baber/WOPTO huggingface dataset:
Patent KR-20070092030-A (KR)
Title: Laser diode and method of fabricating the same
Inventor: CHOI YOON HO
IPC: H01S5/22
Filed: 2006-03-08
Abstract: A laser diode and a manufacturing method thereof are provided to improve the thermal-stress resistant property of the laser diode by effectively radiating the heat from an activation layer through a metal layer and to improve the reliability of laser diode. Plural grooves are formed at a lower portion of a substrate. A metal layer fills in the plural grooves and is formed at the lower portion of the substrate. An n-contact layer(121) is formed on the substrate. A portion of the n-contact layer is etched to a predetermined depth. An n-electrode(140b) is formed on the etched portion on the n-contact layer. An n-cladding layer(122) is formed on the rest portion of the n-contact layer. A thin structure is formed on the n-cladding layer and contains an n-transport layer, an activation layer, an electron blocking layer, and a p-transport layer. A p-cladding layer(127) is formed on the p-transport layer and contains a ridge on an upper portion thereof. A p-contact layer(128) is formed on the ridge of the p-cladding layer. An insulation film(130) is formed to enclose an exposed surface of the p-cladding layer and an external surface of the p-contact layer. An insulation film includes an aperture for exposing the p-contact layer. A p-electrode(140a) fills in the aperture of the insulation film and is electrically connected to the p-contact layer.
Patent KR-20060059223-A (KR)
Inventor: CHANG JONG BOK
IPC: A62C2/10
Filed: 2006-03-13
Abstract: 본 발명은 방화셔터에 관한 것으로서, 상측슬레이트(121)에 횡으로 다수개의 보강플레이트(122)를 부착한 셔터(120)와, 상기 셔터(120)를 상측에 감아서 보관하는 저장부(110)와, 상기 셔터(120)를 절개하여 경첩(132)을 결합한 비상구(130)와, 상기 비상구(130)의 타측단에 대응되는 셔터(120)의 절단부에 결합하는 고정날개부(140)와, 상기 비상구(130)의 타측단에 결합하여 고정날개부(140)에 중첩되어 끼워지는 차단날개부(150)와, 상기 비상구(120)에 결합된 차단날개부(150)에 부착하여 틸트 동작을 유도하는 틸트바(210)와, 상기 틸트바(210)의 내측에 결합되어 걸림 상태를 유지하다 일정 이상의 힘이 가해지면 틸트 작용하되 고정날개부(140)에 걸린 상태를 유지하는 안전핀(223)을 구비한 작동구(220)로 구성하므로 방화셔터는 상측 슬레이트에 횡으로 다수개의 보강플레이트를 부착하여 고열로 인한 셔터의 변형을 억제하도록 하고 비상구에 결합된 차단날개부에 틸트바를 부착하고 틸트바의 내측에 작동구를 결합하되 작동구가 틸트바에 걸림 상태를 유지하다 일정 이상의 힘이 가해지면 틸트 작용으로 꺾어질 수 있도록 하고 작동구에 안전핀을 구비하여 고정날개부에 걸린 상태를 유지하도록 함으로서, 화재로 인한 풍압과 고열에도 차단상태를 지속적으로 유지할 수 있도록 하며 특히 화재 진압 마무리 단계 등의 상황에 따라 소방관 등이 쉽게 화재 발생지역으로 진입할 수 있는 효과가 있다.
Patent KR-20070093572-A (KR)
Title: Furniture interior site
Inventor: KIM SANG SUL
IPC: A47B96/20
Filed: 2006-03-14
Abstract: A metal thin film is provided to be layered on the surface of a particle board or an MDF(Medium Density Fiberboard) inorganic board used as an interior material of furniture, thereby creating an esthetic appeal of the furniture. A metal thin film(40) is deposited on the surface of a particle board or an MDF inorganic board(20) by an adhesive(30). A melamine sheet finish is utilized in order to ensure the adhesion between the metal thin film(40) and the particle board or the MDF inorganic board(20). Then, a part of a lateral side of the particle board or the MDF inorganic board(20) covered with the metal thin film(40) is bent to cause the metal thin film(40) to be adhered to the lateral side as well. Preferably, an undercut bent recess is formed at a bending site of the board(20) to allow the metal film(40) to bend without getting damaged.
Patent KR-20070094318-A (KR)
Title: Apparatus for receiving broadcasting and method for transmitting and receiving broadcasting
Inventor: KIM TAE HO
IPC: H04N5/44
Filed: 2006-03-17
Abstract: A broadcasting receiving apparatus and a broadcasting transmitting and receiving method are provided to reduce a waiting time required to display an image corresponding to a broadcasting signal of a second channel when a first channel is switched to the second channel. A channel change control signal is received(S20). It is determined whether a channel to be changed is a user's preference channel(S30). When the channel corresponds to the user's preference channel, it is determined whether a broadcasting signal of the channel is stored(S40). When the broadcasting signal is stored, an image corresponding to the stored broadcasting signal is displayed on a screen(S90).
Patent KR-20060032608-A (KR)
Inventor: SONG SUNG TAI
IPC: H01L21/00
Filed: 2006-03-17
Abstract: 본 발명은 서셉터의 메인플레이트에 관한 것으로서, 
     LCD기판에 박막을 증착하는 플라즈마 화학기상 증착 장비의 챔버 내에 설치된 샤워헤드의 하측에 설치되며, LCD기판이 전기적으로 접지되어 지지되고, 열을 인가하는 서셉터의 메인플레이트에 있어서, 상기 메인플레이트의 하면이 중심점을 기준으로 양 수직선에 의해 4등분되는 4개의 섹션으로 이루어지며, 상기 섹션의 가장자리 부근을 따라 소정 패턴으로 만곡지게 배열되고, 양단이 중앙부에 위치되는 제1열선과, 상기 제1열선의 내부영역에 소정 패턴으로 만곡지게 배열되고, 양단이 중앙부에 위치되는 제2열선을 포함하여 구성되어, 
     서셉터의 메인플레이트에 삽입되는 열선배열을 개선하여 메인플레이트에 안착되는 LCD기판의 가로방향의 변형률과 세로방향의 변형률이 동일하게 하여 대형LCD에 적용함으로써 가장자리 부근의 시야확보가 유리한 대형LCD기판을 제작할 수 있다. 
       
     서셉터, 열선배열
Patent KR-20070095729-A (KR)
Title: Method and apparatus for recovering frequency in orthogonal frequency division multiple access system
Inventor: SONG YONG CHUL
IPC: H04J11/00
Filed: 2006-03-22
Abstract: A method and an apparatus for recovering a frequency in an OFDMA(Orthogonal Frequency Division Multiple Access) system are provided to continue frequency error estimation stably by controlling a loop in the erroneous operation of the frequency error estimation loop. A method for recovering a frequency in an OFDMA system includes the steps of: modulating and decoding a signal received from a base station; estimating frequency errors by using the modulated signal; storing the estimated frequency errors in a memory by symbol units(505); determining the validity of received data of the symbol unit by using control information decoded from a signal processing unit; and estimating and recovering a frequency by using the frequency error of a normal operation among the frequency errors of the stored symbol when the received data is not valid.
Patent KR-20070098198-A (KR)
Title: Method and apparatus that can display the video during a video mute period
Inventor: YOON NA REE
IPC: H04N5/445
Filed: 2006-03-31
Abstract: A method and an apparatus for displaying an image are provided to offer image information such as advertisement to a user without adding hardware. A memory(30) stores received data. A control unit(70) searches the image data stored in the memory when an image is displayed by abnormal data, and displays the searched image data on a screen. A video processing unit including a VDP(Video Display Processor)(50) or an OSD(On Screen Display)(40) processes the searched data to be capable of being displayed. The memory stores EPG(Electronic Program Guide) data.
Patent KR-20060034679-A (KR)
Inventor: CHO SOON CHUL
IPC: B65D81/20
Filed: 2006-04-04
Abstract: 본 발명은 진공포장용 비닐팩에 관한 것으로, 일측에 형성된 개구부에 지퍼가 형성된 비닐팩 몸체와, 비닐팩 몸체에 설치되어 내·외부가 연통되는 공기 배출홀을 개폐시키는 개폐캡이 구비된 밸브와, 밸브의 하부에 고정되고 내부에 제습제, 항균제 또는 살균제가 담긴 약품팩을 수용하는 격자형의 카트리지를 포함하여 구성된다, 또한 본 발명의 개폐캡은 회전에 의해 공기 배출홀을 개폐하면서 개폐손잡이와 연동하며, 카트리지는 회동 개폐 가능한 상판 및 하판이 결합됨으로서 격자형 프레임으로 형성되어 내부 공간이 형성되는 것이다. 
     따라서, 비닐팩에 침구류나 의류를 장기간 보관하여도 수분에 의한 곰팡이의 발생을 방지할 수 있고, 살·항균제의 첨가를 통해 침구류나 의류의 세균 번식을 막아 냄새가 나는 것을 미연에 방지할 수 있다. 
       
     진공포장, 비닐팩, 밸브, 카트리지, 제습제, 살균제, 항균제
Patent KR-20060107388-A (KR)
Inventor: ENDO AKIHIKO
IPC: H01L21/20
Filed: 2006-04-07
Abstract: SOI 기판의 제조방법은, 제1 실리콘 기판의 정면 위에 적어도 산화막을 형성하고, 제1 실리콘 기판의 표면으로부터 수소이온을 주입함으로써, 제1 실리콘 기판의 내면에 주입 영역을 형성하고, 제2 실리콘 기판을 제1 실리콘 기판 위에 산화막을 통하여 적층함으로써, 제1 실리콘 기판과 제2 실리콘 기판이 서로 결합된 적층체를 형성하고, 소정의 온도에서 적층체를 가열함으로써, 제1 실리콘 기판을 이온주입 영역에서 분리하고, 산화막을 통하여 제2 실리콘 기판 위에 박막 SOI 층이 형성되어 있는 SOI 기판을 얻는 단계를 포함한다. 제1 실리콘 기판은,수소를 포함하는 무기 분위기에서 CZ법에 의해 성장된 베이컨시 타입 점결함의 응집과 인터스티셜 실리콘 타입 점결함의 응집이 없는 잉곳을 슬라이싱하여 형성된다. SOI층으로부터 분리된 층 이송된 웨이퍼가 제1 실리콘 기판으로 다시 사용된다.
Patent KR-20070101694-A (KR)
Title: Electromotive car exit it bit, the temporary protection unit
Inventor: JANG SUNG CHAN
IPC: B61B1/02
Filed: 2006-04-12
Abstract: A temporary protection stand for a door of an electric railcar is provided to facilitate installation work for the temporary protection stand by using a coupling unit which includes male and female connectors formed at a strut in constant intervals. A temporary protection stand comprises a strut(301) and a protection curtain(320). The strut(301) includes a joint unit(330), which is folded and unfolded, and fixing lock units. The fixing lock units are installed at two sides of the joint unit(330) to fix the joint unit(330) when the joint unit(330) is unfolded. The protection curtain(320) is installed at the strut(301). Hooks are formed at the strut(301) in constant intervals. A coupling unit (310), which includes a female connector(310a) and a male connector(310b), is installed at the hooks.
Patent KR-20070108723-A (KR)
Title: Apparatus and method for providing security access control
Inventor: LEE SUNG MIN
IPC: G06F21/00
Filed: 2006-05-08
Abstract: An apparatus and a method for providing security access control are provided to simplify a security work and an insecurity work of users by executing the user's input process which needs security in the security zone and executing the user's input process which do not need security in the insecurity zone. An apparatus for providing security access control includes an input part(281), a virtual hierarchical part(250), a security hierarchical part, and an insecurity hierarchical part. The input part receives user's command. The virtual hierarchical part makes a virtual command corresponding to the command according to security or insecurity of the command. The security hierarchical part executes a security work according to the command which needs security among the virtual commands. The insecurity hierarchical part executes an insecurity work according to the command which does not need security among the virtual commands.
Patent KR-20070114943-A (KR)
Title: Nanoparticles coated with silicon-containing polymers and their use as contrast agents
Inventor: JON SANG YONG
IPC: B82B3/00
Filed: 2006-05-30
Abstract: A contrast agent is provided to have excellent anti-biofouling characteristics, retain stabilized polymer coating, facilitate infiltration into a targeted tissue, have increased circulation time in blood, and be discharged from a body within a proper time. A contrast agent includes many nanoparticles. The nanoparticle comprises (a) a signal generating core, and (b) a water-soluble outer shell which includes silicon-contained water-soluble polymers, is applied onto the surface of the signal generating core, increases anti-biofouling characteristics and water dispersibility of nanoparticles, and improves contrast abilities of nanoparticles. The signal generating core is a paramagnetic, superparamagnetic, or proton-density signal generating core.
Patent KR-20060128732-A (KR)
Title: Process for the preparation of 4,4'-diphenylmethane diisocyanate
Inventor: KEGGENHOFF BERTHOLD
IPC: C07C263/10
Filed: 2006-06-09
Abstract: Provided is a method for preparing 4,4'-diphenylmethane diisocyanate(MDI), which is a simple preparation to be conducted at different positions, and transfers a raw material suitable for the preparation of 4,4'-MDI from a first production point to a second production points without the disadvantages of conventional methods. The method for preparing 4,4'-diphenylmethane diisocyanate comprises the steps of: (a) preparing diamines and polyamines of the diphenylmethane series by reacting aniline and formaldehyde in the presence of an acid catalyst at a first point; (b) preparing corresponding diisocyanates and polyisocyanates of the diphenylmethane series by reacting the diamines and polyamines with phosgene at the first point; (c) optionally, separating the diisocyanates and polyisocyanates by distillation to obtain a mixture comprising 50-80wt% of 4,4'-diphenylmethane diisocyanate, 1-12wt% of 2,4'- and(or) 2,2'-diphenylmethane diisocyanate, and 10-45wt% of trifunctional and multi-functional polyisocyanates, based on the total weight of the mixture of diisocyanates and polyisocyanates; (d) carrying the mixture of diisocyanates and polyisocyanates in a container; (e) transporting the container containing diisocyanates and polyisocyanates to a second point far away from the first point; and (f) separating the mixture of diisocyanates and polyisocyanates by distillation and(or) crystallization to obtain pure 4,4'-diphenylmethane diisocyanate comprising at least 97wt% of 4,4'-diphenylmethane diisocyanate and at most 3wt% of 2,4'-diphenylmethane diisocyanate.
Patent KR-20070122273-A (KR)
Title: Apparatus for plasma surface treatment of laminated polymer for heat exchanger and method thereof
Inventor: KIM SEONG YOUNG
IPC: C23C16/44
Filed: 2006-06-26
Abstract: A plasma surface treatment apparatus and a method thereof for laminated polymer used for a heat exchanger are provided to add hydrophilic property and moisture permeability to the polymer by allowing two surfaces of the polymer to react with plasma. A plasma surface treatment apparatus for laminated polymer comprises a feeding part(110), a plasma surface treatment part(130) and a receiving part(170). The feeding part has a release roller(111) around which the laminated polymer is wound. The feeding part automatically provides the polymer. The plasma surface treatment part generates plasma using a glow discharging in a vacuum chamber to treat both surfaces of the polymer with the plasma. The receiving part has a winding roller(171) for receiving the polymer.
Patent KR-20080004718-A (KR)
Title: Dual display device
Inventor: PARK YOUNG JOO
IPC: G09G3/20
Filed: 2006-07-06
Abstract: A dual display device is provided to reduce the memory used for an LCD(Liquid Crystal Display) device by driving individually transmissive and reflective pixels using different interfaces from each another. A dual display device includes a display unit(300), a gate driver(400), a signal controller(600), and a data driver(500). The display unit having first and second units, which are opposite to each other, includes first and second pixels for displaying images through the first and second units. The gate driver supplies gate signals to the first and second pixels. The signal controller includes first and second receivers for receiving input image signals, and generates first and second output image signals based on the input image signals. The data driver generates first and second data voltages by converting the first and second output image signals, and supplies the first and second data voltages to the first and second pixels, respectively.
Patent KR-20080006041-A (KR)
Title: Apparatus and method for providing video on demand service
Inventor: YEO CHANG HOON
IPC: H04N21/6334
Filed: 2006-07-11
Abstract: An apparatus for providing a VOD(Video On Demand) service, and a method thereof are provided to encrypt a decryption key capable of decrypting encrypted contents and transmit the encrypted key to prevent the contents from being used without permission by a user who does not subscribe to the service. A contents encrypting unit(110) encrypts contents to be transmitted to the outside. A decryption key generating unit(120) generates a decryption key capable of decrypting the encrypted contents. A decryption key encrypting unit(130) encrypts the decryption key generated by the decryption key generating unit(120). A memory unit(140) maps and stores the encrypted contents, the encrypted decryption key corresponding to the encrypted contents, and decryption key decrypting information capable of decrypting the encrypted decryption key. A signal transmitting unit(150) multiplexes the encrypted contents and the encrypted decryption key, and transmits the multiplexed signal to the outside. A communication unit(160) performs data communication with a user terminal connected through a certain communication network. When the user terminal connected through the communication unit(160) requests decryption information about the encrypted decryption key, a control unit(170) judges whether a user subscribes to a VOD service. When the user subscribes to the VOD service, the control unit(170) controls the communication unit(160) to read the decryption information mapped to the encrypted decryption key from the memory unit(140) and transmit the read decryption information to the user terminal.
Patent KR-20080008106-A (KR)
Title: Watching apparatus of tire air-pressure
Inventor: PARK BYUNG HYUK
IPC: B60C23/00
Filed: 2006-07-19
Abstract: An air pressure sensing device for a vehicle tire is provided to improve assemblage and reliability by sensing air pressure of the tire using an optical fiber lattice sensing unit. An air pressure sensing device for a vehicle tire comprises: an optical fiber lattice sensing unit(10) generating an optical signal according to air pressure of a tire(2), a warning unit(20) for abnormality of the air pressure of the tire, and a controller(30) controlling the warning unit(20) according to the optical signal from the optical fiber lattice sensing unit.
Patent KR-20080009838-A (KR)
Title: Apparatus and method for treating substrate
Inventor: HA CHONG EUI
IPC: H01L21/302
Filed: 2006-07-25
Abstract: An apparatus and a method of treating a substrate are provided to increase the process yield of the substrate by continuously performing an etching process, a cleaning process, a rinse process, and a drying process. An apparatus(10) of treating a substrate includes a process chamber(100), a first supplying unit(200), a second supplying unit(300), and a controlling unit. The process chamber has an inner space for treating the substrate, a housing with the opened upper part, and a supporting member which supports the substrate inside a housing. The first supplying unit supplies a cleaning liquid to the substrate received in the process chamber. The second supplying unit supplies an etching liquid for etching the edge of the substrate received in the process chamber. The controlling unit controls the first supplying unit and the second supplying unit to supply the cleaning liquid and the etching liquid alternately.
Patent KR-20080010605-A (KR)
Title: Plasma display apparatus
Inventor: WEON JONG HYUN
IPC: H01J11/46
Filed: 2006-07-27
Abstract: A plasma display apparatus is provided to reduce EMI(Electro-Magnetic Interference) and power noise by burying a cable into a chassis. A plasma display panel displays an image by using discharge. A chassis(230) is formed to support the plasma display panel. A circuit assembly is arranged in the chassis. A cable(220) is buried into the chassis. A connective terminal part(240) is installed at an end of the cable in order to be electrically connected to the circuit assembly. The connective terminal part is exposed from a surface of the chassis. The chassis includes an insulating material, a heat-resistant material, and a plastic material. The circuit assembly and the connective terminal part are coupled to each other in an insertion manner.
Patent KR-20070042068-A (KR)
Inventor: LIM CHER HO
IPC: G01M3/26
Filed: 2006-08-02
Abstract: 본 발명은 지하수 열교환시스템의 누수측정장치에 관한 것으로, 보어홀을 뚫어 지하수로부터 지열에너지를 얻는 열교환시스템에 있어서, 내부에 일정한 수위를 유지하는 기밀성이 있는 물저장탱크와; 상기 물저장탱크의 상부에 기밀성 있게 연결되어 외부의 물을 공급하는 물공급파이프와; 상기 물공급파이프로부터 공급되는 물을 조절하는 급수조절수단과; 상기 물저장탱크의 하단부에 연결되어 상기 보어홀 내부로 누수된 지하수량을 보충시키는 보충파이프와; 상기 보충파이프 또는 물공급파이프에 연결되어 상기 보어홀 내부로 공급되는 수량을 측정하는 측정수단으로 구성되어, 특정 보어홀 내부의 지하수가 지하로 누수 되는 수량을 간편하게 측정하여 상기 보어홀을 이용하여 열교환시스템을 설치할 수 있는지를 판단하는데 도움을 줄 수 있다. 
       
     지하수, 열교환시스템, 누수, 측정장치
Patent KR-20080016018-A (KR)
Title: Image display device and broadcasting providing method using it
Inventor: KOO BYUNG JOON
IPC: H04N21/43
Filed: 2006-08-17
Abstract: A video display unit and a method for providing broadcasts using the same are provided to restrict the watching of rated broadcast programs effectively, inappropriate for children or adolescents, by outputting a preset recorded program in case a currently received broadcast program meets restrictive conditions for watching. A video display unit comprises a memory part(103), a PVR(Personal Video Recorder) module part(125), a broadcast information extraction part(121), a recorded broadcast extraction part(122), and a control part(102). The memory part(103) stores restrictive conditions for the watching of specific broadcast programs and the information of a recorded broadcast program to be substitutively provided when a broadcasting program that fulfills the restrictive conditions is received. The PVR module part(125) stores the recorded broadcast program. The broadcast information extraction part(121) extracts the information of a broadcast program received through a tuner(108). Using the information of the received broadcast program, the recorded broadcast extraction part(122) extracts the recorded broadcast program from the PVR module part(125) in order to replace the received broadcast program. In case the information of the received broadcast program meets the restrictive conditions, the control part(102) executes a control operation to regenerate the extracted broadcast program.
Patent KR-20070021960-A (KR)
IPC: H01L33/00
Filed: 2006-08-18
Abstract: 본 발명은 회절성 광학 소자를 사용하여 직사각형의 방사 패턴을 갖는 광 플래쉬를 생성하는 전자 플래쉬, 촬상 디바이스 및 광 플래쉬의 생성 방법에 관한 것이다. 회절성 광학 소자는 회절성 광학 소자로부터 방사된 광의 방사 패턴이 직사각형이 되도록 광원으로부터 방사된 광을 회절시켜 직사각형의 방사 패턴을 갖는 광 플래쉬를 생성한다.
Patent KR-20070032214-A (KR)
IPC: H01H9/20
Filed: 2006-08-18
Abstract: 본 발명은 비상 전원 절체 개폐기에 관한 것으로서, 특히 상용전원 또는 비상(예비)전원에서 타측 전원을 절환시키는 가동단자의 동작이 수직방향으로 진행되는 경우에, 중성선의 N상 가동단자가 3상 가동단자보다 접점에서 이탈되는 시간을 지연시키고, 타측 전원의 접점과 접속되는 시간은 신속하게 이루어지도록 한 비상 전원 절체 개폐기에 관한 것이다. 
       
     전원 절체 개폐기, N상 가동단자, 3상 가동단자.
Patent KR-20080020206-A (KR)
Title: Iii-nitride semiconductor light emitting device
Inventor: KIM CHANG TAE
IPC: H01L33/10
Filed: 2006-08-31
Abstract: A III-nitride semiconductor light emitting device is provided to improve the external quantum efficiency of an illumination device by implementing a hybrid beam scattering layer. A III-nitride semiconductor light emitting device comprises a substrate, plural nitride semiconductor layers(30), and a hybrid beam scattering layer(70). The nitride semiconductor layers, which are grown on the substrate, include an active layer(40) for generating lights due to the recombination of electrons and holes between III-nitride semiconductor layers having first and second conductivities different from each other. A first electrode layer is formed on the III-nitride semiconductor layer. The hybrid beam scattering layer is formed on the substrate.
Patent KR-20080020808-A (KR)
Title: System and method for blocking spam sending
Inventor: KIM DONG HYOUK
IPC: H04W88/18
Filed: 2006-09-01
Abstract: A mobile communication system for blocking spam transmission and a method thereof are provided to detect and block spams sent from spam senders who are not previously registered, in real time, thereby removing unnecessary traffic within a network, consequently stability in case of system operation can be obtained. An MSC(Mobile Switching Center)(130) receives a conversation request call or a short message sending request call through a wire/wireless communication network(170). An HLR(Home Location Register)(150) confirms whether a receiving number of the short message sending request call or the conversation request call exists, in connection with the MSC(130). If frequency which demands the call of a sending terminal(110) to the receiving number whose non-existence is decided on or frequency which demands transmission of a short message exceeds a particular threshold value, a spam detection server(160) decides a telephone number of the sending terminal(110) as a spam transmission number.
Patent KR-20080025458-A (KR)
Title: Control system of a motor and control method of the same
Inventor: KIM HAN GEE
IPC: H02P6/08
Filed: 2006-09-18
Abstract: A motor control system and a control method thereof are provided to detect change of a motor speed by detecting changed current according to a duty rate of a voltage through a shunt resistor. A motor control system includes a motor, a current detection circuit(100), and a microcomputer(200). The motor includes a rotor and a stator. The stator includes a stator coil. The stator coil generates a rotation force on the rotor by forming a magnetic field. The current detection circuit includes a shunt resistor(Rshunt) next to a resistor(R2). The shunt resistor is used for detecting a current. The microcomputer varies phase angle of power source inputted into the stator coil according to a rotation speed of the rotor.