Redundant Backlight Control for Vehicle Display Failure Protection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vehicle display systems lack effective solutions to ensure driving safety when the backlight fails, as they only detect abnormalities in the vehicle host signal and do not address backlight failures.
Innovation Solution
A display system with a first and second light source group, where the second group is activated when the first group fails, ensuring continuous display functionality by controlling the second group to maintain image display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single light source group is used in the display system, then the device complexity and manufacturing cost are reduced, but the reliability deteriorates when the light source fails
Solution Approach 1:
The light source is divided into multiple independent light source groups (first light source group and second light source group) that can operate independently. Each group corresponds to specific display regions, allowing one group to compensate for failures in another group, thereby improving system reliability without requiring a complete backup of the entire light source system.
Solution Approach 2:
The patent incorporates a redundant second light source group in advance as a backup mechanism. When the first light source group fails, the control unit automatically activates the second light source group to compensate, cushioning against the impact of failure and ensuring continuous display functionality without interruption.
2Reliability
If redundant light source groups are added to ensure reliability, then the reliability improves, but the manufacturing cost increases
Solution Approach 1:
Instead of providing a complete redundant backup of the entire light source system, the patent segments the light source into multiple groups and adds redundancy only to the critical first light source group. The second light source group is configured to compensate for failures in the first group, achieving reliability improvement with minimal additional manufacturing cost.
Solution Approach 2:
The patent creates a simplified copy or replica of the first light source group in the form of the second light source group. This copy is specifically designed to compensate for failures in the original first light source group, providing backup functionality without requiring an exact duplicate of the entire light source system, thus controlling manufacturing costs.
3Reliability
If the display system only detects vehicle host signal abnormalities, then the detection complexity is reduced, but the safety deteriorates when backlight fails
Solution Approach 1:
The patent incorporates a detection mechanism that monitors the status of the light source groups and provides feedback to the control unit. When the first light source group is detected to be abnormal, the control unit receives feedback and automatically switches to the second light source group, ensuring continuous safe operation without requiring complex external monitoring systems.
Data Source
AI summary
A display control module and a display system are provided, including a display panel; a first light source group comprising a plurality of first light sources configured to enable the display panel to display images; a second light source group comprising a plurality of second light sources, the first light source group and the second light source group arranged alternately; a sensing unit configured to detect whether the first light source group is abnormal; and a control unit configured to control the second light source group to work when the first light source group is detected to be abnormal by the sensing unit.