Display Controller Segmentation for Safety Information Visibility
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Solution Overview
Problem
Existing vehicle information and entertainment systems can generate incorrect images due to hardware or software faults, potentially leading to dangerous situations by obscuring safety-relevant information.
Innovation Solution
A display controller system that separates safety-relevant and non-safety-relevant image data, using a merging unit to ensure safety information is always displayed prominently and securely, with an image monitor verifying the integrity of safety-relevant parts through comparison with reference data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If safety-relevant and non-safety-relevant information are displayed together on the same display, then the display can provide comprehensive information (video, navigation, safety data), but safety-relevant information may be obscured or replaced by non-safety-relevant content due to hardware or software faults
Solution Approach 1:
The display is divided into multiple independent display areas, each dedicated to specific types of information. Safety-relevant information is assigned to dedicated display areas that are independent from areas showing non-safety-relevant information like video or navigation. This segmentation ensures that faults in one area cannot obscure safety information in another area.
Solution Approach 2:
A merging unit acts as an intermediary component that receives image data from multiple sources and combines them into the final display output. This merging unit ensures proper composition of safety-relevant and non-safety-relevant information, preventing obscuration by coordinating the display of different information types in their designated areas.
2Device complexity
If the display controller generates all image data in a single integrated system, then the system is simpler to implement, but hardware or software faults can generate wrong images that may contain incorrect safety-relevant information
Solution Approach 1:
The image data generation process is segmented into separate functional units: a first image data generator for non-safety-relevant information and a second image data generator for safety-relevant information. This segmentation allows independent verification of safety-critical data generation while maintaining overall system functionality.
Solution Approach 2:
An image monitor is introduced to provide feedback by comparing the generated image data with reference data. This feedback mechanism detects discrepancies in safety-relevant information and can trigger appropriate responses, ensuring accuracy without requiring complete system redesign.
3Productivity
If the display shows multiple types of information simultaneously, then the system provides comprehensive vehicle information and entertainment, but the risk of dangerous actions increases if safety information is incorrectly displayed or obscured
Solution Approach 1:
By segmenting the display into dedicated areas for safety-relevant information, the system ensures that safety-critical data remains visible and cannot be obscured by entertainment or navigation content, thereby preventing dangerous driver actions while maintaining comprehensive information display capacity.
Solution Approach 2:
The merging unit serves as an intermediary that coordinates the display of multiple information types, ensuring that safety-relevant information is properly integrated into the overall display without being obscured, thus enabling comprehensive information presentation while mitigating harmful effects.
Data Source
Figure 1~2
Figure 3~4
AI summary
A display controller (3) includes a controller input (300,301 ) connectable to receive first image data representing a non-safety relevant part of an image to be displayed on a display (5) and to receive second image data representing a safety relevant part of the image. A merging unit (31 ) is connected to the controller input (300,301 ), for composing the image from the first image data and second image data. A controller output (33) is connectable to the display, for outputting display data representing the image. An image monitor (4) is connected to the controller output (33), for comparing a part of the image corresponding to the safety relevant part with an reference for the part.