METHOD AND APPARATUS FOR AVOIDING NOISE IN NON-CONTACT CHARGING SYSTEM

• US 20120286727A1
• Filed: 05/10/2012
• Published: 11/15/2012
• Est. Priority Date: 05/12/2011
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Jung-Kun, Jung, Won-Bae
• Granted Patent: US 9,479,006 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/00034 Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless charging method in a wireless charging system is provided. In the method, wireless charging is performed by providing wireless charging power to a charging circuit. When both a first communication signal and a second communication signal are detected while the wireless charging is performed, the wireless charging power is isolated from the charging circuit. The wireless charging power is isolated so that noise included in the wireless charging power is not provided to the charging circuit.

Claims

1. A wireless charging method in a wireless charging system, the method comprising:

performing wireless charging by providing wireless charging power to a charging circuit; and

when detecting both a first communication signal and a second communication signal while performing the wireless charging, isolating the wireless charging power from the charging circuit.

2. The method of claim 1, further comprising, when not detecting both the first communication signal and the second communication signal, providing the wireless charging power to the charging circuit again to perform the wireless charging.

3. The method of claim 1, further comprising receiving the wireless charging power from a wireless charging power transmitter before performing the wireless charging.

4. The method of claim 1, wherein the first signal comprises a modem communication signal.

5. The method of claim 1, wherein the second signal comprises a wireless charging communication signal.

6. A wireless charging apparatus configured to perform wireless charging, the apparatus comprising:

a wireless charger configured to provide wireless charging power; and

a switch configured to provide the wireless charging power provided by the wireless charger to a charging circuit and, when both a first communication signal and a second communication signal are detected while providing the wireless charging power to the charging circuit, to isolate the wireless charging power from the charging circuit.

7. The apparatus of claim 6, wherein when both the first communication signal and the second communication signal are not detected, the switch is further configured to provide the wireless charging power to the charging circuit again.

8. The apparatus of claim 6, wherein the wireless charger is configured to receive the wireless charging power from a wireless charging power transmitter before providing the wireless charging power.

9. The apparatus of claim 6, wherein the first signal comprises a modem communication signal provided by a modem.

10. The apparatus of claim 6, wherein the second signal comprises a wireless charging communication signal provided by the wireless charger.

11. The apparatus of claim 6, further comprising the charging circuit, wherein the charging circuit is configured to charge a battery using the wireless charging power provided by the switch.

12. The apparatus of claim 11, wherein the switch is integrated in the charging circuit.

13. An apparatus of a mobile terminal configured to perform wireless charging, the apparatus comprising:

a modem configured to communicate with a node other than the mobile terminal;

a wireless manager configured to perform wireless charging by providing wireless charging power to a charging circuit and, when both a first communication signal and a second communication signal are detected while performing the wireless charging, to isolate the wireless charging power from the charging circuit; and

a controller configured to control the modem and the wireless manager.

14. The apparatus of claim 13, wherein the wireless manager comprises:

a wireless charger configured to provide the wireless charging power; and

a switch configured to provide the wireless charging power provided by the wireless charger to the charging circuit and, when both the first communication signal and the second communication signal are detected while providing the wireless charging power to the charging circuit, to isolate the wireless charging power from the charging circuit.

15. The apparatus of claim 14, wherein when both the first communication signal and the second communication signal are not detected, the switch is further configured to provide the wireless charging power to the charging circuit again.

16. The apparatus of claim 14, wherein the wireless charger is configured to receive the wireless charging power from a wireless charging power transmitter before providing the wireless charging power.

17. The apparatus of claim 14, wherein the first signal comprises a modem communication signal provided by the modem.

18. The apparatus of claim 14, wherein the second signal comprises a wireless charging communication signal provided by the wireless charger.

19. The apparatus of claim 14, wherein the wireless manager further comprises the charging circuit, and wherein the charging circuit is configured to charge a battery using the wireless charging power provided by the switch.

20. The apparatus of claim 19, wherein the switch is integrated in the charging circuit.