baber/WOPTO huggingface dataset:
Patent KR-20000026099-A (KR)
Title: Chip size semiconductor package and method for making the same
Inventor: LEE JONG HYUN
IPC: H01L23/48
Filed: 1998-10-17
Abstract: PURPOSE: A chip size semiconductor package and a method for making the same use a reed structure which does not wire-bonding perform about a chip pad separated from the wafer, have a good productivity, and enhance a reliability of a connection state of an external circuit. CONSTITUTION: A chip size semiconductor package forms an insulation film(15) on one side of the semiconductor chip(10), performs a die bonding on a plastic substrate(13), and forms a reed(16). The reed is electrically connected to a bonding pad of a semiconductor chip(10), and is exposed to a reed hole(14) of the plastic substrate(13). A solder ball(19) is attached under the plastic substrate(13). An external reed is formed as a reed and a solder ball which are molded by resin. Thereby, the chip size semiconductor package uses a reed structure which does not wire-bonding perform about a chip pad separated from the wafer, has a good productivity, and enhances a reliability of a connection state of an external circuit.
Patent KR-20000028517-A (KR)
Title: Method of controlling temperature of freezing chamber for refrigerator having single fan
Inventor: KIM JONG SAM
IPC: F25D11/00
Filed: 1998-10-31
Abstract: PURPOSE: A method is provided to drive a compressor according to the detected temperature from a sensor. CONSTITUTION: A temperature of a freezing chamber is controlled by the steps of: driving a compressor if the detected temperature of a freezing chamber by a sensor is higher than the off point of the sensor, or stopping the compressor; driving the compressor if the detected temperature is higher than the on point of the sensor as the compressor is not driven; and driving a ventilating fan if the temperature of a refrigerating chamber is higher than the on point of a sensor.
Patent KR-20000033599-A (KR)
Title: Galvanic power supply of buried-in-electrolyte type
Inventor: BAE JUNG HYO
IPC: H01M6/20
Filed: 1998-11-21
Abstract: PURPOSE: A galvanic power supply is provided which can be used as a semipermanent power supply of a corrosion observing apparatus, and is easy to maintain and check and can reduce the cost according to the worker and to the battery replacement. CONSTITUTION: A galvanic power supply has a power generating part including: a Mg anode (10) and a graphite cathode(20) having a relative difference as to mutual natural potential value; an insulation plate(30) where a number of holes(31) for ionic path enabling the movement of ions between the anode and the cathode are formed and which insulates the contact surface of the Mg anode and the graphite cathode; a cable tie(40) fixing the Mg anode, the graphite cathode and the insulating plate from the external; a cable(50) connected electrically to the one side of the Mg anode and the graphite cathode; and a cotton bag(70) which accommodates the above components(10,20,30,40,50) inside and a back fill(60) is accommodated in the remained space.
Patent KR-19990076548-A (KR)
Title: 초해상 기술을 이용한 마스크 패턴 검증 장치,그 방법 및그 프로그램을 기록한 매체
IPC: G03F1/84
Filed: 1998-11-27
Abstract: 마스크 패턴 검증 장치는 반도체 회로 데이타로부터 레이아웃 데이타를 생성하기 위한 반도체 회로 레이아웃부와, 반도체 회로 레이아웃부에 의해 생성된 레이아웃 데이타의 패턴을 라인폭과 스페이스폭을 더한 피치에 기초해서 검증하기 위한 초해상 대응 패턴 검증부와, 초해상 패턴 검증부에 의해 검출된 피치의 에러 개소의 광학 시뮬레이션을 행하고 광 강도를 출력하기 위한 광학 시뮬레이션부와, 광학 시뮬레이션부에 의해 출력된 광 강도에 기초해서 칸투어를 생성하여 출력하기 위한 칸투어 출력부를 포함한다.
Patent KR-20000034289-A (KR)
Title: Method for controlling local channel select mode for multi television
Inventor: KIM KEUM HO
IPC: H04N5/50
Filed: 1998-11-28
Abstract: PURPOSE: A method for controlling local channel select mode for multi television is provided to utilize the time interval during a local channel select mode by converting the mode to a video mode. CONSTITUTION: A method for controlling local channel select mode for multi television includes first thru forth steps. The multi television has a local channel select mode as well as a video(20) mode. At the first step(S1), the mode is converted to the video mode. At the second mode(S2), the local channel is selected after the mode is converted to the video mode in the first step(S1). At the third step(S3), determine whether the local channel selection is finished after the local channel is selected at the second step(S2). At the forth step(S4), whether the local channel selection is completed or not is displayed(S3).
Patent KR-20000037619-A (KR)
Title: Clock/data reproduction device in nrz digital data transmission
Inventor: SONG JAE HO
IPC: H04L7/027
Filed: 1998-12-01
Abstract: PURPOSE: A clock/data reproduction device in NRZ(Non-Return to Zero) digital data transmission is provided to extract a clock from NRZ digital data and reproduce the data to an original signal. CONSTITUTION: A clock/data reproduction device in NRZ(Non-Return to Zero) digital data transmission comprises a data retiming/phase comparison portion(1), a reference voltage generation portion(2), an addition portion(3), a filtering portion(4), and a voltage control oscillation portion(5). The data retiming/phase comparison portion compares input data and a phase of a reproduced clock and outputs a phase comparison voltage signal. The reference voltage generation portion generates a predetermined reference voltage. The addition portion adds the phase comparison voltage signal to the predetermined reference voltage. The filtering portion filters a signal form the addition portion. The voltage control oscillation portion generates the reproduced clock.
Patent KR-20000038988-A (KR)
Title: Method for transmitting data
Inventor: KIM YOUNG HO
IPC: H04L12/433
Filed: 1998-12-10
Abstract: PURPOSE: A method for transmitting data is provided to perform easily a data transmission process and improve an efficiency of data transmission by using a data buffer larger than a size of a received frame. CONSTITUTION: A method for transmitting data comprises the following steps. A data buffer larger than a size of a received frame is prepared to receive a frame transmitted from arbitrary communication equipment. One frame is stored in the data buffer. The frame stored in the data buffer is transmitted. In the method, the data transmission is performed easily without an additional software since one frame is stored one transmission buffer by setting up the size of the transmission data buffer as maximum 1 frame.
Patent KR-20000039199-A (KR)
Title: X-line mask for liga process
Inventor: HONG SEONG JE
IPC: H01L21/027
Filed: 1998-12-11
Abstract: PURPOSE: An X-line mask for a LIGA process is provided to improve the productivity of the X-line mask by enlarging the exposure area of a membrane. CONSTITUTION: An X-line mask comprises a substrate(10). A first membrane(12) made of nitride silicon having a superior X-line transmitting feature is formed on the substrate(10). A second membrane(14) made of a metal is formed on the first membrane(12) to improve the durability of the first membrane(12). An absorbing member(30) for absorbing the X-line having a predetermined shape is patterned on the second membrane(14). A window is installed at a rear side of the substrate(10). The window is formed by removing some part of the rear portion of the substrate(10) so as to define the area to be exposed.
Patent KR-20000039514-A (KR)
Title: Vacuum chuck of semiconductor device
Inventor: HWANG SEONG JUN
IPC: H01L21/68
Filed: 1998-12-14
Abstract: PURPOSE: A vacuum chuck of a semiconductor device is provided to prevent a wafer from breaking down by uniformly distributing vacuum holes over the vacuum chuck. CONSTITUTION: A vacuum chuck(20) is used for holding and rotating a wafer. The vacuum chuck comprises first to fifth circular boundaries(26a-26e) which are sequentially formed about a center hole(22) which is formed at a center of the vacuum chuck(20). A plurality of crevices(24) are formed at the first, second and fourth circular boundaries(26a,26b,26d,26e). A vacuum pressure is supplied into the vacuum chuck(20) through the crevices(24). Four inner vacuum holes(22) are positioned in the third boundary(26c). The inner vacuum holes(22) are symmetrically disposed. Four outer vacuum holes(22) are positioned on an area between the third circular boundary(22c) and the fifth circular boundary(22e).
Patent KR-20000041612-A (KR)
Title: Method of controlling traction control system
Inventor: KU BON GYEONG
IPC: B60T8/00
Filed: 1998-12-23
Abstract: PURPOSE: A method of controlling a traction control system is provided to prevent the disability in action of a traction control system by alarming the abnormality of a brake lamp. CONSTITUTION: A method of controlling a traction control system comprises the steps of: alarming the abnormality of a brake lamp signal by operating a key switch; deciding the abnormality and error of the brake lamp signal; increasing error counter if the signal is in error; deciding if the value of the error count is higher than reference value; alarming if the value is higher than the reference one and saving the disorder code in a memory; and saving the value of the error counter in the memory in turning off power. Therefore, the method informs a driver of the disability in action of a traction control system with the abnormal brake lamp signal in the early time to enhance reliability of the equipment.
Patent KR-20000041707-A (KR)
Title: Method for manufacturing hyper-eutectic al-si forging alloy excellent in abrasion resistance and having small coefficient of thermal expansion and use of the same
Inventor: MUN IN GI
IPC: C22C21/02
Filed: 1998-12-23
Abstract: PURPOSE: A method of manufacturing a hyper-eutectic Al-Si forging alloy is provided to enhance abrasion resistance and a coefficient of thermal expansion by modifying the weak point of a hyper-eutectic Al-Si alloy. CONSTITUTION: An alloy consists of 9.0-11.0wt% of Si, 1.5-2.0wt% of Cu, 0.5-1.3wt% of Mg, 0.1-0.3wt% of Mn, 0.3-0.5wt% of Ce, not more than 0.3wt% of each Zn and Fe, not more than 0.2wt% of incidental impurities such as Cr, Zr and Ti and the rest of aluminium. A molten metal having the same composition is obtained. The molten metal is mixed with 0.02-0.03% of an Al-Ti-B group compound and 0.7-1.0% of mischmetal. After that, a billet is manufactured from a DC(direct chill) caster and processed at a temperature of 500-520°C for 2-5 hours. The obtained billet is heated at a temperature of 460-480°C for 0.5-2 hours and extruded to have reduction rate of a sectional area over 4.
Patent KR-20000042833-A (KR)
Title: Method for forming metal line of semiconductor device
Inventor: KIM BYUNG YEUP
IPC: H01L21/28
Filed: 1998-12-28
Abstract: PURPOSE: A method for forming a metal line of a semiconductor device is provided which can improve the reliability and makes the patterning of the metal line easy by preventing the lowering of flatness of the surface of the metal line layer due to the projection of a metal crystal. CONSTITUTION: A method for forming a metal line comprises the processes of: forming a contact hole(35) revealing a semiconductor substrate(31) by forming and patterning an inter level insulation layer(33) on the semiconductor substrate; forming a first line layer(39) on the inter level insulation layer and on the contact hole with a MOCVD(Metal Organic Chemical Vapor Deposition) method; forming a second line layer(41) on the first line layer with a rapid deposition rate by a sputtering method; forming a third line layer(43) on the second line layer with a slow deposition rate by a sputtering method, and forming a metal line(45) by patterning the first, second and third line layer. Therefore, because the surface is flat, the diffused reflection of light during patterning the first, second and third line layer to form the metal line is prevented, and thus the lowering of the reliability of the metal line by electromigration can be prevented.
Patent KR-19990028951-A (KR)
Title: 경질재료의 성형 방법
IPC: B21D19/08
Filed: 1996-07-15
Abstract: 본 발명은 비교적 경질의 재료를 성형시키는 방법에 관한 것으로, 비교적 경질재료로 된 스트립(10)상에 성형동작을 수행시키기 위한 도구를 제공하는 것을 포함한다. 도구는 고속 각인·성형기계(70)에 결합된 취합다이(24) 및 성형도구(22)를 포함한다. 도구와 기계는 성형재료의 응력이완 시간상수보다 작은 시간주기 안에서 성형동작이 수행되도록 배열된다.
Patent KR-19990028994-A (KR)
Title: 코인 식별장치
IPC: G07D5/08
Filed: 1996-04-02
Abstract: 코인의 직경 관련 특성을 결정하기 위해 적어도 2개의 기준 위치(U, D)가 식별되는 코인 식별장치(1)가 제공된다, 테스팅 스테이션으로의 이동을 감소시키기 위해, 제1 기준 위치(U)를 지나는 코인의 트레일링 포인트(trailing point)의 타이밍이 직경 관련 특성을 결정하기 위해 사용된다, 기준 위치와 연합되는 광학 센서(6, 8, 9, 11, 30, 32), 유도 센서(50, 51, 52), 및 압전 센서(55)가 기술된다. 코인 식별장치의 유도 센서(12)는 기다란 코일을 구비하는 데, 이것은 사용시, 그 경로의 폭 전체에 걸쳐 자기장이 실질적으로 일정하게끔 배설된다. 이러한 타입의 코일의 사용은 코일들 주위를 감싼다는 데 그 이점을 갖지만, 코인 경로가 보다 얕아지고 또 오픈되게 한다. 코인 식별장치(1)는 코인 경로(2)의 후벽이 전후로 이동하여서 코인 경로(2)의 깊이가 조절될 수 있도록 기술 된다. 실시예에 있어서, 캠(63)은 그 경로의 깊이를 설정하기 위해 코인 경로(2)의 후벽(62)에 대항해서 지지되어 있다.
Patent KR-19990045732-A (KR)
IPC: C07D213/55
Filed: 1996-09-09
Abstract: PCT No. PCT/EP96/03949 Sec. 371 Date Mar. 13, 1998 Sec. 102(e) Date Mar. 13, 1998 PCT Filed Sep. 9, 1996 PCT Pub. No. WO97/11059 PCT Pub. Date Mar. 27, 1997Substituted 2-phenylpyridines I and their salts where n=0, 1; R1=halogen, C1-C4-haloalkyl; R2 and R3=H, halogen; R4=CN, halogen; R5=-CO-O-(C1-C4-alkylene)-CO-OR6, -CO-O-(C1-C4-alkylene)-CO-N(R7)R8, -O-(C1-C4-alkylene)-CO-O-(C1-C4-alkylene)-CO-OR6, -O-(C1-C4-alkylene)-CO-O-(C1-C4-alkylene)-CO-N(R7) R8, -S-(C1-C4-alkylene)-CO-O-(C1-C4-alkylene)-CO-OR6 or -S-(C1-C4-alkylene)-CO-O-(C1-C4-alkylene)-CO-N(R7)R8; R6=H, C1-C4-alkyl, C1-C4-alkoxy-C1-C4-alkyl, C2-C4-alkenyl, C3-C4-alkynyl; R7=H, C1-C4-alkyl, carboxy-C1-C4-alkyl, C1-C4-alkoxycarbonyl-C1-C4-alkyl; R8=H or C1-C4-alkyl, are used as herbicides and for the desiccation/defoliation of plants.
Patent KR-19990064187-A (KR)
Title: 안과질환 치료용 카르보스티릴 유도체
IPC: A61K31/4704
Filed: 1996-10-01
Abstract: 본 발명은 하기 화학식 I 로 나타내어지는 카르보스티릴 유도체 또는 그의 염: 
     [화학식 I] 
     
       
     
     [식중, R 은 할로겐 원자이고, 카르보스티릴 뼈대내 식 측쇄의 치환위치는 3- 또는 4-위치이고, 및 카르보스티릴 뼈대내 3- 및 4-위치간의 탄소-탄소 결합은 단일결합 또는 이중결합이다], 
     을 유효성분으로 함유하는 안과질환 치료제에 관한 것이다.
Patent KR-19990082142-A (KR)
Title: 유압식 브레이크용 냉간 가공 피스톤
IPC: F16J1/00
Filed: 1997-02-03
Abstract: 디프 드로잉과 같은 냉간 가공에 의해 제조되는 유압식 브레이크의 작동용 피스톤은 횡단면이 브레이크 라이닝 상에 피스톤(1)을 당접시키기 위한 소정의 당접면(A)보다 작은 비교적 얇은 외부벽(4)을 구비한다.  본 발명은 보울 형상 피스톤(1)의 연부(3)를 내측으로 로울러로 버니싱한 후에 상기 연부의 전면측으로부터 상기 연부를 가공하여 확대된 당접면(A)이 저비용의 방법으로 형성되게 된다.
Patent KR-20000018266-A (KR)
Title: Retroreflective sheetings with glittering cube edge
Inventor: SHUSTAR GININ M
IPC: G02B5/124
Filed: 1998-10-30
Abstract: PURPOSE: A retro reflective sheeting with a glittering cube edge is provided to enhance the revelation of sheeting during the day. CONSTITUTION: A retro reflective sheeting with a glittering cube edge is characterized by a capacity reflecting a ray of light incident toward a light source. The retro reflective sheeting comprises an arrangement of elements(30) having a cube edge limited by parallel grooves cross three sets. The elements having the cube edge are arranged by glittering sheeting when they are exposed by the light. The glittering is a form of a distinguished light point when it is observed by the naked eyes. In the arrangement. two face angle is varied between cube faces adjacent to the elements having cube edges adjacent to each grooves.
Patent KR-20000016066-A (KR)
Title: Soundproof layer having integral rib structure
Inventor: CAMBEL MICHAEL T
IPC: B60R13/08
Filed: 1997-07-25
Abstract: PURPOSE: A soundproof layer, particularly a compressed rib integrally molded on a foothold area of a vehicle and a dash mat having an integrally formed dead pedal is provided. CONSTITUTION: A soundproof layer is composed of:a noise block(10) having a blocking wall including a floor area(23) and a fire wall area(25) extended between a wheel hole area(41) and a drive train area(42); a mass layer(12) included in the noise block to cover at least a part of the blocking wall and having an inner surface(16) toward the blocking wall as an outer rib(52) is projected; a first set rib(48) connected by crossing with a second set rib(50); and the first and the second set rib placed in a siege area.
Patent KR-19990068242-A (KR)
Title: 액정표시장치
IPC: G02F1/1368
Filed: 1999-01-20
Abstract: 본 발명은, 영상신호가 복수의 비디오 버스에 의해 아날로그 스위치군으로 공급되는 경우에 생기는 힘줄모양의 표시얼룩 등의 노이즈를 해소하여 양호한 표시화질을 얻는 것이 가능한 구동회로내장형 액정표시장치를 제공한다. 
     이를 위해 본 발명은, 소정의 기준전위에 대해 정극성의 영상신호가 입력되는 비디오 버스군(SVp1∼6)과 부극성의 영상신호가 입력되는 비디오 버스군(SVn1∼ 6)의 각각의 아날로그 스위치(SWp11∼22,SWn11∼22)의 접속점을 그 배열이 비디오 버스의 연재방향에 관해 거의 대칭형상으로 되도록 배치하도록 하여 신호선 구동회로(200) 내부에서의 샘플링 스위치와 비디오 버스라인의 접속점의 배열을 개량한다.  각각의 스위치쌍에 속하는 접속배선 길이의 합계, 나아가서는 그 저항치는 거의 같으므로, 신호선 전위의 시프트량의 실효치를 신호선 사이에서 거의 균일화할 수 있다.
Patent KR-20000056758-A (KR)
Inventor: KANG KWANG OK
IPC: F24C15/20
Filed: 1999-02-25
Abstract: PURPOSE: A soot removing apparatus for a gas oven range is provided to accomplish an amenity in a kitchen while allowing the soot generated during a cooking process to be removed in advance to being discharged outside. CONSTITUTION: A soot removing apparatus for a gas oven range which has a discharge channel(7) arranged in the rear of an oven compartment(2) and a broiler compartment(3) so as to discharge soot produced from a process of cooking food stuff, both compartments(2, 3) being installed within a main body(1) of the gas oven range, and a discharge fan(8) arranged in the discharge channel for a forced discharge of soot toward outside, the soot removing apparatus comprising a soot removing member arranged in the discharge channel and which operates by a high voltage from an ignition transformer(6) so as to remove soot produced from a process of cooking food stuff.
Patent KR-20000059723-A (KR)
Inventor: PARK SEONG GI
IPC: H02K5/24
Filed: 1999-03-08
Abstract: PURPOSE: A noise preventive motor is provided to reduce contact noise between a brush and a brush holder by modifying the structure of the brush holder. CONSTITUTION: A brush holder(130) has at least one through-holes(136a,136b) to give tension to a position adjacent to the central area of the upper panel(132a) and the lower panel(132b) of the brush holder(130) so that a brush can be flexibly fixed. Projections (134a,134b) are projected in the reciprocating direction of the brush(110) to the upper panel(132a) and the lower panel(132b) of the brush holder(130) in the direction of a rotor(105). The brush holer(130) has the through-holes(136a,136b) and projections (134a,134b) which can have tensioning function so that contact noise can be absorbed or reduced.
Patent KR-20000059977-A (KR)
Inventor: KIM HAK SU
IPC: A63B69/36
Filed: 1999-03-10
Abstract: PURPOSE: A monitoring system for correcting golf swing form is provided, to achieve golf swing form and skill by using video equipment of low cost and easy method which are suitable for a novice and a golf lover. CONSTITUTION: A monitoring system for correcting golf swing form is characterized by comprising the following:(i) a CCD camera(charge coupled device) which transforms an image into an image signal(NTSC); (ii) an analog/digital transformer(22) which transforms an image signal from CCD camera into a digital signal; (iii) a digital switch section(26) which samples digital signals from analog/ digital transformer(22); (iv) a memory section(28) which stores image signal data sampled in the digital switch section(26); (v) a synchronizing signal separation section(24) which outputs by separating synchronizing signal from CCD camera(20); (vi) a color monitor(34) which displays visible image by composing composite signal from digital/analog transformer(30) and image signal from the synchronizing signal separation section(24); (vii) a remote control(36) which sends wireless infrared signal by using control signal desired by user; (viii) a sound sensing device(38) which senses swing sound of a golf ball and transforms into electric signal; and (ix) a microprocessor(32) which controls the digital switch section(26), the memory section(28),the digital/analog transformer(30).
Patent KR-19990082874-A (KR)
Title: 다중 레벨 변조된 신호의 반복적 디코딩 방법 및 장치
IPC: H04L27/38
Filed: 1999-04-02
Abstract: 본 발명은, 채널 디코더의 소프트 출력 정보가 피드백되어, 추가 반복 디코딩 단계에 의한 디코딩 결과를 개선시키기 위해 전용 소프트 디매핑 소자에 의해 이용되는, 다중 레벨 변조된 신호를 반복적으로 디코딩하는 방법 및 장치를 포함한다.  수신기는, 디매핑된 신호를 발생시키는 디매퍼, 디매핑되고 디인터리브된 신호를 발생시키는 비트 디인터리버 및, 디코딩된 신호를 나타내는 소프트 신뢰도 값을 발생시키는 디코더를 포함한다.  이들 소프트 신뢰도 값은 비트 인터리브되고, 디코딩 처리의 추가 반복을 위해 연역적(a priori) 지식으로서 디매퍼에 피드백된다.
Patent KR-20000065847-A (KR)
Inventor: OH TAE HWAN
IPC: G08B25/10
Filed: 1999-04-09
Abstract: PURPOSE: A system for tracking a stolen vehicle position is provided to easily search a stolen vehicle by using a position tracking server after receiving a stolen vehicle generation statement. CONSTITUTION: A system for tracking a stolen vehicle position includes a terminal(20) having GPS receiver(21) mounted to a predetermined position of a vehicle. A wireless network is made between the terminal(20) and a position tracking server. The terminal includes a microprocessor(23) for receiving a data of the GPS receiver through a communication port(22), and a wireless modem(24) for a radio communication between the microprocessor and the position tracking server. The terminal is hidden into a predetermined position of the vehicle. Thereby, a stolen vehicle can be easily detected.
Patent KR-20000067618-A (KR)
Inventor: KO JONG HO
IPC: C05D1/02
Filed: 1999-04-30
Abstract: PURPOSE: A composition for plant growth promotion and preserve-improvement is provided, which promotes growth of plants; improves disease-tolerance; shows antagonist action to plant disease-causing germ; controls buffer action of acidic soil in a soil and absorption/taking off of mineral; and improves preservative property after harvest. CONSTITUTION: A process for the preparation of composition for plant growth promotion and preserve-improvement comprises of: dissolving potassium silicate compound 3.7mole, sodium silicate compound 0.4mole, potassium carbonate compound 3.8mole, sodium carbonate compound 0.4mole, potassium chloride 0.5mole, and deoxidized saccharide 0.6mole in distilled water 1L(maintained at 80°C) in order; cooling the solution by 4-6°C per minute while shaking to be mixed with air till 20°C; leaving at room temperature for about 30hrs, and stabilizing to get gel-state solution; and diluting with distilled water for 15times to get sol-state alkalito ionized mineral composition for plant growth promotion and preserve-improvement.
Patent KR-20000073852-A (KR)
Inventor: KIM SIN UK
IPC: H03G3/20
Filed: 1999-05-14
Abstract: PURPOSE: A high frequency power amplifier having linear amplification gain is provided to obtain the accurate amplification output, by removing the error optimally regardless of the amplification characteristic variation of error amplification. CONSTITUTION: A high frequency power amplifier having linear amplification gain comprises a high frequency amplifier(50), an error extracting controller(60), an error correction section(70) and an error correction controller(80). The high frequency amplifier(50) receives a high frequency signal(RF2), modulates/amplifies the phase and the amplitude according to an amplification control signal(CT3) and generates an error signal(ER2) using the amplification signal(AMP2) and the delayed signal by the original high frequency signal. The error extracting controller(60) extracts the constant value from the error signal(ER2), generates the amplification control signal(CT3) according to the value and outputs it to the high frequency amplifier(50). The error correction section(70) amplifies the error signal(ER2) according to a correction volume control signal(CT4) and corrects the error of the amplification signal(AMP2) using an error amplification signal(ERAMP2). The error correction controller(80) receives the ingredient of the extracted error signal from the error extracting controller(60), extracts the constant value from the error amplification signal(ERAMP2), generates the correction volume control signal(CT4) according to the value and outputs it to the error correction section(70).