Vehicle HMI Data Access Unification for Secure API Simplification
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Solution Overview
Problem
Existing vehicle systems lack the ability for Human Machine Interface (HMI) applications to read and write application-specific data efficiently, requiring separate API commands for property and application-specific data access, which complicates data management and security.
Innovation Solution
A unified API system is implemented in the vehicle's head unit to enable HMI applications to read and write both property and application-specific data using a single command set, with separate file paths for data storage and access control, ensuring secure and efficient data management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate API commands are used for property data and application-specific data access, then data security and organization are improved, but system complexity and ease of operation deteriorate
Solution Approach 1:
The patent combines separate API commands for property data and application-specific data into a single unified API interface. This allows HMI applications to access both types of data through one standardized interface, reducing system complexity while maintaining the security benefits of separate data categories through unified access control mechanisms.
Solution Approach 2:
The unified API serves multiple functions by handling both property data retrieval and application-specific data operations through a single command set. This multi-functional approach eliminates the need for separate API pathways while maintaining organized data access patterns and security protocols.
2Stability of the object's composition
If separate API commands are used for property data and application-specific data access, then data organization is improved, but ease of operation deteriorates
Solution Approach 1:
The patent merges separate data access operations into a unified API that handles both property data and application-specific data through consistent commands. This maintains organized data structures while significantly improving ease of operation by providing a single, standardized interface for all data access needs.
Solution Approach 2:
The universal API interface performs multiple data access functions through a single command set, allowing applications to retrieve both property and application-specific data without learning multiple API protocols. This preserves data organization while enhancing operational simplicity.
3Ease of operation
If HMI applications can read and write application-specific data through the same API as property data, then ease of operation is improved, but data security may deteriorate
Solution Approach 1:
The patent segments data into distinct categories (property data and application-specific data) while providing unified API access. This segmentation maintains security boundaries and organized data structures, allowing the system to offer ease of operation through a single API while preserving security through differentiated data handling and access control for each data type.
Data Source
AI summary
Unification of access to vehicle property data and HMI application specific data is performed by receiving, from an HMI application, a request to read data, determining whether the request is for property data, transmitting a requested value among the plurality of values stored in the first file path in response to determining that the request is for property data, and transmitting requested data among application specific data stored in a second file path in response to determining that the request is not for property data.