Notification Apparatus Restricting Routing Information to Registered Networks

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Solution Overview

Problem

When an electronic apparatus moves and changes networks, it can lead to network topology changes, causing connected routing control apparatuses to advertise incorrect routing control information, potentially disrupting Internet connections on the new network or home network.

Innovation Solution

A notification apparatus with a restriction unit that prevents the advertisement of routing information when the connected network is not registered or when communication with the second network is impossible, ensuring accurate routing control information is provided only to registered networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If routing control information is advertised on a network when topology changes occur, then network adaptability is improved, but network reliability deteriorates due to propagation of incorrect routing information

Engineering Contradiction:
Improvenetwork adaptabilityVSAvoidnetwork reliability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary action by registering network identification information before routing control information is advertised. The notification apparatus stores registered network identifiers in advance, and only advertises routing information on networks whose identifiers match the registered ones. This pre-registration mechanism prevents incorrect routing information propagation while maintaining network adaptability.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent implements feedback by comparing the identification information of the connected network against pre-registered network identifiers before allowing routing information advertisement. This feedback mechanism ensures that routing control information is only propagated to authorized networks, preventing reliability issues while maintaining adaptability to legitimate network changes.

Inventive Principle:
Principle #23Feedback

2Ease of operation

If routing information is shared across all connected networks, then ease of operation is improved, but security deteriorates due to unauthorized access risks

Engineering Contradiction:
Improveease of operationVSAvoidunauthorized access
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent applies preliminary action by pre-registering authorized network identifiers before routing information sharing occurs. This creates an access control list in advance, allowing the system to automatically authorize or deny routing information propagation based on network identity, thus maintaining ease of operation while preventing unauthorized access.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The patent introduces an intermediary mechanism by using registered network identifiers as a mediator between the routing control apparatus and connected networks. This intermediary layer verifies network authorization before allowing routing information exchange, preventing unauthorized access while maintaining operational simplicity for authorized networks.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS8751625B2Notification apparatus and notification method
Publication Date: 2014.06.10 CANON KK
  • US8751625B2 patent drawing
  • US8751625B2 patent drawing
  • US8751625B2 patent drawing

AI summary

A notification apparatus includes a notification unit configured to notify a connected network of routing information, and a restriction unit configured to restrict notification of the routing information when a connected network is not a registered network.