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Resonance frequency shift canceling in wireless hearing aids

A technology of frequency offset and resonant frequency, applied in the field of communication system, can solve the problem of resonant frequency offset deterioration of transmitter and receiver range and so on

Inactive Publication Date: 2007-01-31
STARKEY LAB INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Resonant frequency shifts degrade range between transmitter and receiver due to reduced power transfer associated with frequency mismatch between transmitting and receiving devices

Method used

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  • Resonance frequency shift canceling in wireless hearing aids
  • Resonance frequency shift canceling in wireless hearing aids
  • Resonance frequency shift canceling in wireless hearing aids

Examples

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Embodiment Construction

[0028] The following detailed description of the invention refers to the accompanying drawings, which show, by way of illustration, specific aspects and embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. Other embodiments may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the present invention. References to "one" or "various" embodiments in this discussion are not necessarily to the same embodiment, and such references contemplate more than one embodiment. Accordingly, the following detailed description is not to be limiting, and the scope of the invention is to be defined only by the appended claims, along with the full scope of legal equivalents to which such claims are entitled.

[0029] figure 1 A hearing aid according to various embodiments of the invention is shown. The illustrated hearing ai...

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PUM

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Abstract

Systems, devices and methods are provided to switch between transmit and receive modes in wireless hearing aids. Various aspects of the present subject matter relate to a communication system. Various embodiments of the communication system include an antenna with a resonant circuit having an inductive coil connected to a tuning capacitor. The communication system includes means to selectively drive the resonant circuit during a transmit mode, and means to selectively receive an induced signal in the resonant circuit during a receive mode. The communication system further includes means to selectively include a frequency shift canceling component in the resonant circuit to provide a first resonance frequency in the resonant circuit in the transmit mode and a second resonance frequency in the resonant circuit in the receive mode such that the first resonance frequency and the second resonance frequency are approximately equal. Other aspects are provided herein.

Description

technical field [0001] The present application relates generally to communication systems and, more particularly, to a system, apparatus and method for counteracting resonant frequency shifts when a wireless communication system, as used in a wireless hearing aid, switches between transmit and receive modes. Background technique [0002] Some wireless communication systems include a transmit-receive switch (hereinafter referred to as a TR switch) to transmit and receive signals using the same antenna. Examples of such wireless communication include magnetic field-based communication systems (also referred to herein as inductive communication systems) with a single inductive coil. In transmit mode, the inductive coil is energized to transmit a signal through the resulting time-varying magnetic field. In receive mode, when a time-varying magnetic field is present, the inductor coil induces a voltage representing the signal contained in that field. [0003] Preferably, the fr...

Claims

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Application Information

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IPC IPC(8): H04B5/02H04B5/06H04R5/033H04R25/00
CPCH04B5/0012H04B5/0075H04B5/02H04R2420/07H04R25/554H04R5/033H04B5/22H04B5/24H04B5/48
Inventor 穆罕默德·伊沙巴
Owner STARKEY LAB INC