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Method and device for controlling screen brightness and display equipment

A screen brightness and control method technology, applied to static indicators, cathode ray tube indicators, instruments, etc., can solve the problems that cannot effectively meet the comfort of human eyes watching the screen, and achieve the effect of improving comfort

Active Publication Date: 2014-02-19
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a screen brightness control method to solve the problem that the existing technology cannot effectively meet the comfort of human eyes watching the screen

Method used

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  • Method and device for controlling screen brightness and display equipment
  • Method and device for controlling screen brightness and display equipment
  • Method and device for controlling screen brightness and display equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] figure 1 The implementation flow of the screen brightness control method provided by Embodiment 1 of the present invention is shown, and the process of the method is described in detail as follows:

[0033] In step S101, the brightness value of the external environment is acquired.

[0034] In this embodiment, the brightness value of the external ambient light is sensed by a brightness sensor in the display device. The brightness sensor can be any one of a photoresistor, a photodiode, a phototransistor, and the like.

[0035] Preferably, in order to prevent the different light intensities at the front and back of the display device from affecting the display brightness of the screen, this embodiment places the brightness sensor on the same side of the screen of the display device, so that the brightness displayed on the screen can better meet the needs of human eyes. Viewing comfort.

[0036] In step S102, the acquired ambient light brightness value is converted into...

Embodiment 2

[0056] image 3 It shows the implementation flow of the screen brightness control method provided by the second embodiment of the present invention. This embodiment adds step S305 on the basis of the first embodiment:

[0057] In step S305, the duty cycle of the screen pixel is obtained according to the CIE1931 brightness value, the backlight current value or the brightness value of the external environment.

[0058] In this embodiment, according to the obtained backlight current value and CIE1931 brightness value, the formula Obtain the duty ratio of the screen pixels (the display is formed by the arrangement of many independent pixels, and the brightness of the screen can be controlled by adjusting the duty ratio of the pixels). in Is the duty cycle, I is the backlight current value, Y is the CIE1931 brightness value, Y w It is the CIE1931 value at the maximum ambient light brightness.

[0059] Furthermore, in this embodiment, the duty cycle of the pixel can be obtaine...

Embodiment 3

[0068] Figure 4 The composition structure of the screen brightness control device provided by the third embodiment of the present invention is shown, and for the convenience of description, only the parts related to the embodiment of the present invention are shown.

[0069] The screen brightness control device may be a hardware unit or a unit combining software and hardware running in each display device (for example, a mobile phone, a tablet computer, a display, etc.).

[0070] The screen brightness control device 4 includes a brightness sensor 41 , a first conversion unit 42 , a second conversion unit 43 and a control unit 44 . Among them, the specific functions of each unit are as follows:

[0071] Brightness sensor 41, used to obtain the brightness value of the external environment;

[0072] The first converting unit 42 is configured to convert the obtained ambient light brightness value into a CIELuv brightness value;

[0073] The second conversion unit 43 is configu...

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Abstract

The invention is applicable to the field of display control and provides a method and device for controlling screen brightness and display equipment. The method comprises the following steps: obtaining the light brightness value of an external environment; converting the obtained light brightness value of the external environment into a CIELuv brightness value; obtaining a CIE1931 brightness value according to the conversion relationship of the CIELuv brightness value and preset CIELuv brightness with CIE1931 brightness; and obtaining the backlight electric current value of a screen according to the CIE1931 brightness value, and controlling the screen brightness according to the backlight electric current value. By using the method and the device for controlling the screen brightness and the display equipment, the comfortableness that human eyes observe the screen is further improved while the adaption of the screen brightness and the external environment is achieved.

Description

technical field [0001] The invention belongs to the field of display control, and in particular relates to a screen brightness control method, device and display equipment. Background technique [0002] In order to prevent the display screen from being dim under strong light such as the sun, and the brightness of the display screen is too bright and too dazzling in a dim environment, the existing technology adds a brightness sensor to the display device, and senses the brightness of the external environment through the brightness sensor. Thereby changing the brightness of the display screen. [0003] In the prior art, the specific implementation scheme for the brightness of the display screen to change with the brightness of the external environment is: the brightness sensor senses the brightness value of the external environment, and when the sensed ambient brightness value is greater than the previous ambient brightness value, the display screen brightness is increased. B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G5/10
Inventor 杨泓
Owner HUAWEI DEVICE CO LTD