Abstract:
PURPOSE: A local area network, a wireless power transmission system, and a method thereof are provided to simultaneously perform a local area network and wireless power transmission and perform the transmission of information and power. CONSTITUTION: A transmission unit (100) allocates power. The transmission unit encodes and modulates transmission information. The transmission unit transmits a transmission signal and power through the mutual induction property of a magnetic field to at least one coil antenna. A receiver (150) receives the transmission signal and the power to at least one second coil antenna. The receiver stores the power. The receiver restores the transmission information by demodulating and decoding the transmission signal. [Reference numerals] (105,175) Control unit; (110) Encoder; (115) Modulation unit; (125) Power supply unit; (160) Power storage unit; (165) Demodulation unit; (170) Decoder
Abstract:
PURPOSE: A wireless power transmission system and a method using frequency splitting properties are provided to transmit power using a tracked frequency, thereby compensating transmission efficiency deterioration due to frequency splitting. CONSTITUTION: A wireless power transmission method using frequency splitting properties is as follows: A transmitting system transmits power to a receiving system using a natural resonant frequency(S100).; The receiving system transmits a coefficient value to the transmitting system(S110).; The transmitting system calculates the value of splitting frequency, and then transmits the power to the receiving system(S120).; The transmitting system receives an verification signal from the receiving system(S130).; The transmitting system is capable of changing the splitting frequency as much as one prescribed unit(S140).; The transmitting system transmits the power using the changed frequency(S150).; The transmitting system is capable of selecting a frequency of which the transmission efficiency is better than other frequencies(S160).; The transmitting system uses the frequency which is changed again(S170). [Reference numerals] (S100) Transmitting power to ω_0; (S110) Receiving k value; (S120) Transmitting with a frequency of ±ωok/2; (S130) Receiving ack signal; (S140) Changing the frequency by a predetermined unit; (S150) Transmitting power with the changed frequency; (S160) Receiving control information; (S170) Changing the frequency according to the control information
Abstract:
자기장 통신을 위한 신호전송 방법, 송신코일장치, 수신코일 장치, 및 자기장 통신 시스템이 개시된다.상기 자기장 통신을 위한 신호 전송방법은 제1송신코일장치 및 제2송신코일장치가 제1시간 슬롯(slot)에서 각각 제1송신신호 및 제2송신신호를 수신코일장치로 출력하는 단계 및 상기 제1송신코일장치 및 상기 제2송신코일장치가 제2시간 슬롯에서 각각 상기 제2송신신호에 기초한 제3송신신호 및 제1송신신호에 기초한 제4송신신호를 상기 수신코일장치로 출력하는 단계를 포함하며, 상기 수신코일장치는 제1시간 슬롯에서 출력된 신호들에 의해 수신된 제1수신신호와 상기 제2시간 슬롯에서 출력된 신호들에 의해 수신된 제2수신신호에 기초하여 상기 제1송신신호 또는 상기 제2송신신호 중 적어도 하나를 계산할 수 있다.
Abstract:
PURPOSE: A transmission signal transmission method for magnetic field communication, transmission coil apparatus, reception coil apparatus, and magnetic field communication system are provided to increase transmission and reception rates regardless of the location conversion of a reception coil apparatus. CONSTITUTION: A first transmission coil apparatus(110) and a second transmission coil apparatus(120) outputs a first transmission signal and a second transmission signal to a reception coil apparatus(130). The first transmission coil apparatus and the second transmission apparatus outputs a third transmission signal based on the second transmission signal and a fourth transmission signal based on the first transmission signal to the reception coil apparatus.
Abstract:
본발명에따르면, 다수의안테나를구비하는신호전송장치에서전체안테나의방사패턴을기반으로신호의전송에적합한안테나조합을선택하고선택된안테나조합에따라형성되는방사패턴을통해신호를송신함으로써전송할수 있는신호의심볼의수가증가하여신호의전송용량을높일수 있으며, 또한, 안테나마다서로다른방사패턴을사용함으로써안테나들을공간적으로이격시키지않아도되어소형화가가능하다.
Abstract:
주파수 스플리팅 특성을 이용한 무선전력 전송시스템 및 그 방법이 개시된다. 상기 주파수 스플리팅 특성을 이용한 무선전력 전송시스템은 소정의 주파수를 사용하여 수신시스템으로 무선전력 전송을 수행하기 위한 송신 장치 및 상기 송신장치가 사용하는 주파수를 제어할 수 있는 컨트롤러를 포함하며, 상기 컨트롤러는 주파수 스플리팅(splitting)이 발생하는 경우, 고유 공진 주파수에 기초하여 계산되는 스플리팅 주파수를 이용하여 상기 송신장치가 사용할 주파수를 트래킹(tracking) 하고, 트래킹 결과 결정된 결정 주파수로 전력을 전송하도록 상기 송신장치를 제어할 수 있다.
Abstract:
PURPOSE: A power control apparatus and a method thereof are provided to perform the power control of wireless power transmission efficiency by securing necessary magnetic field communication capacity. CONSTITUTION: A transmission unit (100) performs power allocation when the efficiency of wireless power transmission is maximized. The transmission unit encodes and modulates transmission information. The transmission unit transmits a transmission signal and a transmission power. A reception unit (150) receives the transmission signal and the transmission power to a coil antenna. The reception unit stores the power. The reception unit restores the transmission information by modulating and decoding the transmission signal. [Reference numerals] (105,175) Control unit; (110) Encoder; (115) Modulation unit; (125) Power supply unit; (160) Power storage unit; (165) Demodulation unit; (170) Decoder
Abstract:
본발명에따르면, 다수의안테나를구비하는신호전송장치에서전체안테나의방사패턴을기반으로신호의전송에적합한안테나조합을선택하고선택된안테나조합에따라형성되는방사패턴을통해신호를송신함으로써전송할수 있는신호의심볼의수가증가하여신호의전송용량을높일수 있으며, 또한, 안테나마다서로다른방사패턴을사용함으로써안테나들을공간적으로이격시키지않아도되어소형화가가능하다.
Abstract:
PURPOSE: A magnetic field communication system and a method thereof are provided to increase the capacity of communication by controlling the power of a transmission system in magnetic field communication. CONSTITUTION: A transmission circuit(120) communicates with a reception system(200) through magnetic field communication. A control unit(110) controls the power of the transmission circuit. The control unit determines power for being individually allocated to sub-channels. The control unit determines power individually allocated to the sub-channel based on a difference between a sub-channel frequency and a resonant frequency corresponding to each sub-channel. [Reference numerals] (110) Control unit