Vehicle Display Failover Switching for Multi-SoC Fault Tolerance
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Solution Overview
Problem
As the number of displays in vehicles increases, existing technologies face challenges in efficiently managing and controlling multiple System on Chips (SoCs) for effective operation and fault tolerance, particularly in ensuring continuous display of safety information during faults or failures.
Innovation Solution
A device with multiple SoCs and switches that allow for fail-over operations, enabling one SoC to take over the functions of another in case of failure, ensuring continuous display of critical information and facilitating quick recovery of faulted components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple SoCs are used to control multiple displays, then the functionality and information display capability are improved, but the system complexity and difficulty of management increase
Solution Approach 1:
The system divides the display control function into multiple independent SoCs, where each SoC can independently control one or more displays. This segmentation allows the system to handle multiple displays simultaneously while maintaining manageable complexity through modular architecture.
Solution Approach 2:
Each SoC is designed with universal functionality to execute different applications and control different displays. The switches enable any SoC to take over any display, creating a multi-functional system where components can serve multiple purposes depending on operational requirements.
2Reliability
If multiple SoCs are implemented for fault tolerance, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The system pre-configures multiple SoCs and switches in a standby arrangement before faults occur. When a fault is detected, the switches automatically redirect signals to a healthy SoC, eliminating the need for complex real-time decision-making algorithms and reducing operational complexity.
Solution Approach 2:
Switches serve as intermediary components between SoCs and displays, simplifying the fault tolerance mechanism. Instead of requiring complex inter-SoC communication protocols or intelligent routing logic, the switches provide a straightforward physical or logical path for signal redirection during fault conditions.
3Reliability
If switches are added for fail-over operations, then the reliability is improved, but the device complexity and number of components increase
Solution Approach 1:
The switch functionality is merged with the existing display control architecture rather than being completely separate. The switches are integrated into the signal path between SoCs and displays, allowing fail-over operations to occur within the existing control framework without requiring entirely separate redundant systems.
Solution Approach 2:
The switches are designed with universal connectivity to work with any SoC and any display, reducing the need for multiple specialized switch components. A single switch configuration can handle fail-over for multiple display channels, minimizing the total number of components required.
Data Source
AI summary
A vehicle apparatus according to one embodiment of the present invention comprises: a first control unit for executing a first application for a display, wherein the first control unit transmits display information about the first application to a first display unit; a second control unit for executing a second application for the display, wherein the second control unit transmits display information about the second application to a second display unit; a first switch unit connected to the first control unit and the second control unit, wherein the first switch unit receives the display information about the first application and the display information about the second application from the first control unit and the second control unit so as to transmit the display information about the first application and the display information about the second application to the first display unit and the second display nit, respectively; and a second switch unit for receiving the display information about the first application and the display information about the second application from the first control unit and the second control unit, respectively.


