Earbud Wearing Error Detection With Automatic Channel Switching

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Solution Overview

Problem

Consumers face difficulties in distinguishing between left and right true wireless stereo earbuds, leading to incorrect wearing and potential adverse audio playback effects.

Innovation Solution

A method and device for detecting earbud wearing errors using motion sensors and communication systems to identify and correct incorrect earbud placement, enabling automatic switching of sound channels or prompting users to switch earbuds.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If motion sensors and automatic detection methods are added to identify earbud wearing errors, then the reliability of audio playback is improved, but the device complexity increases

Engineering Contradiction:
Improveaudio playback qualityVSAvoidsystem complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The earbud system automatically detects wearing errors using motion sensors and self-corrects by switching sound channels without requiring user intervention. The system serves itself by monitoring its own state and making corrections autonomously, which improves reliability while the automation manages the complexity internally.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The system continuously monitors earbud motion and wearing state through sensors, provides feedback about detection results to the control logic, and automatically adjusts sound channel assignment based on this feedback. This closed-loop feedback mechanism ensures reliable audio playback by dynamically correcting wearing errors.

Inventive Principle:
Principle #23Feedback

2Device complexity

If manual switching between left and right earbuds is required, then the device complexity is reduced, but the ease of operation deteriorates

Engineering Contradiction:
Improvesystem complexityVSAvoiduser operation convenience
Core Design Contradiction:
Device complexityVSEase of operation

Solution Approach 1:

Instead of requiring users to manually switch earbuds, the system automatically detects wearing errors and performs the switching operation itself. This self-service approach eliminates the need for user intervention, greatly improving ease of operation while the system manages the complexity of detection and correction internally.

Inventive Principle:
Principle #25Self-service

3Ease of operation

If printing labels 'L' and 'R' on earbuds is used to help users distinguish left and right buds, then the ease of operation is improved, but the device complexity increases due to additional manufacturing steps

Engineering Contradiction:
Improveearbud distinctionVSAvoidmanufacturing process
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The patent replaces the mechanical/manufacturing solution of printing labels with an electronic/software-based solution using motion sensors and algorithmic detection. This substitution eliminates additional manufacturing steps and labeling costs while providing more reliable and dynamic distinction through automatic wearing state detection.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Instead of using static visual labels, the system changes the approach to dynamic parameter detection by monitoring motion patterns, acceleration, and wearing state parameters. This allows the system to distinguish left and right earbuds through their unique motion characteristics during wearing, eliminating the need for physical labels.

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS12513471B2Method for identifying earbud wearing error and related device
Publication Date: 2025.12.30 HUAWEI TECH CO LTD
  • US12513471B2 patent drawing
  • US12513471B2 patent drawing
  • US12513471B2 patent drawing

AI summary

Embodiments of this application provide a method for identifying an earbud wearing error. An earbud wearing action is detected based on a sensor of an earbud (for example, an acceleration sensor, a gyroscope sensor, or a magnetic field detection sensor), and an electronic device may determine, based on the earbud wearing action, whether a left bud and a right bud are incorrectly worn. Once it is determined that the left bud and the right bud are incorrectly worn, the electronic device may output prompt information by using a screen, to prompt a user that the left bud and the right bud are incorrectly worn. When the left bud and the right bud are incorrectly worn, the electronic device may further switch between a left-ear mode and a right-ear mode.