Tiling Display Module Fault Detection via Dual Interface Circuits
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Solution Overview
Problem
Tiling display apparatuses installed outdoors face challenges in detecting error occurrences and identifying the cause of defects due to their complex structure, making it difficult to recognize errors visually and requiring extensive time for diagnosis.
Innovation Solution
A tiling display apparatus with a set board and display modules connected through interface circuits that automatically detect and diagnose defect positions and histories using a breakdown diagnosis sequence involving first and second interface circuits for signal transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If tiling display apparatuses are installed outdoors to satisfy large-sized display demands, then display size and versatility are improved, but error detection difficulty and diagnosis time increase
Solution Approach 1:
The patent implements a feedback mechanism where each display module sends defect information signals to a control device. When a defect occurs in any display module, the module automatically generates and transmits a defect information signal containing defect occurrence and position data. The control device receives these signals and notifies users of the specific defect location, enabling rapid identification without visual inspection of the large outdoor display.
Solution Approach 2:
The patent introduces a control device as an intermediary between the display modules and users. This control device receives defect information signals from display modules via interface circuits and processes the information to provide accurate defect location notifications. The intermediary handles the complex task of defect detection and communication, separating it from the display function itself.
2Area of stationary object
If multiple display modules are connected to form large screens, then display area and functionality are improved, but defect diagnosis time and system complexity increase
Solution Approach 1:
The patent divides the large display system into multiple independent display modules, each equipped with its own timing controller and interface circuit. Each module can independently detect and report defects through individual defect information signals. This segmentation allows the control device to identify specific defective modules without having to diagnose the entire large display system, significantly reducing defect diagnosis time.
Solution Approach 2:
Each display module provides real-time feedback about its operational status through defect information signals transmitted to the control device. This feedback mechanism enables immediate notification of defects without requiring manual inspection or system-wide diagnostics, reducing the time lost in defect diagnosis.
3Loss of time
If automatic defect detection is implemented using interface circuits, then diagnosis time is reduced, but device complexity increases
Solution Approach 1:
The patent uses interface circuits that serve multiple functions: they transmit control signals from the control device to display modules, transmit video signals, and simultaneously transmit defect information signals from modules to the control device. This multi-functionality reduces the need for separate dedicated defect detection circuits, minimizing the increase in device complexity while achieving automatic defect detection.
Solution Approach 2:
The patent combines defect detection and communication functions with the existing interface circuits used for control and video signal transmission. Rather than adding separate dedicated defect detection hardware, the defect information transmission is merged into the existing interface circuit infrastructure, reducing overall system complexity.
Data Source
AI summary
A tiling display apparatus includes a plurality of display modules connected to one another through a first interface circuit and a second interface circuit and a set board receiving a defect occurrence and position signal, generated in a broken-down module of the plurality of display modules, from the broken module through the first interface circuit in a first period, generating a defect recognition completion signal in a second period succeeding the first period, and transferring the defect recognition completion signal to the broken-down module through the second interface circuit in the second period.