baber/WOPTO huggingface dataset:
Patent KR-20020051653-A (KR)
Title: On line width control method in hot plate mill
Inventor: CHUN MYEONG SIK
IPC: B21B37/00
Filed: 2000-12-23
Abstract: PURPOSE: A method for online controlling width of a plate in a hot rolling mill is provided to improve a width accuracy of plate products by controlling an edging amount of the next pass so that an exit side width of the next pass is manufactured near the calculated target width. CONSTITUTION: The method for online controlling width of a plate in a hot rolling mill comprises a first step of performing a first pass rolling by calculating pass schedules of a horizontal roll(3) and pass schedules of edger rolls in lengthwise rolling process from dimensions of a slab and dimensions of the plate to be manufactured; a second step of calculating backward actual results of edging amounts by a load model formula from rolling forces measured from an edger rolling mill load cell after finishing the first pass rolling in the first step; a third step of calculating exit side widths from the actual results of edging amounts of the second step, gaps of edger rolls(2), horizontal rolling width widened amounts by thickness rolling, and width reduced amounts by edging; a fourth step of obtaining a difference between the first pass actual width results in the third step and pass one setup widths(indicated widths); a fifth step of controlling width by decreasing the next edging pass edging amounts as much as its deviation amount when a deviation amount between actual width results and setup widths is a positive value in the fourth step, and increasing the next edging pass edging amounts as much as its deviation amount when the deviation amount is a negative value; a sixth step of setting a next pass gap of edger rolls(2) by giving critical edging conditions in case of exceeding after judging whether or not adjusted next edging pass edging amounts obtained in the fifth step exceed the critical edging conditions; and a seventh step of repeating the steps 2 to 6 for the remaining next edging passes in the same method as in the step 6.
Patent KR-20020054551-A (KR)
Title: Urethane adhesives composition
Inventor: KIM BEOM SEONG
IPC: C09J175/04
Filed: 2000-12-28
Abstract: PURPOSE: Provided is a moisture curing type urethane adhesive composition excellent in initial adhesive force, final bond strength, and elasticity, which is used for adhesion-sealing a windshield of cars. CONSTITUTION: The moisture curing type urethane adhesive composition contains: 100pts.wt. of an initial urethane polymer obtained by reacting a polyol mixture and an isocyanate compound to be 1.0-2.0 of the equivalent ratio of isocyanate/hydroxy, wherein the polyol mixture is obtained by reacting at least one alkylene oxide and at least two activated hydrogen atom contained compound; 1-5pts.wt. of an initial urethane polymer obtained by reacting polyester polyol having a hydroxy value of 20-40 and hexa methylene diisocyanate to become the equivalent ratio of isocyanate/hydroxy being 1-5, wherein the polyester polyol is obtained by polycondensing a multivalent acid and a polyhydroxyl compound.
Patent KR-20020054711-A (KR)
Title: Method for Forming Multi-layered electrode lines of a semiconductor device
Inventor: LEE SEONG GWON
IPC: H01L21/3205
Filed: 2000-12-28
Abstract: PURPOSE: A formation method of multilayer interconnections of semiconductor devices is provided to improve a conductivity between an upper and a lower metals by minimizing an exposure of an etch stopper made of a nitride. CONSTITUTION: A first metal interconnection(22), a first insulating layer(23), and an etch stopper(24) are sequentially formed on a substrate(21). After defining a via region by selectively etching the etch stopper(24), an insulating layer(25) for forming sidewalls is deposited on the resultant structure. At this time, the insulating layer(25) is formed to prevent an exposure of the etch stopper(24). After forming a second insulating layer(26) and a photoresist pattern(27), a trench is formed by selectively etching the second insulating layer(26) and the insulating layer(25). At this time, sidewalls are formed with the insulating layer(25) instead of polymers due to the etch stopper(24), thereby preventing a decrease of a conductivity between an upper and a lower metals.
Patent KR-20020058155-A (KR)
Title: Control method of computer program used voice recognition technology
Inventor: PARK KEE BUM
IPC: G06F3/16
Filed: 2000-12-29
Abstract: PURPOSE: A method for reading of computer screen information and controlling a voice of program using voice synthesis and voice recognition is provided to enable a handicapped person to use a computer easily by reading screen information being displayed on a computer screen as a voice and controlling an operating system and programs of the computer by a voice only. CONSTITUTION: A computer is booted(S100). An OS program is started(S110). A message hook is set(S120). A message hooking is started(S130). It is checked whether voice is inputted(S140). If the voice is inputted, screen information being displayed on a screen is read as a voice(S200). If the voice is inputted, a program is controlled as a voice(S300). If the voice is not inputted, the current stage is returned to the above stage(S200,S150).
Patent KR-20020058443-A (KR)
Title: Method for forming polysilicon plug using slurry having high selectivity
Inventor: JUNG CHAE O
IPC: H01L21/28
Filed: 2000-12-30
Abstract: PURPOSE: A method for forming a polysilicon plug by using a high selective slurry is provided to prevent a damage of a nitride layer by performing a chemical mechanical polishing process using the high selective slurry. CONSTITUTION: A polysilicon(1) and a tungsten(3) are deposited on a silicon substrate. A nitride layer(5) as a gate hard mask is deposited on a surface of the above structure. A predetermined gate pattern is formed by patterning the nitride layer(5). An oxide layer(7) is formed on the whole surface of the substrate. A chemical mechanical polishing process is performed. The oxide layer(7) of a plug formation region is etched selectively and a photoresist(10) is filled therein. The chemical mechanical polishing process for the photoresist(10) and the nitride layer(5) are performed by using a high selective slurry. The remaining photoresist(10) is removed. The contact region is buried by depositing a conductive polysilicon thereon. The unnecessary polysilicon is removed by performing an etch back process.
Patent KR-20020057285-A (KR)
Title: Image sensor havig 3-structual light collecting area
Inventor: LIM JAE YEONG
IPC: H01L27/146
Filed: 2000-12-30
Abstract: PURPOSE: An image sensor having a light collecting unit of a three dimensional structure is provided to enable a direct programming process and to improve sensitivity, by using a double poly, namely, a dual gate structure. CONSTITUTION: The light receiving region is formed in a semiconductor substrate(50). A tunnel oxide layer(52A) is formed on the light receiving region. The first gate electrode is formed on the tunnel oxide layer. An insulation layer covers the first gate electrode. The second gate electrode receives a signal, formed on the insulation layer.
Patent KR-20010023288-A (KR)
IPC: F42B10/48
Filed: 1998-08-24
Abstract: A training projectile that utilizes flutes or flats to augment roll damping characteristics and thereby cause the projectile to crossover into a gyroscopically unstable trajectory pattern at a predetermined time. Prior to the crossover, the training projectile maintains a gyroscopically stable trajectory, which enables extrapolation to ascertain the trajectory of a non-training projectile that does not have an augmented roll damping section. The unstable trajectory pattern substantially reduces the distance the training projectile can traverse, thereby reducing the amount of area required for a training range.
Patent KR-20010033621-A (KR)
IPC: A61P31/04
Filed: 1998-12-23
Abstract: The invention provides novel beta-lactamase inhibitors, which are structurally unrelated to the natural product and semi-synthetic beta-lactamase inhibitors presently available, and which do not possess beta-lactam pharmacophore. These new inhibitors are fully synthetic, allowing ready access to a wide variety of structurally related analogs. Certain embodiments of these new inhibitors also bind bacterial DD-peptidases, thus potentially acting both as beta-lactamase inhibitors and as antibiotics.
Patent KR-20010034230-A (KR)
Title: 음극선관
IPC: H01J29/50
Filed: 1999-11-17
Abstract: 본 발명은 음극선관에 관한 것으로서, 주전자렌즈부를 구성하는 제 6 그리드(G6)를 제 1 양극전극(G61), 보조전극(G62) 및 제 2 양극전극(G63)에 의해 구성하고 있고, 제 5 그리드(G5)에는 중간레벨의 전압이 인가되고 제 1 및 제 2 양극전극(G61,G63)에는 양극전압이 인가되며, 중간전극(GM) 및 보조전극(G62)에는 이의 중간전압이 인가되는 것을 특징으로 한다.
Patent KR-20010034458-A (KR)
IPC: H04W12/00
Filed: 1999-01-28
Abstract: The invention relates to a cellular radio system and a method of ciphering data transmission in a radio system that comprises at least one transceiver communicating with other transceivers on a radio connection including one or more parallel radio bearers or logical channels, ciphering being performed on said bearers or logical channels using selected ciphering method parameters. Ciphering is performed on said bearers using selected ciphering method parameters. To ensure diverse and efficient ciphering, different ciphering method parameters can be used on each parallel radio bearer.
Patent KR-20010040480-A (KR)
Title: 홀로그래픽 스크린 및 부분적으로 폐색된 투사 렌즈를구비한 투사형 텔레비전
IPC: H04N9/31
Filed: 1998-01-29
Abstract: 텔레비전용 투사 스크린(22)은 필름 기판(24) 상에 3 차원 홀로그램을 갖는다.  상기 투사 스크린(22)은 적층된 홀로그램 및/또는 각각의 수직 및 수평 방향에서 광학적 특성이 변하는 프레넬 렌즈를 갖는다.  예컨대, 수직 및 수평 홀로그램은 시청 범위 40°의 수평 시청 범위 및 20°의 수직 시청 범위에 걸쳐 변하는 이득을 가질 수 있다. 투사 튜브(14, 16, 18)는 투사 스크린(22)을 향하여 지향되며, 광경로(34, 36)를 따라 있는 적어도 하나의 투사 튜브(14, 18)는 스크린에 대하여 수직하는 축엔 대하여 α각도로 수렴한다. 적어도 적색 투사 튜브(14) 및 선택적으로 녹색 튜브(16) 및 청색 튜브(18)도 부분적으로 또는 전체가 폐색된 중앙 영역을 갖는 렌즈(15, 17, 19)를 가지며, 이는 밝은 영역을 만들어 내는 산재된 빛을 흐리게한다. 상기 홀로그램(26)은 입사된 빛을 수집하여 그 빛을 수직선으로 재지향시키는 데에 효과적인 간섭 패턴을 형성함으로서 입사 투사축에서 떨어져 있으므로서 발생한 컬러 이동을 최소화 시켜 모든 이미지 밝기를 증가시킨다.  증가된 밝기는 렌즈(15, 17, 19)의 폐색된 영역(44)에서의 흐려짐 효과를 상쇄시킨다.
Patent KR-20010041236-A (KR)
IPC: H04N5/44
Filed: 1999-12-14
Abstract: The invention relates to an apparatus for reproducing programs, comprising storage means for storing a plurality of stored programs, for example, a television receiver comprising or controlling a video recorder. The apparatus comprises scheduling means for composing a personal reproduction schedule of a subset of said plurality of stored programs, in accordance with a user profile. If the apparatus is also capable of receiving broadcast programs, the scheduling means are adapted to include said broadcast programs in the reproduction schedule. A user-selectable virtual channel may be provided for easy inspection and execution of the reproduction schedule.
Patent KR-20010074664-A (KR)
Title: 두부.안부세정장치, 후드부착샤워노즐, 빗형두피세정구 및두부세정용샤워브러시
IPC: A46B11/06
Filed: 1999-03-08
Abstract: 본 발명의 두부ㆍ안부세정장치는, 액체의 비산을 방지할 수 있도록 하는 동시에 세정효율의 향상을 도모하는 것을 목적으로 한 것이다. 
     이 두부ㆍ안부세정장치는, 급수관(101a~101d)을 통하여 세정액을 공급하는 펌프(103a~103d)와 세정액을 출수하기 위한 복수의 출수구(105) 및 급수관 (10 1a~101d)를 통하여 공급된 세정액을 소정의 출수구(105)에 공급하기 위한 급수로 (106a~106d)를 갖는다. 
     그리고, 펌프(103a)로부터는 연속적으로 세정액이 압송되고 펌프(103b~103d)로부터는 간헐적으로 세정액이 압송된다. 
     그 결과, 출수구그룹(105a)로부터는 연속수류가 출수되고 출수구그룹( 105b~105d)로부터는 간헐수류가 출수된다.
Patent KR-20010041472-A (KR)
Title: 전자부품에 사용되는 고-융점 폴리아미드 조성물
IPC: C08L67/02
Filed: 1999-03-02
Abstract: 본 발명은 표면고정기술의 조건에 적당한 전기부품 및 전자부품을 제조하기 위한 폴리아미드 조성물에 관한 것으로서, 상기 조성물은 역류땜질공정동안 기포발생에 대해 높은 내성을 나타내며, 
     본 발명에 따른 조성물은 (a)적어도 약 280℃의 녹는점을 갖는 폴리아미드, (b)230℃ 이하의 녹는점을 갖는 중합체, (c)할로겐-함유 화합물, (d)선택적으로, (c)의 방염활성에 대한 상승제, (e)무기 강화물질, (f)선택적으로 기타 첨가제로 이루어지며, 
     산 이미드기를 갖는 화합물을 (f)가 적어도 함유한다면, 기포발생에 대한 특히 우수한 내성이 얻어지는 것을 특징으로 한다.
Patent KR-20010042452-A (KR)
Title: 항균제
IPC: C07D501/22
Filed: 1999-04-09
Abstract: 스트렙토코커스속, 모락셀라속, 헤모필러스속 및 크렙시엘라속 등에서 선택된 다른 2 종 이상의 속에 속하는 균에 의한 호흡기계 혼합감염증의 예방 또는 치료에 우수한 효과를 나타내는 항균제를 제공하는 것으로서, 페니실린계 항생물질, 특히 아목시실린과 세펨계 항생물질, 특히 세픽심 또는 세프디니르를 함유하는 항균제로서, 본 발명의 항균제는 이들의 합제 또는 각각의 단독 제제로서 병용 투여된다.
Patent KR-20010042906-A (KR)
Title: 시스-6,6-디메틸-3-옥사-바이싸이클로(3.1.0)헥산-2-온의제조
IPC: C07C61/35
Filed: 1999-04-19
Abstract: 본 발명은 
     1) 적당한 용매내에서 화학식 M(C 1-6 알콕사이드) y (식중, M은 적당한 양이온이고 y는 필요한 원자가를 채움)의 화합물과 β,β-디메틸-γ-(하이드록시메틸)-γ-부티로락톤의 설폰 에스테르를 반응시키는 단계; 또는 
     2) 적당한 용매내에서 화학식 M(C 1-6 알콕사이드) y 의 화합물과 4,5-에폭시-3,3-디메틸펜타노산의 C 1-4 알킬 에스테르를 반응시키는 단계 
     를 포함하는, 시스-6,6-디메틸-3-옥사-바이싸이클로[3.1.0]헥산-2-온의 제조 방법에 관한다.
Patent KR-20010053074-A (KR)
Title: 저 전하 주입 모스펫 스위치
IPC: H03K17/04
Filed: 1999-07-21
Abstract: 입력 제어 신호에 의해 턴 온(turn on) 될 때, 본 발명에 따른 MOSFET 트랜지스터 스위치는 저 임피던스(low impedance) 전압원을 적절하게 고 임피던스(high impedance) 부하에 연결한다.  스위치는 상대적으로 큰 제1 MOSFET 트랜지스터(Q1), 상대적으로 작은 제2 MOSFET 트랜지스터(Q2), 저항 및 전류원을 포함한다.  트랜지스터 (Q1,Q2)의 소스 단자는 전압원과 연결된다.  부하는 트랜지스터(Q1)의 드레인에 연결되는 반면 전류원은 트랜지스터(Q2)의 드레인 및 트랜지스터(Q1,Q2)의 게이트에 연결된다.  저항은 트랜지스터(Q1,Q2)의 게이트를 전압원에 연결한다.  제어 신호가 나타날 때 그 제어 신호는 전류원을 턴 온 시킴으로써 트랜지스터 (Q1,Q2)를 빠르게 턴 온 시켜 전압원을 부하에 연결한다.  제어 신호가 나타나지 않을 때 전류원은 턴 오프(turn off) 된다.  그 때, 트랜지스터(Q1,Q2)는 부하로의 전하 주입을 최소화하기 위해 제어된 속도로(controlled rate) 턴 오프(turn off) 한다.
Patent KR-20020060512-A (KR)
Title: Process for making chocolate with the use of frozen mould
Inventor: KIM GWAN PIL
IPC: A23G1/00
Filed: 2001-01-11
Abstract: PURPOSE: A method for producing chocolate complex using a frozen mould is provided, thereby cheaply and simply producing the chocolate complex and minimizing the loss of chocolate. CONSTITUTION: The producing method of shell typed chocolate comprises the steps of: injecting chocolate into a cavity of a mould to 30 to 40%(v/v) volume; and pressing a top of the chocolate with a cool piston of 5 to 10 deg. C having smaller width and length than those of the mould and pulling the cool piston.
Patent KR-20020061063-A (KR)
Inventor: OH TAE WON
IPC: H01L21/76
Filed: 2001-01-12
Abstract: PURPOSE: A method for manufacturing a semiconductor device is provided to reduce the processes manufacturing the device by not removing the pad oxide film and using as a buffer oxide film for an ion implanting process. CONSTITUTION: A pad oxide film(102) and a silicon nitride film are deposited on a semiconductor substrate(100) in order. A device isolation mask pattern is formed by patterning the silicon nitride film and a pad oxide film. A trench is formed by etching the substrate exposed by the mask pattern and an oxide film is deposited on the entire substrate by a CVD method. The oxide film on the silicon nitride film is entirely removed by a CMP process until the silicon nitride film of not forming the trench is exposed. The device isolation trench(T') of a shallow trench insulation structure is formed by remaining the pad oxide film on the trench. The ion implanting process is carried out by using the pad oxide film as the buffer oxide film in order to reduce the stress due to the formation of the silicon nitride film. After forming the impurity layer, the pad oxide film is remover by a reactive ion etching method.
Patent KR-20020067137-A (KR)
Title: A phase locked-loop control circuit for fast phase struck
Inventor: KANG GYEONG WON
IPC: H03L7/08
Filed: 2001-02-15
Abstract: PURPOSE: A PLL(Phase Locked Loop) control circuit for fast phase lock is provided to reduce the phase lock time by applying directly a tuning value to a voltage control oscillator. CONSTITUTION: A phase comparator(21) outputs a compared signal having a phase difference by comparing two signals to each other. A filter(22) is used for passing and amplifying a predetermined band of the compared signal. A voltage control oscillator(23) performs a frequency converting process in order reduce a phase difference of the compared signal. A frequency demultiplier(24) demultiplies a frequency signal of the voltage control oscillator(23) by a predetermined integer value. A digital-analog converter(25) is used for converting a digital signal having a tuning value of the voltage control oscillator(23) to an analog signal. A control portion(26) transmits the digital signal to the digital-analog converter(25) and controls a malfunction of the filter(22).
Patent KR-20020070670-A (KR)
Title: Automatic control device of a throttle valve
Inventor: KIM GANG SU
IPC: F02D9/08
Filed: 2001-03-02
Abstract: PURPOSE: An automatic opening control apparatus of a throttle valve is provided to prevent overheat of an engine by automatically shutting off the throttle valve so as to prevent the damage of components related to the lubrication and braking. CONSTITUTION: An automatic opening control apparatus of a throttle valve(10) comprises a sensor part(200) detecting each driving condition in a vehicle and outputting a signal and a magnetic clutch(100) opening and shutting off the throttle valve according to the signal from the sensor part. The sensor part consists of a switch part(210) for coolant temperature, a switch part(220) for oil pressure, and a switch part(230) for parking brake. Each switch part(210,220,230) is formed of 2 contact type switch(250) and respectively connected with a warning lamp(240).
Patent KR-20010093053-A (KR)
Title: Method and device for slag-free filling of molten baths from metallurgical fusion containers
Inventor: FUCHS REINHARD
IPC: B22D43/00
Filed: 2001-03-20
Abstract: PURPOSE: A method and an apparatus for slag-free teeming of metal melt from a metallurgical vessel like a converter are provided. CONSTITUTION: The melt vessel(1) is inclined to the left toward the discharge opening(4) so that the metal melt(5) flows out of the vessel(1) through the discharge opening(4) of the vessel(1) over a discharge edge(10) as a pouring stream(9) of molten metal. A jetting lance(20) is arranged outside of the melt vessel(1). The jetting lance(20) is so aligned that its front end(26) with, preferably, a rectangular slot-shaped nozzle is located closely adjacent to the molten metal discharge edge(10), and a fluid jet(25), which emerges from the nozzle, is directed parallel to the bath surface(7) to the most possible extent. This measure results in the slag melt(6) being forced back from the surface of the metal melt(5) in the region of the discharge edge(10). As a result, the pouring stream(9) substantially consists only of the metal melt(5). The fluid jet(25) is directed parallel to the surface of the metal melt(5) to a most possible extent. This prevents an undesirable intermixing of the metal melt(5) with the slag melt(6) which can occur as a result of swirling produced when the fluid jet spreads at an angle to the bath surface. In order to retain the desired alignment of the jetting lance(20) also during the change of the position of the melt vessel(1) during following inclination movements of the melt vessel(1), the jetting lance(20), together with its support(21), is arranged on a manipulator(27). The support(21) is so formed that the jetting lance(20) can pivot in directions shown by a double arrow(23) and is displaceable horizontally in directions shown by a double arrow(24). To insure a horizontal displacement of the jetting lance(20), the lance support(21) is supported on the slide(22) provided on the manipulator(27). Because the pivotal and horizontal movements of the jetting lance(20) in the directions(23), (24) must so be controlled by the manipulator(27) that the jetting lance(20) continuously follow the discharge movement of the melt vessel(1), the manipulator(27) should insure a corresponding adaptation of the alignment of the jetting lance(20) with the actual position of the melt vessel(1) at all times, i.e., continuously.
Patent KR-20020074802-A (KR)
Title: Method for Preparing Powder of Egg Yolk Having IgY, Powder of Egg Yolk , and Compositions Comprising the Same
Inventor: BAE YUN UI
IPC: A61K39/395
Filed: 2001-03-22
Abstract: PURPOSE: A process of preparing egg yolk powder containing antibodies treated with a grapefruit seed extract to maintain the potency of antibodies and to increase preservability and an additive to remove a fishy smell in the yolk and to increase the flavor and preservability thereof is provided. Because the composition containing the egg yolk powder is power, it is convenient to handle and take and can also be encapsulated. CONSTITUTION: The antibodies induced from strains causing various diseases in mammals are injected to laying hens. An egg yolk liquid containing an antibody is separated from the egg produced from the immunized laying hens, added with 250 to 1,000ppm grapefruit extract and 5 to 15% by weight of white sugar and heated at 60 to 70deg.C for 3 to 10min one to three times. The heat treated egg yolk liquid is spray-dried or freeze-dried. The composition comprises 40 to 50% by weight of egg yolk powder, 45 to 55% by weight of lactic acid powder, 0.5 to 1.5% by weight of silica dioxide, 0.5 to 1.5% by weight of magnesium stearate and 0.1 to 2% by weight of a sweetener.
Patent KR-20020078035-A (KR)
Title: Cooler for to take into custody cosmetic
Inventor: NOH PAN SEOK
IPC: F25D15/00
Filed: 2001-04-04
Abstract: PURPOSE: A small refrigerator for cosmetics is provided to prevent change in quality and deterioration of efficacy of cosmetics. CONSTITUTION: A refrigerator includes a semiconductor element(6) built in a rear part of a main body(1) and having a cool sink(7) and a heat sink(8) placed on both sides thereof, respectively, to form a cooling unit; a fan(9) placed behind the heat sink to discharge heat of the heat sink; a printed circuit board(3) with a power switch(4) installed on a front surface of the main body; a transparent window(14) formed on a part of a lid(11) to allow a user to check contents; and a main storage part(5) and an auxiliary storage part(5a) placed in the main body.
Patent KR-20020079049-A (KR)
Title: earthquake insulating composite bearing
Inventor: LEE SANG JUN
IPC: E01D19/04
Filed: 2001-04-12
Abstract: PURPOSE: A combined earthquake isolating apparatus is provided to extend its use range by allowing the apparatus to be appropriately modified according to various conditions corresponding to various situations, and to considerably reduce a time and a labor required to the manufacture thereof. CONSTITUTION: The combined earthquake isolating apparatus(100), to be installed between upper and lower structures for absorbing a force acting between the structures, comprises a lower plate(110) to be fixed to the lower structure; an upper plate(120) to be fixed to the upper structure; a vertical load support device(130) installed between the upper and lower plates, which allows a mutual horizontal movement of the upper and lower plates; and a restitution device(150), which elastically connects the upper and lower plates for providing a restitutive force against the mutual horizontal movement therebetween.
Patent KR-20020079144-A (KR)
Title: Apparatus and Method of Polynomial-Basis Multiplication based on Finite-Field
Inventor: BAE YEONG HWAN
IPC: G06F7/00
Filed: 2001-04-13
Abstract: PURPOSE: A device and a method for multiplying the finite fields on a polynomial basis are provided to offer a small volume circuit by using a digit serial mode in the finite fields multiplication of high degree polynomial and to realize the fast multiplication by using a fast clock generator deferent from the system clock. CONSTITUTION: The first storing tool stores a multiplier, a multiplicand and a product as the operation result by dividing into a digit unit. The second storing tool(15) assists the operation by storing a middle value necessary for a process carrying out the operation in the first storing tool and stores the final result. An address generating tool(16) generates an address of the second storing tool for writing or reading the value necessary for the first storing tool from the second storing tool. A clock generating tool(17) provides the fast clock operated by being separated from the system clock to the first storing tool.