Vehicle Dashboard Wireless Display Authentication
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Solution Overview
Problem
Existing wireless display systems face challenges in securely authenticating and communicating between a wireless source device and a vehicle dashboard sink device, particularly in ensuring secure data transmission and managing user inputs in diverse automotive systems.
Innovation Solution
The system employs a manufacturer-authenticated application on the source device to communicate with the dashboard sink device, using encryption and authentication keys to secure the communication channel, and adjusts operations based on the vehicle's state, such as moving or stopped, to limit dangerous functions while driving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless communication is implemented between source device and dashboard sink device, then data transmission capability is improved, but security risks increase
Solution Approach 1:
The system performs authentication and key exchange before establishing the wireless communication channel. The source device and dashboard sink device authenticate each other and establish encryption keys prior to data transmission, preventing unauthorized access and ensuring secure communication from the outset
Solution Approach 2:
The patent introduces an authentication mechanism as an intermediary layer between the source device and dashboard sink device. This intermediary verifies identities and manages encryption keys, acting as a security gateway that enables wireless communication while filtering out unauthorized access attempts
2Adaptability or versatility
If multiple user input types are supported in diverse automotive systems, then system versatility is improved, but communication complexity increases
Solution Approach 1:
The patent implements a universal data packet format that can accommodate multiple types of user inputs (touch, voice, gesture, button presses) through a standardized structure. The data packet includes fields for input type identification, coordinates, and payload data, allowing diverse input modalities to be transmitted through a single communication protocol without requiring separate protocols for each input type
Solution Approach 2:
The system uses parameter-based differentiation within the standardized data packet format. By changing specific parameters such as input type identifiers, coordinate systems, and payload structures based on the detected input modality, the system supports multiple input types while maintaining a consistent communication framework, reducing the need for multiple specialized protocols
3Reliability
If authentication and encryption are implemented for secure communication, then security is improved, but processing time increases
Solution Approach 1:
Authentication and key exchange are performed once during the connection establishment phase before data transmission begins. The source device and dashboard sink device complete mutual authentication and establish encryption keys in advance, so that subsequent data transmissions use the pre-established secure channel without repeated authentication overhead
Solution Approach 2:
Once authentication is complete and encryption keys are established, the secure communication channel remains active and continuous for the duration of the data transmission session. This eliminates the need for repeated authentication handshakes during ongoing communication, maintaining security while minimizing processing time delays
Data Source
AI summary
A wireless source and an automobile dashboard configured to function as a wireless sink device are configured to communicate with one another including authenticating the source device for communications with the dashboard sink, transmitting user inputs received at the dashboard sink back to the wireless source device to enable a user to control the source device and interact with and control the content that is being transmitted from the source device to the dashboard sink, controlling the operational state of the source device based on the operational state of the automobile in which the dashboard sink is arranged, and transmitting data generated by the automobile from the dashboard sink to the source device so as to enable the source device to process at least some of the data.