Vehicle Controller Authentication via Server Relay

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Solution Overview

Problem

Existing moving object control systems fail to allow vehicle locking or unlocking when a communication line between the portable terminal and the control device is not established, due to issues like theft, power down, or communication failure.

Innovation Solution

A moving object control system that includes a server, a portable terminal, and a controller in the vehicle, where the controller can authenticate the portable terminal and control the vehicle using authentication information received from the server, even if direct communication with the portable terminal is lost, by utilizing a GPS tracker and relay circuit to execute locking or unlocking operations based on signals from the server.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If authentication information is transmitted only through direct communication between portable terminal and control device, then communication security is maintained, but system reliability deteriorates when communication line cannot be established

Engineering Contradiction:

Improvesystem reliabilityVSAvoidcommunication system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent introduces a server as an intermediary component that mediates between the portable terminal and control device. The server stores authentication information and can transmit it to the control device when direct communication between terminal and device fails, thereby maintaining system reliability without significantly increasing overall system complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements preliminary action by pre-storing authentication information on the server before communication failures occur. When the portable terminal and control device cannot establish direct communication, the server can immediately provide the pre-stored authentication information, eliminating the need for real-time authentication exchanges and ensuring reliable operation

Inventive Principle:

Principle #10Preliminary action

2Reliability

If multiple communication paths are established including server relay, then control availability is improved, but information security risk increases

Engineering Contradiction:

Improvecontrol availabilityVSAvoidinformation security risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The server acts as a secure intermediary that handles authentication information transmission. By centralizing authentication data management on the server with appropriate security measures, the system enables multiple communication paths while maintaining information security through controlled access and encrypted transmission protocols

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS11588799B2Moving object control system, moving object control device, and moving object control method

Publication Date: 2023.02.21 TOYOTA JIDOSHA KK

AI summary

A moving object control system includes a server, a portable terminal configured to transmit authentication information issued by the server, and a controller provided in a moving object and configured to authenticate the portable terminal according to the authentication information transmitted from the portable terminal, and when the portable terminal is authenticated, control the moving object in response to an operation signal from the portable terminal. The controller is configured to perform information communication with the server and control the moving object according to control information received from the server.