baber/WOPTO huggingface dataset:
Patent KR-20000019359-A (KR)
Title: Preparing method of ethylene propylene diene monomer(epdm) rubber reinforced polyamide 12 copolymer
Inventor: KONG TAE HYUN
IPC: C08G69/14
Filed: 1998-09-10
Abstract: PURPOSE: A preparation method of EPDM rubber reinforced polyamide 12 copolymer by using laurel lactam, a monomer of polyamide 12 instead of polyamide 12 and blending an excess catalyst with EPDM rubber is provided which improves impact strength, tensile strength and bending strength and shortens the processing time. CONSTITUTION: A process is disclosed for making ethylene propylene diene monomer rubber reinforced polyamide 12 copolymer which comprises: pouring (A)laurel lactam instead of polyamide 12; (B)2-20 wt.% of EPDM rubber substituted a functional group for anhydrous maleic acid based on 100 wt.% of laurel lactam; (C)0.3-2.1 moles of alkaline metal catalyst based on 100 moles of laurel lactam; (D)0.2-2.0 moles of normal acetyl carprolactam initiator based on 100 moles of laurel lactam into a twin screw extruder, with the proviso that when the catalyst and the initiator are poured simultaneously into the extruder with laurel lactam and EPDM, larger quantity of catalyst than the initiator is poured in it.
Patent KR-19980087729-A (KR)
Title: 치형 끼워맞춤을 이용한 디씨 모터케이스
Filed: 1998-09-10
Abstract: 본 특허는 딥드로잉(deep drawing) 공정에 의하여 DC 모터를 감쌀수 있는 모터케이스를 제조하는 대신에, 판재를 360도 굽힘가공(bending)하여 DC 모터케이스를 제조하는 것으로 굽힘가공 때에 판재의 끝단에 치(齒)형 구조를 적용하여 억지끼워맞춤으로 양 끝단을 쉽게 접합하여 스프링 백 현상에 의하여 판재가 원 상태로 되돌아가려는 것을 방지함
Patent KR-20000021857-A (KR)
Title: Mheg-5 engine and event processing method using mheg-5 engine
Inventor: WON SEOK JIN
IPC: G06F9/44
Filed: 1998-09-30
Abstract: PURPOSE: An MHEG-5 engine and event processing method using MHEG-5 engine is provided to satisfy an event processing condition set in MHEG(Multimedia and Hypermedia Information Coding Experts Group)-5 engine by processing a scenario based on an occurrence sequency to an asynchronous event and preferentially processing a scenario to a synchronous event. CONSTITUTION: An information container(10) has a plurality of MH objects(11,12,13) and an MHEG document(14) having a scenario. MH objects(11,12,13) are composed by a decoded expression media(audio and video). A relation among MH objects(11,12,13) corresponding to an event is described in the scenario. An asynchronous queue(21) stores an asynchronous event occurred from the outside and an asynchronous event provided from a scenario processing unit(24). An event processing unit(22) searches the MHEG document(14), detects a scenario corresponding to an event, and providing the detected scenario to the a scenario storing queue(23). The scenario storing queue(23) stores scenarios provided from the event processing unit(22).
Patent KR-20000021950-A (KR)
Title: Controller of heavy equipment and method thereof
Inventor: LEE SHI CHEON
IPC: E02F9/20
Filed: 1998-09-30
Abstract: PURPOSE: A controller is provided to change a work characteristic of a work equipment as enabling to use by changing a capacity of a hydraulic pressure system with the same hydraulic pressure actuator without substituting the hydraulic pressure actuator. CONSTITUTION: An excavator is composed of: a hydraulic pressure pump(40) for supplying working oil, a bucket cylinder(14), a boom cylinder(16), an arm cylinder(18), a traveling motor(20), a rotation motor(22) and an operator(42) for generating an operation signal of a driver, a program converter(45) for changing a capacity of an operation of many hydraulic pressure actuators and a controller(44) for delivering the control signal corresponding to the operation capacity established by the program converter(45) to a first control valve(46) and to a second control valve(48) according to the operation of each operator(41).
Patent KR-19990014353-A (KR)
IPC: C12N5/07
Filed: 1998-10-17
Abstract: A method for removing fibroblasts growing from the surface of in vitro proliferated Langerhans islets, comprising:  (1) providing a plurality of proliferated islets having fibroblasts growing therewith and collected from a gel proliferation matrix; (2) adding an enzyme to the collected islets and to any gel adhering to the surface of the collected islets and incubating to provide an incubated product; and (3) aspirating the incubated product to cause the gel acted on by the enzyme to be removed from the islets, thereby exposing the fibroblasts to the force being created during the aspiration causing the fibroblasts to become separated from the surface of the islets to prepare fibroblast-free islets.
Patent KR-20000026736-A (KR)
Title: Method of controlling operation of boiler
Inventor: KANG BYEONG HUI
IPC: F24H1/00
Filed: 1998-10-22
Abstract: PURPOSE: A boiler operation controlling method is provided to make a boiler repeatedly operate by controlling the operation and stoppage time of the boiler according to the set up temperature when driving for heating according to the heating water set up temperature. CONSTITUTION: A boiler operation controlling method controls by varying the duty ratio of operation time and stoppage time according to the range of the temperature of the set up heating water the repeated set up value by a user. Herein, the temperature of the heating water is controlled more precisely and promptly by operating a boiler by varying the operation and stoppage time of the boiler according to the temperature of the heating water set up by an indoor temperature controller when driving for heating. And if a user changes the set up temperature but the changed value is not straight applied, the reducing of a burner or the increase of the fuel consumption due to the fooling or misoperation is prevented by changing the operation and stoppage time of the boiler.
Patent KR-20000027354-A (KR)
Title: Method for manufacturing an integrated high-voltage power device
Inventor: KIM JONG DAE
IPC: H01L21/762
Filed: 1998-10-28
Abstract: PURPOSE: A method is provided to simplify processes by forming a gate oxide layer of a p-channel field power device and a field oxide layer at the same time a trench is filled y forming a TEOS oxide layer. CONSTITUTION: A first wall(30B) of a first conductive type on an epitaxial layer. A second wall(34) of a first conductive-type having a certain depth from the surface of the first wall(30B) and a drift region of a second conductive-type adjacent to the second wall(35) are formed. A semiconductor substrate is selectively etched to form a trench(35) penetrating the first and second walls(30B, 34). A first TESO oxide layer(37) is formed on the interior of the trench(35) and on an entire structure. A second TESO oxide layer(39) are formed and selectively etched to formed a field oxide pattern(37A) and a gate oxide pattern(37B).
Patent KR-19990045053-A (KR)
Title: 음성 대역 분할 디코더
IPC: H03G9/00
Filed: 1998-11-05
Abstract: 음량 제어 장치(3)은 엠퍼싸이즈될 분할대역에 인접한 분할대역들이 얼마만큼 감소되었는지에 관한 데이타를 배율 갱신 장치(2)로부터 얻으며, 재생 배율을 감소되기 이전으로 복구하는데 필요한 재생 배율에 대응하는 범위까지 음량 제어(77)의 아날로그 오디오 신호 출력 레벨을 증가시킨다.  그 결과, 원하는 분할대역(즉, 엠퍼싸이즈될 분할대역)의 신호 레벨은 원하는 분할대역의 충분한 엠퍼씨스감을 얻을 수 있도록 증가한다.
Patent KR-19990045114-A (KR)
Title: 개선된 공업적 성능을 가지는 열가소성 탄성중합체를 제조하는방법
IPC: C08L23/02
Filed: 1998-11-09
Abstract: 본 발명은 공업용 수지, 올레핀 중합체 및 탄성중합 공중합체의 동적으로 가황처리시킨 혼합물 및 상기 공업용 수지 및 혼합물용 상용화제의 삼배합물을 포함하는 열가소성 탄성중합체의 제조 방법에 관한다.   상용화제는 별도의 단계에서 또는 1단계 공정의 제자리에서 제조할 수 있다.   본 방법으로 고온에서 구조적 통합성을 보유하며 양호한 인장 특성, 신장율 및 내유체성을 가지는 조성물을 얻는다.
Patent KR-20000032423-A (KR)
Title: Apparatus of driving pushing plate of handler
Inventor: HWANG YEOI SUNG
IPC: G01R31/28
Filed: 1998-11-14
Abstract: PURPOSE: An apparatus of driving pushing plate of handler is provided to perform correct test without separation for devices connected to a test socket. CONSTITUTION: An apparatus of driving pushing plate of handler includes a back base(10) and a driving gear(18) mounted on an end portion of a driving shaft placed on a side portion of the back base(10). A slave gear(16) mounted on an upper portion of the driving gear(18) to rotate in gear with the driving gear(18). An upper gear(14) mounted on an upper portion of the slave gear(16) to go in gear with the slave gear(16) and rotate with a rotating bar because an end of the upper gear(14) is fixed to the rotating bar. A lower gear(20) mounted in opposite direction of the upper gear(14) and rotate with a rotating bar because an end of the upper gear(14) is fixed to the rotating bar. A motor(22) placed on the upper portion of the drive gear(18) mounted on a bracket(24) to rotate the drive gear(18).
Patent KR-20000032879-A (KR)
Title: Service providing method for disabled person using home rf
Inventor: KIM NA YON
IPC: H04L12/28
Filed: 1998-11-18
Abstract: PURPOSE: A service providing method for disabled person using a Home RF is provided to set a so called disabled mode in system terminals and to set the disabled mode within a packet so as to be transmitted when requested to provide service for disabled person by the terminals. CONSTITUTION: A service providing method for disabled person using a Home RF comprises the steps of: converting a normal mode of terminals to a disabled mode using a menu of the Home RF terminal or a specific keypad sequence and conveying to a Medium Access Control(MAC) of terminals or a Connection Point(CP)(210); allotting some bits of MAC packets to the disabled mode(220); transmitting a packet through an SWAP MAC super-frame(230); processing request for a service in connection with the terminals transferred to the disabled mode(240); and processing payload data corresponding to the word-sound conversion in accordance with each disabled mode(250).
Patent KR-20000033904-A (KR)
Title: Method and device for detecting leakage of gas of gas boiler
Inventor: KIM JI WON
IPC: F24H1/00
Filed: 1998-11-26
Abstract: PURPOSE: A method and a device for detecting the leakage of gas are provided to elevate reliability of a gas alarm by compensating gas alarm signals by referencing indoor temperature and to perform warning of gas leakage by considering indoor temperature. CONSTITUTION: The value of gas alarm is output for over a certain number of times. An alarm for gas leakage is generated. Herein, the gas alarm value is compared to a certain reference value. If the gas alarm value is lower than the reference value, the leakage amount of gas is not so much, or noise of signals is output. Thus, an alarm cumulative counter is initialized. If the gas alarm value is over the reference value, the leakage amount of gas increases. Thus, the alarm cumulative counter is increased. If the alarm cumulative counter is over a certain number, a gas sensing device generates gas leakage signals. Thereby, alarm for gas leakage is performed.
Patent KR-20000039004-A (KR)
Title: Method for synchronizing base stations with each other using global positioning system and global navigation satellite system in code division multiple access system
Inventor: LEE HYON PYO
IPC: H04B7/26
Filed: 1998-12-10
Abstract: PURPOSE: A method for synchronizing base stations with each other in a code division multiple access(CDMA) system is provided to offer a reliable communication network with a relatively low cost, by receiving a global positioning system(GPS) signal together with a global navigation satellite system(GLONASS) signal from a satellite in order to synchronize base stations with each other. CONSTITUTION: A GPS/GLONASS receiver accepts the GPS and GLONASS signals transmitted from the satellite via an antenna(S10). The GPS/GLONASS receiver generates one pulse per second(1PPS) in response to the received GPS signal(S20). It is determined whether the satellite is turned off or a trouble on a reception path occurs due to a jamming signal in a band and thereby the GPS signal can not be recovered(S30). The GPS/GLONASS receiver generates the 1PPS using the GLONASS as a backup signal if the satellite is turned off or the trouble occurs(S40). The GPS and GLONASS signals can be received separately or simultaneously.
Patent KR-20000039327-A (KR)
Title: Dialing method of caller id
Inventor: LYU HYO JEONG
IPC: H04M1/26
Filed: 1998-12-12
Abstract: PURPOSE: A dialing method of a caller ID is provided to facilitate a caller ID editing process while memory is not so much required by dialing a pattern variable and a dialing pattern frequently used by a user by using a table. CONSTITUTION: After a pattern table is inputted to a system and a caller ID is stored in a call log, it is judged whether there is the same caller ID in a first step. Upon judgement in the first step, if there is no same caller ID, a dial key is pressed to enumerate numbers according to the pattern table to select a desired dialing number to judge whether the pattern number is a predetermined number in a second step. Upon judgement in the second step, if the pattern number is not a predetermined number, a dial key is pressed to store a selection pattern in a call log entry and make a phone call, while if the pattern number is a predetermined number, an edit key is pressed to performing editing and a dial key is pressed to make the pattern number to be a predetermined number and make a phone call in a third step. It is judged whether the pattern number of the same caller ID is a predetermined number, and if so, editing is performed and a dial key is pressed to make the pattern number to be a predetermined number to make a phone call, while if not, the dial key is pressed to copy the pattern value and make a phone call in a fourth step.
Patent KR-20000039437-A (KR)
Title: Insulation material by using yellow earth as main material and producing method thereof
Inventor: PARK JONG SHIK
IPC: E04B1/76
Filed: 1998-12-11
Abstract: PURPOSE: A new insulation material is provided to improve an insulation function and health by using yellow earth as the insulation material of a residential building. CONSTITUTION: Power or yellow earth having viscosity is added up with an adherent and is sufficiently kneaded. The kneaded mixture is molded in a plate shape, and papers are attached to both lengthwise faces of the molded mixture. The mixture is cut into a certain size and is perfectly dried with hot wind in a natural state so that an insulation material is completed. The dried and completed insulation material is attached to an indoor wall face by using an adherent like the existing insulation material construction method such as a plaster board.
Patent KR-20000041089-A (KR)
Title: Device for preventing edge of vertical electric plating tank using soluble anode from over-plating
Inventor: KIM TAE SU
IPC: C25D17/00
Filed: 1998-12-21
Abstract: PURPOSE: A device for preventing the edge of a steel strip from over-plating is provided to use for a vertical plating tank using a soluble anode and is difficult to install an automatic apparatus for screening the edge caused by interference of anode replacement. CONSTITUTION: A device vertically inserts a steel strip(4) into a vertical electric plating tank(1). The vertical electric plating tank uses a soluble anode(3). The device is composed of an edge screen(6), an edge sensor(5), a linear mover(7), a motor(8) and a controller(9). The edge screen is made of an insulating material for screening the edge of the steel strip and the sensor senses the edge. The linear mover moves the edge screen to the steel strip and the motor drives the linear mover. The controller controls the movement of the motor with a signal from the edge sensor.
Patent KR-19990064405-A (KR)
Title: 회로기판의 솔더크림 도포용 블레이드
Filed: 1998-12-21
Abstract: 본 발명은 회로기판의 솔더크림 도포용 블레이드에 관한 것으로, 회로기판 보드(1)의 상부에 솔더크림을 도포하는 프린터장치(2)가 설치되되, 상기 프린터장치(2)의 하부에 한쌍의 홀더(3)가 각각 설치되고, 상기 홀더(3)의 하부에 연장된 체결부(4)가 외측으로 30°정도 경사지게 절곡형성되며, 상기 홀더(3)의 체결부(4) 내측에 블레이드(5)가 각각 삽입되어 보울트(6)로 체결고정됨으로써, 상기 홀더(3)의 체결부(4)와 마찬가지로 상기 블레이드(5)도 외측으로 30°정도 경사지게 설치되는 한편, 상기 블레이드(5)의 하부 선단쪽 표면에 티타늄(T)이 이온 플레이팅에 의해 도금되어, 티타늄(T)이 도금된 블레이드(5) 선단이 상기 솔더크림에 접촉될 수 있는 구조로 됨에 따라, 블레이드가 경사지게 설치됨으로써 회로기판 보드에 도포되는 솔더크림을 보다 균일하게 도포시킴으로써 양질의 회로기판을 생산하는데 도움을 주고, 상기 블레이드 선단에 티타늄을 도금함으로써 블레이드 자체의 강성을 증대시킴으로써 그 수명을 오래가게 하며, 또한 블레이드에 접촉되는 솔더크림의 변형을 방지하여 회로기판 보드를 보호하고, 이에 따라 고품질의 회로기판을 생산함과 더불어 회로기판 제조의 불량이 현저히 억제됨으로써 공정상의 제반 비용을 절감시켜 생산성 향상에 이바지할 수 있는 것이다.
Patent KR-20000043676-A (KR)
Title: Resin composition for acrylate-based paint
Inventor: PARK YEONG HUI
IPC: C09D133/06
Filed: 1998-12-29
Abstract: PURPOSE: A resin composition prepared by copolymerizing a resin using a phosphoric acid-containing monomer is provided which improves the water resistance of a resin and the stability of a film and elevates the graphitization rate of a resin. CONSTITUTION: A resin composition comprises 10 to 30% by weight of hydroxyethylmethacrylate phosphate or hydroxyethylacrylate phosphate, a styrene monomer, and the balance of an acrylate resin. For an example, a mixture of 20% by weight of hydroxyethylmethacrylate phosphate, 15% by weight of a styrene monomer, 35% by weight of methylmethacrylate, and 30% by weight of butylacrylate are reacted with 1.5% by weight of azobisbutyronitrile based on the weight of the mixture and butyl alcohol and toluene to give the acrylate resin, which has a graphitization rate of 15% by weight.
Patent KR-20000044267-A (KR)
Title: Method for processing command of optic transmit equipment
Inventor: KIM JUN SEOK
IPC: H04B10/50
Filed: 1998-12-30
Abstract: PURPOSE: A method for processing a command of an optic transmit equipment is provided not to has all of parsing sources for all shelf analyze a command to other shelf, and not to effect a shift of the command to any one of the shelf on other shelf. CONSTITUTION: A method for processing a command of an optic transmit equipment comprises the steps of: searching a shelf to processing a command according to shelf discrimination information included in the command, if an operator inputs the command in one shelf; processing by analyzing the command if the command is the shelf to be processed; and transmitting the command to a corresponded shelf, if not.
Patent KR-20000046926-A (KR)
Title: Ultra high voltage cable connection device
Inventor: BAEK SEUNG YEOP
IPC: H01R13/6581
Filed: 1998-12-31
Abstract: PURPOSE: An ultra high voltage cable connection device is provided to simplify assembly and to reduce the area between the dielectric materials in order to improve insulation. CONSTITUTION: An ultra high voltage cable connection device includes a conductive sleeve(3), a high voltage electrode(2), an epoxy member(14), a semiconductive rubber(15), and an oil cushion(16). The conductive sleeve(3) connects the conductor exposed at both ends of the ultra high voltage cable(12A,12B). The high voltage electrode(2) is fixed on the conductive sleeve. The epoxy member(14) is fixed between the high voltage electrode(2) and a central bronze pipe(5). The semiconductive rubber(15) is fixed on the epoxy member. The oil cushion(16) compensates the pressure between the ultra high voltage cable(12A,12B) and the epoxy member(14).
Patent KR-19990036368-A (KR)
IPC: C01B33/32
Filed: 1996-08-06
Abstract: The object of the invention is to produce spray-dried amorphous silicates and impregnate them with detergent and cleaning agent constituents which are liquid to waxy in conventional processing conditions, without substantially impairing pourability. This object is achieved in that: a) an aqueous preparation substantially containing as active substance an amorphous alkali silicate, having an M2O : SiO2 (M = alkali metal) molar composition of between 1:1.5 and 1:3.3, is spray-dried and subsequently; b) impregnated with an aqueous dispersion of washing and cleaning agent constituents, one constituent of this dispersion being an organic co-builder; and c) is optionally dried.
Patent KR-19990067428-A (KR)
Title: 탄성부를 포함하는 일회용 흡수 물품
IPC: A61F13/15
Filed: 1996-10-09
Abstract: 길이와 폭이 있는 일회용 흡수 물품을 개시한다.  상기 일회용 흡수 물품은 제1 및 제2의 허리부와 제1 및 제2의 길이 방향 가장자리부로 정의한다.  상기 일회용 흡수 물품은 백시트층, 톱시트층 및 이들 두 충 사이에 위치하는 흡수체를 그 구성으로 한다.  상기 물품은 탄성, 고온 용융성, 감압성 접착제로부터 만들어진 하나 이상의 탄성부, 제1 및 제2 부재를 포함하는데, 상기 제1 및 제2 부재는 상기 탄성, 고온 용융성, 감압성 접착제에 의하여 서로 접착된다.  상기 탄성, 고온 용융성, 감압성 접착제 및 이로써 만들어진 상기 탄성부는 하기하는 특징을 가진다:  a) 상기 일회용 흡수 물품을 사용하는 동안 상기 제1 및 제2 부재를 충분히 접착시키는 접착 결합력;  b) 50%이상의 신장도;  c) 90% 신장 상태에서 단위 폭 센티미터당 157.48(인치당 400)그램중 미만의 복원력;  d) 섭씨 176.67도(화씨 350도)에서 70,000 센티포아즈 미만의 점도;  및  e) 섭씨 54도에서 20% 미만의 냉류치.
Patent KR-19990071526-A (KR)
Title: 물 제거 장치
IPC: B01J20/18
Filed: 1996-11-20
Abstract: 본 발명은 튜브형 수단의 한쪽 단부가 지지 매트릭스로 형성되어 폐쇄 상태에 있으며, 이 단부에서 적어도 그 수단의 하부상에서 제올라이트 막이 결정화되어 있으며, 사용시에 실린더는 액체 혼합물과 접촉되도록 제올라이트 막과 함께 액체 혼합물내에 배치시켜 물이 막을 통해 실린더로 들어가게 하고, 임의로 실린더 내부에서 감압이 발생할 수 있도록 하는 것을 포함하여 액체 혼합물로부터 물을 제거하는 장치에 관한 것이다.
Patent KR-20000010664-A (KR)
Title: High strength deep drawing steel developed by reaction with ammonia
Inventor: LALLY J SCOTT
IPC: H01M4/505
Filed: 1997-05-16
Abstract: PURPOSE: A method for preparing a sheet of deep drawing quality special killed-fully stabilized type steel of uniform enhanced strength and good formability and weldability is provided. CONSTITUTION: The method comprises providing an essentially unalloyed interstitial free carbon steel melt having C 0.001-0.01%, Mn 0.15-0.50%, Si 0.005-0.03%, AL 0.02-0.06%, S 0.002-0.015%, N 0.001-0.01%, O 0.001-0.01% and Fe balance; adding to the steel melt a strengthening element selected from Ti, Nb, V and mixtures thereof in total amount from about 0.01-0.3 free atomic percent available strengthening element uncombined with other elements; casting and hot rolling or hot rolling followed by cold rolling the steel; coiling the rolled sheet; annealing the rolled sheet at about 1275-1350 °F; treating the annealed sheet in an open coil annealing furnace in an isothermal step at a nitriding temperature about 800-1250 °F with a nitriding gas to nitride the steel through at least a portion of the sheet thickness; recirculating the nitriding gas; controlling the strengthening of the steel sheet as a function of steel composition, the nitriding gas composition, nitriding time, nitriding temperature, thickness of the steel sheet and depth of strengthening desired to provide a steel sheet having an 0.2% off-set yield strength after temper rolling of at least about 45 ksi and a r value in excess of about 1.8 for the cold rolled sheet.
Patent KR-20000016053-A (KR)
Title: Cleaning device and cleaning method
Inventor: SARASHINA EIKO
IPC: B41F35/00
Filed: 1997-05-26
Abstract: PURPOSE: A cleaning device of a screen mask is provided to eliminate the cream brazing remained inside of a mouth unit of a screen mask as well as to print and paint a printing material on a printed face through a screen mask. CONSTITUTION: A cleaning device for removing a remained printing material from a screen mask used in a process of printing a screen is composed of:an absorbing piece for absorbing a remained printing material from a screen mask; a control piece of flow variation for controlling the absorbed flow of the absorbing piece to change it; and a reciprocating piece for reciprocating the absorbing piece along the screen mask.
Patent KR-20000050309-A (KR)
Inventor: JEONG HUI TAEK
IPC: G11C16/06
Filed: 1999-01-05
Abstract: PURPOSE: A flash memory device having improved program and reading operation speed is provided to improve a program and a reading operation speed by reducing a parasitic capacitance generated between a high voltage generator and a line decoder. CONSTITUTION: A line decoder(400) includes a plurality of odd line decoders and a plurality of even line decoders connected each selector of a memory cell array. A high voltage generator(800) has a program voltage generator(810), a switch(820) and a reading voltage generator(830). The program voltage generator(810) generates a program voltage(Vpp1) for programming memory cells of a memory cell array during a program operation. The reading voltage generator(830) generates a reading voltage(Vpp2) for reading data stored in memory cells of the memory cell array during a reading operation. The switch(820) transmits the program voltage(Vpp1) from the program voltage generator(810) to a word line driving circuit(900) during the program operation and prevents that the reading voltage(Vpp2) from the reading voltage generator(830) is short with the program voltage(Vpp1) from the program voltage generator(810) during the reading operation. The word line driving circuit (900) has a plurality of word line drivers connected to each line decoders.