Skin-Adhered Wearable Sound Sensor for Discreet Audio Capture

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Solution Overview

Problem

Conventional wearable devices attached to the body often cause a feeling of strangeness and are noticeable to others, lacking inconspicuous designs that minimize outward changes and psychological impact.

Innovation Solution

A wearable information processing apparatus that adheres directly to the user's skin, featuring a sound pickup sensor, wireless communication, and a flexible housing with adhesion and water-shedding properties, allowing for minimal visibility and seamless integration with the body's surface.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional wearable devices are attached to the body using attachment units that run around the neck, then the device can be securely fixed and provide various functions, but the device becomes noticeable and causes a feeling of strangeness to the user

Engineering Contradiction:
Improvedevice fixationVSAvoidpsychological impact
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies a flexible adhesive housing that directly adheres to the skin surface, replacing traditional rigid attachment units that run around the neck. This thin film approach allows the device to conform to the body surface while remaining inconspicuous, securing the device through adhesion rather than mechanical fastening around the neck

Inventive Principle:
Principle #30Flexible shells and thin films

Solution Approach 2:

The patent transitions from a three-dimensional attachment unit that encircles the neck to a two-dimensional adhesive housing that lies flat against the skin surface. This dimensional reduction makes the device much less noticeable while maintaining secure attachment through direct adhesion to the skin

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Object-affected harmful factors

If the wearable device is made inconspicuous by adhering directly to the skin, then the psychological impact is reduced and user acceptance is enhanced, but the device structure becomes more complex requiring adhesive materials and water-shedding properties

Engineering Contradiction:
Improvepsychological impactVSAvoidhousing structure
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The housing is constructed as a composite structure combining adhesive material for skin attachment and water-shedding material for protection. This composite approach integrates multiple functions (adhesion, water resistance, flexibility) into a single housing unit, managing complexity through material composition rather than mechanical assembly

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent merges the adhesive layer, water-shedding layer, and housing structure into a single integrated housing unit. This consolidation combines multiple protective and functional layers into one component, simplifying the overall device structure while maintaining the required inconspicuous appearance and skin adhesion

Inventive Principle:
Principle #5Merging (Combining)

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 apparatus provides unobtrusive sound sensing and data transmission while maintaining a discreet appearance, reducing psychological impact and enhancing user acceptance.

Implementation Method 1

picks up a sound produced by the user through air conduction, flesh conduction, or bone conduction

Methodology Applied
Scientific EffectSound conduction: Sound

Implementation Method 2

an adhering part that causes the housing part to adhere to a surface of a body of the user

Methodology Applied
Scientific EffectAdhesion: Adhesive

Implementation Method 3

housing part with adhesion and water-shedding properties

Methodology Applied
Scientific EffectHydrophobic effect: Hydrophobe

Data Source

PatentEP3633496B1Information processing device
Publication Date: 2022.07.20 SONY GROUP CORP
  • EP3633496B1 patent drawingFigure 1
  • EP3633496B1 patent drawingFigure 2
  • EP3633496B1 patent drawingFigure 3

AI summary

Provided is an information processing apparatus that is used by being adhered to the body of a user. The information processing apparatus includes a sound pickup sensor that has a sound pickup function, a communicating part that wirelessly transmits audio data picked up by the sound pickup sensor to the outside, a control part that controls the sound pickup sensor and the communicating part, a power source part that supplies a power source to at least one of the sound pickup sensor, the communicating part, or the control part, a housing part that accommodates therein at least one of the sound pickup sensor, the communicating part, the control part, or the power source part, and an adhering part that fixes the housing part to the user. The sound pickup part picks up a sound of the user using, for example, flesh conduction or bone conduction.