Communication of wireless power receiver through wireless power signal
First Claim
1. A power receiver for transmitting a message using a power transmission signal, the power receiver comprising:
- a power receiving unit that is configured to receive a wireless power signal generated by a power transmitter;
a demodulation unit that is configured to demodulate the received wireless power signal;
a modulation unit that is configured to modulate the received wireless power signal; and
a controller that is configured to decode a first packet from the wireless power signal demodulated by the demodulation unit, determine whether or not a second packet is transmittable without collision with the decoded first packet, and control the modulation unit to modulate the received wireless power signal, in such a manner of including the second packet therein, when the second packet is transmittable according to the determination result.
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Accused Products
Abstract
The present specification discloses as one embodiment a power receiver for transmitting a message by using a power transmission signal. The power receiver comprises: a power reception portion for receiving the wireless power signal that is formed by a power transmitter; a demodulation portion for demodulating the received wireless power signal; a modulation portion for modulating the received wireless power signal; and a control portion for decoding a first packet from the wireless power signal that is demodulated by means of the demodulation portion, for determining whether a second packet that does not collide with the first packet which has been decoded can be transmitted, and for modulating the received wireless power signal so as to comprise the second packet by controlling the modulation portion, when transmission is possible according to the result of the determination.
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Citations
14 Claims
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1. A power receiver for transmitting a message using a power transmission signal, the power receiver comprising:
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a power receiving unit that is configured to receive a wireless power signal generated by a power transmitter; a demodulation unit that is configured to demodulate the received wireless power signal; a modulation unit that is configured to modulate the received wireless power signal; and a controller that is configured to decode a first packet from the wireless power signal demodulated by the demodulation unit, determine whether or not a second packet is transmittable without collision with the decoded first packet, and control the modulation unit to modulate the received wireless power signal, in such a manner of including the second packet therein, when the second packet is transmittable according to the determination result. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for transmitting a control message, performed by a wireless power receiver to take part in communication using a power signal, the method comprising:
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receiving a wireless power signal received by a coil; acquiring one or more packets based on a current generated in response to the received wireless power signal; decoding the acquired one or more packets; deciding a slot to be useable on the received wireless power signal without collision with the decoded packets; generating a response packet including originator information and a control message; and transmitting the response packet by changing a load connected to the coil in such a manner that the response packet is included in the decided slot of the wireless power signal. - View Dependent Claims (10, 11)
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12. A control method for a power transmitter which adjusts a wireless power transfer based on a wireless power signal modulated by one or more power receivers, the control method comprising:
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generating a wireless power signal; receiving a modulated wireless power signal of a first period; acquiring packets belonging to the first period by demodulating the wireless power signal of the first period; adjusting power supplied for generating the wireless power signal based on originator addresses and control messages of the packets belonging to the first period, receiving a modulated wireless power signal of a second period; acquiring packets belonging to the second period by demodulating the wireless power signal of the second period; comparing the originator addresses of the packets belonging to the first period with the originator addresses of the packets belonging to the second period; and changing a phase of the one or more power receivers based on the comparison result. - View Dependent Claims (13, 14)
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Specification