Display Controller Calibration Timing via Memory Noise Detection
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Solution Overview
Problem
Display apparatuses face challenges in maintaining driving stability and reliability due to luminance non-uniformity issues, where compensation data can be damaged or inaccurate during update operations.
Innovation Solution
A display apparatus with a controller that performs calibration operations during idle memory periods or sensing periods, adjusting parameter values for communication with memory, and shifting calibration times based on noise occurrence in memory power to minimize errors and ensure stable power application during updates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If calibration operation is performed during memory idle period, then driving stability and reliability are improved, but error occurrence rate increases when noise occurs in memory power
Solution Approach 1:
The patent implements dynamic adjustment of calibration timing based on real-time noise detection in memory power. The controller monitors noise levels and adaptively shifts calibration operations to appropriate time points, transitioning from static scheduled calibration to dynamic noise-aware calibration timing.
Solution Approach 2:
The system incorporates feedback mechanisms where the controller detects noise in memory power and uses this information to adjust subsequent calibration operations. The noise detection result feeds back into the timing control logic, enabling closed-loop optimization of calibration accuracy.
2Measurement precision
If calibration operation is performed during memory idle period, then communication environment parameter accuracy is improved, but luminance non-uniformity issues persist due to compensation data damage
Solution Approach 1:
The patent performs preliminary noise detection before executing calibration operations. By detecting noise in advance and selecting safe time points for calibration, the system prevents compensation data damage before it occurs, rather than attempting correction afterward.
Solution Approach 2:
The system converts the potentially harmful noise phenomenon into a useful indicator for timing optimization. By monitoring noise patterns, the system identifies safe calibration windows, turning noise detection into a benefit for ensuring data integrity.
3Measurement precision
If calibration time is shifted to avoid noise, then calibration accuracy is improved, but memory update operation timing becomes complex
Solution Approach 1:
The controller integrates multiple functions into a single timing management mechanism: it handles both noise detection and calibration scheduling, and also coordinates with memory update operations. This multi-functional approach manages complexity by consolidating control logic rather than creating separate independent systems.
Data Source
AI summary
A display apparatus can include a display panel configured to display an image, a driver configured to drive the display panel, a controller configured to control driver, and a memory controlled by the controller. The controller performs a calibration operation during an idle period of the memory.