Abstract:
A data receiving/transmitting method for saving power in a wireless personal area network is provided to minimize power consumption of a device by adjusting a beacon interval and a channel time with certain register information and beacon information. A data receiving/transmitting method for saving power in a wireless personal area network includes the steps of: determining an awake beacon cycle by power management setting, and setting a power management related register; waking right before starting beacon transmission based on a wake beacon interval register, and checking whether the current received beacon is identical with a beacon preset in a next wake beacon number register(103); checking an address of destination of CTA(Channel Time Allocation) if the beacons are identical with each other in the previous step, and receiving a data frame if the address corresponds to a channel time for receiving data(105,106); and checking an address of a starting point of the CTA, checking data queue information register information if the address corresponds to the channel time for receiving data, and transmitting the data frame during the CTA if an effective transmission frame exists(107,108,109,110).
Abstract:
A home service fault management method in a digital home service system and a system therefor are provided to collect and analyze fault information to help fault diagnosis, and to extract related fault statistical data from operation statistical data as quickly coping with similar faults by reusing fault records, thereby conducting more accurate fault management. When a request for fault reception information is received from a manager, a fault gateway information extractor(110) extracts information on a user and fault gateway information on a home gateway from which a fault is generated. A statistical information analyzer(130) extracts pre-stored statistical information by using the fault gateway information, and analyzes the extracted information. A fault information analyzer(120) collects fault information on a condition that the home gateway from which the fault is generated is normal, and transmits the collected information to the manager. A fault processor(140) registers fault management information and a determined fault type from the manager according to the fault gateway information, the statistical information, and the fault information, and manages fault records by storing the corresponding fault details.
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 전자적 지불 시스템을 이용한 원격 홈 디바이스 인증/등록 장치 및 그 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은 홈 디바이스 인증을 위해 별도의 하드웨어 정보(기기정보)를 홈 네트워크에 등록하지 않아도, 사용자가 홈 디바이스를 구매하는 과정에서(구매 시점에) 금융기관(혹은 지불대행기관)의 인증 과정을 거쳐, 사용자가 구매한 홈 디바이스의 정보(디바이스 인증정보)를 홈 서버의 인증 목록에 자동으로 등록시키기 위한 원격 홈 디바이스 인증/등록 장치 및 그 방법을 제공하는데 그 목적이 있음. 3. 발명의 해결방법의 요지 본 발명은, 홈 디바이스 인증/등록 장치에 있어서, 각 가입자의 개인정보를 등록, 저장하고 있는 가입자 정보 저장수단; 홈 디바이스 구매자의 상품 구매시 상점 서버로부터의 전자지불 요청에 따라, 해당 가입자의 개인정보를 바탕으로 결제정보를 생성하여 상기 상점 서버로 전송하는 결제정보 생성수단; 구매한 홈 디바이스의 상품정보와 상기 해당 가입자의 개인정보를 이용하여 디바이스 인증정보를 생성하기 위한 디바이스 인증정보 생성수단; 및 상기 디바이스 인증정보를 해당 가입자의 홈 네트워크로 전송하여, 댁내 접근 가능한 디바이스 목록에 구매한 홈 디바이스의 정보(디바이스 인증정보)를 자동 등록하기 위한 디바이스 인증정보 등록수 단을 포함한다. 4. 발명의 중요한 용도 본 발명은 홈 디바이스 등록 등에 이용됨. 홈 디바이스, 디바이스 인증정보, 전자 지불, 상품정보, 신용카드
Abstract:
A wireless USB(Universal Serial Bus) device and a power management method thereof are provided to receive self-power and power through a bus power mode by installing a solar cell, and minimize power consumption by using an idle state and a power controller. A main body(210) attaches the solar cell for supplying the power at the outside and is embedded with a charging storage for supplying the power in case that the power is turned off. The power controller(220) reduces the power consumption by controlling connection and disconnection with a wireless USB host. A USB plug(230) directly connects with the wireless USB host. A self-power port(240) supplies the power in the case that the power is not supplied from the solar cell and a bus power supply.
Abstract:
본 발명은 반원 확장을 이용한 UWB(Ultra-WideBand) 슬롯 안테나에 관한 것으로서, 이득 변화량(gain variation)을 결정하는 반원 확장, 전류의 흐름을 원활하게 하는 사다리꼴 모양의 패치, 광대역을 위한 사각 슬롯, 광대역 임피던스 정합을 위한 스터브(stub)로 구성되어, 초소형이여 이동성이 용이하며, UWB 시스템이 요구하는 주파수 대역폭(3.1∼10.6㎓)를 만족하고 있다. 또한, 모든 방향으로 방사되는 전방향성 패턴(omni-directional pattern)을 가지며, 이로 인해 원거리장(far-field)의 위상이 선형인 평탄한 2dBi 이하의 이득 변화량을 갖는다. 그리고, 안테나의 제작비용이 저렴하다는 장점이 있다. UWB 안테나(ultra-wideband antenna), 반원 확장(semi-circular extension), 슬롯 안테나(slot antenna), CPW(coplanar waveguide), 스터브(stub), 광대역 정합
Abstract:
본 발명은 병렬 처리 구조의 DS-CDMA UWB 시스템에서의 초기 동기 획득 장치 및 방법과 이를 이용한 DS-CDMA UWB 시스템에서의 수신기에 관한 것으로서, 입력되는 신호를 상관 검출 연산하여 상관검출 결과값을 출력하는 상관 검출기와, 상관 검출기로부터 출력되는 상관검출 결과값을 입력받아 초기 심볼 동기 및 프레임 동기를 맞춘 후 결합 부호값과 동기 위치값을 레지스터에 저장하는 초기 동기화기로 구성되어, CDMA 전송 시스템에서 패킷 동기와 심볼 동기를 맞추기 위해 각각의 모듈을 설계하여 시스템을 구현하는 복잡도가 훨씬 간편해지며, 송수신부에 설계된 클럭간에 발생하는 주파수 옵셋에 의한 동기오차도 추가적으로 보상함으로써, 고속의 병렬처리를 필요로 하는 DS-CDMA UWB 시스템에 매우 효율적으로 적용할 수 있다. DS-CDMA UWB 시스템, 동기 획득 시스템, 상관 검출기, 동기화 판별기
Abstract:
An inter-piconet data relay apparatus in a WPAN(Wireless Personal Area Network) and a method thereof are provided to increase the efficiency of resources between piconets by making a device, existing in an area where a plurality of piconets are overlapped, provide an inter-piconet multi-hop communication function, without any communication interference, by using a power management mode in a WPAN environment. An inter-piconet data relay apparatus(500), installed at a bridge device, comprises a piconet association part(51), a super frame synchronization part(52), a DSPS(Device Synchronized Power Save) set setup part(53), a piconet information guide part(56), a relay data storage part(54), and a data relay part(55). The piconet association part(51), based on beacon information that the bridge device receives through channel scanning, confirms that a plurality of piconets exist at each of different channels, and executes an association procedure through a corresponding channel of each piconet. The super frame synchronization part(52) executes inter-piconet super frame synchronization through a piconet parameter change procedure. The DSPS set setup part(53) creates a DSPS set corresponding to the optimum power-saving cycle by using a power-saving mode. The piconet information guide part(56) supplies a piconet IE(Information Element), or information about other piconets capable of relaying data and information about devices included in the piconets, to devices of each piconet. The relay data storage part(54) receives and stores the data to be relayed from devices of each piconet to other piconets in a super frame corresponding to the WB(Wake Beacon) cycle of each piconet. The data relay part(55) transmits relay data, stored in the relay data storage part(54), through an allocated channel in a multi-hop method according to the WB cycle of a corresponding piconet.
Abstract:
A wideband variable gain amplifier is provided to have low distortion and high linearity by performing stable current supply using a bleeding current. In a wideband variable gain amplifier, a transconductance conversion unit(21) controls a gain of a differential input signal by controlling the amplitude of transconductance according to a gain control signal. A load resistor stage(22,23) converts a current type differential signal outputted from the transconductance conversion unit into a voltage type differential signal. An output DC voltage comparison unit(24) detects a DC current of the differential signal converted in the load resistor stage, and sets a bias voltage by comparing the DC voltage with a reference DC voltage. A bleeding current generation unit(25) determines the intensity of a bleeding current according to a bias voltage set in the output DC voltage comparison unit, and supplies the corresponding bleeding current to the transconductance conversion unit.
Abstract:
A home appliance controlling device, a home appliance controlling system, and a method thereof are provided to determine whether to control home appliances by using a lot of sensing information, and to notify a user of the results or to automatically control the corresponding home appliances. A wireless sensor node unit(100) senses living spaces and states around the living spaces, and transmits sensing information to a home appliance controller(200). The home appliance controller(200) collects the sensing information delivered from the node unit(100), and determines a home appliance to be controlled and a controlled operation of the home appliance on the basis of the sensing information and pre-stored control information, then provides the results to a user or delivers a control signal to the corresponding home appliance.