Universal Input-Output Interface Circuit for Automotive Protocol Conversion
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Solution Overview
Problem
In automotive vehicles, connecting a micro-controller device to various data networks with different communication protocols requires multiple interface circuits and manual selection, leading to increased complexity and storage needs for operators.
Innovation Solution
An integrated circuit with input and output terminals, multiple interface circuits for protocol conversion, and a switch circuit that determines and connects the correct communication lines based on the network protocol, allowing a single device to communicate with multiple data networks using a standard interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple dedicated interface circuits are provided for different data networks, then compatibility with various network protocols is improved, but device complexity and operator storage needs increase
Solution Approach 1:
The patent implements a universal interface circuit that can handle multiple data network protocols (CAN, LIN, MOST, FlexRay) through a single multi-functional device. The circuit includes protocol identification logic that automatically detects the network type and configures appropriate communication parameters, eliminating the need for multiple dedicated interface circuits while maintaining full protocol compatibility
Solution Approach 2:
The patent introduces an intermediary protocol conversion layer between the micro-controller and various data networks. This intermediary circuit translates and adapts communication protocols, allowing a single micro-controller interface to communicate with multiple different network types through standardized conversion mechanisms
2Adaptability or versatility
If multiple dedicated interface circuits are provided for different data networks, then protocol-specific communication is improved, but ease of operation deteriorates due to manual selection requirements
Solution Approach 1:
The interface circuit incorporates automatic protocol detection and self-configuration capabilities. Upon connection, the circuit automatically identifies the data network protocol type through signal analysis and configures the appropriate communication parameters without requiring manual operator intervention for selection or setup
Solution Approach 2:
The patent implements pre-configured protocol templates and automatic detection mechanisms that prepare the interface circuit in advance for various network types. The system pre-loads communication parameters and protocols, enabling automatic recognition and configuration when a specific network is detected, eliminating manual setup requirements
Data Source
AI summary
A circuit for enabling communication between a micro-controller device and a number of data networks using different network protocols comprises a switch circuit and a number of interface circuits. The switch circuit is configured to connect input-output terminals of the data network to corresponding terminals of the interface circuits. The interface circuits are configured to convert the data formatted according to the network protocol of the data network to data formatted in accordance with the micro-controller device communication protocol.