Display Synchronization Signal Detection Using Segmented Frequency Tables
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Solution Overview
Problem
Current methods for detecting synchronization signals in displays require large and complex frequency tables, leading to complicated and slow detection processes due to the simultaneous comparison of vertical and horizontal synchronization frequencies.
Innovation Solution
A method and device that first compare the actual vertical synchronization frequency with prestored standard frequencies to select a candidate frequency within a specific error range, then compare the actual horizontal synchronization frequency with corresponding standard frequencies in a sub-table to determine the correct synchronization signal, allowing for quick and accurate detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the standard synchronization signal table stores both standard V-sync frequencies and standard H-sync frequencies in the same table, then the table structure becomes integrated, but the capacitance requirement increases and the arrangement becomes irregular and complicated, leading to slow and complex detection procedures
Solution Approach 1:
The patent divides the standard synchronization signal table into multiple sub-tables, where each sub-table stores standard H-sync frequencies corresponding to a specific standard V-sync frequency. This segmentation reduces the complexity of the overall table structure and enables faster detection by narrowing down the search scope.
Solution Approach 2:
The patent performs preliminary comparison of V-sync frequencies first to identify candidate frequencies within an error range, then uses these candidates to guide the subsequent H-sync frequency comparison. This preliminary action reduces the detection process to a targeted search within sub-tables, significantly improving detection speed.
2Device complexity
If the standard synchronization signal table stores both standard V-sync frequencies and standard H-sync frequencies in the same table, then the table structure becomes integrated, but the arrangement of frequencies becomes irregular and complicated, making the detection procedure complex
Solution Approach 1:
The patent segments the frequency table into V-sync frequency sub-tables, where each sub-table contains only the H-sync frequencies corresponding to a specific V-sync frequency. This segmentation simplifies the detection procedure by organizing data in a structured, hierarchical manner that mirrors the detection process.
Solution Approach 2:
The patent performs preliminary filtering of V-sync frequencies to identify candidates within an error range before proceeding to H-sync frequency comparison. This preliminary action simplifies the detection procedure by reducing the search space and providing a clear decision path.
3Device complexity
If the standard synchronization signal table stores both standard V-sync frequencies and standard H-sync frequencies in the same table, then the table structure becomes integrated, but the detection procedure becomes complicated and low in speed
Solution Approach 1:
The patent divides the standard synchronization signal table into multiple sub-tables, where each sub-table stores standard H-sync frequencies corresponding to a specific standard V-sync frequency. This segmentation reduces the complexity of the overall table structure and enables faster detection by narrowing down the search scope.
Solution Approach 2:
The patent performs preliminary comparison of V-sync frequencies first to identify candidate frequencies within an error range, then uses these candidates to guide the subsequent H-sync frequency comparison. This preliminary action reduces the detection process to a targeted search within sub-tables, significantly improving detection speed.
Data Source
AI summary
A method for detecting a synchronization signal of a display comprises: obtaining an actual V-sync frequency of the display, comparing the actual V-sync frequency with standard V-sync frequencies prestored in a standard synchronization signal table, and selecting a standard V-sync frequency as a candidate V-sync frequency so that difference between the candidate V-sync frequency and the actual V-sync frequency is within a first error range; obtaining an actual H-sync frequency of the display, comparing the actual H-sync frequency with standard H-sync frequencies in the standard horizontal synchronization signal sub-table which corresponds to the selected candidate V-sync frequency, and selecting a standard H-sync frequency as a correct H-sync frequency so that difference between the correct H-sync frequency and the actual H-sync frequency is within a second error range, thereby a resolution of the display is obtained.