Dynamic Hearing Aid Master-Slave Role Switching

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Solution Overview

Problem

Current hearing aid systems face issues when the master device is not functioning properly or communication between the master and slave devices is interrupted, leading to potential disconnection and instability in the network connection.

Innovation Solution

A dynamic hearing aid system configuration where one of the hearing devices can dynamically switch roles from slave to master if the master device is absent, with the controller monitoring the connection and adjusting the communication protocol to ensure continuous operation, including regular data transmission to maintain synchronization and prevent clock drift.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a master-slave configuration is used for hearing aid devices, then the system can be organized with clear timing control and coordination, but the system becomes vulnerable to disconnection and instability when the master device fails or communication is interrupted

Engineering Contradiction:
Improvenetwork connection stabilityVSAvoidmaster-slave configuration management
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic role assignment where hearing aid devices can switch between master and slave roles based on real-time connection status. The slave device monitors master device health and can transition to master role if the master fails, creating a flexible system that adapts to changing conditions rather than being fixed in a static master-slave hierarchy.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system employs self-organized systemization where devices automatically detect and respond to master device failures without external intervention. The slave device autonomously monitors communication quality, detects failures, and initiates role transitions, enabling the system to self-heal and maintain operation without user involvement.

Inventive Principle:
Principle #25Self-service

2Reliability

If the master device continuously transmits synchronization data to maintain network stability, then communication reliability improves, but power consumption increases

Engineering Contradiction:
Improvecommunication reliabilityVSAvoidpower consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic transmission of synchronization data at optimized intervals rather than continuous transmission. The master device transmits synchronization information at regular periods that maintain network coherence while allowing power-saving modes during intervals, balancing reliability requirements with energy conservation.

Inventive Principle:
Principle #19Periodic action

Solution Approach 2:

The system uses feedback mechanisms where slave devices monitor synchronization quality and provide status information to the master. Based on this feedback, the master device can adjust transmission frequency and power levels dynamically, transmitting more frequently when connection quality degrades and reducing transmission when conditions are stable, thereby optimizing the balance between reliability and power consumption.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP2885925B1A dynamic hearing aid system and a method for configuring the hearing aid system
Publication Date: 2019.04.10 SIVANTOS PTE LTD
  • EP2885925B1 patent drawingFigure 1~2
  • EP2885925B1 patent drawingFigure 3

AI summary

A dynamic hearing aid system and a method for configuring the hearing aid system. The dynamic hearing aid system (10) is presented. The dynamic hearing aid system (10) includes a first hearing device (14) and a second hearing device (16), and a controller (18) adapted to communicate with each other wherein the hearing devices (14, 16) and the controller (18) form a master-slave configuration, wherein one of the hearing devices (14, 16) is the master hearing device (14) in the master-slave configuration and the other hearing device is the slave hearing device (16).