Earphone Pressure Transducer Repositioning Detection

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Solution Overview

Problem

Existing earphones lack a reliable method to detect repositioning, leading to inconsistent operation modes in connected devices, such as pausing music or switching between phone modes, without user intervention.

Innovation Solution

Incorporating a pressure transducer within the earphone that detects pressure changes and sends a signal to a signaling mechanism, which communicates with the host device to change operation modes based on the earphone's position, using either wired or wireless connections.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Extent of automation

If a pressure transducer is added to detect earphone repositioning, then automatic operation mode adjustment is enabled, but device complexity increases

Engineering Contradiction:

Improveautomatic operation mode adjustmentVSAvoiddevice complexity

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The pressure transducer serves multiple functions: it detects both the presence of the earphone in the ear and the act of removal/repositioning. This multi-functionality reduces the need for separate detection mechanisms, thereby limiting the increase in device complexity while enabling automatic operation mode adjustment.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The earphone assembly performs self-detection of its own position and removal status using the integrated pressure transducer, without requiring external detection systems. This self-service capability enables automatic operation mode adjustment while minimizing additional complexity by using the earphone's own structural changes as the detection mechanism.

Inventive Principle:

Principle #25Self-service

2Reliability

If pressure changes are used to detect earphone removal, then reliable detection is achieved, but measurement precision requirements increase

Engineering Contradiction:

Improvereliable detectionVSAvoidmeasurement precision

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The system detects earphone removal by monitoring changes in pressure parameters rather than requiring precise measurement of position or force. The pressure transducer detects the pressure differential between when the earphone is in the ear and when it is removed, providing reliable detection with moderate measurement precision requirements.

Inventive Principle:

Principle #35Parameter changes

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 automatic adjustment of operation modes in connected devices, such as pausing music or switching to speakerphone mode, based on the earphone's position, providing a seamless user experience.

Implementation Method 1

a pressure transducer that detects a pressure change caused by the repositioning of the earphone against the user's ear

Methodology Applied

Scientific EffectPressure change detection:

Data Source

PatentUS8098838B2Detecting the repositioning of an earphone using a microphone and associated action

Publication Date: 2012.01.17 APPLE INC

AI summary

A system detects the repositioning of an earphone that is worn by a user, and changes an operation mode of a host coupled to the earphone. Within the earphone is a pressure transducer that detects a pressure change caused by the repositioning of the earphone. A signaling mechanism sends a repositioning detection signal to the host in response to a signal from the pressure transducer indicating the detection of the pressure change.