baber/WOPTO huggingface dataset:
Patent KR-20090028112-A (KR)
Title: Phase clock generator
Inventor: KIM TAE GYU
IPC: H03L7/099
Filed: 2007-09-14
Abstract: A phase clock generator is provided to reduce a circuit size by excluding an additional circuit like a stabilization circuit and a distribution device like an inductor. A phase clock generator(200) comprises a plurality of transistors(211 ~ 226) and a buffer(230). A plurality of transistors is connected between a power line(VDD) and a ground line(VSS), and forms four lines(L1 ~ L4) and N columns(C1 ~ C4). A plurality of phase delay signals is inputted to a gate terminal of the transistor. Two transistors among four transistors of unit line make a pair as NMOS(N-channel Metal Oxide Semiconductor). Rest two transistors among four transistors of unit line make a pair as PMOS. The buffer is connected to a line between the NMOS pair and the PMOS(P-channel Metal Oxide Semiconductor) pair, and transmits a clock signal.
Patent KR-20090030667-A (KR)
Title: Encoder unit
Inventor: KIM SEUNG KI
IPC: B01D46/42
Filed: 2007-09-20
Abstract: An encoder unit is provided to prevent water from flowing to PCB(Printed Circuit Board) which mounted inside a lower cover, thereby preventing a malfunction of the encoder unit. An encoder unit comprises a handle(210), an upper cover(220), a lower cover(240), and a control signal generator(230). The handle includes a cylindrical housing(211) and an extension part(212) protruded from an outer peripheral surface of the housing. The upper cover wherein the extension part is inserted prevents the extension part from being separated. The lower cover covers a lower part of the upper cover. The encoder unit is located on a PCB.
Patent KR-20090032495-A (KR)
Title: Seam tracking apparatus using cylinder type beam and seam tracking method
Inventor: KIM JONG HYEONG
IPC: G01B11/24
Filed: 2007-09-28
Abstract: A core tracking apparatus taking advantage of cylindrical beam and a core tracking method thereof are provided that the seam of incline and plane is accurately measured by getting three dimensional information of the measurement object. A core tracking apparatus taking advantage of cylindrical beam comprises a beam generator(201) for scanning a laser beam, a filter(202) which is located in one side of the beam generation, and transmits the light coming from the beam generation to the circular shape, lens(203) which is separated from the filter, and a camera(205) which is arranged in one side of the beam generation, and takes a picture of the shape formed on the scanned surface.
Patent KR-20090034055-A (KR)
Title: Temperature setting method of thermal processing plate, computer-readable recording medium, and temperature setting apparatus of thermal processing plate
Inventor: JYOUSAKA MEGUMI
IPC: H01L21/02
Filed: 2007-10-02
Abstract: A temperature setting method of thermal processing plate, computer-readable recording medium, and temperature setting apparatus of thermal processing plate are provided to rapidly progress the initiation task of the heating treatment apparatus. The heat processing unit is segmented by a plurality of regions. The temperature of each region of the heat processing unit can be set. The temperature correction of each region of the heat processing unit can be set. For the substrate processed by a thermal process, the in-plane tendency of the current process state of substrate is disassembled to a plurality of in-plane tendency components(S2). The improvable in-plane tendency of the process state of substrate is calculated(S3). The in-plane tendency of the process state after the improvement of substrate is calculated(S4).
Patent KR-20080031638-A (KR)
Title: Polymer, resist composition, and patterning process
Inventor: HARADA YUJI
IPC: C08F220/22
Filed: 2007-10-02
Abstract: A polymeric compound is provided to form an alkali-soluble resist for dry lithography and immersion lithography causing little variation in shape and having excellent processability. A polymeric compound comprises repeating units represented by the following formulae (1a), (1b) and (1c), and has a weight average molecular weight of 1,000-500,000. In the formulae, each of R1a, R1b and R1c represents H, F or C1-C4 linear or branched alkyl or fluoroalkyl; R2a represents H, -R3-CO2H or -R3-OH; R2c represents a C2-C20 linear, branched or cyclic fluoroalkyl; R3 is a divalent organic group containing fluorine or not; R4 is methylene or oxygen; R5 is H or -CO2R7; R6 is H, CH3 or CF3; R7 is H, C1-C20 linear, branched or cyclic alkyl; and 0<=a<1, 0<b<1, 0<=c<1, and 0<a+b+c<=1.
Patent KR-20090034536-A (KR)
Title: Non-halogen type adhesive composition using polymer layered silicate nanocomposites for coverlay film
Inventor: LEE SANG HOON
IPC: C09J113/00
Filed: 2007-10-04
Abstract: A non-halogen type nanocomposite adhesive composition for a coverlay film is provided to ensure dhesive property, soldering heat resistance, moisture resistance, shelf life and junction workability and to be environment-friendly by not using a halogen-based flame retardant. A non-halogen type adhesive composition for a coverlay film containing a laminate consisting of an insulation film, adhesive and release film comprises (a) a rubber mixture containing a carboxyl group; (b) non-halogen type epoxy resin; (c) nanosilicate substituted with reactive organic onium; (d) hardener; and (e) curing accelerator. The nanosilicate substituted with the reactive organic onium is the nanosilicate substituted with N,N-dimethyl-ene-hexadecyl-(p-vinylbenzyl) ammonium chloride.
Patent KR-20090020451-A (KR)
Title: Lens carrier container
Inventor: KASUGA YOHICHI
IPC: B65G15/28
Filed: 2007-10-10
Abstract: A lens conveyance tool is provided, which can return lenses with the different sizes not to deviate from the route by using one lens conveyance tool. A lens conveyance tool comprises: a container body(2); a concave part of the predetermined depth formed from the upper side(3) of the container body to the floor side(4); and a penetration hole(5) passing through the container body from the upper side to the floor side. At the inner side of the concave part or the penetration hole, several stairs are formed. The stepped portion is protruded to the inside from the upper side of the container body along the floor side. The lens(20) is supported by the upper side and inner side of each stepped portion.
Patent KR-20090037694-A (KR)
Title: Cutter using magnet controller
Inventor: JUNG GYUN HYUNG
IPC: B26B1/08
Filed: 2007-10-12
Abstract: A cutter using a magnet controller is provided to prevent accident due to a blade which does not contact with a second metal member and is pushed into a body with the second metal member separated with a blade. A cutter using a magnet controller comprises a body(10) having a blade guide groove in the inside; a blade(50) moving back and forth in the blade guide groove; a first metal member(20), pushed on the rear end of the blade, installed inside the body; and a second metal member(30) pushed onto the outer surface of the body conforming to the first metal member. At least one from the first metal member and the second metal member is made from magnetic body.
Patent KR-20090038982-A (KR)
Title: Method and apparatus for monitoring service fault
Inventor: KIM BOM SOO
IPC: G06F11/30
Filed: 2007-10-17
Abstract: An apparatus and a method for monitoring a service error are provided to exactly grasp an error circumstance, a spreading range of an error and an error influence, thereby rapidly and exactly handling a service error management work. An error management object registering unit(110) selects an error management object related to a service operation in a database. The selected error management object is registered in a topology map. An attribute setup unit(120) sets an error influence attribute of the registered error management object. An error influence path selector(130) selects an error influence transmission path and an error influence receiving path. The error influence path selector sets the selected transmission path and receiving path. An error influence generator(140) generates a service error influence determination result based on the second error determination reference and an error influence search range.
Patent KR-20090040995-A (KR)
Title: Interactive navigation
Inventor: BARK MUN SOO
IPC: G01C21/34
Filed: 2007-10-23
Abstract: An interactive navigation device is provided to communicate with a driver by recognizing question through a voice recognition system in case a driver questions and selecting a reply corresponding to the question in a voice memory chip. An interactive navigation device comprises: a voice recognition system(10) for recognizing the voice of a driver inside the navigation device; a voice memory chip(16) making a reply to the question of driver; and a voice output system(14) formed to be easily understood. Contents in which a driver can question are collected in the voice memory chip classified by genres.
Patent KR-20090042344-A (KR)
Title: Method for the synthesis of nucleic acid by using fragmented nucleic acids and n-primer
Inventor: MOON JAE SUN
IPC: C12N13/00
Filed: 2007-10-26
Abstract: A method for synthesizing nucleic acid using fragmented nucleic acids and N-primer is provided to avoid replication by synthesizing cDNA or complementary strand of the nucleic acid in all sites, thereby securing all cDNA or base sequence of the complementary nucleic acid derived from mRNA. A synthesis method for nucleic acid comprises the following steps of: fragmenting RNA through sonication; synthesizing a first strand of complementary DNA by annealing N-primer in the fragmented RNA; and adding a DNA polymerase to the synthesized first strand of complementary DNA to synthesize a second strand of cDNA. A kit for nucleic acid synthesis includes the N-primer and other reagents required for the nucleic acid synthesis.
Patent KR-20080044762-A (KR)
Title: Film for packaging
Inventor: OODERA TOSHIYA
IPC: B65D75/66
Filed: 2007-10-30
Abstract: A film for packing is provided to be made of a two-axis polypropylene resin film and to have very excellent extension directionality by an opening tape when the opening film is installed on the TD of the film. A film for packing is made of a two-axis extension resin film which has elongation at break of less than 170% in a longitudinal direction, and has at least a base layer that is made of a polypropylene resin and is two-axis extended. An opening(N) is stacked in a width direction of the two-axis extension polypropylene resin film. The elongation at break of the two-axis polypropylene resin film in a width direction is 40-90%. A heat sealing layer made of polyolefin resin is stacked on at least on surface of the base layer that is made of a polypropylene resin and is two-axis extended.
Patent KR-20090044190-A (KR)
Inventor: JO SUNG PIL
IPC: A47J37/00
Filed: 2007-10-31
Abstract: 본 발명에 의한 자동튀김장치는 튀김장치 본체와, 기름을 수용하며 재료를 튀길 수 있도록 소정 경로의 튀김공간과 튀겨진 재료가 배출되는 배출부를 가지는 조리탱크와; 튀김공간에서 튀겨지는 재료를 차례로 이동시켜 배출부로 안내하는 재료 이송유닛; 및 이송유닛을 무한궤도의 경로로 구동시키는 구동유닛을 포함하며, 이송유닛이 상기 구동유닛에 착탈가능하게 설치된다. 이에 의하면, 튀김재료의 성질 및 형상에 따라 이송체부재를 선택적으로 사용할 수 있고, 또 용이하게 청소할 수 있으며, 튀김에 필요이상의 기름이 함유되는 것을 최소화하여 튀김의 맛을 좋게 하고 이를 섭취하는 사람의 건강에 유익한 영향을 끼친다. 또한  여러 종류의 튀김재료를 각각 분리시킨 체로 동시에 튀길 수 있는 효과가 있다.  
       
     튀김공간, 조리탱크, 이송유닛, 구동유닛, 가이드유닛, 바스켓조립체
Patent KR-20090047207-A (KR)
Inventor: YOON JUNG KYU
IPC: C10B25/02
Filed: 2007-11-07
Abstract: 본 발명은 스몰도어 내부에 잔존하는 석탄을 제거하여 스몰도어의 오픈시에 분진 또는 가스의 발생을 방지하도록 하는 스몰도어의 잔탄 제거장치에 관한 것이다. 
     이를 위한 본 발명은, 코크스 오븐의 스몰도어 위치로 승강되는 승강 플레이트와, 승강 플레이트의 승강 구동력을 부여하는 승강 실린더부재와, 승강 플레이트에 수평하게 장착되는 수평 실린더부재와, 수평 실린더부재의 구동력이 전달되어  승강 플레이트의 수평 방향으로 선택적으로 이동되는 수평 이동부재와, 수평 이동부재의 선단에 장착되며 수평 실린더부재의 구동으로 스몰도어에 잔존하는 석탄을 제거하는 가압부재를 제공한다. 
       
     석탄, 코크스 오븐, 스몰도어, 실린더, 링크
Patent KR-20090048156-A (KR)
Inventor: KIM JUNG HYANG
IPC: B41M5/00
Filed: 2007-11-09
Abstract: 본 발명은, 그라비아 또는 스크린 인쇄를 이용한 홀로그램 디지털 포토프린트 용지의 제조방법에 있어서, 유포지(100)의 일면에 접착제층(102)을 형성하는 단계와, 홀로그램층(104)이 이형지(106)상에 증착된 홀로그램 증착 전사 필름(107)의 홀로그램층(104)이 상기 유포지(100)의 일면에 형성된 접착제층(102)에 접촉하게 덧대고 열전사하여 상기 홀로그램층(104)이 상기 유포지 상에 전사되어 결합되게 하는 단계와, 유포지(100)에 결합된 홀로그램층(104) 상에, 폴리비닐알콜(PVA) 100중량%에 대하여, 글리세린 15중량%, 메틸알코올 30중량%, 메라민 수지 5중량%, 아니스유 0.5중량%, 증류수 25중량%, 실리카 고형분 25중량%를 포함하여 수분산 또는 수용액화한 도포액(108)을 그라비아 인쇄 또는 스크린 인쇄하여 이를 건조시켜 형성한 것을 그 특징으로 하는 홀로그램 디지털 포토프린트 용지 제조방법에 관한 것이다. 
       
     알루미늄, 홀로그램, 그라비아, 스크린, 프린트
Patent KR-20090048803-A (KR)
Inventor: PARK SANG HYUN
IPC: H04B1/40
Filed: 2007-11-12
Abstract: 본 발명은 휴대단말과 센서모듈을 이용하여 사용자의 운동 상태를 체크할 시, 사용자의 운동량에 따른 상태정보를 보다 효율적으로 제공할 수 있는 휴대단말의 사용자인터페이스 제공 방법 및 장치에 관한 것으로, 이러한 본 발명은 휴대단말을 이용한 운동관리 어플리케이션의 표시 방법에 있어서, 운동관리 어플리케이션을 실행을 사용자인터페이스를 표시하는 과정과, 상기 사용자인터페이스 표시 시, 상기 사용자인터페이스 내의 표시영역을 설정되는 사용자인터페이스 타입에 따라 목표정보 표시영역과 상태정보 표시영역으로 구분하여 표시하는 과정과, 상기 목표정보 표시영역에 설정되는 목표정보를 표시하는 과정과, 센서모듈로부터 전달되는 생체데이터에 대한 상태정보를 상기 사용자인터페이스의 상태정보 표시영역에 표시하는 과정을 포함한다. 
       
     휴대단말, 센서모듈, 생체데이터, UI, GUI
Patent KR-20090049193-A (KR)
Inventor: KIM JUN YEOP
IPC: H01M4/86
Filed: 2007-11-13
Abstract: 본 발명은 2종의 촉매를 포함하는 직접메탄올 연료전지용 캐소드 전극 및 이를 사용하는 막전극 접합체 및 직접메탄올 연료전지에 관한 것이다. 전해질막의 일측면에 구비되며, 상기 전해질막과 대향하는 면에 구비되는 기체확산층 및 상기 전해질막과 상기 기체확산층 사이에 개재되는 촉매층을 포함하는 본 발명의 직접메탄올 연료전지용 캐소드 전극은, 상기 촉매층이 백금촉매 또는 탄소계 지지체에 담지된 백금촉매; 및 백금-루테늄 합금촉매 또는 탄소계 지지체에 담지된 백금-루테늄 합금촉매를 포함하는 것을 특징으로 한다.  
     본 발명의 직접메탄올 연료전지용 캐소드 전극은 특정한 2종의 촉매를 포함하여, 메탄올 크로스오버의 영향을 최소화하며 촉매량을 저감하여도 연료전지가 우수한 성능을 가지게 한다. 
       
     직접메탄올 연료전지, 촉매층, 캐소드
Patent KR-20090049447-A (KR)
Inventor: KIM KYOUNG SEUK
IPC: H04B7/14
Filed: 2007-11-13
Abstract: 본 발명은 이동통신 시스템에서의 무선 중계기에 있어서, 기지국과의 무선 통신을 수행하는 링크안테나와, 단말기와 무선통신을 수행하는 서비스안테나와, 기지국으로부터의 신호를 증폭하는 하향신호증폭처리부와, 단말기의 신호를 증폭하는 상향신호증폭처리부와, 상향, 하향신호증폭부처리부와 링크안테나를 연결하는 링크안테나연결부와, 상향, 하향 신호증폭처리부와 서비스안테나를 연결하는 서비스안테나연결부와, 하향신호증폭처리부의 내부 또는 외부에 위치하며, 하향 신호를 다수개로 분배하여 각 분배된 신호의 시간 지연차를 달리 하여 지연시키며, 각 지연된 신호를 다시 결합하여 출력하는 시간지연신호처리부를 구비한다. 
       
     무선, 중계기, PN, 선택, 지연
Patent KR-20090050680-A (KR)
Inventor: AHN JUNG BAE
IPC: B62D1/04
Filed: 2007-11-16
Abstract: 본 발명에 따른 스티어링 조립체는 마운팅 플레이트 바디부에 형성되며 스티어링 휠 모듈과 체결되는 결합부를 포함한다. 따라서 상기 마운팅 플레이트 조립체와 스티어링 휠 모듈의 체결시 용이하게 착탈이 가능하므로 신속하게 조립이 가능하다.
Patent KR-20080061262-A (KR)
Title: Oscillator
Inventor: NUMATA TOSHIMASA
IPC: H03B5/12
Filed: 2007-11-21
Abstract: An oscillator is provided to suppress differences harmonic signals of output power or between oscillation signals generated from respective oscillating units by utilizing a strip line. An oscillator includes plural oscillating units(11-1n), a transmission line, and a lower pass filter(18). The oscillating units output different oscillation frequencies from one another. The transmission line, which has characteristic corresponding to output impedance of an output terminal(Tout), is connected to outputs of the oscillating units. The lower pass filter is connected between the transmission line and the output terminal. The transmission line is formed by a strip line(15).
Patent KR-20090052658-A (KR)
Inventor: PARK DAE JIN
IPC: H01L21/027
Filed: 2007-11-21
Abstract: 본 발명은 노광 마스크 및 그 제조 방법에 관한 것으로, 불균일한 피치를 가지는 큰 패턴 및 독립 패턴 형성 시 공정 마진이 감소하여 패턴이 형성되지 않는 문제를 해결하기 위하여, 위상 반전 패턴의 에지부 양측에 차광 패턴이 구비되는 노광 마스크를 사용하여 디포커스 마진(Defocus Margin)을 증가시키고, 이미지 콘트라스트(Image Contrast)를 향상시켜 패턴 형성 시 공정 마진을 향상시키는 기술을 개시한다.
Patent KR-20090054699-A (KR)
Title: Crosswalk guide device for the visually handicapped person
Inventor: KIM CHAN HO
IPC: G08G1/09
Filed: 2007-11-27
Abstract: A crosswalk guide device for the visually handicapped person is provided to allow the visually handicapped person and people to pass the crosswalk easily by enabling them to recognize a direction and distance to a destination. A signal generation unit(102) outputs ascending 8 scales and descending 8scales. A tone rate control unit(103) has a user interface controlling a tone output rate of the scales outputted in the signal generation unit. A tone amplifier(104) amplifies the scales outputted from the signal generation unit. A tone controlling unit(105) has a user interface controlling a sound volume of the amplified scales. A controller(101) outputs the scales stored inside it when receiving a walk lamp signal.
Patent KR-20080067564-A (KR)
Title: Method of coating adhesive on the inner surface of pericle frame
Inventor: SEKIHARA KAZUTOSHI
IPC: G03F1/62
Filed: 2007-11-28
Abstract: A method for coating an adhesive on an inner surface of a pericle frame is provided to obtain stably a coating layer with high quality by preventing the dispersion of the adhesive. An inner surface is in a horizontal state or an upward state by holding a pericle frame(11). An adhesive diluted by a solvent is dropped from a discharge part(16). The adhesive is applied by moving the discharge part. The amount of adhesive is controlled by a moving speed of the discharge part and a position of the discharge part on the pericle frame. The adhesive is coated in a through-hole formed at the pericle frame. An outer width of a front end of the discharge part is more than 50 percent of an inner width of the pericle frame.
Patent KR-20090055719-A (KR)
Inventor: CHOI CHANG WOO
IPC: G08B21/00
Filed: 2007-11-29
Abstract: A system of hindrance diagnose of a heater in ATM is provided to operate a heater smoothly by using a second temperature sensor temporarily when a first temperature is out of order. A first temperature sensor(20) measures an inner temperature of a body frame, and a controller(30) operates a heater by controlling an on/off switch(40) according to a measured temperature by the first temperature. A second temperature sensor(21) is installed inside the body frame, and the second temperature sensor operates a fan connected to a board temporarily when the first sensor is out of order.
Patent KR-20090057488-A (KR)
Title: Packet analyzer of wireless sensor network
Inventor: LEE CHANG WOO
IPC: H04L12/26
Filed: 2007-12-03
Abstract: A packet analysis equipment of a wireless sensor network including an embedded board is provided to supply packet analysis information in a remote access by using Ethernet and detect a channel used in the wireless sensor network. An RF(Radio Frequency) transmitter and a receiver(235) transmit and receive a plurality of sensor nodes and a packet. A microcomputer(233) analyzes and processes the received packet. An embedded board performs remote access with a developer. The embedded OS(Operating System) of an embedded linux or a Windows CE(Consumer Electronics) base embedded OS are used by the embedded board. The embedded board is used as the server. A personal computer of the developer is used by the client.
Patent KR-20090059854-A (KR)
Title: Method for predicting static recrystallization fraction of steel material
Inventor: KIM HYUN JIN
IPC: B21D11/00
Filed: 2007-12-07
Abstract: A method for predicting static recrystallization fraction of steel material is provided to predict accurate recrystallization velocity and fraction in various processing conditions, based on data about the size distribution of austenite crystal. A method for predicting static recrystallization fraction of steel material comprises a step of obtaining softening fraction value according to the deformation amount in a torsion test, a step of determining as recrystallization fraction when the value converges the specific value, a step of varying the torsion test condition and obtaining the time during which the recrystallization fraction reaches 50% and apparent recrystallization activation energy constant, a step of calculating the time for 50% recrystallization completion of a specimen surface by using the time and the rate of 50% recrystallization completion, a step of calculating the time for 50% recrystallization completion on the radial regions of the specimen, a step of calculating recrystallization fraction on the surface and radial regions of the specimen and radial direction by using the calculated time, and a step of calculating average recrystallization fraction.
Patent KR-20090060584-A (KR)
Title: Digital analog converter and the control method
Inventor: LEE KANG BOK
IPC: H03M1/66
Filed: 2007-12-10
Abstract: A digital analog converter and an operating method thereof are provided to control an electrical parameter without maintaining linearity in a system requiring a point to point control based on a lookup table by outputting an increasing analog value with the point to point nonlinear characteristic by corresponding to a digital input value. A digital analog converter converts a digital input value comprised of N bits into the 2N analog values and outputs the converted value. A nonlinear reference signal generator(20) includes a decoder and a signal generator(24). A signal generator includes a power unit, a device part, and a voltage divider. A power supply unit supplies the reference voltage. The device part includes 2n devices with different impedance connected in series. The voltage divider outputs the distribution voltage in proportion to the sum of impedance about the number of devices corresponding to the digital input value among the 2n devices as the analog value.
Patent KR-20080056087-A (KR)
Title: Ceramic heater
Inventor: TORISHO TAKESHI
IPC: H01L21/324
Filed: 2007-12-12
Abstract: A ceramic heater is provided to make a widthwise current density uniform by forming a slit in the bending part of a print electrode such that the slit is extended from the inner circumference of a heating part to the outer circumference in the widthwise direction of the print electrode. A heating part is made of ceramics. A print electrode is continuously formed as a swirl shape along the circumferential direction of the heating part. A slit(51) is extended from the inner circumference of the heating part to the outer circumference in the widthwise direction of the print electrode. The slit is formed in a bending part(33,35,37,39,41,43,45,47,49) of a convex shape toward the outer circumference of the print electrode. When the length of the slit is x, the width of the slit is y, and an interval between adjacent print electrode is z, x, y and z are selected wherein delta T obtained by the following mathematic formula 1 is lower than 2 °C. The x, y, z and delta T are substituted in the following mathematic formula 2 to calculate a surface ratio(S), and the x, y and z are set in a manner that the calculated surface ratio becomes 5 percent or lower. Mathematic formula 1 is delta T=(-0.06y-0.773)x-0.24y+0.424z+1.522. Mathematic formula 2 is S=(0.082z+2.5839)delta T^2+(-1.6817z-0.0561)delta T+(1.4788z-1.6119).
Patent KR-20090062771-A (KR)
Title: Active steering apparatus for car
Inventor: LEE MIN SU
IPC: B62D3/02
Filed: 2007-12-13
Abstract: An active steering apparatus using a bevel gear for vehicles is provided to increase the degree of position freedom of a steering torque assisting motor by using a bevel gear. An active steering apparatus using a bevel gear for vehicles comprises: a steering shaft bevel gear(20) mounted in a horizontal direction; a fixing bevel gear(30) rotating while engaged with one side of the steering shaft bevel gear; an operating bevel gear(40) engaged with the other side of the steering shaft bevel gear; a final output bevel gear(50) whose one side is engaged with the fixing bevel gear and the other side is engaged with a rack gear. The steering shaft bevel gear is operated according to steering input delivered through a steering inputting unit(22). The operating bevel gear is moved back and forth according to the operation of a gear ratio converting motor(44) combined with a central axis(42) in order to convert a gear ratio. A steering torque assisting motor(54) is mounted on a central axis(52) of the final output bevel gear.