Wireless power transmitter, wireless power receiver, and control methods thereof
First Claim
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1. A method for controlling a wireless power transmitter, the method comprising:
- receiving a first signal from a wireless power receiver;
based on the first signal from the wireless power receiver, transmitting, to the wireless power receiver, a second signal to establish a communication connection with the wireless power receiver;
transmitting, over the communication connection, to the wireless power receiver, a control signal including time information;
detecting that a load is changed by the wireless power receiver;
identifying whether a period of time for which the changed load is maintained corresponds to the time information; and
determining that the wireless power receiver is cross-connected.
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Abstract
A wireless power transmitter and a method for operating the wireless power transmitter are provided, which transmit charging power to a wireless power receiver. A control signal is provided that includes time information and load change information, and a load change of the wireless power receiver is detected during a period of time corresponding to the first time information. If the detected load change of the wireless power receiver corresponds to the load change information included in the control signal, a determination is made that the wireless power receiver is admitted for charging.
20 Citations
14 Claims
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1. A method for controlling a wireless power transmitter, the method comprising:
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receiving a first signal from a wireless power receiver; based on the first signal from the wireless power receiver, transmitting, to the wireless power receiver, a second signal to establish a communication connection with the wireless power receiver; transmitting, over the communication connection, to the wireless power receiver, a control signal including time information; detecting that a load is changed by the wireless power receiver; identifying whether a period of time for which the changed load is maintained corresponds to the time information; and determining that the wireless power receiver is cross-connected. - View Dependent Claims (2, 3, 4, 5)
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6. A wireless power transmitter comprising:
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a power transmitting unit configured to wirelessly transmit power; a communication unit; and a controller configured to; control the communication unit to receive a first signal from a wireless power receiver, based on the first signal from the wireless power receiver, control the communication unit to transmit, to the wireless power receiver, a second signal to establish a communication connection with the wireless power receiver, control the communication unit to transmit, over the communication connection, to the wireless power receiver a control signal including time information, detect that a load is changed by the wireless power receiver, identify whether a period of time for which the changed load is maintained corresponds to the time information, and based on identifying that the period of time does not correspond to the time information, determine that the wireless power receiver is cross-connected. - View Dependent Claims (7, 8, 9, 10)
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11. A method for controlling a wireless power receiver, the method comprising:
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receiving, from a wireless power transmitter, a control signal including time information; changing a load state of the wireless power receiver, in response to receiving the control signal; maintaining the changed load state of the wireless power receiver, during a period of time corresponding to the time information; and returning the changed load state of the wireless power receiver back to an original load state of the wireless power receiver before the changing, after a lapse of the period of time corresponding to the time information. - View Dependent Claims (12)
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13. A wireless power receiver comprising:
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a power receiving unit configured to receive a charging power from a wireless power transmitter; a communication unit; and a controller configured to; receive, by using the communication unit, a control signal including time information from the wireless power transmitter, change a load state of the wireless power receiver, in response to receiving the control signal, maintain the changed load state of the wireless power receiver, during a period of time corresponding to the time information, and return the changed load state of the wireless power receiver back to an original load state of the wireless power receiver before the changing, after a lapse of the period of time corresponding to the time information. - View Dependent Claims (14)
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Specification