Earphone Otoacoustic Authentication With Motion-Based Security

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Solution Overview

Problem

Existing technologies only provide content based on user movement or body orientation, lacking comprehensive authentication methods.

Innovation Solution

An authentication management device that utilizes otoacoustic authentication and motion sensing to estimate user motion and authenticate users in connected devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If otoacoustic authentication alone is used, then authentication speed is improved, but authentication security deteriorates

Engineering Contradiction:
Improveauthentication speedVSAvoidauthentication security
Core Design Contradiction:
Loss of timeVSReliability

Solution Approach 1:

The patent combines otoacoustic authentication with motion recognition authentication to create a multi-factor authentication system. The authentication result is determined by both the otoacoustic authentication result and the motion recognition authentication result, thereby improving security while maintaining speed through parallel processing of both authentication methods.

Inventive Principle:
Principle #5Merging (Combining)

2Reliability

If multiple authentication methods are combined, then authentication security is improved, but device complexity deteriorates

Engineering Contradiction:
Improveauthentication securityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The earphone device performs multiple functions including otoacoustic authentication, motion sensing, and motion recognition. These diverse functions are integrated into a single authentication system that determines authentication results by combining results from both authentication methods, reducing the need for separate dedicated devices.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses the earphone device itself to perform both otoacoustic authentication and motion recognition authentication, eliminating the need for external authentication devices. The earphone leverages its own sensors and processing capabilities to conduct both authentication types internally.

Inventive Principle:
Principle #25Self-service

3Measurement precision

If motion recognition authentication is added, then authentication accuracy is improved, but processing time deteriorates

Engineering Contradiction:
Improveauthentication accuracyVSAvoidprocessing time
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The system performs motion recognition authentication in parallel with otoacoustic authentication rather than sequentially. The authentication result determination unit simultaneously processes both authentication results to determine the final authentication outcome, thereby improving accuracy without significantly increasing total processing time.

Inventive Principle:
Principle #10Preliminary action

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

Enables secure and accurate user authentication in connected devices by combining otoacoustic authentication with motion information, enhancing security and simplifying user access control.

Implementation Method 1

an authentication unit that performs authentication of a user by otoacoustic authentication

Methodology Applied
Scientific EffectOtoacoustic authentication: Echo

Data Source

PatentUS12488076B2Authentication device, authentication method, and recording medium using otoacoustic authenication
Publication Date: 2025.12.02 NEC CORP
  • US12488076B2 patent drawing
  • US12488076B2 patent drawing
  • US12488076B2 patent drawing

AI summary

An authentication management device acquires first position information indicating a change in the position of a user's earphone equipped with a first authentication means based on otoacoustic authentication; on the basis of the acquired first position information, estimates motion of the user wearing the earphone by generating motion information indicating the motion of the user; and executes authentication of the user in a device connected to the earphone on the basis of the result of the authentication by otoacoustic authentication and the motion information.