APPARATUS AND METHOD FOR REDUCING INTERFERENCE EFFECTS IN THE CASE OF A WIRELESS DATA TRANSMISSION IN HEARING DEVICE APPLICATIONS

• US 20090274328A1
• Filed: 05/04/2009
• Published: 11/05/2009
• Est. Priority Date: 05/05/2008
• Status: Abandoned Application

• Current Assignee: Sivantos Pte. Ltd. (WS Audiology A/S)
• Original Assignee: Sivantos Pte. Ltd. (WS Audiology A/S)
• Inventors: Ruckerl, Gottfried, Gebhardt, Volker, Nikles, Peter
• Application Number:
  US12/434,931
• Publication Number:
  US 20090274328A1
• Time in Patent Office: Days
• US Class Current: 381/331
• CPC Class Codes: H04R 2225/49 Reducing the effects of electromagnetic noise on the functioning of hearing aids, by, e.g. shielding, signal processing adaptation, selective (de)activation of electronic parts in hearing aid
• CPC Class Codes: H04R 2225/51 Aspects of antennas or their circuitry in or for hearing aids
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils

Abstract

An apparatus and a method are provided for reducing an interference input coupling caused by asymmetrically embodied field lines of at least one hearing device component into a receiving antenna of a wireless data transmission facility of a hearing device. The apparatus includes at least one first means arranged in the hearing device, by means of which the asymmetry of the field lines is reduced and the field distortion is corrected. In addition, the receiving antenna can be geometrically adjusted to the outer interference field of the hearing device components such that interference currents induced in the antenna by means of field input coupling compensate.

Claims

1-10. -10. (canceled)

11. An apparatus for reducing an interference input coupling produced by asymmetrically embodied field lines of at least one hearing device component into a receiving antenna of a wireless data transmission facility of a hearing device, comprising:

a first means arranged in the hearing device, which reduces the asymmetry of the field lines; and

/or

a geometry of the receiving antenna, by which an induced interference current resulting from the asymmetrical interference field input coupling can be compensated.

12. The apparatus as claimed in claim 11, wherein the asymmetry of the field lines as a result of their distortion is caused by the presence of electrically conductive and/or magnetic components in the hearing device.

13. The apparatus as claimed in claim 12, wherein the hearing device components include clocked voltage controllers, semi-conductor components, supply and output lines of clocked switching circuits and a receiver.

14. The apparatus as claimed in claim 11, wherein the hearing device components include clocked voltage controllers, semi-conductor components, supply and output lines of clocked switching circuits and a receiver.

15. The apparatus as claimed in claim 11, wherein the first means is metallic.

16. The apparatus as claimed in claim 15, wherein the first means includes a compensation plate.

17. The apparatus as claimed in claim 15, wherein the first means includes at least one hearing device component.

18. The apparatus as claimed in claim 11, wherein the receiver antenna includes a coil bobbin and a winding surrounding the coil bobbin.

19. The apparatus as claimed in claim 18, wherein the winding surrounding the coil bobbin has a variable tightness.

20. The apparatus as claimed in claim 18, wherein the coil bobbin is asymmetrical.

21. A method for reducing an interference input coupling caused by asymmetrically embodied field lines of at least one hearing device component into a receiving antenna of a wireless data transmission facility of a hearing device, comprising:

compensating the asymmetrical field lines; and

/or

compensating an induced interference current resulting from the asymmetrical interference field input coupling.

22. A hearing apparatus, comprising:

a wireless data transmission facility comprising a receiving antenna;

a hearing device component producing asymmetrically field lines thereby causing interference to the antenna;

a first means which reduces the asymmetry of the field lines; and

/or

a geometry of the receiving antenna, by which an induced interference current resulting from the asymmetrical interference field input coupling can be compensated,

23. The hearing apparatus as claimed in claim 22, wherein the asymmetry of the field lines as a result of their distortion is caused by the presence of electrically conductive and/or magnetic components in the hearing device.

24. The hearing apparatus as claimed in claim 22, wherein the hearing device components include clocked voltage controllers, semi-conductor components, supply and output lines of clocked switching circuits and a receiver.

25. The apparatus as claimed in claim 22, wherein the first means is metallic.

26. The apparatus as claimed in claim 22, wherein the receiver antenna includes a coil bobbin and a winding surrounding the coil bobbin.

27. The apparatus as claimed in claim 26, wherein the winding surrounding the coil bobbin has a variable tightness.

28. The apparatus as claimed in claim 26, wherein the coil bobbin is asymmetrical.