Subpixel Layout Compensation Circuitry for Display Color Fringing
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Solution Overview
Problem
Electronic displays suffer from color fringing artifacts due to subpixel layout discrepancies, where image data generated assuming uniform subpixel placement appears differently when displayed on displays with non-uniform subpixel arrangements, leading to unwanted color fringes at borders between pixels.
Innovation Solution
Subpixel layout compensation circuitry resamples image data to account for the actual spatial offsets of subpixels within pixels, using stored subpixel offset values to produce compensated image data that reduces or eliminates color fringing artifacts, and can be applied independently of the electronic display's subpixel layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If image data is generated assuming uniform subpixel placement, then image processing is simplified, but color fringing artifacts appear at pixel borders
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing subpixel offset values that represent the actual spatial positions of subpixels within pixels. These offset values are stored in a lookup table or memory structure, allowing the image processing system to compensate for subpixel layout variations without performing complex real-time calculations. The compensation is applied by adjusting pixel values based on the stored offset data before display, thereby eliminating color fringing artifacts while maintaining processing efficiency.
2Object-generated harmful factors
If subpixel offset compensation is applied, then color fringing is reduced, but image processing complexity increases
Solution Approach 1:
The patent uses copying by creating a simplified representation of the actual subpixel layout in the form of offset values that are stored in memory. Instead of performing complex geometric transformations or frequency analyses, the system copies the essential spatial relationship information into a data structure that can be easily accessed and applied during image processing. This copying approach maintains processing efficiency while achieving color fringing compensation.
3Object-generated harmful factors
If frequency analysis and gradient calculations are used to correct color fringing, then artifact reduction is achieved, but processing time and computational resources increase
Solution Approach 1:
The patent applies this principle by replacing expensive, computationally intensive frequency analysis and gradient calculation methods with a simple, lightweight offset-based compensation approach. The offset values are pre-computed once and stored, then reused repeatedly during normal operation without requiring additional computational resources. This disposable pre-computation approach eliminates the need for ongoing complex calculations, significantly reducing processing time and computational overhead while maintaining effective color fringing correction.
Data Source
AI summary
Systems and methods to compensate for color fringe visual artifacts due at least in part to subpixel locations on an electronic display are provided. An electronic device may include subpixel layout compensation circuitry (SLCC) and an electronic display. The SLCC may receive first image data and an indication of spatial positions of subpixels that make up pixels of an electronic display. The SLCC may generate second image data based at least in part on the first image data and the indication of the spatial positions of the subpixels. The second image data may reduce or eliminate a color fringe artifact that would otherwise occur without compensation.