baber/WOPTO huggingface dataset:
Patent KR-20010088119-A (KR)
Title: Apparatus and method for trimming the edge of strip
Inventor: KIM DONG SAM
IPC: B26D3/00
Filed: 2000-03-10
Abstract: PURPOSE: A strip cutter and a cutting method thereof are provided to improve the quality of the strip by preventing the occurrence of a burr in a step of cutting both edge parts of the strip and reduce installation expenses and manufacturing costs because additional equipment is unnecessary. CONSTITUTION: A device for cutting a strip includes a first cutting part(10) having a pair of upper and lower round knifes(11a,11b) for first cutting a cutting portion of a strip(S) in one direction and a second cutting part(30) arranged at a rear part of the first cutting part and having a pair of round knifes(31a,31b) finally cutting and dividing the strip by secondly cutting the first cut strip in the opposite direction of the first cut direction.
Patent KR-20010006784-A (KR)
Inventor: MINAMI KAZUHIKO
IPC: F16K3/34
Filed: 2000-03-11
Abstract: PURPOSE: To provide a check valve which hardly causes a hunting phenomenon after valve opening, thus reducing abnormal noises, vibrations and pressure losses in a compressor, a cooling circuit and a vehicle. CONSTITUTION: This check valve 33 is composed of a valve seat member 70, a housing 71, a valve element and a spring. In this case, a communicating port 71b of the case 71 has no linear portion extending from a seat face in the other direction, is symmetric with respect to the axial direction and is shaped into an isosceles triangle whose vertical angle faces the seat face. Accordingly, the opening area of the communicating port 71b is below proportional relation with respect to lift length of the valve element heading in the other direction from the seat face.
Patent KR-20000063014-A (KR)
Title: 연료 합성법
IPC: C07C2/86
Filed: 2000-03-24
Abstract: 탄소 공급원 및 산소 공급원으로서의 이산화탄소와 수소 공급원 및 제 2 탄소 공급원으로서의 메탄을 적어도 일부 함유하는, 하나 이상의 수소 공급원, 하나 이상의 산소 공급원 및 하나 이상의 탄소 공급원을 함유하는 통상적으로 기체인 조성물을, 통상적으로 액체인 연료로 전환하는, 하기 단계들로 이루어지는 방법: 제 1 전극 수단, 제 2 전극 수단, 및 제 1 및 제 2 전극 수단 사이에 위치한 통상적으로 고체인 하나 이상의 유전체 층을 포함하는 반응기에 상기 조성물을 공급하는 단계; 제올라이트, 알루미노포스페이트, 실리코알루미노포스페이트, 메탈로알루미노포스페이트 및 OH 기를 함유하는 금속 산화물의 군으로부터 선택되는 통상적으로 고체인 촉매의 존재하에 반응기 내에서 조성물을 유전체 배리어 방전시키는 단계; 및 유전체 배리어 방전을 조절하여 기체 조성물을 통상적으로 액체인 연료로 전환하는 단계.
Patent KR-20000036735-A (KR)
Inventor: RYOO JE SANG
IPC: G02B3/00
Filed: 2000-03-28
Abstract: PURPOSE: A method for manufacturing a concave lens for image reflection and a stainless reflection mirror using a stainless plate is provided to improve the productivity by exchanging a conventional glass concave lens with a stainless concave lens. CONSTITUTION: A stainless steel plate(1) is cut off by pressing. The surface of the stainless steel plate(1) is grinded, and a concave lens(6) is molded by a hydraulic press. The concave lens(6) is grinded again, and is coated in a vacuum state. According to the method for manufacturing the concave lens(6), the productivity is improved.
Patent KR-20010094230-A (KR)
Title: The foot bike to be capable of folding and unfolding
Inventor: LEE HEE SOO
IPC: B62K15/00
Filed: 2000-04-04
Abstract: PURPOSE: A folding type of kick board for children is provided to be carried simply and contained in a vehicle conveniently by folding a steering part and a steering handle installed in a front of a footboard. CONSTITUTION: A folding kick board is composed of a footboard(1) having a single rear wheel(11), an open elongated hole in the front, and fixing brackets including first and second assembling holes at both sides; a folding part(2) connecting a steering part(3) in front of the fixing brackets, and having first and second turning links, a moving bracket and an installation rod mounting a vertical rod(31); and the steering part mounted in the installation rod with including a front wheel(32) in the lower part and the vertical rod having a folding steering handle(33) in the upper part. A locking shaft is released with the repulsive force of a spring in turning a locking handle. The locking shaft is moved along an elongated hole of the second turning link in turning the vertical rod over the footboard, and the vertical rod is pulled with pulling the moving bracket back by rotating first and second turning links. The steering handle is folded with pushing a locking button protruded in a steering bracket(331) and turning a handle shaft(332) inward.
Patent KR-20010097441-A (KR)
Inventor: YOO JEUNG HUN
Filed: 2000-04-22
Abstract: 본 발명은 인터넷을 이용한 면세점 전자상거래시스템에 관한 것으로, 해외여행자인 고객이 면세점(70)에 직접 가지 않고도 웹서버(20)에 접속하여 자신이 탑승할 항공권번호와 여권번호를 입력하여 확인절차를 밟는 정도로서 국내외 해당 면세점(70)에 진열된 면세점 물품을 시간과 공간의 제약 없이 보다 편리하고 계획적으로 쇼핑할 수 있도록 하고자 하며, 해외여행자인 고객이 항공사서버(30)와 여권발급과서버(40)에 연결된 웹서버(20)의 해당 웹사이트에 접속해서 자신이 탑승할 항공권번호와 여권번호를 입력하여 확인절차를 거치는 고객확인단계(S1)와; 고객확인단계를 거친 고객이 국내외의 해당 면세점(70)을 선택하여 진열된 면세점 물품을 검색하는 면세점선택단계(S2)와; 구입하려는 면세점 물품을 선택하여 구입의사를 결정 전달하는 물품구입단계(S3)와; 구입물품에 대한 대금결제로서 신용카드나 현금결제를 선택하여 지불방법을 결정 통보하는 지불선택단계(S4)와; 대금지불이 완성되면 고객의 지급계좌에서 물품구입액이 자동 인출되어 해당 면세점(70)의 수취계좌로 자동이체되는 대금결제단계와(S5); 대금 지불된 해당 면세점(70)의 물품을 해당 공항의 물품취득소(60)에서 인도받는 물품인도단계(S6)를 포함하여 이루어지는 것을 특징으로 한다.
Patent KR-20010098188-A (KR)
Inventor: LEE HONG BEOM
IPC: B60C23/10
Filed: 2000-04-28
Abstract: 본 발명은 공기 브레이크나 공기 스프링과 같이 압축 공기를 구동원으로 사용하는 장치를 위해 압축기를 구비한 자동차에 있어서, 압축된 공기를 타이어에 주입하기 위한 장치에 관한 것이다. 압축기(11)에서 압축된 공기는 공기 탱크(12)에 저장된다. 공기 탱크의 일측에 연결된 공기 주입 호스(12)에는 밸브(14)와 압력계(15)가 설치되어 있고, 호스의 끝은 타이어의 공기 주입구(3)에 결합된다. 호스가 타이어의 공기 주입구에 결합되고 밸브가 개방되면 탱크 내부의 압축 공기는 호스를 통해 타이어로 주입된다. 압력계는 타이어로 주입되는 압축 공기의 압력을 표시한다.
Patent KR-20010104851-A (KR)
Inventor: CHOI YONG HOON
Filed: 2000-05-16
Abstract: 본 발명은 인터넷 통신망을 이용한 웹 서비스를 통해 소비자가 요청하는 상품을 동종의 웹카탈로그의 형태로 진열할 수 있도록 함과 더불어, 소비자가 지정하는 상품의 선택 사양에 따라 상품카탈로그의 진열을 가변하기 위한 인터넷을 이용한 상품카탈로그 검색시스템 및 그 방법을 제공한다. 
     이를 위해 본 발명은 인터넷 통신망을 통해 웹사이트에 접속하여 원하는 상품에 대해 다양한 검색사양을 입력하고, 그 검색사양에 따라 검색이 이루어진 다수의 상품이 개시된 웹카탈로그를 열람하기 위한 다수의 컴퓨터 단말장치와, 상기 다수의 컴퓨터 단말장치로부터 입력되는 다양한 검색사양에 따라 다수의 상품에 대해 부여된 상품분류코드를 검색하고, 그 검색사양과 일치하는 상품의 정보를 추출하여 웹카탈로그의 형태로 가공함에 의해 웹사이트를 통해 개시하는 웹호스트 서버 및, 다수의 상품에 대한 제품정보와, 각각의 상품에 대해 부여되는 상품분류코드가 격납되어 있는 정보 데이터베이스로 구성됨에 따라; 동종 또는 이종의 품목에 대한 제품사양별 비교 구매가 가능하게 되면서 제품의 구매력이 대폭적으로 향상될 수 있게 된다는 효과를 갖는다.
Patent KR-20010049395-A (KR)
Inventor: BOSETTI ALDO
IPC: C01B39/26
Filed: 2000-05-24
Abstract: PURPOSE: Provided is a diaminodiphenylmethane efficiently in high yield by carrying out the rearrangement reaction of an intermediate prepared by condensation reaction between aniline and formaldehyde in the presence of a zeolite catalyst. CONSTITUTION: The method for producing diaminodiphenylmethane of formula(1) (Φ is phenyl; R is H, a 1-8C (iso)alkyl, a 4-10C cycloalkyl, or the like, (n) is 1 or more and is an integer to make a functional valence 2-4) or its higher homologues, comprises a rearrangement reaction of an intermediate of formula(2):^¶- NR - CH - RN - ^¶, in the presence of an acid type zeolite having the spaciousness index of 2.5-19 of formula(3). The rearrangement reaction is carried out in a solvent such as an aliphatic hydrocarbon, or the like at 50-200 deg.C. The zeolite is a crystalline synthetic substance represented by formula(3) ((x)<1; (p) is 1-20; M is a metal in the groups of IA and IIA or a lanthanide metal; (n) is the valence of M). The diaminodiphenylmethane is prepared by reaction of aniline (derivative) with formaldehyde.
Patent KR-20010108596-A (KR)
Inventor: SHIN SUK KYUN
Filed: 2000-05-30
Abstract: 본 발명은 손잡이를 갖는 초대형 액체렌즈에 관한 것으로 공지의 초대형액체렌즈를 구성함에 있어서 렌즈의 둘레부로 렌즈를 파지하기가 용이한 손잡이를 양측으로 형성하여 사용시에 렌즈의 둘레부에 형성되어진 양쪽의 손잡이를 이용하여 사용함으로써 사용이 간편할 뿐만 아니라 액체주입구를 렌즈의 일측면에 돌출 형성시켜 마개로 밀봉이 가능하게 하여 렌즈의 제작이 간편하며 렌즈 속의 액체를 교환할 필요시에 매우 용이하게 교환할 수 있는 것이다.
Patent KR-20010111739-A (KR)
Inventor: CHAE SU JIN
IPC: G06F17/30
Filed: 2000-06-13
Abstract: 연구 자원 데이터 베이스를 제공하는 인터넷 사이트 관리 시스템 및 그 방법을 개시한다. 본 발명에 따른 연구 자원 데이터 베이스를 제공하는 인터넷 사이트 관리 시스템은 연구 자원에 대한 정보들이 데이터 베이스로 구축되어 있으며, 데이터 베이스로 구축된 연구 자원에 대한 각각의 정보들은 각 정보 제공자에 의해 그 내용이 수정될 수 있고, 새로운 정보가 추가될 수 있는 연구 자원 데이터 베이스부, 정보 이용자 또는 정보 제공자에 의해 검색 요청된 정보를 연구 자원 데이터 베이스부에서 검색하여 제공하는 검색 인터페이스부 및 정보 이용자 및 정보 제공자에 의해 정보 검색이 요청되면 검색 인터페이스부를 구동하고, 검색 인터페이스부로부터 제공되는 검색된 정보들을 정보 이용자 및 정보 제공자에게 전송하고, 정보 제공자로부터 새로운 정보 등록 및 등록된 정보 수정 요청에 대응하여 연구 자원 데이터 베이스의 내용 갱신을 제어하는 웹 서버를 구비하는 것을 특징으로 하고, 연구 자원 데이터 베이스의 관리가 보다 효율적으로 이루어지며, 정보 이용자들은 새로운 정보를 신속하게 얻을 수 있다.
Patent KR-20010111842-A (KR)
Inventor: LEE SANG ZEE
Filed: 2000-06-13
Abstract: 본 발명은 사용자 아이디로 분산된 위치정보 도메인 서버를 이용한 사용자의 위치정보 등록 및 검색방법과 그 시스템에 관한 것으로, 위치정보 도메인 관리자 단말기, 위치정보 도메인 관리 데이터 베이스를 갖는 위치정보 도메인 관리서버, 사용자의 위치정보(좌표)가 입력된 위치정보 도메인 데이터 베이스를 갖는 다수의 위치정보 도메인서버, 다수의 일반 도메인서버 및 다수의 사용자 단말기가 인터넷망을 통해 연결된 시스템이 구성되게 하여 사용자의 위치정보(좌표)를 위치 아이디(ID)와 함께 각각의 위치정보 도메인 데이터에 등록하고, 필요한 경우 사용자 단말기가 접속된 어느 도메인서버에서 검색하여 위치 아이디(ID)에 대응하는 사용자의 위치정보를 검색할 수 있도록 하는 사용자 아이디로 분산된 위치정보 도메인 서버를 이용한 사용자의 위치정보 등록 및 검색방법과 그 시스템에 관한 것이다.
Patent KR-20020000004-A (KR)
Title: Crankshaft Deflection Auto Display System
Inventor: PARK CHANG HO
IPC: F16C3/06
Filed: 2000-06-20
Abstract: PURPOSE: An automatic deflection measuring system of a crankshaft is provided to prevent an accident, and to improve productivity by measuring deflection of a crankshaft precisely without neighboring. CONSTITUTION: Deflection of crank throws is measured with a high precision digital deflection gauge(2) in processing a horizontal lathe of a large engine built-up 2-stroke crankshaft. The digital deflection gauge is installed in the crank throws. A micro central processing unit processes data after measuring deflection, and transmits data with a radio frequency transmitting module(1) by converting signals. A radio frequency receiving module(4) receives data from the radio frequency transmitting module, and transmits data to a personal computer(5). The personal computer shows the deflection value on a display unit(6) by operating program. The accident is prevented with measuring deflection precisely without approaching an operator to the crankshaft, and the productivity is improved by controlling deflection with the single operator.
Patent KR-20020000976-A (KR)
Title: Method for transformating color image on image processing system
Inventor: CHOI MIN SEOK
IPC: H04N9/67
Filed: 2000-06-23
Abstract: PURPOSE: A color image processing method in an image processing system is provided to convert three components of a color image into one complex number format, thereby reducing redundancy among the color components and remarkably decreasing the quantity of calculation required for processing color images. CONSTITUTION: Color components of luminance, hue and saturation are extracted from a color image(100). The saturation component among the color components is normalized to be set as a predetermined constant value(102). The color image is converted into one complex number form using the luminance and hue components to be able to be calculated(104).
Patent KR-20020000465-A (KR)
Title: Method of forming a wordline in a flash memory cell
Inventor: JUNG SEONG MUN
IPC: H01L21/28
Filed: 2000-06-26
Abstract: PURPOSE: A method for manufacturing a wordline of a flash memory device is provided to reduce the size of the device by minimizing the interval between floating gates, and to increase capacitance of a dielectric layer by improving a coupling ratio of the dielectric layer. CONSTITUTION: A field oxide layer(22) is formed in a predetermined region of a semiconductor substrate(21). A tunnel oxide layer(23) and the first polysilicon layer are formed on the field oxide layer. The first polysilicon layer(24) and the tunnel oxide layer are patterned. The second polysilicon layer(25) and the first tungsten silicide layer(26) are formed on the resultant structure. The first tungsten silicide layer is blank-etched and the second polysilicon layer formed on the field oxide layer is partially etched, so that a floating gate in which the first and second polysilicon layer are stacked is formed. A dielectric layer(27), the third polysilicon layer(28), the second tungsten silicide layer(29) and an anti-reflective layer are formed and patterned to form a control gate.
Patent KR-20000058709-A (KR)
Inventor: YOO UI DEOK
IPC: G01N27/90
Filed: 2000-06-26
Abstract: PURPOSE: A magnetic field generator of an Eddy current testing apparatus is provided to inspect all products by online measuring the shape and defects of objects by passing through a magnetic field generator installed in the automation system line. CONSTITUTION: A magnetic field generator of an Eddy current testing apparatus includes a magnetic field generating part(10) formed with a hollow part for passing though an object and wound by coil(1) for generating a magnetic field by the AC power supplied by the coil, and a fixing die(20) for fixing the magnetic field generating part for facing the hollow part of the magnetic field generating part toward the advancing direction of the object, wherein the Eddy current is generated in the object due to the magnetic field generated in the magnetic field generating part while passing the hollow part of the magnetic field generating part.
Patent KR-20020007715-A (KR)
Title: Method For Business To Business Electronic Commerce Including A Function Of Component Management
Inventor: PARK SUN HWON
Filed: 2000-07-18
Abstract: PURPOSE: A method for an electronic commercial transaction is provided to enable a user to optimize a business by establishing an order of the electronic commercial transaction smoothly and managing an operating state of a bought commodity continuously through constructing various databases based on a plurality of buyers, sellers, and elements. CONSTITUTION: An operator of a service providing system registers all element information at a currently used off-line, buying companies systems, and a selling companies systems(S202). If information with respect to each element is provided for an electronic commercial transaction(S204), the buying companies join to the system and receive various kinds of information(S206). In case that each user wishes to know a basic estimate before buying an element, the user connects to a web server through each terminal and inputs basic information for preparing an estimate(S208), or an estimate is progressed by using a terminal and a telephone(S207). A control unit prepares an estimate by responding to a user's intention and informs the estimate to the user. Thus, the user may receive information necessary for each element and an estimate requesting letter(S210) and may apply a contract conclusion(S212).
Patent KR-20020008976-A (KR)
Title: Motion estimator architecture for low bit rate image communication
Inventor: LEE YEONG SU
IPC: H04N7/32
Filed: 2000-07-21
Abstract: PURPOSE: A structure of a motion estimator for low-transmission-rate image communication is provided, which satisfies characteristic and transmission rate of an image while reducing hardware capacity, and optimizes the performance of the motion estimator by selectively applying a search method suitable for characteristic of low-transmission-rate image or performance of an encoder. CONSTITUTION: A previous frame storage(100) stores search window data of a current macro block in a previous frame memory. A current frame storage(200) stores current macro block data for finding a motion vector in a current frame memory. A multiplexer(300) multiplexes the previous search window data and current macro block data. Data processors(400) calculate mean absolute error values of motion vectors using the previous search window data and current macro block data transmitted from the multiplexer. A comparator(500) compares the mean absolute values of the motion vectors to detect a motion vector having the smallest mean absolute value. A status controller(600) controls the operation of each of the above-mentioned components.
Patent KR-20020009151-A (KR)
Title: A reflector antenna
Inventor: VADIM A KALOSIN
IPC: H01Q15/00
Filed: 2000-07-20
Abstract: PURPOSE: A reflector antenna for use in communication systems or satellite television is provided to ensure further improved characteristics by using pair reflector multi-beam scanning antenna, when an antenna having one reflector is used. CONSTITUTION: A reflector antenna includes at least one of a main reflector(10) being a portion of a rotation surface and movable irradiation plate, or fixed several irradiation plates. The reflector antenna includes at least one of sub-reflector(20) whose a type of its surface is determined in accordance with requirements of maximum surface availability of light beam having at least two of directions for example. The main reflector(10) is a portion of toro surface and the sub-reflector is determined by the following equation of f(z)=Pmn(X,Y), wherein the Pmn(X,Y) is a second order polynomial of nth power of X and mth power of Y. A coefficient of the second order polynomial and a directivity and position of the irradiation axis(32) are set to be an optimal parameter. The f(z)=x is set to be a cutoff equation of the sub-reflector(20) in planes of symmetry. The reflector antenna includes a lens which is disposed between the irradiation plate(32) and the sub-reflector(20).
Patent KR-20020009665-A (KR)
Title: Guide rod combination structure of disk brake
Inventor: YOON GYU WON
IPC: F16D65/02
Filed: 2000-07-26
Abstract: PURPOSE: Structure for connecting a guide rod in a disk brake is provided to prevent impact of a wall of a pinhole while sliding the guide rod by reducing a diameter of a lower portion of a guide rod and to minimize rattle noise. CONSTITUTION: Structure for connecting a guide rod of a disk brake comprises a guide rod(100) having a bar shape; a connecting groove(200) having a nut on an upper end; a connecting hole(400) formed on a connecting unit(300); a bolt(500) inserted to the connecting groove by penetrating the connecting hole; a carrier(20) corresponding to the connecting hole; a pin hole(600) slidingly combined to a lower portion of the guide rod by being mounted on both end portions of the carrier; an outer hole of the pin hole formed larger than the guide rod; a clearance formed between a lower portion of the guide rod and the pin hole; and a caliper housing slidingly combined to the carrier through the guide rod. Thereby, the structure for connecting the guide rod of the disk brake prevents impact of a wall of the pinhole while sliding the guide rod by reducing a diameter of the lower portion of the guide rod.
Patent KR-20000063795-A (KR)
Inventor: KIM TAE GYUN
IPC: D02G3/36
Filed: 2000-08-04
Abstract: PURPOSE: A process for preparing luminous composite fiber having sheath-core type cross section, long luminescent time, high brightness, wide wavelength range of light, excellent light resistance, weather resistance and abrasion resistance is provided which produces the fiber having excellent chemical stability and strength. CONSTITUTION: The title fiber is prepared by carrying out composite spinning of as a core component a mixture resin of a fiber forming synthetic resin and a luminous fluorescent material and as a sheath component a fiber forming synthetic resin in such a manner that the core component comprises 10 to 30% by weight of a luminous fluorescent material and 70 to 90% by weight of fiber forming synthetic resin chips, a cross-sectional area of a core amounts to 10 to 90% of total cross-sectional area and the fiber fineness of the composite fiber amounts to 2 to 50 denier.
Patent KR-20020012924-A (KR)
Title: Method control of compressor pole change motor of refrigerator
Inventor: JUNG SEUNG GYU
IPC: F25D11/00
Filed: 2000-08-09
Abstract: PURPOSE: A method for controlling operation of polar converting motor is provided to reduce power consumption and noise of the motor by repeatedly driving the motor in two poles and four poles. CONSTITUTION: A method comprises a first step(S100) of judging whether the temperature of refrigerator is higher than a preset temperature; a second step(S110,S120) of driving a polar converting motor in two poles if the temperature of refrigerator is higher, and judging again whether the temperature of refrigerator is higher than a preset temperature; a third step(S130) of judging whether the preset time period for driving the motor in two poles has lapsed, if it is judged in the second step that the temperature of refrigerator is still higher than the preset temperature; a fourth step(S140,S150) of driving the polar converting motor in four poles, if the preset time period has lapsed, and judging whether the temperature of refrigerator is higher than a preset temperature; a fifth step(S170) of judging whether the preset time period for driving the motor in four poles has lapsed, if the temperature of refrigerator is higher; and a sixth step(S160) of stopping operation of the polar converting motor, if it is judged in the fourth step that the temperature of refrigerator is lower than the preset temperature.
Patent KR-20000063910-A (KR)
Inventor: LEE EUN RYOUNG
Filed: 2000-08-10
Abstract: PURPOSE: A system for an electronic commerce of interior materials using the internet and a method for the same are provided to enable an interior work from a consult to a contract via the internet in real time, by adopting interior designers and interior carrying-out companies as members, and classifying the members by expert parts to supply a web office for supporting an online business, and supplying a free three-dimensional program to all members. CONSTITUTION: The internet(4) is connected to the computers(1-3) for communication between the members. The internet(4) is connected to a web server(5). The web server(5) controls a server(6) for the database that stores the information related to the interior, a server(7) for the database of the web office. The web server(5) further controls a database server(8) for managing an order and a deliver, a mail server(9), a server(10) for the database that stores the information of the interior materials and a product, and a server(11) for the database related to a community.
Patent KR-20020014016-A (KR)
Title: Method and System for On-line Education with Educational Material Making System
Inventor: CHO HYEONG NO
Filed: 2000-08-12
Abstract: PURPOSE: A method and system for evaluating on-line education equipped with a teaching material writing system is provided to increase the effectiveness of education by enabling a teaching material maker and a person who prepares examination questions to make a teaching material and an evaluation materials with a minimum of time and efforts and to distribute the materials to learners through the Internet, and by checking results of learning on line. CONSTITUTION: A teaching material management system(200) manages teaching materials or evaluation materials. An education management server(210) manages a database server(211) capable of storing the teaching or the evaluation materials and a web server(230) which is a user interface on the Internet. The database server(211) stores and classifies the teaching or the evaluation materials. In addition, the database server(211) stores and searches the teaching or the evaluation materials according to a request of the education management server(210). A file server(212) stores and manages texts, images and voices of integrated files. A TTS(Toll Transit Switch) server(213) converts text files among multimedia data inputted into voices and transmits the files to a teaching material making system(100). A VOD(Video On Demand) server(214) receives all sorts of multimedia data through the education management server(210). An OCR(Optical Character Recognition) engine(215) receives text image data files converted from the system(100) through the management server(210). A user interface component(220) transmits teaching or evaluation materials requested by learners to terminals of the learners. A web server(230) interfaces the management system(200) through the user interface component(220). A searching engine(240) searches teaching or evaluation materials managed by the database server(211).