Vehicle Image Display Control with Priority-Based Memory Segmentation
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Solution Overview
Problem
Conventional image display systems in vehicles struggle to prioritize and display important information quickly, often replacing critical images with less urgent ones due to limited screen space and constant display speed, leading to delayed dissemination of urgent information.
Innovation Solution
An image display control apparatus that loads image data based on priority, using separate virtual display areas for safety-related and normal applications, ensuring immediate display of high-priority images and efficient management of screen space through split-screen and screen-resized displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the latest display request is always prioritized, then the display device can respond quickly to new inputs, but important information from earlier high-priority images may be lost
Solution Approach 1:
The system performs preliminary actions by loading image data into the image memory in advance based on display priorities before actual display requests occur. This allows high-priority images to be pre-loaded and ready for immediate display when needed, resolving the contradiction between fast response and information preservation
Solution Approach 2:
The display memory is segmented into different priority levels, allowing the system to manage and retrieve images from different priority queues. This segmentation enables the display controller to quickly access high-priority images while maintaining a buffer of important information, thus achieving both fast response and information preservation
2Ease of operation
If the same constant display process is used for all images, then the system is simple to operate, but urgent information cannot be displayed immediately
Solution Approach 1:
The display process is made dynamic by adjusting the display priority and loading speed based on the urgency level of different images. The system automatically transitions from a constant display process to a variable priority-based process, achieving fast display of urgent information while maintaining operational simplicity through automated control
Solution Approach 2:
The system changes the display parameters (priority level, loading speed, display timing) based on the urgency of the information. By dynamically adjusting these parameters, the system can display urgent information immediately while maintaining simple operation through automated parameter selection
3Loss of information
If all requested images are loaded into memory, then complete information is preserved, but memory resources are wasted on low-priority images
Solution Approach 1:
Different regions of the image memory are allocated different qualities and priorities. High-priority images receive premium memory allocation with faster access and longer retention, while low-priority images are stored in secondary memory areas with slower access. This local quality differentiation preserves important information while optimizing memory resource usage
4Area of stationary object
If the display screen shows only one image at a time, then the display area is fully utilized, but multiple important images cannot be shown simultaneously
Solution Approach 1:
The system adds a temporal dimension to the display by showing multiple images in sequence at different timings based on their priority levels. Instead of trying to display all images simultaneously on the same screen area, the system uses time-based multiplexing to present multiple important images while maintaining full display area utilization for each individual image
Data Source
AI summary
An image-data loading unit loads image data of an image requested to be displayed based on an input signal in an image memory. A display-image determining unit determines an image to be displayed on the display device based on a priority of the image after the image data is loaded in the image memory. An image-data output unit reads out the image data of the image determined to be displayed by the display-image determining unit from the image memory, and outputs read image data to a display device.