Biometric Authentication Device Dynamic Data Update Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Biometric authentication systems face degradation due to fluctuations in biometric conditions over time, leading to decreased authentication rates and usability issues, as existing methods either update registered data inadequately or require excessive storage in large-scale systems.

Innovation Solution

A biometric authentication device and method that generates data for matching, determines the need for updating registered data based on biometric quality differences, and replaces the registered data only when necessary, using a threshold-based approach to manage data storage efficiently and reduce database access.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If registered data is updated continuously to maintain authentication accuracy, then authentication reliability is improved, but data storage requirements and system complexity increase

Engineering Contradiction:

Improveauthentication reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system dynamically adjusts the registered data based on detected biometric quality changes. When quality degradation is detected, the system updates the registered data; when quality is stable, it maintains the original data. This dynamic adaptation resolves the contradiction by updating data only when necessary, improving reliability without continuous updates that would increase complexity.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the parameter of data update frequency based on biometric quality assessment. By monitoring quality parameters and adjusting update behavior accordingly, the system maintains authentication reliability while avoiding unnecessary updates that would increase system complexity and storage requirements.

Inventive Principle:

Principle #35Parameter changes

2Measurement precision

If registered data is updated frequently to account for biometric changes, then authentication accuracy is maintained, but database access frequency and processing time increase

Engineering Contradiction:

Improveauthentication accuracyVSAvoidprocessing time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The system performs preliminary assessment of biometric quality before updating registered data. By evaluating quality parameters in advance and determining whether updates are necessary, the system avoids unnecessary database access and processing, thereby maintaining authentication accuracy while reducing processing time.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses self-assessment mechanisms to evaluate its own performance and determine when updates are needed. This self-service approach allows the system to maintain accuracy by updating only when quality degradation occurs, without requiring continuous external intervention or processing.

Inventive Principle:

Principle #25Self-service

3Adaptability or versatility

If all biometric data is stored for future matching, then adaptability to biometric changes is improved, but storage requirements increase significantly

Engineering Contradiction:

Improveadaptability to biometric changesVSAvoiddata storage requirements

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The system extracts and stores only the essential registered data characteristics rather than all raw biometric data. By taking out only the necessary information for matching and storing that selectively, the system maintains adaptability to biometric changes while significantly reducing storage requirements.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system applies different storage strategies to different data based on their importance and quality. Critical data that reflects current biometric characteristics is stored and updated, while less critical historical data is retained only when necessary. This local quality approach maintains adaptability while minimizing overall storage requirements.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9542543B2Biometric authentication device, biometric authentication method and computer readable, non-transitory medium

Publication Date: 2017.01.10 FUJITSU LTD

AI summary

A biometric authentication device including: a data-for-matching generation portion generating a data for matching from biometric information; an update-demand determine portion determining whether a registered data registered for matching with the data for matching needs updating or not, based on a difference between biometric quality of the registered data and biometric quality of the data for matching; and a registered data replace portion replacing the registered data by a generated data for updating, according to a determination result of the update-demand determine portion.