Communication Server for Authenticated Multi-User Device Registration

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Solution Overview

Problem

Existing communication systems often prevent multiple users from registering with the same device, leading to inconveniences and potential information leakage.

Innovation Solution

A communication system with a server that manages user registration by associating user information with device identification, allowing the server to transmit authentication information and rejection notifications, and updating registration information based on device authentication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the server prevents multiple users from registering with the same device, then user registration reliability is improved, but user registration flexibility deteriorates

Engineering Contradiction:

Improveuser registration reliabilityVSAvoiduser registration flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The system dynamically changes registration policy based on device authentication state. Initially, only one user can register per device (strict policy), but after authentication, the system allows registration changes (flexible policy). This dynamic adjustment resolves the contradiction by maintaining reliability during initial registration while enabling flexibility when authorized.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The server implements a feedback mechanism where authentication information from the device is processed to determine registration eligibility. The system feeds back authentication status to control whether registration is permitted, allowing multiple users to register only when the device provides valid authentication, thus balancing reliability and flexibility.

Inventive Principle:

Principle #23Feedback

2Loss of information

If the server transmits user information to the second terminal device, then user information accessibility is improved, but information leakage risk increases

Engineering Contradiction:

Improveuser information accessibilityVSAvoidinformation leakage risk

Core Design Contradiction:

Loss of informationVSObject-affected harmful factors

Solution Approach 1:

The server acts as an intermediary that conditions information transmission on authentication verification. It doesn't directly transmit user information to any terminal device without first verifying device authentication, thus mediating between information accessibility and leakage prevention by controlling the transmission based on security criteria.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system performs preliminary authentication verification before allowing any information transmission to terminal devices. This preliminary action prevents unauthorized information leakage by ensuring the device is authenticated first, thereby blocking harmful factors before they can occur.

Inventive Principle:

Principle #9Preliminary anti-action

3Measurement precision

If the server stores authentication information in association with device identification, then registration control accuracy is improved, but system complexity increases

Engineering Contradiction:

Improveregistration control accuracyVSAvoidsystem complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments registration control into distinct functional components: device authentication module, user registration module, and information transmission module. Each module handles specific tasks independently, improving registration control accuracy through specialized processing while managing overall system complexity through modular architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The server performs preliminary storage of authentication information in association with device identification before processing registration requests. This preliminary action establishes a reference database that simplifies subsequent registration control operations, improving accuracy while the structured approach manages complexity.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250310918A1Communication system and server therefor

Publication Date: 2025.10.02 BROTHER KOGYO KK

AI summary

A communication system includes a first terminal device for a first user, a second terminal device for a second user, a particular device, and a server. The server includes a storage device and is communicatively connected to the first terminal device, the second terminal device, and the particular device. A controller in the server receives first user information and device identification information from the first terminal device and registers the first user by storing this information. After registration, the controller receives device identification information from the second terminal device and stores particular authentication information. The controller transmits the authentication information and a rejection notification to the second terminal device. After transmission, the controller receives the authentication information from the particular device and retrieves the first user information associated with it. The retrieved first user information is then notified to a particular notification destination.