baber/WOPTO huggingface dataset:
Patent KR-20000072813-A (KR)
Inventor: LEE HYANG JE
IPC: F17C13/12
Filed: 2000-09-29
Abstract: PURPOSE: A residual gas discharger is provided to be easily used by a screw combining method and to prevent residual gas from leaking with a long combining portion. CONSTITUTION: For separating a residual gas remover(50) from a bottom(60), a user holds and rotates a handle(22) in the circumference direction of a female screw combining protrusion(14) and a combining portion is separated. The residual gas in a body(40) leaks through a hole(12). For the combination with the residual gas remover and the bottom, the handle is rotated in the opposite direction and the combining portion is moved along a spiral until placed at the hole.
Patent KR-20020028295-A (KR)
Title: An One Type Car-Door of Rear Door Glass Run and Rear Door Fixed Weather Strip
Inventor: CHO UI CHAN
IPC: B60J5/04
Filed: 2000-10-09
Abstract: PURPOSE: A vehicle door integrating a rear door glass run with a rear door fixed weather strip is provided to simplify the assembling work and resolve the weakening of the assembled portions. CONSTITUTION: A vehicle door is integrally molded with a rear door glass run(10), a rear door fixed weather strip(20), and a rear door division channel(30) so that a gap or a stepped difference is not generated in the assembling portions among the rear door glass run, the rear door fixed weather strip and the rear door division channel, thereby removing the wind noise.
Patent KR-20020030493-A (KR)
Inventor: JOA SEUNG HUI
IPC: H01L27/10
Filed: 2000-10-18
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to increase the surface area of a dielectric layer formed on a storage electrode, by forming at least two polycrystalline silicon layers having a cylinder type. CONSTITUTION: An active region is defined in a semiconductor substrate(51). A gate electrode is stacked between a gate oxide layer and a cap layer(59), having a sidewall(61) on its side surface. A transistor having an impurity region(60) is formed in the active region. The first and second plugs(63,65) in contact with the impurity region are formed. An insulation layer covering the first and second plugs is formed on the cap layer and the sidewall. A contact hole exposing the first plug is formed. The first polycrystalline layer in contact with the first plug through the contact hole is formed on the insulation layer. The first sacrificial layer is formed in a portion on the first polycrystalline silicon layer(75) corresponding to the first plug. The second polycrystalline silicon layer(81) of a sidewall type and the second sacrificial layer are sequentially formed on the side surface of the first sacrificial layer more than once. The third polycrystalline silicon layer(85) of a sidewall type is formed on the side surface of the second sacrificial layer. The first and second sacrificial layers are removed. A dielectric layer(87) is formed on the surface of the first, second and third polycrystalline silicon layers. The fourth polycrystalline silicon layer(89) is formed on the dielectric layer.
Patent KR-20020032694-A (KR)
Inventor: OH SANG WON
IPC: G11C8/08
Filed: 2000-10-26
Abstract: PURPOSE: A precharge circuit is provided to improve reliability by supplying a constant voltage to a word line regardless of a variation of supply voltage. CONSTITUTION: A plurality of NMOS transistor(N4,N5) is connected between a node(K1) and a ground. A gate of the NMOS transistor(N4) is connected with an input terminal(PRECH_EN). A gate of the NMOS transistor(N5) is connected with the input terminal(PRECH_EN) through a delay circuit(3). An input terminal of a latch circuit(6) is connected with the node(K1) and the gate of the NMOS transistor(N5). An output terminal of the latch circuit(6) is connected with a main load transistor(7). An output terminal and an input terminal of the main load transistor(7) are connected with the node(K1). An output terminal of a sub load transistor(8) is connected with an output terminal(PRECHARGE). An input terminal of a voltage division circuit(5) is connected with the output terminal(PRECHARGE). An output terminal of the voltage division circuit(5) is connected with one input terminal of a sense amplifier(4). A reference voltage is applied to the other input terminal of the sense amplifier(4). An output terminal of the sense amplifier(4) is connected with the node(K1). An input terminal of an initialization circuit(9) is connected with the node(K1) and the input terminal(PRECH_EN).
Patent KR-20010000933-A (KR)
Inventor: JUNG GU HYEONG
Filed: 2000-10-30
Abstract: PURPOSE: A system and a method for automatically selling product with a data communication function are provided to sell and buy the product by electronic money in real time, by adding the data communication function. CONSTITUTION: A vending machine system(100) includes a main vending machine(102) for processing the data transmitted and received, and managing other vending machines, and a plurality of subordinary vending machines(104a-104n) that communicate with the main vending machine(102) via a wired network and a local wireless network. The main vending machine(102) is connected to an online shopping mall server(20) and an electronic money authenticating server(30) via a data communication network(10). The server(20) sends product data and payment data to the vending machines(102,104a-104n). The server(30) authenticates the buyer of the product and the account of the buyer when a payment signal for the bought product is applied from the vending machines(102,104a-104n).
Patent KR-20010025214-A (KR)
Title: Internet web-basis's cgi package program foundation method
Inventor: KANG TAE SU
IPC: G06F9/445
Filed: 2000-10-31
Abstract: PURPOSE: A method for installing an internet web based CGI(Common Gateway Interface) package program is provided to install a CGI package program into a server restricting talent access path of a corresponding account server and to enable a general user to install the CGI package program. CONSTITUTION: A user accesses a FTP(File Transfer Protocol) server(S102) and uploads a CGI package provided by an account server to an account space provided by user's account space server(S104). The user executes a web browser in user's terminal(S106) and calls the CGI package(S108) to install the CGI package. The terminal displays an installation picture(S110), checks an installer of the account server for driving the CGI package and a system utility necessary to operation of the CGI package and extracts compression of the CGI package(S114). The terminal reads a path moving round the account server, changes a system absolute path(S116), copy the CGI package into corresponding folder(S118). The CGI package is being installed in the folder with being changed its permission(S120). After installation is completed, the user receive announcement reporting completion of the installation(S122) and URL(Uniform Resource Locator) to execute the CGI package on the user's web browser.
Patent KR-20020037788-A (KR)
Title: Management method for package working in application of patch program
Inventor: JUNG EUN YONG
IPC: G06F9/06
Filed: 2000-11-15
Abstract: PURPOSE: A method for managing the package operation when applying a patch program is provided to previously prevent an application error of the patch program caused by a mistake of an operator and the rebooting of a network element while applying the patch program and to prevent the fall of the system performance and the service caused by the application error of the patch program. CONSTITUTION: The method comprises steps of patching on the network element to apply the patch program through a set command(S201) and copying the patch program to a patch directory(S202), executing a program download command by using a man machine command(S203) and receiving a loading request from the network element(S204), confirming the patch application of the network element by searching a DBMS(DataBase Management System) storing a patch program policy if receiving the loading request(S205), and loading the program in accordance with a set procedure by searching the program copied to the patch directory in case of the network element(S206,S207).
Patent KR-20020042986-A (KR)
Title: Interlock device for circuit breaker of leading type
Inventor: YANG GI SU
IPC: H02B11/167
Filed: 2000-12-01
Abstract: PURPOSE: An interlock apparatus of a leading type air circuit breaker is provided to accurately control location displacement of the air circuit breaker by improving a lead bar assembly as a dual guide structure. CONSTITUTION: An interlock apparatus of a withdrawal type air circuit breaker comprises an operating screw(110), a base frame(101), a rear support bar(102), and a lead bar assembly. The operating screw(110) is rotated by a handle and is inserted into a screw hole of a cradle. The base frame(101) is formed as an opening rectangle and supports the operating screw(110). The rear support(102) is fixed in back of the base frame(101). The rear end of the operating screw(110) is passed through the rear support(102) to be supported. The lead bar assembly is supported at the outer side of the entrance of the screw hole for controlling the location of the air circuit breaker when the operating screw(110) is leaded in/out.
Patent KR-20020043869-A (KR)
Title: Apparatus for heating a room in a motor vehicle
Inventor: HUH GYEONG HUN
IPC: B60H1/00
Filed: 2000-12-04
Abstract: PURPOSE: A heating device for automobile is provided to supply sufficient hot water needed for heating during idling driving or low speed driving without a separate electric motor. CONSTITUTION: A heating device includes a water jacket; a heater core; a circulation pump; a second hot water pipe(5b); and a bypass pipe opening and closing valve(10). The water jacket is installed to enclose an engine. The heater core is for heat exchange between hot water flowing out of the water jacket and indoor air. The circulation pump is installed on a first hot water pipe(5a) connecting an outlet of the heater core and an inlet of the water jacket to circulate hot water between the water jacket and the heater core and is driven by the engine. The second hot water pipe guides hot water flowing out of the water jacket to the heater core and has a bypass pipe(7), directly connected to the circulation pump bypassing a water coolant pipe(6a), guiding part of hot water to a radiator, the radiator and the heater core, and a thermostat(8) selectively opening and closing the water coolant pipe and the bypass pipe according to temperature of hot water flowing out of the water jacket. The bypass pipe opening and closing valve is installed on one side of the bypass pipe to open and close the bypass pipe in response to pressure of hot water flowing out of the water jacket.
Patent KR-20020044739-A (KR)
Title: Novel chemical compound isolated from Ulmaceae and process for preparation thereof
Inventor: KIM JONG PYEONG
IPC: A61K36/185
Filed: 2000-12-06
Abstract: PURPOSE: A process of preparing an Ulmaceae compound by extracting Ulmus davidiana Planch as a kind of an elm tree is provided. Whereby, 10 kinds of new sesquiterpene quinone compounds having anticancer activity, antimicrobial activity, antiinflammatory activity and lipoperoxidation inhibitory activity are obtained. CONSTITUTION: Stalk, root, bark or leaves of Ulmus davidiana Planch is extracted, fractionated using n-hexane or chloroform and purified. The Ulmus davidiana Planch extract is used for the treatment of gastritis or stomach cancer. A health food composition contains any one of sesquiterpene quinone compounds as an effective component.
Patent KR-20020052230-A (KR)
Title: A device of monitoring to common information between server and client for transmitting
Inventor: SEO JIN SEOK
IPC: H04L12/24
Filed: 2000-12-26
Abstract: PURPOSE: An apparatus for sharing information of a server and a client for monitoring a transmission equipment is provided to simply compose the server and quickly share operation information by broadcasting updated operation information by an event drive type. CONSTITUTION: A database(20) classifies a plurality of operation information inputted in real time from a transmission equipment, stores classified operation information, and concentratively manages the stored operation information. A change monitoring unit(60) monitors that operation information stored in the database(20) is updated, detects updated operation information, and outputs detected operation information. A middle ware unit(70) broadcasts updated operation information inputted from the change monitoring unit(60) by a CORBA protocol, and simultaneously outputs operation information to a plurality of paths.
Patent KR-20020056458-A (KR)
Title: Method for manufacturing separating plate in compressor
Inventor: SA BEOM DONG
IPC: F04B39/00
Filed: 2000-12-29
Abstract: PURPOSE: A method for processing partition of compressor is provided to prevent leakage of gas by minimizing undercut of the partition rotating in an inner space of a cylinder assembly together with a vane to compress gas. CONSTITUTION: A processed body(F) includes a disk part(30') circularly formed on a plane and an axis part(20') vertically extended from a center of the disk part and is rotated centering on the axis part thereof. An annular rod type processing tool is moved in longitudinal direction of the axis part with an eccentric angle changed in horizontal direction with respect to a radius of the disk part on a position horizontal with the disk part and perpendicular with the axis part and processes the disk part to be a curved surface with sine wave shape.
Patent KR-20010016630-A (KR)
Title: longevity can
Inventor: KANG SUK SOON
IPC: A23L2/42
Filed: 2000-12-29
Abstract: PURPOSE: A health beverage is provided to improve conventional water/sugar based beverage by adding bean sprout, shell, medical herbs. CONSTITUTION: The beverage is characterized by comprising schisandra chinensis 2g, Chinese matrimony vine 3g, mulberry tree leaf 3g, parsley 2g, broccoli 5g, purslane 2g, lotus root 2g, unpolished rice enzyme 2g, grain powder 5g, fruit juice 50mL, 50 mL of boiled Atractylodes japonica Koidz (4g), iris 2g, dandelion/plantain powder 5g, 100mL of boiled bean sprout (100g), 50 mL of boiled shellfish (50g).
Patent KR-20010021554-A (KR)
Title: Process for the preparation of 1-aryl-3-cyclopropyl-1,3-propanediones
IPC: C07C323/22
Filed: 1998-07-03
Abstract: A process for preparing a compound of the formula:which comprises reacting a compound of the formula:wherein R1 is C1-6 straight- or branched-chain alkyl, with a compound of the formula:in an aprotic solvent in the presence of base.
Patent KR-20010021894-A (KR)
Title: 전압-제어 발진기
IPC: H03L7/099
Filed: 1998-06-30
Abstract: 본 발명은 클럭다중화를 위해 예를 들어 알려지지 않은 위상을 지닌 디지탈 데이터를 포함하는 데이터 스트림 입력으로부터 데이터 펄스를 회복하기 위해 위상동기 회로에 이용하는 전압 제어 발진기(VCO)에 관한 것이다. 본 발명에 따라, VCO는 다수의 VCO단을 포함한다. 각각의 단은 차동증폭기로 수행된다. 증폭기 부하는 다이오드로 연결된 두개의 교차 결합 게이트 장치(M5 및 M6)과 두개의 게이트 장치(M8 및 M9)로 형성되어 있다. 차동입력은 소오스 결합 입력쌍(M2 및 M3)과 두개의 풀다운 게이트 장치(M4 및 M7)에 가해진다.
Patent KR-20010023300-A (KR)
Title: 전기적으로 가열 용접가능한 플라스틱 튜브 피팅을제조하는 동안 인젝션 모울드 내에서 저항 와이어의단부를 지지하기 위한 방법 및 장치
IPC: F16L47/02
Filed: 1998-09-04
Abstract: 본 발명은 인젝션 모울드 내에서 전기적으로 가열 용접가능한 플라스틱 튜브 피팅을 제조하는데 있어서 저항 와이어의 단부를 지지하기 위한 방법 및 장치에 관한 것이다.  본 방법에 의하면, 전기적으로 가열되는 저항 와이어(4)가 코어(1)에 대해 권회되고, 저항 와이어(4)의 단부가 못(5)(6)에 연결되고, 핀(9)(10)이 코어(1)에 마련된 리세스(구멍)(7)(8)에 끼워지며, 못(5)(6)이 그들과 연결된 핀(9)(10)에 의해 코어(1) 위에 지지되고, 가이드 부싱(11)(12)이 각 핀(9)(10) 및 연결못(5)(6)과 연결되도록 배치되고, 각 가이드 부싱(11)(12)이 인젝션 모울드(2)에 마련된 리세스부(13)(14)에 지지되고, 스프링(15)(16)과 같은 탄성 액츄에이터는, 그 유지력이 가이드 부싱(11)(12)에 작용하여 가이드 부싱, 못, 핀을 코어(1) 측으로 가압하도록 배치되고, 원래 알려진 방식으로 모울딩 공간부(3) 내의 코어(1) 주위에 모울딩 화합물을 주입함으로써 인젝션 모울딩이 시작되고, 인젝션 모울딩 화합물이 각 핀(9)(10)에 도달함에 따라, 플라스틱 압력이 핀(9)(10), 못(5)(6)과 가이드 부싱(11)(12)을 스프링(15)(16)과 같은 탄성부재의 유지력에 대항하며 코어(1)로부터 들어올리고, 인젝션 모울딩 후, 코어(1)가 외벽(2)에서 취출되고, 가이드 부싱(11)(12)을 포함한 외벽(2)이 오픈되며, 완선된 피팅이 인젝션 모울드에서 나오게 된다.
Patent KR-20010023474-A (KR)
IPC: H01R13/70
Filed: 1998-03-19
Abstract: The invention concerns a protective circuit provided with additional switching function by exciting an electric adjusting component. The excitation signals to said adjusting component (1) are guided, between a first removable plug-type connector (2) and the adjusting component inside a housing, by means of an adapter plug (4; 17) with another removable plug-type connector, such that with the second removable plug-type connector, a protective switch (12) can be inserted in the excitation circuit of the adjusting component.
Patent KR-20010033050-A (KR)
Title: 슬램 래치
IPC: E05B65/00
Filed: 1998-12-04
Abstract: 슬램 래치(2)는 미끄럼 가능한 창 또는 도어 같은 패널(5)를 이에 상응하는 제2 패널 또는 프레임에 고정한다.  슬램 래치는 개방 및 패쇄위치사이의 이동을 위해 하우징에 연결되는 캐치(8)과 접착제에 의해 패널에 직접 장착될 수 있는 하우징(4)를 포함한다.
Patent KR-20010033892-A (KR)
Title: System and method for copy protection for digital signals
Inventor: CHANEY JACK
IPC: G06F21/86
Filed: 1999-01-08
Abstract: PURPOSE: A system for protecting copy of a digital signal is provided to be capable of preventing distributed information from being copied after a conditional access method is applied, regardless of a distribution point of information. CONSTITUTION: The first communication interface(204) communicates with a receiver(206) through a link(208), and an inverse scrambler(216) inversely scrambles a scrambled signal transferred from the receiver through the link. The second communication interface(214) communicates with the inverse scrambler through the link. A processor(210) removes a data signal from a digital signal and stores copy protection data issued by the data signal to a memory device. The processor(210) extracts the scrambled signal from the digital signal and supplies the scrambled signal to the inverse scrambler through the link. A reconverter reconverts a copy-protected signal issued from the inverse scrambler into an audio-visual signal using an inverse copy protection function.
Patent KR-20010034221-A (KR)
Title: Ｈｉｖ 프로테아제 억제제의 비술페이트염
IPC: A61P31/18
Filed: 1998-12-22
Abstract: 본 발명은 아자펩티드 HIV 프로테아제 억제제 화합물의 유리 염기에 비해 예상밖의 높은 용해도/용해율 및 경구 생체이용률을 갖는 것으로 밝혀진, 화학식 II의 결정형 비술페이트염을 제공한다. 
     ＜화학식 II＞
Patent KR-20010042004-A (KR)
Title: 애뉼러 크로마토그래프
IPC: G01N30/58
Filed: 1999-03-19
Abstract: 본 발명은 회전 테이블(3)에서 회전하는 입자 베드를 포함하는 애뉼러 크로마토그래프에 관련되는데, 상기 테이블은 연속 공급 라인을 가지는 고정식 공급 헤드(10)와 고정식 베이스에 대해, 용출액 배수 라인을 가진다.  상기 입자 베드는 내부 실린더(13)와 실린더 외장(6) 사이에 형성된다.  본 발명은, 중심 기둥(2)이 회전 테이블(3)에 구비되고 공급 헤드(10)를 통하여 위로 뻗어있다.  또, 공급 헤드(10)를 실린더 외장(6)에서 누르기 위한 잠금 장치(16,17)가 상기 기둥 위에 배치된다.
Patent KR-20010042423-A (KR)
Title: 비일치 주파수 호핑 셀룰러 시스템
IPC: H04B7/26
Filed: 1999-04-01
Abstract: 비일치 주파수 호핑 셀룰러 시스템은 이동 유닛 및 다수의 기지국을 포함한다. 이동 유닛은 이동 유닛의 위치에 의해 정해진 지리적 위치에 어느 기지국이 있는 지를 결정한다. 이 결정은 하나 이상의 조회 메시지를 송신하는 것 및 응답하는 기지국에 의해 송신된 응답 정보를 수신하는 것에 의해 이루어진다. 이동 유닛은 이동 유닛에 의해 이용하기 위해, 기지국의 세트로부터 하나의 기지국을 선택한다. 각 기지국은 적어도 하나의 조회 메시지를 수신하고, 적어도 하나의 수신된 조회 메시지에 대한 응답으로서 이동 유닛에 응답 정보를 송신한다. 이동 유닛은 응답 정보로부터 동기화 정보를 결정하고, 선택된 기지국과 통신을 설정하기 위해 동기화 정보를 이용한다.
Patent KR-20010042513-A (KR)
Title: 광학 활성을 갖는 산화안티몬 유리
IPC: C03B27/004
Filed: 1999-04-08
Abstract: 본 발명은 산화안티몬으로 필수적으로 이루어진 유리에 관한 것이다. 본 발명에 따른 광학 활성유리는 산화안티몬을 필수적으로 포함하며 희토류 원소의 산화물을 약 4몰%까지 함유한다. 희토류-도핑된, 산화안티몬-함유 유리는 0-99몰% SiO 2 , 0-99몰% GeO 2 , 0-75몰%(Al, Ga) 2 O 3 , 0.5-99몰% Sb 2 O 3 및 약 최대 4몰%의 희토류 원소의 산화물을 포함한다. 희토류 원소의 산화물은 Er 2 O 3 를 포함한다. 본 발명에 따른 유리는 금속 플루오라이드로서 표시되는 플루오르를 더욱 포함한다. 특히, 광증폭기와 같은 광학 에너지-생산 또는 광-증폭 장치는 전술한 유리를 포함한다. 광학 증폭기는 섬유증폭기 또는 평면증폭기 중 하나일 수 있으며, 이들이 하나는 혼성 조성물을 갖는다. 본 발명에 따른 유리의 구체예들은 통상적인 유리 제조 기술에 의해 형성될 수 있으며, 일부 고함량의 산화안티몬 구체예들은 스플랫 또는 롤러 담금질에 의해 형성된다.
Patent KR-20010025551-A (KR)
Title: solar heat collecting board
Inventor: KIM TAE U
IPC: F24J2/46
Filed: 2001-01-04
Abstract: PURPOSE: A solar heat collecting plate is provided to enhance heat efficiency and heat collecting efficiency, to reduce the number of processes and heat loss, to prevent water leakage and to replace a rubber sealing for removing humidity. CONSTITUTION: A solar heat collecting plate is made of a titanium coated copper plate to increase heat collecting efficiency. One copper plate is attached to many copper pipes to transmit all solar heat to a heat medium and to simplify a process. The copper plate is bonded to copper pipes by a supersonic welding instead of a soldering, then solar heat is smoothly transmitted to the heat medium of the copper pipes without the obstacle of lead elements. Furthermore, a heat collecting plate case is molded in one die and sealed with a rubber sealing and a frame instead of a silicone resin. Thus, the solar heat collecting plate is completely waterproofed. A mineral wool material is used as a heat insulating material instead of a glass wool material.
Patent KR-20020057526-A (KR)
Title: Method for interpolating image
Inventor: KIM SANG YEON
IPC: H04N7/01
Filed: 2001-01-05
Abstract: PURPOSE: A device of interpolating an image is provided to estimate an edge direction according to local characteristics of an image, and to interpolate the inputted image in the estimated edge direction, thereby minimizing an edge blurring. The device is provided to independently interpolate the image in horizontal and vertical directions, thereby efficiently using a memory and hardware. CONSTITUTION: A vertical direction interpolator searches a vertical edge direction by a pixel interface, and performs a vertical interpolation filtering in the searched edge direction. A horizontal direction interpolator searches a horizontal edge direction by the pixel interface, and performs a horizontal interpolation filtering in the searched edge direction. The vertical direction interpolator comprises as follows. A line memory(102) delays input signals by 1 line. A vertical pixel interface(103) interfaces the 1 line-delayed signals, and searches an edge direction having a minimum error. A vertical interpolation filter(101) interpolates the input signals in the edge direction having the minimum error.
Patent KR-20020061050-A (KR)
Title: Magnet Ning
Inventor: KIM SEONG GI
IPC: B60T8/00
Filed: 2001-01-12
Abstract: PURPOSE: A magnet ring is provided to conveniently apply a magnet ring to an ABS(Anti-lock Brake System) having an interior sensor and to improve sensing performance of a speed sensor. CONSTITUTION: A magnet ring comprises a magnet(12) mounted on an outer circumference of a magnet ring(10); an insert mold combined to an inner portion of the magnet ring; a bush combined to the magnet ring; a magnet arranged on an outer portion of the magnet with a specific interval; a bearing shaft(22) installed on a wheel shaft; a speed sensor(26) detecting rotational speed by being attached to the magnet; an outer wheel(24) mounted on an outer portion of the bearing; an insert ring(38); and an epoxy resin(34). The magnet of the magnet ring is rotated while rotating the bearing shaft. The speed sensor detects change of magnet field by arranged on the magnet. Thereby, the magnet ring conveniently applies the magnet ring to an ABS(Anti-lock Brake System) having the sensor of a vehicle.
Patent KR-20010078162-A (KR)
Title: Power unit
Inventor: ASAI KOICHI
IPC: H02M5/257
Filed: 2001-01-30
Abstract: PURPOSE: To provide a power supply unit capable of sufficiently following output voltage variations generated in response to input voltage variations caused by the rotational variations of an engine. CONSTITUTION: A difference between a reference sinewave outputted from a reference sinewave output circuit 13 and output voltage detected by an output voltage detecting circuit 5 is taken by a comparator 21 and outputted to an amplitude control circuit 12. A control signal for controlling the amplitude of a target wave to be outputted by a target wave outputting circuit 14 is generated by the amplitude control circuit 12 in response to the difference and a control function which is calculated and outputted, and the target wave is outputted from the target wave outputting circuit 14 in response to the control signal. The target wave is compared with the detected voltage from an output voltage detecting circuit 5 by a comparator 16, and if the voltage of the target wave is higher than the detected voltage, a positive gate control part 15a is selected so as to be operated.