Wireless energy receiver/transmitter/system and wireless energy transmission method
First Claim
1. In a wireless energy transmission system including a wireless energy receiving device and a wireless energy transmitting device, at least one of the wireless energy receiving device and the wireless energy transmitting device comprising:
- a first oscillator configured to output an in-phase (I) signal;
a second oscillator configured to output a quadrature-phase (Q) signal having a 90-degree phase difference from the I signal, wherein each of the first and second oscillators comprises a resonator having at least one inductor and at least one capacitor, and a current changing block connected to the at least one inductor and configured to change an amount of current flowing through the at least one inductor; and
a monitor configured to monitor a frequency of at least one of the I and Q signals and control the current changing block according to a monitoring result.
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Accused Products
Abstract
A wireless energy transmission system includes a wireless energy transmitting device and a wireless energy receiving device configured to receive power from the wireless energy transmitting device through a magnetic field. The wireless energy transmitting device includes a signal generator configured to include a resonator including at least one inductor and at least one capacitor and to generate at least two signals having a 90-degree phase difference from each other. The wireless energy receiving device includes a frequency adjustor configured to match a frequency between the wireless energy transmitting device and the wireless energy receiving device.
4 Citations
20 Claims
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1. In a wireless energy transmission system including a wireless energy receiving device and a wireless energy transmitting device, at least one of the wireless energy receiving device and the wireless energy transmitting device comprising:
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a first oscillator configured to output an in-phase (I) signal; a second oscillator configured to output a quadrature-phase (Q) signal having a 90-degree phase difference from the I signal, wherein each of the first and second oscillators comprises a resonator having at least one inductor and at least one capacitor, and a current changing block connected to the at least one inductor and configured to change an amount of current flowing through the at least one inductor; and a monitor configured to monitor a frequency of at least one of the I and Q signals and control the current changing block according to a monitoring result. - View Dependent Claims (2, 3, 4)
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5. A wireless energy receiving device comprising:
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a first oscillator configured to output an in-phase (I) signal; and a second oscillator configured to output a quadrature-phase (Q) signal having a 90-degree phase difference from the I signal, wherein each of the first and second oscillators comprises; a first inductor pair having first mutual inductance and comprising a first inductor and a second inductor; a second inductor pair having second mutual inductance and comprising a third inductor and a fourth inductor; and a capacitor connected between the first inductor and the third inductor, wherein each of the first and second oscillators controls a magnitude of received wireless energy by changing a resonance frequency by changing an amount of current flowing through the second and fourth inductors. - View Dependent Claims (6, 7, 8, 9, 10)
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11. An electronic system comprising:
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a wireless energy receiving device configured to receive wireless energy from a wireless energy transmitting device through a magnetic field and generate reception power; and a power unit configured to receive the reception power from the wireless energy receiving device and supply at least a portion of internal power necessary for operation of the electronic system, wherein the wireless energy receiving device comprises; a first oscillator configured to output an in-phase (I) signal; and a second oscillator configured to output a quadrature-phase (Q) signal having a 90-degree phase difference from the I signal, and each of the first and second oscillators comprises; a resonator comprising at least one inductor and at least one capacitor; and a current changing block connected to the at least one inductor to change an amount of current flowing through the at least one inductor. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method of receiving wireless energy using a wireless energy receiving device, the method comprising:
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generating an in-phase (I) signal and a quadrature-phase (Q) signal having a 90-degree phase difference from the I signal using a quadrature oscillator comprising at least one pair of inductors having mutual inductance; and adjusting a resonance frequency by changing an amount of current flowing through one inductor in the at least one pair of inductors. - View Dependent Claims (19, 20)
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Specification