Predictive Temperature Adjustment for Display Panel Artifacts
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Solution Overview
Problem
Display panel sensing is often too slow to detect thermal variations in electronic displays, particularly when the refresh rate is set low to conserve power, leading to potential visual artifacts due to temperature changes that occur faster than can be identified and corrected.
Innovation Solution
A predictive temperature adjustment system that uses lookup tables for independent heat-producing components and analyzes image content changes to anticipate and mitigate temperature-related visual artifacts by adjusting the display refresh rate and image data compensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If display panel sensing is used to detect temperature changes, then temperature-related visual artifacts can be corrected, but the sensing speed is too slow to handle rapid temperature changes
Solution Approach 1:
The system performs preliminary actions by predicting future temperature changes based on current temperature data and historical patterns before actual temperature drift occurs. This allows the display to proactively adjust compensation parameters in advance, preventing visual artifacts rather than reacting after they occur. The prediction mechanism calculates anticipated temperature drift and pre-adjusts display parameters accordingly.
Solution Approach 2:
A temperature prediction algorithm acts as an intermediary between the slow physical temperature sensing process and the fast display rendering process. This intermediary component processes temperature data and generates predicted temperature values that the display system can use immediately, bridging the speed gap between actual temperature changes and detection capability.
2Use of energy by moving object
If refresh rate is reduced to conserve power, then energy consumption decreases, but temperature changes occur faster than sensing can detect
Solution Approach 1:
By predicting temperature changes in advance, the system maintains reliable temperature compensation even at lower refresh rates. The prediction mechanism anticipates temperature drift before it significantly impacts display quality, allowing the system to use fewer sensing cycles while still providing accurate compensation. This reduces power consumption while maintaining reliability.
Solution Approach 2:
The system implements a feedback mechanism where temperature sensing results and display rendering data are continuously analyzed to refine temperature prediction accuracy. This feedback loop allows the system to adapt to different operating conditions and maintain reliable compensation at varying refresh rates, optimizing the balance between power consumption and compensation reliability.
3Measurement precision
If display panel sensing frequency is increased to detect rapid temperature changes, then temperature compensation accuracy improves, but power consumption increases
Solution Approach 1:
The system applies partial sensing action by using temperature prediction to supplement actual temperature measurements. Instead of continuously sensing at high frequency, the system performs sensing at lower frequency and uses prediction algorithms to estimate temperature changes between measurements. This partial sensing approach maintains compensation accuracy while significantly reducing power consumption compared to continuous high-frequency sensing.
Solution Approach 2:
The prediction mechanism creates a virtual copy of temperature data that mimics what actual sensing would reveal if performed continuously. This temperature prediction copy allows the system to maintain high compensation accuracy without the power cost of actual continuous sensing, effectively replacing expensive frequent measurements with computationally lighter predictions.
Data Source
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AI summary
An electronic device includes an electronic display and processing circuitry. The electronic display includes pixels with behaviors that vary with temperature. As such, the processing circuitry generates image data to send to the electronic display (102) and adjust the image data (52) or vary an operation of the electronic display based at least in part on a predicted temperature effect on at least part of the active area of the electronic display (100). The processing circuitry determines the predicted temperature effect at least in part due to a first heat producing component or changes in content of the image data.