Adaptive Display Scanning to Minimize Visual Artifacts
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Solution Overview
Problem
Sensing of display panel characteristics can result in visual artifacts due to data signals causing pixel emission, which are more apparent in low ambient light and dim user interface conditions, particularly affecting green and blue pixels, and can be detrimental to user experience.
Innovation Solution
Adaptive scanning schemes are implemented based on ambient light levels, UI luminance, and eye detection, where pixels more likely to display artifacts are sensed differently, with varying scanning frequencies and omission of certain colors or pixels in low visibility conditions, and scanning is adjusted spatially across the screen.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sensing data signals are sent to pixels at higher power levels, then sensing precision is improved, but visual artifacts become more apparent
Solution Approach 1:
The patent applies dynamics by making the sensing scheme adaptive and variable rather than static. The system dynamically adjusts sensing parameters including power levels, scan frequencies, and pixel selection based on real-time detection of ambient light conditions, display content luminance, and eye tracking data. This allows the system to optimize sensing precision when conditions permit while minimizing visual artifacts when conditions require it.
Solution Approach 2:
The patent implements parameter changes by modifying multiple sensing parameters including power levels, scan frequencies, and pixel selection based on detected conditions. The system changes these parameters adaptively - for example, reducing power levels or skipping certain pixels when artifacts are likely to be visible, while maintaining higher sensing precision when conditions are favorable.
2Measurement precision
If aggressive sensing is applied to all pixels, then sensing accuracy is improved, but artifact visibility increases in low light conditions
Solution Approach 1:
The patent applies local quality by treating different pixels differently based on their individual characteristics and likelihood to produce visible artifacts. Rather than applying uniform sensing to all pixels, the system selectively adjusts sensing parameters for specific pixels or pixel groups - for example, reducing sensing intensity or skipping pixels that are more likely to display visible artifacts while maintaining normal sensing for pixels that are less problematic.
Solution Approach 2:
The patent implements segmentation by dividing the pixel array into different sensing groups or categories based on their artifact visibility characteristics. The system segments pixels into those that can be sensed aggressively and those that require gentler or skipped sensing, allowing differentiated treatment that optimizes both sensing accuracy and artifact minimization.
3Measurement precision
If sensing scan is performed continuously, then sensing data quality is improved, but user experience deteriorates due to visible artifacts
Solution Approach 1:
The patent applies periodic action by implementing intermittent or variable-frequency sensing scans rather than continuous scanning. The system uses eye tracking detection to determine when the user is looking at the display and adjusts or pauses sensing scans accordingly - performing sensing when the user is not viewing the display and reducing or stopping sensing when the user is looking, thereby eliminating visible artifacts during user interaction.
Solution Approach 2:
The patent implements feedback by using eye tracking data and ambient light sensors to continuously monitor viewing conditions and adjust sensing operations in real-time. The system receives feedback about user presence and gaze direction, then adapts its sensing scan frequency and intensity accordingly, optimizing both data quality and user experience based on actual viewing conditions.
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
Reduces the visibility of scanning artifacts, enhancing user experience by minimizing detectable emissions during sensing, especially in low light conditions, and optimizing scanning parameters to avoid visible artifacts when users are not looking at the screen.
Implementation Method 1
data signals used in sensing of a self-emissive panel sometimes causes emission of pixels being sensed
Data Source
AI summary
Electronic devices, storage medium containing instructions, and methods pertain to scanning a display during a sensing phase for the display. One or more parameters pertaining to operation or conditions around the display are obtained. Using the obtained one or more parameters, scanning mode parameters used for sensing are set based at least in part on the obtained one or more parameters. Using the scanning mode parameters, the display is scanned during a sensing phase of the display while reducing the likelihood of visible artifacts.