Display Drive Redundancy for Lamp Panel Fault Switching
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Solution Overview
Problem
The reliability of display drive systems is low due to failures in drive ICs or signal lines, leading to abnormal light emission by light-emitting units in the lamp panel.
Innovation Solution
A display drive system comprising multiple drive units, a control unit, and a power supply unit, where the drive units are connected to the lamp panel and can independently or jointly drive it to emit light. The control unit detects abnormal operating states of the drive units and switches to a functioning drive unit to maintain light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple drive units are used to drive the lamp panel, then the reliability of the display drive system is improved, but the device complexity increases
Solution Approach 1:
The display drive system is divided into multiple independent drive units (first drive unit and second drive unit), each capable of independently driving the lamp panel. This segmentation allows the system to maintain functionality even when one drive unit fails, as the other can take over. The lamp panel is also divided into multiple light-emitting units that can be independently controlled by different drive units.
Solution Approach 2:
The system dynamically changes the operating parameters by switching between different drive units based on their operational status. When a drive unit is detected to be abnormal, the system changes the driving parameter from the abnormal drive unit to the normal drive unit, maintaining system reliability through parameter adaptation rather than structural complexity.
2Reliability
If drive units are configured with backup capability, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The display drive system implements automatic fault detection and automatic switching between drive units. The control unit automatically detects when a drive unit becomes abnormal and automatically switches to the other drive unit without requiring manual intervention. This self-service capability maintains ease of operation while ensuring high reliability through automatic backup activation.
Solution Approach 2:
The system incorporates a feedback mechanism where the control unit continuously monitors the operational status of drive units and provides feedback signals. When an abnormality is detected, the feedback triggers automatic switching to the backup drive unit, maintaining system operation without user intervention and preserving ease of operation.
3Reliability
If drive units can switch between normal and abnormal states, then the reliability is improved, but the difficulty of detecting and measuring increases
Solution Approach 1:
The control unit is pre-configured with detection circuits and switching mechanisms ready before any fault occurs. The system performs preliminary setup of multiple drive units and their interconnections, so when an abnormality occurs, the detection and switching can happen immediately without requiring complex real-time analysis or manual diagnosis.
Data Source
AI summary
Provided is a display drive system, including: a plurality of drive units and a control unit. The plurality of drive units are connected to a lamp panel, and at least one of the plurality of drive units is configured to drive, during a display stage, the lamp panel to emit light. The control unit is connected to the plurality of drive units, and is configured to detect an operating state of the drive units driving the lamp panel to emit light. In response to detecting that a first drive unit is abnormal, the lamp panel is driven, by a second drive unit, to emit light, wherein the first drive unit is at least one of the drive units driving the lamp panel to emit light, and the second drive unit is at least one of the plurality of drive units other than the first drive unit.