In-Vehicle Network High-Speed Data Processing via Length Detection
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Solution Overview
Problem
Existing in-vehicle network systems face challenges in processing high-priority data at high speeds due to the need for unique data formats, which are not suitable for real-time processing and can increase processing time, making them unsuitable for applications requiring rapid data transmission.
Innovation Solution
An in-vehicle network system is designed with a first and second control unit, where data is processed at different speeds based on data length, allowing high-priority data to be transmitted and received at a higher speed without requiring a unique data format or unique data, by determining the data length and using list data to identify high-speed processing data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a unique data format is used to identify high-priority data, then data identification is possible, but processing time increases and high-speed processing becomes difficult
Solution Approach 1:
The patent changes the identification parameter from unique data format to data length. By setting high-priority data to have a specific data length (e.g., maximum transmission unit length), the system can identify high-priority data through length comparison without requiring unique formats, thereby reducing processing time while maintaining identification accuracy.
2Productivity
If data is processed at high speed without unique format, then processing time is reduced, but data identification becomes difficult
Solution Approach 1:
The patent simplifies the identification mechanism by using data length as the distinguishing parameter. The transmission device sets high-priority data to a specific length, and the reception device identifies them through simple length comparison, avoiding complex format verification while maintaining high processing speed.
3Productivity
If template packets with unique format are used for high-speed processing, then processing efficiency is improved, but adaptability to different data types is reduced
Solution Approach 1:
The patent makes the high-speed processing mechanism universal by using data length rather than unique format. Any data type can be processed at high speed by simply setting its length to the predetermined value, without requiring format-specific template packets, thereby achieving both high efficiency and broad adaptability.
Data Source
AI summary
An in-vehicle network system includes a first control unit, a second control unit, and a network connecting the first control unit to the second control unit. The first control unit performs a process of transmitting data, which is target of high-speed processing, having a first data length obtained by dividing transmission data by the first data length or obtained by adding predetermined data to the transmission data as high-speed processing. The second control unit performs a process of receiving reception data at a first processing speed that is a low speed when the second control unit determines that a data length of the reception data is not the first data length, and performs a process of receiving the reception data at a second processing speed higher than the first processing speed when the second control unit determines that the data length of the reception data is the first data length.