Defective Pixel Detection in Multi-Cabinet LED Displays
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Solution Overview
Problem
Module type LED display devices face challenges in identifying and addressing defective pixels, as the position of defective pixels within the display module is not previously considered, leading to potential visual disturbances and quality issues.
Innovation Solution
An electronic device and control method that receive position information of defective pixels from multiple cabinets, identify the position of defective pixels on the entire screen, and provide information on defective areas, allowing for targeted replacement or rearrangement of display modules to minimize visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If position information of defective pixels is not tracked, then the system is simpler to operate, but the ability to identify and address defective areas is insufficient
Solution Approach 1:
The system implements feedback by having each cabinet report defective pixel position information to the controller, which then identifies defective areas and provides feedback for targeted replacement or rearrangement decisions
Solution Approach 2:
The display system is segmented into multiple independent cabinets, each with its own defective pixel detection capability, allowing localized tracking and management of defective pixels without requiring a monolithic system approach
2Reliability
If defective pixels are not rearranged or replaced, then the device complexity is reduced, but the display quality and user experience deteriorate
Solution Approach 1:
The system enables dynamic management of display modules by allowing rearrangement and replacement of cabinets based on defective pixel positions, transforming a static display system into one that can adapt to quality issues
Solution Approach 2:
The system applies local quality management by identifying specific defective areas and enabling targeted replacement or rearrangement of only the affected cabinets or modules, rather than requiring complete system replacement
3Reliability
If the entire cabinet is replaced due to defective pixels, then the display quality is improved, but the resource waste and cost increase
Solution Approach 1:
The system extracts and identifies only the specific defective pixels and their locations within cabinets, enabling selective management of problematic areas rather than treating the entire cabinet as defective
Solution Approach 2:
The system enables recovery of functional cabinets by identifying and isolating defective pixels, allowing non-defective modules to be retained and reused, thus reducing resource waste from complete cabinet replacement
Data Source
AI summary
An electronic device and a control method therefor are provided. The electronic device comprises: a communication unit; and a processor configured to receive, from at least one cabinet of a plurality of cabinets, position information on a defective pixel detected in each cabinet through the communication unit, identify a position, on an entire screen consisting of the plurality of cabinets, where the defective pixel is present on the basis of the position information of the defective pixel, identify a defective area on the entire screen on the basis of the identified position, and provide information on the identified defective area. Here, each of the plurality of cabinets includes a plurality of display modules, wherein each of the plurality of display modules includes a plurality of pixels each consisting of a plurality of LEDs.