baber/WOPTO huggingface dataset:
Patent KR-20030038138-A (KR)
Title: Method of enhancement of sinter strength after reduction
Inventor: JU JIN NAM
IPC: C22B1/16
Filed: 2001-11-08
Abstract: PURPOSE: A method for improving low temperature reduction strength of sinter that is a raw material of blast furnace by coating additive on the sinter is provided. CONSTITUTION: The method comprises the steps of preparing a lithium nitrate aqueous solution by dissolving powder phase lithium nitrate (LiNO3) into water; manufacturing sinter into surface and pores of which arbitrary weight of lithium nitrate is adhered or absorbed by dipping sinter into the lithium nitrate aqueous solution; removing moisture inside grains of sinter by drying the sinter into which the lithium nitrate solution is adhered or absorbed; and checking the amount of pure lithium nitrate adhered to or absorbed into the sinter, wherein the lithium nitrate is adhered to or absorbed into the sinter in the amount of 1.4 wt.% or more of the weight of sinter.
Patent KR-20010110404-A (KR)
Title: 스케이트보드용 트럭 및 이를 이용한 스케이트보드
Inventor: JUNG JIN HWA
Filed: 2001-11-29
Abstract: 본 발명은 도로 위에서 즐길 수 있는 스케이트보드에 관한 것으로, 긴 널판지 형태의 데크와, 상기 데크의 하면 앞부분에 장착되고 전방 보드휠이 부착된 트럭과, 상기 데크의 하면 뒷부분에 장착되고 후방 보드 휠이 부착된 트럭을 포함하되, 상기 트럭은 체결판과, 상기 체결판에 고정되는 지지축과, 상기 지지축에 고정되고 양 끝부분에 보드 휠이 부착되는 휠 축과, 상기 지지축에 설치되는 캐스터를 포함하고, 상기 캐스터는 지지축에 회전 가능하게 결합되는 회전링과, 상기 회전링으로부터 일측으로 연장되는 브라켓과, 상기 브라켓의 끝부분에 설치되는 캐스터 휠을 포함함으로써, 스피드를 증대함과 동시에 방향전환을 용이하게 할 수 있는 것이다.
Patent KR-20030044237-A (KR)
Title: Method of searching a phone number in mobile phone
Inventor: BAEK YU SEONG
IPC: H04B1/38
Filed: 2001-11-29
Abstract: PURPOSE: A phone number searching method in a mobile communication terminal is provided to allow a user to promptly search a phone number by searching it corresponding to a service provider number selected according to a provider identification code as set and displaying the phone number. CONSTITUTION: A controller of a terminal discriminates a mobile communication provider with the first digits of a phone number inputted by a user, designates a provider identification code for the inputted phone number, and stores it in a memory unit of the terminal(S1). When the user confirms a specific phone number, the user selects a search key through a user interface menu(S2). The user selects an identification code corresponding to the desired phone number from service provider identification codes(S3). The controller searches a phone number corresponding to the selected identification code and displays it on an LCD screen of the terminal(S4).
Patent KR-20030049271-A (KR)
Title: a portable electrocardiograph and control method thereof
Inventor: YANG TAE HYEON
IPC: A61B5/04
Filed: 2001-12-14
Abstract: PURPOSE: A portable electrocardiograph and a control method thereof are provided to achieve improved use convenience by allowing a user to easily check his/her heart function even without a professional knowledge. CONSTITUTION: A portable electrocardiograph comprises electrodes(11,12) attached to fingers of a user; a differential amplifier unit(20) for amplifying the signals input from the electrodes; a gain control unit(30) for controlling gains of the amplified signals; a key input unit(40) for inputting user's commands; an A/D reference value providing unit(50) for providing an A/D conversion reference value; a low voltage check unit(60) for checking a low voltage state; a battery(70) for supplying power; a micro processor(80) for measuring an electrocardiographic wave and calculating and storing pulses, ST levels, QRS time and noises; a power control unit(90) for controlling supply of power; a buzzer(100); an LCD display unit(110) for displaying the operating state and measurement value; and a transmission drive unit(120) for PC communication.
Patent KR-20020005560-A (KR)
Inventor: RYU HO SUNG
IPC: H04B1/40
Filed: 2001-12-17
Abstract: PURPOSE: A method for replying to a received message in a portable phone is provided to exchange messages more simply in case that a short answer type reply is required or dialogue type messages are exchanged. CONSTITUTION: If a user selects a message mode(10) in a standby state(00), a message mode screen(11) is displayed. If the user selects "received message", the next screen(21) is displayed. Then, if the user selects "text", a received message list screen(22) comes out. If the user selects a desired message, a screen of "message contents" is displayed. In case that it is necessary to send a reply, the user selects a "reply" icon. If the "reply" icon is selected, all the process until a new message mode(33) from a receiver telephone number mode(31) and a reply telephone number mode(32) is automatically executed so that the user can directly enter a message input mode(34).
Patent KR-20030052168-A (KR)
Title: Method for metal line patterning of semiconductor device
Inventor: NAM SANG U
IPC: H01L21/28
Filed: 2001-12-20
Abstract: PURPOSE: A method for patterning a metal interconnection of a semiconductor device is provided to easily eliminate polymer by making bias RF(Radio Frequency) power have a minimum value in a plasma etching chamber through an in-situ process immediately after a process for etching a metal layer is performed and before a photoresist layer is removed. CONSTITUTION: After a lower barrier metal layer(12), a metal layer(13), an upper barrier metal layer(14) and a photoresist layer(15) are formed on an interlayer dielectric(11) on a substrate, the photoresist layer is patterned by using a mask. The lower barrier metal layer, the metal layer and the upper barrier metal layer are etched through a plasma etching process by using the photoresist layer as a mask. Plasma whose main component is a fluorine radical is generated by an in-situ process during the plasma etching so that the polymer(16) and the photoresist layer are eliminated by activation of a chemical reaction of a fluorine radical. Residual photoresist is removed by a plasma ashing process. A wet cleaning process is performed.
Patent KR-20030052852-A (KR)
Title: Shelf for refrigerator
Inventor: KIM DAE YEON
IPC: F25D25/02
Filed: 2001-12-21
Abstract: PURPOSE: A shelf of a refrigerator is provided to facilitate keeping of an article higher than the gap between shelves by installing a shelf opening and shutting plate and forming a communicating hole part. CONSTITUTION: A shelf of a refrigerator has a shelf opening and shutting plate(41) on a side of the tip of the shelf. The shelf opening and shutting plate is selectively assembled and detached. If the shelf opening and shutting plate is separated, an article with height higher than the gap between shelves is secured on a shelf(30') installed under the shelf, passing through the communicating hole part formed by separation of the shelf opening and shutting plate. A docking protrusion, docking groove(39), a support end(38), and a support protrusion are formed to one end portion of the shelf opening and shutting plate and one end portion of a shelf body plate(31) corresponding to one end portion of the shelf opening and shutting plate, to selectively assemble and detach the shelf opening and shutting plate. A shelf storage part(51) in which shelf opening and shutting plate is kept is disposed to a side wall of the inner space of a body(20). Thus, a relatively high article is easily kept on the shelf.
Patent KR-20030053349-A (KR)
Title: tension reel grip segment equipment for end mark occurrence prevention
Inventor: AHN JONG IK
IPC: B21B37/00
Filed: 2001-12-22
Abstract: PURPOSE: A tension reel grip segment apparatus is provided to improve quality of a coiled article by preventing an end mark form being formed on a surface of a strip. CONSTITUTION: A plurality of inclined guides(2) are formed at an outer peripheral portion of a sleeve(1). One inclined guide is formed with a link bar slot so as to receive a link bar(13). Three segments(6) formed at inner portions thereof with an inclined guider surround an outer portion of the sleeve(1). A lower grip segment(10) having an inclined guider is installed on the inclined guide having the link bar(13). The lower grip segment(10) is inserted into a fixing hole(12), into which an end of a cold rolled strip is inserted. An upper grip segment(15) is provided to clamp an end of the cold rolled strip. The link bar(13) is connected to the upper grip segment(15) through a special link(14).
Patent KR-20030054249-A (KR)
Title: System and method for servicing game contents using wireless internet on a portable communication terminal
Inventor: JUNG SEONG UK
IPC: H04W4/00
Filed: 2001-12-24
Abstract: PURPOSE: A game contents service system using a wireless Internet in a mobile communication terminal and a method therefor are provided to easily perform billing according to a use period by extending the use period of corresponding game contents by the update of header file information of a header portion. CONSTITUTION: If a use period of multimedia game contents downloaded through a wireless communication network expires, an MS(Mobile Station)(100) transmits a period extension request message, according to a period extension request from a user, through BTSs(Base Transceiver Systems)(102,104), and requests period extension. The MS(100) updates period extension information in a header portion of game contents data by period extension header information received from the BTSs(102,104). If the game use period extension request is received from the user, a game contents server(110) transmits a period extension header file, to be attached to the game contents data downloaded in the MS(100), to the MS(100), extends and updates use period information in the header portion of the game contents data, and extends an execution period of the multimedia game contents. An MSC(Mobile Switching Center)(106) converts the period extension request message transmitted from the MS(100) through the BTSs(102,104) into a protocol message of the game contents server(110) through an IWF(Inter Working Function)(108), and transmits the protocol message. The MSC(106) transmits the period extension header file generated in the game contents server(110) to the MS(100) through the BTSs(102,104).
Patent KR-20030054687-A (KR)
Title: Magnetic random access memory using a schottky diode
Inventor: KIM CHANG SEOK
IPC: H01L27/22
Filed: 2001-12-26
Abstract: PURPOSE: A magnetic RAM(Random Access Memory) using a Schottky diode is provided to increase the integration of device by forming the Schottky diode between an MTJ(Magnetic Tunnel Junction) cell and a bit line. CONSTITUTION: A word line(53) is provided on a semiconductor substrate(51). An MTJ cell(55), a doped poly-silicon layer(57), and a bit line(59) are sequentially layered on an upper portion of the word line(53). The MTJ cell(55) is formed by layering a fixed ferromagnetic layer, a tunnel oxide film, and a free ferromagnetic layer. A smoothed interlayer insulation film(61) is provided, which comprises a structure of the MTJ cell(55), the doped poly-silicon layer(57), and the bit line(59). A metal of the bit line(59) on an upper portion of the doped poly-silicon layer(57) or a metal layer of the top of the MTJ cell(55) is made up of a metal electrode.
Patent KR-20020055416-A (KR)
Title: Luminescent device
Inventor: SEO SATOSHI
IPC: H05B33/12
Filed: 2001-12-27
Abstract: PURPOSE: A luminescent device is provided to enhance mobility of a carrier by mitigating an energy barrier in an organic compound layer. CONSTITUTION: A luminescent device including an organic luminescent element comprises an anode(3403), a cathode(3405) and a hole transporting layer provided between the anode and the cathode, including a first compound and a second compound. The first compound is smaller in ionization potential than the second compound, and the second compound is larger in hole mobility than the first compound.
Patent KR-20030057738-A (KR)
Title: Method for channel presumption in IMT-2000 system
Inventor: LEE IK BEOM
IPC: H04B1/76
Filed: 2001-12-29
Abstract: PURPOSE: A channel estimation method in an IMT-2000 system is provided to remove effectively incorrectness of the channel estimation due to the other channel bit reception of a pilot channel, thereby promoting enhancement of performance. CONSTITUTION: When power control transmission data is received(ST11), the power control bit of the received data is discriminated(S12). Thereafter, if the result power control bit value is '-1', a code C2 is transmitted(ST13) and if the result power control bit value is '1', a code C1 is transmitted(ST14). When the transmitted code C1 is received, the first N1 number of chips in a power control sub-channel correlates with C1(ST15) and then the correlated value compares with a critical value. As the comparison result, if the correlated value is larger than the critical value, it is confirmed that '1' is transmitted to the power control sub-channel(ST17) and then the non-patterning of remnant N0-N1 number of chips(Tc) is performed as C1(ST18).
Patent KR-20010071793-A (KR)
Title: 다중화 방법과 다중화 장치 및 데이터 신호 송신 방법과데이터 신호 송신 장치
IPC: H03M13/27
Filed: 2000-05-09
Abstract: 에러 정정 능력을 최대한으로 발휘하여 데이터의 전송 품질을 향상시킨 효율이 좋은 다중화 방법과 내삽 파일럿 신호를 이용한 데이터 신호 송신 방법에 적합한 인터리빙 처리를 하는 데이터 신호 송신 방법이 제공된다. 
     다중화 방법은 입력 채널마다 입력 데이터를 부호화하여 이 부호화된 데이터를 다중화하고 상기 다중화된 데이터에 대해서 열의 랜덤화를 행하는 인터리빙 처리를 해서 데이터를 출력한다. 데이터 신호 송신 방법은 인터리빙 처리를 함에 있어서 프레임의 슬롯 수의 2배가 되는 인터리버를 이용하도록 한다.
Patent KR-20010085327-A (KR)
IPC: H04W88/16
Filed: 1999-07-23
Abstract: 예를 들어 인터넷(여기에 제한되는 것은 아님)을 포함한 하나 이상의 공중 패킷 데이터 네트워크 및 예를 들어 공중 교환 전화 네트워크(PSTN)(여기에 제한되는 것은 아님)와 같은 하나 이상의 공중 스위칭 회로 네트워크에 대하여 무선 액세스를 지원하는 통신 네트워크에 관한 것이다. 
     예를 들어, 전화(여기에 제한되는 것은 아님)와 같은 음성 액세스 유니트 및 예를 들어 개인용 컴퓨터(여기에 제한되는 것은 아님)와 같은 컴퓨팅 디바이스는 유선 인터페이스를 통하여 무선 유니트에 연결되는데, 상기 무선 유니트는 그 자신이 하나 이상의 공중 데이터 네트워크 및 하나 이상의 공중 스위칭 회로 네트워크에 공중(즉, 유선 또는 무선) 액세스를 제공한다. 
     컴퓨팅 디바이스는 패킷화된 메시지(음성 데이터 모두)를 수신할 수 있다.  음성 액세스 디바이스는 컴퓨팅 디바이스에 연결되어 있으며 패킷화된 음성 메시지로부터 변환된 음성 메시지를 수신할 수 있다. 
     컴퓨팅 디바이스와 컴퓨팅 디바이스/음성 액세스 디바이스 결합체는 각각 가입자 장치를 포함한다.  무선 액세스 네트워크는 각각의 네트워크 가입자 장치를 통하여 하나 이상의 네트워크 가입자에 대한 스위칭 회로 전송 및 패킷 데이터 전송 모두를 지원한다. 
     무선 액세스 네트워크는 예를 들어 인터넷(여기에 한정되는 것은 아님)을 포함한 공중 데이터 네트워크로부터 네트워크 가입자에게 패킷 데이터 메시지를 전송하는 프로토콜을 포함한다.  무선 액세스 네트워크는 또한 스위칭 회로 네트워크에서 네트워크 가입자에게 음성 메시지를 전송하는 프로토콜을 포함한다.
Patent KR-20010080365-A (KR)
IPC: G01R19/00
Filed: 1999-11-01
Abstract: 본 발명은 부하(134)를 통과하여 흐르는 전류를 측정하기 위한 센서에 관한 것이다.  센서는 실질적인 정전압(133)과 연결된 제 1 단자 및 부하와 연결된 제 2 단자를 구비한 파워 트랜지스터(132)를 가진다.  센서는 가변 커패시터(152)와 전압차를 샘플링할 수 있으며, 컨트롤러(160)는 전류 센서의 가변 커패시터가 파워 트랜지스터의 저항에 반비례하는 커패시턴스를 갖도록 구현된다.  이에 의해 가변 커패시터에 저장된 전하는 샘플링 스위치(151)가 열릴 때 파워 트랜지스터를 통과하는 전류에 비례하게 된다.  비교기(28)는 파워 트랜지스터를 통과하는 전류를 공지의 기준 전류와 비교하여 디지탈 출력 신호를 공급한다.  센서는 파워 트랜지스터(14), 기준 트랜지스터(24) 그리고 증폭기(28)를 포함하며, 부하를 통과하는 전류에 비례하는 전류는 갖는 신호를 기준 라인에 공급한다.
Patent KR-20010093791-A (KR)
IPC: H01L33/30
Filed: 2000-10-27
Abstract: n형 GaP층(12)과 p형 GaP층(14)과의 사이의 p-n 접합부에 질소를 도프시키고, 또한 도너 농도 및 억셉터 농도가 1×10 16 개/cm 3 보다 낮은 저 캐리어 농도층(13)을 설치함으로써 휘도를 종래보다 20% 내지 30%나 향상시킬수가 있다. 저 캐리어 농도층(13)의 도너 농도 및 억셉터 농도가 1×10 16 개/cm 3 보다 낮게 설정되면, 도너농도와 억셉터 농도의 차로서 표시되는 캐리어 농도는 필연적으로 1×10 16 개/cm 3 보다 낮게 된다. 비발광 중심으로 작용하는 도너의 농도를 1×10 16 개/cm 3 보다 낮게 설정함으로써 캐리어의 존속기간을 길게함과 동시에, 캐리어 농도를 인접하는 층(12,14)보다도 상당히 낮게 설정함으로써 전자 혹은 정공의 주입에 의한 발광효율을 향상시킬 수가 있다.
Patent KR-20010093792-A (KR)
IPC: H03D9/06
Filed: 1999-11-19
Abstract: 동질의 다층구조물을 갖는 마이크로웨브 집적회로의 형태인 이중평형 링 믹서가 제공된다. 믹서(300)는 광범위한 주파수에서 작동하나 작은 공간을 차지하는 사각동축전송라인(202, 305, 306)으로 구성되는 발룬을 이용한다. 전형적인 구성은 약 0.9 ~ 6 GHz에서 작동하며 약 0.1 ~ 10 GHz의 다른 주파수에서도 작동할 수 있다.
Patent KR-20010101085-A (KR)
Title: Compositions and Methods for the Treatment of Alzheimer's Disease, Central Nervous System Injury, and Inflammatory Diseases
IPC: A61P25/28
Filed: 1999-11-24
Abstract: The present invention relates to methods and compositions for treating Alzheimer's disease and other diseases and conditions with an inflammatory component (e.g., central nervous system injury). In particular, the present invention provides agents that regulate the production of proinflammatory and neurotoxic products involved in Alzheimer's disease and other diseases and conditions with an inflammatory component.
Patent KR-20010103720-A (KR)
IPC: G06F9/48
Filed: 1999-12-17
Abstract: 셋-탑 박스(set-top box) 환경에서 다른 트레드(thread)와 통신하기 위한 컴퓨터-실시 트레드가 제공된다.  트레드는 스택(stack), 트레드 제어 블록, 및 대기열 객체(queue object)를 포함한다.  트레드의 스택은 그 트레드에 대한 데이터 저장을 제공하고, 트레드 제어 블록은 트레드에 관련된 문맥(context) 정보를 저장하는데 사용된다.  대기열 객체는 그 트레드와 또 다른 트레드 사이에 통신을 제공하는데 사용된다.  스와프형(swap type) 검출기는 트레드가 CPU로부터 스와핑(swapping) 처리될 때 소정의 스와프 종류를 검출하도록 제공될 수 있다.  레지스터 레코더는 트레드의 검출된 스와프형을 근거로 트레드의 CPU 상태를 부분적으로 저장한다.  레지스터 레코더는 또한 수신된 인터럽트 서비스 요구를 근거로 트레드의 CPU 상태를 부분적으로 저장할 수 있다.
Patent KR-20010089588-A (KR)
IPC: G06F9/38
Filed: 2000-01-05
Abstract: 본 발명은 명령어를 실행하기 위한 방법을 제공한다. 방법은 파이프라인의 일부분의 스테이지가 준비되어 있는지 여부를 먼저 판단하지 않고 파이프라인의 일부분에서 제1 및 제2 복수의 명령어를 디스패치하고 실행하는 단계를 포함한다. 이 방법은 또한 실행 문제에 직면했는지 여부를 판단하는 단계와 제1 복수의 명령어가 실행 문제에 직면한 것을 판단한 것에 응답하여 제1 복수의 명령어를 리플레이하는 단계를 포함한다. 
     본 발명은 프로세서 파이프라인을 제공한다. 프로세서 파이프라인은 실행을 위하여 복수의 명령어를 페치하기 위한 전단부 및 이 전단부에 의하여 페치된 복수의 명령어를 실행하기 위한 후단부를 포함한다. 후단부는 명령어가 실행 문제를 갖고 있는지 여부를 판단하기 위한 회수 스테이지를 포함한다. 이 후단부는 정지가능한 것이 아니다. 프로세서 파이프라인은 또한 명령어가 실행 문제에 직면했다는 표시를 회수 스테이지로부터 명령어가 재실행될 수 있는 파이프라인의 리플레이 지점으로 전송하기 위한 채널을 포함한다.
Patent KR-20020069372-A (KR)
IPC: A61K8/37
Filed: 2000-04-20
Abstract: 아기용 와이프, 성인용 와이프, 핸드 와이프, 페이스 와이프, 화장용 와이프, 가정용 와이프, 산업용 와이프, 개인 세정용 와이프, 면 볼, 면봉 등의, 피부 건강을 증진시키는 부드러운 습윤 와이프 또는 와이프-형 제품은 천연 지방 또는 오일, 스테롤 또는 스테롤 유도체, 습윤제, 유화 계면활성제 및 물을 포함하는 수중유 에멀젼 조성물과 와이프 또는 와이프-형 제품을 합함으로써 제조할 수 있다.
Patent KR-20020021787-A (KR)
Title: 표본 신호의 보간 중간값을 결정하기 위한 방법 및 장치
IPC: G06F17/17
Filed: 2000-04-03
Abstract: 본 발명은 예컨대 디지털 이동 무선 신호와 같은 표본 신호의 보간 중간값을 결정하기 위한 방법 및 장치에 관한 것으로, 본 발명에서는 보간 중간값을 결정하기 위해 상기 신호의 3개의 공지된 표본값 (x 1 , y 1 ), (x 2 , y 2 ) 및 (x 3 , y 3 )으로부터 출발하여 2차 다항식 y = ax 2 + bx + c의 파라미터 a, b 및 c를 결정함으로써, 상기 다항식을 참조하여 중간값이 산출될 수 있다.  이 경우에 전제가 되는 것은, 상기 신호가 일정한 간격, 특히 d = 1로 규정된 간격으로 샘플링되고 공지된 평균 표본값에 표본 시점 x 2 = 0이 할당됨으로써, 적은 하드웨어 비용으로도 산출이 가능해진다.
Patent KR-20020025069-A (KR)
Title: Δ6-Acetylenase and Δ6-Desaturase from Ceratodon Purpureus
IPC: C12N15/53
Filed: 2000-06-07
Abstract: The present invention relates to a process for preparing unsaturated fatty acids and to a process for preparing triglycerides with an increased content of unsaturated fatty acids. The invention further relates to the use of DNA sequences coding for Delta6-acetylenase/Delta6-desaturases or Delta6-desaturases for producing a transgenic organism, preferably a transgenic plant or a transgenic microorganism with increased content of fatty acids, oils or lipids with Delta6 triple bonds and/or Delta6 double bonds. The invention additionally relates to an isolated nucleic acid sequence; to an expression cassette comprising a nucleic acid sequence, a vector and organisms comprising at least one nucleic acid sequence or expression cassette. The invention additionally relates to unsaturated fatty acids and triglycerides with an increased content of unsaturated fatty acids and the use thereof.
Patent KR-20020015060-A (KR)
Title: Fused imidazole compounds and remedies for diabetes mellitus
IPC: C07D473/00
Filed: 2000-06-30
Abstract: The present invention provides a preventive or therapeutic agent for diabetes mellitus and diabetic complications, which is a new type based on an adenosine A2 receptor antagonist action. That is, it provides a novel condensed imidazole compound which has an adenosine A2 receptor antagonist action, is effective for preventing or treating diabetes mellitus and diabetic complications, and is represented by the formula (I): <CHEM> (wherein R<1> represents e.g. an amino group which may be substituted with an alkyl group; R<2> represents e.g. hydrogen atom, an alkyl group, a cycloalkyl group or an alkyl group, alkenyl group or alkynyl group which may be substituted with hydrox etc.; R<3> represents e.g. an optionally substituted alkyl group, alkenyl group, alkynyl group, aryl group, heteroaryl group, pyridinone group, pyrimidinone group or piperadinone group; Ar represents e.g. an optionally substituted aryl or heteroaryl group; and Q and W are the same as or different from each other and each represents N or CH), a pharmacologically acceptable salt or hydrates thereof.
Patent KR-20030064153-A (KR)
Inventor: LEE JEONG IN
IPC: H03F3/26
Filed: 2002-01-26
Abstract: PURPOSE: A power amplifier clipping circuit for minimizing output distortion is provided to suppress a rapid change of the output waveform without adding a capacitor when the output waveform is clipped by excessive input voltage, and to match the output waveform with the original waveform after the excessive input voltage is applied. CONSTITUTION: A power amplifier clipping circuit for minimizing output distortion includes an input voltage level dividing block(410), a first to a sixth bias transistors(BTR1,BTR2 - BTR5,BTR6), a first and a second static current sources(IC1,IC2), a first differential amplifier(420), a second differential amplifier(430), a first output voltage control block(440) and a second output voltage control block(450). The input voltage level dividing block(410) generates a first and a second dividing voltages(VP1,VP2) for dividing the period belonging to the input voltage(VI). The first output voltage control block(440) connected between the output nodes applies the input voltage level to the power amplifier in response to the first and the second output signals. And, the second output voltage control block(450) connected between the positive inner power voltage and the output node applied the input voltage level to the power amplifier in response to the third and the fourth output signals.
Patent KR-20030065917-A (KR)
Inventor: KIM GO JUNG
IPC: C04B35/00
Filed: 2002-02-01
Abstract: PURPOSE: A composition emitting anions and far infrared rays constantly, applied to mattress, cushion, pillow and medicines, is provided to give beneficial effects on the human body like disease treatment and health promotion. CONSTITUTION: The far infrared emitting composition comprises 20wt.% of fluorite, 20wt.% of elvan, 15wt.% of zeolite,10wt.% of silica, 15wt.% of rare earth elements and 5wt.% of titanium. The far infrared emitting products are produced by mixing the components, heating to more than1300deg.C for melting, and forming to a capsule shape(50x10mm).
Patent KR-20030067823-A (KR)
Title: Making Method for Paste of Bump for Screen Print Method
Inventor: LEE SANG DON
IPC: H01L23/485
Filed: 2002-02-08
Abstract: PURPOSE: A method for manufacturing bump paste for a screen printing step is provided to be capable of forming an alloyed powder having uniform distribution and homogeneous a bump. CONSTITUTION: Many kinds of material are alloyed by carrying out a heat treatment for melting the materials(S110). A quenching process is carried out for increasing composite uniformity of the alloyed material(S120). The alloyed material is then transformed into solids(S130). The solids are transformed into fine alloyed powder(S140). Then, the fine alloyed power is transformed into paste(S150). Preferably, each material is melted in each furnace before the materials are alloyed in a single furnace. Preferably, the fine alloyed powder forming process includes an arc discharge step or a crushing step.
Patent KR-20030069504-A (KR)
Inventor: LEE JOONG HO
IPC: F16K15/02
Filed: 2002-02-20
Abstract: PURPOSE: A check valve for opening and closing a passage of a hot and cold water dispenser is provided to improve function of the check valve despite using the dispenser for a long time by opening and closing the water supply pipe with lifting a float on water in the check valve housing, and to reduce power consumption by preventing inflow of steam from the hot water container to the cold water container. CONSTITUTION: A check valve is installed in a water supply pipe connecting a cold water container and a hot water container of a hot and cold water dispenser, and composed of an upper cap(13), a lower cap(14), packing(15) installed in the upper cap for sealing and a float(19) having a cut portion(19a) in the outer periphery and lifting up and down in the upper and lower caps. The passage of the water supply pipe is closed by contacting the curved portion of the float to the packing with lifting up the float in filling the hot water container.