APPARATUS AND METHOD FOR DETERMINING WHETHER A POWER RECEIVER IS REMOVED FROM THE APPARATUS
First Claim
1. A method for transmitting wireless power by a wireless power transmitter, the method comprising:
- detecting a change in impedance of the wireless power transmitter caused by a placement of a wireless power receiver;
applying driving power for the wireless power receiver, in response to detecting the change;
receiving a wireless power transmitter search signal from the wireless power receiver, wherein the driving power is used to transmit the wireless power transmitter search signal from the wireless power receiver to the wireless power transmitter;
transmitting a wireless power transmitter search response signal corresponding to the wireless power transmitter search signal;
registering the wireless power receiver in a wireless power network corresponding to the wireless power transmitter; and
applying charging power for the wireless power receiver.
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Accused Products
Abstract
A method and apparatus are provided for determining, by a wireless power transmitter, whether a wireless power receiver is removed from a wireless power network managed by the wireless power transmitter. The method includes transmitting a command signal to report power information of the wireless power receiver at stated periods; determining whether a report signal corresponding to the command signal is received from the wireless power receiver; and determining that the wireless power receiver is removed from the wireless power network, if the report signal is not received after transmitting the command signal a predetermined number of times at the stated periods.
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Citations
24 Claims
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1. A method for transmitting wireless power by a wireless power transmitter, the method comprising:
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detecting a change in impedance of the wireless power transmitter caused by a placement of a wireless power receiver; applying driving power for the wireless power receiver, in response to detecting the change; receiving a wireless power transmitter search signal from the wireless power receiver, wherein the driving power is used to transmit the wireless power transmitter search signal from the wireless power receiver to the wireless power transmitter; transmitting a wireless power transmitter search response signal corresponding to the wireless power transmitter search signal; registering the wireless power receiver in a wireless power network corresponding to the wireless power transmitter; and applying charging power for the wireless power receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A wireless power transmitter, comprising:
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a power transmitter; a communication unit; and a controller configured to; detect a change in impedance of the wireless power transmitter caused by a placement of a wireless power receiver, and apply driving power for the wireless power receiver to the power transmitter, in response to detecting the change, wherein the communication unit receives a wireless power transmitter search signal from the wireless power receiver, wherein the driving power is used to transmit the wireless power transmitter search signal from the wireless power receiver to the wireless power transmitter, wherein the communication unit transmits a wireless power transmitter search response signal corresponding to the wireless power transmitter search signal, and wherein the controller registers the wireless power receiver in a wireless power network corresponding to the wireless power transmitter and applies charging power for the wireless power receiver to the power transmitter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification