Smartwatch Bezel Fingerprint Sensor for Multi-Finger Authentication

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Solution Overview

Problem

Smart watches lack effective security measures to protect user personal information, as they do not have a means to control access to this information, necessitating the development of improved security functions and methods for secure operation.

Innovation Solution

A smart watch with a fingerprint sensor integrated into the bezel, capable of recognizing multiple fingerprints simultaneously, and a control device that authenticates users based on the number of recognized fingerprints, providing different levels of confidentiality and allowing varying ranges of information and operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a fingerprint sensor is added to the smart watch to provide security functions, then the security capability is improved, but the device complexity increases

Engineering Contradiction:
Improvesecurity capabilityVSAvoiddevice complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The fingerprint sensor is integrated into the bezel structure of the smart watch, merging the security function with the existing structural elements. This approach avoids adding a separate, complex security module and instead incorporates the sensor into the peripheral bezel area, thereby improving security capability while minimizing the increase in device complexity.

Inventive Principle:
Principle #5Merging (Combining)

2Productivity

If the fingerprint sensor recognizes multiple fingerprints simultaneously, then the authentication efficiency is improved, but the measurement precision requirement increases

Engineering Contradiction:
Improveauthentication efficiencyVSAvoidfingerprint recognition precision
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The bezel is divided into multiple fingerprint recognition regions, allowing the sensor to simultaneously capture and process multiple fingerprints across different segments of the bezel. This segmentation enables parallel authentication processing, improving efficiency while maintaining precision through distributed measurement points.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fingerprint sensor is designed with multi-functional capability to recognize multiple fingerprints simultaneously, serving both authentication and identification functions. This universal design allows the same sensor hardware to handle various authentication scenarios without requiring additional specialized components, thereby improving efficiency while managing precision requirements through software-based verification.

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

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 provides enhanced security functions by efficiently utilizing the smart watch's structure to safely and conveniently manage user authentication, ensuring secure access to personal information and operations.

Implementation Method 1

the fingerprint sensor may be configured to check whether an object in contact with the fingerprint sensor is a human finger by comparing a constant voltage change, which occurs when a user's finger is contacted, with a predetermined pattern

Methodology Applied
Scientific EffectVoltage change detection: Electrical Resistance

Data Source

PatentUS10706133B2Smart watch and method for controlling same
Publication Date: 2020.07.07 LG ELECTRONICS INC
  • US10706133B2 patent drawing
  • US10706133B2 patent drawing
  • US10706133B2 patent drawing

AI summary

Disclosed are a smart watch comprising a fingerprint sensor for user authentication, and a method for controlling the same. The present invention provides a smart watch and a method for controlling the same, the smart watch comprising: a case; a display unit which is positioned on the case and is configured to display the current time and a variety of information; a bezel which is provided on the case and is configured to surround the display unit; a fingerprint sensor which is provided on the bezel and is configured to simultaneously recognize a plurality of fingerprints which are different from each other; and a control device which is configured to control the operation on the basis of the fingerprints recognized by the fingerprint sensor.