Display Luminance Adjustment for Outdoor Readability
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Solution Overview
Problem
Display devices struggle to maintain image readability in bright outdoor environments due to limited brightness, which bleaches image details and restricts device usage.
Innovation Solution
An electronic device equipped with a light sensor, algorithm engine, and adjustment engine that detects ambient brightness and adjusts the luminance component of each pixel to enhance image brightness and contrast, improving readability in bright conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the display brightness is increased to improve outdoor readability, then the image visibility improves, but the energy consumption increases and the display may not achieve sufficient brightness under strong sunlight
Solution Approach 1:
The patent changes the luminance parameters of image pixels dynamically based on detected ambient brightness levels. The adjustment engine modifies the luminance component of each pixel according to pre-stored adjustment functions that correspond to different ambient brightness conditions, allowing the display to adapt its brightness characteristics without simply increasing overall display power consumption.
2Illumination intensity
If the display brightness is increased to maintain image visibility in bright environments, then the image readability improves, but the image contrast deteriorates due to brightness bleaching
Solution Approach 1:
The patent applies different luminance adjustment strategies to different pixels based on their individual luminance characteristics. The adjustment engine selectively modifies the luminance component of each pixel according to its original luminance value and the ambient brightness level, preserving local contrast relationships while improving overall visibility. This localized adjustment prevents the uniform brightness increase that causes contrast loss.
3Loss of information
If image processing is applied to enhance readability, then the image clarity improves, but the processing time increases
Solution Approach 1:
The patent pre-stores multiple adjustment functions in the adjustment engine that correspond to different ambient brightness levels. When the light sensor detects the ambient brightness, the system directly selects and applies the appropriate pre-computed adjustment function without performing complex real-time calculations. This preliminary preparation of adjustment functions significantly reduces processing time while maintaining image enhancement effectiveness.
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 effectively enhances image readability by dynamically adjusting pixel luminance, improving contrast and brightness, thereby improving image clarity in outdoor environments.
Implementation Method 1
A light sensor of the electronic device detects an ambient brightness
Data Source
AI summary
An electronic device is provided, which includes a light sensor, an algorithm engine, an adjustment engine, and a display. The light sensor detects an ambient brightness around the electronic device. The algorithm engine is coupled to the light sensor. The algorithm engine determines at least one adjustment function according to the ambient brightness. The adjustment engine is coupled to the algorithm engine. The adjustment engine adjusts the luminance component of each pixel of an image according to the at least one adjustment function to enhance the brightness and/or the contrast of the image. The display is coupled to the adjustment engine for displaying the adjusted image.