baber/WOPTO huggingface dataset:
Patent KR-20010054418-A (KR)
Inventor: KIM TAEK YEONG
IPC: H05K7/20
Filed: 1999-12-06
Abstract: PURPOSE: A thermal diffusion device of a radiator for telecommunication equipment is provided to be capable of maximizing the cooling efficiency of waste heat radiated from the telecommunication equipment under the state that the volume and weight of the telecommunication equipment are minimized. CONSTITUTION: The thermal diffusion device(10) forming a space by upper and lower housings(11,13) coupled to each other is attached on one side of the radiator consisting of a plurality of cooling separating plates. A wick(12) having working fluid is mounted within the space of the thermal diffusion device(10). The working fluid is vaporized by being contacted with waste heat transferred from the telecommunication equipment as well as is liquified by relative low temperature to transfer heat.
Patent KR-20010054834-A (KR)
Inventor: CHO YU HUI
IPC: H04L12/24
Filed: 1999-12-08
Abstract: PURPOSE: An apparatus and a method for loading telephone network source traffic data into a database is provided to rapidly and exactly load a DB table with source traffic data, as a preceding work to construct a telephone network source traffic information data warehouse. CONSTITUTION: A term standardization unit(101) standardizes various terms for source traffic data. An input unit(102) receives a file name for loading among the file names standardized by the term standardization unit(101). A file name parsing and processing classification unit(103) executes parsing for the inputted file name to detect an input error. A data double loading confirmation unit(104) confirms whether the data equivalent to the verified file name exist in a database. A table generation unit(105) generates a standard table for a file in the database, in case that the relevant data are the first data. A data loading and log generation unit(106) loads actual data into the generated database table and generates a log file as the result. A file compression unit(107) compresses the file if the data are loaded completely. A basic information unit(109) has basic information for the standard table. An optimization processing unit(110) adjusts an SQL(Structured Query Language) sentence according to basic information and optimizes the table generation operations of the table generation unit(105). An error processing unit(108) processes an error generated from each unit.
Patent KR-20000012558-A (KR)
Inventor: SONG JI YONG
IPC: H04M19/00
Filed: 1999-12-11
Abstract: PURPOSE: A battery saving device for an illumination sensing differently regulates an intensity of light according to an environment condition, and thus increases a use time of a battery. CONSTITUTION: A battery saving device senses an illumination of environment using a telephone in a communication standby state. If the sensed illumination is higher than a predetermined illumination, LCD is not turned on. If the sensed illumination is lower than the stored illumination, the power as needed to the sensed illumination is provided, so that an illumination is sequentially regulated, thereby reducing a power of the batter used to turn on LCD.
Patent KR-20010056162-A (KR)
Inventor: EOM JEONG IK
IPC: B22D11/10
Filed: 1999-12-14
Abstract: PURPOSE: An electromagnetic stirring method is provided which reduces segregation center by stirring the molten steel in both directions using an electromagnetic stirring apparatus instead of the method of stirring molten steel in one direction. CONSTITUTION: In a method for continuous casting a steel billet by applying electromagnetic stirring to non-solidified molten steel of a steel billet using an electromagnetic stirring apparatus of the lower part of the mold as continuously supplying martensitic stainless molten steel received in a Tundish to a mold, the electromagnetic stirring method in the continuous casting for reducing segregation center of martensitic stainless steel comprises the process of repetitiously electromagnetic stirring the molten steel to both sides using the electromagnetic stirring apparatus, wherein the electromagnetic stirring further comprises the steps of electromagnetic stirring the molten steel in one direction for 8 to 20 seconds; stopping the stirring for less than 2 seconds; electromagnetic stirring again the molten steel in an opposite direction for 8 to 20 seconds, thereby forming a vortex in an opposite direction; and repeating the above steps.
Patent KR-20010064886-A (KR)
Inventor: LEE JE HEUN
IPC: C08L25/08
Filed: 1999-12-20
Abstract: PURPOSE: Provided is thermoplastic resin composition with superior non-adhesion property which uses rubber component in limited content and vinyl heat-resistant copolymer so that it improves non-adhesion property. CONSTITUTION: The thermoplastic resin composition with superior non-adhesion property comprises the components of: 10-20wt% of graft acrylonitrile-butadiene-styrene copolymer wherein 40-60wt% of latex and 40-60wt% of graft monomer compound are copolymerized; 10-60wt% of vinyl copolymer wherein 60-80wt% of vinyl aliphatic monomer or its compound and 20-40wt% of one material from methylmethacrylate or acrylonitrile and its compound are copolymerized; 10-15wt% vinyl heat-resistant copolymer wherein 40-90wt% of vinyl aliphatic monomer or its compound and 10-60wt% of one material from alpha-methylstyrene or N-phenylmaleimide and its compound are copolymerized; 10-20wt% of fire retardant; and 2-50wt% of inorganic reinforced agent.
Patent KR-20010057828-A (KR)
Inventor: CHOI DONG GWON
IPC: H01J29/02
Filed: 1999-12-23
Abstract: PURPOSE: A shadow mask supporting apparatus for magnetic force vacuum deposition is provided to get an accurate circuit pattern by using magnetic force to support closely shadow mask at glass. CONSTITUTION: An upper plate(11) and a support plate(15) faces each other and is separated a designated interval. A several magnetic force generating part(53), which is wound with a coil(49), is inserted between the upper plate(11) and the support plate(15). The upper plate(11) and the support plate(15) have a same plane shape, and a support member(25) supplies inside space to the edge part. The support member(25) has a shape of the edge of the upper plate(11) or the support plate(15), and is formed vertically with a several bolt hole(31) and an installation opening(27). The support member(25) has a designated height, and combines the upper plate(11) and the support(15) to be separated with parallel and a designate interval, and then supports a magnetic force generator(53) strongly.
Patent KR-20010058114-A (KR)
Title: Jig for cleaning flux of semiconductor package
Inventor: KO JAE WON
IPC: H01L21/68
Filed: 1999-12-24
Abstract: PURPOSE: A jig for cleaning flux of a semiconductor package is provided to eliminate the flux by a revolution method having an excellent cleaning effect, by preventing the semiconductor package from being detached from a boat even if a cleaning process is performed while the boat is revolved. CONSTITUTION: A boat(1) has a plurality of openings(2) where solder ball mount surfaces of a plurality of semiconductor packages(3) are exposed. A fixing block(5) for fixing the semiconductor package is formed in the corner portion of each opening. The boat is inserted into a flux cleaning magazine to which cleaning liquid is sprayed, and is revolved together with the magazine. A net(4) is placed on the boat to prevent the semiconductor package from being detached from the boat by centrifugal force when the boat is revolved.
Patent KR-20010063937-A (KR)
Inventor: SEO GYEONG SU
IPC: C09K11/08
Filed: 1999-12-24
Abstract: PURPOSE: Provided are oxidized red fluorescent materials for fluorescent display which show high luminescent effect and high purity color at low voltage, due to less desulfurization and aging even under long time electron bombardment. The problems in the field emission display where these materials are used, the distance between cathode and anode plate is short and they are packaged in vacuum. Therefore, low voltage not higher than 5 kV is used because of the discharge problem and accordingly luminescence and color purity is low. CONSTITUTION: The fluorescent materials of the invention are shown by chemical formula 1 and 2 (formula 1 is SrTi(1-x-y)MxNyO3:zPr¬3+ and formula 2 is Sr(1-x)MxTi(1-y)NyO3:zPr¬3+) where M is alkali metal atoms of valence 1, N is metal atom with valence 3, 0=< x=<0.3, 0=<y=<0.1, 0=<z=<0.1. The alkali metal atoms with valence 1 is Li2CO3 and metal atom with valence 3 is Ga2O3. The preparation process is introducing SrCO3, TiO2, ZnO, Ga2O3 and aqueous solution of PrCl3(H2O)7 and alcohol, according to the constituent ratio of chemical formula 1, into a pestle, mixing uniformly and drying. The product is again calcinated in the aluminum vessel at 1000-1300deg.C for not more than 10 hours.
Patent KR-20010061266-A (KR)
Title: Method for manufacturing semiconductor device
Inventor: PARK SANG IL
IPC: H01L21/283
Filed: 1999-12-28
Abstract: PURPOSE: A method for manufacturing a semiconductor device is to provide a polysilicon layer for forming a plug in a peripheral circuit region, thereby preventing a damage of a substrate in etching of a metal contact and simplifying manufacturing process. CONSTITUTION: The semiconductor device is defined into a cell region and a peripheral circuit region. On a silicon substrate is formed a word line. An insulating layer for sidewall is formed on the word line and entirely etched to form a sidewall spacer(37) in contact with the sidewall of the word line. An undoped polysilicon layer(38) is formed on the entire structure. A photoresist is deposited on the resultant layer and then subject to an exposure and a development to form a pattern for the first conductive impurity implantation and to implant the same. Again, a photoresist is deposited on the resultant layer and then subject to an exposure and a development to form a pattern for the second conductive impurity implantation and to implant the same. Further, a photoresist is deposited on the resultant layer and then subject to an exposure and a development to form a pattern for plugs that are to connect a bit line(46) and a storage node(47), and are to connect metal interconnect(48).
Patent KR-20010065709-A (KR)
Inventor: KIM TAE SEONG
IPC: C08G59/06
Filed: 1999-12-30
Abstract: PURPOSE: A bonding agent and a bonding film for semiconductor package are provided to improve the reliability of a semiconductor device by lowering a characteristic for absorbing moisture. CONSTITUTION: A denatured epoxy is mixed with a normal epoxy according to various mixing ratios. A bonding agent and a bonding film for semiconductor package are formed by adding a poly(acrylonitrile-co-butadiene), a poly(acrylonitrile-co-butadiene-co-styrene), a poly(acrylonitrile-co-butadiene-co-methy methacrylate), a poly(n-butyl acrylate), a rubber such as a modified natural rubber, a modified acrylate rubber, and a polyurethane rubber to the mixture.
Patent KR-20000035793-A (KR)
Title: Robotic co2 tire mold cleaning
Inventor: ALMODOVAR HUGO ADALBERTO
IPC: B24C1/00
Filed: 1996-08-22
Abstract: PURPOSE: A robotic co2 tire mold cleaning is provided for the art of methods and apparatuses for cleaning tire molds and more specifically to methods and apparatuses for cleaning tire molds using pellets of frozen carbon dioxide, hereafter referred to as CO2. CONSTITUTION: A method and apparatus for cleaning molds, particularly tire molds (16) using pellets of a frozen gas and a robotic ally controlled apparatus are disclosed. A heated mold (16) is conveyed into an insulated and sound-proof enclosure (34) where a robot arm with a nozzle (52) mounted on the robot arm directs frozen CO2 pellets against the mold surface to be cleaned. The mold (16) is rotated on a rotary table (40) to clean the entire mold surface. The mold (16) is then removed from the enclosure (34) on a conveyor (82). The preferred frozen gas is CO2 because it is non-abrasive to the tire mold surfaces and also cleans the micro vents of the tire mold (16).
Patent KR-20000062413-A (KR)
IPC: C03C10/16
Filed: 1997-12-15
Abstract: 본 발명은 산화물 성분, 희토류 성분, 할라이드 성분 및 실질적으로 순수한 희토류-할라이드 (예를 들면, REF 3 ) 결정 성분을 포함하는 신규한 투명 유리 세라믹 조성물에 관한 것이다.    상기 신규한 물질의 필수 조성 (각각 몰% 단위)은 다음과 같다: SiO 2 (0-80); GeO 2 (0-80); Na 2 O (0-25); K 2 O (0-25); Rb 2 O (0-25); Cs 2 O (0-25); Al 2 O 3 (0-40); Ga 2 O 3 (0-40); RE 2 F 6 (0 〈 RE 2 F 6 〈 18); PbO (0-15); RO (0-25); ZnO (0-10); ZrO 2 (0-2); TiO 2 (0-2); Nb 2 O 5 (0-10); Ta 2 O 5 (0-10); P 2 O 5 (0-5); B 2 O 3 (0-15); As 2 O 3 (0-10); Sb 2 O 3 (0-10); 및 XCl n (0-5), 여기서, RO는 BaO, CaO, SnO 및 MgO 중에서 적어도 하나이며; XCl n 는 NaCl, LaCl 3 , AlCl 3 , 또는 NH 4 Cl과 같은 염소 함유 성분이며; (SiO 2 + GeO 2 ) (40-80); (Na 2 O + K 2 O + Rb 2 O + Cs 2 O) (2-25); 및 (Al 2 O 3 + Ga 2 O 3 ) (10-40)이고, 여기서, RE는 Y 3+ , La 3+ , Ce 3+ , Pr 3+ , Nd 3+ , Sm 3+ , Eu 3+ , Gd 3+ , Tb 3+ , Dy 3+ , Ho 3+ , Er 3+ , Tm 3+ , Yb 3+ 및 Lu 3+ 중에서 하나 또는 그 이상의 단독 또는 혼합물이다.    본 발명의 실시에에서, RE 2 F 6 의 양은 다음 식으로 산출된다: RE 2 F 6 = (K)(R/r) 3 (Al 2 O 3 + Ga 2 O 3 - R 2 O)/2, 여기서, R은 Na, K, Rb 및 Cs 중의 하나이고, 0.7≤K≤1.2이며, R은 La 3+ 의 반지름이고, r은 RE 3+ 의 반지름이다.    상기 신규한 물질을 제조하는 방법도 또한 기술되어 있으며, 이는 통상적인 용융법에 의한 희토류 이온을 함유하는 옥시플루오라이드 유리를 제조하는 단계 및 상기 유리를 가열 처리 (세라밍)하여, 많은 양의 희토류 이온을 함유한 플루오라이드 미세 결정을 바람직하게 침전시키는 단계를 포함한다.
Patent KR-20000075608-A (KR)
IPC: A63F13/10
Filed: 1998-12-07
Abstract: 시스템 사용자의 카메라 기초 제스쳐 입력을 이용하여 가상 현실 환경을 통한 3 차원 내비게이션을 허용하는 시스템 및 방법이 공개된다.  상기 시스템은 컴퓨터 판독 가능 메모리, 시스템 사용자의 제스쳐 및 상기 시스템 사용자를 둘러싸는 대화 영역을 나타내는 비디오 신호를 발생하는 비디오 카메라, 및 비디오 이미지 디스플레이를 구비하고 있다.  상기 비디오 이미지 디스플레이는 상기 시스템 사용자의 앞에 위치되어 있다.  상기 시스템은 또한 시스템 사용자의 몸의 3 차원 위치 및 주요 몸 부분을 결정하기 위해, 상기 컴퓨터 판독 가능 메모리에 저장된 프로그램에 따라 비디오 신호를 처리하는 마이크로프로세서를 구비하고 있다.  상기 마이크로프로세서는 상기 시스템 사용자의 3 차원 이미지 및 상기 시스템 사용자의 몸 및 주요 몸 부분의 3 차원 위치를 기초로 비디오 이미지 디스플레이 상에 시스템 사용자 및 대화 영역의 3 차원 이미지를 구성한다.  상기 비디오 이미지 디스플레이는 가상 현실 환경 냉에 3 차원 그래픽 피사체를 디스플레이하며, 상기 시스템 사용자에 의한 이동은, 상기 시스템 사용자가 가상 현실 환경 전반에 걸쳐 이동하는 것으로 나타날 수 있도록 상기 비디오 이미지 디스플레이 상에 디스플레이된 3 차원 피사체의 외견상의 이동을 허용한다.
Patent KR-20000075787-A (KR)
Title: 기포 승강기를 구비한 용기의 내용물 교반 장치
IPC: B01F33/40
Filed: 1998-02-24
Abstract: 본 발명은 액체를 유인하기 위한 공기 분기 지점(5)과 공기-액체 혼합물을 배출하기 위한 상부 개구부(4) 사이의 중간에 오리피스(7)를 구비하는 기포 승강기에 관한 것이다. 용기가 약간 채워지고 그것의 내용물이 상부로 유인될 수 없을때 혼합물은 오리피스(7)에 의해서 배출될 수 있거나, 또는 반대로 부가적인 공기의 흡입이 제공될 수 있다. 기포 승강기는 일반적으로 용기의 액체 내용물을 교반하여 균질화시키는데 사용된다.
Patent KR-20010012613-A (KR)
Title: Therapeutic Agent for Cachexia
IPC: C12P21/08
Filed: 1998-05-13
Abstract: A cachexia remedy containing an active ingredient comprising a substance inhibiting the binding of a parathyroid hormone-related peptide and a receptor thereof. Examples of the inhibiting substance include antagonists against parathyroid hormone-related peptide receptors, parathyroid hormone-related peptide antibodies, antibody fragments, and modified antibodies.
Patent KR-20010012765-A (KR)
Title: 손잡이 부착 플라스틱 보틀
IPC: B65D51/24
Filed: 1999-03-19
Abstract: 손잡이를 구비한 압궤가능한 플라스틱 보틀에 있어서, 손잡이에 굴곡변형부를 형성하고, 손잡이를 굴곡가능하게 한다. 상기 손잡이의 굴곡변형부는 손잡이의 긴쪽방향의 중앙부분에 형성된 절곡부으로 하는 것이 가능하다. 또한 손잡이와 통부벽면과의 사이에 절곡 리브를 형성하는 것이 가능하다. 보틀의 통부에 절곡 리브를 형성하고 통부를 압궤변형가능하게 하여도 좋다.
Patent KR-20010013421-A (KR)
Inventor: IMORI TORU
IPC: C10M129/58
Filed: 1999-04-20
Abstract: Molybdenum soap-containing complex metal soaps having uniform qualities which can be provided at a high yield. These molybdenum soap-containing metal soaps are produced by reacting a fatty acid in excess with a molybdenum compound to synthesize a molybdenum soap, then adding a metal compound other than molybdenum compound and reacting the same with the excessive fatty acid; or by reacting a molybdenum compound with a fatty acid in the presence of a fatty acid and a metal compound having a softening point of 120 °C or below and being capable of forming a metal soap.
Patent KR-20010020530-A (KR)
Title: 반사법 탐사 선박
IPC: B63B27/36
Filed: 1998-06-23
Abstract: 배수량 단선체선을 지니는 반사법 탐사 선박(10)은, 그 선박의 중심선의 양측상에서, 그 나비가 선체중앙(16)으로부터 선박의 선미(18)를 향해 점진적으로 증가하는 스트리머 갑판(20)을 구비한다. 선미에서 37.5미터에 이르는, 스트리머 갑판(20)의 이러한 증가된 나비는, 16개의 스트리머(28)를 포함하는 매우 폭넓은 스트리머 어레이의 배치 및 예인을 용이하게 한다. 그것은 또한 스트리머 갑판의 후방의 나비 전반에 걸쳐, 각각의 스트리머에 대하여 하나씩, 신규한 스트리머 처리 시스템(22, 30, 32)의 설치를 위한 공간을 제공한다.
Patent KR-20010068315-A (KR)
Title: Method for manufacturing capacitor
Inventor: NAM GAP JIN
IPC: H01L27/105
Filed: 2000-01-04
Abstract: PURPOSE: A method for manufacturing a capacitor is provided to form a resistance layer of a peripheral circuit region by using a material for upper electrode of a capacitor. CONSTITUTION: A lower electrode(15) is formed on an insulating layer(10). The lower electrode(15) is connected with an active region of a semiconductor substrate(5). A dielectric layer(20) is formed on an upper portion of the lower electrode(15). A conductive layer for upper electrode is deposited thereon. The conductive layer for upper electrode is patterned. A material layer(30a) is deposited on the structure. A material layer pattern is formed on a cell array region and a peripheral circuit region by patterning the material layer(30a). The material layer pattern is used as an upper electrode(25) and a resistance layer(30b).
Patent KR-20010073620-A (KR)
Title: Cephalosporin substituted with pyrazolopyridine derivatives and preparation thereof
Inventor: JANG GWAN YEONG
IPC: C07D501/16
Filed: 2000-01-19
Abstract: PURPOSE: A pyrazolopyridine substituted cephalosporin compound is provided, which have the wide antimicrobial activity for gram positive and gram negative bacteria. And a producing method thereof is also provided. CONSTITUTION: The pyrazolopyridine substituted cephalosporin compound is represented by formula (1), in which R1 is hydrogen, C1 to C3 alkyl, C1 to C3 alkyl containing hydroxy, C1 to C3 alkyl containing amine; and R2 is hydrogen, amino, amino protected by amine protecting groups, carboxy or its inorganic salts, carbarmoyl, C1 to C3 alkyl substituted carbarmoyl, C1 to C3 alkyl containing hydroxy, and C1 to C3 alkyl esterified carboxy. The method for producing the pyrazolopyridine substituted cephalosporin compounds comprises the steps of: reacting the compounds of formula (2) and (3); and deprotecting R3 and R4, in which R3 is amine protecting groups, R4 is carboxylic acid protecting groups; and Y is halogen or acetoxy.
Patent KR-20010081144-A (KR)
Title: System and method for managing individual schedule
Inventor: KIM HANG SIK
IPC: G06F17/40
Filed: 2000-01-25
Abstract: PURPOSE: A system and method for managing a personal schedule is provided to increase the convenience of a user by directly enabling the user receiving a personal schedule, additional information and services through a wireless phone set without going through a complicated procedure. CONSTITUTION: A personal schedule management system(10) is equipped with a server(12), a client PC(14) which is equipped with an Internet connection unit(32) and an input unit(34) capable of inputting the personal schedule to the personal schedule database(22) of the server(12), an Internet network(16) which connects the server(12) to the client PC(14) and a wireless phone set(18). The server(12) is equipped with an Internet connection device(20), a personal schedule database(22) which stores personal schedules which members input, an additional search unit(24) which searches additional information related to personal information of the members stored in the personal schedule database(22), a booking unit(30) which books a ticket.
Patent KR-20010083493-A (KR)
Title: Connecting optical fiber and its application to a fiber-optic optical waveguide
Inventor: CHOI SANG SU
IPC: G02B6/10
Filed: 2000-02-15
Abstract: PURPOSE: An optical fiber for use in a junction and an optical waveguide using the same are provided to minimize a loss due to a delay of arriving time among modes by avoid a refractive index sinking of a multiple mode. CONSTITUTION: A single-mode optical fiber(400), an optical fiber for use in a junction(410), and a multiple mode optical fiber(420) are arranged in a line. Diameters of a core(414) and cladding(412) of the optical fiber(410) for use in a junction are getting less and less, so it satisfies a condition of the single mode. A core(404) and a cladding(402) of the single-mode optical fiber(400) is controlled so as to be suitable for the end part of the optical fiber(410) for use in a junction and is connected thereto. The core(414) of the optical fiber(410) for use in a junction includes a cone-type hollow part toward the axis direction. In order to transmit a maximum power, when the optical fiber(410) for use in a junction is connected to the multiple mode optical fiber(420), the size of the core(414) and cladding(412) is controlled.
Patent KR-20010081573-A (KR)
Title: Refrigerator and Control Method Thereof
Inventor: LEE HUI SU
IPC: F25D11/00
Filed: 2000-02-16
Abstract: PURPOSE: A refrigerator and method for controlling operation of refrigerator is provided, in which current consumers are prevented from being shutdown upon even upon occurrence of abnormality of temperature sensor, to thereby prevent spoilage of foodstuff stored in the cooling chamber and improve cooling efficiency. CONSTITUTION: A refrigerator comprises a main body having a freezing compartment and a refrigerating compartment; first and second temperature sensors(19,21) for sensing temperatures of the freezing compartment and the refrigerating compartment; a plurality of current consumers(11,15,17,25,27) for cooling the freezing compartment and the refrigerating compartment; a detection unit for detecting operation time of current consumers; and a control unit(40) for driving current consumers in accordance with the operation time detected by the detection unit, upon occurrence of abnormality of temperature sensors. The detection unit includes a data computing unit(29) for sampling the operation time of the current consumers and computing an average operation time; and a data storage unit(35) for storing the average operation time computed by the data computing unit.
Patent KR-20010086851-A (KR)
Inventor: LEE MAN JUNG
IPC: G11C29/00
Filed: 2000-03-03
Abstract: PURPOSE: A semiconductor memory device is provided, where a main cell block and a spare cell block in a selected memory cell array block can be tested at the same time when performing a multi row active disturb(MRAD) test in a pre-laser state and in a package state. CONSTITUTION: The device comprises a redundancy enable signal generation circuit(10), a multi row active disturb(MRAD) test control signal generation circuit(12) and a spare word line enable signal generation circuit(14). Decoded addresses(DRA234,56,78) are one of signals generated by decoding addresses(RA234,56,78), and decoded addresses(DRA910,1112) are one of signals generated by decoding addresses(RA910,1112). The redundancy enable signal generation circuit generates a redundancy enable signal(PRENi<0>) in response to decoded addresses(DRA234,56,78) to select a word line group of a main cell block and according to decoded addresses(DRA910,1112) to select each memory cell array block. But, if a control signal(MRADMODEB) of a low level is generated, the redundancy enable signal is disabled to a low level. The MRAD test control signal generation circuit generates control signals(MRADMODE,MRADMODEB) of a high level and a low level while performing a multi row active disturb test operation. The spare word line enable signal generation circuit generates a spare word line enable signal(PSWEi<0>) in response to the control signal(MRADMODE) of a high level and decoded addresses(DRA234,56,78,DRA910,1112) while performing the multi row active disturb test operation.