Display Image CRC Segmentation for Critical Vehicle Data Checks
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Solution Overview
Problem
There is a need for a method to check errors in critical information displayed on vehicle displays, which can impact vehicle safety, and to selectively transmit cyclic redundancy check (CRC) data for important areas through a separate communication line.
Innovation Solution
A data transmission method that generates CRC data for specific regions of image data and transmits it through a separate communication line, allowing for error detection in important areas by comparing generated and received CRC data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CRC data is transmitted through the same communication line as image data, then the communication line structure remains simple, but error detection capability for critical areas is insufficient
Solution Approach 1:
The patent divides the image data into multiple regions (e.g., critical area and non-critical area) and generates separate CRC data for each region. This segmentation allows targeted error detection for critical areas while maintaining efficient transmission for non-critical areas, resolving the contradiction between comprehensive error detection and communication efficiency.
Solution Approach 2:
The patent introduces a separate communication line (second communication line) specifically for transmitting CRC data, while image data continues to use the first communication line. This intermediary channel enables reliable error detection without interfering with the main data transmission path, thus improving reliability without significantly complicating the overall communication structure.
2Reliability
If CRC data for all image data regions is transmitted, then comprehensive error detection is achieved, but transmission bandwidth and communication efficiency are reduced
Solution Approach 1:
The patent applies different quality levels of error detection to different regions of the image data. Critical areas (such as brake information, steering information, collision warning) receive full CRC error detection, while non-critical areas use reduced or no error detection. This local differentiation ensures safety for critical information while maintaining communication efficiency overall.
Solution Approach 2:
Instead of applying full error detection to all image data regions, the patent implements partial error detection only where necessary (critical areas). This partial action approach achieves sufficient reliability for safety-critical functions without the overhead of comprehensive error detection across the entire image data stream.
3Measurement precision
If separate communication line for CRC data is used, then error detection accuracy for critical areas is improved, but device complexity increases
Solution Approach 1:
The patent segments the communication into two distinct channels: one for image data transmission and another for CRC data transmission. This segmentation enables precise error detection for critical areas through the dedicated CRC channel while keeping the image data channel simple and efficient, thus improving measurement precision without excessive complexity.
Data Source
AI summary
Embodiments are related to a display processing device, a data transmission method, and an image data inspection method, and provide a device and method for checking whether image data transmitted through a transmission line has errors.