In-band data communication system using wireless power
First Claim
1. An in-band data communication apparatus using a wireless power, the apparatus comprising:
- a modulating unit configured to modulate data by mixing a predetermined signal and pulse signal-type data;
a demodulating unit configured to detect reflected power generated due to impedance mismatching between a source resonator and a target resonator, and to demodulate received data based on a variance of the reflected power, wherein the received data is modulated using a variance of the reflected power by the target resonator;
a source resonance unit configured to transmit transmission power including the modulated data to the target resonator, and to receive the reflected power; and
a controller to control the pulse signal-type data, and to control impedance matching between the source resonator and the target resonator,wherein the demodulating unit comprises;
a low-pass filter configured to block a harmonic signal from the detected reflected power.
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Abstract
Provided is data transmission and reception that transmits and receives data using a wireless power between wireless power transmitter and a wireless power receiver. An in-band data communication apparatus using a wireless power may include a modulating unit configured to modulate data by mixing a predetermined signal and pulse signal-type data; a demodulating unit configured to detect reflected power generated due to impedance mismatching between a source resonator and a target resonator, and to demodulate received data based on a variance of the reflected power; a source resonance unit configured to transmit transmission power including the modulated data to the target resonator, and to receive the reflected power; and a controller to control the pulse signal-type data, and to control impedance matching between the source resonator and the target resonator.
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Citations
19 Claims
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1. An in-band data communication apparatus using a wireless power, the apparatus comprising:
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a modulating unit configured to modulate data by mixing a predetermined signal and pulse signal-type data; a demodulating unit configured to detect reflected power generated due to impedance mismatching between a source resonator and a target resonator, and to demodulate received data based on a variance of the reflected power, wherein the received data is modulated using a variance of the reflected power by the target resonator; a source resonance unit configured to transmit transmission power including the modulated data to the target resonator, and to receive the reflected power; and a controller to control the pulse signal-type data, and to control impedance matching between the source resonator and the target resonator, wherein the demodulating unit comprises; a low-pass filter configured to block a harmonic signal from the detected reflected power. - View Dependent Claims (2, 3, 4, 5)
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6. An in-band data communication apparatus using a wireless power, the apparatus comprising:
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a target resonance unit configured to transmit reflected power to a source resonator, and to receive reception power including data; a modulating unit configured to control a variance of the reflected power by adjusting an impedance of a target device, so as to modulate data; a demodulating unit configured to detect an envelope of the reception power, and to demodulate the received data included in the reception power by comparing the detected envelope and a predetermined reference value; and a controller configured to provide an adjustment signal for the impedance of the target device and the predetermined reference value, and to perform impedance matching between a target resonator and a load, wherein the demodulating unit comprises; a low-pass filter configured to block a harmonic signal from the reception power. - View Dependent Claims (7, 8, 9, 10, 11)
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12. An in-band data communication method using a wireless power, the method comprising:
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modulating a pulse signal-type data by mixing a predetermined signal and the pulse signal-type data; transmitting a transmission power including the modulated data to a target resonator, and receiving reflected power; detecting the reflected power generated due to impedance mismatching between a source resonator and the target resonator, and demodulating received data based on a variance of the reflected power, wherein the received data is modulated using a variance of the reflected power by the target resonator; and providing the pulse signal-type data, and controlling impedance matching between the source resonator and the target resonator, wherein the demodulating comprises; blocking a harmonic signal from the detected reflected power by a low-pass filter. - View Dependent Claims (13, 14, 15)
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16. An in-band data communication method using a wireless power, the method comprising:
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modulating data by controlling a variance of reflected power through adjusting an impedance of a target device; transmitting the reflected power to a source resonator, and receiving a reception power including data; detecting an envelope of the reception power, and demodulating the received data included in the reception power by comparing the detected envelope and a predetermined reference value; and providing an adjustment signal of the impedance of the target device and the predetermined reference value, and controlling impedance matching between a target resonator and a load, wherein the demodulating comprises; blocking a harmonic signal from the reception power by a low-pass filter. - View Dependent Claims (17, 18, 19)
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Specification