Display Driver CRC Inspection for Vehicle Image Data Errors
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Solution Overview
Problem
There is a need for a method to inspect and prevent errors in critical data displayed on vehicle displays, which can impact safety, as existing technologies do not effectively check for errors in important regions of information displayed on such systems.
Innovation Solution
A method involving cyclic redundancy check (CRC) data is used to inspect image data, where CRC data is generated and compared to detect errors, and upon detection, errors are displayed on the screen or the data is retransmitted to ensure accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If CRC inspection is implemented for image data transmission, then reliability of displayed information is improved, but device complexity increases due to additional error checking mechanisms
Solution Approach 1:
The patent applies preliminary action by generating CRC data in advance at the display processing device before transmitting image data to the display driving device. This allows the receiving device to perform error checking without needing complex error correction capabilities, as the verification data is prepared beforehand and transmitted alongside the image data.
Solution Approach 2:
The patent uses CRC data as an intermediary element that facilitates reliable data transmission without requiring complex error correction mechanisms. The CRC data acts as a mediator that enables simple comparison-based error detection at the receiving end, resolving the contradiction between reliability and complexity by introducing a lightweight verification mechanism.
2Reliability
If error detection and retransmission mechanisms are added to ensure data accuracy, then reliability is improved, but loss of time increases due to additional transmission cycles
Solution Approach 1:
The patent applies preliminary action by pre-calculating and transmitting CRC data along with the image data in the same transmission cycle. This eliminates the need for additional time-consuming error correction computations at the receiving end, as all verification data is prepared in advance and transmitted simultaneously with the primary data.
Solution Approach 2:
The patent implements skipping by enabling the display driving device to quickly detect errors through simple CRC comparison and immediately request retransmission only when necessary. This approach rushes through the normal transmission process efficiently and only intervenes with retransmission when actual errors are detected, minimizing time loss while maintaining high reliability.
Data Source
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AI summary
A display driving device, a data transmission method, and an image data inspection method are disclosed. According to at least one of various embodiments, a method of inspecting image data in a display driving device can include receiving data for one frame including image data and first cyclic redundancy check (CRC) data for the image data from a display processing device; generating second CRC data for the image data of the frame; and controlling to display an occurrence of an error through a display screen when it is determined that the error has occurred in the image data of the frame based on a comparison result of the first CRC data and the second CRC data.