Hearing Aid Wireless Link Frequency Selection
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Solution Overview
Problem
Current hearing prostheses face challenges in efficient wireless communication between devices, leading to limitations in ease of use, energy consumption, and operational range, particularly in bidirectional communication and power management.
Innovation Solution
The implementation of a wireless communication protocol using a behind-the-ear device that selects a frequency channel from a predefined series for bidirectional communication, employing magnetic induction and RF links for power transfer and data transmission, with burst transmission techniques to reduce energy consumption and extend operational range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous wireless communication is maintained between devices, then data transmission reliability is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic communication cycles where devices alternate between active transmission phases and sleep phases. During each cycle, devices wake up at predetermined intervals to exchange data or commands, then return to low-power state. This periodic operation maintains communication reliability by ensuring regular data exchange while dramatically reducing average energy consumption compared to continuous communication.
Solution Approach 2:
The system employs automatic connection management where devices autonomously establish and maintain communication links without continuous external control. Devices automatically detect each other's presence, initiate connections when needed, and manage their own power states based on communication requirements, reducing the need for high-power active monitoring while maintaining reliable operation.
2Loss of energy
If magnetic induction is used for power transfer, then power transmission efficiency is improved, but operational range is limited
Solution Approach 1:
The patent introduces RF wireless communication as an intermediary layer between the power source and the implantable device. Instead of relying solely on magnetic induction for both power and data, the system uses RF signals for data communication and control, while magnetic induction handles power transfer only when devices are in close proximity. This intermediary approach allows the system to maintain efficient power transfer over short distances while extending operational range through RF communication capabilities.
3Adaptability or versatility
If bidirectional communication is implemented, then system control flexibility is improved, but device complexity increases
Solution Approach 1:
The patent segments communication functions into distinct modules: a control channel for commands and configuration, a data channel for audio and telemetry, and a power management channel. Each channel operates independently with dedicated protocols, allowing bidirectional communication capabilities to be implemented through modular components rather than a monolithic complex system. This segmentation reduces overall device complexity while maintaining flexible bidirectional control.
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
This solution enhances the efficiency of wireless communication, reduces energy consumption, and allows for extended operational range, improving user convenience and system performance by optimizing data transmission and power management in hearing prostheses.
Implementation Method 1
employing magnetic induction and RF links for power transfer and data transmission
Implementation Method 2
the remote unit may be provided with a RF signal transmitter and/or receiver and with a RF antenna
Data Source
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AI summary
A method of wireless communication between hearing aid devices of a hearing prosthesis. A first device selects a frequency channel for bidirectional wireless communication from a predefined series of frequency channels. A second device transmits a command signal repeatedly over the series of frequency channels until it transmits the command signal over the frequency channel selected by the first device. Subsequent commands send by the second device to the first device are initially transmitted over the selected frequency channel.