Adaptive Screen Brightness Control for Illumination Noise and Eye Fatigue
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Solution Overview
Problem
Conventional automatic brightness control functions in user devices do not adequately consider environmental illumination changes, noise-type illumination changes, and user vision adaptation characteristics, leading to decreased usability and increased eye fatigue.
Innovation Solution
A method and apparatus that determine optimal screen brightness based on predefined brightness profiles, accounting for illumination changes, noise-type changes, and user vision adaptation modes, using an illumination sensor and controller to maintain optimal brightness and reduce frequent brightness adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If screen brightness is frequently changed according to illumination changes, then screen brightness adapts to environment, but user screen concentration decreases and usability decreases
Solution Approach 1:
The patent implements periodic action by changing screen brightness only at specific intervals (e.g., every 5 minutes) rather than continuously responding to illumination changes. This periodic adjustment maintains adaptability to environmental lighting while preventing frequent disruptions to user concentration and usability.
2Adaptability or versatility
If screen brightness is changed when illumination sensor is covered by user's body part, then brightness responds to illumination changes, but brightness control errors increase
Solution Approach 1:
The patent applies feedback mechanisms to detect when the illumination sensor is covered by the user's body or objects. The system monitors illumination sensor coverage status and suppresses brightness changes during such periods, preventing control errors while maintaining accurate brightness adaptation when the sensor is unobstructed.
3Illumination intensity
If screen brightness is controlled according to illumination changes, then screen visibility improves in bright environments, but screen becomes too bright in dark environments causing eye fatigue
Solution Approach 1:
The patent implements dynamic brightness control that adapts to both illumination levels and user activity state. The system adjusts screen brightness based on real-time detection of user interaction patterns, reducing brightness in dark environments when the user is inactive to prevent eye fatigue, while maintaining higher brightness when the user is actively using the device.
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
Improves readability and user convenience by providing appropriate screen brightness in varying environments, reducing brightness control errors and eye fatigue through adaptive brightness control that considers user vision characteristics.
Implementation Method 1
an automatic brightness control function using an illumination sensor mounted on a user device
Data Source
AI summary
A method of controlling a screen brightness in a user device includes determining an illumination when a display unit is turned on, determining an optimal brightness according to the illumination and displaying according to the optimal brightness during an illumination change, determining an illumination when the current optimal brightness reaches a threshold, and determining an optimal brightness in the determined illumination and controlling a screen display according to the optimal brightness.