baber/WOPTO huggingface dataset:
Patent KR-20090036594-A (KR)
Title: Fuel cell system and method of diagnosing on-off valve
Inventor: KATANO KOJI
IPC: G01M99/00
Filed: 2007-07-06
Abstract: A fuel cell system having a fuel cell, a fuel supply flow path for causing fuel gas supplied from a fuel supply source to flow to the fuel cell, an on-off valve for regulating the state of gas on the upstream side of the fuel supply path to supply it to the downstream side, failure detection means for detecting whether the on-off valve has a closure failure, a pressure sensor for detecting the pressure value of fuel gas on the upstream side of the on-off valve, and determination condition setting means for setting, based on the pressure detected by the pressure sensor, the conditions of determination of a closure failure of the on-off valve. The failure detection means determines, based on the closure failure determination conditions set by the determination condition setting means, whether the on-off valve has a closure failure.
Patent KR-20090051054-A (KR)
Inventor: ARAMAKI KEISUKE
IPC: H01F1/44
Filed: 2007-04-05
Abstract: 자성 시트를 제조하는 데에 있어서는, 적어도 편평한 연자성 분말과 용매에 용해시킨 고분자 결합제를 혼합하여 제작된 자성 도료를 소정의 기재 상에 도포한 후에 건조시켜, 자성 시트를 형성한다.     그리고, 건조시켜 형성한 자성 시트 상에 추가로 자성 도료를 도포하여 건조시킨다.     이로써, 매우 고품질의 자성 시트를 고생산성 하에서 제조할 수 있다.
Patent KR-20090057977-A (KR)
Title: Closure and container package with rfid circuit
Inventor: MEYER TOOD W
IPC: B65D55/02
Filed: 2007-07-16
Abstract: A tamper-indicating closure includes a closure shell having a skirt (30) for securing the closure to a container neck finish and a tamper band (36) frangibly coupled to the skirt for separation from the skirt upon first removal of the closure from the container. An RFID circuit (44), including an RFDD tag (46) and an antenna (48), is carried by the tamper band for separation from the skirt with the tamper band and remaining operational on the container after the closure has been removed from the container. The RFID circuit preferably is carried by a stop flange (40) that extends from the tamper band and disposed between the stop flange and the tamper band.
Patent KR-20090039836-A (KR)
Title: 2-(heterocyclylbenzyl)pyridazinone derivatives
Inventor: DORSCH DIETER
IPC: C07D417/14
Filed: 2007-07-12
Abstract: Compounds of the formula (I) in which R1, R2, R3, R4 and R5 have the meanings indicated in claim 1 are inhibitors of tyrosine kinases, in particular of met kinase and can be employed inter alia for the treatment of tumours.
Patent KR-20090039850-A (KR)
Title: Ice making system and system for de-icing a refrigerator
Inventor: PETRENKO VICTOR
IPC: F28F17/00
Filed: 2005-06-22
Abstract: A pulse electrothermal de-icing ("PETD") system for detaching ice includes a power supply (22) for applying a high-power heating pulse to the interface between ice and an object such as a cold plate of an ice making system, an ice-container, a heat-exchanger, a refrigerator surface or an airplane wing. Pulse heating may be generated within a metal foil or resistive film disposed upon an object to be deiced, or a capillary tube proximate the object to be deiced. An interfacial layer of ice is melted and the ice is released from the object. A force, for example gravity, pressure of vaporization or mechanical scraping, removes the ice from the object.
Patent KR-20090075823-A (KR)
Title: Glass-ceramic plate and its manufacturing process
Inventor: VILATO PABLO
IPC: C03C17/23
Filed: 2007-10-15
Abstract: The present invention relates to a glass-ceramic plate, intended for example to cover or accommodate at least one heating element, in particular intended to serve as a hob, said plate being at least partly coated with at least one nanoscale layer based on a metallic material having a refractive index greater than that of the glass-ceramic. The invention also relates to the process for manufacturing the plate, to the screen-printable composition deposited on the plate, and to the cooking appliance comprising said plate.
Patent KR-20090086949-A (KR)
Title: Grease composition for use in constant velocity joints comprising at least two different molybdenum compounds
Inventor: JISHENG E
IPC: C10N50/10
Filed: 2006-10-07
Abstract: In order to provide for a grease composition reducing or preventing noise, vibration and harshness (NVH) in the driveline, a grease composition for use in constant velocity joints is suggested, comprising a) a base oil composition; b) at least one tri-nuclear molybdenum compound of the formula Mo3SkLnQ2, wherein L are independently selected ligands having organo groups with a sufficient number of carbon atoms to render the compound soluble or dis-persible in the oil, n is from 1 to 4, k varies from 4 though 7, Q is selected from the group of neutral electron donating compounds such as amines, al-cohols, phosphines, and ethers, and z ranges from 0 to 5 and includes non-stoichiometric values. c) at least one further molybdenum containing compound; and d) at least one simple and/or complex soap thickener. ® KIPO & WIPO 2009
Patent KR-20090078347-A (KR)
Title: Hcv nucleoside inhibitor
Inventor: JOHANSSON NILS GUNNAR
IPC: A61P31/12
Filed: 2007-10-04
Abstract: 4-Amino-1-((2R,3S,4S,5R)-5-azido-4hydroxy-5-hydroxymethyl-3-methyl-tetrahyclrofuran-2-yl)-1 H-pyrimidin-2-one(22) are hepatitis C (HCV) polymerase inhibitors. Also disclosed are compositions and methods for inhibiting HCV and treating HCV-mediated diseases, processes for making the compounds and synthetic intermediates employed in the process.
Patent KR-20090073231-A (KR)
Title: Crystal modifications of 3-(1h-indol-3-yl)-4-[2-(4-methyl-piperazin-1-yl)-quinazolin-4-yl]-pyrrole-2,5-dione
Inventor: KARPINSKI PIOTR
IPC: A61P37/00
Filed: 2007-10-18
Abstract: The invention relates to a new crystalline form of the acetate salt of, 3-(1.H.-indol-3-yl)-4-[2-(4-methyl-piperazin-1-yl)-quinazolin-4-yl]-pyrrole-2,5-dione, which may be used for example for transplantation.
Patent KR-20090100340-A (KR)
Title: Herbicide composition
Inventor: YAMAJI YOSHIHIRO
IPC: A01N33/18
Filed: 2007-12-20
Abstract: Disclosed is a herbicide composition comprising an isoxazoline derivative or a salt thereof, which is highly safe to a useful crop, and which can control various weeds that may cause troubles in a paddy, an agricultural field, a cropland or the like at any stage falling within a wide weed growth range from a pre-germination stage to a growing stage. Specifically disclosed is a herbicide composition which comprises a [component A] comprising at least one compound selected from the group consisting of an isoxazoline derivative represented by the formula [I] and a salt thereof and a [component B] shown below as active ingredients. [Component A] [I] [wherein R1 and R2 independently represent a hydrogen atom, a C1-C10 alkyl group, a C3-C8 cycloalkyl group or a C3-C8 cycloalkyl-C1-C3 alkyl group, and R3 and R4 independently represent a hydrogen atom, a C1-C10 alkyl group or a C3-C8 cycloalkyl group, provided that R1, R2, R3 and R4, together with a carbon atom to which these groups is bound, may form a 5-to 8-membered ring; R5 and R6 independently represent a hydrogen atom or a C1-C10 alkyl group; Y represents a 5-to 6-membered aromatic heterocyclic group or aromatic hetero fused ring group having one heteroatom selected from the group consisting of a nitrogen atom, an oxygen atom and a sulfur atom; and n represents an integer of 0 to 2.] [Component B] Imazaquin, diuron, sulfentrazone, sulcotrione, norflurazon, clomazone, or dimethenamid-P, prosulfocarb, isoproturon, trifluralin or triallate.
Patent KR-20090086628-A (KR)
Title: Automatic localization of devices
Inventor: HODGES STEPHEN
IPC: H04W4/02
Filed: 2007-12-04
Abstract: A device is described which changes its operation dependent upon the location of the device. The device accesses parameters which are specific to its location and uses these to determine how the operation of the device should be changed. ® KIPO & WIPO 2009
Patent KR-20090115169-A (KR)
Title: Horizontal axis washing machine having 4 pole 36 slot motor
Inventor: HOEMANN KEITH I
IPC: D06F29/00
Filed: 2008-01-29
Abstract: A horizontal axis washing machine includes a clothing receptacle rotated by a 4 pole rotor. A 36 slot stator having an interior bore with an interior diameter receives the 4 pole rotor in magnetic coupling relation and capable of operating within a flux weakening range of at least 5:1. The stator has a ratio of an interior diameter to a minimum exterior diameter greater than or equal to 0.63:1.
Patent KR-20090122963-A (KR)
Title: Method and apparatus for creating rammed aggregate piers using a hollow mandrel with upward flow restrictors
Inventor: WISSMANN KORD J
IPC: E02D3/08
Filed: 2008-02-22
Abstract: A system and method for installing aggregate piers is provided. A cylindrical hollow mandrel is driven to a desired depth. Aggregate is fed through the mandrel in steps. The mandrel is raised and driven to tamp the aggregate. Physical members in a tamping head of the mandrel allow aggregate to remain in a cavity formed by the mandrel, and prevent aggregate from entering the mandrel during driving.
Patent KR-20100017188-A (KR)
Title: Microorganism for the production of succinic acid
Inventor: LANG CHRISTINE
IPC: C12P7/46
Filed: 2008-04-16
Abstract: The invention relates to an isolated genetically modified microorganism in which the gene IDH1 and at least one of the genes SDH2 and DIC1 are under the control of a first promoter that is repressed to a growth culture medium by means of a cultivation additive and is active in the absence of the cultivation additive. The genes that are part of the group comprising ''PYC1, ACS1, CIT1, ACO1, ICL1, MSL1, and CIT2, optionally also MDH3'' are constitutively active. The invention further relates to uses of such a microorganism, especially for producing succinic acid.
Patent KR-20100017486-A (KR)
Title: Receiving element for an implant
Inventor: GUENTER DANIEL
IPC: A61C19/02
Filed: 2008-06-05
Abstract: The present invention relates to a receiving element (1) for a dental implant, comprising a first plate (3) and a second plate (6), extending perpendicular to the center axis (Z) of the receiving element (1) and designed to detachably fixate a dental implant in a stable position, wherein the plates (3, 6) are separated by an open region (5).
Patent KR-20100029756-A (KR)
Title: Method and device for cleaning of a fluid in a centrifugal separator
Inventor: RIDDERSTRALE ROLF
IPC: B04B1/08
Filed: 2008-05-09
Abstract: A method for purifying a fluid from contaminating particles in a centrifugal separator by means of a separation aid which is of higher density than the fluid and which binds said particles, in which the centrifugal separator comprises a rotor body (1) caused to rotate about an axis of rotation (R), the fluid which is to be purified is led via an inlet (17) into a separation chamber (7) delimited by the rotor body (1), separated particles are discharged via a first outlet (25) and the fluid cleared of said particles is discharged via a second outlet (22), said fluid being mixed with an amount of separation aid, being supplied to the separation chamber (7) and being purified therein by the pollutant particles being bound to said separation aid, which separation aid is forced out by the rotation of the rotor body (1) to the periphery of the rotor body (1), a small flow of separation aid and particles bound thereto being discharged from the separation chamber (7) via the first outlet (25), and a flow of purified fluid being discharged from the separation chamber (7) via the second outlet (22), said separation aid and particles bound to it being conveyed along the inside of the rotor body by at least one conveying thread (16) towards and out through the first outlet (25).
Patent KR-20110082331-A (KR)
Title: A film probe
Inventor: LEE SANG ROH
IPC: G01R3/00
Filed: 2010-01-11
Abstract: PURPOSE: A film probe is provided to laminate a probe by a plating method, thereby preventing deformation of the probe due to contact with an LCD and a strong external impact. CONSTITUTION: An insulating film is prepared(S101). A first sacrificial layer or an adhesive layer is formed on one side of a handling substrate(S102). The handling substrate is attached to the insulating film(S103). A second sacrificial layer is formed on one side of the insulating film(S111). A UV is irradiated to the second sacrificial layer(S112). An impact absorbing metal layer is formed on the insulating film(S113). A wire metal layer is formed on the impact absorbing metal layer(S114). The second sacrificial layer, the impact absorbing metal layer, and the wire metal layer are etched to form a metal pattern(S120).
Patent KR-20110089617-A (KR)
Title: Immersion solution for powder core, method for immersing powder core by the same and powder core
Inventor: KIM SON KWON
IPC: B22F3/26
Filed: 2010-02-01
Abstract: PURPOSE: Powder core, immersion solution and method of the powder core are provided to protect environment since there is no need for a washing process using organic solvent corresponding to a post process. CONSTITUTION: An immersion method of powder core is as follows. Immersion solution is manufactured(S11). The powder core is positioned in a vacuum tank(S12). The immersion solution is injected into the vacuum tank and immerses the powder core(S13). The immersion solution is injected into the surface gap of the powder core by applying of pressure(S14). The immersion solution is removed from the vacuum tank and the powder core is washed(S15). The immersion solution immersed in the powder core is cured(S16).
Patent KR-20110091294-A (KR)
Title: Automatic loanword-to-korean transliteration method and apparatus
Inventor: RIM HAE CHANG
IPC: G06F17/28
Filed: 2010-02-05
Abstract: PURPOSE: An automatic loanword-to-Korean transliteration apparatus and a method for the same are provided to implement a strong point to a new word or a rarely used word. CONSTITUTION: A notation regulation is created according to each phoneme comprising a foreign language. A conversion object word is partitioned into phonemic units(S22). The notation regulation is extracted from a plurality of phonemic unit(S26). The notation information is created by the phoneme expression regulation by the extracted unit(S27).
Patent KR-20110098251-A (KR)
Inventor: KO JAE BUM
IPC: G11C8/04
Filed: 2010-02-26
Abstract: 본 발명은 제 1 입력 제어 신호에 응답하여 클럭을 제 1 제어 클럭으로서 입력 받아 외부 어드레스를 상기 제 1 제어 클럭의 설정된 주기가 경과하면 제 1 지연 어드레스로서 출력하는 제어 클럭 지연부, 제 2 입력 제어 신호에 응답하여 상기 클럭을 제 2 제어 클럭으로서 입력 받고, 상기 제 1 입력 제어 신호에 응답하여 상기 외부 어드레스를 입력 받을지 상기 제 1 지연 어드레스를 입력 받을지를 선택하며, 상기 제 2 제어 클럭의 설정된 주기가 경과하면 선택된 어드레스를 제 2 지연 어드레스로서 출력하는 제어 클럭 입력 선택 지연부, 및 상기 클럭을 입력 받고, 상기 제 2 입력 제어 신호에 응답하여 상기 외부 어드레스를 입력 받을지 상기 제 2 지연 어드레스를 입력 받을지를 선택하며, 선택된 어드레스를 상기 클럭의 설정된 주기가 경과하면 내부 어드레스로서 출력하되, 상기 클럭의 설정된 주기가 출력 제어 신호에 응답하여 결정되는 제어 클럭 입출력 선택 지연부를 포함한다.
Patent KR-20110098515-A (KR)
Title: 비데용 노즐 어셈블리
Inventor: JIN SUNG WORL
IPC: E03D9/00
Filed: 2010-02-26
Abstract: 노즐이 곡선이동을 하는 비데용 노즐 어셈블리를 개시한다.  
본 발명에 따른 일실시예에 따른 비데용 노즐 어셈블리는 곡선을 이루는 이동가이드부재(200); 상기 이동가이드부재(200)에 이동가능하게 구비되며 물공급원으로부터 공급된 물이 인체의 국부에 분사될 수 있도록 구성된 노즐(300); 및 상기 노즐(300)이 상기 이동가이드부재(200)를 따라 이동되도록 상기 노즐(300)에 연결되어 상기 노즐(300)을 이동시키는 구동부(400); 를 포함하여 구성될 수 있다.  
상기와 같은 구성에 의해 본 발명은 인체의 국부에 물을 분사하여 세정하는 노즐이 곡선이동을 할 수 있으며, 이에 따라 작은 공간으로도 노즐이 이동될 수 있도록 할 수 있으며, 도기 일체형 비데의 경우에는 변기부에 낮은 홈을 형성시키거나 비데부의 높이를 낮출 수 있고, 도기 분리형 비데의 경우에는 비데본체의 높이를 낮출 수 있다.
Patent KR-20100043153-A (KR)
Inventor: LEE MYUNG KEUN
IPC: G06Q40/06
Filed: 2010-03-03
Abstract: PURPOSE: A recommendation item information providing system and a method thereof are provided to enable a personal investor to receive investment information form a selected investment expert through an SMS(Short Message Service), thereby increasing stability of stock investment. CONSTITUTION: Expert terminals(100) transmit recommendation information messages. An investment management server(200) transmits item recommendation short messages included in the recommendation information messages. The investment management server transmits the recommendation information messages. Mobile communication terminals(300) display the investment information short messages.
Patent KR-20100105482-A (KR)
Title: Multi-layered impedance matching structure for ultrasound probe
Inventor: CALISTI SERGE GERARD
IPC: G01N29/24
Filed: 2010-03-17
Abstract: PURPOSE: An acoustic laminate for an ultrasonic probe and a method for forming the junction layer structure of the acoustic laminate are provided to form N junction layer sections on a first junction layer section by alternately form spring layers and mass layers. CONSTITUTION: A plurality of junction layer sections(222, 224, 226, 228, 230) forms a junction layer structure(220). The junction layer sections include a plurality of spring layers(234, 236, 238, 240, 242) and a plurality of mass layers(244, 246, 248, 250, 252), respectively. A spring layer in a junction layer section which is adjacent to a piezoelectric layer(272) is thinner than other spring layers in the other junction layer section.
Patent KR-20110107993-A (KR)
Inventor: MOON CHEOL HONG
IPC: H04L12/28
Filed: 2010-03-26
Abstract: 본 발명은 지그비 통신을 이용하여 임베디드 시스템에서 제어하는 통합형 조명제어 시스템을 구현하고 엘이디의 디밍 기술을 바탕으로 감성조명을 구현할 수 있도록 한 지그비 네트워크를 이용한 엘이디 감성조명 제어시스템에 관한 것이다.  
이를 위하여, 본 발명은 엘이디가 바 형태로 기판상에 실장된 엘이디 조명 보드와, 상기 엘이디 조명 보드를 구동 제어하기 위한 조명제어부와, 상기 조명제어부와 상기 엘이디 조명 보드 간에 통신 가능하도록 지그비 모듈이 구비된 제어시스템에 있어서, 엘이디 조명 보드와 지그비 모듈을 하나로 묶어 복수의 엘이디 조명 노드를 구성하고 조명제어부와 지그비 모듈을 하나로 묶어 베이스 노드를 구성하되, 복수의 엘이디 조명 노드는 지그비 통신을 통해 메쉬 망으로 연결하여 베이스 노드에서 모든 엘이디 조명 노드를 일괄적으로 제어할 수 있도록 무한 루프 방지용 시퀀스 번호를 부여하고 데이터가 무한대로 포워딩되지 않도록 TTL(Time-To-Live)값을 설정하여 플러딩(Flooding) 알고리즘을 적용하여 구성됨을 특징으로 한다.
Patent KR-20110112059-A (KR)
Inventor: GIM JAE SEON
IPC: F24D19/10
Filed: 2010-04-06
Abstract: 본 발명은 계량기를 통과하여 흐르는 유량을 검출하여 온도조절및제어기에 인가하고, 미리 설정된 기준값과 비교하여 밸브구동기를 조절함으로써 유량을 제어할 수 있도록 하는 난방용 온도조절 시스템 및 그 방법에 관한 것이다.  
본 발명에 따른 난방용 온도조절 시스템 및 그 방법은, 밸브를 개폐하여 실내 난방 배관에 흐르는 유량을 제어하는 밸브구동기; 상기 실내 난방 배관을 흐르는 유량을 표시하는 계량기 및 계량표시부; 상기 계량기를 통과하여 흐르는 유량을 검출하여 온도조절및제어기에 인가하는 유량검출부; 사용자의 설정에 따라 실내 온도 및 유량을 조절하되, 상기 유량검출부로부터 인가된 유량값을 미리 설정된 기준값과 비교하여 상기 밸브구동기를 조절하여 유량을 제어하는 온도조절및제어기를 포함하는 것을 특징으로 한다.  
따라서, 계량기에 흘러가는 유량신호를 실내의 온도조절및제어기로 인가되도록 하여 사용자는 온도조절 및 제어기의 노브를 돌려 실내의 온도설정은 물론 정유량을 함께 조절할 수 있게 하여 종래와 같이 정유량밸브를 설치해야 되는 문제점이 없으며, 실내의 사정에 맞도록 자유롭게 유량 조절이 가능하여 에너지를 절감 효율을 향상시킬 수 있는 효과가 있다.
Patent KR-20110120164-A (KR)
Title: Flying foam apparatus for an event
Inventor: KANG SUNG WOOK
IPC: G09F21/06
Filed: 2010-04-28
Abstract: PURPOSE: A flying bubble shape generating apparatus is provided to prevent the concentration decline of aqueous solution and to form the density of bubble shape small. CONSTITUTION: A flying bubble shape generating apparatus comprises a cylinder main body, a plurality of bubble elevators, a bubble shape forming part, temperature controller, and a main power input terminal(26). The cylinder main body stores aqueous solution. The cylinder main body forms a drain in the lower side and a bubble cylinder in the upper side. A plurality of bubble elevators is installed in the inner side of the lower part of the cylinder main body and forms a bubble elevating hole in one end. A path for inducing bubbles which are generated from air and a gas supply part is arranged into a zigzag type. The bubble shape forming part is installed on the top of the bubble cylinder. The main power input terminal supplies power.
Patent KR-20110125337-A (KR)
Title: Cigarette pack for prventing tobacco stuff dropping
Inventor: JANG DONG SIK
IPC: A24F15/18
Filed: 2010-05-13
Abstract: PURPOSE: A cigarette case for preventing the discharge of cigarette powder is provided to enable users to economically and easily manufacture the cigarette case without installing a separate case in the cigarette case. CONSTITUTION: A cigarette case for preventing the discharge of cigarette powder comprises the following: a cigarette packaging container storing plural cigarettes; and a packaging outer skin(3) surrounding the cigarette packaging container. The packaging outer skin includes a first opening band(4) formed on a cigarette outlet on the upper side of the cigarette packaging container for separating from a main body of the packaging outer skin, and a second opening band(5) formed on the lower side of the first opening band for separation from the main body of the packaging outer skin.
Patent KR-20110129175-A (KR)
Title: Joining method of flip chip
Inventor: KIM JUN KI
IPC: C09J9/02
Filed: 2010-05-25
Abstract: PURPOSE: A flip chip bonding method is provided to rapidly solidify an adhesive material after welding a chip and substrate, thereby successively performing processes without a gap in work flow. CONSTITUTION: An adhesive material(10) is applied on a substrate(S). A chip(C) is transferred in order to be placed on the adhesive material. A bump(b) is welded on the substrate by applying heat and pressure on the other surface of the chip. The adhesive material is more rapidly solidified in a latter part of a solidifying process compare to a beginning part of the solidifying process.
Patent KR-20110130194-A (KR)
Title: Vibration speaker
Inventor: JUNG HYUN SIK
IPC: B06B1/04
Filed: 2010-05-27
Abstract: PURPOSE: A vibration speaker is provided to steadily maintain coupling strength between an elastic member and a yoke by adjusting the junction location of an elastic member and a yoke into a boundary part. CONSTITUTION: A vibration speaker(1) elementarily includes a yoke(34), an oscillating element(30), and an oscillating plate(50). A magnet(32), which is offered in a case(10), is arranged in the yoke. The oscillating element includes an elastic plate(36) which is connected between the yoke and the case. The oscillating plate is arranged on the oscillating element in the case. The yoke and the elastic plate of the oscillating element are bonded in a boundary part. The oscillating element offers a vibration generating function. The oscillating plate offers a sound generating function. A weight is arranged in the yoke between the elastic plate and performs the role of amplifying vibration amount.
Patent KR-20110132803-A (KR)
Title: Lamp of having light-emitting diode and method of manufacturing the same
Inventor: LEE SEUNG BECK
IPC: F21Y101/02
Filed: 2010-06-03
Abstract: PURPOSE: An LED lighting apparatus and a manufacturing method thereof are provided to prevent chemical erosion by forming an erosion layer on the lower part of a radiation metal layer. CONSTITUTION: A light emitting diode(140) is formed on a printed circuit board(100) and performs a light emitting operation. A controller(120) is formed on the printed circuit board and is electrically connected to the light emitting diode. A water proof coating layer(200) is formed in the front side of the printed circuit board. The water proof coating layer protects the light emitting diode and the controller. A radiation metal layer(220) faces the water proof coating layer and performs a radiating operation.
Patent KR-20110135661-A (KR)
Title: Ofdm receiver being capable of estimating timing in multi-path fading channel, ofdm system having the same and timing estimation method thereof
Inventor: KANG SEUNG GOO
IPC: H04B1/10
Filed: 2010-06-11
Abstract: PURPOSE: An orthogonal frequency division multiplexing(OFDM) receiver which estimates timing in a multi-path fading channel, an OFDM system including the same, and a timing estimation method thereof are provided to improve timing estimation performance by eliminating timing errors. CONSTITUTION: A first timing estimation part(110) calculates a timing metric value based on an autocorrelation function of a received signal including a baseband orthogonal frequency division multiplexing(OFDM) sample signal. The first timing estimation part calculates a first timing estimation value based on the calculated timing metric value. A second timing estimation part(120) calculates a filtered timing metric value based on a cross-correlation function between the received signal and a preamble signal in a first timing estimation range based on the first timing estimation value. The second timing estimation part calculates a second timing estimation value based on the filtered timing metric value. An optimum-timing estimation part(130) calculates an optimum-timing estimation value by comparing an amplification amount.