baber/WOPTO huggingface dataset:
Patent KR-20090032634-A (KR)
Title: Servo system of permanent magnetic synchronous motors separated power supplies
Inventor: LEE YOUNG SEOK
IPC: H02P6/00
Filed: 2007-09-28
Abstract: A servo system of PMSM(Permanent Magnetic Synchronous Motor) is provided to facilitate maintenance and repair of a servo drive by performing an overall variable monitoring of the servo drive through a CAN(Control Area Network) communication. A servo system(100) of PMSM includes a plurality of servo drives and a single power source module(140). The servo drive controls a PMSM(200) according to a signal of a high rank controller or a motion board. The power source module supplies a power source supplied from an external power supply part to the servo drive. The servo drive includes a signal input/output part, a sensing part, an A/D converter, and a controller. The signal input/output part performs a signal delivery of the high rank controller or the motion board. The sensing part senses a current and a voltage for controlling the PMSM. The A/D converter converts an analog signal inputted form the signal input/output part and the sensing part into a digital signal. The controller stores data required to a control of the PMSM, and outputs a control signal for controlling the PMSM.
Patent KR-20090036185-A (KR)
Inventor: AN KI WOON
IPC: H04B1/40
Filed: 2007-10-09
Abstract: An earphone of a portable phone for reducing the electromagnetic waves is provided to enhance the convenience in use and reduce the exposure by the electromagnetic waves by using a separate line and an automatic winding unit. An earphone including a line(3) is connected to an automatic winding unit(4) using a coil spring which is installed inside a cellular phone. A housing(2) of the earphone is formed in a cellular phone case. In an upper end of the cellular phone, a transmission microphone(5) is additionally installed. The existing transceiving speaker(6) and microphone are alternatively operated according to whether a line earphone and the transmission microphone are used. In one part of the main body case of the cellular phone, a keeping box is formed.
Patent KR-20090036827-A (KR)
Title: 감소된 면적을 갖는 가장자리 센스 앰프
Inventor: KIM JONG SU
IPC: G11C11/4091
Filed: 2007-10-10
Abstract: 레이아웃 효율을 개선하여 보다 많은 수의 유효 넷 다이를 확보할 수 가장자리 센스 앰프를 개시한다. 개시된 본 발명의 가장자리 센스 앰프는, 소정 방향으로 평행하게 연장되는 비트라인쌍을 포함하는 뱅크의 가장자리에 배치되며 상기 비트라인쌍을 프리차지시키는 프리차지 유닛, 상기 비트라인쌍의 전위차를 감지증폭하는 래치 유닛, 상기 뱅크 내측의 비트라인쌍을 균등화하는 내부 이퀄라이징 유닛, 상기 뱅크 내측의 비트라인쌍의 센싱동작을 제어하는 아이솔레이션 유닛, 및 상기 비트라인쌍의 신호를 데이터 라인쪽으로 전달하는 데이터 전달 유닛을 포함한다. 이때, 상기 래치 유닛을 중심으로 뱅크의 가장자리측에, 상기 프리차지 유닛만이 배치되고, 상기 프리차지 유닛은 이퀄라이징 전압에 의해 활성화되어 상기 비트라인쌍에 프리차지 전압을 전달하는 한 쌍의 모스 트랜지스터로 구성된다.  
       
     가장자리 센스앰프, 이퀄라이징 유닛, 아이솔레이션 유닛, 레이아웃
Patent KR-20090040644-A (KR)
Title: Parking management system and method for operating the same
Inventor: SUNG YONG CHUL
IPC: G08G1/14
Filed: 2007-10-22
Abstract: A parking management system and a method for operating the same are provided to improve efficiency of parking management by performing the parking guidance and the parking position tracking based on the license plate read in an RFID tag. A camera(22) photographs a license plate of vehicles entering a parking lot and reads the license plate. A parking ticket issuer(21) issues the parking ticket with an RFID tag type to record an entering time and the read number. A guidance broadcasting unit(24) guides the vehicle to an empty place through a speaker or monitor. A search terminal(25) informs a driver of a position of the parked vehicle. A sever(20) stores the license plate number and the entering time recorded in the parking ticket and receives the number read by the RFID reader and performs the guidance broadcasting to guide the vehicle to the empty place. When the parking is completed, the sever receives and stores the parking position and the number from the RFID reader.
Patent KR-20090041070-A (KR)
Title: Method for manufacturing a thin film transistor array substrate
Inventor: KWACK HEE YOUNG
IPC: H01L29/786
Filed: 2007-10-23
Abstract: A method for manufacturing a thin film transistor array substrate is provided to reduce the width of a semiconductor layer tail exposed to the outside of the data wiring by performing an etching process using a double-stepped photoresist pattern of a double step when forming a data wiring. A gate electrode(101a) and a gate wiring are formed on a substrate(100). A gate insulating layer(104), an amorphous silicon layer, and a third conductive layer are successively formed on the substrate with the gate electrode and the gate wiring. First and second photoresist patterns(102b) are formed on the metal layer by using a diffraction exposure mask. The source/drain electrode pattern and a data wiring pattern are formed by etching the metal layer in the first etching through the first and second photoresist patterns. A third photoresist pattern and a fourth photoresist pattern are formed by ashing the first and second photoresist patterns. A first semiconductor layer under the source/drain electrode pattern and a second semiconductor layer(106c) under the data wiring pattern are formed by etching the semiconductor layer as the second etching.
Patent KR-20090041508-A (KR)
Inventor: MIN WOONG KEE
IPC: G09G3/294
Filed: 2007-10-24
Abstract: 본 발명은 플라즈마 디스플레이 패널 및 그를 포함하는 플라즈마 디스플레이 장치에 관한 것이다. 
     본 발명의 일실시예에 따른 플라즈마 디스플레이 장치는 서로 나란한 스캔 전극과 서스테인 전극을 포함하는 플라즈마 디스플레이 패널과, 프레임(Frame)의 복수의 서브필드(Sub-Field) 중 적어도 하나의 서브필드의 서스테인 기간에서 스캔 전극 또는 서스테인 전극 중 적어도 하나에 서스테인 신호를 공급하는 구동부를 포함하고, 플라즈마 디스플레이 패널은 스캔 전극과 서스테인 전극이 배치되는 전면 기판과, 전면 기판과 대항되게 배치되는 후면 기판과, 전면 기판과 후면 기판 사이에서 방전 셀을 구획하는 격벽 및 방전 셀 내에 배치되며 형광체 재질과 첨가물 재질을 포함하는 형광체 층을 포함하고, 방전 셀 내에서 스캔 전극과 서스테인 전극 간의 간격을 A[㎛]라고 하고, 격벽의 높이를 B[㎛]라 할 때, A는 B보다 크거나 같을 수 있다.
Patent KR-20080055616-A (KR)
Title: Display device
Inventor: SUZUKI TSUNEO
IPC: H05B33/00
Filed: 2007-10-26
Abstract: A display device is provided to display a design of an object to be displayed brightly in illuminating the object and improve an outer appearance when the illumination is not used. A display device includes a transparent plate(1), a first reflective material(3), a second reflective material(4), and a light source(5). The transparent has at least one recessed unit, which is formed on a rear plane. The recessed unit forms a pattern corresponding to a design to be displayed. The first reflective material is arranged on a region except the recessed unit of the transparent plate and a rear plane of the transparent. The first reflective material has light reflectivity on an opposite plane to the transparent plate. The second reflective material is arranged on a region having the recessed unit of the transparent plate and the rear plane of the transparent. The second reflective material has light reflectivity on the opposite plane to the transparent plate. The light source is arranged on the rear plane of the transparent plane, and does not emit the light from the region except the recessed unit of the transparent plate to a front side of the transparent plate in case of illuminating the object. The light source emits the light to the front side of the transparent plate through the recessed unit of the transparent plate.
Patent KR-20090047715-A (KR)
Inventor: SHIN KYOUNG SU
IPC: B60C9/18
Filed: 2007-11-08
Abstract: 본 발명은 중하중 차량용 타이어에 관한 것으로 특히 제2벨트와 제3벨트 끝단의 분리현상을 개선한 타이어를 제공하기 위한 것이다. 본 발명은, 제2벨트와 제3벨트의 단부가 서로 이어지도록 함으로서 제2벨트와 제3벨트의 단부가 분리될래야 분리될 수 없도록 구성시키되, 특히, 제2벨트를 양측으로 연장시키고 제2벨트의 양측에 에지쿠션을 설치한 후 제2벨트 양단으로 에지쿠션을 감싸 올려 제3벨트를 구성시켜서 된 타이어를 제공한다. 
       
     중하중 차량용 타이어, 벨트 분리, 전단응력, 에지 쿠션.
Patent KR-20090049777-A (KR)
Inventor: JO JO YEON
IPC: G09G3/20
Filed: 2007-11-14
Abstract: 본 발명은 표시 장치에 관한 것으로서, 본 발명에 따른 표시 장치는 화상 형성을 위한 제어 신호 및 데이터 신호를 발생하는 타이밍 컨트롤러와, 데이터 신호를 기록하는 메모리 소자와, 상기 타이밍 컨트롤러와 상기 메모리 소자를 연결하는 아이투시 버스를 포함하며, 상기 아이투시 버스는 각각 일단이 상기 메모리 소자와 연결되고 타단이 상기 타이밍 컨트롤러와 연결되는 시리얼 클록 라인 및 시리얼 데이터 라인과, 상기 시리얼 클록 라인 및 상기 시리얼 데이터 라인에 각각 연결된 디커플링캡을 포함한다.
Patent KR-20090050389-A (KR)
Inventor: PARK WEON HO
IPC: H01L21/8247
Filed: 2007-11-15
Abstract: 게이트 구조물과 이를 포함하는 스플릿 구조의 비 휘발성 메모리 셀 및 이들의 제조 방법이 개시되어 있다. 상기 게이트 구조물은 유전막 패턴, 플로팅 게이트, 마스크 산화막, 터널 산화막 및 워드 라인을 포함한다. 상기 유전막 패턴은 상기 기판 상에 형성되어 서로 다른 두께를 갖는다. 상기  플로팅 게이트는 유전막 패턴 상에 위치하고, 단차를 가지면서 양 단부에 날카로운 팁을 갖는다. 상기 마스크 산화막은 상기 플로팅 게이트 상에 위치한다. 상기 터널 산화막은 플로팅 게이트의 일 측과 면접하도록 기판에 형성된다. 상기 워드 라인은 상기 터널 산화막 및 상기 마스크 산화막의 일부와 면접하도록 위치한다. 상술한 구조의 게이트 구조물을 포함하는 비 휘발성 메모리 셀은 프로그램의 효율이 증가될 수 있다.
Patent KR-20090052552-A (KR)
Title: 인공치아 구조물
Inventor: PARK YOUNG WOO
IPC: A61C8/00
Filed: 2007-11-21
Abstract: 치조골에 보철물을 고정하는 인공치아 구조물은; 치조골에 결합되며, 홈부를 형성하는 인공치근과; 홈부에 삽입되어 고정되며, 보철물이 결합되는 지대치와; 인공치근과 지대치를 회전방향상에서 상대 고정시키는 회전방지부;를 포함한다.  이에 의하여 지대치가 외력에 의해서 인공치근으로부터 회전하여 인공치근으로부터 이격되는 것을 방지할 수 있다. 
       
     홈부, 인공치근, 회전방지부 및 지대치
Patent KR-20090053646-A (KR)
Inventor: KIM JAE HYUNG
IPC: G06Q50/10
Filed: 2007-11-23
Abstract: 본 발명은 피씨방 광고수익 처리방법 및 시스템과 이를 위한 기록매체에 관한 것으로서, 본 발명에 따른 피씨방 광고수익 처리 방법은, 피씨방-PC 사용 임대 서비스 사업장-에 구비된 피씨방 단말로 제공된 광고 데이터에 대한 광고수익금을 확인하는 단계와, 상기 확인된 광고수익금 중 상기 광고 수익금을 발생시킨 피씨방 단말 이용 고객에게 배분할 광고 수익금을 산출하는 단계와, 상기 산출된 광고 수익금에 대응하는 포인트(또는 전자화폐)를 상기 피씨방 단말 이용 고객정보와 연결하여 저장매체에 저장하는 단계를 포함한다. 
       
     피씨방광고, 피씨방이용료
Patent KR-20090055928-A (KR)
Inventor: KIM YEON JUNG
IPC: G06F17/30
Filed: 2007-11-29
Abstract: A search area extension method of a space query and a system of performing the method for increasing the search speed and search performance about the search query are provided to prevent the unnecessary area search by performing the area extension by determining an extension direction about the search area. A search area expanding system sets up a cell including a query location as an initial query area. The search area expanding system performs search about space query in the initial query area(S202). The search area expanding system determines whether a query result satisfies the information about the spatial query(S203). The search area expanding system expands the query area according to area expansion direction(S205).
Patent KR-20090056192-A (KR)
Title: Transfer tube assembly of fuel pump module for vehicle
Inventor: RYU JAE OUK
IPC: F02M37/10
Filed: 2007-11-30
Abstract: A transfer tube assembly of a fuel pump module for a vehicle is provided to verify the joining of a transfer tube through resistance value detected from the resistance value measuring contact point whether the transfer tube is combined by joining together a wire harness and a transfer tube connector. A transfer tube assembly of a fuel pump module for a vehicle comprises a main fuel pump(10) letting a fuel pump system to feed a fuel; a sub sender(20) feeding residual fuel into the main fuel pump; a wire harness(30) indicating the fuel amount of the sub sender by connecting the main fuel pump with the sub sender; and a transfer tube(40) delivering the residual fuel of the sub sender into the main fuel pump. The wire harness and the transfer tube is joined together in order to perform each of functions simultaneously.
Patent KR-20090056261-A (KR)
Title: Method of forming transistor in semiconductir device
Inventor: KOO MIN GYU
IPC: H01L21/336
Filed: 2007-11-30
Abstract: A method of forming transistor in a semiconductor device is provided to reduce the number of the reticles of the process of manufacturing semiconductor and the necessary cost of the process. The method of forming the transistor of the semiconductor device comprises a step of preparing the semiconductor substrate(100), a step of performing the first ion injection process, and a step of performing the secondary ion implantation process. The step of preparing the semiconductor substrate is performed in order to prepare for the semiconductor substrate having three region frames(LVN, HVN1, HVN2). The step of performing the first ion injection process is performed to inject impurity ions into the first area of the semiconductor substrate. The first ion injection process controls the threshold voltage of the first area. The step of performing the secondary ion implantation process is performed to inject impurity ions into the third region of the semiconductor substrate. The secondary ion implantation process controls the threshold voltage of the third region.
Patent KR-20090057805-A (KR)
Title: Apparatus for attaching display panel for stereoscopic image
Inventor: HWANG JAE SEOK
IPC: G02F1/13
Filed: 2007-12-03
Abstract: An apparatus for attaching a display panel for a stereoscopic image is provided to enable fine alignment between a display panel and a stereographic panel when boning the display panel with the stereo lens panel. An apparatus for attaching a display panel for a stereoscopic image includes an upper chamber(110), a lower chamber(120), an upper chuck, a lower chuck and a stage. The lower chamber forms a bonding space(111) by being attached to the upper chamber, and the upper chuck which is placed in the upper direction of the lower chamber is attached to the display panel. The stage moves the upper chuck horizontally.
Patent KR-20090058721-A (KR)
Title: Aerosolization device
Inventor: LIU HAN CHANG
IPC: B05B1/02
Filed: 2007-12-05
Abstract: An aerosol generator is provided to control liquid through a control unit in case supply of the liquid is suspended or no liquid remains by using a sensor unit in the aerosol generator. An aerosol generator comprises the followings: a liquid storing unit(10); an aerosol generating unit(20) spraying the liquid in a storing vessel to outside and installed at an end opening of the storing vessel; a sensor unit(30) monitoring electrical property causing property change; and a control unit(40) operating and suspending the aerosol generating unit according to change of measured electrical property.
Patent KR-20090060823-A (KR)
Title: Monitoring method for catalyst of sooty filtering apparatus
Inventor: KU YOU SUN
IPC: F01N9/00
Filed: 2007-12-10
Abstract: A catalyst monitoring method of a diesel particulate filter is provided to prevent the exhaustion of the NOx and the degradation of acceleration by changing the lean state of intake air volume into rich state in DFCO(Deceleration Fuel Cut-Off) state. A catalyst monitoring method of a diesel particulate filter comprises: a step(S10) performing DFCO; a step(S12) converting the intake air volume to the lean state; a step(S14) checking the amount of oxygen sensed with a front oxygen sensor; a step(S16) checking the amount of oxygen sensed by the rear oxygen sensor; a step(S18) stopping the DFCO; and a step(S20) monitoring the oxidation of the catalyst of a diesel particulate filter.
Patent KR-20090061332-A (KR)
Title: 열매체 다목적 전기보일러
Inventor: RYU JAI HAN
IPC: F24H1/20
Filed: 2007-12-11
Abstract: 본 발명은, 열매체 다목적 전기보일러에 관한 것으로서, 일정한 지름 및 높이를 갖고 내부가 중공 된 형상으로 형성된 내압탱크와, 내압탱크의 상부에 같은 지름과 일정한 높이를 가진 냉수 예열 탱크와, 그 외주의 길이 방향을 따라 일정 두께의 보온 단열재를 모든 외주 면에 충진 하고, 제작 조립의 편의를 위해 상, 중, 하부로 나누어진 케이스로 치장 된 보일러 본체 안에, 열 교환이 이루어지는 나선형 모양의 동 파이프, 혹은 스텐파이프 코일이 설치되고, 본 파이프 코일 내부를 지나는 급탕과 난방에 쓰일 물을 효과적으로 데우기 위한, 열매체 조성물을 용기의 용적량 100% 대비9.5% 내지 10.5%만을 주입하여 매체의 팽창 활동 공간을 확보 하여 주입하고, 기화 상승하는 열매체의 열전달 작용을 활발토록 저항을 줄이고, 잡 공기를 제거하며, 팽창 압을 반감시키기 위한 중공 단속 구와, 열매체 조성물에 열을 전달하는 열원이 될 전기 카트리지히터와 히터를 수용하는 고정부재인 히터포켓과, 급배수를 위한 배관 이음부재들과, 본체를 안정되게 지탱하는 받침대와, 제어 부(컨트롤 박스)를 포함하는 것을 특징으로 한다. 폭발 및 화재의 염려가 전혀 없고, 누전차단, 온도과열방지, 누수 감지 센스 등 각종 안전장치의 부착으로 사용이 절대 안전하고, 연료를 주기적으로 주유하거나 교체하지 않으며, 전기에 의해 자동 작동되므로 사용이 간편하고, 연기, 소음, 그을음 분진, 냄새가 발생하지 않아 쾌적하며, 산소소모가 없고 연소배기 가스가 발생하지 않아 대기오염이 없어 친환경 적이고, 화석연료의 과소비로 인한 지하자원의 고갈로 인해 지구온난화는  물론 고유가 시대에 유가상승에 따른 난방비의 부담을 획기적으로 줄일 수 있고 심야전기 보일러 기타 보일러 비해 설치비 부담이 현저히 낮으며, 태양광 발전 등에 의해 생산된 천연 전류를 사용하거나 일반전기의 적은 소비전력으로 호환이 가능하게 연구개발 하였으므로 낮은 전기요금으로 난방이 가능해 매우 경제적이며, 바닥 난방이 필요한 곳이면 어디든 사용이 가능하며, 기존 열효율이 낮은 보일러를 교체하여 설치하기도 쉬우며, 재질과 장치들에 의해, 제품의 수명을 연장 할 수 있는 이점과 아울러 무게가 가볍고 부피가 작아, 이동, 운반과 설치 및 철거가 쉽고, 보일러실 공간을 아주 적게 하여도 되므로 실내 공간 활용도를 높일 수 있는 등 많은 장점들을 가지고 있다. 
       
     열매체 조성물, 잠열, 팽창계수, 중공, 상변화, 태양전지, 천연에너지, 열전달
Patent KR-20090061801-A (KR)
Title: Auction method of advertisement, recording medium and auction system of advertisement
Inventor: LEE MOON SANG
IPC: G06Q30/00
Filed: 2007-12-12
Abstract: An auction method of advertisement, a recording medium and an auction system of an advertisement are provided to maximize an advertisement effect by making a successful bid based on the advertiser's determination of advertising time. A server receives bidding information including time information from advertiser terminals(210), and the advertiser terminals are connected to the server through a wire/wireless communication network or a broadcasting network. The server selects one of plural advertiser terminals based on the time information from the bidding information(220). The server transmits advertisement contents to a client(230).
Patent KR-20090061958-A (KR)
Title: Packing apparatus of terahertz device
Inventor: CHOI SANG KUK
IPC: H01L23/12
Filed: 2007-12-12
Abstract: A packing apparatus of terahertz device is provided to smoothly measure the electrical characteristic of the independent electrical device. The packing apparatus of terahertz device comprises a terahertz wave device(31), a device substrate(32), a ball lens block(33), a lower case(34) and an upper case(35). The terahertz wave device has the specific active region. The active region performs detection and the radiation of the terahertz wave. The device substrate has the opening region on the center. The terahertz wave device is settled in the device substrate. The opening area of the device substrate arranges with the active region of the terahertz wave device. The device substrate electrically connects with the terahertz wave device. The ball lens block is arranged on the terahertz wave device. The lower part and upper cases surround the device substrate and terahertz wave device. The lower part and upper cases expose the active region of the terahertz wave device.
Patent KR-20090063342-A (KR)
Title: Dust separating apparatus of vacuum cleaner
Inventor: LEE DONG JAE
IPC: A47L9/16
Filed: 2007-12-14
Abstract: A dust separation apparatus of vacuum cleaner is provided to prevent from chocking of dust separation unit by flowing in to the dust separation unit. A dust separation apparatus(1) of vacuum cleaner comprises a flow guide tube(40), division unit(30), dust separation unit(10), and collection device(20). The flow guide tube guides the flow of air and dust. The division unit distributes air and dust along the flow guide tube. The dust separation unit separates dust from the air in the division unit. The collection device is connected to the division unit. The collection device is formed to separate to a first dust storage part and a second dust storage part. The first dust storage part contains a part of dust along the flow guide tube. The second storage part contains dust separated from the dust separation unit.
Patent KR-20090063700-A (KR)
Title: Integrated quantum dot optical device
Inventor: LEE DONG HAN
IPC: H01S5/30
Filed: 2007-12-14
Abstract: A semiconductor quantum dot integrated optical device is provided to reduce a size by integrating a semiconductor optical amplifier and a semiconductor laser diode for raman pumping on one plane of a wafer. A quantum dot integrated optical device includes a quantum dot laser diode(110) for raman pumping and a quantum dot semiconductor optical amplifier(130) in series or parallel. The quantum dot laser diode for the raman pumping uses the quantum dot layer on the semiconductor substrate with one or more quantum dot layer as an active layer. An operational wavelength of the quantum dot laser diode for raman pumping is controlled by the length of the active layer of the quantum dot laser diode for raman pumping, the current density applied to the quantum dot laser diode for raman pumping and a combination thereof. The operational wavelength of the quantum dot semiconductor optical amplifier is controlled by the length of the active layer of the quantum dot semiconductor optical amplifier, the current density applied to the quantum dot semiconductor optical amplifier, and the combination thereof. The quantum dot laser diode for raman pumping and the quantum dot semiconductor optical amplifier are independently controlled.
Patent KR-20090067525-A (KR)
Title: Socket for holding backlight lamp
Inventor: CHOI BYUNG HWAN
IPC: H01R33/08
Filed: 2007-12-21
Abstract: A backlight lamp fixing socket is provided to lengthen a use period of a contact terminal by applying no excessive stress to the contact terminal. A backlight lamp fixing socket connects a backlight lamp terminal to a PCB(Printed Circuit Board)(40) in a flat display device. The backlight lamp fixing socket fixes a terminal of a backlight lamp. The backlight lamp fixing socket includes a housing(10) and a contact terminal(20). The housing includes a receiving space(11) for receiving the backlight lamp terminal at the inside. The contact terminal keeps contact with the backlight lamp terminal in the receiving space. The contact terminal includes a rectangular body unit, terminal contacting parts, supporting parts, a keeping part, PCB contacting parts, and a flat sub contact terminal(42). The sub contact terminal is elastically combined with the PCB contacting part by coupling with the PCB.
Patent KR-20090067660-A (KR)
Title: Device for driving ultrasonic motor digital-controlled
Inventor: MOK IM SOO
IPC: H02N2/14
Filed: 2007-12-21
Abstract: A device for driving an ultrasonic motor is provided to prevent distortion of a signal due to the change of load like the rotation of the motor by controlling a frequency, a phase, and an output voltage of a driving signal through a CPU digitally. A device for controlling an ultrasonic motor includes a sine wave generator(110), a DA(Digital-analog) converter, an amplifier(130a), an analog switch(140a), and a motor driver(150a). The sine wave generator generates two phase sine wave signal with a constant phase difference according to the frequency and the phase inputted from a CPU(20). The DA converter converts two-phase sine wave signal from digital to analog. The amplifier amplifies the converted two-phase signal according to the gain control signal inputted from the CPU. An analog switch switches the amplified two-phase signal according to the control signal of the pulse inputted from the CPU. The motor driver drives the ultrasonic motor by converting the switched two-phase signal to the high voltage.
Patent KR-20090067674-A (KR)
Title: Frame unit for valuation internal force with adjustable distance
Inventor: PARK PONG KUN
IPC: G01M5/00
Filed: 2007-12-21
Abstract: A distance-controllable strength evaluation frame facility is provided to vary the length of the frame facility according to a frame length variation to easily adjust a distance between a frame and an anti-skid frame. A distance-controllable strength evaluation frame facility includes a floor(100), a wall(200), a frame(300), a tapered face, an anti-skid frame(700), an actuator(600), a distance-variable frame(720), and a fixed frame(710). The frame fixes a test object onto the floor. The tapered face is formed upward at one end of the frame. The anti-skid frame has a tapered face corresponding to the tapered face and is fixed to the floor. The anti-skid frame is not fixed to the floor and movable on the floor. The actuator applies traverse force to the wall and evaluates the strength of the test object. The fixed frame is fixed to the floor.
Patent KR-20090067922-A (KR)
Inventor: OH SEO JONG
IPC: H01L21/027
Filed: 2007-12-21
Abstract: An exposure mask for an alignment key and a method for measuring alignment are provided to improve overlap margin in an exposure process by measuring alignment degree of an X-axis or a Y-axis even though warpage phenomenon occurs at wafer edges. A photo mask for an alignment key(200) includes a cross-shaped floodlight pattern and a rectangular floodlight pattern. The cross-shaped floodlight pattern(210) is located at a central portion of the alignment key. The rectangular floodlight patterns are located at both ends of the cross-shaped floodlight pattern. The rectangular floodlight patterns are equally prepared in a first direction and a second direction.