baber/WOPTO huggingface dataset:
Patent KR-20010006117-A (KR)
IPC: C07D491/048
Filed: 1998-04-08
Abstract: A process for the preparation of substantially single enantiomer (-)-narwedine comprises seeding a solution of racemic narwedine dissolved in a solvent with substantially single enantiomer (-)-narwedine, provided that if an added amine base is present the ratic solvent:added amine base is greater than 15:1.
Patent KR-20010006394-A (KR)
Title: 음성부호화
IPC: G10L19/08
Filed: 1998-03-13
Abstract: 샘플된 음성신호를 장기예측(LTP)을 사용하여 음성부호화하는 방법이다. LTP 피치-래그매개변수는 음성신호 내의 프레임을 위한 자기상관함수를 미리 정의된 최대지연 및 최소지연 사이에서 먼저 결정함으로써 이 음성신호의 각 프레임을 위해 결정된다. 다음에 자기상관함수는 가장 최근에 말로 표명된 프레임을 위해 결정된 피치-래그매개변수 근처의 지연들을 위해 함수를 강조하도록 가중된다. 그후에, 가중된 자기상관함수의 최대값이 발견되고 그 프레임을 위한 피치-래그매개변수로서 확인된다.
Patent KR-20010020444-A (KR)
Title: 유량 장치
IPC: G01F1/40
Filed: 1998-04-16
Abstract: 부품의 결합이 불필요하도록 도관의 한 부분에 제거가능하게 장착된 원 피스 변류 부재(42)를 포함하는 유량 장치. 상기 변류부재는 하나 이상의 다른 변류부재로 교체될 수 있도록 도관부에 제거가능하고 교체가능하게 장착되며, 이에 따라 광범위한 유체 이동을 수용한다. 상기 변류부재 주위의 유체의 난류를 제거하는 변류 부재의 하류 단에는 장착 또는 지지구(44)가 제공되어, 매우 안정한 신호를 제공한다. 이 신호는 도관의 벽에 있는 측정 탭(24,26)을 통해 얻어지며, 이에 따라 상기 탭들이 변류 부재내에 필요하지 않게 된다.
Patent KR-20010012189-A (KR)
Inventor: CYNSHI OSAMU
IPC: A61K31/343
Filed: 1998-04-23
Abstract: Preventives/remedies for arteriosclerosis containing as the active ingredient compounds represented by general formula (1), potential optically active isomers thereof, or pharmaceutically acceptable salts of the same. In said formula (1) R1represents hydrogen or acyl; R2 represents lower alkyl; R 3represents hydrogen or lower alkyl; and R4, R5and R6represent each hydrogen, alkyl, alkenyl, alkynyl or aryl, or R2and R4may form together with the oxygen atom a furan or dihydrofuran ring, and R5and R6 may form together cycloalkyl on which at least one methylene is optionally substituted by oxygen, sulfur or alkylated nitrogen to give a heterocycle.
Patent KR-20010012284-A (KR)
Title: 커넥터를 구비한 광 캡슐
IPC: G02B6/42
Filed: 1998-05-15
Abstract: 광 전기 캡슐(1)은 상기의 짧은 측면들 중 하나에 리세스(2)를 갖는다. 페룰(4)이 상기의 리세스에서 돌출해 있으며, 상기 페룰(4)은 캡슐내의 광소자(1')와 연결되어 있는 광섬유(4')를 포함한다. 상기 페룰(4)은, 커넥터(5")의 하우스(8)에 탄성력있게(10) 배열되어 있는 유사한 페룰(6)과 접촉을 이룰 수 있다.  상기 페룰들 상호간의 배열은 슬롯을 가진 탄성 튜브(5)를 이용하여 이루어진다. 상기 커넥터의 하우스는 앞쪽 면에 플랜지(9)를 갖는데, 상기 플랜지(9)는 상기 하우스(8)를 회전시키면 캡슐의 리세스(2)에 꽂힐 수 있는 것이다. 리세스 내에서 상기 플랜지를 90°회전시킨 후의 록킹 동작은, 상기 플랜지(9)를 지지하는 리세스(2)내의 내부 표면들이 볼록한 모양을 갖는 반면, 플랜지의 뒷면이 그에 상응하는 오목한 모양을 갖게 하는 방법을 이용하여 이루어진다. 커넥터(5")는 상기의 방법을 이용하여 쉽게 캡슐(1)에 연결되어 상기 캡슐로부터 분리될 수가 있다. 따라서, 캡슐은, 회로 기판상에 상기 캡슐을 다루어 설치할 때 문제점들을 야기시킬 수 있는 집적화된 피그테일을 사용하지 않는 단순한 광 연결로 얻어진다.
Patent KR-20010012295-A (KR)
IPC: C03C25/68
Filed: 1998-05-13
Abstract: 본 발명은 고급 텍스타일, 코톤-유사 및 용적 특성을 갖는 실리카 기본 Al 2 O 3 -함유 및 고온 저항성 글래스 실버에 관한 것이다.  본 발명은 또한 상기 글래스 실버로부터 글래스 스테이플 섬유제품 및 그의 용도에 관한 것이다.  텍스타일 특성 및 고온 저항성은 특히 선택적 산추출에 의해 얻어진다. 본 발명 글래스 실버의 조성은 특히 주성분으로 SiO 2 및 부성분으로 1-5%(중량) Al 2 O 3 를 포함한다.
Patent KR-20010012627-A (KR)
Title: 디보란을 이용한 저 비저항 텅스텐 박막층
IPC: C23C16/14
Filed: 1998-05-15
Abstract: 텅스텐 층을 기판상에 피복하기 위한 다단계 화학 증착방법에 관한 것으로서, 제 1 단계는 WF 6 및 SiH 4 가 피복챔버 내측으로 유입되는 핵형성단계(200)이다.  다음에, WF 6 및 SiH 4 유동은 정지되고 디보란이 5 내지 25초간 챔버내측으로 유입된다(단계 210).  최종적으로, 벌크피복 단계중에 텅스텐 층을 기판상에 피복하도록 H 2 및 B 2 H 6 와 함께 상기 WF 6 이 챔버 내측으로 재차 유입된다(단계 220).  바람직한 실시예에서, 상기 벌크피복 단계에도 질소가 공정가스 내측으로 유입된다.
Patent KR-20010068638-A (KR)
Title: Bicycle having a backrest to change the angle and a handle to adjust the height
Inventor: CHO YONG GON
IPC: B62K21/00
Filed: 2000-01-07
Abstract: PURPOSE: A backrest is provided to reduce physical inconvenience(lumbago) generated during a long travel using a bicycle and to secure a larger view during travel while decreasing fatigue of a user. CONSTITUTION: A body and a handle steering device(S1) are separated from a previous bicycle. Therein, a spring is put and a pipe of the steering wheel is changed to a ratchet gear to be inserted to a main pipe(P1) of a bicycle body. A handle upper and lower adjusting device(B1) is attached and when a traveler straightens up, a height of handle is adjusted to be suitable for arm's length. Up and down adjustment of handle is performed by fixing a groove of ratchet gear adopting a spring and a pin(S2). Therefore, fatigue applied on a waist and shoulders of a rider is reduced and a travel view is enlarged for lowering fatigue generated during a long time travel.
Patent KR-20010069121-A (KR)
Title: Device and method for selecting channel in digital television
Inventor: CHO TAEK IL
IPC: H04N7/015
Filed: 2000-01-12
Abstract: PURPOSE: A channel selection device of digital TV and a channel selection method thereof are provided to enable a user to select a wanting channel easily with looking at a TV screen by displaying a screen which consists of a logo indicating a receivable broadcasting channel. CONSTITUTION: A logo memory(103) records logo data indicating each channel of broadcasting station. A decoder memory(104) composes and records a logo screen which consists of a logo indicating each channel by using the logo data. A logo screen composition unit(105) composes the second screen to display on a display window of the logo screen. A CPU interface unit(106) performs an interface of a CPU(101) and the logo screen composition unit(105). An MPEG(Moving Picture Experts Group) video decoder unit(107) decodes digital video data. The first screen video reproduction unit(108) composes the first screen to display on the display window of the decoded video data. A mixer unit(109) mixes the first screen and the second screen to display. A display unit(110) displays the mixed screen.
Patent KR-20010073315-A (KR)
Inventor: SONG HWA SEAB
Filed: 2000-01-13
Abstract: PURPOSE: A construction process management program is provided to calculate correct material quantity and work time in each process so that it can prevent material waste in construction fields and weak construction. CONSTITUTION: The program comprises an input module, a storage module and an output module. The input module inputs the amount of materials, such as concrete, steel bars and molding flasks, according to a usage purpose and a construction structure. The amount of materials is calculated according to a construction planning, e.g. the amount of materials necessary for each layer. The storage module stores the input data at a storage device. The output module calculates the amount of materials for each process at a designated date.
Patent KR-20010073316-A (KR)
Title: Thrust Movable Radial Ball Bearing
Inventor: PARK JONG KO
IPC: F16C23/06
Filed: 2000-01-13
Abstract: PURPOSE: A radial ball bearing movable in axial direction is provided to easily induce thermal deformation of a shaft in direction that a user wants, to prevent lowering in accuracy of a machine due to thermal deformation of the shaft generated when the temperature has changed. CONSTITUTION: In a radial ball bearing used for a spindle or a ball screw of a machine, either an inner race(1) or an outer race(7) is constructed not to have a guide groove of a ball(4), so that the ball relatively moves to a shaft in axial direction in case of thermal deformation of the shaft.
Patent KR-20010073577-A (KR)
Title: A molding method of metalic goods
Inventor: LEE CHEOL U
IPC: B22D7/00
Filed: 2000-01-18
Abstract: PURPOSE: A metal product forming method is provided to obtain a precise and uniform product in a simple way and a cheap price with a second processing by press forming melted cast steel after hardening at a lower temperature. CONSTITUTION: A metal such as cast steel is melted in an electric furnace. Melted cast steel is cooled in a mold at a temperature of 700 to 800deg.C suitable for forming. A cooled metal product is removed from the molds, and transported to a press mold. The press mold compresses the metal product into a desired shape. The temperature of the metal product allows forming easy and precise. Pressing enables a hard structure without voids and a smooth surface to the metal product. The formed metal product is heat treated to prevent deformation thereof. Heat treatment is carried out by adjusting the cooling rate without carrying out an additional heating process. Painting is carried out at a temperature of 300 to 400deg.C.
Patent KR-20010076109-A (KR)
Title: sight and mentality-enhancing agent comprising perilla oil as an active ingredient
Inventor: KIM MAN SIK
IPC: A61P27/10
Filed: 2000-01-25
Abstract: PURPOSE: An agent for improving a nerve system function containing perilla oil as an effective ingredient is provided, which has an effect on lowering fatty acid in blood and blood pressure and inhibiting coagulation of a blood platelet and formation of a thrombus. CONSTITUTION: This agent for improving visual acuity and mental capacity contains perilla oil containing a large amount of α-LNA as the parent of ω-3 based fatty acid as an effective ingredient. Also, the agent has an effect on inhibiting an allergic reaction and shows an anticancer effect.
Patent KR-20000057875-A (KR)
Inventor: ARNT KALHAINZ
IPC: G08G1/16
Filed: 2000-02-02
Abstract: PURPOSE: This information transmitting method and device is provided, which controls traffic and promotes safety on road traffic by transmitting information to a vehicle with a simple and economic method or between vehicles. CONSTITUTION: This information transmitting method from a fixed or moving object (1) to a vehicle comprises the steps of; transmitting oscillating light signals (13) corresponding to information by a luminous semiconductor-demagnetization (2) installed on a fixed or moving object (1); receiving oscillating light signals (13) by an optical-electrical receiving set, which converts oscillating light signals (13) into electrical receiving signals (5) and is placed on a vehicle (3); valuating electrical receiving signals (5) by a valuation circuit (6) placed on a vehicle; controlling vehicle components, which influences vehicle's operation by displaying the information corresponding to electrical receiving signals on a vehicle or based on the information corresponding to receiving signals; transmitting the information and the receiving signals to a driver directly by a luminous semiconductor-demagnetization independently or combining with an additional luminous semiconductor-demagnetization.
Patent KR-20010077400-A (KR)
Title: Anticancer agents by combination of Ftase inhibitor(LB42908) and other anticancer drugs
Inventor: JUNG HYEON HO
IPC: A61K31/40
Filed: 2000-02-02
Abstract: PURPOSE: A farnesyl protein transferase(Ftase) inhibitor, LB42908 compound, and anticancer drugs produced by combination with other anticancer drugs are provided, thereby an anticancer drug having improved anticancer effects can be produced. CONSTITUTION: A novel anticancer drugs can be achieved by cotreatment or sequential treatment of the farnesyl protein transferase(Ftase) inhibitor, LB42908, and other anticancer drugs. Wherein other anticancer drugs can be alkylating agents containing cisplatinum, antimitotic agents containing paclitaxel and vinblastine, topoisomerase I inhibitors containing camptothecin, topoisomerase II inhibitors containing doxorubicin, RNA/DNA antimetabolites containing 5-fluorouracil, DNA antimetabolites containing 1-D-arabinofuranosylcytosine and cell cycle inhibitors containing flavopiridol.
Patent KR-20010077707-A (KR)
Title: Escape prevention body of a closed ring for cock valve
Inventor: CHOI MIN CHEOL
IPC: F16K5/00
Filed: 2000-02-08
Abstract: PURPOSE: A member for preventing a separation of a sealing ring is provided to smoothly rotate and to completely seal by continuously maintaining a loaded state of the sealing ring on a groove and by preventing the separation of the sealing ring. CONSTITUTION: Many grooves and a ring guiding screen(100) are integrally formed in an end(70) of a passage(12) in an outlet among a rotating space(11) and passages(12,12a). In locating a handle(31) in perpendicular to a piping line, a connecting passage(21) does not connect the passages(12,12a) each other. A sealing ring(24) is tightly contacted with an outer wall of an opening/closing valve(20). Water of the passages(12,12a) is not flowed to the passages(12,12a). In conforming the handle(31) to the piping line, the connecting passage(21) connects the pipe(12) with the pipe(12a) to flow the water. In rotating the opening/closing valve(20) at 45degrees, the connecting passage(21) is sealed and opened. The contacted state of the ring guiding screen(100) and the rotating space(11) is maintained by guiding.
Patent KR-20000030224-A (KR)
Inventor: CHOI EUN JA
IPC: A47J37/06
Filed: 2000-02-11
Abstract: PURPOSE: A baking plate is provided which is traditionally used for cooking a raw food in a household. Further, the plate is to improve convenience, economical interest and portability in use, and, especially, give specific advantages, such as an effect for reducing fat materials of meat for a long terms in the stone's use, as well as an effect for removing cholesterol and an unpleasant odor. CONSTITUTION: The baking plate is comprised of a baking stone(1), a frame(2) and a path (3), as shown in Fig 2. The baking stone(1) contains germanium, mineral or other infrared ores. The frame(2) is characterized to exhibit a slightly higher central region than those of a periphery. The stone(1) is accordingly inclined to both periphery to form the path(3). In addition, the stone(1) and the frame(2) are designed to be detachable to each other.
Patent KR-20000076714-A (KR)
Title: 전자빔 노광 시스템, 전자빔 노광 시스템용 마스크 및전자빔 노광방법
Filed: 2000-02-23
Abstract: 본 발명은 전자빔 노광 공정과 전자빔 노광 시스템을 제공하는 것으로서, 전자빔 노광 시스템은 산란 영역 및 마스크를 통과하는 산란된 전자량을 제한하는 리미팅어퍼쳐(limiting aperture)를 포함하는 마스크를 구비한 산란각 제한형 전자빔 노광 시스템으로서, 크로스오버(crossover)면의 주위에 고정되며 중앙 개구와 상기 중앙 개구를 에워싸는 폐쇄되어 연장된 개구를 구비하는 제1의 리미팅어퍼쳐와, 광축에 따른 위상이동이 가능하며 상기 중앙 개구 및 상기 중앙 개구를 에워싸는 폐쇄되어 연장된 개구를 구비하는 제2의 리미팅어퍼쳐를 포함하는 것을 특징으로 하고 있다. 또한 본 발명은 노광 시스템과 노광 공정에 적합한 스텐실형 마스크를 제공한다. 본 발명에 따르면, 특히 반도체 장치를 제조하는 공정의 패터닝 단계에서 산출량을 감소시키지 않으면서 선폭의 정확성이 우수하게 근접효과 보정이 조정될 수 있다. 본 발명에 따른 마스크는 정확한 마스크 패턴이 제공되어 분해능과 정확성이 양호한 패턴노광이 행해질 수 있는 정확한 마스크 패턴이 제공될 수 있다.
Patent KR-20010086944-A (KR)
Inventor: WON IN HO
IPC: A61N2/08
Filed: 2000-03-04
Abstract: PURPOSE: A magnetic field apparatus and a method for manufacturing the same are provided which brings over promotion of blood circulation and ionization inside the body, thereby managing healthy life by producing magnetic field electrically necessary in the human body, thereby obtaining deficient magnetic field in the partial or whole body therefrom. CONSTITUTION: The magnetic field apparatus (A) comprises an inner pipe having a size in which a laid man can be easily come in and out, wherein the inner pipe is made of a material through which magnetic field can be penetrated; a coil wire coiled all over the outer part of the inner pipe; an adhesive resin material coated on the coil wire covered on the inner pipe; and a magnetic field outer pipe (1) which is enveloped around the adhesive resin material so as to protect the adhesive resin material layer, wherein the magnetic field apparatus (A) further comprises magnetic field supporting pipes (11,11') which are fixed to a supporting body (4) at both ends of the outer pipe (1) so that the magnetic field apparatus is fixed; a switch (2) installed on one surface of the outer pipe of the magnetic field apparatus so as to control power; and a pulse switch (3) attached to the side surface of the outer pipe of the magnetic field apparatus.
Patent KR-20010087973-A (KR)
Title: A boiler with the form of heat pipe
Inventor: KIM BYEONG SAN
IPC: F24H9/18
Filed: 2000-03-09
Abstract: PURPOSE: A heat pipe type boiler is provided to increase the efficiency of heat transfer by preventing the prompt condensation of working liquid using latent heat maintaining liquid between a vacuum pipe and hot water. CONSTITUTION: A heat pipe type boiler includes a heating device(40), a hot water circulation pipe(50) and a heat pipe(60). The heat pipe has an inner pipe(62) of sealed type, working liquid(64) making heat, which is applied to a heating terminal of the inner pipe, into latent heat through the action of repetitive vaporization and condensation inside the inner pipe and transferring to a heat radiation terminal, a fluid transferring part for circulating working liquid inside the inner pipe through the capillary action, an outer pipe(68) surrounding the outside of the heat radiation terminal of the inner pipe, and latent heat maintaining liquid(70) filling the outer pipe and absorbing heat radiated to the outside of the inner pipe.
Patent KR-20010091562-A (KR)
Title: Network system for accessing to private internet protocol network using ip tunneling and control method thereof
Inventor: KOO CHAN GYU
IPC: H04L12/28
Filed: 2000-03-16
Abstract: PURPOSE: An IP(Internet Protocol) network access network system using IP tunneling and a method for controlling the same are provided to enable the host of an external IP network to communicate with a host in a private IP network through IP tunneling by offering an IP network access network system using IP tunneling. CONSTITUTION: The first host(311) has a web client program(411) to acquire the inner IP address information of a private IP network and an application program layer(413) to execute communication with the second host(351) connected with the private IP network. Also the first host(311) contains a TCP/UDP layer(415) to execute TCP/UDP communication with a home gateway(330), an external IP address(417) to access an IP network for IP communication, and a layer to indicate an inner IP address in the private network. A MAC(Multimedia Access Controller)(421), connected with a MAC(423) in the home gateway(330), controls actual multimedia data transmission. The home gateway(330) is provided with a web server program layer(429) corresponding to the web client program(411) of the first host(311) and a TCP/UDP layer(427) to execute TCP/UDP communication with the second host(351). Also the home gateway(330) contains an outer address layer(425) to execute IP communication with the hosts(311,351) and a layer(431) to appoint the inner IP address of the second host(351). The home gateway(330), comprising MAC layers(423) respectively interfacing with the MAC layers(421,433) of the hosts(311,351), controls multimedia packet transmission.
Patent KR-20000063029-A (KR)
Title: Polyamide-based thermoplastic compositions
IPC: C08L51/06
Filed: 2000-03-27
Abstract: The composition comprises (in wt.%): polyamide (A1) 50-99, catalyzed polyamide (A2) 1-50, plasticizer 0-40, and flexibility modifier 0-60 (preferably 0-30).
Patent KR-20010014669-A (KR)
Title: Hybrid integrated circuit device
Inventor: SHIMIZU HISASHI
IPC: F21V29/00
Filed: 2000-03-31
Abstract: PURPOSE: A circuit is provided to improve heat radiating property of a light emitting device where light emitting elements are fitted on a printed board, as well as light emitting efficiency, and realize making it light-weight compact in thickness and size. CONSTITUTION: A Cu pattern on which Ni is adhered is formed on a metallic board(11), and light emitting elements(10) are mounted thereon in a serial circuit, and then the serially connected metallic boards are connected in parallel. Since the Ni has superior corrosion resistance and high light reflection efficiency, the surface itself of a board can be utilized as a reflection plate. In addition, a lens is formed on the respective light emitting element and the light emitting efficiency can be improved. Furthermore, a first wiring(26) and a second wiring(27) are provided, so that a hybrid integrated circuit board(11) can be connected in parallel in a matrix form.
Patent KR-20010094048-A (KR)
Title: Heater for decorating hair and lot with the heater
Inventor: LEE MAN TAEK
IPC: A45D2/36
Filed: 2000-04-03
Abstract: PURPOSE: A heating element for hair beauty treatment and a lot having the heating element are provided which improves workability of beauty treatment by heating the lot using a chemically acted self-heating member, and extends heat retention time of the lot and improves efficiency of permanent waves by attaching or detaching the chemically acted self-heating member to or from the lot. CONSTITUTION: As an implement for hair beauty treatment in which permanent waves are formed by setting to hair a lot(10) having a hollow pipe shaped body, the heating element(20) for hair beauty treatment comprises a tube type inserting part(22) which is installed so that the inserting part can be freely inserted to or detached from the hollow part of the lot; a tube type handle part(24) which is connected to the inserting part and integrally extended to one side of the inserting part so that the handle part is projected to the outer side of the lot when inserting the inserting part into the lot; and a self-heating member(26) which is filled inside the tube type inserting part and the handle part so that the self-heating member is heated by causing chemical action when impact is applied to an impact plate(28) which is built inside the handle part side, wherein the self-heating member is heated by operating the impact plate inside the handle part after inserting the inserting part into the lot, thereby heating the lot.
Patent KR-20000071626-A (KR)
Title: 신호 패킷 수신기를 포함하는 전자장치
IPC: H03M7/38
Filed: 2000-04-10
Abstract: 이러한 GSM 이동 전자장치는: 
     음성 신호를 나타내는 압축된 정보의 패킷을 수신하기 위한 수신기(5), 
     상기 수신된 패킷의 품질을 검증하기 위한 검증 요소(52), 
     비율 정량화 제어(Cmode)를 포함하는 상기 패킷을 압축 해제하기 위한 압축 해제 요소(18), 
     압축 해제된 형태로 상기 정보를 복구하기 위한 요소, 
     상기 검증 요소에 의해 발생된 품질 정보 신호의 함수로서 상기 비율 제어를 변경하기 위한 제어 요소(55)를 포함한다. 
     이러한 방법에서 본 발명은, 전송 저하가 있을 때, 사용자에게 음성에 대한 정확한 복구를 제공할 수 있다. 본 발명은 음성 신호에 대한 G726 표준을 사용한 무선 전화 장치에 적용된다.
Patent KR-20010095581-A (KR)
Title: TV broadcasting method on Internet
Inventor: BYUN HYEON U
IPC: H04N7/14
Filed: 2000-04-11
Abstract: PURPOSE: An Internet TV broadcasting method is provided to perform an online operation by selecting a channel selecting menu displayed together with a moving picture while receiving a moving picture at real time. CONSTITUTION: An Internet user PC downloads a program for performing an Internet communication with a TV broadcasting. An install area of the program is automatically set to a directory of a disc of the Internet user PC. The program is performed to combine an Internet communication with a screen of the TV broadcasting. The combined screen and a selecting menu are divided to display them on a customer screen. A customer request channel is selected from a PC monitor screen and a channel menu. When the selecting menu is transmitted to an Internet TV broadcasting system, the system provides a corresponding screen and a menu of a next stage. A PC user repeats a necessary online operation according to an upgrade channel menu to obtain a desired result.
Patent KR-20010096723-A (KR)
Title: System and method of education on the internet
Inventor: PARK DAE UNG
Filed: 2000-04-14
Abstract: PURPOSE: A study system and method using the internet is provided to enhance study performance by reducing connection time, and to study and evaluate reading, listening, writing, and speaking. by reducing a time for connecting to a server. CONSTITUTION: A learner processes a log-in process by inputting one's ID and password(201). A previous study grade of the learner is provided(202). A previous process is repeated or new study is selected or requested(203). A reading or writing study is processed based on sentences(204, 205). A listening and specking studies may be processed(206, 207). Text data inputted from the learner are transmitted to a server through the internet, and the server performs an evaluation by comparing the data with answer data being stored in a database(208, 209, 210). After the comparing and evaluating processes, the result is provided to the learner, and a result of the total study processes may be provided to the learner(214¯216).