baber/WOPTO huggingface dataset:
Patent KR-20020053720-A (KR)
Inventor: DI SERIO EMILE
IPC: B22D31/00
Filed: 2001-12-20
Abstract: PURPOSE: A new method for manufacturing parts that are moulded then forged according to the invention that preserves the recesses of the cast preform and that eliminates all or some of the subsequent tooling operations which were previously necessary is provided. CONSTITUTION: The method for manufacturing parts that are molded then forged comprising one or more recesses comprises the steps of creasing a foundry preform(1) including one or more pierced or blind recesses or cavities that match the useful or required shapes of an end part to be obtained; transferring the preform to a tunnel furnace that ensures a uniform temperature of the preform; positioning the foundry preform in a heading die disposed on a press; introducing at least one multidirectional rod into at least one of a recess and a cavity of the foundry preform, according to a command prior to the forging operation; performing a heading operation on the preform that receives the at least one rod to create a forged preform, when the at least one rod is temporarily positioned inside the at least one of a recess and a cavity; raising an upper forging die to free the forged preform; withdrawing the at least one rod positioned in the at least one of a recess(1c) and a cavity; and removing the forged preform.
Patent KR-20030052434-A (KR)
Title: A testing method for z-quality of structural steels
Inventor: CHOI GI YONG
IPC: G01N3/00
Filed: 2001-12-21
Abstract: PURPOSE: A method for evaluating quality of a structural steel is provided to effectively evaluate characteristics of the structural steel in a thickness direction thereof by creating a breakage at a thickness center of the structural steel when performing a tensile test. CONSTITUTION: A sample piece(10), which is broken through a tensile test, is cut in such a manner that a sectional area of the sample piece(10) exceeds 2000mm¬2. A U-shaped or V-shaped notch is formed at the center of the sample piece(10) in such a manner that the center of the sample piece(10) is broken while carrying out the tensile test. An auxiliary plate is welded to the sample piece(10) through an electric beam welding process such that a breakage occurs at the U-shaped or V-shaped notch, thereby evaluating characteristics of the sample piece(10) in a thickness direction thereof.
Patent KR-20030054454-A (KR)
Title: a
Inventor: HUH HAENG PAL
IPC: H04N5/225
Filed: 2001-12-26
Abstract: PURPOSE: A data switching system and method for overcoming restriction on a data output speed of a linear CCD camera set in a satellite are provided to allow the camera to carry out its function without deteriorating picture quality of video data or losing video data when the altitude of the satellite is changed or the satellite is tilted. CONSTITUTION: A data switching system includes an FPA(301), a CCD data processor(304), data multiplexers(305) and a switch(306). The FPA is composed of a PAN channel FPA(302) and an MS channel FPA(303) that convert input optical video signals into analog video signals. The CCD data processor tunes the analog video signals. The data multiplexers multiplexes the analog video signals according to an output speed. The switch controls the multiplexed analog video signals to be output as video data.
Patent KR-20030054821-A (KR)
Title: Apparatus and method for high speed encryption/decryption using TCP/IP base network having selective encryption function
Inventor: JUNG JUN MOK
IPC: H04L9/00
Filed: 2001-12-26
Abstract: PURPOSE: A high-speed coding/decoding apparatus and a method thereof having a coding function for a TCP/IP(Transmission Control Protocol/Internet Protocol)-based network are provided to improve the stability of communication by selectively coding/decoding inputted packets based on header information of the packets. CONSTITUTION: A packet input unit(301) receives a packet from a network interface(400). A packet header analyzing unit(302) analyzes a header of a packet to confirm that coding/decoding policy information exists and determines whether or not a packet coding/decoding is performed. A coding/decoding policy database(303) has the custody of policy information about a coding/decoding packet and manages it. A high-speed coding/decoding processing unit(304) performs a coding/decoding on a data portion by using a coding/decoding chip. A packet output unit(305) outputs the coded/decoded packet and a non-coded/decoded packet to a network interface.
Patent KR-20030056620-A (KR)
Title: Real time fax transmitting limit method using dual lines function
Inventor: LEE GEON IL
IPC: H04N1/44
Filed: 2001-12-28
Abstract: PURPOSE: A method for restricting facsimile transmission using a dual line in real time is provided to allow a facsimile user to confirm whether transmission is available or not in real time. CONSTITUTION: When a user sets a facsimile transmission mode to the first CPU of a facsimile device through a panel input unit, the first CPU transmits the transmission mode and a counterpart's facsimile number inputted by the user to the second CPU of the facsimile device(302). The second CPU sends the facsimile number received through the second line to a facsimile security center to request the center to approve facsimile transmission(304). The facsimile security center judges whether or not transmission of the inputted facsimile number is available and transmits a facsimile transmission authentication signal or disapprobation signal to the second CPU(306,310,312). The first CPU transmits video data to the counterpart's facsimile device through the first line when the facsimile transmission authentication signal is sent from the second CPU.
Patent KR-20030056679-A (KR)
Inventor: KIM HYEON CHEOL
IPC: H01L21/68
Filed: 2001-12-28
Abstract: PURPOSE: A wafer handler is provided to be capable of preventing the contamination and damage of a wafer surface due to the decrease of vacuum force by partially holding the lateral portion of the wafer using an air cylinder. CONSTITUTION: A wafer handler is provided with a handle part(34) having an inner space and a wafer holding part connected with the handle part for transferring a wafer by being driven with air. The wafer holding part includes a wafer grip bar(30), a fixing chuck(41) formed at one end of the wafer grip bar for fixing the wafer, a coupled chuck(42) formed at the other end of the wafer grip bar corresponding to the fixing chuck, an air cylinder(50) loaded in the inner portion of the handle for driving the coupled chuck by using air, and a cylinder operating button(60) for controlling the air.
Patent KR-20030056858-A (KR)
Title: Liquid crystal display device and method for manufacturing the same
Inventor: HONG SUN GWANG
IPC: G03F1/00
Filed: 2001-12-28
Abstract: PURPOSE: An exposure mask of an LCD(Liquid Crystal Display) and a method for exposure are provided to reduce the number of shots by changing the shape of a mask and simultaneously exposing a panel with the peripheral area. CONSTITUTION: In a mask, a panel(11) exposure area is placed in the central portion of the reticle and a top(12), a bottom(15), a left(13), and a right(14) exposure area are placed in the upper, lower, left and right portions of the panel exposure area. Herein, alignment keys or test patterns are formed in the top, bottom, left and right portions of the panel. Necessary parts are exposed simultaneously in each exposure area by using a blade.
Patent KR-20030058425-A (KR)
Title: Dual sealed roller for undercarriage roller of construction device
Inventor: LEE YEONG GEUN
IPC: B62D55/088
Filed: 2001-12-31
Abstract: PURPOSE: A double sealing structure of a roller of an undercarriage for construction equipment is provided to prevent foreign materials form flowing in by improving an outer structure of a floating seal of the roller. CONSTITUTION: A double sealing structure of a roller of an undercarriage for construction equipment comprises a rotating body comprising a roller body(10); a shaft; a bush; a group seal ring(41) and an O-ring and a fixed body comprising a group seal ring(42); an O-ring, a collar(60) and a pin. A cutting ring(80) is installed to the roller body and the collar to prevent foreign materials from flowing in. A contacting portion of the cutting ring to the roller body is made of wear resistant material and an installing portion to a fluting groove(61) of the collar is made of elastic material. Thereby, early wearing of the group seal ring is prevented and durability of the roller is improved by cutting foreign materials with the double sealing structure.
Patent KR-20010079663-A (KR)
IPC: B60T1/06
Filed: 1999-08-14
Abstract: 이 발명은 주차로크를 물고 있거나 풀려있는 고정구(17)가 연결부(19)를 거쳐서 작동되어지는 그러한 방법으로 물림원판(2)의 회전을 일으키는 것에 의하여, 작동장치를 거쳐서 운전자의 의하여 발신된 작동신호에 기초하여 물려지거나 풀려지는 주차로크에 관한 것이다. 
     물려있는 상태에서는 비상의 풀림 원판(3)은 회전하게 하는 수동의 작동장치를 거쳐서, 보울트(4)가 물림 원판(2)을 동시에 회전하게 하며 그리고 이때에 주차로크를 잠겨지지 않은 상태에서 유지하는 물림원판(2)을 물고 있게 된다. 
     물림원판(2)을 회전하게 하는 작동장치(7)상에 유압력의 새로운 적용에 의하며 상기 물림유니트(14)는 자동적으로 물어질 수 있다.
Patent KR-20010072838-A (KR)
Title: 전계 방출 디스플레이 장치의 조절을 위한 방법 및 장치
IPC: H01J29/04
Filed: 1999-07-08
Abstract: 본 발명은 새로 제작된 전계 방출 디스플레이에서 불순물 입자를 제거하는 방법에 관한 것이다.  불순물 입자는, a) 전계 방출 디스플레이(FED)의 양극(20)을 미리 정해진 전압으로 구동하고; b) 양극이 미리 정해진 전압에 도달한 뒤, FED의 방출 전류를 서서히 증가시키고; c) 방출된 전자들(40)에 의해 떨어져 나갔거나 달리 분리된 이온 및 입자들을 포획하기 위한 이온-트래핑 장치를 제공하는 단계들을 포함하는 조절 공정에 의해 제거된다.  양극을 미리 정해진 전압으로 구동하고 FED의 방출 전류를 서서히 증가시킴으로써, FED를 손상시킴 없이 불순물 입자가 효과적으로 제거된다.  본 발명은 또한 턴-온 및 턴-오프 동안에 게이트로부터 방출체로의 전류를 방지하는 FED의 작동 방법을 제공하는바, 이는 a) 양극 디스플레이 스크린(20)을 동작하고; 및 b) 양극 디스플레이 스크린이 동작된 뒤, 전자-방출체(40)를 동작하는 단계들을 포함하는 것으로 구성되어 있다.  방출체가 동작하기 전에, 양극 디스플레이 스크린이 미리 정해진 전압에 도달하기에 충분한 시간을 허여함으로써, 방출된 전자들(40)은 양극(20)으로 이끌리게 된다.
Patent KR-20010100987-A (KR)
IPC: C10N30/00
Filed: 1999-10-29
Abstract: 본 발명은 Y 또는 베타 제올라이트 상의 수소 처리 단계, 바람직하게는 수소화 분해 단계 및 상압 증류 단계를 포함하는, 고 품질의 베이스 오일을 생성하면서 동시에 임의로 고 품질의 중간 증류물을 생성하는 개선된 방법에 관한 것이다. 유출물 (진공 증류 처리되지 않은)을 바람직하게는 NU-10, EU-1, EU-13 제올라이트 또는 페리에라이트를 사용하여 접촉 탈왁스 처리한다. 그후, 이 방법은 바람직하게는 1 종 이상의 VIII족 귀금속, 염소 및 불소를 포함하는 촉매상에서, 방향족 화합물을 수소화 처리하는 수소화 피니싱 단계, 상압 증류 및 진공 증류 단계를 포함한다. 그리하여 얻은 오일 및 중간 증류물의 품질 (유동점, 점도 지수, 방향족 화합물 함량)이 개선되었으며, 의약용 오일(medicinal oil)를 생성할 수 있다.
Patent KR-20010087417-A (KR)
IPC: G06F15/177
Filed: 1999-07-16
Abstract: 사용자에게 아키텍처 차이의 부담을 주지 않고, 정보 처리 시스템을 제휴시키기 위한 장치, 및 이러한 장치를 이용하여 정보 처리 시스템이 제휴되는 통합 정보 처리 시스템이 제공된다.  정보 시스템을 포함하는 통합 정보 처리 시스템에서는, SFA 시스템(30)과 ERP 시스템(10)이 제휴되는 경우, 장치의 시스템 제휴 오브젝트(40)가 제휴원의 시스템에 대응하는 주도 롤(51) 및 제휴처의 시스템에 대응하는 수동 롤(52)을 생성한다.  정보 시스템 간의 통신 방법을 정의하는 제휴 정보에 따라서, 관련 오브젝트(53)가 롤들 사이에서 생성되고, 주도 롤(51)과 수동 롤(52) 사이에 트랜잭션이 전송된다.
Patent KR-20010089844-A (KR)
IPC: C12Q1/533
Filed: 1999-12-22
Abstract: 본 발명에 따라, 일련의 유전자들을 B군 스트렙토코커스에서 확인하였고, 그 생성물은 유기체의 외부 표면과 결합할 수 있다. 유전자들, 또는 그들의 작용단편들은, 예를 들면 미생물 감염에 대해 환자를 면역하는 백신과 같은 치료제의 제조에 유용할 것이다.
Patent KR-20010101533-A (KR)
Title: 데이터 캐싱 방법
IPC: G06F12/08
Filed: 2000-11-16
Abstract: 기억 매체에 저장되어 있는 데이터를, 계산기가 판독 요구할 때에, 판독이 요구된 데이터의 각각이, 판독 버퍼에 저장되어 있는 데이터와 캐시 적중되는지 여부를 판단하여, 판독이 요구된 데이터 중 캐시 적중되지 않은 데이터만을 상기 기억 매체로부터 판독하고, 상기 판독 버퍼로 버퍼링하여, 상기 판독이 요구된 데이터를 판독 버퍼로부터 계산기로 전송하여, 상기 기억 매체로부터 상기 판독이 요구된 데이터에 연속되는 번지의 데이터를 먼저 읽고, 상기 버퍼링된 판독 데이터와 연속이 되도록 판독 버퍼로 버퍼링한다.  이것에 의해, 캐시 데이터를 효율적이고 유효하게 활용할 수 있다.
Patent KR-20010102353-A (KR)
IPC: D01F6/70
Filed: 2000-02-14
Abstract: 본 발명은 엘라스탄 재활용 재료를 사용하여 건식 또는 습식 방사 방법에 따라 방사액으로부터 엘라스탄 섬유를 제조하는 방법 및 장치에 관한 것이다.  상기 재활용 재료는 임의로는 임의의 비율로 새로운 엘라스탄 재료의 용액을 혼합함으로써 보충될 수 있다.
Patent KR-20020006685-A (KR)
IPC: H01L21/304
Filed: 2000-03-08
Abstract: 본 발명은 웨이퍼 엣지를 처리하기 위한 방법 및 장치를 제공한다.   브러쉬/패드 어셈블리의 일단에서 웨이퍼에 인가된 압력은 브러쉬/패드 어셈블리의 대향단에서보다 크다.   증가된 압력은, 브러쉬/패드 어셈블리에 의해 인가된 작은 압력과 비교하여 웨이퍼의 저속회전 또는 역회전을 야기한다.   1실시예에 있어서, 저속회전은, 롤러의 패드가 웨이퍼의 엣지/사면을 처리하게 하는 롤러와 웨이퍼 엣지/사면간 정접속도의 차를 야기한다.   1실시예에 있어서, 대향방향의 회전은 웨이퍼를 회전하게 하는 것 외에 웨이퍼가 롤러에 반대로 회전하게 한다.   롤러의 세정 표면은, 회전이 저속이든 또는 역회전이든 웨이퍼의 엣지를 세정한다.
Patent KR-20030060157-A (KR)
Inventor: KANG BYEONG UK
IPC: A23L33/00
Filed: 2002-01-07
Abstract: PURPOSE: Provided is a diet composition effective for the loss of body weight and body fat. The diet composition relieves constipation, inhibits lipid absorption and has no adverse effects. CONSTITUTION: A diet composition effective for the loss of weight and body fat is characterized by comprising 0.01-1.0 wt.5 of a Cascara sagrada extract and 1.0-15.0 wt.5 of polydextrose, based on the total weight of the composition.
Patent KR-20030060270-A (KR)
Inventor: CHOI YONG WON
IPC: H01L31/09
Filed: 2002-01-08
Abstract: PURPOSE: A structure of an infrared detection bolometer and a fabricating method thereof are provided to increase the intensity of signals and reduce the number of fabrication processes by improving a structure of a support portion for connecting an absorbing layer to a driving substrate. CONSTITUTION: An infrared detection bolometer of cell units is formed on a driving substrate(10) having plural connective terminals connected to an internal circuit. The infrared detection bolometer includes a single sacrificial layer, an absorbing layer(30), and a support contact(20). The single sacrificial layer is formed on the driving substrate. The absorbing layer includes a plurality of conductive layers(32,36), a via contact(34), a heat absorbing layer(31), and an infrared absorption layer(37). The conductive layers are formed on an upper portion of the sacrificial layer. The via contact is used for connecting vertically the conductive layers to each other. The heat absorbing layer is inserted between the conductive layers and the via contact. The infrared absorption layer is formed on an upper portion of the final conductive layer. The support contact is used for connecting a connection terminal to a lower conductive layer of the heat absorbing layer.
Patent KR-20030060272-A (KR)
Inventor: JUNG DAE HYEOK
IPC: G05B19/18
Filed: 2002-01-08
Abstract: PURPOSE: A numerical control unit for high-speed operation and a controlling method thereof are provided to prevent lowering phenomenon of a processing speed by considering the information about various blocks. CONSTITUTION: A numerical control unit(100) includes an interpreter(110), a prediction controller(120), an accelerator and decelerator(130), an interpolator(140), a mapper(150), a fine interpolator(160), and a position controller(170). The interpreter is used for receiving a part program from a user and interpreting the part program. The prediction controller is used for calculating an end speed and a command speed of a block. The accelerator and decelerator is used for calculating a speed profile per an interpolation period by using the end speed and the command speed of the block. The interpolator is used for calculating a distance and a position of a tool per the interpolation period by using the speed profile. The mapper is used for calculating a distance of an axis per the interpolation period. The fine interpolator is used for dividing the distance of the axis per the interpolation period into a distance of the axis per a position control period. The position controller is used for calculating the transferring distance of the axis.
Patent KR-20030060652-A (KR)
Title: Manufacturing of Titanium Alloy Wire
Inventor: KIM YONG HWAN
IPC: B21C23/08
Filed: 2002-01-10
Abstract: PURPOSE: A manufacturing method of titanium alloy wire rod is provided to increase wire drawing process efficiency of the titanium alloy wire rod by improving lubrication effect between the surface of wire rod and processing dies extraordinarily and improving processing speed and processing efficiency of the wire rod at the same time. CONSTITUTION: The manufacturing method of titanium alloy wire rod comprises surface processing step of forming uniformed and fine irregularities(4) on the surface of a matrix metal(3) consisting of titanium alloy through surface processing process; oxidized film forming step of for forming uniformed oxidized film(5) on the surface of the wire rod by heat treating the matrix metal(3) on the surface of which irregularities(4) are formed in the temperature range of 600 to 850 deg.C for 2 seconds to 10 minutes; oxidized film stabilization step of closely adhering the oxidized film(5) to the surface of the matrix metal through wire drawing process for extruding the matrix metal; and wire rod processing step of forming a wire rod having desired size by repeatedly performing wire drawing and annealing heat treatment processes for forming the matrix metal(3) into a wire rod shape by extruding the oxidized film stabilized matrix metal to 5 to 90%.
Patent KR-20020061117-A (KR)
Title: Racing game machine
Inventor: HAYASHI RYOJI
IPC: A63F9/14
Filed: 2002-01-12
Abstract: PURPOSE: To permit a game player to enhance amusement in a game regardless of the arrangement of a satellite and also to have an illusion that the game player is watching a real sport in a competition game device which is provided with a race course arranged on a board surface, more than one model running body which runs on the race course and the satellite which is operated by the game player who predicts the arrival order of the model running bodies and fights to the finish. CONSTITUTION: A pseudo telescope 30 to be used by the game player who operates the satellite 20 is arranged and the pseudo telescope 30 incorporates a display 33 displaying a CG image and,then, the game player visually recognizes a situation in the competition course 11 through the CG image on the display 33.
Patent KR-20030061665-A (KR)
IPC: G06F1/00
Filed: 2002-01-15
Abstract: 본 발명은 일종의 자동 단전 제어방법으로, 특히 일종의 차량, 항공기기, 선박 등의 운송기구에 장착된 컴퓨터 자동 잠금 제어방법을 일컫는데, 스위치가 정상적인 조작순서에 의해 작동하지 않는 상황에서 장착된 컴퓨터 장치로 하여금 정상적인 작동순서에 따라 잠금 동작을 행하게 하여 컴퓨터 장치의 파손을 방지한다. 이 방법은 배터리 전원과 컴퓨터 장치 사이에 설치된 잠금 제어기를 검측과 제어용도로 삼아 이를 통해 지속적으로 배터리의 전원상태 및 컴퓨터의 전원상태를 점검하고 컴퓨터 장치가 닫음 동작을 행하지 않고 직접 스위치를 끌 때 제어기가 모의 잠금신호를 내보내어 컴퓨터로 하여금 정상적인 잠금 과정으로 진입케하고 컴퓨터가 정상적으로 꺼진 후 확인 신호를 잠금 제어기에 내보내어 잠금 제어기가 적당하게 컴퓨터의 주전원을 잠금으로써 일종의 컴퓨터 정상 꺼짐과 정상적인 단전을 확보하는 제어방법이다.
Patent KR-20020083416-A (KR)
Title: X-y address type solid-state image pickup device
Inventor: KOKUBUN MASATOSHI
IPC: H04N5/378
Filed: 2002-01-17
Abstract: PURPOSE: To provide an XY address type solid-state image pickup device manufactured by the CMOS process that has a wide aperture rate in spite of its small element size and can reduce the kTC noise (thermal noise). CONSTITUTION: In the solid-state image pickup device, a photodiode 10, a reset transistor(TR) 12, a source follower amplifier 14, and a horizontal selection TR 16 are formed in each pixel area Pmn. A kTC noise reduction circuit 6VR1 to reduce the kTC noise and a CDS(Correlated Double Sampling) circuit 6CL1 are formed at the outside of each pixel area Pmn. A 1st differential TR 62 of the kTC noise reduction circuit 6VR1 and the source follower amplifier 14 in each pixel area Pmn configure a differential amplifier.
Patent KR-20030065237-A (KR)
Title: Switching thin film transistor, image input device using it and method of manufacturing the same
Inventor: JANG GYU JEONG
IPC: H01L29/762
Filed: 2002-01-31
Abstract: PURPOSE: A switching TFT, an image input device using the same, and a fabricating method thereof are provided to reduce the parasitic capacitance of a data electrode line by reducing an overlapped region between a switch gate electrode and a switch source electrode. CONSTITUTION: An image input device includes a switch gate electrode(10a), a switch source electrode(14a), a switch drain electrode(14b), a sensor gate electrode(10b), the first, the second, and the third insulating layers, a switch semiconductor layer(12a), and a sensor semiconductor layer. The switch gate electrode is formed on a substrate. The switch source electrode is partially overlapped on the switch gate electrode. The switch source electrode is surrounded by the switch drain electrode. A window is formed at the sensor gate electrode to transmit the light. The first, the second, and the third insulating layers are formed on the entire surface of pixels including the window. The switch semiconductor layer is formed on the switch gate electrode. The sensor semiconductor layer is formed on the sensor gate electrode. An overlapped region between the switch gate electrode and the switch source electrode is smaller than the overlapped region between the switch gate electrode and the switch drain electrode.
Patent KR-20020065371-A (KR)
Inventor: LAUFENBERG ROBERT S
IPC: G06Q30/06
Filed: 2002-02-04
Abstract: PURPOSE: A system, a database, a computer readable medium, and a computer program for automatically ordering and selecting of a paralleling switchgear equipment are provided to enable a user to automatically create a paralleling switchgear system. CONSTITUTION: A method for automatically customizing and specifying a parallel switchgear system using a computer network-based system including a server coupled to a centralized database and at least one client system, the method comprising the steps of accessing a product configurator system, selecting switchgear product configurations from a plurality of user interfaces, and receiving at least one of a bill of material, a drawing and a price quotation for a parallel switchgear system.
Patent KR-20030066884-A (KR)
Title: The performance test stand for the cartridge filter of water purification
Inventor: SIM HONG SEOP
IPC: B01D35/14
Filed: 2002-02-05
Abstract: PURPOSE: An apparatus for evaluating performance of cartridge filter for water purification is provided to increase accuracy of filter selection of user through accurate performance test of the cartridge filter for water purification and increase stability of produced products by securing quality standard and checking filter product before using. CONSTITUTION: The apparatus for evaluating performance of cartridge filter for water purification comprises a circulation pipe line (S) consisting a closed circuit for reusing used fluid by testing performance of filter to be tested as sewage controlled to a specific concentration is being circulated; pure water storage tank(1) for storing pure water, pump for pumping circulation water, sewage tank(2) an internal pressure of which is controlled to supply the sewage having a specific concentration, raw water particle number measuring sensor(5) for measuring the number of particles of raw water, first manometer(8) for measuring pressure of raw water, evaluating filter housing(29) on which a filter to be tested is mounted, treated water particle number measuring sensor(6) for measuring concentration of treated water, second manometer(9) for measuring hydraulic pressure of treated water, circulation water flow meter(10) for measuring flow rate of circulation water and first and second cleaning filters(11,12) for filtering treated water sequentially arranged and connected on the circulation pipe line (S); first automatic valve(14) installed on the circulation pipe line (S) between the pure water storage tank(1) and sewage tank(2); second automatic valve(15) installed on the circulation pipe line (S) between the first manometer(8) and raw water particle number measuring sensor(5); third automatic valve(16) installed on the circulation pipe line (S) between the raw water particle number measuring sensor(5) and evaluating filter housing(29); fourth automatic valve(17) installed on the circulation pipe line (S) between the evaluating filter housing(29) and second manometer(9); fifth automatic valve(13) installed on the circulation pipe line (S) between the second cleaning filter(12) and pure water storage tank(1); sensor signal processor(7) for processing signals of the raw water particle number measuring sensor(5) and treated water particle number measuring sensor(6); and a computer(30) for controlling pumping pressure of the pump and input amount of sewage from the sewage tank(2) by receiving information of the sensor signal processor(7), information of the two manometers(8,9) and information of the flow meter(10).