Abstract:
서로 수직교차하도록 배치된 두 개의 송신 안테나를 이용하여 무선 에너지를 전송한다. 즉, 본 발명의 무선 전력 송신 장치는, 서로 수직으로 교차하도록 배치된 제1 및 제2 송신 안테나와, 상기 제1 및 제2 송신 안테나와 각각 연결되어 있으며, 상기 제1 및 제2 송신 안테나를 통해 각각 송신되는 무선 전력을 공급하기 위한 제1 및 제2 인버터 및 앰프를 포함하며, 상기 제1 및 제2 송신 안테나를 통해 송신되는 무선 전력의 위상차가 일정한 값을 갖도록 상기 제1 및 제2 인버터 및 앰프를 통해 공급되는 무선 전력의 위상을 조절할 수 있는 것을 특징으로 한다.본 발명에 따르면, 서로 수직교차하도록 배치된 두 개의 송신 안테나를 이용하여 특정 방향으로 자기 에너지를 집중시킬 수 있으므로 무선 전력 전송에 있어서 전송 거리와 전송 효율을 증가시킬 수 있으며, 이에 따라 동일한 전력을 송신하기 위한 부담이 하나의 Inverter 및 AMP와 송신 안테나를 갖는 무선 전력 전송 장치에 비해 상대적으로 감소한다. 또한, 두 개의 송신 안테나를 서로 수직으로 교차하도록 배치하고 두 송신 안테나로부터 전달되는 자기 에너지의 위상을 조절함으로써 음영 지역이 개선되고 원하는 다양한 형태의 자기 에너지 필드를 얻을 수 있게 된다.
Abstract:
An active energy repeater is provided. The active energy repeater comprises a transceiving antenna receiving power from a wireless power transmission device and transmitting the power to a wireless charging device; a relay antenna relaying the power received from the wireless power transmission device to the wireless charging device; a magnetic field communication modem performing magnetic field communication with the wireless charging device by using a magnetic field communication protocol; a control unit controlling transmission, reception, storage, and relay of the wireless power; and a battery charging the power received from the wireless power transmission device. The active energy repeater obtains information of the wireless charging device by communicating with the wireless charging device using a magnetic field communication. The active energy repeater reduces the energy use in time when the energy density and a user's magnetic energy exposure time is high by storing the power when the user density is low and retransmitting the energy to a device from the active energy repeater during the time when the user's density is high, thereby improving stability. The active energy repeater also reduces the burden of power control for each wireless charging device to perform integral control in the wireless power transmission device by having a communication function for the control. [Reference numerals] (AA) Passive repeater;(BB) Main areas where people are acting;(CC) Store night green energy;(DD) Energy transmitter;(EE) Active repeater
Abstract:
무선 전력 송신장치가 제공된다. 본 무선 전력 송신장치는, 무선으로 전력을 송신하는 무선 전력 송신 안테나, 무선 전력 송신 안테나의 전압 및 전류를 감지하는 센서부, 무선 전력 송신 안테나에 직렬 및 병렬로 연결되는 복수개의 캐패시터 및 복수의 캐패시터의 연결을 스위칭하는 복수개의 스위치를 포함하는 가변 캐패시터부 및 센서부에서 감지된 전압 및 전류를 이용하여 임피던스를 산출하고, 산출된 임피던스에 따라 상기 가변 캐패시터부의 캐패시턴스를 조절하는 제어부를 포함한다. 이에 따라, 수신기와의 거리 변화에 의한 임피던스 변화에 따라 캐패시턴스를 조절하여 임피던스 매칭을 수행할 수 있게 되어, 무선 전력 효율을 더욱 높일 수 있게 된다.
Abstract:
PURPOSE: A wireless power transmission system for wirelessly charging a plurality of devices is provided to control wireless power transmission to a plurality of devices, thereby improving the efficiency of the system. CONSTITUTION: A plurality of wireless chargers are prioritized. The priority data is sent to all the wireless chargers. Wireless power is sequentially transmitted to a plurality of the wireless chargers according to the priority. The current and voltage of a wireless power transmission device are detected. A first impedance matching is performed by the detection. [Reference numerals] (AA,CC) Power transmission device; (BB) Power recieving device; (DD,EE) Recognition/authentication; (FF,GG) Charging information request; (HH,II) Charging information response; (JJ) Charging preparing; (KK,LL) Wireless power transmission; (MM) Charging end; (NN,OO) Wireless power transmission end
Abstract:
PURPOSE: An execution method of firmware stored in an external device is provided to reduce power consumption by optimizing a system bus of a high-speed wireless modem using a USB(Universal Storage Bus) host interface. CONSTITUTION: The state of USB in which firmware is stored is determined(S504). When the firmware is stored in the USB, the USB is connected based on hardware(S510). The firmware stored in the USB is downloaded through a modem(S514). The error determination of the firmware stored in the USB is calculated in a host, and a checking result is transmitted to the modem(S518). The firmware stored in the modem is transmitted to an inner memory by comparing the calculated checking result with the received checking result(S522). The firmware stored in the inner memory is executed(S526). [Reference numerals] (AA) External non-volatile memory; (BB) Failure; (CC) Success; (S500) Power on; (S502) Inspect a boot mode; (S504) Inspect the location of firmware; (S506) Store a firmware image in an internal memory; (S508) Execute the firmware; (S510) Re-connect based on hardware; (S512) List on USB; (S514) Download firmware into a modem; (S516) Transmit control information; (S518) Calculate the checksum of the firmware stored in the USB; (S520) Calculate the checksum of the firmware stored in the modem; (S522) Store the firmware image in the internal memory; (S524) Terminate the connection of USB; (S526) Execute the firmware
Abstract:
인체통신을 이용한 감성추론장치의 생체신호 전송방법이 제공된다. 본 감성 추론 장치는, 센싱된 생체신호에서 감성 유발 생체신호를 추출하고 추출된 감성 유발 생체신호를 이용하여 사용자의 감성 상태 정보를 추론하며 추론된 감성 상태 정보를 인체 결합 통신(BCC : Body Coupled Communication)을 이용하여 외부기기로 전송한다. 이에 따라, 감성 추론 장치는 센싱된 감성 상태 정보를 효율적으로 외부기기에 전송할 수 있게 된다.
Abstract:
PURPOSE: A symbol power computing device of a broadband modem receiver is provided to effectively calculates the symbol power of the broadband modem receiver using a simple hardware configuration. CONSTITUTION: A buffer array(100) consists of a buffer of N+1. Squarers(120,130) of the front and backend are respectively connected with the most front end buffer(100f) and most backend buffer(100b) among the buffer array and respectively square the output of the corresponding buffer. An adder(140) adds a current output and a just before output of the front squarer. The adder takes output of the backend squarer. A accumulation delayed buffer(110) accumulates the output of the adder. An initialization part(150) initializes each buffer belonging to the buffer array and the accumulation delayed buffer whenever a sample of N+1 is inputted from each frame start of a received signal.
Abstract:
PURPOSE: A high speed wide band modem with an internal data verifying function is provided to verify the design result by dumping the final result of a baseband digital data. CONSTITUTION: An internal memory(200) stores baseband digital data to be OFDM modulated or to be OFDM demodulated. A multiplexer for selecting data(150) transfers the program data or the baseband digital data to an inner memory. A multiplexer for selecting modulation or demodulation selectively transfers the OFDM modulated baseband digital data or the baseband digital data to be demodulated to the multiplexer for selecting data. A control means controls the multiplexer for selecting data and the multiplexer for selecting modulation or demodulation.
Abstract:
PURPOSE: An apparatus and a method for compensation of a frequency offset on an OFDM system are provided to simplify a hardware size, a circuit structure, and an algorithm by supporting a fine frequency offset compensation and a parallel processing. CONSTITUTION: In a apparatus and a method for compensation of a frequency offset on an OFDM system, a broad offset estimating unit(310) estimates more than two broad sampling frequency offsets of plurality of subcarriers which are orthogonal with each other. Subcarriers are successively numbered, and the broad sampling frequency offset is a sampling frequency offset between the subcarriers which are predetermined interval. An average operation unit(320) averages 6 presumed broad sampling frequency offsets. The average operation unit includes an adder computing the total of 6 broad sampling frequency offsets and it computes the average of the broad sampling frequency offset by dividing the total outputted from the adder by the number of the broad sampling frequency offset.