Analog Interface Structures Reducing Display Artifacts via Interleaved Mapping
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Solution Overview
Problem
Digital displays often suffer from display artifacts due to errors in the transmission and recovery of analog display signals, exacerbated by misadjustments in image adjustments like brightness and contrast, leading to noticeable distortions.
Innovation Solution
The introduction of redundancy in digital display signals through intra-frame and inter-frame interleaving of different mapping processes, which visually diffuses these artifacts by introducing controlled noise, utilizing various mapping rules such as truncation, mapping down, mapping up, and rounding to reduce errors in analog signal conversion and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If analog interface parameters are adjusted for image quality (brightness and contrast), then display quality is improved, but errors in signal transmission and recovery are exacerbated, leading to display artifacts
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the mapping between analog and digital signal representations. Different mapping rules (truncation, mapping down, mapping up, rounding) are applied to different portions of the signal or different time periods, allowing the system to optimize for both image quality and artifact reduction under varying display conditions
Solution Approach 2:
The system dynamically switches between different mapping rules based on detected display artifacts or signal conditions. The analog-to-digital converter can change its mapping approach in real-time, making the system adaptive to varying signal quality and display requirements, thus resolving the contradiction between maintaining image quality and preventing artifacts
2Reliability
If multiple mapping rules are applied to reduce display artifacts, then artifact reduction is improved, but system complexity increases
Solution Approach 1:
The patent segments the signal processing into distinct mapping rule applications. Different mapping rules (truncation, mapping down, mapping up, rounding) are applied to different segments of the analog signal or different time periods, allowing complex artifact reduction through modular, manageable processing stages rather than a single complex algorithm
Solution Approach 2:
The system employs periodic switching between different mapping rules in a predetermined sequence or based on detected artifact patterns. This periodic application of multiple mapping rules allows the system to reduce various types of display artifacts while maintaining manageable complexity through structured, repeating processing patterns
Data Source
AI summary
Display structures and methods are provided that introduce redundancy and use this redundancy with different mapping rules on different interleaved display lines to visually diffuse display artifacts. The artifacts are typically produced by errors in the transmission and recovery of analog display signals that subsequently drive digital displays. This visual diffusion substantially reduces the display artifacts and, because these visual improvements require only one element (an ADC) in the display system to be configured at a higher resolution, the visual advantageous are realized with relatively low cost.