baber/WOPTO huggingface dataset:
Patent KR-20000021618-A (KR)
Title: Stack memory
Inventor: IM DU YONG
IPC: H01L23/50
Filed: 1998-09-30
Abstract: PURPOSE: A stack memory is provided to prevent a short between common leads by placing chip select bar pins of a bottom device and a top device in the same position. CONSTITUTION: In a stack memory having a multilayer composed of a first and a second memory devices, a chip select lead and a no-connect lead protruded out of a first memory device and corresponding leads protruded out of a second memory device are connected to each other by a common lead. The chip select lead and no-connect lead of a first memory device are disposed in a side in which a chip select lead and a no-connect lead of the second memory device are disposed. And the chip select lead of the first memory device is connected to the no-connect lead and the common lead of the second memory device by the common lead and the no-connect lead of the first memory device is connected to the chip select lead of the second memory device by the common lead.
Patent KR-20000025300-A (KR)
Title: Method for assigning frame memory clock in image encoder
Inventor: KIM GI JIN
IPC: H04N19/433
Filed: 1998-10-09
Abstract: PURPOSE: A method for assigning a frame memory clock in an image encoder is provided to record data to a frame memory effectively and to read the record data effectively by distributing a clock by a horizontal line unit of a macro block. CONSTITUTION: In a method for assigning a frame memory clock in an image encoder, in a case that a picture type of a macro block is a P-picture or an I-picture, during one macro block time, first three clocks are assigned to reading, and next three clocks are assigned to writing. In a case that the picture type of the macro block is a B-picture, during the macro block time, first three clocks are assigned to a forward reading for a forward prediction, and next three clocks are assigned to a reverse reading for a reverse prediction. In a case that the picture type is the B-picture, two clocks are assigned to a forward/reverse/bi-direction prediction data process, respectively. Two clocks are assigned so that a pixel of the same line of the same macro block is repeated three-times at reading present data. Two clocks are assigned every correspondence so that three prediction data and three present data correspond to each other at a prediction error calculation.
Patent KR-20000026917-A (KR)
Title: Transmitter/receiver circuit
Inventor: JEONG SEOK HYEON
IPC: H04L12/00
Filed: 1998-10-23
Abstract: PURPOSE: A circuit of transmitting and receiving data is provided to decrease electromagnetic interference(EMI) generated in transmitting data. CONSTITUTION: A circuit of transmitting/receiving data to/from an external circuit comprises: a first data terminal: a second data terminal: a converting element for converting parallel data to a single pulse signal and a complementary signal corresponding to the value of the parallel data during the time of transmitting data to the external circuit, and outputting the converted signals through the first and the second terminals; and a restoring element for restoring the single pulse signal and the complementary signal inputted from the first and the second data terminals respectively during the time of receiving data from the external circuit to data having a first pulse width indicating the start of data transmission and a second pulse width corresponding to the absolute value of the data.
Patent KR-20000027011-A (KR)
Title: Cassette conveying system used for semiconductor manufacturing process
Inventor: KIM YOUNG KEUN
IPC: H01L21/68
Filed: 1998-10-26
Abstract: PURPOSE: A cassette conveying system used for a semiconductor manufacturing process is provided to prevent a cassette from being shocked by exchanging the cassette in response to a port of debarkation opener and a main body. CONSTITUTION: A cassette conveying system used for a semiconductor manufacturing process includes a main body on which a portion of elevator for elevating stacked is received through an opened top. A loading/unloading part is mounted on both sides of the elevator to make it possible for a support opposing a bottom of the cassette to move in four directions (front ward, rearward, leftward and rightward). The loading/unloading part is lattice-shaped to correspond to and be fixed on inner walls of the main body.
Patent KR-19990045034-A (KR)
Title: 슬러리 분배 장치
IPC: B24B57/02
Filed: 1998-11-05
Abstract: 회전하는 바퀴에 의해 슬러리를 분배하는 슬러리 분배기가 집적 회로를 생산하는데 사용되는 화학적 기계적 연마 공정에 제공된다. 두 번째 구성에서, 슬러리 분배기는 한 쌍의 반대 방향으로 회전하는 바퀴들을 사용한다. 바퀴들은 요망되는 양의 슬러리를 분배하기 위하여 경험적으로 결정된 소정의 속도로 가변 속도 모터들에 의해 구동된다. 회전하는 바퀴들의 형태가 분무의 수직방향 분포를 제어한다. 슬러리 분배기 하우징의 개구들과 바퀴들의 회전 속도는 분무의 수평방향 분포를 조절한다. 슬러리 분배기는 슬러리에 대해 화학적으로 불활성인 재료들로부터 만들어질 수 있다.
Patent KR-20000033235-A (KR)
Title: Metal mold for vulcanizing bladder
Inventor: NOH YEONG IL
IPC: B29D30/08
Filed: 1998-11-20
Abstract: PURPOSE: A metal mold for vulcanizing a bladder is provided to prevent inflow of air to a bladder vulcanized and to restrain the occurrence of leakage in a bladder by improving the structure of a core metal mold. CONSTITUTION: A metal mold for vulcanizing a bladder is composed of an inner metal mold(1), an outer metal mold(2) for vulcanizing inner and outer faces of a bladder(4) and a core metal mold(3) installed in the outer metal mold to mold a combined end(40) of the bladder. A molding part(11) molding the combined end of the bladder is formed on the upper portion of the inner metal mold. A runner(31) wherein rubber liquid is flowed is installed between the upper face of the inner metal mold and the bottom of the core metal mold. The rubber liquid intruded via a nozzle(30) installed in the core metal mold and flowed into the runner flows into the molding part via the gap formed on the core metal mold and vulcanizes the bladder.
Patent KR-20000037689-A (KR)
Title: Cryostat for liquefied nitrogen
Inventor: KANG HYEONG SEOK
IPC: F25B9/00
Filed: 1998-12-01
Abstract: PURPOSE: A cryostat for liquefied nitrogen is provided to be accurately operated for a long time over the range between the normal temperature and 65 K lower than the liquefaction temperature of liquefied nitrogen (77 K). CONSTITUTION: A cryostat for liquefied nitrogen includes a cryostat body(20), a liquefied nitrogen storing vessel(1) contained in the cryostat body(20) and communicated with an end of a liquefied nitrogen supplying pipe(2) inserted into the cryostat body(20), and a cold chamber(5) provided on an one end of the liquefied nitrogen storing vessel(1) and communicated with he liquefied nitrogen storing vessel(1) through a supplying piping(3). The cryostat also includes a flow rate impedance(4) provided on the supplying piping(3) for constantly feeding the liquefied nitrogen to the cold chamber(5) while maintaining constant difference in pressure between the storing vessel(1) and the cold chamber(5), a cold finger(14) provided on one side of a heater(13) attached to the cold chamber(5), and a temperature sensor(15) provided on one end of the cold finger(14) for controlling the heater(13) by an outer control means based on the comparison between the measured temperature of the cold finger(14) and a predetermined temperature. The cryostat further includes heat exchangers(7,8) provided on upper and lower portions of the storing vessel(1), and a discharge piping(6) sequentially communicated with the cold chamber(5) and the heat exchangers(7,8) and having a discharge valve(9) provided on its end extending through the cryostat body(20).
Patent KR-20000040329-A (KR)
Title: Checking method of connection status for vcr
Inventor: KIM YONG UK
IPC: G11B15/02
Filed: 1998-12-17
Abstract: PURPOSE: A check method of connection status for a VCR is provided to display a present connection status by automatically checking the connection status of a signal line between a TV and the VCR. CONSTITUTION: Outputs of a video signal and an audio signal are tested. A detection of video signal is performed after outputting a testing signal and a detection of audio signal is performed when the video signal is detected in the detecting process of video signal. An OSD(on screen display) is outputted according to the detection of audio signal in a first detecting process of audio signal and the detection of audio signal is performed when the video signal is not detected in the detecting process of video signal. The OSD is outputted according to the detection of audio signal in a second detecting process of audio signal.
Patent KR-19990024217-A (KR)
Title: 골절치유 효능이 있는 홍화씨추출물
IPC: A61K36/286
Filed: 1998-12-22
Abstract: 본 발명은 홍화씨로부터 골절치유효능이 있는 홍화씨추출물 및 상기 홍화씨 추출물의 골강화 및 골절치유촉진을 위한 건강식품으로써의 용도에 관한 것으로 5% 홍화씨 분말, 홍화씨 열수추출물 및 에탄올추출물을 흰쥐에게 급여하여 사육한 후 골절을 유도하고 상기 5% 홍화씨 분말, 홍화씨 열수추출물 및 에탄올추출물을 계속 실험식이로 급여한 후 늑골을 채취하여 골조직을 형태학적으로 분석하고 골조직의 표본을 제작한 후 현미경으로 관찰하고 파골세포수 분석 및 혈액을 생화학적으로 분석한 결과, 식이의 5% 수준으로 급여된 토종 홍화씨 분말, 에탄올추출물 및 열수추출물은 골절된 늑골의 치유속도를 빠르게 하여 복구에 걸리는 시간을 단축시켰고 특히 홍화씨 열수추출물은 골절 회복과정에서 뼈의 재구성을 지속적으로 활발히 진행시키는 뛰어난 효과가 있다.
Patent KR-20000042099-A (KR)
Title: Method for informing non-completion call state information of local full electronic exchange in v5.2 interface
Inventor: CHEONG MYEONG HO
IPC: G06F15/00
Filed: 1998-12-24
Abstract: PURPOSE: A method for informing non-completion call state information of a local full electronic exchange in a V5.2 interface, is provided to transmit an error generation state to a subscriber transmission device in the local full electronic exchange, when the local full electronic exchange doesn't transmit a call setup confirmation message to the subscriber transmission device though states of the subscriber transmission device and the local full electronic exchange are normal, in a call demand by the subscriber transmission into the local full electronic exchange. CONSTITUTION: A method for informing non-completion call state information of a local full electronic exchange in V5.2 interface, comprises the steps of: setting a message representing state information of non-completion call of the local full electronic exchange in a port control protocol message transmitted to between the local full electronic exchange and a subscriber transmission device; constantly detecting the non-completion state in the local full electronic exchange in a call transmission between the local full electronic exchange and the subscriber transmission device; a first-converting to the set message when the non-completion state is detected; a second-converting to a protocol message which can transmit the first converted message to the subscriber transmission device.
Patent KR-20000042401-A (KR)
Title: Ferroelectric random access memory
Inventor: GYE HUN WOO
IPC: G11C11/22
Filed: 1998-12-24
Abstract: PURPOSE: A FeRAM(Ferroelectric Random Access Memory) is provided to stably sense data by using a half supply voltage as a reference voltage. CONSTITUTION: A FeRAM contains a ferroelectric capacitor(410) between a storage node(a) and a plate line. A separate drive ferroelectric capacitor(420) is connected to the plat line for driving a drive node(b) by using a certain voltage. When reading data from the FeRAM, a bit line connected to the storage node is pre-charged into a half supply voltage(Vcc/2) for being driven at a ground voltage. Moreover, the drive node is pre-charged into the half supply voltage for being driven at a supply voltage(Vcc). Thus, the data signal from the plate line is amplified by using the half supply voltage as the reference voltage.
Patent KR-20000043228-A (KR)
Title: Method for fabricating semiconductor device
Inventor: LEE WON CHUL
IPC: H01L21/28
Filed: 1998-12-28
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided which can improve the process yield and the reliability of device operation by omitting a process to form a storage electrode contact. CONSTITUTION: A method for fabricating a semiconductor device can omit an additional photolithography process to remove an etch stopper on a peripheral circuit region on a semiconductor substrate(12), by the processes of: forming a first inter level insulation film(20) on top of the semiconductor substrate where a storage electrode contact plug(22) and a bit line(24) are formed; forming the etch stopper revealing a part where a storage electrode contact is to be formed on a cell region of the substrate on top of the first inter level insulation film; forming a second inter level insulation film(30) on top of the etch stopper; revealing the storage electrode contact plug by etching the second and first inter level insulation films; and forming a storage electrode connected to the storage electrode contact plug. The method also simplifies the process by forming the storage electrode without a process to form another storage electrode contact connected to the storage electrode contact plug.
Patent KR-20000004888-A (KR)
Title: Forward link power control device of cdma mobile communication system and forward link power control method
Inventor: LEE YOUNG JO
IPC: H04B7/26
Filed: 1998-12-29
Abstract: PURPOSE: A forward link power control device of CDMA mobile communication system investigates a pilot channel and a traffic channel of a forward link, and determines a power control bit for a power control of a forward link. CONSTITUTION: A forward link power control device includes a power control bit detector(160) for detecting only a certain bit whose receiving code symbol's transmission rate is not changed from a correlation value about a code symbol received from a traffic channel, a power inference part(180) for inferring average value of a received power by using a correlation value about both the output bit of the power control bit detector and the code symbol received via the pilot channel. A comparator(210) compares the average value of the received power with a reference value for a power control, and generates a deviation according to the result. A power control bit generator(220) outputs a predetermined power control bit according to the deviation from the comparator. Accordingly, the forward link power control device inferences a power from a code symbol of the received CDMA signal via a traffic channel and a pilot channel, determines a power control bit, and enhances a system performance of the entire system when controlling a power between the mobile station and the base station.
Patent KR-20000044438-A (KR)
Title: Holder for hand-free kit
Inventor: PARK JUN SANG
IPC: H04B1/38
Filed: 1998-12-30
Abstract: PURPOSE: A holder for a hand-free kit is provided to equip on a grille of an air conditioner use by moving a base plate upward/downward, not prevented form air of the air conditioner, and to rotate for a requested direction by a hinge. CONSTITUTION: A holder for a hand-free kit comprises a guide plate(1), a first hinge, a base plate(2), a cellular phone holder(4), a movable plate(3), a moving device, an interface connector(52), a second hinge(7), and a box. The guide plate(1) has a clip for equipping on a grille of an air conditioner, and at least one hole for passing an air of the air conditioner. The base plate(2) has the first hinge, and moves up/down by the guide plate(1). The cellular phone holder(4) moves for a left/right direction in the middle of the first hinge, and has a folder part for fixing a cellular phone. The movable plate(3) moves up/down from the cellular phone holder(4). The moving device moves the movable plate(3) up/down from the cellular phone holder(4). The interface connector(52) is connected to the cell phone electrically. A recess is fixed a micro phone. The box is equipped on the movable plate(3), enabled of a up/down rotation.
Patent KR-20000044665-A (KR)
Title: Path matric reducing method for viterbi decoding
Inventor: BAEK JONG SEOB
IPC: H03M13/23
Filed: 1998-12-30
Abstract: PURPOSE: A path matric reducing method for a Viterbi decoding is provided to prevent a performance drop owing to a data loss, and to minimize a cost at realizing a hardware. CONSTITUTION: In a path matric reducing method for a Viterbi decoding, a branch matric(BMAi) is added with a path matric(PMAi) through a first adder, and then the added value is set to a value(SAi). A branch matric(BMBi) is added with a path matric(PMBi) through a second adder, and then the added value is set to a value(SBi)(100). Whether the value(SAi) is more than the value(SBi) is judged through a comparator(110). If so, the value(SBi) is set to a path matric value(PMi)(120). If not, the value(SAi) is set to a path matric value(PMi)(130). The path matric value(PMi) is compared with a threshold value(PMiT)(140). In a case where the value(PMi) is more than the threshold value(PMiT), the threshold value(PMiT) is subtracted from the path matric value(PMi), and then the subtracted value is set to the path matric value(PMi)(150).
Patent KR-20000045189-A (KR)
Title: Channel selection device by speech recognition in television reciver
Inventor: KIM JI HYUN
IPC: G10L15/00
Filed: 1998-12-30
Abstract: PURPOSE: A channel selection device by speech recognition in a television receiver is provided to switch automatically channels according to a stored voice of a specific character. CONSTITUTION: A channel selection device by speech recognition in a television receiver comprises a voice signal storage portion(232), a voice signal detection portion(234), a voice signal analysis portion(236), a voice signal comparison portion(238) and a micro computer(218). The voice signal storage portion stores voice signals of a first channel according to a control signal. The voice signal detection portion detects voice signals received from a second channel. The voice signal analysis portion analyzes the detected voice signals. The voice signal comparison portion compares the output form the voice signal analysis portion with the voice signals stored in the voice signal storage portion. The microcomputer provides a control signal for storing the voice signals and a selection signal for receiving broadcasting of the second tuner.
Patent KR-20000045856-A (KR)
Title: Method for forming gate electrode
Inventor: RYU HYEOK HYEON
IPC: H01L21/28
Filed: 1998-12-30
Abstract: PURPOSE: A method for forming a gate electrode is provided to form a titanium silicide layer without a bridge, thereby preventing an electrical short due to the bridge and facilely performing an annealing process. CONSTITUTION: A method for forming a gate electrode comprises steps of forming a gate electrode by a masking etching process after stacking a gate oxide layer(20) and a polysilicon layer on a semiconductor substrate(10), stacking a photoresist to expose the polysilicon layer of the gate electrode, etching the polysilicon through a contact of the photoresist at a desired depth, stacking a titanium layer on the semiconductor substrate, forming a titanium silicide layer by an annealing process and removing a residue on a spacer layer(40), and equalizing the titanium silicide layer by an annealing process.
Patent KR-19990036106-A (KR)
Title: 프로그램 가이드 제어 장치
IPC: H04N5/445
Filed: 1997-05-29
Abstract: 본 발명에 관한 프로그램표 가이드 제어 장치는, 일시 정보와, 프로그램 타이틀 정보와, 장르 정보를 포함하는 프로그램표 화상을 생성하여, 타이틀 정보에 관해, 수신중의 방송 채널에 관한 프로그램의 타이틀만을 표시하고, 또한, 표시되는 장르 정보를 유저가 임의로 등록할 수 있도록 한다.  또한, 유저의 시청 빈도가 높은 프로그램을 자동적으로 등록하여 그것을 장르 정보에 포함할 수 있다.  이것에 의해, 유저가 매우 사용하기 편리한 전자 프로그램 가이드(EPG)를 제공할 수가 있다.
Patent KR-19990037669-A (KR)
Title: 프롤릴엔도펩티다아제 억제제
IPC: C07D207/452
Filed: 1996-07-26
Abstract: 본 발명은 새로운 프롤릴엔도펩티다아제 억제제인 화학식 (Ⅰ)의 화합물에 관한 것이다.
Patent KR-19990044210-A (KR)
Title: Soil and water remediation and enhancement process and apparatus therefor
Inventor: RUNYON LARRY
IPC: B09C1/10
Filed: 1996-08-28
Abstract: A simplified method is disclosed for handling growth and dispersion of microorganisms in solution and which is adaptable to many different end-use applications, including treatment of turf, decorative and ornamental vegetation, horticultural plants and agricultural crops. Provision of the initial microorganism materials in the form of aqueous suspensions which are incorporated in liquid form into a large volume of water in a vessel and subsequent growth of biomass in the vessel provides for simplicity and flexibility not previously obtained from the prior art devices and methods. The method provides biomasses containing microorganisms to enhance vegetation growth, provide disease- and/or pest resistance, detoxification, solids removal, or any combination thereof. Apparatus to carry out the method of the invention is also disclosed, includes efficient and simply liquid feed devices.
Patent KR-19990063648-A (KR)
Title: 글루타민산 데카복실라제에 대한 항체와 폴리(에틸렌 글리콜)공액물을 섬세포에 제공하는 방법
IPC: A61K47/48
Filed: 1996-09-20
Abstract: 질병으로 발전할 경향이 있는 개인에게 인슐린 의존성 진성 당뇨병(IDDM)의 개시를 지연시키는 방법에 대해 상술하고 있다.  방법은 글루타민산 데카복실라제에대한 면역학적으로 활성이 있는 단클론 항체 또는 이의 단편과 면역인지를 방해하기 위해 단클론항체 또는 이의 단편의 주변에 수화 껍질을 제공할 수 있는 비-면역원성 친수성 고분자로 구성된 효과량의 조성물을 개인에게 투여하는 것으로 구성된다.  고분자로는 폴리(에틸렌 글리콜)이 적절하다.  IDDM 환자에서 인슐린증을 감소시키는 방법과 이의 조성물에 대해 상술하고 있다.
Patent KR-20000064268-A (KR)
Title: 디지털 데이터 전송장치 및 전송방법
IPC: H04L12/40
Filed: 1997-07-18
Abstract: 판정신호들과 패킷 데이터는 패킷 데이터의 4-비트/5-비트 변환이 쉽고 판정신호들을 5-비트 코드 데이터로 변환하는 변환 블록(3)을 제공함에 의해 전송 블록들(6A 및 6B)과 수신 블록들(7A 및 7B)을 통하여 5-비트 코드 데이터로 수신되고 전송된다. 이러한 구성으로, 디지털 직렬 데이터 인터페이스(이를테면 IEEE1394 고성능 직렬 버스 표준)내 노드들 사이의 케이블 길이들이 데이터 전송이 증가되기 전에 버스 사용 우위의 판정을 실행하며 원거리 전송을 용이하게 하는 디지털 직렬 데이터 인터페이스 장치가 실현된다.
Patent KR-19990066997-A (KR)
Title: 조혈성 간세포의 이동 방법
IPC: A61K33/243
Filed: 1996-10-24
Abstract: 본 발명은 KC, groβ, groα 및 groγ의 천연, 변형 또는 다합체 형태의 유효량을 동물에 투여함으로써, 조혈성 간세포를 골수로부터 말초 순환계로 이동시키는 방법을 제공한다.
Patent KR-20000065200-A (KR)
Title: 야광성 또는 형광성의 인조석 조성물
IPC: C04B26/02
Filed: 1997-03-05
Abstract: 수지함유량은 11중량% 이하에 있어서, 10∼70메쉬 크기의 무기질 세립성분의 중량(W 1 )의 0.3∼1.0W1이 투명성 무기질 세립성분에서 100메쉬 미만의 무기질 미립성분의 중량(W 2 )과 100메쉬 미만의 야광성 혹은 형광성 성분의 중량(W 3 )과가 
     W 1 :(W 2 +W 3 ) = 1:2∼5:1, 
     W 2 : W 3 = 1 : 2 ∼ 5 : 1 
     의 관계인 야광성 또는 형광성의 인조석 조성물을 제공한다.
Patent KR-20000051777-A (KR)
Inventor: KIM WON TAE
IPC: H05K13/02
Filed: 1999-01-26
Abstract: PURPOSE: A rotary turn-over for carrying a PCB assembly is provided to improve the working efficiency and to reduce the cost by preventing the damage due to the dropping. CONSTITUTION: A rotary turn-over for carrying a PCB assembly(20) prevents the congestion of the PCB assembly due to the unbalance of working speed of a prior process and a post process of the PCB assembly passing through a buffer along a working line after soldering. The rotary turn-over for carrying the PCB assembly comprises: a first driving motor(33) driving according to the entry of the PCB assembly being sent after soldering; a conveyor turn-over(30) loading by supporting the PCB assembly horizontally; a second driving motor(37) rotating the conveyor turn-over in 180 degree and an air cylinder(38) moving by rotating the conveyor turn-over in a sloped angle of 30 degree.
Patent KR-19990072922-A (KR)
Title: 기기인증및암호통신시스템
IPC: G07B15/06
Filed: 1999-02-25
Abstract: 각각 다른 개별 비밀정보를 기억하는 복수의 사용자측 기기와 시스템측 기기와 관리장치로 구성되는 시스템이며, 상기 관리장치는 각 사용자측 기기에 대한 상기 개별 비밀정보에 대하여 회복형 서명변환을 행함으로써 키 캡슐 데이터를 작성하여 해당 사용자측 기기에 배포하고, 상기 회복형 서명변환에 대응하는 서명검증변환을 행하기 위한 소정키를 시스템측 기기에 배포하고, 상기 각 사용자측 기기는 기기인증 및 암호통신을 행할 때에 상기 관리장치에 의해 배포된 상기 키 캡슐 데이터를 시스템측 기기에 송신하고, 이것을 수신한 상기 시스템측 기기는 상기 관리장치에 의해 배포된 상기 검증 키를 이용하여 서명 검증변환에 의해 상기 키 캡슐 데이터로부터 상기 개별 비밀정보를 복원한다.  이에 따라 상기 사용자측 기기와 상기 시스템측 기기는 개별 비밀정보를 공유할 수 있으므로, 이것을 키로서 이용하여 양자의 한쪽이 비밀키 암호 알고리즘에 기초하여 암호화하여 데이터를 송신하고 다른쪽이 당해 데이터를 수신하여 비밀키 암호 알고리즘에 기초하여 복호함으로써 양자간에서 기기인증 및 암호통신을 행한다.
Patent KR-20000060018-A (KR)
Inventor: CHANG SOO YOUNG
IPC: H04B7/26
Filed: 1999-03-11
Abstract: PURPOSE: An apparatus for wirelessly controlling a circuit breaker/switch using a public network is provided for decreasing an installation cost based on a wiring work and obtaining an easier maintenance. CONSTITUTION: A sensor unit(24) detects the states(current, voltage, temperature, etc.) of a circuit breaker/switch(12). A data processor(23) processes various information. A wireless communication transmission and receiving unit(22) transmits a processed data value to a center control unit and receives an instruction from the central control unit(11). A switch opening and closing driving unit(25) directly controls the circuit breaker/switch(12). The sensor unit(24) includes detection sensors with respect to the operation state of the circuit breaker/switch(12).