baber/WOPTO huggingface dataset:
Patent KR-20000019290-A (KR)
Title: Ultra fine pitch lead package and a manufacturing method thereof
Inventor: HAN SEONG YEONG
IPC: H01L23/28
Filed: 1998-09-10
Abstract: PURPOSE: An UFPL(Ultra Fine Pitch Lead) package is provided which makes a lead frame composed of a plurality of lead frames, divides a lead by an enough punch width and an etching width and manufactures lead frames respectively. CONSTITUTION: An UFPL package comprises: a supporting plate; an adhesion membrane one the supporting plate; a semiconductor chip for storing information mounted on the adhesion membrane; a plurality of metal leads which is joined to a brink of the adhesion membrane by a predetermined pitch and supported by the supporting plate, the metal leads having a bending part in a portion protruded to the exterior of the supporting plate; bonding wire capable of an electrical connection by having the semiconductor chip and the metal leads wire-bonded; and a sealing material formed on the supporting plate to seal the semiconductor chip and the bonding wire.
Patent KR-20000019848-A (KR)
Title: Method for fabricating semiconductor device
Inventor: LEE JUNG YOUP
IPC: H01L21/8232
Filed: 1998-09-16
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to form a source and drain junction region only to the height of a silicon substrate when to fabricate a MOS transistor including an elevated source and drain. CONSTITUTION: A method is characterized by comprising the steps of: forming a gate insulation film and a gate conductive film pattern on a semiconductor substrate; forming an amorphous silicon film(26) on the whole structure by chemical vapor deposition method; performing a rapid thermal annealing in the temperature of 700 deg.C or 900 deg.C after implanting ion into the amorphous silicon film; and removing a remained amorphous silicon film(29) after performing the rapid thermal annealing.
Patent KR-20000020607-A (KR)
Title: In-line scanning electron microscope for manufacturing semiconductor device and method of measuring height of pattern using the same
Inventor: AN BYEONG SEOL
IPC: H01L21/027
Filed: 1998-09-22
Abstract: PURPOSE: A method of measuring a height of a pattern using an in-line scanning electron microscope for manufacturing a semiconductor device is provided to measure the height without any damage. CONSTITUTION: A method of measuring a height of a pattern using an in-line scanning electron microscope(SEM) comprises the steps of: inserting a wafer having an element pattern exposing a predetermined portion of the wafer and an arbitrary thickness into a process chamber of the in-line SEM to be stably placed on a wafer stage; a first focusing on the upper part of the element pattern; a second focusing on the exposed part of the wafer by elevating the wafer stage after maintaining the focus of the upper part; and determining the height of the element pattern by measuring the elevated distance of the wafer stage during the second focusing.
Patent KR-19990030193-A (KR)
Title: 멀티뱅크 메모리 소자를 위한 뱅크 인터로크 개념과 관련 테스트 모드 수행을 위한 장치 및 방법
IPC: G11C29/28
Filed: 1998-09-28
Abstract: 본원 발명은 다수의 메모리 뱅크를 가지는 멀티 뱅크 메모리 소자를 테스트하는 방법에 관한 것으로서, 
     상기 테스트에 관여하기 위해 상기 다수의 메모리 뱅크 중 2개 이상을 구동하는 단계; 
     각각의 구동된 뱅크내의 메모리 셀에 대응하는 적어도 하나의 공통 메모리 어드레스를 선택하는 단계; 
     상기 각각의 구동된 뱅크의 선택된 메모리 셀내에 테스트 데이터를 동시에 기록하는 단계; 
     상기 각각의 구동된 뱅크의 선택된 메모리 셀내에 미리 기록된 테스트 데이터를 동시에 판독하는 단계; 및 
     상기 각각의 구동된 뱅크로부터 판독된 테스트 데이터와 상기 각각의 다른 구동된 뱅크로부터 판독된 테스트 데이터를 비교하는 단계를 포함하며, 매칭이 존재한다고 결정되는 경우 통과 상태를 표시하고, 그렇지 않은 경우 결함 상태를 표시하는 것을 특징으로 한다.
Patent KR-19990036973-A (KR)
Title: 공기조화기
IPC: F24F11/04
Filed: 1998-10-09
Abstract: (과제) 좌우 플랩에 의하여 공조풍의 내뿜는 방향을 변경할 때에 적절한 풍량을 얻는다. 
     (해결수단) 풍량설정부는 설정 또는 선택된 풍량에 응한 회전수로 크로스  플로우팬을 회전하기 위한 팬모터(76)의 구동스텝을 설정한다.  좌우 플랩모터는 풍향설정부(166)에서 설정된 좌우 플랩의 각도(θ)에 의거하여 구동되고, 이로써 좌우 플랩이 스윙된다.  풍량보정부(168)는 설정된 좌우 플랩의 각도(θ)에 의거하여 구동스텝(X 0 )을 보정하고, 보정된 구동스텝(X)에 의거하여 팬모터를 구동한다.  이로써, 좌우 플랩의 스윙에 응하여 보정된 풍량의 공조풍이 분출구로부터 내뿜어진다.
Patent KR-20000032676-A (KR)
Title: Flush type sprinkler head
Inventor: KIM YEONG KWAN
IPC: A62C35/68
Filed: 1998-11-17
Abstract: PURPOSE: A sprinkler head is to comprise parts of precis ion processing to improve the assembling process for better productivity and reduce production cost and poor production rate. CONSTITUTION: The sprinkler head comprises: a main body(1) removably fitting in the water piping with a connection part(11) and having a cap(13); a cylindrical support bar(2) having a screw part(21) for coupling with the cap(13) and removably fitting into the body(1) as a unit; a disc form seat(3) provided at the bottom of the nozzle(12) on the main body(1) for sealing the nozzle with a packing(33); a movable ring(4) vertically movable on the outer side of the nozzle(12) and having several holes(41); a deflector(5) for diffusing water spouting from the nozzle(12): a cap form pressure adjuster(6) for adjusting pressure applied to the seat(3); a fusion blink(7) for opening and closing the nozzle with a low temperature melt fusion alloy(8); and a heat conductor(9) conducting heat of fire to the alloy for separation of the seat(3) and the adjuster(6) from the nozzle(12) for release of water.
Patent KR-20000033680-A (KR)
Title: Setup structure of vehicle radiator grill
Inventor: LEE WOO LIM
IPC: B60K11/00
Filed: 1998-11-25
Abstract: PURPOSE: A setup structure of vehicle radiator grill is provided to rapidly install a radiator grill without a combining tool, so that working process is shorter and manufacturing cost is reduced. CONSTITUTION: A setup structure of vehicle radiator grill comprises; projections (110) formed as one body in an upper radiator grill; fixing parts (120) in a lower radiator grill; an inserting hole (121) formed in each fixing part; a catching part (211) seizing the projections in an upper opening (210); a projection bar (212) inserted in the inserting hole in the lower opening; a bumper (200) forming a supporting part (213) to support both sides of radiator grill.
Patent KR-19990073044-A (KR)
Title: 플러그-인 타입의 티씨피/아이피 인터페이스 장치
Filed: 1998-12-12
Abstract: 본 발명은 TCP/IP 인터페이스 장치에 관한 것으로서, 특히 직렬통신포트를 통하여 TCP/IP 데이터를 유/무선으로 송/수신할 수 있는 장비와 TCP/IP가 지원되지 않는 장비를 연결할 수 있도록 구현하여 TCP/IP가 지원되지 않는 장비에서 TCP/IP 통신 기능을 추가하는 것이 매우 간편하다. 종래에는 TCP/IP 통신 기능을 추가하기 위하여 실시간 운영 체제나 TCP/IP 커널을 구현하는 것이 매우 어려운 것이었던 것에 비하여, 본 발명에서는 플러그-인 타입의 TCP/IP 인터페이스 장치를 제공하여 종래의 문제점을 해결하였다.
Patent KR-20000039907-A (KR)
Title: Method for managing lists of neighbor base in stations communication system
Inventor: MAENG HONG SEOB
IPC: H04W8/18
Filed: 1998-12-16
Abstract: PURPOSE: A method for managing lists of neighbor base stations in a communication system is provided to prevent an omission of a desired base station for a hand-off, by allowing a switching center to transfer an attached index to a mobile terminal according to a priority order for recording the lists of the base stations which are close to a current base station before the hand-off. CONSTITUTION: According to movement of a terminal, a registration of the lists of new neighbor base stations is requested to the switching center(200). An input parameter is analyzed for the registration thereof(201). An index table of the neighbor base stations is generated(202). It is determined whether an index equal to an inputted index exists in the index table(203). If the equal index does not exist therein, a new index table is written(204). If the equal index exists therein, a new neighbor base station is added to the index table which will be transmitted to the switching center(205). It is determined whether the writing of the index table for the neighbor base station is completed(206). If the writing thereof is not completed, the index table is written(207), and otherwise the data of the index table is copied(208).
Patent KR-20000041114-A (KR)
Title: Device for processing location request message of mobile communication exchange
Inventor: LEE JAE UK
IPC: H04W8/02
Filed: 1998-12-21
Abstract: PURPOSE: A device for processing location request messages of a mobile communication exchange is provided that the location request messages are divided and then processed in each visitor location register. CONSTITUTION: In a mobile communication exchange executing an exchange function among moving calls, a device for processing location request messages comprises a moving call processor(8), a visitor location register(10), and a home location register(14). The moving call processor(8) generates location request messages corresponding to an incoming call. The visitor location register(10) sets a specific path by being supplied the location request messages, and then transmits the messages through the specific path. The home location register(14) is processed the call by the moving call processor(8) using request responding messages of the incoming call, after supplying the request responding messages with the processor(8), through the visitor location register(10) corresponding to the location request messages.
Patent KR-20000041179-A (KR)
Title: Long time recording/reproducing method of magnetic recording media
Inventor: HONG SEONG HYUN
IPC: G11B5/02
Filed: 1998-12-18
Abstract: PURPOSE: A method for recording/reproducing a magnetic recording media for a long time is provided to prevent the omission of image signals when replacing the video tapes in a CCTV system, and to improve the image quality in a reproducing mode. CONSTITUTION: In a method for recording/reproducing a magnetic recording media for a long time, the media records an image signal rotating a head drum on which a pair of head is attached, and the method includes three steps. The first step is to slowly run the magnetic recording media with a constant speed less than speed corresponding to three times mode. The second step is to process an inputted image signal by a field unit. The third step is to divide the processed one image signal field and record on the magnetic recording media using the head.
Patent KR-20000042277-A (KR)
Title: Cam shaft cover structure of automobile
Inventor: CHANG SUN TAE
IPC: F02F1/24
Filed: 1998-12-24
Abstract: PURPOSE: A cam shaft cover structure of an automobile is provided to protect a valve from an abrasion and elongate an oil change cycle while supplying the valve with a large volume of oil from an auxiliary oil tank arranged in the cam shaft cover upon the initial startup of the automobile. CONSTITUTION: A cam shaft cover structure having an auxiliary oil tank(32) with an auxiliary oil injection port(46) inside of a second chamber(14) of a cam shaft cover(30), the auxiliary oil tank(32) comprising an outlet(40) protruded from an end of the tank(32), an open-and-shut valve(42) hinged at a side of the outlet(40) via a spring(44) and which has at an end thereof a sealing member, an oil pipe(36) arranged at a side of the tank(32) to be communicated with an oil passageway of a cylinder head, and a check valve(38) arranged at the oil pipe(36) so as to prevent a backflow of the oil.
Patent KR-20000042460-A (KR)
Title: Method for forming bit line contact of semiconductor device
Inventor: JANG JIN MAN
IPC: H01L21/28
Filed: 1998-12-24
Abstract: PURPOSE: A method of forming a bit line contact of a semiconductor device is provided to reduce a production cost. CONSTITUTION: After a word line(11) is formed by using a hard mask(12), a spacer nitride layer(13) is formed on sidewalls of both the word line(11) and the hard mask(12). An insulating layer(14) is then formed over all surfaces and selectively etched to form contact holes in a cell region. Next, polysilicon plugs(15) are formed in the respective contact holes. An oxide layer(16) and a nitride layer(17) are then successively formed on an overall top surface, however those on a periphery region are removed. Next, another oxide layer is formed all over and then selectively etched to define bit line contact regions. Subsequently, bit line contacts in the cell region and the periphery region are simultaneously formed by a selective etching process. Accordingly, it is not necessary to use two critical masks.
Patent KR-19990044122-A (KR)
IPC: A61F13/15
Filed: 1996-08-06
Abstract: A forming station used to make a substrate. The forming station has a forming chamber which deposits particles and fibers from an air carrier onto a forming screen movable relative to the forming chamber. Inside the forming chamber is at least one baffle, which creates a velocity gradient and low pressure zone for the air carrier. Different sized components of the substrate have different momentums, and thus are differently affected by the velocity gradient and low pressure zone. This difference causes the different sized components to be sorted according to size. The sorted components are then distributed according to size within the substrate.
Patent KR-19990067621-A (KR)
Title: 광경화되고 가교결합된 하이알루론산 겔 및 이의 제조 방법
IPC: A61L15/50
Filed: 1996-11-14
Abstract: 본 발명은, 10Hz의 주파수하의 동점탄성에 있어 저장 계수(G')가 50 내지 1500Pa이고 손실 계수(G")가 10 내지 300Pa이며 탄젠트 델타(G"/G')가 0.1 내지 0.8이고, 광반응성 가교결합 그룹이 하이알루론산의 작용성 그룹에 화학적으로 연결되어 있는 광반응성 하이알루론산 유도체를 자외선으로 조사하여 서로 광반응성인 가교결합 그룹을 가교결합시킴으로써 수득된 하이드로겔인, 광경화되고 가교결합된 하이알루론산 겔, 이의 제조방법 및 생의학적 재료로서의 이의 용도에 관한 것이다.
Patent KR-19990087381-A (KR)
Title: 일회용 흡수용품용 액체 불투과성 배면 시트
IPC: A61F13/49
Filed: 1997-02-04
Abstract: 일회용 흡수용품은 액체 불투과성 배면 시트, 액체 투과성 상부 시트 및 그의 사이의 흡수성 구조체를 갖는다.  배면 시트는 흡수성 구조체의 양쪽의 액체 장벽 대역을 한정하며, 한쌍의 액체 불투과성 봉쇄 플랩은 액체 장벽 대역 위에 놓인다.  다리 탄성 부재는 배면 시트의 측면 연부를 따라 배치되고, 플랩 탄성 부재는 액체 불투과성 봉쇄 플랩내에 배치된다.  액체 장벽은 각각의 액체 장벽 대역 내에 있고, 액체 불투과성 배면 시트의 전면 연부 및 후면 연부 사이에 걸쳐있다.  각각의 액체 장벽은 각각의 다리 탄성 부재와 플랩 탄성 부재 사이에 있는 것이 바람직하다.
Patent KR-20000016045-A (KR)
Title: Radio wave absorbing panel
Inventor: TSUNO TOSHIO
IPC: H05K9/00
Filed: 1998-03-30
Abstract: PURPOSE: A radio absorbent panel is provided whose radio absorbency is excellent and which is suitable for an opening part in a building whose panel thickness is thin. CONSTITUTION: A radio wave absorbing panel(1) is made up of a first insulating substrate(2) and a second insulating substrate(2) disposed in parallel a predetermined distance apart and a middle insulating substrate(4) disposed between and parallel with the first and second substrates. The first and second substrates each have a conducting film coated over the entire surface of one side. On one side of the middle insulating substrate are coated multiple conducting films disposed in the form of stripes or a matrix. By this means a thin radio wave absorbing panel having excellent radio wave absorption and transparency to light can be obtained.
Patent KR-20000016726-A (KR)
Title: Enantiomer separation from chromane acid esters
Inventor: DEVANT RALF M
IPC: C07D311/66
Filed: 1997-05-07
Abstract: PURPOSE: A method for chromatographic separating 2-alanoyl-chromane derivative ester is provided to chromatograph by using an eluate containing C1-5 alcohol on an absorbent containing aromatic carbamate-substituted polysaccharides. CONSTITUTION: The invention relates to processes for the chromatographic separation of enantiomeric esters from 2-alkanoyl-chromane derivatives of the formula (I) in which Z is -(CH2)n1-(CHA)n2-(CH2)n3, where n1 = 0, 1, 2 or 3, n2 = 0 or 1, n3 = 0, 1, 2 or 3, with the proviso that n1 + n2 + n3 being less than 4, R6, R7, R8 and R9 are mutually independently H, A, OA, phenoxy, OH, F, Cl, Br, I, CN, CF3, NO2, NH2, NHA, NA2, Ac, Ph, cycloalkyl with 3 to 7 atoms, -CH2NH2, -CH2NHA, -CH2NA2, -CH2NHAc or -CH2NHSO2CH3, where two neighboring radicals may also be an alkylene chain with 3 or 4 C atoms, A is alkyl with 1 to 6 C atoms, Ac is alkanoyl with 1 to 10 C atoms or aroyl with 7 to 11 C atoms, pH is unsubstituted or R5, 2, 3 or 4-pyridyl or phenoxy-substituted phenyl, R5 is unsubstituted or 1-5 F, CF3 or wholly or partially fluorine-substituted A, A and/or OA-substituted phenyl, by means of chromatography on absorbents containing aromatic carbamate-substituted polysaccharides, e.g. cellulose, especially cellulose-tris(3,5 dimethyl phenyl carbamate), using eluate containing C1 to C5 alcohols. Suitable eluate are C1 to C5 alcohols, especially methanol and ethanol or their mixtures. Preferred eluate are C1 to C5 alcohols and C1 to C10 hydrocarbons, especially mixtures of hexane or heptane with 2-cropanol.
Patent KR-20000022038-A (KR)
Title: Connectorized antenna for wireless lan pcmcia card radios
Inventor: CASAREZ THERESA LONEY
IPC: H04B1/38
Filed: 1997-06-16
Abstract: PURPOSE: A connector antenna for wireless lan pcmcia card radio is provided for removable connector flexible, planar antenna (1) and a removable tethered antenna (99) which attach to a card radio (2) for use in a wireless local area network. CONSTITUTION: The system relates to the connector antenna for using with card radio providing communication link within wireless local network. The planar antenna (1) has a latching mechanism (4) with a pair of release levers (6) which latch to slots in the frame of the card radio (2) to provide an attachment strong enough to be used as an extraction handle for the card radio (2). The flexible antenna has a flexible sheet with a conductive material applied in a shape specified and connected to the card radio (2) via an RF connection port. A removable tethered antenna (99) is disclosed having at the base of the tethered antenna a dovetailed connector which releasably rotates within a mounting plate affixed to the back of the monitor on a mobile computer.
Patent KR-20000050612-A (KR)
Inventor: KIM GI SU
IPC: H01J29/48
Filed: 1999-01-12
Abstract: PURPOSE: An electron gun supporting body of a color cathode ray tube is provided to prevent vibration of an electron gun caused by similarity in the natural frequency between the electron gun and a funnel. CONSTITUTION: An electron gun supporting body(21) such as a bulb space contact(BSC) is connected to a shield cup(10) and contacted with an inner wall of a neck part of a funnel so that the natural frequency of an electron gun may differ from that of the neck part. Therefore, when outside vibration is applied to the a color cathode ray tube, the transmission of the vibration toward the electron gun is intercepted. A thickness(d) of the supporting body(21) is from about 0.1mm to about 0.5mm, and more preferably from 0.315mm to 0.3325mm. Furthermore, the supporting body(21) may be composed of a corporation of plural supporting body units.
Patent KR-19990068063-A (KR)
Title: 차동 구동기용 클램프
IPC: H04L25/02
Filed: 1999-01-22
Abstract: 수신기/분석기에서의  패턴  관련  지터 ( jitter ) 를  감소시키도록  전송신호  및  신호  성분  진폭을  능동적으로  클램프시키는  디지탈  데이타  전송  라인회로가  개시되어  있다.       그러한  회로는  한쌍의  대향하는  다이오드  디바이스를  포함하는  데,  여기서  각각의  다이오드  디바이스는  전송라인을  형성하는  한쌍의  도전  와이어  양단에  연결되어  있다.        상기  다이오드  디바이스는  수신기에  나타나는  신호  진폭이  연속해서  전송되는  다수의  유사  펄스에  따라  그다지  변하지  않도록  2 개의  전송라인사이의  전위차를  클램프시킨다.        이러한  방식으로,  본  발명은  수신기에  나타나는  고전위 - 저전위로  부터의  크로스  오버 ( cross - over ) 를  이루는  패턴  종속  지터를  감소시킨다.        상기  다이오드  디바이스에  수반하는  기생  캐패시턴스로,  본  발명의  회로는  어느  정도의  수신된  신호파형  평활화  및  고주파  필터링을  제공한다.
Patent KR-19990077556-A (KR)
Title: 액티브미러
IPC: G02B26/06
Filed: 1999-03-03
Abstract: 본 발명은 반사되는 박막 (1), 판대 (2) 및 하나 이상의 액츄에이터 (31-36)를 포함하는 액티브 미러에 관한 것으로, 제 2 박막 (4) 은 판대 (2) 와 결합되어 있고, 하나 이상의 액츄에이터 (31-36) 는 2개의 박막 (1, 4) 과 작용 결합된다.  바람직하게는 중심 평면 (M) 에 대해 대칭으로 구성된다.
Patent KR-20000066348-A (KR)
Inventor: KIM YEONG TAE
IPC: A47F10/00
Filed: 1999-04-15
Abstract: PURPOSE: A drink serving system using a water current is provided to move a liquor glass containing liquor near a table of customers by using a water current and to let the customers drink the liquor when the customer desires to drink. CONSTITUTION: A host sitting around a table(2) for a host confirms the customers sitting around a table(4) for customers. After filling liquor in a liquor glass(3), the liquor glass is floated on the water circulating along a channel(1). By determining a table assignment button among many table specifying buttons(17) of the table for a host corresponding to the number of the table for customers, the liquor glass approaches the table for customers selected by the host. The liquor glass is sensed by a sensor and the sensing signal is transmitted to a controller directly. A liquor glass stopper stops the liquor glass. Thereby, the liquor glass stops in front of the table for customers selected by the host.
Patent KR-20000049308-A (KR)
Inventor: JANG EUNG SUN
IPC: H01Q1/24
Filed: 1999-06-18
Abstract: PURPOSE: An antenna of a portable wireless device is provided to minimize the size of the antenna by using a teflon bobbin in the inner side of a spring which is mounted to the interior of a helical antenna. CONSTITUTION: A hole(2) is formed at the central portion of a teflon bobbin(4). A rod antenna(10) is inserted into the hole(2) which is formed in the teflon bobbin(4). A C-ring(11) which has a plurality of resilient pieces is fixed to the inner sider of the hole(2). A spring(6) is wound on the periphery of the teflon bobbin. A chip coil is fixed between the lower end of the spring(6) and a pattern(7) by soldering.
Patent KR-20010002980-A (KR)
Inventor: LIM CHUNG BIN
IPC: A23L11/20
Filed: 1999-06-18
Abstract: PURPOSE: A manufacturing method of Cheongkukjang (ground fermented soybeans) and a manufacturing method of a hamburger patty by using the Cheongkukjang are provided to remove the disgusting smell of Cheong-kuk-jang and give nutrition to hamburger patties. CONSTITUTION: Cheongkukjang and a hamburger patty are manufactured by swelling white beans, accumulating the beans, covering with cotton, fermenting at the temperature of 40-50deg.C and the humidity of 50% for 3-4 days, adding and crushing salt or/and hot pepper powder to ferment again at 3-7deg.C for 20-30 days. Cheongkukjang manufactured under the condition has a tasty smell instead of a disgusting smell. The white beans is heated for 1 hours with 1.5kg/cm3. A ratio of pork meat and Cheongkukjang is 1:0.5-1.
Patent KR-20000006517-A (KR)
Inventor: WATSON RICHARD WILLIAM
IPC: C01B17/04
Filed: 1999-06-28
Abstract: PURPOSE: A vapor sulfide forming method is provided to effectively control the flow velocity by burning the hydrogen sulfide by three stages and to decrease the risk of the damage to lining. CONSTITUTION: The vapor sulfide forming method is composed of the steps of:operating a burner; feeding the gas including the hydrogen sulfide; mixing the gas with the first combustible gas in flames; feeding the gas including the hydrogen sulfide in flames of the inlet of the burner; and recovering the gas mixture including vapor sulfide, vapor, sulfur dioxide, hydrogen and residual hydrogen sulfide.
Patent KR-20010008677-A (KR)
Inventor: YANG SUN BAE
IPC: H02H7/085
Filed: 1999-07-02
Abstract: PURPOSE: A circuit and a method for protecting overload are provided to prevent the amount of the current from being excessive by limiting the current to a current limit level value. CONSTITUTION: Whether the state is the initial operation state or the safety operation state is determined. The current limit level value is outputted according to the determined state. A microcomputer(100) generates a switch driving signal for driving a compressor motor. A digital/analog converter(200) converts the current limit level value outputted in the microcomputer(100) to an analog value, and outputs the value. A comparator(300) compares the current limit value of the analog outputted from the digital/analog converter(200) with a detecting current flowing through a compressor motor. The comparator(300) outputs the current limit signal to a current limit amount. A gate signal generating section(400) generates a gate signal which enable the limited current to be flowed.