Display Screen Fault Detection Using Ambient Light Compensation
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Solution Overview
Problem
Current methods for detecting display screen faults using color sensors are prone to misjudgment due to the influence of ambient light, especially in high-light environments, leading to inaccurate fault determination.
Innovation Solution
A method and apparatus that detect the components of primary colors when displaying a black and a non-black monochromatic image, calculating the difference between the two to determine screen faults, while accounting for ambient light effects by subtracting its intensity from the measurement results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a color sensor is used to detect the color of displayed images to determine display faults, then fault detection capability is provided, but measurement precision deteriorates due to ambient light interference
Solution Approach 1:
The patent applies preliminary action by first detecting the ambient light intensity before the actual fault detection. A light sensor measures the ambient light intensity in advance, and this pre-obtained data is then used to compensate for ambient light interference during the color detection process, thereby improving measurement precision while maintaining fault detection capability
Solution Approach 2:
The patent introduces an intermediary approach by using ambient light intensity data as a mediator factor. The detected ambient light intensity is used to calculate compensation values that adjust the color sensor readings, effectively separating the ambient light effect from the actual display color to improve measurement accuracy
2Productivity
If color sensor detection is performed in strong ambient light conditions, then continuous monitoring is enabled, but measurement precision worsens leading to misjudgment
Solution Approach 1:
The patent implements feedback by continuously monitoring ambient light intensity and using this information to dynamically adjust the color detection results. The system feeds back the ambient light intensity data to compensate for its interfering effect, allowing continuous monitoring while maintaining measurement precision through real-time compensation
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 provides more accurate fault detection by minimizing the impact of ambient light, allowing for timely and reliable identification of display screen issues, and includes an alert system for fault conditions.
Implementation Method 1
a color sensor is currently applied to determine display faults in the display screen. In a specific detecting method, the display screen is made to display a predefined monochromatic image... The color sensor detects the color of images displayed by the display screen, to obtain components of red, green, and blue (RGB) primary colors
Data Source
AI summary
A method and apparatus for detecting a display screen are provided. The apparatus comprises: a detection module for detecting components of a primary color in the light at a display side when a first and second display signal are input to the display screen, wherein the first and second display signal are used for displaying a monochromatic image in black and a monochromatic image in a color other than black; and a data processing unit for calculating a difference between components of the primary color which are detected when the first and second display signal are input, and determining whether there is a fault in the display screen according to the difference. The effect of ambient light on detection results can be reduced, and the detection results are more close to the actual case.