Bluetooth Earphone Master Selection via Pull Detection

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Solution Overview

Problem

Bluetooth headsets face issues with user confusion when distinguishing between master and slave earphones, leading to incorrect pairing and degraded user experience during phone calls or video conferencing due to the similarity in design, causing anxious users to mistakenly activate the wrong earphone.

Innovation Solution

A control method and device that automatically determine the master earphone by detecting which earphone is first pulled out and activated, establishing a wireless connection based on a predefined rule, allowing the user to connect directly with the target device without needing to identify the master or slave earphone.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the Bluetooth headset uses master/slave pairing for connection, then the connection can be established, but the user cannot easily distinguish between master and slave earphones, leading to incorrect activation

Engineering Contradiction:
Improveconnection accuracyVSAvoidearphone identification
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies asymmetry by making the master earphone visually distinct from the slave earphone through different lighting patterns or indicator behaviors. The master earphone displays a specific light pattern (e.g., continuous or pulsing light) to indicate its status, while the slave earphone shows a different pattern, enabling users to easily distinguish between them and activate the correct one.

Inventive Principle:
Principle #4Asymmetry

2Reliability

If the user needs to identify the master earphone to connect, then correct pairing can be achieved, but the connection process becomes time-consuming and degrades user experience

Engineering Contradiction:
Improvepairing accuracyVSAvoidconnection time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The patent applies preliminary action by pre-configuring the master earphone with unique identification characteristics (such as specific LED lighting patterns or audio signals) before the connection process. This allows the user to immediately identify the master earphone without needing to perform additional actions or wait for complex pairing sequences, thereby reducing connection time while maintaining pairing accuracy.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the Bluetooth headset requires manual identification and selection of master earphone, then connection can be established, but user anxiety and operational errors increase

Engineering Contradiction:
Improveconnection successVSAvoidoperational simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent applies color changes by using different LED light colors or patterns to indicate the master earphone status. For example, the master earphone may display a green light or a specific pulsing pattern, while the slave earphone shows a different color or pattern. This visual feedback mechanism simplifies the operation by making the master earphone immediately identifiable, reducing user anxiety and operational errors.

Inventive Principle:
Principle #32Color changes

Data Source

PatentUS20210200280A1Control method, data processing device and expansion device
Publication Date: 2021.07.01 LENOVO (BEIJING) LTD
  • US20210200280A1 patent drawing
  • US20210200280A1 patent drawing
  • US20210200280A1 patent drawing

AI summary

A control method includes making, by a first interaction component, a wireless connection according to a connection rule in response to the first interaction component switching from a first state to a second state; and making, by a second interaction component, the wireless connection according to the connection rule in response to the second interaction component switching from the first state to the second state.