%. However, low power consumption and long battery life are often a bottleneck and an important selling point of these electronic devices. Therefore, how to reduce the power consumption of the display device has become an important direction of low power consumption technology. [0003] Therefore, many electronic devices in the market now have a backlight adjustment function, and they often use a photosensitive device to obtai...

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a method and device for automatically adjusting the backlight of an electronic device, which is used to solve the problem that in the prior art, only the environmental brightness factor is considered, and the display content of the device is ignored, resulting in the inability to minimize the power consumption of the backlight of the display screen and the inability to The problem of maximizing the battery life of electronic devices

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