On-board Data Management Unit for Vehicle HMI Security
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Solution Overview
Problem
Existing on-board vehicle systems face challenges in ensuring data security without modifying the configuration of human-machine-interface (HMI) units, which are integral to performing HMI functions and exchanging data with external servers.
Innovation Solution
An on-board device and non-transitory storage medium that include a processor with an acquisition unit for vehicle data, an HMI unit for performing HMI functions, and a data management unit that categorizes and selectively delivers data to the HMI unit, excluding sensitive information, thereby ensuring data security without altering the HMI unit's configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all vehicle data is delivered to the HMI unit without exception, then the HMI unit can access all necessary information for its functions, but data security is impaired due to transmission of sensitive information
Solution Approach 1:
The patent segments vehicle data into multiple categories based on sensitivity and delivery requirements. The data management unit classifies data into different categories (e.g., first category for deliverable data, second category for non-deliverable data) and selectively delivers only appropriate categories to the HMI unit, thereby maintaining data security while ensuring necessary data accessibility.
Solution Approach 2:
The data management unit acts as an intermediary between the acquisition unit and the HMI unit. It receives all acquired data, categorizes it according to predetermined criteria, and selectively forwards only appropriate data to the HMI unit. This intermediary mechanism prevents sensitive data from reaching the HMI unit while ensuring legitimate data flows smoothly.
2Reliability
If the HMI unit configuration is modified to enhance data security, then data protection improves, but the complexity of the system increases
Solution Approach 1:
Rather than modifying the HMI unit configuration, the patent introduces a data management unit as an intermediary that handles data security concerns. This approach protects sensitive data without requiring changes to the HMI unit's internal configuration, thereby maintaining system simplicity while achieving enhanced data security.
Solution Approach 2:
The data management unit autonomously performs data categorization and selective delivery based on predetermined criteria. It independently determines which data should be delivered to the HMI unit without requiring complex configuration changes or manual intervention, thereby simplifying the overall system architecture.
3Reliability
If data categorization and selective delivery is implemented, then data security is enhanced, but the device complexity increases
Solution Approach 1:
The patent implements data segmentation through automated categorization in the data management unit. Data is divided into distinct categories based on sensitivity and delivery requirements, with clear rules for which categories should be delivered to the HMI unit. This systematic segmentation approach manages complexity through structured classification rather than ad-hoc handling.
Solution Approach 2:
The system uses parameter-based categorization where data is classified according to predetermined parameters or criteria. The data management unit changes the delivery parameter based on data category, automatically deciding whether to deliver each data item to the HMI unit. This parameter-driven approach simplifies the management of data security policies.
Data Source
AI summary
An on-board device includes a processor. The processor is configured to operate as an acquisition unit configured to acquire data from a sensor mounted on a vehicle, a human-machine-interface (HMI) unit configured to perform a process for exerting a human-machine-interface (HMI) function, and a data management unit configured to make determination on a category of the data delivered from the acquisition unit and deliver, to the HMI unit, data in a first category that does not contain data that is not desired to be delivered to the HMI unit. The HMI unit is configured to perform the process for exerting the HMI function based on the data delivered from the data management unit.