Projector Burn-In Elimination via Dynamic Time Control
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Solution Overview
Problem
Existing display devices face challenges in determining the optimal duration for burn-in elimination functions, leading to either unnecessary execution or insufficient burn-in elimination due to inadequate execution time.
Innovation Solution
A display device with a time measuring unit to track image display duration, a decision unit to determine the appropriate burn-in elimination time based on measured data, and a processing unit to execute the elimination function for the decided duration, optionally including user interaction for selecting the elimination time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the burn-in elimination function is executed for a long time, then the burn-in elimination effect is improved, but the loss of time and energy consumption increase
Solution Approach 1:
The patent applies dynamics by making the burn-in elimination execution time variable rather than fixed. The control unit dynamically adjusts the execution time based on the measured display time of the image, extending the execution time when the display time is long and reducing it when the display time is short. This dynamic adjustment resolves the contradiction by adapting the execution time to actual burn-in conditions, ensuring sufficient elimination effect while avoiding unnecessary time loss.
Solution Approach 2:
The patent changes the parameter of execution time based on the display time parameter. By establishing a relationship between display time and execution time, the system adjusts the execution time parameter according to actual usage conditions. This parameter change approach ensures that the burn-in elimination function executes for an appropriate duration, balancing elimination effectiveness with time efficiency.
2Loss of time
If the burn-in elimination function is executed for a short time, then the loss of time and energy consumption are reduced, but the burn-in elimination effect becomes insufficient
Solution Approach 1:
The system dynamically determines the execution time based on measured display time, ensuring the execution time is never shorter than necessary for effective burn-in elimination. The control unit compares the display time against threshold values and adjusts execution time accordingly, guaranteeing sufficient elimination effect while avoiding excessive execution time.
Solution Approach 2:
The patent implements feedback by measuring the actual display time and using this information to determine the appropriate execution time for burn-in elimination. The control unit receives feedback from the time measurement unit and adjusts the execution time based on this feedback, ensuring that the elimination function executes for just the right duration to be effective without wasting time.
3Device complexity
If a fixed execution time is used for burn-in elimination, then the device complexity is reduced, but the adaptability to different display conditions deteriorates
Solution Approach 1:
The system performs self-service by automatically measuring the display time and determining the appropriate execution time without requiring user input or complex external control. The control unit autonomously adjusts the execution time based on the measured display time, providing adaptability to different display conditions while maintaining relatively simple device architecture.
Solution Approach 2:
The patent creates a universal solution that adapts to various display conditions through a single control mechanism. The time measurement unit and control unit work together to provide a multi-functional system that can handle different display times and adjust execution time accordingly, making the device adaptable to diverse scenarios without requiring multiple specialized components.
Data Source
AI summary
A projector includes: a projection unit having a light modulation device and displaying a projection image via the light modulation device; a time measuring unit measuring a projection time for which the projection unit displays the projection image; a decision unit deciding an elimination execution time for which an elimination function to eliminate burn-in on the light modulation device is executed, based on the projection time; and a processing unit executing the elimination function.