Cover for a mobile telephone handset

• US 20030003864A1
• Filed: 06/28/2001
• Published: 01/02/2003
• Est. Priority Date: 06/28/2001
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Locke, Antony
• Application Number:
  US09/892,639
• Publication Number:
  US 20030003864A1
• Time in Patent Office: Days
• US Class Current: 455/41.1
• CPC Class Codes: H04B 5/00 Near-field transmission systems, e.g. inductive or capacitive transmission systems
• CPC Class Codes: H04B 5/0006 using a receiver structurally associated with a loudspeaker or an earphone
• CPC Class Codes: H04B 5/0075 using inductive coupling transformers or inductances adapted for inductive coupling H01F38/14
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04M 1/215 by non-intrusive coupling means, e.g. acoustic couplers
• CPC Class Codes: H04M 1/6016 in the receiver circuit
• CPC Class Codes: H04M 1/72478 for hearing-impaired users
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils

Abstract

A cover for a mobile telephone handset comprises an induction coil for generating a magnetic field signal for a hearing aid having pick-up coil.

Claims

1. A cover for a mobile telephone handset comprising an induction coil for generating a magnetic field signal for a hearing aid having a pick-up coil, whereby said magnetic signal corresponds to an audio signal provided by said handset.

2. A cover according to claim 1, comprising a shell having a plurality of apertures for providing respective windows to said handset.

3. A cover according to claim 2, comprising an amplifier circuit for driving said induction coil.

4. A cover according to claim 3, comprising a connector for receiving the audio signal from said handset.

5. A cover according to claim 4, wherein said connector is configured to engage a corresponding connector disposed on a face of said handset which the cover conceals.

6. A cover according to claim 4, wherein said connector is configured to engage a corresponding connector on a face of said handset other than a face which the cover conceals.

7. A cover according to claim 1, wherein the cover is for a face of said handset which provides a keypad.

8. A cover according to claim 1, wherein the cover is for a face of said handset intended to be held towards a user'"'"'s ear during communication.

9. Apparatus comprising:

a mobile telephone handset and

a cover for said mobile telephone handset comprising an induction coil for generating a magnetic field signal for a hearing aid having a pick-up coil, whereby said magnetic signal corresponds to an audio signal provided by said handset.

10. A cover for an electronic device comprising an induction coil for generating a magnetic field signal for a hearing aid having a pick-up coil, whereby said magnetic signal corresponds to an audio signal provided by said device.