Blue Noise Pattern for Display Reflection Mitigation
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Solution Overview
Problem
Information handling systems face challenges in effectively mitigating reflections and glare without compromising screen brightness or durability, as existing anti-reflective coatings can impact performance over time and are not durable enough for daily use.
Innovation Solution
The implementation of a blue noise pattern is applied to the displayed image, which interferes with reflections while preserving edges and image sharpness, using a combination of blue noise patterns for flat regions and edge-preserving properties to reduce glare effects, and adjusting noise levels based on ambient light, light source location, and display orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If anti-reflective coatings are applied to the display, then reflection and glare are reduced, but the coating durability and screen brightness are compromised over time
Solution Approach 1:
The patent replaces the physical anti-reflective coating with a software-based blue noise pattern overlay. Instead of applying a material coating to the display surface, the system generates and displays a computational blue noise pattern that optically interferes with reflections, substituting a mechanical/chemical solution with an electronic/software-based approach that maintains display durability and brightness.
Solution Approach 2:
The patent creates a virtual blue noise pattern that replicates the optical interference effect traditionally achieved through physical coatings. By generating a digital approximation of the desired optical property (reflection reduction) and overlaying it on the display, the system achieves the same functional outcome without the physical coating's durability issues.
2Object-affected harmful factors
If anti-reflective coatings are applied to the display, then reflection and glare are reduced, but screen brightness is compromised
Solution Approach 1:
The patent replaces the light-absorbing physical coating with a computational blue noise pattern that modulates light output dynamically. The blue noise pattern adjusts pixel intensities to create optical interference with reflections while maintaining or enhancing overall screen brightness through adaptive rendering, avoiding the permanent brightness reduction caused by physical coatings.
Solution Approach 2:
The patent implements a dynamic blue noise generation system that adapts to varying ambient light conditions, viewing angles, and display content. Unlike static anti-reflective coatings, the blue noise pattern can change in real-time to optimize both reflection reduction and brightness maintenance across different operating conditions.
3Object-affected harmful factors
If traditional anti-reflective methods are used, then reflection is reduced, but the solution lacks adaptability to varying environmental conditions
Solution Approach 1:
The patent incorporates ambient light sensors and displays orientation detection to create a feedback loop that dynamically adjusts the blue noise pattern characteristics. The system monitors environmental conditions (ambient light level, light source location, display orientation) and adapts the blue noise generation parameters accordingly, providing real-time optimization of reflection reduction across varying environmental conditions.
Solution Approach 2:
The patent transforms the static anti-reflective approach into a dynamic system where the blue noise pattern continuously adapts to environmental changes. The system adjusts noise intensity, frequency distribution, and spatial characteristics based on real-time sensor data, enabling versatile performance across different lighting conditions, viewing angles, and orientations.
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 method effectively mitigates reflections and glare without the drawbacks of traditional anti-reflective coatings, maintaining image quality and brightness while being adaptable to varying environmental conditions.
Implementation Method 1
The addition of noise to the displayed image can reduce the effect from glare and reflections off the display assembly 300 by interfering with the reflections
Data Source
AI summary
An information handling system includes a display for displaying an image and a processor. The processor is configured to receive an input image, determine if a pixel is in an edge region, generate an anti-reflective image by applying an edge preserving blue noise pattern to pixels within the edge region, and applying a mean persevering blue noise pattern to pixels outside of the edge region. The anti-reflective image is provided to the display. When displayed, the anti-reflective image reduces artifacts caused by reflection or glare on the display.