Shielded Electronic Key Housing with Dynamic Signal Control

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Solution Overview

Problem

The existing systems for securing electronic keys installed in vehicle interiors lack sufficient security measures, allowing unauthorized access and use of vehicles.

Innovation Solution

A housing device with a shielding material, a trigger signal reception antenna, and a control mechanism that selectively allows or blocks wireless communication signals to enhance security by preventing unauthorized access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the housing uses shielding material to block signals, then security is improved, but legitimate users cannot access the electronic key

Engineering Contradiction:
ImprovesecurityVSAvoidaccessibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The housing structure is made dynamic through the opening/closing mechanism that allows the housing to switch between a closed state (blocking signals for security) and an open state (allowing signal transmission for access). This dynamic transformation resolves the contradiction by enabling both security and accessibility at different times based on user needs.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control mechanism acts as an intermediary that receives authentication information and decides whether to open or close the housing. This mediator resolves the contradiction by intelligently controlling the housing state based on whether the user is authenticated, allowing access only to legitimate users while maintaining security against unauthorized access.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the housing is always open to allow access, then ease of operation is improved, but security is compromised

Engineering Contradiction:
ImproveaccessibilityVSAvoidsecurity
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The housing transitions from a static always-open state to a dynamic state that opens only when needed and closes otherwise. This dynamic behavior resolves the contradiction by providing accessibility on demand while maintaining security when the housing is closed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The housing is designed to be closed by default (preliminary state) that prevents unauthorized access, and only opens after authentication. This preliminary anti-action resolves the contradiction by proactively blocking access before any attempt is made, then allowing access only after verification.

Inventive Principle:
Principle #9Preliminary anti-action

3Reliability

If authentication is required before opening, then security is improved, but operation time is increased

Engineering Contradiction:
ImprovesecurityVSAvoidoperation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

Authentication is performed in advance before the housing is opened. This preliminary action resolves the contradiction by completing the security verification before the access operation begins, so that once authenticated, the housing can be opened immediately without additional delays.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The manual authentication process is replaced with wireless communication between the portable device and the in-vehicle device. This substitution resolves the contradiction by enabling rapid, contactless authentication that significantly reduces the time required compared to traditional manual verification methods.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The solution effectively improves the security of electronic keys by preventing unrightful use and allowing legitimate users to access and control vehicle systems securely.

Implementation Method 1

a housing formed by using a material that shields a first signal transmitted by the in-vehicle device

Methodology Applied
Scientific EffectElectromagnetic shielding: Faraday Cage

Implementation Method 2

a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user

Methodology Applied
Scientific EffectElectromagnetic wave reception: Electromagnetic Induction

Data Source

PatentUS11661901B2Housing device and system
Publication Date: 2023.05.30 KK TOKAI RIKA DENKI SEISAKUSHO
  • US11661901B2 patent drawing
  • US11661901B2 patent drawing
  • US11661901B2 patent drawing

AI summary

To provide a mechanism that can further improve security of an electronic key installed in a vehicle interior.There is provided a housing device configured to store an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle, the housing device comprising: a housing formed by using a material that shields a first signal transmitted by the in-vehicle device; a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user; and a control mechanism configured to control whether or not to enable the first signal to reach an inside of the housing based on the trigger signal, wherein the second signal transmitted by the electronic key that has received the first signal is used to control a control target device installed in the vehicle.