In-Vehicle Terminal Gateway Separating Command and Content Data
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Solution Overview
Problem
Existing in-vehicle network systems require high-performance gateways for content transmission, which increases costs and complicates support for high-quality sound and image content, as they need to handle both command and content data, making them expensive and difficult to maintain.
Innovation Solution
A terminal apparatus with a gateway that separates command and content data transmission over a CAN bus, allowing the terminal to directly transmit content to an in-vehicle audio apparatus without increasing gateway demands, thus reducing the need for high-performance gateways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a gateway is used to transmit both command and content data between terminal apparatus and in-vehicle apparatus, then content transmission is enabled, but gateway device performance requirements increase and cost increases
Solution Approach 1:
The patent segments the data transmission function by separating command data transmission (through gateway via CAN bus) from content data transmission (direct peer-to-peer connection). This segmentation allows the gateway to handle only control signals while content transmission occurs directly between terminal and in-vehicle apparatus, reducing gateway performance requirements and cost.
2Manufacturing precision
If a high-performance gateway is used to support high-quality sound and image content, then content quality is improved, but device cost increases
Solution Approach 1:
The patent extracts the content data transmission function from the gateway and implements it directly between terminal apparatus and in-vehicle apparatus. This extraction allows high-quality content transmission without requiring the gateway to have high performance, thereby reducing device cost while maintaining content quality.
3Ease of operation
If the gateway handles all data transmission tasks, then communication is simplified, but gateway cost and maintenance difficulty increase
Solution Approach 1:
The patent divides communication tasks into two segments: command control (through gateway) and content data transfer (direct connection). This segmentation reduces the gateway's workload and performance requirements, making it cheaper and easier to maintain, while still providing simplified communication through clear role separation.
Data Source
AI summary
A terminal apparatus includes by way of a gateway apparatus that performs communication with an in-vehicle apparatus capable of playing back a content through a CAN bus, a first communication section that transmits command information for changing a mode of the in-vehicle apparatus to the in-vehicle apparatus, and a second communication section that transmits content data to the in-vehicle apparatus.