Method, device and system for automatically adjusting backlight brightness
A technology of backlight brightness and automatic adjustment, applied in the direction of cathode ray tube indicators, static indicators, instruments, etc., can solve the problems of being easily affected by abnormal brightness changes, and the brightness changes of the display screen not being adapted to the human eye.
Active Publication Date: 2020-06-26
SUZHOU CHANGFENG AVIATION ELECTRONICS
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Problems solved by technology
[0005] In order to solve the defects that the above-mentioned brightness changes of the display screen are not adapted by human eyes and are easily affected by abnormal brightness changes, the present invention provides a method, device and system for automatically adjusting the brightness of the backlight. Automatically adjust the brightness of the backlight at any time, and can identify abnormal brightness changes, so as not to affect the changes in screen brightness
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[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0028] figure 1 It is a schematic flowchart of a method for automatically adjusting the brightness of a backlight provided by an embodiment of the present invention.
[0029] As shown in the figure, the method for automatically adjusting the brightness of the backlight in this embodiment includes:
[0030] S101. Acquiring at least one period of ambient light brightness value;
[0031] Specifically, the ambient light brightness value is obtained by obtaining the p...
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The invention provides a technology for automatically adjusting backlight brightness. The technology comprises the following steps: step 1, acquiring a peripheral ambient light brightness value of atleast one cycle, and the acquiring comprises acquiring at least one peripheral ambient light brightness values in one cycle; step 2, judging whether a jumping change exists in a plurality of continuous periods or not, if yes, executing step 2, and if not, executing step 3; step 3, determining an optimal backlight value of human eyes under the peripheral ambient light brightness value; and step 4,adjusting the backlight brightness according to the optimal backlight value. According to the technology for automatically adjusting the backlight brightness provided by the invention, whether the current ambient light is an abnormal brightness change caused by the sudden change in a period of time can be judged, and the different distinguishable brightness ranges under different ambient brightness of the human eyes are also considered to adapt to the screen brightness.
Description
technical field [0001] The invention relates to the technical field of adjusting the brightness of a screen backlight, in particular to a method, a device and a system for automatically adjusting the brightness of a backlight. Background technique [0002] In the rail transit industry, the backlight adjustment of the train instrument display screen is generally adjusted manually through the judgment of human eyes. Automatic backlight control is added to some display screens, which uses a light sensor to detect ambient light, and automatically adjusts the backlight of the display screen according to changes in ambient light. For example, in brighter lighting conditions, the backlight intensity can be increased to maintain readability, while in darker lighting conditions, the backlight intensity can be decreased to minimize power consumption. [0003] However, during the running of the train, when the train enters the tunnel or leaves the tunnel, the ambient light will have a...
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IPC IPC(8): G09G5/10
CPCG09G5/10
Inventor 沈建东陈柯缪岱李俊杨亮周魏
Owner SUZHOU CHANGFENG AVIATION ELECTRONICS