Rising Edge Detection in Display Panels via Linear Voltage Increment Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display panels face errors and noisy points due to incorrect detection of rising/falling edges in clock signals, caused by signal reflection and waveform distortion during differential signal transmission.
Innovation Solution
A method and apparatus that acquire real-time voltage increments and determine linear variation to accurately identify rising/falling edges, enabling precise data capturing and avoiding errors by using a processor and memory to execute an identification program that checks for linear voltage changes at specific threshold values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If differential signal transmission is used to improve display definition, then display quality is improved, but signal reflection causes waveform distortion leading to incorrect rising/falling edge detection
Solution Approach 1:
The patent applies preliminary action by detecting voltage increment trends before the voltage reaches the critical value. By monitoring whether the voltage increment is increasing or decreasing in advance, the system can predict the true rising/falling edge timing before waveform distortion occurs, allowing data sampling to be precisely timed at the actual edge moment rather than being misled by reflected signal peaks.
2Productivity
If data sampling is performed at detected rising/falling edges, then data capture efficiency is improved, but incorrect edge detection due to signal reflection causes sampling errors and noisy points
Solution Approach 1:
The patent implements feedback by continuously monitoring the voltage increment trend and using this information to verify whether a detected rising/falling edge is genuine. The system feeds back the voltage increment change pattern to the sampling decision logic, allowing it to distinguish between true edges and false edges caused by signal reflection, thereby ensuring high reliability of data sampling while maintaining efficiency.
Data Source
AI summary
Disclosed are a method and an apparatus for identifying a rising/falling edge and a display panel. The method for identifying a rising/falling edge includes the following steps: acquiring a real-time voltage increment of the current signal; determining whether or not a variation mode of the voltage increment is linear variation; and determining that a rising/falling edge of the current signal reaches at current moment.