Display Interface Infrared User Authorization

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Solution Overview

Problem

Existing methods for user authorization in multimedia devices require additional hardware, such as fingerprint sensors, which can be cumbersome and increase device complexity.

Innovation Solution

Integration of pyroelectric or piezoelectric materials, like Polyvinylidene Fluoride (PVDF), within the display interface to convert infrared signals from user interactions into electrical signals for authorization analysis, eliminating the need for separate hardware.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate fingerprint sensors are used for user authorization, then authorization security is improved, but device complexity increases

Engineering Contradiction:

Improveauthorization securityVSAvoiddevice complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the authorization sensing function with the existing display interface by integrating pyroelectric or piezoelectric materials directly into the display structure. This merging eliminates the need for separate fingerprint sensors while maintaining authorization security, as the display interface itself becomes capable of detecting biometric parameters through thermal or mechanical sensing.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The display interface is designed to serve multiple functions: visual display, tactile interaction, and biometric authorization sensing. By making the display interface universal, the patent eliminates dedicated authorization hardware while preserving security functionality. The same display structure detects both user interaction and biometric parameters simultaneously.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If additional authorization hardware is integrated, then authorization capability is improved, but ease of manufacture deteriorates

Engineering Contradiction:

Improveauthorization capabilityVSAvoidease of manufacture

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The authorization sensing capability is merged into the existing display interface manufacturing process. Pyroelectric or piezoelectric materials are integrated directly into the display structure during standard manufacturing, eliminating the need for separate assembly steps for authorization hardware. This reduces manufacturing complexity while maintaining full authorization capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The display interface is designed as a universal component that performs both display and authorization functions through a single manufacturing process. This multi-functionality approach allows standard display manufacturing techniques to produce components with built-in sensing capabilities, significantly improving ease of manufacture compared to assembling separate authorization modules.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Device complexity

If pyroelectric or piezoelectric materials are integrated in the display interface, then hardware requirements are reduced, but manufacturing precision requirements increase

Engineering Contradiction:

Improvehardware requirementsVSAvoidmanufacturing precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent employs thin film pyroelectric or piezoelectric materials that can be deposited as conformal layers on the display interface substrate. These thin films are flexible and can conform to the display surface geometry, reducing the need for complex precision machining or alignment procedures. The thin film nature allows for lower manufacturing precision requirements while maintaining sensing effectiveness.

Inventive Principle:

Principle #30Flexible shells and thin films

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

This approach enables secure user authorization without additional hardware, allowing for seamless integration with existing devices and enhanced security through biometric analysis during visual and tactile interactions.

Implementation Method 1

using pyroelectric, or piezoelectric and pyroelectric, based material for the step of converting the infrared input signal into the electric signal

Methodology Applied

Scientific EffectPyroelectric effect: Pyroelectric Effect

Implementation Method 2

using pyroelectric, or piezoelectric and pyroelectric, based material for the step of converting the infrared input signal into the electric signal

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 3

The infrared signal may be, for example, black body radiation (e.g., electromagnetic or heat radiation) radiated from a user

Methodology Applied

Scientific EffectBlack body radiation: Thermal Radiation

Data Source

PatentUS10628565B2Method and device

Publication Date: 2020.04.21 SONY GROUP CORP

AI summary

A method and device for user authorization is presented herein. The authorization device may be integrated in a display interface configured to receive an infrared input signal. The device may include a means for converting the infrared signal into an electric signal. The device may further include a processor configured to analyze the electrical signal. The processor may further be configured to provide an authorization of a user based on the analysis of the electrical signal.