Display Brightness Adjustment via Localized Glare Compensation
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Solution Overview
Problem
Existing display technologies cannot effectively adjust brightness to optimize viewing quality when a shaft of light causes glare, as they either darken or brighten the entire screen, failing to address localized light issues without compromising unaffected areas.
Innovation Solution
A display system with an array of individually adjustable pixels and a ring of light sensors around the bezel, which estimates the glare footprint and adjusts pixel brightness levels accordingly, allowing for localized brightness adjustments to normalize display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the whole screen brightness is adjusted to compensate for glare, then the viewing quality in the affected area is improved, but the unaffected areas deteriorate
Solution Approach 1:
The display screen is divided into multiple independently controllable pixel regions, allowing different brightness levels to be applied to different areas. The system identifies the glare-affected region and adjusts only those pixels, while leaving the unaffected pixels at their original brightness, thus resolving the contradiction between improving glare compensation and maintaining overall display quality.
Solution Approach 2:
The patent implements local brightness adjustment by modifying the brightness of specific pixels in the glare footprint rather than the entire screen. The controller receives light sensor data, determines the glare footprint coordinates, and applies brightness compensation only to pixels within that footprint, ensuring that local viewing quality is improved without affecting other areas.
2Measurement precision
If light sensors are densely placed around the bezel, then the glare detection precision is improved, but the manufacturing cost increases
Solution Approach 1:
The system uses a sufficient but not excessive number of light sensors around the bezel. Rather than placing sensors at every possible location, the patent implements a practical distribution that provides adequate glare detection precision while considering manufacturing constraints. This balanced approach achieves the necessary measurement precision without incurring excessive costs.
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 solution effectively reduces glare by individually adjusting pixel brightness, enhancing display quality across the entire screen while maintaining optimal viewing conditions without affecting unaffected areas.
Implementation Method 1
an array of light sensors fixed relative to the pixel array... providing light level data
Implementation Method 2
an array of pixels having individually adjustable brightness levels... adjusting the relative brightness levels of pixels
Data Source
AI summary
A display comprising an array of pixels having individually adjustable brightness levels; an array of light sensors fixed relative to the pixel array; and a brightness controller for estimating a glare footprint on the pixel array from light level data provided by the sensor array and for adjusting the relative brightness levels of pixels that fall in the estimated glare footprint.