baber/WOPTO huggingface dataset:
Patent KR-20000031379-A (KR)
Title: Device for producing semiconductor package
Inventor: YUN JU HUN
IPC: H01L23/28
Filed: 1998-11-05
Abstract: PURPOSE: A device for producing a semiconductor package is provided to bump a solder ball for a row unit in a semiconductor chip on a wafer by adopting the bumping block of a structure that it is arranged in parallel by row and to promote efficiency of bumping operation by adopting a method for selectively controlling the bumping block according to requirements. CONSTITUTION: A tool for bumping a solder ball is composed of a tool body(13) installed in a tool loading unit, a bumping block(16) holding the solder ball, a moving instrument(20) of plate for including a cylinder(17), and a pin plate922) protecting the bumping block. Herein, the tool body is formed in a square bar with a certain length for containing an upper part and a lower part having cylindrical tool connector(10) and a block installer(1). And the tool connector is the connected unit by using vacuum pressure generated in the tool loading unit while keeping sealing, and the block installer is a square groove for settling the bumping block. Herein, the bumping block holds the solder ball while being fixed in the block installer of the tool body in a bolt binding method.
Patent KR-19990014466-A (KR)
Title: 구명용 쿠션매트의 프레임 제작방법
Filed: 1998-11-12
Abstract: 본 발명은 높은 곳에서 뛰어내리는 사람을 받기 위해 소방대에서 사용하는 튜브로 연결구성되는 구명용 쿠션매트의 기본 골격을 구성하는 프레임의 제작방법에 관한 것으로, 종래 직물의 안팍에 합성수지로 코팅한 기밀성의 보강천으로 구성한 튜브형 구명용 쿠션매트의 프레임에 있어서, 
     상부테와 지주 하부테와 지주가 교차하는 부분에 다기관이 필연적으로 형성되는데 보강천으로 이를 구성하게 되므로서, 이 다기관을 구성함에 있어서는 보강천의 재단  재단부분의 내부 접합부에는 테이프부착, 외부이음부에는 합성수지코팅공정을 거쳐야하는 제작공정이 따라야 한다. 
     본 발명은 이와 같은 다기관(3개의 분기관)을 위와 같은 복잡한 공정없이 단섬유를 첨가시킨 PVC페이스트레진으로 침적성형(Deeping Mouiding)방법에 의하여 인장강도가 뛰어나고 탄성이 있으며, 연질인 3개의 분기관을 갖는 다기관을 일체로 성형하여 각 다기관에 튜브를 접착하여 구명용 쿠션매트의 프레임을 제작하는 방법에 관한것이다.
Patent KR-20000032256-A (KR)
Title: Device for locking of transfer stage for semiconductor equipment
Inventor: SEO KYEONG MYEONG
IPC: H01L21/68
Filed: 1998-11-13
Abstract: PURPOSE: A device for locking of a transfer stage is provided to separate the locking device to control each transfer stage T1 and T2. CONSTITUTION: A locking device of transfer stage contains a controller(300), a first stage locking unit(320) and a second stage locking device(340). The controller(300) detects a carrier locked state and a carrier free state of a first transfer stage(T1) and a second transfer stage(T2), and drives a driving motor of T1 lock(324) or a driving motor of T2 lock(344) to control a carrier of the first or the second transfer stages(T1,T2) in a lock or a free state. The first stage locking unit(320) locks the first transfer stage(T1) by replying a control signal received in the controller(300) or removes from the locked state, and fixes a left and a right locking units(322,324) by driving the driving motor of T1 lock(324) when the control signal is fed. The second stage locking unit(340) locks the second transfer stage(T2) by replying the control signal received from the controller(300) or removes from the locked state.
Patent KR-20000032823-A (KR)
Title: Electronic bankbook system and financial service method using electronic bankbook system
Inventor: SHONG JU SEOK
IPC: G06Q99/00
Filed: 1998-11-18
Abstract: PURPOSE: An electronic bankbook system and a financial service method using the electronic bankbook system are provided to more safely manage the personal financial information of a user and financial service by using a coding technique. CONSTITUTION: An electronic bankbook system includes an electronic bankbook client(101),and a server(106). The client(10) has a web browser(102), an SSL coding/decoding module(103), a browser linking module(104), and a data managing module(105). The server(106) has a cyber bank server(107). The web browser(102) receives a finance service request paper and Hyper text Markup Language HTML to which a field value is inserted from a user and the browser linking module(104), respectively. This browser(102) transmits the request paper and HTML to the SSL coding/decoding module(103).
Patent KR-20000033986-A (KR)
Title: Fluorine substituted polyarylene ether copolymer and polymer light element using the same
Inventor: LEE HYUNG JONG
IPC: C08G65/38
Filed: 1998-11-26
Abstract: PURPOSE: A fluorine substituted polyarylene ether-based polymer and a wave guide-type polymer light element used the same as a core layer are provided which have a low light advance loss and improved chemical resistance and thermal stability. CONSTITUTION: A fluorine substituted polyarylene ether-based polymer containing an amine group in its side chain and a wave guide-type polymer light element used the same as a core layer are provided, wherein the polymer is prepared by thermal poly condensing decaflurobiphenyl with aromatic diol with amine groups to give amine-containing polyarylene ether and subjecting to the introduction of halogen-containing aromatic anhydride to a side chain of the polymer by polymerization reaction. The polymer has a low light advance loss by eliminating the peculiar light absorption of a material according to a molecular vibration and is used for a light element core and a cladding material such as a thermal light switch, a beam separator, a polarization and wave length filter, and a thermal grid of wave guides.
Patent KR-20000038355-A (KR)
Title: Traditional refined rice wine using unrefined rice wine through modern processing
Inventor: SHIN KYOUNG SHIK
IPC: C12G3/02
Filed: 1998-12-07
Abstract: PURPOSE: Traditional refined rice wine can be produced by applying modern processing using unrefined rice wine, which has been kept at a distance because it has lots of by-product. CONSTITUTION: A traditional refined rice wine is produced by putting unrefined rice wine in cooling circular aluminum tank adiabatic covering stuff and cooling jacket; maturing and precipitating at 0-2°C for 7 days; transfusing 2/3 of fined wine out of matured and precipitated unrefined wine into the second circular aluminum tank adiabatic covering stuff and cooling jacket, and using the rest sediment 1/3 to make brewing vinegar; adding Pre-isomerized hop extract 0.6% and refined CO2 0.1%, and maturing for 7 days; filtering the matured refined wine with stainless circular Lauter tun. The manufactured wine can be sold in can or bottle or using pump at bar.
Patent KR-20000038687-A (KR)
Title: Apparatus for connecting/releasing missile with hard sphere
Inventor: NA MUN SU
IPC: F41F3/052
Filed: 1998-12-08
Abstract: PURPOSE: A connect/release system of a missile with a hard sphere is provided to prevent vibration of a canister caused by impact and to minimize errors by stabilizing the launching. CONSTITUTION: A missile mounts a working cylinder(30) and a piston(40), and a canister(20) includes a fixing cylinder(70), a combustion gas inflow/induction members(80,90) and a fixing member(60). The working cylinder is inserted into the fixing cylinder as well as a protrusion(12) is inserted into a hold member(62). A hard sphere is inserted into a groove(72), and the missile and the canister are held by the working cylinder, the piston, the hard sphere, the fixing member and the fixing cylinder.
Patent KR-20000038958-A (KR)
Title: Frequency synthesizing method of radio frequency unit of satellite mobile communication system
Inventor: KU DO IL
IPC: H04B7/185
Filed: 1998-12-10
Abstract: PURPOSE: A frequency synthesizing method of a radio frequency unit of a satellite mobile communication system is provided to ensure a faster lock time in selecting a frequency. CONSTITUTION: A receiving intermediate frequency generated according to a receiving radio frequency and receiving radio local oscillation frequency that are being received is processed to be small in a predetermined frequency range and a base band signal is accordingly generated. A transmission intermediate frequency is processed to be larger in a proper frequency range to thereby generate a transmission radio frequency in conformity to the pre-set satellite communication system standard.
Patent KR-20000039777-A (KR)
Title: Reflection layer of reflection type liquid crystal display device
Inventor: KIM YONG BEOM
IPC: G02F1/1335
Filed: 1998-12-16
Abstract: PURPOSE: A reflection layer of reflection type liquid crystal display device is provided to equalize light brightness over the whole reflection layer regardless of the location of pixels. CONSTITUTION: A reflection layer of reflection type liquid crystal display device includes a substrate(21), a prominence/depression layer(22), and a reflection layer(23). The prominence/depression layer(22) includes prominence and depression parts and is formed on the substrate(21). The pattern of prominence and depression parts is changed in a rule along with a certain direction parallel with the substrate. The reflection layer(23) includes a reflection membrane formed along with the surface of the prominence/depression layer(22).
Patent KR-20000044495-A (KR)
Title: Cord holder apparatus of handset
Inventor: LEE DAE UP
IPC: H04B1/38
Filed: 1998-12-30
Abstract: PURPOSE: A cord holder apparatus of a handset is provided to prevent cord holder loss and cord holder burning and to prevent malfunctioning phenomena caused by cord disconnection and static electricity, by preventing a cord holder from being separated from the handset, caused by an external shock or when a cord is stretched. CONSTITUTION: A cord holder apparatus of a wire telephone handset comprises a low cover(20), a cord holder(40), and an upper cover(30). The low cover comprises a low holder groove(22), guide ribs(24), and rib grooves(26). The low holder groove is formed on one end of the low cover. The guide ribs are extensively formed to upper directions in both sides of a base plane of the low cover. The rib grooves are formed on upper sides of the guide ribs. The cord holder has holder axes attached on the rib grooves. The holder axes are projected on both ends of an upper side of the cord holder. The upper cover comprises an upper holder groove(34) and axis grooves(36). The upper holder groove is formed on one end of the upper cover. The axis grooves are formed on a lower side of both sides of the upper holder groove.
Patent KR-20000045650-A (KR)
Title: Method for evaluating material deviation of tin plate for can
Inventor: NAM JAE BOK
IPC: G01N1/28
Filed: 1998-12-30
Abstract: PURPOSE: A method for evaluating a material deviation of a tin plate for a can is provided to precisely evaluate whether a tin plate is proper or improper for a can procedure before forwarding the tin plate from a rolling factory or providing the tin plate to the can procedure, thereby preventing generation of inferior products, stopping of the procedure or wasting of materials. CONSTITUTION: A method for evaluating a material deviation of a tin plate for a can includes the steps of forming a plurality of blanking(11) in a longitudinal direction while maintaining an interval of 1mm from an edge in a width direction of the tin plate, forming a cup(12) by molding the blanked tin plate with a drawing ratio of 1.6, measuring heights of a dale part and a peak part of the molded cup, computing an ear generation ratio(=((height of the peak part-height of the dale part)/height of the dale part)X100), and evaluating a workpiece, of which ear generation ratio is more than 2%, to be improper.
Patent KR-20000046876-A (KR)
Title: Structure for preventing introduction of reverse refrigerant of hermetic rotary type compressor
Inventor: JUNG CHAE SUK
IPC: F04C29/00
Filed: 1998-12-31
Abstract: PURPOSE: A structure for preventing introduction of reverse refrigerant of a hermetic rotary type compressor is provided to omit an element for preventing introduction of liquid refrigerant to be mounted on an accumulator, thereby reducing manufacturing cost and improving productivity by reducing assembling time. CONSTITUTION: In a structure for preventing introduction of reverse refrigerant of a hermetic rotary type compressor, a sealing part(5) is formed in the shape of circular corn on a top part of a refrigerant introduction tube(4) for preventing introduction of liquid refrigerant in an accumulator(3) directly to a sealing container(1) and refrigerant introduction tube is mounted in the accumulator mounted at a side of a sealing container and formed with a refrigerant introduction hole(6) at a lower part of the sealing part.
Patent KR-19990063915-A (KR)
IPC: D21H21/10
Filed: 1996-12-24
Abstract: There is provided a papermaking method which comprises the steps of adding to pulp in a papermaking step an ionic water-soluble polymer produced by a polymerization method for obtaining a dispersion of fine polymer particles by carrying out polymerization under agitation in an aqueous salt solution capable of dissolving monomers but not the produced polymer in the presence of a dispersant composed of a polymer electrolyte soluble in the aqueous salt solution and then adding an anionic additive selected from the group consisting of anionic colloidal silica, anionic (co)polymer, bentonite and a mixture thereof so as to improve retention and/or drainage property. The present invention makes it possible to greatly improve the retention and drainage property of paper stuff and fillers in the papermaking process and thereby enhance quality and productivity.
Patent KR-19990077033-A (KR)
Title: Cns 활성을 갖는 4,5-디히드로나프트[1,2-c]이속사졸 및그의 유도체
IPC: A61P25/18
Filed: 1996-12-12
Abstract: 화학식 (I)의 4,5-디히드로나프트[1,2-C]이속사졸 유도체.  이와 같은 화합물은 세로토닌 5-HT 3 길항제로서 유용하다.  이러한 화합물은 불안증, 정신병학적 장애, 정신분열증, 멀미, 구토 및 약물 의존성의 치료에 유용하다. 
     <화학식 I> 
     
       
     
     상기 식에서, A, X 및 N은 본 명세서에 기재되어 있다.
Patent KR-19990082546-A (KR)
IPC: A61F13/49
Filed: 1997-02-13
Abstract: A method for attaching a barrier cuff to an absorbent article. The first step is to provide an absorbent article having a longitudinal centerline and a transverse centerline perpendicular to the longitudinal centerline. A barrier leg cuff having a first edge and a second edge is provided. At least one of the edges of the barrier cuff is maintained parallel to the longitudinal centerline of the absorbent article. The barrier cuff is then bonded to the absorbent article along a juncture line that extends in a curved configuration with respect to the longitudinal centerline of the absorbent article.
Patent KR-20000064576-A (KR)
Title: 잉크젯 프린터헤드용 잉크 공급 시스템
IPC: B41J2/175
Filed: 1997-12-01
Abstract: 명세서에서 설명된 특정 실시예에 있어서, 오리피스(14)를 구비한 오리피스판(12)을 갖는 잉크젯 프린터헤드(10)용 잉크 공급 시스템은 밸브(34) 및 류에르 연결(33)을 통해 잉크 공급 용기(28)와 잉크 공급 용기로부터 잉크저장기로 잉크를 인출하기 위해 잉크저장기내에 진공을 발생시키도록 배치된 공기 펌프(52)로 연결된 잉크저장기(38)를 포함한다.  상기 잉크저장기(38)는 저장기 내의 소정의 잉크 레벨과 센서로부터의 신호에 응답하여 잉크 공급용기로부터 잉크를 인출하기 위해 공기 펌프(52)의 작동을 제어하는 제어유닛(50)을 따라 낮은 잉크 상태를 검출하는 센서를 검출하기 위해 잉크 센서(44)를 구비한다.  제한 통로(56)가 필터(54)를 통해 잉크저장기(38)를 대기중으로 연결하여 저장기(38)내의 잉크를 대기압으로 유지하고 저장기 내의 잉크 레벨이 잉크젯 프린터헤드(10)내의 오리피스(14)에서 소정의 역 액체 압력 헤드를 제공하도록 선택된다.  또한, 정화저장기(42)가 잉크저장기(38)로부터 프린터헤드(10)로 연결되는 공급선(24)으로 연결되고 공기 펌프(64)가 정화저장기(42)로 공기압을 가하도록 배열되고 정화저장기와 잉크저장기 사이의 선에서의 솔레노이드 밸브(40)가 잉크 재보충과 정화를 위해 폐쇄된다.  잉크저장기(38)내에서와 같이, 정화저장기(42)가 제한 통로(66) 및 필터(68)를 통해 대기중으로 연결된다.
Patent KR-19990067729-A (KR)
Title: 수소함유배기가스 처리장치
IPC: B01J23/42
Filed: 1999-01-06
Abstract: 반도체 제조시설 등으로부터 배출된 수소함유배출 가스를 소형의 처리장치로서, 수소함유배기가스 양 등이 큰폭으로 변동하여도 일반적으로 안정하고 확실하게, 따라서, 반도체제조장치측의 운전에 악영향을 주지 않도록 처리할 수 있도록 한다. 흡인구에 수소함유 배기가스의 배출원이 접속됨과 동시에 구동용유체공급구에 산소가스공급원이 접속된 이젝터형의 진공발생기와, 진공발생기의 구동용유체배출구에 접속된 촉매를 구비한 수소와 산소의 반응로와, 반응로의 출구로 접촉된 반응로로부터의 물을 저류하는 드레인탱크에 의한 처리장치를 구성한다.
Patent KR-20000050689-A (KR)
Inventor: LEE SANG DEOK
IPC: G02F1/133
Filed: 1999-01-13
Abstract: PURPOSE: A liquid crystal display device and a method for assembling the same are provided to accumulate the components of COG type liquid crystal display device on a rear case. CONSTITUTION: A liquid crystal display device includes a rear case(230), a back light assembly, a COG(chip on glass) type liquid crystal display panel(211), and a front case(220). The rear case(230) includes a binder on a sidewall and a container member and an inverter container on the bottom. The back light assembly includes a container frame, a reflection plate, a light waveguide plate, a lamp assembly, and a plurality of optical sheets. The back light assembly is formed with four side walls. The COG type liquid crystal display panel(211) is connected to a drive IC(integrated circuit). The liquid crystal display panel further includes a flexible printed circuit which is electrically coupled with a printed circuit board contained on the container member of the printed circuit board. The front case(220) covers the front surface of the effective screen of the COG type liquid crystal display panel and is coupled with the rear case through a binding nose.
Patent KR-20000051765-A (KR)
Inventor: KIM JAE RYONG
IPC: H04N5/44
Filed: 1999-01-26
Abstract: PURPOSE: An apparatus for capturing objects of a television program is provided to capture an object of a user's preference so as to store the captured object in another display or to print the captured image. CONSTITUTION: An apparatus for capturing objects of a television program includes a MODT decoder(107), an object data memory(108), a controller(109), and an output device(111). The object capturing apparatus is included in the television having a remote receiver(102), a demultiplexor(104), and a display(106). The MODT(media object description table) decoder(107) decodes the auxiliary information data divided to a MODT data at the demultiplexor. The object data memory(108) stores the auxiliary information data divided at the MODT decoder. The controller(109) controls the inverse multiplexor according to the signal of the remote receiver, read the MODT data stored in the memory and generates a control signal corresponding to the read MODT data. The controller further generates a control signal for displaying a variety of auxiliary information. The output device(111) displays the MODT corresponding to the object captured in a converted form such as a picture file or print the MODT data.
Patent KR-19990045874-A (KR)
Filed: 1999-02-03
Abstract: 본 발명은 터보기능을 가진 일회용 가스라이터의 노즐조정링에 관한 것으로서, 가스라이터의 가스탱크에 가스를 주입한 후 헤드를 용착하고, 헤드에 구성된 노즐하우징에 착탈되는 노즐조정링의 상단 일측부위에 상하로 구멍이 난 원통을 결합하고, 원통의 상단내측 공간에 터보용열선을 설치함으로써, 라이터점화시 불꽃이 원통안의 터보용열선을 가열함에 따라 터보기능을 얻을수 있으며, 또한 노즐조정링을 좌우로 움직여 불꽃의 세기를 조절함에 따라 일반적인 불꽃과 터보용불꽃을 자유자재로 얻을 수 있게 하였다. 
     위와같이 구성된 본 발명은 기존의 일회용 가스라이터을 이용하여 저렴하게 터보기능을 얻을수 있게 됨에따라, 바람이 불면 점화하기가 어려운 일회용 가스라이터의 약점을 해결한 것이다.
Patent KR-19990045924-A (KR)
Title: 초배지제조장치
IPC: D21H27/30
Filed: 1999-02-13
Abstract: 초배지 제조장치에 있어서, 재료가 순수한지인 운용지에 부직포를 합지하여 초배지를 제조하는 장치로써 운용지와 부직포가 접착제에 의해 합지된후 가열온도가 상이한 열롤러 및 냉롤러사이를 지그재그로 통과하는동안 서서히 가열경화되어 접착이되므로 완벽하고 균일한 합지에 의한 초배지를 얻을 수 있고 또한 합지된 초배지의 권취시에 텐션장치에 의하여 권취롤러에 텐션을 주게되므로 합지가 일그러지지 않고 일정한 텐션에 의해 권취가되는 효과가 있는 것이다.
Patent KR-19990072991-A (KR)
Title: 압전변압기구동회로및구동방법
IPC: H02M7/48
Filed: 1999-02-26
Abstract: 압전 변환기 구동 회로 및 방법은 압전 변압기의 특성이 열화되는 것을 방지할 수 있다.  선정된 전압 보다 낮은 구동 전압의 반복 주파수, 선정된 범위 보다 좁은 스위핑 범위 및 선정된 기준 값 보다 큰 압전 변압기의 출력 전압은 부하 전류 비교 회로 및 출력 전압 비교 회로에 의해서 검출된다.  비교 결과에 응답해서, 스위핑 범위 변경 수단은 반복 주파수를 주파수 스위핑 발진기에서의 스위핑 범위의 상한 값 보다 크도록 변경시킨다.  이러한 변경에 의해서 압전 변압기의 출력 전압의 스위핑은 작은 값으로부터 개시되어, 압전 변압기 진동 속도의 실효값이 교정되므로 압전 변압기의 특성 열화가 방지된다.
Patent KR-20000056908-A (KR)
Inventor: YU SEONG HYUN
IPC: B25H1/00
Filed: 1999-02-27
Abstract: PURPOSE: A field workshop for facility work and work benches used therein are provided to systematically carry out overall working processes including taking in of construction materials, processing, framework, examination, and taking out products by providing work benches and keeping boxes for tools and construction materials. Also, the field workshop and work benches are provided to maximize productivity and to allow workers to work in a comfort posture by constituting the work benches to make a group of related works as a single system. CONSTITUTION: A field workshop for facility work and work benches used therein is rationalized by taking advantages of factory manufacturing and field manufacturing. A filed workshop for working the piping for facility and parts and for assembling thereof is set in a proper site in a field. After piping and parts are worked in a desired unit and then carried to a site for constructing, the frameworks are simply constructed in a final constructing site, and facility work is finished. The field workshop is selectively set in a site in a construction field, in which any interference with the other kind of works is scarce. In the field workshop, tools and work benches for performing the overall processes including pipe cutting, threading, welding, part assembling, and water pressure test are systematically arranged. The work benches set in the field workshop are a work bench for welding steel pipes, a horizontal station, a work bench for screw piping the steel pipes, a water reservoir for testing water pressure and air pressure, a work bench for a fusion welding machine, a work bench for pipe cutting, a work bench for painting, and a work bench for welding copper pipes. The work tools are a high speed cutter, a spark receiver for the cutter, a table drill, a welding machine, a station for drying welding rods, and a compressor. In addition, a tool cart, a material carrier, a large cart, a small cart, a supplementary work bench, a warehouse for materials, a shelves, a station for keeping disposable materials, a loading station for pipes, a product piling-up site, a site for keeping dangerous matters, a fire extinguisher, a desk for conference, and a drawing hanger.
Patent KR-20000059642-A (KR)
Inventor: YOO SEUNG GWANG
IPC: F25B1/00
Filed: 1999-03-05
Abstract: PURPOSE: A two stage ability rotary compressor is provided to reduce the system cost by using a low-priced solenoid type valve instead of high priced electromotive cross valve. CONSTITUTION: A two stage ability rotary compressor includes a refrigerant suction part in which a refrigerant gas of a low pressure passed through an evaporator flows in, a cylinder in which the refrigerant gas is compressed, a roller rotated in the inside of the cylinder with compressing the refrigerant, a vane having one end contacted with the roller for comparting a high pressure part and a low pressure part of the cylinder, a refrigerant discharging part connected with a condenser for discharging the compressed high pressure gas refrigerant, a return passage used as a passage in which the part of the refrigerant of the high pressure part returns to the refrigerant suction part, a flow rate controlling part for changing the ability of the compressor by opening and closing the return passage by using a piston(63) installed on the return passage, and a compression ability controlling part(60) for applying high pressure or low pressure to the flow rate controlling part by using a solenoid(61).
Patent KR-20000011227-A (KR)
Inventor: OKUMURA YOSIKI
IPC: G11C16/02
Filed: 1999-03-31
Abstract: PURPOSE: A chip enable signal generating circuit is provided to generate a chip enable signal for a chip without a provision of the chip information associated with the chip from the exterior. CONSTITUTION: The chip enable signal generating circuit used in common to a device(1a) having maximally m chips and a device(1b) having maximally 2¬m chips comprises: a first generation portion(20) for generating m-bit chip enable signals instructing an enable of a chip which is pointed by a chip number when the chip number is generated; a second generation portion(21) for generating m-bit chip enable generation signals indicating the same bit pattern as a chip enable signal which is generated by the first generation portion with regard to a particular chip number when the chip number is generated; and a select portion(22) for selecting and outputting a chip enable signal generated from the first generation portion when used to the device having the maximally m chips, and the chip enable generation signal generated from the second generation portion when used to the device having the maximally 2¬m chips.