Wireless transmission system for hearing devices

• US 7,239,713 B2
• Filed: 09/30/2003
• Issued: 07/03/2007
• Est. Priority Date: 09/30/2002
• Status: Active Grant

• Current Assignee: Sivantos Gmbh (WS Audiology A/S)
• Original Assignee: Siemens Audiologische Technik GmbH (Siemens AG)
• Inventors: Niederdrank, Torsten
• Primary Examiner(s): Tran; Sinh
• Assistant Examiner(s): Ensey; Brian
• Application Number:
  US10/675,664
• Publication Number:
  US 20040131213A1
• Time in Patent Office: 1,372 Days
• Field of Search: 381/23.1, 381/71.6, 381/71.7, 381/312, 381/313, 381/314, 381/315, 381/316, 381/320, 381/321, 704/222, 704/223, 704/227, 702/57, 455/264, 455/82, 455/83, 455/3.06, 455/107, 375/219, 375/220
• US Class Current: 381/317
• CPC Class Codes: H04R 2225/51 Aspects of antennas or their circuitry in or for hearing aids
• CPC Class Codes: H04R 2460/03 Aspects of the reduction of energy consumption in hearing devices
• CPC Class Codes: H04R 25/552 Binaural
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils

Abstract

A transmission system for rearing devices is provided that, in spite of having less energy available, allows for a transmission relatively safe from interference. Such a gearing device has a self-exciting oscillation circuit as an antenna that enables an inductive coupling in the long-wave range. Additionally, or alternatively, a hearing device is provided with a receiving device that comprises a median filter device with which a median value can be determined from a plurality of values for noise signal prevention.

Claims

1. A hearing device, comprising:

a radio device to transmit signals to a second hearing device, the radio device comprising;

an antenna device for transmitting, the antenna device comprising a self-exciting oscillation circuit, including a coil and a first capacitor;

the radio device further comprising;

a first switch; and

an amplifier and a series connection of a second capacitor and a second switch being connectable in parallel to the first capacitor by the first switch, so that the antenna circuit is excited by the amplifier when the first switch is in its conductive state and a resonance frequency of the self-exciting oscillation circuit can be modulated by switching the second switch while the first switch is in its conductive state.

2. The hearing device according to claim 1, wherein the antenna device consists exclusively of an LC oscillation circuit.

3. The hearing device according to claim 1 further comprising a receiving device comprising a median filter device configured to reduce noise signals.

4. The hearing device according to claim 1, wherein a half-duplex transmission line is established with the radio device.

5. The hearing device according to claim 1, wherein a signal transmission is implemented in the long-wave range with the radio device.

11. The hearing device according to claim 1, further comprising:

a receiving device;

wherein the self-exciting oscillation circuit is an LC oscillation circuit that is configured both to generate a carrier frequency for transmission and to clock the receiving device.

12. The hearing aid device according to claim 11, wherein the LC oscillation circuit is used to clock a filter device of the receiving device.

6. A hearing device, comprising:

a receiving device configured to receive a plurality of values representing frequencies of at least one radio signal, the receiving device comprising a median filter device with which a median value of the plurality of values representing frequencies is determined for noise signal prevention; and

an antenna device with a self-exciting LC oscillation circuit, wherein the LC oscillation circuit generates a carrier frequency for transmission and clocks the median filtering by the median filter.

7. The hearing device according to claim 6, wherein the antenna device consists exclusively of the LC oscillation circuit.

8. The hearing device according to claim 6, further comprising a transmitter device configured to permit a half-duplex transmission line to be established with the receiving device and the transmitter device.

9. The hearing device according to claim 6, wherein the receiving device is configured to receive in the long-wave range.

10. The hearing device according to claim 6, wherein each of the plurality of values is a measure for a period duration of the self-exciting oscillation circuit.

13. A hearing device, comprising:

a radio device to transmit signals to a second hearing device, the radio device comprising an antenna device to perform at least one of transmitting and receiving, the antenna device comprising a self-exciting oscillation circuit; and

a receiving device configured to receive a plurality of values of at least one radio signal, the receiving device comprising a median filter device with which a median value of the plurality of values is determined for noise signal prevention;

wherein the antenna device a self-exciting oscillation circuit comprises an LC oscillation circuit and the LC oscillation circuit is used both to generate a carrier frequency for transmission and to clock the receiving device.

14. The hearing aid device according to claim 13, wherein the LC oscillation circuit is used to clock a filter device of the receiving device.

15. A method for noise signal reduction in hearing device receiving signals, comprising:

transmitting signals by a radio device of a first hearing device to a second hearing device;

performing, by an antenna device, which comprises a self-exciting oscillation circuit, of a radio device of the first hearing devices, the transmitting;

receiving a plurality of values representing frequencies of at least one radio signal via the first hearing device;

median filtering of the plurality of values representing frequencies to produce a median value for a noise signal reduction; and

providing an LC oscillation circuit that both generates a carrier frequency for transmission and clocks the median filtering.

16. A hearing device, comprising:

a radio device to transmit signals to a second hearing device, the radio device comprising an antenna device to perform at least one of transmitting and receiving, the antenna device comprising a self-exciting oscillation circuit;

a receiver for receiving a plurality of values of at least one radio signal via a hearing device;

a median filter for median filtering of the plurality of values to produce a median value for a noise signal reduction; and

an LC oscillation circuit that both generates a carrier frequency for transmission and clocks the median filtering.

17. A hearing device, comprising:

a receiving device configured to receive a plurality of values of at least one radio signal, the receiving device comprising a median filter device with which a median value of the plurality of values is determined for noise signal prevention; and

a radio device with an antenna device comprising a self-exciting oscillation circuit comprising an LC oscillation circuit including a coil and a first capacitor, wherein the LC oscillation circuit is used both to generate a carrier frequency for transmission and to clock the receiving device;

the radio device further comprising;

a switch; and

a second capacitor being connectable in parallel to the first capacitor by the switch, so that a resonance frequency of the self-exciting oscillation circuit can be modulated by switching the switch.

18. A method for noise signal reduction and hearing device receiving signals, comprising:

receiving a plurality of values representing frequencies of at least one radio signal via an antenna device of a hearing device, the antenna device comprising a self-exciting oscillation circuit; and

median filtering of the plurality of values representing frequencies to produce a median value for a noise signal reduction by using the self-exciting oscillation circuit to clock the median filtering.