Method for controlling wireless power transmitter and wireless power receiver

• US 10,084,344 B2
• Filed: 01/29/2015
• Issued: 09/25/2018
• Est. Priority Date: 01/29/2014
• 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
• Primary Examiner(s): Memula, Suresh
• Application Number:
  US14/608,990
• Publication Number:
  US 20150214775A1
• Time in Patent Office: 1,335 Days
• Field of Search: 320137
• 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 50/80 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

Abstract

A control method of a wireless power transmitter for transmitting charging power to a wireless power receiver is provided. The control method includes receiving setting information from the wireless power receiver, determining a load variation of the wireless power receiver for a set time period, and determining that the wireless power receiver is a charging target, if the load variation of the wireless power matches the received setting information.

Claims

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

transmitting setting information to the wireless power transmitter;

generating a load variation based on a pattern included in the setting information within a predetermined time;

receiving a message including a bit field indicating a cross-connection from the wireless power transmitter; and

terminating a connection to the wireless power transmitter based on the message.

2. The method of claim 1, wherein the setting information includes binary data.

3. The method of claim 1, wherein the setting information is randomly generated information.

4. The method of claim 1, wherein the setting information includes a plurality of bits.

5. A control method of a wireless power transmitter, the method comprising:

receiving setting information from a wireless power receiver;

detecting a load variation;

comparing the load variation to a pattern included in the setting information; and

transmitting a message including a bit field indicating a cross-connection.

6. The method of claim 5, wherein the setting information includes binary data.

7. The method of claim 5, wherein the setting information is randomly generated information.

8. The method of claim 5, wherein the setting information includes a plurality of bits.