Method for transmitting signal by wireless power transmitter in wireless charging system, wireless power transmitter and wireless power receiver
First Claim
1. A method of transmitting a signal by a wireless power transmitter in a wireless charging system, the method comprising:
- transmitting a first beacon power for a first duration time in every first period;
transmitting a second beacon power for a second duration time in every second period;
detecting load changes while transmitting the second beacon power;
in response to the detected load changes, extending the second duration time to a predetermined third duration time, wherein the predetermined third duration time is determined before the second beacon power is transmitted; and
continually transmitting the second beacon power for the predetermined third duration time.
1 Assignment
0 Petitions
Accused Products
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.
15 Citations
8 Claims
-
1. A method of transmitting a signal by a wireless power transmitter in a wireless charging system, the method comprising:
-
transmitting a first beacon power for a first duration time in every first period; transmitting a second beacon power for a second duration time in every second period; detecting load changes while transmitting the second beacon power; in response to the detected load changes, extending the second duration time to a predetermined third duration time, wherein the predetermined third duration time is determined before the second beacon power is transmitted; and continually transmitting the second beacon power for the predetermined third duration time. - View Dependent Claims (2, 3, 4)
-
-
5. A wireless power transmitter, comprising:
-
a power transmission unit configured to transmit a first beacon power for a first duration time in every first period and transmit a second beacon power for a second duration time in every second period; a sensing unit configured to detect load changes while transmitting the second beacon power; and a controller configured to; extend the second duration time to a predetermined third duration time in response to the detected load changes, wherein the predetermined third duration time is determined before the second beacon power is transmitted, and continue to transmit the second beacon power for the predetermined third duration time. - View Dependent Claims (6, 7, 8)
-
Specification