Base Module Electrical Switching State for Secure Password Reset

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Solution Overview

Problem

Existing base modules for electronic devices lack robust access protection, as access passwords can be unintentionally or unauthorizedly changed if lost, leading to security vulnerabilities and the need for physical return to the manufacturer for reset, and require separate setting knobs for manual configuration.

Innovation Solution

A base module with a program that requires a specific electrical switching state to change settings, including a separate electrical connection to the application module, ensuring that changes, such as access password modifications, can only be made directly on-site and not via the network, thereby preventing unauthorized access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If an access password is used to protect the base module settings, then security against unauthorized changes is improved, but if the password is lost, access to the program and settings is completely blocked requiring return to manufacturer

Engineering Contradiction:
Improvesecurity protectionVSAvoidaccess to settings
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent segments the electrical connections into two distinct states: a first electrical connection state allowing network access for normal operation, and a second electrical connection state (physical disconnect) that enables local setting changes. This segmentation allows the system to provide both security through password protection and recovery capability through physical access, resolving the contradiction between security and ease of operation.

Inventive Principle:
Principle #1Segmentation

2Ease of operation

If a master password is used to reset access passwords, then password recovery is improved, but security is worsened because the master password can be unauthorizedly changed over the network

Engineering Contradiction:
Improvepassword recoveryVSAvoidsecurity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent extracts the password recovery function from the networked electronic environment and places it in a physically isolated state. By requiring physical disconnection of the electrical connection to access setting changes, the system removes the vulnerability to network-based unauthorized access while maintaining password recovery capability through local physical access.

Inventive Principle:
Principle #2Taking out (Extraction)

3Ease of operation

If access passwords can be changed via the network, then ease of operation is improved, but security is worsened due to risk of unintentional or unauthorized changes

Engineering Contradiction:
Improveremote configurationVSAvoidprotection against unauthorized changes
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent implements preliminary anti-action by requiring a specific second electrical connection state (physical disconnection) before allowing access password changes. This preliminary condition prevents unauthorized or unintentional changes during normal networked operation, as the physical disconnection requirement acts as a deliberate action that cannot be performed remotely or accidentally during system operation.

Inventive Principle:
Principle #9Preliminary anti-action

Data Source

PatentEP3005643B1Base module for an electronic device
Publication Date: 2017.07.19 WEIDMULLER INTERFACE GMBH & CO
  • EP3005643B1 patent drawingFigure 1
  • EP3005643B1 patent drawingFigure 2

AI summary

The invention relates to a base module (4) for an electronic device (6) for connecting an application module (8) in the electronic device (6) to a network (2), comprising a program which is stored in a memory unit (20) and which defines a functionality of the electronic device (6) and comprising a modification device (26) for modifying settings on the program stored in the memory unit (20) on the basis of a user input (22). A specified electric switch state (25) for the base module (4) is required in order to modify at least some of the settings.