WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER AND CONTROL METHOD THEREOF

• US 20140327319A1
• Filed: 04/30/2014
• Published: 11/06/2014
• Est. Priority Date: 05/03/2013
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: BYUN, Kang-Ho, LEE, Kyung-Woo, LEE, Ho-Seong, KWON, Hyuk-Choon, JUNG, Soo-Yeon, JUNG, Hee-Won
• Granted Patent: US 10,069,348 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• 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: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A control method for transmitting charging power to a wireless power receiver in a wireless power transmitter is provided. The control method includes receiving a Power Transmission Unit (PTU) searching signal for searching for a wireless power transmitter, from the wireless power receiver; obtaining information about an identifier of a signal in a communication scheme used by the wireless power receiver; and exchanging signals with the wireless power receiver based on the information about the identifier of the signal in the communication scheme used by the wireless power receiver.

Claims

1. A control method for transmitting charging power to a wireless power receiver in a wireless power transmitter, the control method comprising:

receiving a Power Transmission Unit (PTU) searching signal for searching for a wireless power transmitter, from the wireless power receiver;

obtaining information about an identifier of a signal in a communication scheme used by the wireless power receiver; and

exchanging signals with the wireless power receiver based on the information about the identifier of the signal in the communication scheme used by the wireless power receiver.

2. The control method of claim 1, wherein the information about the identifier of the signal in the communication scheme used by the wireless power receiver includes handle value information for at least one characteristic of a Universally Unique Identifier (UUID).

3. The control method of claim 2, wherein exchanging signals with the wireless power receiver comprises performing at least one of transmission of a read signal to the wireless power receiver, reception of a read response signal from the wireless power receiver, and transmission of a write signal to the wireless power receiver, based on the handle value information for the at least one characteristic of the UUID.

4. The control method of claim 2, further comprising sequentially determining handle values of other characteristics of the UUID based on the handle value information for the at least one characteristic of the UUID.

5. The control method of claim 2, further comprising sequentially determining handle values of other characteristics of the UUID based on the handle value information for the at least one characteristic of the UUID and a pre-stored computation rule.

6. The control method of claim 1, wherein the information about the identifier of the signal in the communication scheme used by the wireless power receiver is included the PTU searching signal.

7. The control method of claim 1, wherein the PTU searching signal is an advertisement signal.

8. The control method of claim 7, wherein the advertisement signal includes information about a difference between a handle value for an initial characteristic of a UUID and a handle value for at least one other characteristic following the initial characteristic.

9. The control method of claim 1, further comprising:

transmitting a connection request signal to the wireless power receiver in response to the PTU searching signal; and

forming a communication connection with the wireless power receiver.

10. A control method for receiving charging power from a wireless power transmitter in a wireless power receiver, the control method comprising:

transmitting a Power Transmission Unit (PTU) searching signal for searching for a wireless power transmitter, to the wireless power transmitter;

receiving a communication connection request signal from the wireless power transmitter, and forming a communication connection with the wireless power transmitter; and

exchanging signals with the wireless power transmitter based on information about an identifier of a signal in a communication scheme used by the wireless power receiver;

wherein the PTU searching signal includes the information about the identifier of the signal in the communication scheme used by the wireless power receiver.

11. The control method of claim 10, wherein the information about the identifier of the signal in the communication scheme used by the wireless power receiver includes handle value information for at least one characteristic of a Universally Unique Identifier (UUID).

12. The control method of claim 11, wherein exchanging signals with the wireless power transmitter comprises performing at least one of reception of a read signal from the wireless power transmitter, transmission of a read response signal to the wireless power transmitter, and reception of a write signal from the wireless power transmitter, based on the handle value information for the at least one characteristic of the UUID.

13. The control method of claim 11, wherein handle values of other characteristics of the UUID are sequentially determined based on the handle value information for the at least one characteristic of the UUID.

14. The control method of claim 10, wherein the PTU searching signal is an advertisement signal.

15. The control method of claim 14, wherein the advertisement signal includes information about a difference between a handle value for an initial characteristic of the UUID and a handle value for at least one other characteristic following the initial characteristic.