Display System Dual-Channel Backup for Transmission Failure
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Solution Overview
Problem
Conventional display systems are prone to failures in image-data transmission, which can lead to incomplete information being displayed on the panel, posing safety risks, especially for vehicle users, as the high throughput of image data makes failures more likely than parameter data transmission.
Innovation Solution
A display system with a control module containing both an image processing unit and an image compositing unit, utilizing two channels for data transmission, where the image processing unit generates an image signal from image and parameter data when the first channel is operational, and the image compositing unit combines response data with a pre-determined background to create an image signal when the first channel fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the image-data transmission interface uses high throughput to display detailed pictures, then the display quality and information completeness are improved, but the probability of transmission failure increases significantly
Solution Approach 1:
The transmission system is segmented into two independent channels: the first channel (interface 15) transmits high-volume image data for complete picture display, while the second channel (interface 16) transmits critical parameter data for essential information display. This segmentation ensures that if one channel fails, the other can still provide important information, thus resolving the contradiction between information completeness and transmission reliability.
Solution Approach 2:
The system performs preliminary action by pre-processing and separating image data from parameter data before transmission. The parameter data (such as vehicle speed, engine temperature, fuel level) is extracted and transmitted through the more reliable second channel in advance, ensuring that critical information can be displayed even if the primary image-data transmission channel fails.
2Productivity
If the system transmits all image data through a single primary channel, then the data transmission efficiency is maximized, but the system vulnerability to single-point failure increases
Solution Approach 1:
The transmission system is divided into two independent channels with different functions. The first channel handles high-volume image data transmission for optimal efficiency, while the second channel handles critical parameter data transmission for reliability. This segmentation allows the system to maximize efficiency on the primary channel while maintaining reliability through the secondary channel.
Solution Approach 2:
The system changes transmission parameters by using different data formats and transmission protocols for different types of data. Image data is transmitted with high throughput requirements, while parameter data is transmitted with higher reliability requirements, allowing each channel to be optimized for its specific function while providing overall system resilience.
3Reliability
If the system uses a backup transmission channel for critical data, then the system reliability is improved, but the device complexity increases due to multiple transmission interfaces
Solution Approach 1:
The control module 12 is designed with multi-functionality, containing both an image processing unit 14 for processing image data and an image compositing unit 141 for composing display information from parameter data. This universal design allows a single control module to handle both transmission channels and process different data types, reducing overall system complexity while maintaining reliability.
Solution Approach 2:
The image processing unit 14 and image compositing unit 141 are merged within the same control module 12, sharing common resources such as processing power, memory, and output interfaces to the display panel 13. This merging reduces the number of separate components needed while still providing redundant transmission paths for different types of data.
Data Source
AI summary
This disclosure provides a display system, which comprises: a mainframe; a control module comprising an image processing unit and an image compositing unit, communicating with the mainframe through a first channel and a second channel, and generating an image signal; and a display panel showing pictures according to the image signal; wherein the mainframe provides the image processing unit with image data, parameter data and control signals through both the first and second channels when the first channel works, and the image processing unit processes the image data and the parameter data and generates a first data signal to be the image signal; wherein the mainframe provides the image compositing unit with response data through the second channel when the first channel fails, and the image compositing unit combines the response data and a pre-determined background into a second data signal to be the image signal.