baber/WOPTO huggingface dataset:
Patent KR-19990079169-A (KR)
Title: 다이 본딩 장치
IPC: H01L21/00
Filed: 1998-04-02
Abstract: 본 발명은 다이 본딩장치에 관한 것으로, 도선이 일체인 리드 프레임에 기억소자의 반도체 칩인 웨이퍼를 다이 본딩할 때 LOC 다이 본딩의 공정과 노말 다이 본딩의 공정을 간단한 제어의 기능만 조절한 후 선택적으로 수행할 수 있도록 하여 장비의 사용효율은 물론, 장비의 원가절감에 크게 기여하도록 한 것이다.
Patent KR-19990080719-A (KR)
Title: 모드별 포커스 전압 조절회로
IPC: H04N3/227
Filed: 1998-04-21
Abstract: 본 발명은 영상표시기기의 포커스(focus) 전압 조절회로에 있어서, 특히 모드(mode)변환시 포커스 전압을 기준모드의 설정레벨과 동일하게 가변시켜 주도록 하여 화면상의 포커스전압 분포를 적절하게 하기 위한 모드별 포커스 전압 조절회로에 관한 것이다. 
     종래에는 포커스 전압 레벨이 한 개의 모드에 의해 세팅되어 있으므로, 모드 변환시에 포커스 전압의 변화로 인해 화면상의 포커스가 적절하지 못하여 화면품질을 저하시키는 문제가 있다. 
     본 발명은 상기한 문제를 해결하도록 모드변환시 포커스 전압을 감지하고, 이 감지되는 포커스전압을 설정된 모드별 최적의 기준레벨과 비교하여 수평/수직 파라볼라 파형의 진폭을 조절하도록 하므로서, 모드변환시에도 항상 최적의 포커스 전압이 화면상에 분포되도록 하여 화면품질을 향상시킬수 있도록 한 것이다.
Patent KR-19990085076-A (KR)
Title: 다공성 유색 투수 콘크리트 및 그 포장구조
IPC: C04B14/06
Filed: 1998-05-13
Abstract: 본 발명은 일정 크기의 투수간격을 계속적으로 유지하여 장기간의 투수안정성을 도모함과 아울러 양호한 기계적 강도, 표면평탄도 및 다양하고 선명한 색상을 나타낼 수 있는 다공성 유색 투수콘크리트 및 상기 콘크리트를 이용하여 시공한 포장구조에 관한 것으로서, 본 발명에 따르면 2.36∼9.5㎜의 연속 입도 굵은 골재 1,520∼2,280㎏/㎥, 물 110∼140㎏/㎥, 시멘트 280∼350㎏/㎥, 안료 10∼22㎏/㎥을 포함하는 시멘트 콘크리트 혼합물을 혼련하거나 또는 혼련한 후 경화하여 얻어지는 다공성 유색 투수 콘크리트 및 상기 다공성 콘크리트를 이용하여 시공한 포장구조가 제공된다.
Patent KR-20000003454-A (KR)
Title: Method of fabricating semiconductor device using high density plasma oxide film as interfacial insulation film
Inventor: SON HYUN CHUL
IPC: H01L21/205
Filed: 1998-06-29
Abstract: PURPOSE: The method prevents Ar gas contained in a High Density Plasma(HDP) oxide film by a high temperature process from degassing into an open aperture when burying a conduction film in the open aperture formed through the HDP oxide film. CONSTITUTION: The method improves the burying characteristics in depositing a conduction film such as an aluminum film by covering the side wall part of a contact hole with a barrier insulation spacer such as a silicon nitride film(12) and a silicon oxide film preventing Ar from degassing into the contact hole, after forming the contact hole(or via hole) after depositing a high density plasma(HDP) oxide film(11).
Patent KR-20000004248-A (KR)
Title: Word line bootstrap circuit
Inventor: PARK SANG BEOM
IPC: G11C11/34
Filed: 1998-06-30
Abstract: PURPOSE: A word line bootstrap circuit is provided to prevent an increase of a word line voltage owing a high voltage by supplying a high voltage obtained by a word line bootstrapping after precharging a selected word line by a row decoder with the high voltage. CONSTITUTION: The word line bootstrap circuit comprises: a first NMOS transistor (N21) receiving a power supply voltage(Vcc) and connected between an input terminal(X11) receiving data outputted from a row decoder(11) and a first node(K11); a second NMOS transistor(N22) receiving a voltage of the first node(K11) and connected between a high voltage supply(Vpp) and an output terminal(K13); an inverter(I12) connected between the input terminal(X11) receiving the data from the row decoder(11) and a second node(K14); a third NMOS transistor(N23) receiving a voltage of the second node(K14) and the output terminal(K13) and a ground terminal(Vss); and an NMOS transistor(N24) receiving the data from the row decoder(11) and connected between the high voltage supply(Vpp) and the output terminal(K13).
Patent KR-20000009027-A (KR)
Title: Test tray transfer apparatus in process chamber for semiconductor device inspection facility
Inventor: IN HAE JIN
IPC: H01L21/66
Filed: 1998-07-15
Abstract: PURPOSE: The apparatus can transfer a test tray safely till the fixed temperature using a step transfer apparatus(100) driven by a cylinder(18) and a test tray holder(120). CONSTITUTION: The apparatus transfer the test tray where a semiconductor device is loaded to preheat/cool the semiconductor device in the process chamber before inspecting the semiconductor device. The apparatus includes; the step transfer apparatus to transfer the test tray vertically in the process chamber; and the tray holder which receives the test tray from the step transfer apparatus and supports the test tray and installs the test tray in the step transfer apparatus again. The cylinder for pin rotation of the step transfer apparatus generates a straight line kinetic energy, and an operation block(110), a link block(114), a link pin and a combining pin convert the straight kinetic energy to a rotation kinetic energy, and an axis(102) of the step transfer apparatus rotates by receiving the straight kinetic energy. The axis of the step transfer apparatus goes up and down by a step up/down cylinder.
Patent KR-20000009915-A (KR)
Title: Liquid crystal display panel
Inventor: HUH JAE HO
IPC: G02F1/133
Filed: 1998-07-29
Abstract: PURPOSE: Solve the problem of metal wire corrosion from the board to the display area in the chip on glass method of the operation integrated circuits in a liquid-crystal display panel. CONSTITUTION: For the liquid-crystal display panel with a thin film transistor board (100) with a thin film transistor array and a color filter board (200) on the other side, a protection screen (102) is used on the buffer metal layer (600) with an insulation screen (101) in-between on both ends of the gate line (300) and the data line formed in each horizontal and vertical direction on the thin screen transistor board (100). The buffer metal protection layer solves the problem of metal wire corrosion from the short circuit between the gate line (300) and the data line sides and between the color filter board (200) and the common electrode.
Patent KR-20000010308-A (KR)
Title: Source driving apparatus of thin film transistor liquid crystal display
Inventor: KIM HUI CHEOL
IPC: G09G3/36
Filed: 1998-07-31
Abstract: PURPOSE: A source driving apparatus of thin film transistor(TFT) liquid crystal display(LCD) is provided to improve stability of amplify circuit and to reduce consuming current by using many bias voltage. CONSTITUTION: The source driving apparatus comprises a bias signal generator outputting correspond to a control signal selectively one bias voltage among a predetermined number of bias voltages formed by using a first standard voltage, a buffer for buffering input voltage by biasing with an outputting bias voltage from the bias signal generator. The source driving apparatus can control the bias voltage by using a voltage scaling method and solve problems caused by excess or small of consuming current.
Patent KR-20000013508-A (KR)
Title: Cell array division of nor type flash memory device
Inventor: JO MYEONG GWAN
IPC: H01L27/115
Filed: 1998-08-10
Abstract: PURPOSE: A cell array division of NOR type flash memory device is provided to reduce a resistance of board and a voltage drop between a cell and a board ground contact and suppress drain turn-on of unselected cell and improve program characteristics of selected cell. CONSTITUTION: The cell array division of NOR type flash memory device comprises a plurality of matrix type cells, a plurality of word lines, a plurality of bit lines, a common source line, and a board pickup area. In the cell array division of NOR type flash memory device, the word lines and bit lines select cell in the matrix type cells. The common source line is located between a pair of word line and adjacent a pair of word line. The board pickup area forces a bias to the plurality of cells and adjacent area.
Patent KR-20000020773-A (KR)
Title: Method for forming overlay mark using mask with frame in frame mesa structure
Inventor: HONG SEONG EUN
IPC: H01L21/027
Filed: 1998-09-23
Abstract: PURPOSE: A method for overlay registration mark using mask with frame in frame mesa structure is provided to easily obtain the mark profile for gauging the overlay without additional exposing process. CONSTITUTION: A method for forming overlay mark using mask with frame in frame mesa structure comprises a step of forming a metal contact layer on prescribed bottom film, and a step of stacking a polysilicon layer on the metal contact layer. The thickness of the polysilicon layer is 400angstrom or more. The bottom film consists of gate lines, bit lines, an element isolation layer or cells. The method further comprises a step of exposing the polysilicon layer.
Patent KR-20000021468-A (KR)
Title: Production method of plant tissue containing natural anthocyanin by using whitened plant
Inventor: JO KWANG YEON
IPC: A01H4/00
Filed: 1998-09-29
Abstract: PURPOSE: A production method of plant tissue containing anthocyanin is provided which doesn't need aseptic condition, spends less time, can produce the plant tissue all around the year, and is economical. CONSTITUTION: Whitened fragment of plant tissue which is obtained by suppressing or destructing chlorophyl with whitening inducer is floated to culture in the solution containing sugar with the light of 3,000-10,000 lux at 24-32 deg.C for 2-4 days to produce the tissue containing a lot of anthocyanin. The plant for producing anthocynin can be whitened maize, sorghum, johnsongrass, millet, buckwheat, amaranthus, sesame and cockscomb. The sugar can be fructose, sucrose and glucose, and the concentration of the sugar is 0.25-5%. One day before the plant tissue is fragmented, the tissue is treated at 14-22 deg.C.
Patent KR-19990076520-A (KR)
Title: 검출부의 교정방법 및 시스템과 연결된 발전장치ㅛ
IPC: G01D3/02
Filed: 1998-10-14
Abstract: 시스템과 연결된 발전장치에 조립되는 기판에 설치되고, 검출수단에 의하여 검출대상 또는 검출대상의 양을 검출하는 검출부의 교정방법으로서, 상기 기판을 상기 시스템과 연결된 발전장치에 조립하기전에, 상기 검출부의 검출대상의 기준량을 상기 검출부에 의하여 측정하는 측정단계, 상기 측정단계로 측정한 기준량에 대한 오차와 상기 기준량중 적어도 한쪽을 상기 측정결과에 관련시켜 기억하는 기억단계, 및 상기 기판을 상기 시스템과 연결된 발전장치에 조립한후에 상기 기억단계에 의하여 상기 측정결과에 관련시켜 기억된 상기 오차 및 상기 기준량중 적어도 한쪽에 의거하여 상기 검출부의 측정결과를 출력하는 출력단계를 구비한 검출부의 교정방법에 관한 것이다.
Patent KR-20000026457-A (KR)
Title: Lead on chip package
Inventor: KIM SEUNG WOO
IPC: H01L23/28
Filed: 1998-10-20
Abstract: PURPOSE: An LOC(lead on chip) package is provided to enhance reliability by reducing overall thickness by reducing the thickness of bonding members, and to reduce costs by using cheap liquid bond. CONSTITUTION: An LOC package comprises a semiconductor chip(10) having bonding pads(16) arranged along the center of its surface in prescribed gap; inner leads(14) opposing to the bonding pads; conductive wires(18) connecting the bonding pads and the inner leads; bonding members(20); and a mold(24). The inner leads(14) are arranged along the edge of the chip. The side of the chip and the surfaces of the inner leads contacted to the side are bonded by the bonding members. The chip, the inner leads and the wires are molded by the mold(24).
Patent KR-20000027919-A (KR)
Title: Multi-resolution video device
Inventor: JEONG YEON JEONG
IPC: H04N21/433
Filed: 1998-10-29
Abstract: PURPOSE: A multi-resolution video device is disclosed to enhance a video data display by effectively providing suitable video data according to a variety of display devices. CONSTITUTION: A multi-resolution video device includes a disk(40) for storing video data, a video data input part(10) for receiving the video data, and a video output part(70) for outputting the video data. The video data output from the video data input part(70) is converted into a multi-resolution video data by a multi-resolution video encoding part(20). The multi-resolution data converted by the multi-resolution video encoding part(20) is stored in the disk(40) by a multi-resolution video data storing part(30). The video data stored in the disk is read as a suitable multi-resolution video data by a video access part(50). The suitable multi-resolution video data output from the video access part(50) is decoded and outputted to the video output part(70) by a video decoding part(60).
Patent KR-19990083657-A (KR)
Title: Secs-i과 hsms 변환방법
Filed: 1998-10-30
Abstract: 본 발명은 SEMI(Semiconductor Equipment and Material International)의 SECS-I 프로토콜과 HSMS 프로토콜을 상호 변환하는 변환방법에 관한 것이다. 본 발명은 RS-232C를 통해 들어온 SECS-I메시지를 HSMS메시지로 변환하여 TCP/IP를 통해 출력하거나, 거꾸로, TCP/IP를 통해 들어온 HSMS메시지를 SECS-I메시지로 변환하여 RS-232C를 통해 출력하는 장치에 적용되는 SECS-I/HSMS변환방법으로서, RS-232C를 통해 외부로부터 SECS메시지가 들어왔는지 확인하는 단계, SECS메시지가 들어왔으면 SECS메시지를 HSMS메시지로 변환하여 TCP/IP 선로를 통해 출력하는 단계, SECS메시지가 들어오지 않았으면 외부로 내보낼 SECS메시지가 있는지 확인하여 외부로 내보낼 SECS메시지가 있으면 RS-232C를 통해 이 메시지를 출력하고, 외부로 내보낼 SECS메시지가 없으면 TCP/IP 선로를 통해 외부로부터 HSMS메시지가 들어왔는지 확인하는 단계, HSMS메시지가 들어왔으면 HSMS메시지를 SECS메시지로 변환하여 RS-232C를 통해 출력하는 단계, HSMS메시지가 들어오지 않았으면 외부로 내보낼 HSMS메시지가 있는지 확인하여 외부로 내보낼 HSMS메시지가 있으면 TCP/IP 선로를 통해 외부로 HSMS메시지를 내보내고, 외부로 내보낼 HSMS메시지가 없으면 다시 처음 단계로 되돌아가는 단계로 구성된다.
Patent KR-20000028495-A (KR)
Title: Method for controlling audio dubbing of cd-vcr complex system
Inventor: LEE KWAN WOO
IPC: G11B27/00
Filed: 1998-10-31
Abstract: PURPOSE: A method for controlling audio dubbing of CD-VCR complex system is provided so that audio dubbing operation cannot be made, in case that video signal on the video tape is not recorded, by detecting video synchronous signal. CONSTITUTION: In addition to the existing audio dubbing device of CD-VCR complex system that consists of a VCR part(200) comprising a CD part(100), a video recording part(31) and a video regeneration part(32), an interface part(300) controlling the signal interface of the CD part(100) and the VCR part(200), a key input part(400) for various key inputs, and a control part(500) proceeding the overall control of the system, an audio dubbing device of CD-VCR complex system comprises a synchronous detection part(600) connected to the video regeneration part(32) of the VCR part(200) and detecting the video synchronous signal from the output of the video regeneration part(32) and a function to control the audio dubbing operation according to the synchronous detection result of the synchronous detection part.
Patent KR-19990044996-A (KR)
Title: 유전체 공진기와, 이를 이용한 유전체 필터 및 유전체 듀플렉서
IPC: H01P1/208
Filed: 1998-11-04
Abstract: 본 발명은 장기적인 고신뢰성의 유전체 공진기(dielectric resonator).   와, 상기 유전체 공진기를 이용한 유전체 필터(filter) 및 유전체 듀플렉서(duplexer)에 관한 것으로, 여기에서는 오목부에 축적된 열이 방산된다. 상기 유전체 공진기는, 프레임(frame); 상기 프레임의 단부(ends)에서 상기 프레임에 일체화되도록 배치된 관(column)형상의 유전체 공진자(dielectirc resonant element); 상기 프레임의 외면(外面)으로부터 상기 유전체 공진자내에 상기 유전체 공진자의 축(軸) 방향으로 형성된 오목부(concave portions); 상기 오목부 내부(inside)를 포함하는 상기 프레임의 외면 전면에 형성된 도체(conductor); 및 상기 오목부에 삽입된 전열부재(thermal-conducting means)를 포함한다.
Patent KR-20000031217-A (KR)
Title: Audio reproduction system and method using imaginary location adjustable sound phase
Inventor: KIM SANG WOOK
IPC: G11B20/02
Filed: 1998-11-04
Abstract: PURPOSE: Audio reproduction system and method using a location adjustable imaginary sound phase is provided to adjust an imaginary sound without changing a filter coefficient. CONSTITUTION: An audio reproduction system using a location adjustable imaginary sound phase includes an imaginary sound phase forming part(400), a control part(420), an output power location adjusting part(410), and an adder(430). The imaginary sound phase forming part(400) generates a primary imaginary sound phase for forming an imaginary sound phase located in an A-location and a primary imaginary sound phase forming signal for forming an imaginary sound phase located in a B-location. The output power location adjusting part(410) adjusts a phase difference between the primary imaginary sound phases of the A and B-locations. The adder(430) outputs L and R signals providing a secondary imaginary sound phase located in a C-location. The secondary imaginary sound phase is formed by separating right and left signals.
Patent KR-19990045067-A (KR)
Title: 입체 비디오 코딩을 위한 가시 오프셋 추정
IPC: H04N7/26
Filed: 1998-11-06
Abstract: 입체 비디오 전송시스템에서는, 증가층 화상은 하부층 화상을 이용하여 디스패리티 예측되고, 이 하부층 화상은 내안 카메라 렌즈(inter-ocular camera lens) 분리를 보상하기 위해 그 하부층 화상을 우측으로 이동시킴으로써 상기 증가층 화상과 더 밀접하게 정합된다.  디스패리티 예측에 대한 모션 벡터의 검색범위는 코딩효율을 향상시키기 위해 축소된다.  엔코더에서, 증가층 화상과 하부층 화상간의 최적 오프셋(x)은 증가층 화상과 하부층 화상간의 최소 평균에러나 최소 평균제곱에러에 따라 결정된다.  이 오프셋(x)은 오프셋 검색범위(X)에 의해 바운드된다.  하부층 화상의 우측 최상의 x화소열은 소거되고, 하부층 화상의 좌측 최상의 x열은 증가층 화상을 디스패리티 예측하는데 사용하기 위한 기준화상을 얻기 위해 하부층 화상을 x화소만큼 우측으로 효과적으로 이동시키도록 메워진다.  VOP 등과 같은 제멋대로의 형상의 화상에 대해서는, 좌측 최상부는 소거되고, 우측 최상부는 메워진다.  디코더에서, 오프셋값(x)은 유효하다면 복구되어 기준 프레임을 재구성하는데 사용된다.
Patent KR-20000032091-A (KR)
Title: Photo spinner apparatus having function for measuring ammonia
Inventor: SONG GYOUNG SOO
IPC: H01L21/027
Filed: 1998-11-12
Abstract: PURPOSE: A photo spinner apparatus is provided to measure amount of ammonia gases when a photo lithography process is proceeded. CONSTITUTION: A photo spinner apparatus includes a measuring instrument(110) able to measure amount of ammonia gases in a photo spinner apparatus(10,100). The measuring instrument is added by a point to want for each elements which are inside of the photo spinner apparatus. And, an error message for notifying that amount of the measured ammonia is over a measuring criteria is displayed on a main screen.
Patent KR-20000032373-A (KR)
Title: Method for managing load of cellular system
Inventor: YUN SEON HUN
IPC: H04B7/155
Filed: 1998-11-13
Abstract: PURPOSE: A method for managing load of cellular system is provided to decrease an overload of a base station, and to protect a system of the base station by controlling a load on an air interface in the case that a great amount of loads are existed in a CDMA system. CONSTITUTION: A call control processor provides a priority to a base station which uses a traffic with a first reference value or more(s110). It is judged as to whether a load of the call control processor is more than a second reference value(s120). The call control processor requests a change of a parameter to the base station when the load of the call control processor is more than the second reference value(s130). The base station changes an access overload class(ACCOLC) of a mobile telephone to limit a transmission and register message(s140). The call control processor requests a recovery of a parameter to the base station when the load of the call control processor is less than the second reference value(s150). The base station recovers the parameter of the access overload class(s160).
Patent KR-20000039159-A (KR)
Title: Device for detecting impurity of semiconductor bake device
Inventor: HAN JAE SU
IPC: H01L21/66
Filed: 1998-12-11
Abstract: PURPOSE: A device for detecting impurity of semiconductor bake device is provided to reduce a badness of bake by detecting impurities on a bake plate before loading a wafer. CONSTITUTION: A wafer(11) is moved beside a bake plate by an arm(15). A lamp(20) of an impurity detecting device irradiates a light(24) on the bake plate(12). A CCD(Computer Controlled Display) camera obtains shadow information of impurities(21) occurred by the irradiated light and sends the information to a controller(23). The controller(23) deciphers the information. If the shadow is larger than an established size, the device steps and generates interlock. If not, the arm(15) moves the wafer(11) above the upper side of the bake plate. Pins(14) rises and supports the wafer(11) and descends and lays the wafer(11) on the bake plate(12). A cover(13) goes down on the wafer(11) and a heater in the bake plate(12) applies heat to the wafer(11). A photo sensitive film on the wafer(11) is baked.
Patent KR-19990024171-A (KR)
Title: 섬유원단의 정련장치
IPC: D06B5/08
Filed: 1998-12-16
Abstract: 본 발명은 섬유원단의 정련장치에 관한 것으로서, 종래에는 원통형으로 구성된 회전케이싱과, 그 내부에 일정한 간격을 두고 중앙을 향하는 충격판을 설치한 덤블러머쉰에 의하여 섬유원단을 정련하고 있다. 
     이러한 종래의 정련장치는 회전케이싱의 회전에 의해 섬유원단도 회전 또는 낙하등의 작용을 하면서 상기한 충격판에 부딪치거나 섬유원단끼리 서로 비벼주는 것에 의해 섬유원단을 정련시키고 있다. 
     이러한 방법은 섬유원단에 충격을 준다는 점에서 정련의 효과를 창출하고자 하고는 있으나 이는 회전케이싱의 회전에 의한 것이므로 섬유원단이 필히 서로 꼬이기 때문에 겹쳐진 부분에는 충격을 효과를 얻기 어려워 섬유원단 전체에서 정련의 효과를 기대할 수 없고, 또한 정련을 완료한 후에도 꼬인 섬유원단을 풀어야 하므로 오히려 많은 인력과 시간을 필요로 하는 단점이 있다. 
     이러한 문제점을 해결하기 위한 수단으로 섬유원단을 컨베이어 밸트에 이송시키는 이송력에 의해 충격판에 부딪히도록 하는 정련장치가 제공되고는 있으나 이 역시 그 충격력으로 섬유원단을 효과적으로 충격을 가하지 못하여 작업성은 물론 섬유원단의 정련을 효과적으로 행할수 없는 문제를 갖고 있었다. 
     이러한 문제를 해결하고자 본 발명은 섬유원단을 젯트 노즐부에 의해 급송하는 열풍에 의해 빠르게 이송시키면서 다수의 충격봉에 부딪히는 상태로 충돌시켜 섬유원단에 효과적인 충격을 가하여 원단의 제직을 더욱 조밀하고 부드럽게 정련시게 하므로 그 작업 시간을 단축하여 작업성이 우수하게 됨은 물론 섬유원단의 품질을 향상시키게 되는데 그 특징이 있다.
Patent KR-20000040166-A (KR)
Title: Apparatus for blocking electromagnetic waves from flexible print circuit board in folder type terminal
Inventor: LIM IK JOON
IPC: H04B1/38
Filed: 1998-12-17
Abstract: PURPOSE: An apparatus for blocking an electromagnetic waves from a flexible print circuit board(FPCB) in a folder type terminal is provided to prevent a sound from being ceased by minimizing interference of radio waves between a battery, the FPCB and an antenna. CONSTITUTION: A copper panel(42) is fixed between a FPCB(26) and battery(24) and has the same area as a whole area of the FPCB(26). The copper panel(42) prevents the equality of an isotopic emission pattern(46) at an antenna(16) and an emission effect by the battery(24) and thus removes noises by an emission interference between the battery(24) and antenna(16). Copper panels(40,44) are fixed at either sides of the copper panel(42) to be separated from each other. A lower part of one of the copper panels(40,44) that is close to the antenna(16), is removed for a smooth emission from the antenna(16).
Patent KR-20000040479-A (KR)
Title: Data transmission method using variable quadrature diffusion code
Inventor: SEO YONG CHANG
IPC: H04B7/26
Filed: 1998-12-18
Abstract: PURPOSE: A data transmission method using a variable quadrature diffusion code is provided to concurrently transmit and receive service data of different types from each other in real time for a multimedia mobile communication system using a multiple carrier-code division multiplex access(MC-CDMA), by defining data types and ranges of a service and variably allocating diffusion codes having different lengths to the defined service in order to assign multi-codes to mapping rules and high speed service data. CONSTITUTION: A channel is encoded for reduction of a bit error rate in data to be transmitted(401). The data which is encoded by a method of quadrature phase shift keying(QPSK) is modulated and then subjected to a symbol repetition(402). The data with which the symbol repetition has been performed is multiplied by a variable quadrature diffusion code to be diffused(403). Thereafter, the diffused data is transmitted with a transmission speed of 32.768Mbps(404).
Patent KR-20000040704-A (KR)
Title: Liquid crystal display
Inventor: LEE HAE DONG
IPC: G02F1/133
Filed: 1998-12-19
Abstract: PURPOSE: A liquid crystal display is provided to invert data displayed on the screen of LCD(Liquid Crystal Display) panel. CONSTITUTION: A liquid crystal display includes a data driver(14), a gate driver(12) and an LCD panel(10). The data driver(14) and the gate driver(12) are electrically coupled with the LCD panel. The data driver and the gate driver include a setting switch controlling the sequence of input and output data. The setting switch inverts the sequence in order to invert the data display. The screen hinge-coupled to the LCD module displays non-inverted image.
Patent KR-19990063298-A (KR)
Title: [트리스(디메틸아미노)포스포니오아미노]트리스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄디클로라이드 및 그의 제조방법
IPC: C07F9/02
Filed: 1998-12-22
Abstract: 본 발명은 테트라키스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄히드록시드를 극도로 간단한 방법으로 제조할 수 있는 원료 및 그 극도로 간단한 방법의 제공, 그리고 상기 원료부터 해당 히드록시드를 제조하는 방법 및 관련된 물질을 분리 또는 단리하는 방법의 제공에 관한 것이다. 
     상기 제조방법에 의하면, 테트라키스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄클로라이드에 염화수소를 접촉시켜, 상기 테트라키스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄클로라이드에 상기 염화수소를 부가시킴으로써, [트리스(디메틸아미노)포스포니오아미노]트리스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄디클로라이드를 제조한다.   또, 상기 디클로라이드의 수용액과 OH - 형 이온교환수지를 접촉시킴으로써 테트라키스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄히드록시드를 제조한다. 
     또, 상기 분리방법에 의하면, 테트라키스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄클로라이드를 [트리스(디메틸아미노)포스포니오아미노]트리스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄디클로라이드로서 수상에 추출하여 분리하고 있다. 
     또한, 상기 단리방법에 의하면, [트리스(디메틸아미노)포스포니오아미노]트리스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄디클로라이드의 수용액을 중화시켜, 테트라키스[트리스(디메틸아미노)포스포라닐리덴아미노]포스포늄클로라이드를 재생하여 고체로서 석출시키고 있다.