Vehicle Device Authentication Seamless Content Switching
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Solution Overview
Problem
Existing vehicle-mounted systems experience temporary disruptions and user annoyance due to authentication processing when changing the output device, such as when switching from displaying digital video content on both front and back seat monitors to only the front seat monitor, or when connecting additional HDMI-compatible devices like smartphones.
Innovation Solution
A vehicle-mounted device with multiple authentication stages and a determination mechanism that authenticates devices based on conditions, allowing seamless switching and relaying of digital content between devices without immediate interruption, using first, second, and third authentication means, and content output stop control to manage device connections and outputs effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device authentication is performed when changing the output device or connecting additional HDMI-compatible devices, then device compatibility and security are improved, but temporary blackouts and user annoyance occur
Solution Approach 1:
The system performs preliminary actions by storing authentication information and device connection states before authentication is required. When a device is connected or output is changed, the system has already prepared authentication data, allowing verification to occur without interrupting content output to previously authenticated devices.
Solution Approach 2:
The vehicle-mounted device acts as an intermediary that manages authentication between multiple HDMI-compatible devices. It maintains authentication states for different devices and coordinates the authentication process, allowing seamless switching between devices without requiring full authentication procedures that would cause blackouts.
2Reliability
If the digital video content distribution is stopped temporarily during authentication processing, then proper device authentication is achieved, but the video temporarily blacks out causing user annoyance
Solution Approach 1:
The system maintains continuity of useful action by keeping content output active to already authenticated devices during the authentication process. When output is changed to a new device or additional devices are connected, the system continues distributing content to existing devices while performing authentication in the background, eliminating video blackouts.
Solution Approach 2:
Authentication information is prepared and stored in advance for multiple devices. When authentication is needed, the system retrieves pre-stored authentication data rather than performing complete authentication procedures, significantly reducing authentication time and preventing video interruptions.
3Adaptability or versatility
If multiple HDMI-compatible devices are connected and authenticated, then device versatility is improved, but system complexity increases
Solution Approach 1:
The authentication management system is segmented into modular components that handle individual devices independently. Each HDMI-compatible device has its own authentication record and state, allowing the system to manage multiple devices through standardized, isolated authentication modules rather than complex interdependent verification processes.
Solution Approach 2:
The vehicle-mounted device implements a universal authentication management system that handles multiple types of HDMI-compatible devices (display devices, audio devices, etc.) through a single integrated authentication protocol. This multi-functional approach simplifies complexity by providing a unified method for managing diverse device connections rather than requiring separate authentication mechanisms for each device type.
Data Source
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AI summary
To provide a "vehicle-mounted device" capable of making it less likely for a user to feel annoyed by a change in an output of a connected device due to authentication processing. The vehicle-mounted device includes first authentication means (S12) for performing first authentication processing in which, when a first device is connected to an output unit, the vehicle-mounted device is authenticated as a source device and the first device is authenticated as a sink device, second authentication means (S 15) for performing second authentication processing in which, when a second device is connected to the input unit while a digital content is output to the first device from the output unit, the vehicle-mounted device is authenticated as the sink device and the second device is authenticated as the source device, determination means (S18), and third authentication means (S20) for performing third authentication processing in which the vehicle-mounted device is authenticated as a repeater device when a condition for providing the digital content from the second device to the first device is determined to be satisfied by the determination means.