Ambient Light Sensing Through a Display With Reduced Screen Interference
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Solution Overview
Problem
Existing ambient light sensors in electronic devices face interference from the display screen's emitted light, which affects the accuracy of ambient light intensity detection, particularly when the screen displays information with multiple colors.
Innovation Solution
A method where a preset region of the display screen, facing the ambient light sensor, is controlled to display a pure color picture, such as a black picture, to minimize light emission and reduce interference, allowing for more accurate ambient light intensity detection and subsequent adjustment of the screen brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the display screen displays multiple colors, then the display information is rich and diverse, but the light interference to the ambient light sensor increases and detection accuracy deteriorates
Solution Approach 1:
The display screen is divided into a first display region and a second display region. The first display region displays colorful content information while the second display region displays a preset black background. This segmentation allows the colorful display to continue providing rich information while the black background region minimizes light interference to the ambient light sensor, thereby maintaining detection accuracy.
Solution Approach 2:
Different regions of the display screen are assigned different display qualities: the first display region uses full-color display for information richness, while the second display region uses a black background specifically to reduce light emission and interference toward the ambient light sensor. This local differentiation resolves the contradiction between display diversity and detection accuracy.
2Illumination intensity
If the display screen emits more light, then the display brightness is high and visible, but the interference to the ambient light sensor increases
Solution Approach 1:
The display screen is segmented into regions with different brightness characteristics. The second display region displays a black background that emits minimal light, specifically oriented toward the ambient light sensor to reduce interference, while the first display region maintains normal brightness for visibility.
Solution Approach 2:
The display employs non-uniform brightness distribution: the area facing the ambient light sensor (second display region) uses a black background with low light emission, while other areas (first display region) maintain normal brightness for user visibility. This local quality differentiation resolves the contradiction between overall display brightness and localized light interference.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach improves the accuracy of ambient light sensor detection by reducing the influence of the display screen's light on the sensor, enabling better adaptation of the screen brightness to the external environment.
Implementation Method 1
an ambient light sensor, disposed facing the display region of the display screen
Data Source
AI summary
The present disclosure provides a method for detecting ambient light intensity, a storage medium and an electronic device. The method for detecting ambient light intensity includes: controlling a preset region of a display screen of an electronic device to display a predetermined picture; obtaining an ambient light intensity value detected by the ambient light sensor; and controlling the display screen to respond according to the ambient light intensity value. The preset region is a region facing an ambient light sensor in the display screen. The predetermined picture is a pure color picture.