Vehicle Display Signal Processing with Zone Authentication Encryption
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Solution Overview
Problem
The complexity of signal processing in vehicles with multiple displays leads to security concerns in data transmission among signal processing devices, particularly in high-performance integrated display systems.
Innovation Solution
A signal processing device with a secured storage device and processor that executes a secure server for authentication and encryption, managing security keys and encrypted data transmission among zone signal processing devices, and classifying security levels based on Automotive Safety Integrity Level (ASIL) ratings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple signal processing devices are used to handle complex display signals in vehicles, then signal processing capability is improved, but data transmission security deteriorates
Solution Approach 1:
The system divides the vehicle display system into multiple zone signal processing devices (first zone, second zone, third zone, fourth zone), each handling specific display signals independently. This segmentation allows complex signal processing while maintaining security through distributed authentication and encryption management.
Solution Approach 2:
A policy table acts as an intermediary mechanism between signal processing devices, storing and managing authentication credentials, encryption keys, and security policies. This intermediary enables secure data transmission by mediating the authentication and encryption processes between multiple zone devices without requiring direct trust relationships.
2Reliability
If authentication and encryption are implemented among multiple signal processing devices, then data transmission security is improved, but system complexity increases
Solution Approach 1:
The policy table serves multiple functions simultaneously: storing authentication credentials, managing encryption keys, maintaining security policies, and tracking device identities. This multi-functionality reduces system complexity by consolidating security management into a single universal structure rather than requiring separate mechanisms for each security function.
Solution Approach 2:
The system dynamically changes security parameters (authentication credentials, encryption keys, security policies) stored in the policy table based on different transmission scenarios and device identities. This allows flexible security management without requiring complex hard-coded security logic, simplifying the overall system architecture.
Data Source
AI summary
The present disclosure relates to a signal processing device, and a vehicle display device having same. A signal processing device according to one embodiment of the present disclosure comprises: a security storage device that stores an electronic signature from an external server; and a processor that performs authentication with a plurality of area signal processing devices, wherein the processor executes a security server for performing authentication with the plurality of area signal processing devices, and the security server transmits a security key and encrypted data to at least one of the plurality of area signal processing devices. Thereby, it is possible to enhance security during data transmission between a plurality of signal processing devices in a vehicle.