Screen Saver Controller Temperature Adaptive Luminance
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Solution Overview
Problem
Display devices operating in screen saver mode without considering the temperature of the display panel can lead to afterimages and reduced lifespan due to unnecessary power consumption and overcurrent in pixels.
Innovation Solution
A screen saver controller that calculates and compares temperature data of the display panel, generating operation data to adjust luminance based on temperature changes, optimizing the screen saver mode for temperature variations to extend the lifespan of the display panel and improve afterimage visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If screen saver mode operates without considering display panel temperature, then power consumption is reduced and luminance is decreased, but afterimages appear and pixel lifespan is reduced due to overcurrent
Solution Approach 1:
The patent applies dynamics by making the screen saver operation adaptive rather than static. The controller dynamically adjusts screen saver parameters based on real-time temperature monitoring. When temperature exceeds a threshold, the controller modifies luminance levels or activates cooling measures, creating a dynamic response to thermal conditions that prevents pixel damage while managing power consumption
Solution Approach 2:
The patent implements feedback through temperature sensing and control loops. A temperature sensor continuously monitors display panel temperature and feeds this information back to the controller. The controller processes this feedback and adjusts screen saver operation accordingly, creating a closed-loop system that prevents afterimages and extends pixel lifespan by responding to actual thermal conditions
2Loss of energy
If screen saver mode decreases luminance without temperature consideration, then energy loss is reduced, but afterimage visibleness increases and display reliability deteriorates
Solution Approach 1:
The patent applies parameter changes by adjusting luminance levels based on temperature parameters. Rather than using a fixed luminance reduction, the controller modifies luminance parameters dynamically according to temperature readings. This ensures that luminance decreases sufficiently to save energy while maintaining levels that prevent afterimage formation, optimizing the balance between energy efficiency and display quality
3Device complexity
If screen saver mode operates based on fixed luminance reduction, then device complexity is kept simple, but it cannot adapt to temperature variations causing afterimages and reduced lifespan
Solution Approach 1:
The patent implements self-service through automatic temperature-based control. The system monitors its own thermal state and autonomously adjusts screen saver parameters without requiring external intervention or complex user settings. This self-regulating mechanism maintains reliability by preventing afterimages while keeping the control system relatively simple, as the automation handles the complexity internally
Data Source
AI summary
A screen saver controller includes a temperature calculator, a temperature comparator, an operator, and a screen saver data generator. The temperature calculator calculates temperature data of a display panel based on input image data. The temperature comparator receives the temperature data and a target temperature and compares a temperature of the display panel with the target temperature to generate temperature change data. The operator receives the temperature data and the temperature change data and generates operation data based on the temperature data and the temperature change data. The screen saver data generator receives the operation data and generates screen saver data based on the operation data. The screen saver controller adjusts a luminance of the display panel based on the screen saver data when operating in a first mode.