Display Brightness Adjustment via Ambient Light Sensing
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Solution Overview
Problem
Users experience visual fatigue due to prolonged exposure to monitors with fixed screen brightness under varying ambient light conditions, leading to discomfort and decreased productivity.
Innovation Solution
An electronic device with a display module, biosensor, ambient-light sensor, and display controller that adjusts screen brightness and color temperature based on detected ambient light conditions and user proximity, employing dynamic brightness and color-temperature adjustment modes to optimize viewing comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If screen brightness is kept at high setting for prolonged use, then visibility is maintained, but visual fatigue increases
Solution Approach 1:
The patent implements dynamic brightness adjustment by making the screen brightness可调 (adjustable) based on ambient light conditions detected by the ambient-light sensor. The display controller automatically adjusts brightness levels according to the detected ambient light, transforming the static brightness setting into a dynamic parameter that adapts to changing environmental conditions, thereby maintaining visibility while reducing visual fatigue.
Solution Approach 2:
The system employs feedback mechanisms where the ambient-light sensor continuously monitors ambient light conditions and feeds this information to the display controller. The controller then adjusts the screen brightness accordingly, creating a closed-loop control system that automatically responds to environmental changes, ensuring optimal brightness levels without user intervention.
2Ease of operation
If ambient light conditions vary, then viewing comfort decreases, but fixed brightness setting maintains simplicity
Solution Approach 1:
The display apparatus performs self-adjustment of brightness levels through the ambient-light sensor and display controller working autonomously. The system automatically detects ambient light conditions and adjusts screen brightness without requiring user intervention, making the device self-adaptive to environmental changes while maintaining operational simplicity.
Solution Approach 2:
The patent changes the brightness parameter dynamically based on ambient light conditions. By making brightness a variable parameter rather than a fixed setting, the system adapts to different lighting environments, improving viewing comfort while maintaining ease of operation through automatic adjustment.
3Object-affected harmful factors
If screen brightness is reduced in low ambient light, then visual comfort improves, but visibility may be compromised
Solution Approach 1:
The ambient-light sensor provides continuous feedback on ambient light levels to the display controller, which adjusts screen brightness in real-time. This feedback mechanism ensures that brightness is reduced appropriately in low ambient light conditions to improve visual comfort while maintaining sufficient visibility by precisely matching screen output to environmental lighting levels.
Solution Approach 2:
The system dynamically changes the brightness parameter based on detected ambient light conditions. By making brightness a variable that responds to environmental factors, the system optimizes the balance between visual comfort and visibility, reducing brightness when ambient light is low but maintaining it when ambient light is sufficient.
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
The solution dynamically adjusts screen settings to match ambient light conditions, reducing visual fatigue and improving user experience by ensuring optimal brightness and color temperature for different viewing scenarios, thereby enhancing comfort and productivity.
Implementation Method 1
an ambient-light sensor, configured to detect ambient-light brightness and an ambient-light color temperature of the display apparatus
Implementation Method 2
When the biosensor detects that a user is located in front of the display apparatus, the biosensor transmits an image-adjustment control signal to the display controller
Data Source
AI summary
A display apparatus is provided, which includes a display module, a biosensor, an ambient-light sensor, and a display controller. The ambient-light sensor is configured to detect ambient-light brightness and an ambient-light color temperature of the display apparatus. The display controller is configured to receive a video signal from a host, and displays the video signal on the display module. When the biosensor detects that a user is located in front of the display apparatus, the biosensor transmits an image-adjustment control signal to the display controller to control the display apparatus to enter an image-adjustment mode. When the display apparatus is in the image-adjustment mode, the display controller adjusts screen brightness and a screen color temperature of the image signal displayed on the display module according to the ambient-light brightness and the ambient-light color temperature.