Biometric Authentication Device Sensor Type Conversion

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Solution Overview

Problem

In biometric authentication systems, users face difficulties when switching from one terminal to another with incompatible biometric sensors, requiring re-registration and administrative intervention, which increases the number of processes and costs.

Innovation Solution

A biometric authentication method that receives user identification and sensor type information, confirms compatibility, and controls the issuance of a password for re-registration based on predetermined relationships, reducing the need for administrative intervention.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a user switches to a terminal with an incompatible biometric sensor, then the user cannot perform biometric authentication with previously registered data, but requiring re-registration increases the number of processes and administrative burden

Engineering Contradiction:

Improvecompatibility between biometric sensorsVSAvoidnumber of processes for re-registration

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent transforms biometric data by applying conversion parameters that match the characteristics of different sensor types. When a user attempts authentication with a new sensor type, the system determines the sensor type and applies appropriate conversion parameters to transform the registered biometric data, enabling compatibility without re-registration.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces a conversion function as an intermediary component between the biometric authentication device and the authentication server. This conversion function acts as a mediator that transforms biometric data from one sensor type to another, allowing users to authenticate across different terminal types without direct re-registration.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Extent of automation

If a conversion function is included in the authentication server, then biometric data can be converted to match registered data requirements, but the conversion function is not applicable when sensor types are fundamentally incompatible

Engineering Contradiction:

Improveautomatic biometric data conversionVSAvoidapplicability across different sensor types

Core Design Contradiction:

Extent of automationVSAdaptability or versatility

Solution Approach 1:

The patent pre-registers multiple sensor type information and corresponding conversion parameters in the biometric authentication device. When a user attempts authentication, the device proactively determines the sensor type and selects the appropriate pre-prepared conversion parameters, enabling automatic conversion without requiring the authentication server to handle all conversion scenarios.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent divides the conversion process into discrete segments based on sensor type categories. Each sensor type has its own conversion parameters and conversion function, allowing the system to handle different sensor types independently and systematically rather than requiring a universal conversion approach.

Inventive Principle:

Principle #1Segmentation

3Reliability

If re-registration is required when sensor types are incompatible, then authentication can be restored, but users must contact system administrators which increases time and effort

Engineering Contradiction:

Improveauthentication functionalityVSAvoidtime for administrative intervention

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent enables users to perform self-service authentication by automatically determining sensor type and applying appropriate conversion parameters. The biometric authentication device autonomously handles the conversion process without requiring users to contact system administrators, significantly reducing the time and effort needed to restore authentication functionality.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent implements a feedback mechanism where the biometric authentication device receives sensor type information from the terminal, determines the appropriate conversion parameters, and applies them automatically. This closed-loop feedback system enables the device to adapt to different sensor types autonomously and restore authentication functionality without external intervention.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS11379569B2Biometric authentication device, biometric authentication method, and program

Publication Date: 2022.07.05 FUJITSU LTD

AI summary

A biometric authentication method causes a processor of a biometric authentication device to execute a process. The process may include: receiving user identification information and sensor type information from a terminal; confirming whether or not the received sensor type information has a predetermined relationship with a registered sensor type information corresponding to the received user identification that is among sensor type information of biometric sensors that have acquired biometric data registered for respective user identification information; and controlling, based on the confirmed sensor type information having the predetermined relationship, the issuance of a password to be used to re-register biometric data.