Rearview Mirror Display Auto-Switching on Display Failure
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Solution Overview
Problem
Existing rearview mirror systems in vehicles require manual mode switching by drivers, which diverts attention from safety-relevant areas during the switching process, and fail to automatically adapt to conditions affecting display functionality.
Innovation Solution
An intelligent rearview mirror system that automatically switches between display and mirror modes based on vehicle conditions, gear position, and display failures, using sensors and processors to ensure optimal driver awareness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual mode switching is implemented, then the driver can control the rearview mirror display, but the driver's attention is diverted from safety-relevant areas during switching
Solution Approach 1:
The system automatically detects display failures and gear positions, then autonomously switches between display mode and mirror mode without requiring driver intervention. This self-service mechanism eliminates the distraction caused by manual switching while maintaining reliable driver awareness of safety-relevant areas.
Solution Approach 2:
The system continuously monitors display functionality and vehicle gear position, using this feedback to automatically determine when to switch between display and mirror modes. This feedback-driven approach ensures mode switching occurs only when appropriate, maintaining driver awareness while providing operational control.
2Reliability
If automatic switching is implemented, then driver awareness is maintained, but the system complexity increases
Solution Approach 1:
The existing display controller is enhanced to perform multiple functions: it continues to control display operations while also monitoring display failures and detecting gear positions. By making the controller universal, the system achieves automatic mode switching without adding separate dedicated hardware components, thus limiting the increase in system complexity.
Solution Approach 2:
The system combines display control functions with automatic mode switching logic within a single integrated controller. By merging these functions, the patent reduces the number of separate components needed while maintaining the reliability benefits of automatic switching based on display status and gear position detection.
3Illumination intensity
If display mode is used, then visibility is improved, but the system fails to adapt to display failures and environmental conditions
Solution Approach 1:
The system dynamically adjusts between display mode and mirror mode based on real-time conditions such as display functionality and environmental factors like direct sunlight. This dynamic adaptation ensures optimal visibility by using display mode when it provides better illumination while switching to mirror mode when environmental conditions or display failures make it unsuitable.
Solution Approach 2:
The system continuously monitors display operation status and environmental conditions, using this feedback to automatically switch between display and mirror modes. This feedback mechanism enables the system to adapt to display failures and environmental factors while maintaining optimal visibility through appropriate mode selection.
Data Source
AI summary
A motor vehicle includes a rearview mirror display system with a visible surface and having a mirror mode and a display mode. The visible surface functions as a mirror in the mirror mode. The visible surface displays an electronically produced image in the display mode. An electronic processor is communicatively coupled to the rearview mirror display system. The electronic processor detects that the display mode is not operating properly, and, in response to the detecting, automatically switches the rearview mirror display system from the display mode to the mirror mode.