Method for controlling automatic backlight of display screen

A display screen and automatic technology, applied in the direction of user/computer interaction input/output, instrument, character and pattern recognition, etc., to improve reliability and accuracy, simplify recognition and analysis process, and reduce missed detection rate

Active Publication Date: 2013-04-03
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Abstract
  • Description
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  • Method for controlling automatic backlight of display screen
  • Method for controlling automatic backlight of display screen

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Embodiment Construction

[0033] The present invention will be further described in detail below through embodiments in conjunction with the accompanying drawings.

[0034] see figure 1 , in some embodiments, the method for controlling the automatic backlight of the display screen includes the following steps:

[0035] Step a. Turn on the front camera at a predetermined time before the automatic backlight off screen;

[0036] Step b. Graying the image acquired by the camera;

[0037] Step c. Binarize the grayed image;

[0038] Step d. analyzing whether there are predetermined facial organs or objects in the binarized image;

[0039] Step e. If there is a predetermined facial organ or object detected in the image, it is considered that the user is browsing the information on the device at this time, and does not want the system to automatically backlight at this time. At this time, reset the backlight time of the system and delay the automatic backlight off screen , if no predetermined facial parts ...

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Abstract

The invention provides a method for controlling the automatic backlight of a display screen. The method for controlling the automatic backlight of the display screen comprises the following steps: a, starting a camera at a predetermined moment before the automatic backlight for screen standby; b, graying a picture obtained by the camera; c, performing binaryzation on the grayed picture; d, analyzing whether predetermined facial organs or objects exist in the binaryzation picture; e, delaying the automatic backlight for screen standby in the case where the predetermined facial organs or objects exist in the picture, and returning to the step b till the arrival of a moment of the automatic backlight for screen standby in the case where no predetermined facial organs or objects exist in the picture. In comparison with the traditional method for controlling backlight brightness through a human face, the method for controlling the automatic backlight of the display screen can enable a user to be identified more simply and more reliably, so that the automatic backlight of the display screen is controlled efficiently and correctly.

Description

technical field [0001] The invention relates to a method for controlling the automatic backlight of a display screen. Background technique [0002] Current mobile terminal devices such as mobile phones generally have an automatic backlight time setting function. If the user does not perform any operations on the mobile phone within the specified time, the backlight will dim at this time, and the screen will be turned off if there is still no operation after a period of time. black) and lock the screen, but if the user does not perform any operation on the mobile phone while browsing the mobile webpage or information content, but the user does not want the mobile phone to automatically turn off the screen at this time, the user needs to click a button or Touch the screen before restoring the screen brightness set by the system. Especially when the user needs to stay on a certain desktop for a long time and does not need the automatic backlight of the system, such an experien...

Claims

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Application Information

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IPC IPC(8): G06F3/01G06K9/00
Inventor 曾元清
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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