ELECTROMAGNETIC INDUCTION FIELD COMMUNICATION

• US 20150319545A1
• Filed: 05/05/2014
• Published: 11/05/2015
• Est. Priority Date: 05/05/2014
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Kerselaers, Anthony, Gomm, Liesbeth
• Granted Patent: US 10,015,604 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 5/002 Monitoring the patient using a local or closed circuit, e.g. in a room or building A61B5/0017 takes precedence
• CPC Class Codes: G08C 17/04 using magnetically coupled devices
• CPC Class Codes: G16H 20/40 relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
• CPC Class Codes: H04B 13/005 Transmission systems in which the medium consists of the human body
• CPC Class Codes: H04B 5/22 Capacitive coupling
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/266 One coil at each side, e.g. with primary and secondary coils
• CPC Class Codes: H04B 5/48 Transceivers
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils
• CPC Class Codes: H04R 25/558 Remote control, e.g. of amplification, frequency
• CPC Class Codes: H04R 25/60 Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles ear wax retarders, e.g. mounting thereof H04R25/654
• CPC Class Codes: Y02A 90/10 Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Abstract

Consistent with an example embodiment there is an electromagnetic induction field communication system, illustratively, for communicating on or around the body. Two transceivers (or receiver and transmitter) contain coils and capacitors suitable for generating an electromagnetic induction field surrounding the body and are capable of communicating therebetween.

Claims

1. A communication system comprising:

a transmitter having a first coil, a first capacitor which has first and second plates, said first plate being connectable to a living body;

said second plate being configured to be exposed to an environment, wherein said transmitter is configured to generate an electromagnetic induction field having a magnetic near field and an electric near field; and

a receiver having a second coil;

a second capacitor which has third and fourth plates, said third plate being connectable to the living body;

said fourth plate being connectible to the environment, there being no galvanic connection between said transmitter and ground or between said receiver and ground.

2. The communication system of claim 1, further comprising:

a tuning capacitor in said transmitter.

3. The communication system of claim 1, further comprising:

a tuning capacitor in said receiver.

4. The communication system of claim 1, wherein said transmitter is a first transceiver.

5. The communication system of claim 1, wherein said transmitter is included in a hearing aid.

6. The communication system of claim 1, in which said transmitter and receiver are tuned in accordance with said living body'"'"'s capacitance to effect communication.

7. The communication system of claim 1, further comprising:

a wireless control unit configured to be held by the hand, wherein the wireless control unit is configured to communicate with either said receiver or transmitter via said electromagnetic induction field.

8. The communication system of claim 7, wherein said wireless control unit has a third capacitor with two plates and one of said two plates is configured for contact with said living body.

9. The communication system of claim 7, wherein said wireless control unit has a display.

10. The communication system of claim 1, wherein the first coil generates the magnetic near field.

11. The communication system of claim 1, wherein the first capacitor generates the electric near field.

12. The communication system of claim 1, wherein the receiver is configured to sense both the magnetic near field and the electric near field.

13. The communication system of claim 4, wherein the receiver is a second transceiver.

14. The communication system of claim 13, wherein the first transceiver and the second transceiver are configured for bidirectional communication.

15. The communication system of claim 5, wherein the receiver is included in the hearing aid.

16. The communication system of claim 1, wherein the first coil generates the magnetic near field and the first capacitor generates the electric near field.