baber/WOPTO huggingface dataset:
Patent KR-20020037584-A (KR)
Title: Method for tracking frequency in interactive cable television receiver
Inventor: BAEK BYEONG SEOK
IPC: H04N21/426
Filed: 2000-11-15
Abstract: PURPOSE: A frequency tracking method of an interactive CATV receiver is provided to develop the interactive CATV receiver to perform a frequency tracking, so as to easily perform a tracking for a downstream band while having access to the Internet as watching a CATV. CONSTITUTION: A controller sets an optional frequency(S31). The controller performs an initialization by locking the set frequency, and decides whether a signal included in the locked frequency is capable of being demodulated(S32, S33). If not, the controller decides whether the locked frequency is bigger than a maximum frequency of a downstream band(S34). If so, the controller increases the frequency up to a valid frequency, and decides whether the signal included in the frequency is capable of being demodulated(S38, S39). If the locked frequency is not bigger than the maximum frequency, the controller decides whether the locked frequency is a frequency of a downstream-incapable band between the first and the second downstream bands. If so, the controller sets the frequency to a minimum frequency of the second downstream band, and if not, the controller increases the frequency(S35, S36, S37). If the signal included in the frequency is capable of being demodulated, the controller completes a tracking routine to perform a demodulating process(S40).
Patent KR-20020039576-A (KR)
Title: Board Transmitting Device for an Upright PC Board Etching Machine
Inventor: KUO MATTHEW
IPC: B65G49/06
Filed: 2000-11-22
Abstract: PURPOSE: A board transferring device for an upright PC(Personal Computer) board etching machine is provided to make a PC board transferred stably at a uniform speed in an upright PC board etching machine and to improve the etching efficiency. CONSTITUTION: A board transferring device for an upright PC board etching machine comprises plural units. Each unit comprises a U-shaped frame including a pair of wheel frames(200) vertically inserted to both upper ends, a rotational transferring wheel(400) placed between one ends of the U-shaped frame, and a power steering wheel(500) placed between the other ends of the U-shaped frame. The units are mounted in serial. The wheel frames and the rotational transferring wheels rotate simultaneously. An engaging member is formed between neighboring two wheels to surely transfer a PC board and internally combine the components.
Patent KR-20010008368-A (KR)
Inventor: SONG GI MIN
IPC: G06F17/00
Filed: 2000-11-27
Abstract: PURPOSE: A real-time interactive information service system and method using motion pictures is provided to make the netizens directly experience a site in front of their PC's by providing main events, such as natural scenery, folk plays, etc., through motion pictures in real time. CONSTITUTION: A main server(10) provides information and service to a plurality of user computers(1) through real-time motion pictures. A local management server(20) is constructed to support the main server(10) by regions. An administrative computation network server(30) is constructed to support the main server(10) by local administration. A local government management computer(40) provides real-time motion picture information classified by administrative districts through the administrative computation network server(30). A local famous place management computer(50) provides real-time motion picture information for the origin and history of a regional famous place through the administrative computation network server(30). An event management computer(60) provides motion picture information, such as regional events, folk plays, etc., through the administrative computation network server(30) in real time. An electronic commerce management computer(70) provides real-time motion picture information for local specialties through local management server(20) or the administrative computation network server(30).
Patent KR-20020041479-A (KR)
Title: Back-light source module of liquid crystal display
Inventor: YU SOON JAE
IPC: G02F1/13357
Filed: 2000-11-28
Abstract: PURPOSE: A light source module of a back light of an LCD is provided to fabricate a light source of a back light operated with low voltage by combining an LED and a light guide plate to eliminate necessity for expensive elements and extend the life time of a battery. CONSTITUTION: A light source module of a back light of an LCD includes an LED light source(10), a driving PCB(20), the first and second light guide plates(30,40), and a lens. The driving PCB drives the LED light source. The second light guide plate disperses light emitted from the LED light source to send the light to the first light guide plate located at the back side of the LCD. The light dispersed by the second light guide plate is inputted to the first light guide plate, being perpendicular to the first light guide plate, according to the lens.
Patent KR-20020042924-A (KR)
Title: 4 mask patterning design method
Inventor: CHOI HYEON MUK
IPC: G02F1/136
Filed: 2000-12-01
Abstract: PURPOSE: A four-mask patterning designing method is provided to make transmissivities in horizontal and vertical directions uniform by adjusting the slit size in a gray-tone area. CONSTITUTION: An active layer including an insulating layer and a layer for forming source and drain electrodes are sequentially formed on a glass substrate including a gate electrode. A photoresist is coated on the source and drain electrode layer, exposed using a mask having a full exposure part, non-exposure part and a partial exposure part, and developed, to accomplish a gray-tone pattern. The laminated layers are sequentially etched using the gray-tone pattern, to form a thin film transistor.
Patent KR-20020047958-A (KR)
Title: Constant velocity ratio universal joint for vehicle
Inventor: HAN CHANG MUN
IPC: F16D3/20
Filed: 2000-12-14
Abstract: PURPOSE: A constant velocity joint of a vehicle is provided to prevent overheating by supplying grease through plural passages formed around the inner race actively, and to lubricate actively by preventing degradation. CONSTITUTION: A ball cage(40) is assembled with an outer race(20), and plural balls(30) are arranged in the ball cage. An inner race(50) is combined with the ball cage and a driving shaft. Plural ball grooves are formed radially around the inner race, and plural passages(52) are formed axially in the outer periphery of the inner race. The lower part of the ball is inserted to the ball groove. Grease is circulated through passages for cooling heat from the outer race and the inner race and for lubricating. A constant velocity joint is turned with keeping the constant angle between the inner race and the outer race. Overheat is prevented, and lubricating is performed actively with supplying grease through plural passages around the inner race.
Patent KR-20020050012-A (KR)
Title: A method for manufacturing ultra high silicon steel sheets by pvd
Inventor: JUN JUNG HWAN
IPC: C21D8/12
Filed: 2000-12-20
Abstract: PURPOSE: Provided is a production process of ultra high Si steel sheet which uses physical deposition to vaporize pure silicone and treat diffusing temperature instead of chemical deposition so that it figures out pollution and corrosion by chemical deposition. CONSTITUTION: The production process of ultra high Si steel sheet comprises the steps of: (i) washing Si steel sheet and eliminating impurities on the surface; (ii) keeping temperature of steel sheet at 200-1400deg.C to radiate an electronic beam; (iii) vacuum depositing silicone at 2.2-15.5% range against Si steel sheet on a basis of both sides total thickness on the surface of Si steel sheet; and (iv) thermally treating the steel sheet with silicone deposited at 900-1200deg.C.
Patent KR-20020051771-A (KR)
Title: Steering wheel fixing apparatus for a car clash test
Inventor: LEE SEUNG HUN
IPC: G01M7/08
Filed: 2000-12-23
Abstract: PURPOSE: A steering wheel fixing apparatus for vehicle crash test is provided to minimize distortion of coupling portion, while obtaining test data with improved reliability. CONSTITUTION: A steering wheel fixing apparatus comprises a wheel fixing column(60) where a steering wheel(51) is assembled through a bolt(52); a wheel fixing base(70) for supporting the wheel fixing column; a load cell base(85) assembled to the top of a steering column(90) through a bolt(95); and a three-axis load cell(80) interposed between the wheel fixing base and the load cell base, and which measures three-axis load. The lower portion of the wheel fixing column has a gradually decreasing outer diameter. Thus, the wheel fixing column and the wheel fixing base are coupled in such a manner that the lower portion of the wheel fixing column is inserted, in multiple steps, into the wheel fixing base. The wheel fixing column includes a wheel fixing portion having a male screw part for assembly of the steering wheel through the bolt; and a base insertion portion(62) connected to an end of the wheel fixing portion, and which has an outer diameter smaller than the outer diameter of the wheel fixing portion, so as to be inserted into the wheel fixing base.
Patent KR-20010062708-A (KR)
Inventor: SHIMOMURA SATOSHI
IPC: A63F13/95
Filed: 2000-12-26
Abstract: PURPOSE: A game device, an image generating method, and a recording medium are provided to largely increase the number of cards or characters used in a game space even with a small memory capacity. CONSTITUTION: Images of plural cards/characters are respectively split into plural partial images and stored. This game device(11) and this image display method can synthesize and generate images of cards more than the number of the cards before splitting by combining split partial images. Because the capacity of memory for storing partial images can be covered with only a capacity required for storing images of cards before splitting, a lot of cards/ characters can be displayed by synthesizing the cards/characters with a small capacity of memory. The memory capacity required for storing the data can be reduced by carrying out the operation of data for offense and defense indices, or the like, relating to partial images.
Patent KR-20020054025-A (KR)
Title: A vibration absorber for use in a standing seat of a turret-truck driven in the premises
Inventor: OIKAWA JUN
IPC: B60N2/50
Filed: 2000-12-27
Abstract: PURPOSE: A device for absorbing vibration of a standing seat of a turret-truck driven in a premises is provided to prevent the damage or deformation of a step plate by forming both sides of the step plate to be indented equally to or more than both sides of a bottom plate, thereby assuring safe driving. CONSTITUTION: In a device for absorbing vibration of a standing seat of a turret-truck driven in a premises, a step plate(5) of the standing seat is separated from a bottom plate(2) upward for allowing vibration in every direction via elastic elements(6), and bent portions(5a) are formed downward at both sides of the step plate. The bottom plate has downward bent side surfaces(2a) at both sides and concave cut parts(4) in the middle of the side surfaces. The bent portions of the step plate are positioned in the concave cut parts of the side surfaces of the bottom plate. The bent portions of the step plate are indented equally to or more than the ends of the side surfaces of the bottom plate. The elastic elements are formed of rubber for absorbing horizontal and vertical shock applied to the step plate by the road surface.
Patent KR-20020055671-A (KR)
Title: Operating structure of speedmeter pointer for automobile
Inventor: LEE YEONG JONG
IPC: B60K37/02
Filed: 2000-12-29
Abstract: PURPOSE: A structure for operating a pointer of a speed meter for a car is provided to exactly display a speed change of the car and to prevent a span length meter and a total mileage meter from being covered. CONSTITUTION: A structure for operating a pointer of a speed meter for a car includes a pointer(10) and a connection shaft(24). The pointer indicates graduations on a speed meter board(12). The connection shaft is vertically bended on a pointer shaft(22) operating the pointer. A slot hole is formed in the speed meter board for making the vertically bended part of the connection shaft perform a slide motion drawing an arc. The pointer has a length to an extent that the pointer does not cover a span length meter and a total mileage meter formed on a speed meter indicator board.
Patent KR-20010022416-A (KR)
Title: 복막 투석을 수행하기 위한 방법 및 장치
IPC: A61M1/28
Filed: 1998-07-27
Abstract: 치료과정에서 특정 생리학적 요구를 충족시키기 위해 환자(10)에게 운반되는 투석액의 조성을 선택하고 변화시킬 수 있는 자동화된 복막 투석 장치를 제공한다. 상기 장치는 분리된 용액 용기들(S1, S2)로부터 소정의 비율로 혼합하기 위한 혼합실 수단 안으로 운반되는 삼투제제, 전해질 및 다른 소정의 투석액 성분들의 용액들을 측정하기 위한 수단(P1)을 포함한다. 환자(10)에게 신선한 투석 유체를 운반하기 위한 수단과 소모된 투석 유체를 상기 환자로부터 제거하기 위한 수단은, 복막내의 압력과 복막에서 상기 유체의 다른 조건들을 감시하기 위한 수단 및 투석액 주입과 제거의 비율을 조절하기 위한 감시 수단의 신호에 반응하는 전자조절 수단을 포함한다.
Patent KR-20010023690-A (KR)
Title: 중합 촉매
IPC: C07F15/00
Filed: 1998-09-02
Abstract: 하기 화학식 B 에 나타난 골격 단위를 포함하는 질소 함유 전이 금속 화합물을 함유하는, 1-올레핀의 중합에 유용한 촉매계가 기재되어 있다: 
     [화학식 B] 
     
       
     
     [여기서, M 은 Fe[II], Fe[III], Ru[II], Ru[III] 또는 Ru[IV] 이고; X 는 전이 금속 M 에 공유 결합 또는 이온 결합된 원자 또는 기를 나타내고; T 는 전이 금속 M 의 산화 상태이고, b 는 원자 또는 기 X 의 원자가이고; R 1 , R 2 , R 3 , R 4 및 R 6 은 독립적으로 수소, 할로겐, 히드로카르빌, 치환된 히드로카르빌, 헤테로히드로카르빌 또는 치환된 헤테로히드로카르빌로부터 선택된다].
Patent KR-20010015636-A (KR)
Title: Cathodoluminescent screen with a columnar structure, and the method for its preparation
IPC: H01J9/22
Filed: 1998-10-26
Abstract: A cathodoluminescent mosaic screen on a light-transparent substrate wherein the light-emitting components of the screen are implemented as light-guiding single-crystalline columns. A method for preparation of the screen by vapor deposition of the luminescent material onto the substrate coated by a localized liquid phase has been proposed.
Patent KR-20010015670-A (KR)
Inventor: ZIEGLER URSULA
IPC: B29C45/26
Filed: 1998-09-28
Abstract: 본 발명은 폴리아세탈(성분 a), 및 직접 성형되고 하나 이상의 열가소성 탄성중합체로 이루어진 기능성 소자(성분 b)로부터 복합체를 제조하는 방법에 관한 것이다.  본 발명에 따라서, 성분 a 및 b는 다양한 경도를 갖는다.  제1 단계에서, 경도가 큰 물질(성분 a)을 금형으로 예비사출시킨다.  이후에, 상기 물질을 냉각시키고, 제거한 다음, 다른 대형 캐비티에 놓거나 부분적으로 성형시키고, 이에 의해 물질이 금형의 일부에 보유된다.  다음에, 물질을 대형 캐비티로 이동시키거나, 제거하지 않고, 이에 의해 제2 단계에서, 성분 a로 이루어진 성형된 부품을 경도가 낮은 물질(성분 b)을 사출시켜 성분 b에 결합시킨 다음, 이동 장치에 의해 확대되는 동일한 공구로부터 복합체로서 제거한다.
Patent KR-20010031344-A (KR)
IPC: H04N19/89
Filed: 1998-10-23
Abstract: A system and method for source coding and decoding a signal to provide for a robust error recovery is disclosed. The signal comprises a plurality of signal elements (SEs) with each SE having a plurality of components. The signal is divided into a plurality of data sets, each data set having a set of SEs. SEs of a data set are allocated to a plurality of segments. Components of the allocated SEs are distributed across the plurality of segments. In one embodiment, this is used in the transmission of video signals over a potentially lossy communications channel.
Patent KR-20010024630-A (KR)
Title: 통신 라인에 접속을 위한 통신 세트
IPC: H04M1/82
Filed: 1999-09-09
Abstract: 본 발명은 전화선과 같은 통신 라인에 접속되는 통신 세트에 관한 것으로, 상기 통신 세트는 링잉 신호 검출과 같은 세트 기능 검출 수단과, 상기 세트 기능 검출 수단 내에 포함된 스캐닝 장치에 접속된 공통 출력에 접속된 정류기 회로를 포함하며, 상기 스캐닝 장치는 라인 상태를 검출한다.  필요시 되는 최소의 컴포넌트, 즉 칩 상에 오직 하나의 입력 핀만을 필요로 하는 아날로그/디지탈 변환기로 대량의 라인 상태를 검출할 수가 있다.
Patent KR-20010033070-A (KR)
Title: 자기 베어링과 그 사용방법
IPC: F16C32/04
Filed: 1999-10-14
Abstract: 본 발명은 제 1부(1,20)는 제 2부(3,10)에 관하여 자성을 띄게 장착되고, 상기 제 2부(3,10)는 이방성 결정 또는 상기 이방성 결정으로 형성된 다수개의 입자를 포함하는 제 2타입 초전도 물질(2)을 구비하며, 상기 결정은 전류 운반평면내에서 흐르는 초전도 전류내에서 이방성을 나타내고, 상기 제 1부(1,20)는 초전도 물질(2)과 상호작용하는 자석 형태( 1;6, 7, 8;11, 12, 13, 14;30, 31, 32, 34;50, 51, 52, 53)를 가지며, 상기 결정자체 또는 다수개의 입자내 상기 결정은 상기 전류 운반평면(a-b)상에 수직하는 상기 제 1부(1,20)에 직면한다.
Patent KR-20010024779-A (KR)
IPC: B41M5/00
Filed: 1999-10-20
Abstract: An object of the present invention is to provide a coating composition with which it is possible to make coated paper that is excellent in various properties such as glossiness, water resistance, solvent resistance, heat resistance, thermal blocking resistance and ink penetration and that can readily be recycled. This object of the invention can be attained by a coating composition comprising a hydrosol emulsion and colloidal silica, wherein the hydrosol emulsion is obtained by neutralizing, with an alkali, a synthetic resin emulsion prepared by dispersing, in water, particles of a synthetic resin having carboxyl group and an alkoxysilyl group.
Patent KR-20010034296-A (KR)
Title: 부분 단선 상태에 대해서 전력 도출이 없는 퓨즈 회로
IPC: H01L27/04
Filed: 1999-06-15
Abstract: 퓨즈 회로(100)는 퓨즈 소자(110) 및 상기 회로가 퓨즈 소자(110)가 사실상 부분적인 고유 상태일지라도 퓨즈 소자(110)가 완전한 단선 상태인 것처럼 실행되는 피드백 경로를 포함한다. 부분적인 고유 상태 퓨즈가 보통 전력의 연속 드레인을 초래하는 반면에, 전류의 피드백 경로 컷은 부분적인 고유 상태의 퓨즈 소자(110)를 통하여 흐른다.
Patent KR-20010040594-A (KR)
Inventor: GUSKEY SUSAN MARIE
IPC: A61K8/81
Filed: 1999-02-03
Abstract: 약 5 내지 약 50 중량%의, 음이온성 계면활성제, 조성물의 pH에서 음이온성인 기를 갖는 쯔비터이온성 또는 양쪽성 계면활성제, 및 이들의 조합물로 구성되는 군으로부터 선택된 계면활성제; 약 0.025 내지 약 3 중량%의, 양이온성 전하 밀도는 약 0.2 내지 약 7 meq/gm이고 분자량은 약 5,000 내지 약 10,000,000인 유기성의 양이온성 중합체; 약 0.1 내지 약 10 중량%의 수불용성 헤어 스타일링 중합체; 약 0.1 내지 약 10 중량% 수불용성 휘발성 용매; 약 0.005 내지 약 2.0 중량%의 결정질의 히드록실-함유 안정화제; 및 약 26.5 내지 94.9 중량%의 물로 이루어진 헤어 스타일링 샴푸 조성물이 기재된다.   조성물은 스타일링 중합체가 헤어에 도포되는 것의 효율을 개선시켜, 샴푸 조성물로부터 스타일링 기능을 개선시킨다.
Patent KR-20010041534-A (KR)
Title: 무선 통신을 위한 공간-시간 코딩 신호의 복호화 장치
IPC: H04B7/06
Filed: 1999-02-26
Abstract: 신호를 부호화하여 복수의 안테나 상으로 전송하는 종래의 기술은 다수의 송신 안테나에 대한 부호화 방법을 발표함으로써 진보된다.  또한, 송신기의 모든 송신 안테나에 대해 결정 규칙이 형성된 최대 가능성 복호화의 일반화된 방법이 공개되고, 다음의 방정식을 최소화하는 송신 심벌에 대한 결정이 행해진다. 
     
       
     
     여기서, 
     
       
     
     r t   j 는 수신 안테나(j)에서 시간 간격(t)으로 수신된 신호이고, 
       는 심벌(c i )을 송신 중인 송신 안테나와 수신 안테나(j) 간의 채널 전달 함수의 공액 복소수이며, 
     δ t (i)는 시간 간격(t)에서의 심벌(c i )의 부호이다.
Patent KR-20010042359-A (KR)
Title: 코일 스퍼터 분포를 제어하기 위한 회전 코어를 갖는 가변임피던스의 용법
IPC: H01L21/203
Filed: 1999-03-25
Abstract: 기판상의 스퍼터된 타겟 물질의 필름을 증착시키기 위한 프라즈마 증착 시스템에서, 무선 주파수(RF) 코일을 임피던스-정합 박스내의 가변 리액턴스들은 증착 공정동안 인덕터 코어들을 회전시키므로써 가변시킬 수 있다. 무선 주파수 코일 및 기판 가열, 및 필름 증착은 무선 주파수 코일을 따른 무선 주파수 전압 분포들을 시간-평균으로 보다 균일해 진다.
Patent KR-20010043665-A (KR)
Title: 고수율 전자 빔 리소그래피를 위한 콤팩트 광전자 방출소스, 필드 렌즈 및 대물 렌즈 배열
IPC: H01L21/027
Filed: 2000-03-15
Abstract: 개선된 소형의 탄뎀 광자 및 전자 빔 리소그래피 시스템은 대물 렌즈와 결합하여 사용되는 광전자 방출 소스에 인접한 필드 렌즈를 포함하며, 이에 의해 이용가능한 방출 패턴에서 필드 수차가 최소화되고 전자 사이의 반응이 최소화되어서 수율이 개선된다. 원한다면, 축소 렌즈는 시스템의 축소 비율을 증가시키기 위하여 필드 렌즈와 대물 렌즈 사이에서 사용될 수 있다.
Patent KR-20010034865-A (KR)
Title: 통신 시스템 사이에 상호운용성을 제공하기 위한 장치
IPC: H04W92/02
Filed: 1999-05-28
Abstract: 정보 전송 시스템(ITS : Information Transfer System)(10)은, 각각 다른 신호 포맷을 이용하는 많은 수의 외부 통신 시스템 사이에서 상호운용성(interoperability)을 제공할 수 있다. ITS(10)는, 복수의 무선 신호 포맷과 공통 신호 포맷 사이에서 변환하기 위한 복수의 무선 인터페이스 유닛(12a 내지 12n)과, 복수의 유선 신호 포맷과 상기 공통 신호 포맷 사이에서 변환하기 위한 복수의 유선 인터페이스 유닛(14a 내지 14n)을 갖는 인터페이스 유닛 그룹을 포함한다. 게다가, ITS(10)는 상기 인터페이스 유닛 그룹 내의 인터페이스 유닛 사이에서 연결을 선택적으로 수립하기 위한 스위치(16)를 포함한다. 이러한 인터페이스 유닛 중 일부 또는 모두는 새로운 신호 포맷을 지원하거나 신호 포맷을 변경하기 위해서 다이내믹하게 재구성될 수 있다.
Patent KR-20010087755-A (KR)
Title: A toy which moves by the signal from personal computer
Inventor: JANG EUN HO
IPC: A63H30/02
Filed: 2001-01-08
Abstract: PURPOSE: A toy moving according to a signal from a PC is provided to help the users to use the PC with amusement by supplying a toy operated variously according to the signal from the PC and to develop the emotion of the users by stimulating sensitivity. CONSTITUTION: The toy moving according to the signal from the PC includes a PC(15), the head(2), arms(3, 4), a body(5), the first, second and third LEDs(6, 7, 8) etc. A USB driver is included inside the PC(15) and the USB cable is connected with the PC(15). The head(2), arms(3, 4) and the body(5) of the toy are operated independently and a driving instrument is connected with the inside of the toy. The first, second and third LEDs(6, 7, 8) are included inside the toy and are radiated by the control order from the PC. The operating order of a USB IC and a CPU is set up in advance in order that the driving instrument and the radiating instrument are operated variously according to all kinds of control signals input from the PC. In the PC(15), the character animation(17) is operated as the toy through a monitor screen(17).
Patent KR-20010078104-A (KR)
Inventor: COZZARELLI JOSEPH
IPC: H04B1/04
Filed: 2001-01-27
Abstract: PURPOSE: Power amplifier using upstream signal information is provided to realize a power amplifier system using upstream signal information of a signal to be amplified by an amplifier to control the operation of the amplifier, thereby enabling the amplifier to operate more efficiently overall. CONSTITUTION: A typical feed-forward power amplifier architecture(10) which includes a main amplifier(12) to amplify the input signal on the main signal path(13) and a correction amplifier(14) used in reducing the distortion produced from the main amplifier(12). Feed-forward correction is routinely deployed in modern amplifiers to improve the linearity of the main amplifier(12) with various input patterns. The essence of the feed-forward correction is to isolate on a distortion cancellation path(16) the distortion generated by the main amplifier(12). To isolate the distortion on the distortion cancellation or feed forward path(16), a coupler(17) provides a version of the amplified input signal and distortion from the output of the main amplifier(12) onto a coupling path(18) to a coupler(19). A coupler(20) provides an inverse version of the input signal from the main signal path(13) to the coupler(19). The coupler(19) combines the amplified input signal and distortion from the coupling path with an inverse version of the input signal from the main signal path(13). As such, the input signals cancel and the distortion is left on the distortion cancellation path(16). The distortion is provided to the correction amplifier(14) which amplifies the distortion on the distortion cancellation path(16). A combiner(22) cancels the distortion on the main signal path(13) with the distortion on the distortion cancellation path(16) to reduce the distortion produced from the main amplifier(12). In general, as the peak power levels decrease of the signal to be amplified, the peak power levels decrease of the distortion signal to be amplified by the correction amplifier(14).
Patent KR-20010078239-A (KR)
Title: Exhaust purifying apparatus for internal combustion engine
Inventor: HARIMA KENJI
IPC: F01N13/02
Filed: 2001-02-01
Abstract: PURPOSE: To use a NOx catalyst at a temperature area of high NOx purification ratio regardless of an operation state of engine. CONSTITUTION: An exhaust passage is branched to a first passage 20 and a second passage 40 at a downstream of a catalyst 12 at the time of starting and the first passage 20 and the second passage 40 are again confluenced at an upstream of a NOx catalyst 61. An exhaust gas cooling promotion part 23 of which a cross section is circular is provided on the way of the first passage 20 to raise a heat release effect and a temperature reduction of the exhaust gas at the time when the exhaust gas flows in the first passage 20 is increased as compared with that at the time when the exhaust gas flows in the second passage 40. When an exhaust gas temperature detected by an exhaust gas temperature sensor 67 is lower than a defined value, a first exhaust switch valve 52 is totally closed and a second exhaust switch valve 54 is totally opened to flow the exhaust gas in the second passage 40. When the exhaust gas temperature is higher than the defined value, the first switch valve 52 is totally opened and the second exhaust switch valve 54 is totally closed to flow the exhaust gas in the first passage 20.