baber/WOPTO huggingface dataset:
Patent KR-20000038407-A (KR)
Title: Game machine using micro-robot
Inventor: YU DONG KYUN
IPC: A63F9/00
Filed: 1998-12-07
Abstract: PURPOSE: A game machine using micro-robot is provided which makes people enjoy more realistic game by three-dimensionally transferring motion and sound of the micro-robot directly to the people. CONSTITUTION: A game machine comprises: (i) a game disk which is manufactured to correspond to optional scenarios; (ii) a micro-robot(200) which receives a control signal on the game disk and operates according to patterns of behavior corresponding to the received signal; (iii) a key input portion(105) which operates the key to operate the micro-robot(200); and (iv) a control means which transmits a signal to control the operation of the micro-robot and controls the whole game with perceiving the position of the micro-robot and conditions of progression, wherein the micro-robot(200) comprises a data input and output portion(202), a sensor portion(203), a driving portion(204), a central processing unit(201) and a power supply portion(205).
Patent KR-20000042689-A (KR)
Title: Method for detecting velocity disability calls through mobile phone base station groupings
Inventor: KIM IN JEONG
IPC: H04B17/00
Filed: 1998-12-26
Abstract: PURPOSE: A method for detecting velocity disability calls is provided to exactly retrieve the velocity disability calls, by using geographical information(latitude, longitude) of base stations to group base stations within a certain radius when a mobile phone fraud predicting system does not find individual service radius values of the base stations, and by detecting the velocity disability calls for calls only generated in different base stations, without retrieving the velocity disability calls for moving calls in the base stations. CONSTITUTION: A method for detecting velocity disability calls comprises the steps of: if radius information for base stations are not used, generating mobile phone base station groups, and generating location information patterns by codes and latitude/longitude values of each base station; applying an unsupervised learning algorithm to the location information patterns to group the base stations, and generating weights locations of the base stations groups; comparing the base station groups for two consecutive calls transmitted from a same number, and if the two calls are from different base station groups, detecting the velocity disability calls by using a shortest distance and a time interval, generated by using weights and radiuses of the base station groups.
Patent KR-20000045204-A (KR)
Title: Production process of low temperature cofired ceramic on metal base plate
Inventor: PARK SUNG DAE
IPC: C04B35/622
Filed: 1998-12-30
Abstract: PURPOSE: A production process of a low temperature cofired ceramic on metal(LTCC-M) base plate is provided which minimizes variations of enamel thickness so that metal preparation process is simplified. CONSTITUTION: A production process is as follows: (1) a first step wherein metals, various low temperature cofired ceramic green tapes and enamel tape are individually prepared; (2) a second which oxidizes the metallic surfaces to form metal oxides; (3) a third which coats adhesives on the surface of metal oxides to complete a metal base; (4) a fourth which piles up various low temperature cofired ceramic green tapes and enamel tape to form green piled body; (5) a fifth which compresses the green piled body to the metal base to form the compressed body; and (6) a sixth which cofires the compressed body to form LTCC-M base plate.
Patent KR-20000047112-A (KR)
Title: Apparatus for thermal printing of digital video printer
Inventor: NO SUK WON
IPC: B41J2/315
Filed: 1998-12-31
Abstract: PURPOSE: An apparatus for thermal printing of a digital video printer is provided to remarkably reduce output time by simultaneously printing an image corresponding to three primary colors on a paper in a single passing of the paper through three individual thermal printer heads. CONSTITUTION: An apparatus for thermal printing of a digital video printer includes a single receiving case formed with three through holes of a predetermined size on a top surface, three pairs of supply reels(60,60',60") and winding reels(70,70',70") disposed diagonally in the case, three thermal printing ribbons(80) respectively coated by one of R,G,B colors and wound on the reels, and independent thermal print heads(40) respectively mounted at positions corresponding to the respective through holes of the receiving case.
Patent KR-19990063865-A (KR)
Title: 물품 이동용 진공식 리프트장치
IPC: B66F9/18
Filed: 1996-10-09
Abstract: 하나 이상의 흡입판(2) 또는 흡입컵(28)이 진공원(22, 23, 23', 17)과 연결 및 분리되도록 설계되어 있고, 이동하고자 하는 물품(33; 34)과 장비(6-12)가 함께 움직이거나 물품(33; 34)에 대하여 장비(6-12)가 움직이도록 흡입판(2) 또는 흡입컵(28)이 장비(6-12)에 장착되어 있는, 물품(33; 34)을 이동하기 위한 진공식 리프트장치가 개시된다.  본 장치는 포크리프트 트럭(31)상에 장착되어 있는 포크부재(30, 30')가 그 내부로 삽입될 수 있는 팔레트형 구조물(21, 21', 22, 23, 23', 29, 29')을 갖추고 있으며, 구조물의 부품들은 진공챔버( 22, 23, 23')를 형성하고 있고, 진공원은 팔레트형 구조물상에 제공되어 있으며 진공챔버(22, 23, 23')에 공압적으로 연결되어 있는 전기구동 진공펌프(17)를 갖추고 있고, 그리고 기계적 또는 전기적으로 제어 가능한 정지 및 해제 밸브(5)가 진공챔버(22, 23, 23')와 흡입판(2) 또는 흡입컵(28) 사이에서 공기 연결부(4, 4', 3, 3')에 의해 연결되어 있다.
Patent KR-19990087134-A (KR)
Title: 선택 및 배치기 유선의 레이아웃 및 챠아지 맵을 최적화시키기위한 방법 및 장치
IPC: H05K13/02
Filed: 1997-10-30
Abstract: 본 발명에 따른 장치는 전자 구성 요소의 위치결정기 단독용, 또는 생산 라인중 하나로서 임의의 인쇄 회로판을 위한 양질의 레이아웃 및 챠아지맵 또는 셋업을 발생시킬 수 있는 컴퓨터제어된 알고리듬을 사용한다.  크로모썸의 최초 모집단을 채용하는 발생적 알고리듬으로 공지된 알고리듬 종류가 사용된다.  각각의 크로모썸은 어떻게 레이아웃 및 챠아지 맵이 발생되는가를 제어하는 매개변수의 세트를 나타낸다.  이전 코드에 기초한 문제 서술자가 발생된다.  적응 탐색기는 매개변수를 탐색하고 크로모썸과 같은 시험적 해법을 발생시키고, 발견적 레이아웃 발생기는 상기 문제 서술자를 사용하여 레이아웃 및 챠아지 맵을 발생시키기 위한 크로모썸을 해석한다.
Patent KR-19990087402-A (KR)
Title: 얀의 정방 또는 트위스트 공정에서의 실끊김의 감소
IPC: D02G1/08
Filed: 1997-02-28
Abstract: 본 발명은 트위스트된 얀(9)을 형성하기 위해 이동 섬유 집합체(7)를 트위스트하는 방법 및장치에 관한 것으로, 스트랜드는 닙 수단(14)으로부터 당겨지고 회전되어 얀을 트위스트시킨다.  닙의 하류에서 상기 트위스트된 얀을 이동 연속 벨트 수단(30)의 적어도 한 런(34 또는 35)과 맞물리도록 그리고 상기 런을 지나가도록 당겨서 벨트 수단의 표면(들)은 얀을 회전시키고 또 닙을 향해 가연(假撚, false twist)시킨다.  상기 표면(들)은 얀의 이동 방향으로 볼록하게 만곡되고, 얀은 상기 표면(들)을 지나 닙을 향하는 얀의 장력 전달을 실질적으로 감소시키기에 충분한 만곡된 선접촉부 전체에 걸쳐 상기 표면(들)과 맞물린다.
Patent KR-20000065265-A (KR)
Title: 말라리아 원충 msp-1의 c-말단 단편을 함유하는 재조합 단백질
IPC: A61K39/00
Filed: 1997-02-14
Abstract: 본 발명은 바큘로비루스계에 제조된 재조합 단백질에 관한 것으로서, 이 단백질의 필수 구성 폴리펩티드 서열은 인간에게 감염성인 말라리아원충(Plasmodium) 형 기생균, 구체적으로 열대열 말라리아원충(Plasmodium falciparum)의 말라리아유충체 형태에 존재하는 표면 단백질 1(MSP-1 단백질)의 42 킬로달톤 C-말단 단편 (p42)이고, 이 p42 단편은 특히 영역 II가 결실되어 있고, 경우에 따라서는 영역 III도 결실되어 있다. 이 재조합 단백질은 말라리아 백신 제조에 사용될 수 있다.
Patent KR-19990037793-A (KR)
Title: 폐기물을이용한발효사료제조방법
Filed: 1999-01-21
Abstract: 본 발명은 가축의 발육을 촉진하면서 경제적인 발효사료를 얻을 수 있게 하는 폐기물을 이용한 발효사료 제조방법에 관한 것이다. 본 발명은 메주가루와 황토 및 굴 껍질이나 조개껍질 등의 폐기물이나 대두박 및 비지 등의 곡물폐기물을 혼합하여 얻어진 분쇄물을 배합사료와 혼합하여서 제조되는 것을 특징으로 한다. 이에 따라 기존의 발효사료와 생균·효모제가 실제 사육 여건 하에서 소요되는 비용에 비해 효과가 미비한 점을 개선하고 단순한 제조공정과, 폐기물의 재활용 등을 통한 제조비용을 저렴하게 하면서 사료의 단가를 최소화할 수 있게 하여서 축산농가에 생산비는 줄이고 소득을 늘임으로 실제적인 도움을 줄뿐만이 아니라 폐기되거나 퇴비화하는 각종부산물과 폐기물을 사료화하여 수입사료곡물의 대외 의존도를 줄일 수 있도록 하는 효과를 제공한다.
Patent KR-19990072880-A (KR)
Title: 기록헤드의구동방법
IPC: B41J2/21
Filed: 1999-02-24
Abstract: 잉크 토출구(4 1 ∼4 9 )를 주주사(主走査) 방향으로 피치 2P로 배치함과 동시에 이 각 잉크 토출구를 잉크 토출구(4 1 , 4 4 , …), 잉크 토출구(4 2 , 4 5 , …) 및 잉크 토출구(4 3 , 4 6 , …)의 3개의 조로 분할하여 부주사(副走査) 방향으로 피치 D만큼 변위시켜 배치한 헤드(1)와, 잉크 토출구(5 1 ∼5 9 )를 주주사 방향으로 피치 2P의 간격으로 배치함과 동시에 이 각 잉크 토출구를 잉크 토출구(5 1 , 5 4 , …), 잉크 토출구(5 2 , 5 5 , …) 및 잉크 토출구(5 3 , 5 6 , …)의 3개의 조로 분할하여 부주사 방향으로 피치 D만큼 변위시켜 배치한 헤드(2)를, 서로의 잉크 토출구를 주주사 방향으로 피치 P만큼 변위시켜 기판(3)에 고정하고, 잉크 토출구(4 1 , …)와 잉크 토출구(5 1 , …)의 부주사 방향의 거리를 d로 했을 때, 거리 d와 3D의 정수배와의 차의 변위량이 D/2를 초과할 때에는 헤드(2)의 각 조의 잉크 토출 타이밍을 변경시켜 변위량이 D/2 이하가 되도록 보정한다.
Patent KR-20000060952-A (KR)
Inventor: SUNG GYEONG HAK
IPC: C07C5/54
Filed: 1999-03-22
Abstract: PURPOSE: A catalyst of preparing mixed xylene from benzene, toluene and at least C9 aromatic compound is provided, that highly increases the yield of the mixed xylene and greatly reduces the deactivation rate of catalyst compared with conventional catalysts. CONSTITUTION: The catalyst comprises mixed metals of at least one selected from platinum, tartar and lead supported on the carrier including 10 to 80 wt% of mordenite type zeolite which is controlled in a molar ratio of silica/alumina of 10 to 200; 5 to 70 wt% of ZSM-5 type zeolite which is controlled in a molar ratio of silica/alumina of 30 to 500; and 5 to 84 wt% of at least one inorganic binder selected from the group comprising γ-alumina, silica, silica alumina, bentonite, caolin, clinoptilolite and montmorillonite.
Patent KR-19990078384-A (KR)
IPC: B60G7/02
Filed: 1999-03-30
Abstract: A self-steering axle suspension system of the parallelogram type is provided with a tri-pivot cradle mechanism for changing the caster of the axle to provide for either a reverse or forward steerable axle mode while equalizing the forces on the pivots in the parallelogram to reduce pivot wear out. <IMAGE>   <IMAGE>
Patent KR-20000067691-A (KR)
Inventor: KIM GWAN HU
IPC: H04N19/177
Filed: 1999-04-30
Abstract: PURPOSE: A method for reordering frames of an image encoder is proposed to effectively reorder frames even when a structure of GOP(Group of picture) is changed in real time, thereby removing the discontinuity of a picture. CONSTITUTION: The method for reordering frames of an image encoder comprises the steps of: when a new picture is input, confirming whether or not the GOP structure of the new picture is changed; when it is confirmed that the GOP structure is changed, assigning a new N(number of picture in GOP)/M(period of I-picture or P-picture in GOP) and changing into a format adapted for the P-picture an M counter for counting a number of I-picture or P-picture, an N counter for counting a number of B-picture in the GOP and a hold counter for counting whether the GOP is changed; assigning a record memory depending on a type of the picture when a new picture is input and the structure of the GOP is not changed; after an upper record memory is assigned, assigning a read memory depending on a type of the picture and performing a reading function; and confirming whether or not the picture type is changed and reassigning a read memory depending on whether or not the picture type is changed.
Patent KR-19990088258-A (KR)
Title: 아크롤레인및아크릴산의제조방법
IPC: C07C57/055
Filed: 1999-05-13
Abstract: 프로필렌 분자상 산소 함유 가스에 의한 촉매 기상 산화에 의해 아크롤레인 및 아크릴산을 제조함에 있어서, 유기산, 고비점 화합물, 타르상 화합물 등의 생성, 탄화물의 석출, 제품품질의 악화 등의 원인이 되는 부반응을 효과적으로 억제하여, 프로필렌으로부터 아크롤레인 및 아크릴산을 고수율로, 동시에 장기에 걸쳐 안정되게 제조하는 방법을 제공한다. 프로필렌 원료에 포함되는 탄소수 2∼5의 불포화 탄화수소(프로필렌을 제외한다)의 함유량을 500ppm(중량) 이하로 한다. 특히, 탄소수 2∼5의 불포화 탄화수소(프로필렌을 제외한다)의 함유량이 200ppm(중량) 이하이고, 동시에 탄소수 2∼5의 디엔류 및 아세틸렌류의 합계 함량이 100ppm(중량)이하인 프로필렌 원료를 사용하는 것이 좋다.
Patent KR-20000074684-A (KR)
Inventor: JUNG JUNG KYU
IPC: F28D21/00
Filed: 1999-05-25
Abstract: PURPOSE: A heat exchange method and system using microwave is provided to rapidly raising temperature of water with low power consumption. CONSTITUTION: A heat exchange system comprises a heating tank(10) having an injection port for an injection of a heat exchanger fluid(90), a heat exchange pipe(20) installed for circulation of water within the heating tank, a circulating pump(30) for allowing the water to circulated through the heat exchange pipe, a temperature sensor unit(40) having a sensor(42) installed at an entrance of the heat exchange pipe, and a sensor(44) installed at an exit of the pipe, and which senses the temperature of water circulating by the circulating pump, a magnetron(50) having a microwave outlet hole(52) installed within the heating tank and which generates microwave so as to heat up the heat exchanger fluid injected into the tank, and a control unit(60) for controlling the magnetron and the circulating pump in accordance with the temperature sensed by the temperature sensor unit.
Patent KR-20000074785-A (KR)
Inventor: EE BONG SOO
IPC: G02B6/38
Filed: 1999-05-26
Abstract: PURPOSE: A waterproof optical connector and an adaptor are provided to prevent deterioration of optical fibers due to moisture even when the optical connector is placed outside, thereby improving a lifespan of the optical fibers. CONSTITUTION: In an optical connector connection structure including an optical connector(10) having a ferrule and a plug frame and an adaptor(20) having a sleeve, a waterproof optical connector and adaptor include waterproofing means placed at the combined portion of the ferrule and the plug frame and outside the sleeve of the adaptor. The waterproofing means are O-rings. The waterproofing means are formed of a shape memory gel. The O-rings have first and second O-rings placed at both ends of a ferrule supporting projection, and a third O-ring located outside the sleeve of the adaptor. The shape memory gel is coated on the inner side of the plug frame and the exterior of the sleeve.
Patent KR-20000075148-A (KR)
Inventor: PARK YUN CHANG
IPC: G01B11/24
Filed: 1999-05-29
Abstract: PURPOSE: An apparatus and a method for obtaining a moire pattern are provided to simplify the structure by removing a reference grating and accordingly omit the necessity to remove images of the reference grating except the moire pattern having shape information. CONSTITUTION: An apparatus for obtaining a moire pattern includes a light source(1) mounted with a first distance from a reference surface(S) to lay an object(7) on, a projecting grating(3) disposed between the reference surface and the light source, an imaging lens(9) mounted at a position with a predetermined distance from an optical axis(A1) of a projecting optical system formed by the light source and the projecting grating for passing though light beams reflected against the object, and a light receiving part(11) disposed at one side of the imaging lens for receiving the light beams passing through the imaging lens, wherein the optical axis of the projecting system formed by the light source and the projecting grating is parallel to an optical axis(A2) of an imaging optical system formed by the imaging lens and the light receiving part and perpendicular to the reference surface, and the distance from the reference surface to the light source is equal to the distance to the imaging lens.
Patent KR-20010010358-A (KR)
Inventor: PARK HAENG JEONG
IPC: C02F11/06
Filed: 1999-07-13
Abstract: PURPOSE: A removal equipment of sludge is provided to remove floated sludge by bubble being generated by aeration in wastewater treatment. The equipment is characterized in that an oxygen supplier (30) makes wastewater and air into jet flow for dissolution of much oxygen, and several wave-shaped bubble separators (11) separate wastewater and bubble produced by aeration. The bubble contains much suspended solid, so sludge is removed by separation of bubble. Separated bubble is flowed into a bubble removal equipment through a bubble-discharge pipe (4). And, separated wastewater is discharged out through a ceramic-ball layer (6) containing zeolite. CONSTITUTION: The shown equipment is characterized by comprising following parts: a jet nozzle (31), equipped with the oxygen supplier (30), to make jet flow; the ceramic ball layer (6) containing zeolite; several wave-shaped bubble separators (11) equipped with above the ceramic-ball layer (6); the bubble-discharge pipe (4) for discharge of bubble containing suspended sludge; a conveyor belt (21) for transferring separated bubble; and a plate (22) for bubble collection, equipped with the conveyor belt (21).
Patent KR-20010017303-A (KR)
Inventor: LEE JAE YUL
IPC: B06B1/00
Filed: 1999-08-10
Abstract: PURPOSE: A sound wave escapement device is provided to generate the optimum frequency appropriate for an application object and to improve an escapement effect by changing a wave sound frequency through simple manipulation. CONSTITUTION: A sound wave escaping device is made up of a driver(11) for generating a sound wave by vibrating an inner shaking plate and a horn(12) for amplifying the sound wave and transferring the sound wave to an output side. More than one hole is formed on an entrance side of the horn and connected to valves(14a-14c). To send dust or gas to the horn upon opening the valves, the valve is connected to the output side of the horn with a connecting pipe(15). A principle of regulating a sound in a wind instrument is applied to the sound wave escapement device. The frequency of the sound wave is varied by opening and closing the valves. Accordingly, even if the valves are opened, harmful gas enters a corresponding equipment through the connecting pipe.
Patent KR-20010017641-A (KR)
Inventor: LEE SANG GUK
IPC: H03K5/151
Filed: 1999-08-13
Abstract: PURPOSE: A balun circuit for low voltage is provided to separate the DC and AC of a bipolar transistor(Q1) using a coupling capacitor to make the collector voltage of bipolar transistors(Q1,Q2) to become lower than a base voltage and be operated in a bias voltage(Vbias) lower than 2Vbe. CONSTITUTION: The balun circuit for low voltage comprises bipolar transistors(Q1-Q4) and capacitors(C1,C2). The transistors(Q1,Q2) are turned on by a bias current(Ibias) and the transistors(Q3,Q4) are turned on by a bias voltage(Vbias), which supply collector-emitter voltage to operate the transistors(Q1,Q2) in a forward-active mode. The capacitor(C1) serves to alternatively connect the collector and base of the transistor(Q2). The capacitor(C2) serves to shield the DC voltage between a voltage(v1) and the collector of the transistor(Q1).
Patent KR-20010018711-A (KR)
Inventor: PARK DONG HO
IPC: G11C16/02
Filed: 1999-08-21
Abstract: PURPOSE: A NOR type flash memory and a program control method thereof are provided to prevent the program failure by resuming a program operation after recovering a bit line operation voltage to a normal level if the operation voltage drops below a specific level. CONSTITUTION: One sector(16Kbyte) has a plurality of memory cells(M11,M21,M31,...) at a cross point of 1024 word lines and 512 bit lines, and a control gate electrode of each cell is connected to a word line and a drain region is connected to a bit line. The plurality of word lines are connected to an output terminal of a word line charge pump(42). A row selector(40) selects one word line in response to a decoding signal provided from a row address circuit(44). A selected word line(WL0) is connected to the word line charge pump and the other word lines are blocked. The row address circuit includes a row address counter(44a) and a row decoder(44b). The row address counter generates a row address counter signal increasing by 1, and the row decoder generates a word line selection signal by decoding the row address count value. The plurality of bit lines are connected to an output terminal of a bit line charge pump(48). A column selector(46) selects one bit line in response to a decoding signal provided from a column address circuit(50). A selected bit line(BL0) is connected to the bit line charge pump and the other bit lines are blocked. The column address circuit includes a count control part(50a) and a column address counter(50b) and a column decoder(50c), and a level detection part(52) generates a detection signal according to the level of the bit line driving voltage. An address control part(54) disables the operation of the row and column address circuit, and enables the operation of the row and column address circuit in response to the detection signals.
Patent KR-20010019174-A (KR)
Inventor: LEE DONG HUI
IPC: C03B37/02
Filed: 1999-08-25
Abstract: PURPOSE: A cleaner of the coater in an optical fiber drawing equipment is provided which makes an optical fiber re-drawing process simple and prevents deviation of lining-up of drawing tower and leveling. CONSTITUTION: The cleaner comprises: (i) a coater(400) which coats optical fiber; (ii) a cleaning solution(402) which is connected to the coater and injected into the inside; (iii) an extraneous matter collecting case(404) which is connected to the coater; (iv) a vacuum pump(420) which sucks the coating solution or extraneous matters in the coater in the extraneous matter collecting case and provides hydraulic pressure to throw the cleaning solution in the coater; (v) a first point of contact relay(410) which is connected to the vacuum pump and turns on when a cleaning button turns on; and (vi) a second point of contact relay(412) which turns on to supply a power source to the vacuum pump when a single line of the optical fiber generates a signal.
Patent KR-20010019578-A (KR)
Inventor: PARK JE MIN
IPC: H01L21/31
Filed: 1999-08-28
Abstract: PURPOSE: A method for manufacturing a capacitor is provided to effectively form an opening which has a uniform width from an upper portion to a lower portion of the opening, by using a multilayered insulating layer instead of a single insulating layer when the opening for forming a storage electrode is formed. CONSTITUTION: The second insulating layer(210) is deposited on the first insulating layer(208) in which a contact plug(204) is formed. A multilayered insulating layer is deposited on the second insulating layer in an order of an etch rate of the insulating layers. The multilayered insulating layer is etched to form an opening(216) through a photolithography process.
Patent KR-20000023026-A (KR)
Inventor: ONO DETSUO
IPC: H01L21/306
Filed: 1999-09-09
Abstract: PURPOSE: A method for treating surface of a sample and apparatus are provided to improve anisotropic characteristic, to prevent decreasing of selectivity at etching of a fine pattern, and to diminish damage of a semiconductor device caused electron shading. CONSTITUTION: A surface treating method for forming a fine pattern on surface of a samples performed by an apparatus comprising a vacuum vessel(104), plasma generator, a sample table(108) for supporting the sample and high frequency wave power(109) for applying a high frequency wave voltage to the sample(107). The high frequency wave power(109) is turned-off before charging voltage of the pattern is arrived at breakdown voltage of a gate oxide connected to the pattern, the electric charge of the pattern is lowered sufficiently, then the high frequency wave power is turned-on and turned-off, repeatedly.
Patent KR-20010028751-A (KR)
Title: Validation apparatus and method for terminal monitoring unit
Inventor: KIM DU EON
IPC: B66B3/00
Filed: 1999-09-22
Abstract: PURPOSE: An authorizing device and a method for a terminal monitoring device are provided to improve security by contacting entire terminal monitoring devices with a name and a password of a user while being conveniently used and being efficiently managed. CONSTITUTION: A database(420) of a remote monitoring center(500) stores information on a name, a password, and a using history for accessing of a user while containing information on a new user, a history of a work area change, and a retirement. The remote monitoring center manages the information of users while each terminal monitoring device(310) manages the information on a user name and a password by downloading the information from the remote monitoring center. As the user changes work areas, the database of the remote monitoring center changes the information on the user by using an information management program for a contacting user. Thus, the user name and the password are automatically stored in the terminal monitoring device of the changed area while deleting the user name and the password in the terminal monitoring device of the previous area. Therefore, the user name and the password are continuously used without changing.