Vehicle Master Port Buffering for Synchronized DSI Command Transmission
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Solution Overview
Problem
Conventional communication systems face challenges in synchronizing two or more slave apparatuses, leading to measurement variations and inaccurate distance estimation in applications like sonar systems.
Innovation Solution
A communication apparatus with multiple master ports and buffer memories, using the DSI protocol to communicate with slave apparatuses, which includes a control circuit to sort and store commands and transmit them simultaneously to ensure synchronization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional communication methods are used without dedicated buffer memories and simultaneous transmission control, then device complexity is reduced, but synchronization precision between multiple slave apparatuses deteriorates
Solution Approach 1:
The patent divides the command transmission system into separate buffer memories for each master port (first buffer memory for first master port, second buffer memory for second master port). This segmentation allows independent storage and control of commands for different slave apparatuses, enabling precise synchronization by reading from multiple buffers simultaneously without interference, thus resolving the synchronization precision issue while maintaining manageable device complexity through modular architecture.
Solution Approach 2:
The patent implements preliminary action by pre-storing commands in dedicated buffer memories before transmission. The control circuit reads commands from the buffer memories in advance and prepares them for simultaneous transmission to multiple slave apparatuses. This preliminary storage and preparation ensures that when transmission is triggered, all commands are ready to be sent at the exact same timing, achieving precise synchronization without requiring complex real-time coordination.
2Measurement precision
If commands are transmitted to multiple slave apparatuses simultaneously using separate buffer memories and master ports, then synchronization precision is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing the master apparatus with multiple master ports and buffer memories that can handle different slave apparatuses through the same DSI protocol framework. The control circuit uses a unified simultaneous transmission control mechanism that works across all master ports, allowing the system to scale to different numbers of slave apparatuses without fundamentally changing the architecture. This multi-functional design achieves synchronization precision while controlling device complexity through standardized interfaces and protocols.
Data Source
AI summary
A communication apparatus installed on a vehicle as a master apparatus includes: a slave port communicating with an on-vehicle control apparatus; two or more master ports are paired with two or more slave apparatuses installed on the vehicle, and communicate with the two or more slave apparatuses using different channels based on Distributed System Interface (DSI) protocol; two or more buffer memories provided corresponding to the two or more master ports; and a control section sorting and storing commands addressed to the two or more slave apparatuses, respectively, from the on-vehicle control apparatus into the two or more buffer memories, respectively, and when receiving a trigger instructing transmission of the commands from the on-vehicle control apparatus, reading the commands from the two or more buffer memories, and simultaneously transmitting the commands from the two or more master ports, respectively.