IP-Based Vehicle Infotainment System Decoupling
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Solution Overview
Problem
Existing infotainment systems in vehicles face challenges in flexible networking and utilization of functions between system components, requiring costly and complex integration with vehicle development cycles, limiting the ability to extend functionality with external devices and innovate independently.
Innovation Solution
An IP-based functional system with separable system units that use a reproduction rule to transmit and evaluate data, allowing for flexible communication and linking of Internet-capable devices, enabling scalable extension and independent development of system components without coupling to vehicle development cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional infotainment systems use integrated architecture with fixed interfaces, then system stability is maintained, but adaptability and flexibility for external device integration are limited
Solution Approach 1:
The system is divided into separate functional units (infotainment system, vehicle control units, external devices) that communicate through standardized IP-based interfaces. This segmentation allows each component to be developed independently while maintaining overall system stability through protocol-based communication rules.
Solution Approach 2:
The patent implements a universal IP-based communication interface that enables multiple types of devices (mobile phones, tablets, navigation systems, audio equipment) to integrate with the vehicle's infotainment system. This universal interface replaces multiple proprietary connectors and communication protocols, simplifying integration while expanding versatility.
2Productivity
If system components are tightly coupled to vehicle development cycles, then manufacturing precision and integration reliability are improved, but productivity and development speed are reduced
Solution Approach 1:
The patent establishes standardized IP-based communication protocols and data formats in advance, before actual system integration occurs. These pre-defined communication rules enable different system components to be developed independently by different teams while ensuring reliable integration later, as the communication interface is already prepared and documented.
3Adaptability or versatility
If all system data are made universally accessible, then adaptability for external devices is improved, but security and access control become more difficult to maintain
Solution Approach 1:
The patent introduces an intermediary authentication and authorization layer between external devices and vehicle data. This intermediary component verifies the identity of connecting devices, evaluates their access rights, and mediates data exchange accordingly. This maintains security while enabling flexible device integration, as authorized devices can access appropriate data through the controlled interface.
Data Source
AI summary
A method for operating an Internet-Protocol-based functional system in a vehicle with at least two system units separatably connected to one another in which a local IP address is respectively allocated to a first system unit and to a second system unit and data are transmitted between the first system unit and the second system unit with a reproduction rule for the purpose of carrying out a first function, wherein one of the system units acts as a transmitting system unit and the other system unit acts as a receiving system unit. The data are evaluated in the receiving system unit with the reproduction rule, the reproduction rule is used to refer to a memory location of a memory associated with the execution program code for the first function, and the first function is carried out via the receiving system unit using the data in the reproduction rule.