Vehicle Display Data Verification for Dashboard Image Integrity
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Solution Overview
Problem
Image data displayed by LCD dashboards in transportation means, such as vehicles, is often damaged during transmission, leading to incorrect display and posing safety hazards due to inconsistent or missing critical information.
Innovation Solution
Establish bidirectional communication paths between the control and display modules using LVDS, enabling data verification and correction through CRC or hash algorithms to ensure accurate image display, with adjustment information sent via a third path for correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If image data is transmitted from control module to display module using single transmission path, then device complexity is reduced, but image data integrity deteriorates due to damage during transmission
Solution Approach 1:
The transmission path is segmented into a first transmission path for sending first image data from control module to display module, and a second transmission path for sending second image data from display module to control module. This segmentation allows independent verification of data integrity without significantly increasing overall system complexity.
Solution Approach 2:
The second transmission path provides feedback mechanism where the control module receives second image data from the display module and compares it with the first image data. This feedback loop enables detection of transmission errors and ensures data integrity through bidirectional communication.
2Measurement precision
If bidirectional communication paths are established for data verification, then image data accuracy is improved, but device complexity increases
Solution Approach 1:
The system creates a copy of the image data transmission in reverse direction. The first image data sent from control module to display module is copied and returned as second image data through the second transmission path, enabling verification without requiring completely separate communication channels.
Solution Approach 2:
The bidirectional transmission paths serve multiple functions: they transmit image data for display, enable data integrity verification through comparison, and provide feedback for error detection. This multi-functionality reduces the need for additional dedicated verification channels.
3Speed
If image data is transmitted without verification mechanism, then transmission speed is maintained, but loss of information occurs due to undetected damage
Solution Approach 1:
The verification mechanism operates in parallel with data transmission. The second image data is transmitted back through the second transmission path simultaneously or immediately after the first image data, allowing verification without significantly delaying the primary display function.
Data Source
AI summary
An image display system of a transportation means and an image display method of the transportation means are provided, and pertain to the field of image display technologies. In the image display system and the image display method, a first transmission path and a second transmission path are established between a control module and a display module. The control module may compare first image data transmitted through the first transmission path with second image data transmitted through the second transmission path, to determine that first displayed content is inconsistent with second displayed content, and therefore, to provide a reference basis for subsequent processing (for example, processing such as giving an alarm prompt or correcting the second displayed content) by the control module. According to the method, whether content displayed by the display module is accurate can be determined.