METHOD FOR TRANSMITTING SIGNAL BY WIRELESS POWER TRANSMITTER IN WIRELESS CHARGING SYSTEM, WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER

Title:

METHOD FOR TRANSMITTING SIGNAL BY WIRELESS POWER TRANSMITTER IN WIRELESS CHARGING SYSTEM, WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER

Document Type and Number:

WIPO Patent Application WO/2015/199442

Kind Code:

A1

Abstract:

A method of transmitting a signal by a wireless power transmitter in a wireless charging system, wireless power transmitter, and a wireless power receiver are provided. The method includes transmitting a first signal; transmitting a second signal; detecting a load change during a period in which the second signal is transmitted; and extending a transmission period of the second signal based on the detected load change. The wireless power transmitter includes a power transmission unit configured to transmit a first signal and a second signal; a sensing unit configured to detect a load change during a period in which the second signal is transmitted; and a controller configured to extend a transmission period of the second signal based on the detected load change.

Inventors:

LEE KYUNG-WOO (KR)
SONG KEUM-SU (KR)
JUNG HEE-WON (KR)

Application Number:

PCT/KR2015/006432

Publication Date:

December 30, 2015

Filing Date:

June 24, 2015

Export Citation:

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Assignee:

SAMSUNG ELECTRONICS CO LTD (KR)

International Classes:

H02J17/00; H02J7/00

Foreign References:

US20140159653A1	2014-06-12
US20120214536A1	2012-08-23
US20120262002A1	2012-10-18
US20120223589A1	2012-09-06
US20140111018A1	2014-04-24

Other References: