Interrupt-Based Pairing for Wireless Audio Devices

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

True wireless stereo (TWS) earbuds face challenges in pairing without activating buttons or switches, particularly due to their small size and difficulty in reliable button activation, and the risk of one earbud being lost.

Innovation Solution

Incorporating a Hall sensor and acceleration sensor in each earbud to detect colocation and initiate pairing through magnetic field detection and tap recognition, enabling interrupt-based pairing without the need for buttons or switches.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If buttons and switches are used for pairing, then pairing function can be implemented, but reliability of activation is poor due to small device size

Engineering Contradiction:

Improvepairing operationVSAvoidbutton activation reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent replaces mechanical buttons and switches with sensor-based detection systems (accelerometers, gyroscopes, microphones) to detect user gestures such as tapping, shaking, or proximity placement. This substitution eliminates the reliability issues associated with small mechanical components while maintaining ease of pairing operation through intuitive gestures.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces sensors as intermediary devices that detect physical gestures or proximity events and translate them into pairing commands. Instead of direct button presses, the sensors act as mediators between user intent and the pairing function, improving reliability by detecting gestures that are easier to perform reliably on small devices.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Volume of moving object

If device size is reduced for TWS earbuds, then portability is improved, but button activation becomes difficult and unreliable

Engineering Contradiction:

Improveearbud sizeVSAvoidbutton activation

Core Design Contradiction:

Volume of moving objectVSEase of operation

Solution Approach 1:

The patent replaces mechanical buttons with gesture-based sensor detection, allowing users to interact with the small earbuds through tapping, shaking, or proximity gestures that are feasible at reduced device sizes. This maintains ease of operation despite the smaller form factor.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The sensors serve multiple functions including pairing initiation, music control, and call management, allowing the small earbuds to maintain full functionality without requiring dedicated physical buttons for each operation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If manual button presses are required for pairing, then pairing can be initiated, but user-friendliness decreases and pairing time increases

Engineering Contradiction:

Improvepairing connectionVSAvoidpairing time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The sensors continuously monitor for pairing gestures in real-time, allowing pairing to be initiated immediately when the user performs the gesture, rather than requiring the user to manually activate a button and wait for pairing mode. This reduces pairing time while maintaining connection reliability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The earbuds automatically detect pairing gestures and initiate pairing without requiring user knowledge of specific button sequences or pairing modes. The device serves itself by interpreting gestures and automatically starting the pairing process, reducing both time and complexity.

Inventive Principle:

Principle #25Self-service

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 reliable and user-friendly pairing of TWS earbuds by detecting proximity and tap events, allowing for secure wireless connections without the need for manual button presses, even when one earbud is lost or misplaced.

Implementation Method 1

A colocation of the wireless audio device with a subsequent wireless audio device is determined in response to a signal from the Hall sensor

Methodology Applied

Scientific EffectMagnetic field detection: Hall Effect

Implementation Method 2

A colocation of the wireless audio device with a subsequent wireless audio device is determined in response to the signal from the acceleration sensor

Methodology Applied

Scientific EffectAcceleration detection: Accelerometer

Data Source

PatentUS11962985B2Interrupt based pairing for wireless audio devices

Publication Date: 2024.04.16 HEWLETT PACKARD DEVELOPMENT COMPANY LP

AI summary

A method for interrupt based pairing for wireless audio devices includes determining a colocation of a wireless audio device with a subsequent wireless audio device with one or more sensors. An interrupt is generated in response to determining the colocation. A pairing mode of the wireless audio device is enabled in response to the interrupt. The wireless audio device is paired with the subsequent wireless audio device.