Wireless power transmission device and method
First Claim
1. A terminal comprising:
- a receiver configured to wirelessly receive power from a wireless power transmission device; and
a controller configured to control an internal impedance based on terminal information and to transmit the terminal information to the wireless power transmission device via a reflected wave of a transmission signal received from the wireless power transmission device, wherein;
the terminal information identifies a charging rate of the terminal,the controller controls the internal impedance based on the charging rate of the terminal, andthe controller comprises;
a first load,a second load, anda switch configured to connect to either the first load or the second load, based on the terminal information.
1 Assignment
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Accused Products
Abstract
A wireless power transmission device and method are provided. An amount of power transmitted wirelessly by the wireless power transmission device may be controlled based on information to be transmitted by the wireless power transmission device, such that the information may be transmitted without using any additional device for information transmission. Additionally, an internal impedance of a terminal may be controlled based on information to be transmitted by the terminal, and a reflected wave of a transmission signal transmitted by the wireless power transmission device may be then controlled, such that the information may be transmitted without using any additional device for information transmission. Therefore, no further device may be desired, and thus a power consumption amount may be reduced, and there may be no need to match a communication part for information exchange with a transmission part for wireless power transmission.
25 Citations
6 Claims
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1. A terminal comprising:
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a receiver configured to wirelessly receive power from a wireless power transmission device; and a controller configured to control an internal impedance based on terminal information and to transmit the terminal information to the wireless power transmission device via a reflected wave of a transmission signal received from the wireless power transmission device, wherein; the terminal information identifies a charging rate of the terminal, the controller controls the internal impedance based on the charging rate of the terminal, and the controller comprises; a first load, a second load, and a switch configured to connect to either the first load or the second load, based on the terminal information. - View Dependent Claims (2, 3, 4)
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5. A wireless power transmission method of a terminal, the method comprising:
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wirelessly receiving power from a wireless power transmission device; controlling an internal impedance based on terminal information; and transmitting the terminal information to the wireless power transmission device via a reflected wave of a transmission signal received from the wireless power transmission device, wherein; the terminal information identifies a charging rate of the terminal, the controller controls the internal impedance based on the charging rate of the terminal, and the controlling of the internal impedance comprises connecting a switch to a first load or a second load, based on the terminal information. - View Dependent Claims (6)
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Specification