Display Device Failure Detection via Power Consumption Profiling
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Solution Overview
Problem
Current information handling systems lack a method to determine display device failures, such as damage, prior to return for repair, especially during shipment, which hinders timely identification and resolution.
Innovation Solution
A power consumption profiling method that calibrates initial and updated system power profiles by identifying baseline and updated current values of the backlight and timing controller, determining threshold deviations, and updating indicators to detect potential damage to the display device and timing controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If power consumption profiling is implemented to detect display device failures, then detection capability is improved, but system complexity increases
Solution Approach 1:
The power consumption profiling system is segmented into distinct measurement components: backlight power rail monitoring and timing controller power rail monitoring. Each component independently measures power consumption of specific display subsystems, enabling targeted failure detection without requiring a monolithic complex system.
Solution Approach 2:
Baseline power consumption values are established during an initial calibration phase before the device is shipped or used. These baseline values are stored and later used for comparison during operational monitoring, enabling failure detection without requiring complex real-time analysis algorithms.
2Measurement precision
If baseline power consumption values are stored and compared over time, then failure detection accuracy is improved, but data storage requirements increase
Solution Approach 1:
Only the essential baseline power consumption values for the backlight and timing controller are extracted and stored, rather than storing complete power profiles or raw measurement data. This selective extraction maintains detection accuracy while minimizing storage requirements.
3Loss of time
If power consumption monitoring is performed during device operation, then timely failure detection is improved, but energy consumption increases
Solution Approach 1:
Power consumption monitoring is performed periodically at scheduled intervals during device operation rather than continuously. This periodic sampling approach enables timely failure detection while significantly reducing the energy overhead compared to continuous monitoring.
Data Source
AI summary
Detecting failures using power consumption profiling, including calibrating, at a first time, a system power profile of an information handling system (IHS), including identifying an initial baseline current value of a backlight power of a display device of the IHS; identifying an initial baseline current value of a timing controller of the IHS; calculating, at a second time, an updated system power profile, including: identifying an updated current value of the backlight power of the display device of the IHS; identifying an updated current value of the timing controller of the IHS; determining whether the updated current value of the backlight power of the display device is within a threshold value of the initial baseline current value of the backlight power of the display device.