Wireless Earphone Drop Detection With LED Loss Recovery

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Solution Overview

Problem

The issue of completely wireless earphones frequently slipping out of the ear and being difficult to locate once lost, leading to time-consuming warranty claims.

Innovation Solution

Earphones equipped with a light emission unit that activates upon detection of a drop, with synchronized light emission between paired earphones to facilitate easy retrieval.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If completely wireless earphones are made small and compact, then portability and comfort are improved, but the earphones become difficult to locate when lost

Engineering Contradiction:

Improveearphone sizeVSAvoidlocatability

Core Design Contradiction:

Volume of moving objectVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies light emission from LEDs to change the visual state of the earphone from invisible to highly visible. When the earphone is dropped or lost, the light emission unit activates to emit light, making the small earphone easily locatable without increasing its physical size.

Inventive Principle:

Principle #32Color changes

2Reliability

If traditional loss warranty service procedures are used, then lost earphones can be covered, but much time and effort are required

Engineering Contradiction:

Improvewarranty coverageVSAvoidtime and effort for warranty claim

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent implements preliminary action by equipping earphones with drop detection and light emission capabilities before loss occurs. When an earphone is dropped, it automatically emits light and can be located immediately, eliminating the need for time-consuming warranty procedures. The system prevents loss rather than providing post-loss remediation.

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If earphones are made completely wireless without physical connections, then convenience is improved, but the risk of slipping out and being lost increases

Engineering Contradiction:

Improvewireless convenienceVSAvoidretention in ear

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent applies feedback by using acceleration sensors to detect when an earphone has been dropped or dislodged. Upon detection, the system provides immediate feedback through light emission, alerting the user to locate the lost earphone quickly, thereby maintaining wireless convenience while compensating for the increased risk of loss.

Inventive Principle:

Principle #23Feedback

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

Enhances the ability to quickly locate misplaced earphones by illuminating them, reducing the likelihood of loss and simplifying the warranty process.

Implementation Method 1

a detection unit configured to detect that the earphone has been dropped

Methodology Applied

Scientific EffectAcceleration detection: Accelerometer

Implementation Method 2

a light emission unit configured to emit light

Methodology Applied

Scientific EffectLight emission: Light Emitting Diode

Data Source

PatentUS12598437B2Earphones and earphone system

Publication Date: 2026.04.07 JVC KENWOOD CORP

AI summary

To provide earphones and an earphone system each adapted to prevent loss of the earphones. An earphone according to an embodiment of the present disclosure includes a light emission unit a detection unit and a light emission control unit. The light emission unit is configured to emit light. The detection unit is configured to detect that the earphone has been dropped. The light emission control unit is configured to control the light emission unit so that it emits light when the detection unit detects that the earphone has been dropped.