WIRELESS POWER TRANSMITTER, WIRELESS POWER RECEIVER AND CONTROL METHOD THEREOF

• US 20140327409A1
• Filed: 05/05/2014
• 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: LEE, Kyung-Woo, BYUN, Kang-Ho, JUNG, Hee-Won, LEE, Ho-Seong
• Granted Patent: US 9,461,502 B2
• Time in Patent Office: Days
• US Class Current: 320/137
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H02J 50/12 of the resonant type
• 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: H04B 5/24 Inductive coupling
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A control method for performing wireless charging in a wireless power receiver is disclosed. The control method includes receiving charging power from a wireless power transmitter; detecting transition of the wireless power receiver from a Stand Alone (SA) mode to a Non Stand Alone (NSA) mode; upon detecting the mode transition, generating a message including address information used to re-connect with the wireless power transmitter; and transmitting the message to the wireless power transmitter.

Claims

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

receiving charging power from a wireless power transmitter;

detecting transition of the wireless power receiver from a Stand Alone (SA) mode to a Non Stand Alone (NSA) mode;

upon detecting the mode transition, generating a message including address information used to re-connect with the wireless power transmitter; and

transmitting the message to the wireless power transmitter.

2. The control method of claim 1, wherein the message includes a Power Reception Unit (PRU) alert signal.

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

upon detecting the mode transition, storing the address information used to re-connect with the wireless power transmitter.

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

upon completion of the mode transition, re-connecting with the wireless power transmitter using the address information.

5. The control method of claim 4, further comprising:

upon completion of the mode transition, loading a communication scheme stack for communication with the wireless power transmitter from an application processor of the wireless power receiver; and

re-connecting with the wireless power transmitter using the address information, based on the loaded communication scheme stack.

6. The control method of claim 5, wherein the address information used to re-connect with the wireless power transmitter includes a public address that is different from a random address in the SA mode.

7. The control method of claim 1, wherein the address information used to re-connect with the wireless power transmitter includes a public address that is the same as a public address in the SA mode.

8. The control method of claim 1, wherein the address information used to re-connect with the wireless power transmitter includes a random address that is the same as a random address in the SA mode.

9. The control method of claim 1, wherein the address information used to re-connect with the wireless power transmitter includes a second random address that is different from a first random address in the SA mode.

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

transmitting charging power to a wireless power receiver;

receiving, from the wireless power receiver, a message including address information used to re-connect with the wireless power transmitter; and

upon receiving the message from the wireless power receiver, reconnecting with the wireless power receiver using the address information.

11. The control method of claim 10, further comprising storing the address information to be used to re-connect with the wireless power transmitter.

12. The control method of claim 10, wherein the address information used to re-connect with the wireless power transmitter includes a public address that is different from a random address in a Stand Alone (SA) mode of the wireless power receiver.

13. The control method of claim 10, wherein the address information used to re-connect with the wireless power transmitter includes a public address that is the same as a public address in an SA mode of the wireless power receiver.

14. The control method of claim 10, wherein the address information used to re-connect with the wireless power transmitter includes a random address that is the same as a random address in an SA mode of the wireless power receiver.

15. The control method of claim 10, wherein the address information used to re-connect with the wireless power transmitter includes a second random address that is different from a first random address in an SA mode of the wireless power receiver.