Display Circuit Upper-Bit Comparison for Sticking Detection
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Solution Overview
Problem
Existing display systems lack a method to accurately check if data on controlling the light source is correctly transmitted and received, leading to potential issues like 'sticking' where the backlight remains in a stuck state, preventing users from viewing the intended image.
Innovation Solution
A circuit apparatus with components like a color information extraction section, luminance information extraction section, dithering section, image color correction section, and upper bit comparison section, which work together to extract, correct, and compare upper bits of luminance and image information to detect and address sticking events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data transmission control is implemented without verification, then the control process is simple and fast, but data transmission accuracy deteriorates leading to sticking events
Solution Approach 1:
The patent applies preliminary action by extracting and comparing upper bits of luminance information before the actual display rendering occurs. The upper bit extraction section prepares verification data in advance, and the comparison section checks for sticking events before they manifest in the final display, preventing erroneous data from reaching the display apparatus.
Solution Approach 2:
The patent extracts only the critical upper bits of luminance information for verification purposes, rather than processing and comparing complete data sets. This extraction approach focuses verification efforts on the most significant portions of the data that determine display output, improving detection efficiency while minimizing additional processing overhead.
2Reliability
If complete data verification is performed, then data accuracy is improved, but processing time increases
Solution Approach 1:
The patent extracts only the upper bits of luminance information for comparison and verification, rather than processing complete data sets. This selective extraction significantly reduces the amount of data that needs to be processed and compared, thereby minimizing additional processing time while still achieving effective sticking event detection.
Solution Approach 2:
The patent performs partial verification by comparing only the upper bits of luminance information, which contain the most critical display control data. This partial action approach provides sufficient verification to detect sticking events without the time cost of complete data verification, achieving an optimal balance between reliability and processing speed.
3Reliability
If no sticking detection mechanism is implemented, then the system operates smoothly without additional components, but sticking events go undetected causing display failures
Solution Approach 1:
The patent extracts and compares only the essential upper bits of luminance information for sticking event detection, rather than implementing comprehensive monitoring of all data parameters. This focused extraction approach provides effective sticking detection with minimal additional system complexity, as it requires only basic bit extraction and comparison functionality.
Solution Approach 2:
The patent enables the display system to self-diagnose sticking events by comparing its own internal luminance information data. The upper bit extraction and comparison sections allow the system to autonomously detect transmission errors without requiring external monitoring equipment or complex additional verification mechanisms.
Data Source
AI summary
A color information extraction section extracts color information from image information. A luminance information extraction section extracts luminance information for controlling the luminance of a backlight based on the color information. A dithering section adds bits for dithering to the lower bit side of the luminance information and outputs the luminance information after the addition to a display apparatus as output luminance information. An image color correction section corrects the color of the image information based on the color information and outputs the corrected image information to the display apparatus as output image information. An upper bit comparison section compares upper bits of the luminance information, upper bits of the output luminance information, and upper bits of the output image information with each other.