Vehicle Head-Up Display Image Extraction Controller
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Solution Overview
Problem
Conventional head-up displays in vehicles face challenges in displaying information from navigation systems due to size restrictions and limited resolution, making it difficult to post-install them in vehicles already equipped with navigation apparatuses, especially when these systems lack output terminals or have different display capabilities.
Innovation Solution
A controller-acquired first display image is processed to extract relevant portions based on layout information, generating a second display image suitable for the head-up display, allowing compatibility with various navigation apparatus models and enabling post-installation in vehicles with existing navigation systems, even without video output terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a head-up display is disposed in the vicinity of user's visual field, then the user can view information while driving, but the display size is restricted and resolution is lower compared to liquid crystal panels
Solution Approach 1:
The patent extracts and displays only the most essential navigation information (route guidance, distance to destination, main road names) on the head-up display, separating critical safety-related information from detailed navigation data that can be viewed on the main navigation screen. This extraction approach allows the head-up display to provide necessary information within its size constraints without requiring to display all navigation details.
2Ease of operation
If the head-up display is disposed in the vicinity of user's visual field, then the user can view information while driving, but the resolution is not as high as liquid crystal panels
Solution Approach 1:
The patent applies local quality by displaying high-contrast, large-font information for critical navigation data on the head-up display, while detailed information with smaller text is reserved for the high-resolution navigation screen. The head-up display focuses on displaying only essential information with optimized visual characteristics suitable for its resolution, rather than attempting to display all information at high detail levels.
3Ease of manufacture
If the navigation apparatus has no output terminal for outputting information, then the connection to external devices is not expected, but it becomes impossible to transmit information to the head-up display
Solution Approach 1:
The patent introduces an image processing unit as an intermediary component that receives video signals from the navigation apparatus (either directly or via camera capture of the display), processes the images to extract navigation information, and outputs the processed data to the head-up display. This intermediary approach enables compatibility with navigation apparatuses that lack direct output terminals, allowing post-installation of head-up displays in vehicles with existing navigation systems.
4Area of stationary object
If image processing is required to convert information for the head-up display, then compatibility with various navigation apparatus models is reduced
Solution Approach 1:
The patent designs the image processing unit with universal functionality to handle multiple types of navigation apparatus outputs through a single interface. The system can process both direct video signals and camera-captured images, automatically adapting to different navigation apparatus models without requiring model-specific processing configurations. This universal approach simplifies the overall system while maintaining compatibility across various navigation devices.
Data Source
AI summary
An on-vehicle display apparatus includes a controller configured to acquire a first display image to be displayed on a display of a navigation apparatus, extract a portion of the first display image based on a layout information relevant to a layout of the first display image, and generate a second display image by use of the extracted part of the image, and displays on a head-up display the second display image generated by the controller. The display apparatus displays on the head-up display a guide image generated by the controller. It is possible to display an image of the navigation apparatus on the head-up display, without a connection between the navigation apparatus and the display apparatus.