baber/WOPTO huggingface dataset:
Patent KR-20000001910-A (KR)
Title: Trench device separation method of semiconductor device, using aluminum oxide film
Inventor: HONG SOK HOON
IPC: H01L21/76
Filed: 1998-06-15
Abstract: PURPOSE: A trench element separation method of a semiconductor device is provided to prevent an etching solution from entering in the buffer layer, using an aluminum oxide film. CONSTITUTION: The trench element separation method of a semiconductor device comprises the process of; forming an oxide film(111) and a silicon nitride film(112) on the silicon substrate(100); etching the oxide film(111) and the silicon nitride film(112) to expose the element separation area of the silicon substrate(100); etching the exposed part of the silicon substrate(100) and forming a trench(120).
Patent KR-20000003751-A (KR)
Title: Method for forming metal wires of semiconductor devices
Inventor: LEE SEONG JUN
IPC: H01L21/28
Filed: 1998-06-29
Abstract: PURPOSE: A forming method of metal wires using damascene is provided to improve an adhesive force between an etch stopper and an HSO(hydrogen silsesquioxane) layer having a low dielectric constant. CONSTITUTION: The method comprises the steps of: forming an interlayer dielectric by sequentially depositing a first HSQ layer(22), a first etch stopper(23) made of UV transparent oxynitride, a second HSQ layer(24) and a second etch stopper(25) on a semiconductor substrate(20) having a lower conductive pattern(21); forming a first contact hole(27) by etching the interlayer dielectric to expose a portion of the lower conductive pattern(21) using a first PR pattern(26); removing the first PR pattern(26); forming a second contact hole(29) by etching the second etch stopper and the second HSQ layer to expose the first etch stopper using a second PR pattern(28); removing the second PR pattern(28); annealing the resultant structure used H2 gas before and after the first and second PR patterns(26,28) are removed, respectively.
Patent KR-20000004065-A (KR)
Title: Fermented liquor added with herb flavor
Inventor: LEE SANG SU
IPC: C12G3/06
Filed: 1998-06-30
Abstract: PURPOSE: A healthy fermented liquor is provided to obtain an anti-cancer effect by adding various herb dried in shade and fermenting at high temperature followed by aging at low temperature. CONSTITUTION: A fermented liquor production method comprises: drying the leaf, trunk, flower, and seed of the herb in shade; adding 0.5-10 wt% of dried herb in production process of the fermented liquor; then fermenting at high temperature of 18-45°C for 3days; filtering then heating at 60°C for 3-10 minutes; and aging at low temperature below 12°C for 48 hours.
Patent KR-20000007537-A (KR)
Title: Semiconductor memory device having a plurality of fuses
Inventor: LEE CHANG HO
IPC: H01L23/525
Filed: 1998-07-03
Abstract: PURPOSE: A semiconductor memory device is provided to reduce depth of an insulating layer and increase a layout area for safe cutting of a fuse CONSTITUTION: The device comprises a semiconductor substrate; a first insulating layer for forming a gate formed on the first insulating layer; a conducive layer for forming a gate formed on the first insulating layer; a second insulating layer formed on the conductive layer for forming a gate; a plurality of fuses formed on the second insulating layer including a top of the conductive layer; and an open area formed on a plurality of the fuses by etching the second insulating layer, wherein the conductive layer for forming a gate is relatively larger than the open area.
Patent KR-19990013707-A (KR)
Title: 마이크로 볼 그리드 어레이용 에어-블로우 솔더 볼 로딩 시스템
IPC: B25B11/00
Filed: 1998-07-09
Abstract: 본 발명은 소정의 양의 진공 구멍(90)을 포함하는 진공 헤드(70)를 구비한 로보틱 아암(60)을 갖는 볼 그리드 어레이 스테이션(BGA station: 50)에서, 캐리어(20)를 솔더 범프(solder bump)하기 위한 솔더 볼(solder ball: 14)의 어레이 로딩 방법 및 장치에 관한 것이다. 솔더 볼(14)은 진공 헤드(70)를 수용하는 헤드 개구(510)를 구비한 터브(tub: 500) 내로 공급된다. 진공 헤드(70)가 터브(500)의 헤드 개구(510)를 향해 로보틱 아암(60)에 의해 위치된 후에, 진공 구멍(90)을 향해 가스 압력으로 솔더 볼(14)이 뜨도록 힘을 가하기 위해 적절한 유압(570)이 터브(500) 내의 솔더 볼(14)에 적용된다. 적절한 크기의 환형상 진공 구멍(90)은 BGA 캐리어(20)의 최종 위치로 바람직한 양의 솔더 볼을 빨아 올리기 위해, 적어도 구멍(90)을 통해 공급되는 부분 진공(34)을 갖는다.
Patent KR-20000013772-A (KR)
Title: Pattern printing device of wooden coffin
Inventor: GONG SUK DOL
IPC: B44C1/24
Filed: 1998-08-13
Abstract: PURPOSE: A pattern printing device is provided to conveniently print an animal, a plat, a pattern, or a character in a wooden coffin for funeral institution. CONSTITUTION: The pattern printing device comprises: a support unit(110) installed in a working board(114) in the upper face of a support frame(111); a metal mold unit(120) installed a metal mold(121) in the upper face of the working board(114) of the support unit(110), and installed in a heater(123) inside the metal mold(121); a pressing unit(130) to press a wooden board(210) for a wooden coffin safely arrived in the metal mold(121) by installing in the upper side of the metal mold unit(120); a support arm(112) connected upward in the rear middle of the support unit(110); a bracket(113) stuck in the upper part of the support arm(112); a guide slot(115) formed in a certain position of the bracket(113); the metal mold unit(120) equipped a control box(124) and a handle(115).
Patent KR-20000013937-A (KR)
Title: Floor material containing charcoal
Inventor: PARK CHAN DONG
IPC: B32B33/00
Filed: 1998-08-14
Abstract: PURPOSE: A floor material containing a charcoal is provided to absorb smell and to have the effect of regulating humidity, blocking the wave of a water vein and emitting an infrared ray. CONSTITUTION: The floor material is sequentially loaded with a lower, a middle and an upper layer from the lower part, and the middle and lower layers are consisted of a transparent resin layer containing charcoal powder. A chip containing the charcoal has the steps of: manufacturing a blending sol by agitating after putting a PVC 100, a plastic material 50-70, a heat stabilizing material 1-5, a yellow earth 5-10, a charcoal powder 5-10 and other additional material 1-5 weight part into a mixer; putting a PVC 100, a plastic material 30-50, a filling material 120-160, a yellow earth 5-10, a charcoal powder 5-10 and other additional material 1-5 weight part into a mixer, then slowly putting the blending sol at the temperature of 120-160°C and grinding it with a grinder; and sorting the ground particle into the particle diameter of 0.3-1.8mm.
Patent KR-20000014742-A (KR)
Title: Low voltage detecting device of information terminal
Inventor: KIM HAN SEONG
IPC: H04B1/38
Filed: 1998-08-24
Abstract: PURPOSE: The detecting device is to check the voltage of battery according to operating mode of information terminal. CONSTITUTION: The device comprises a low voltage detecting unit(210) which compares a voltage input from a mounted battery(220) with a predetermined voltage and detects low voltage signal, a central process unit(240) which outputs operating mode signal according to operating state, and a timing control unit(230) which generates a low power sensing signal to the central process unit if a low voltage signal as detected from the low voltage detecting unit and a low frequency operating mode signal from the central process unit are input together. Thus, lifetime of battery can be extended by not checking the low voltage in active mode of personal digital assistant and checking the battery voltage only when it is in doze mode wherein load is almost not present.
Patent KR-20000018655-A (KR)
Title: Composite material for chip inductor
Inventor: SHIN HYUK SU
IPC: H01F17/00
Filed: 1998-09-03
Abstract: PURPOSE: A composite material for a chip inductor is provided to supply a composite material adapted to elements of a chip inductor used in a frequency band between an existing chip inductor with a magnetic material and a chip inductor with a low dielectric constant material. CONSTITUTION: A composite material for a chip inductor relates to a composite material obtained by mixing a magnetic material with a spinel structure and a non-magnetic material according to a constant ratio. The composite material is formed by containing a dielectric material of 20-40wt% to a ferrite of Ni-Zn series or a ferrite of Ni-Zn-Cu series. the dielectric material contained in the ferrite is BaTiO3 of 20-30wt% or Al2O3 of 30-40wt%.
Patent KR-20000019046-A (KR)
Title: Accumulator of rotary compressor
Inventor: KIM DONG HAN
IPC: F04C2/00
Filed: 1998-09-08
Abstract: PURPOSE: An accumulator of a rotary compressor is provided to improve the efficiency of a compressor by minimizing the channel resistance and the channel loss of a refrigerant. CONSTITUTION: A rotary compressor is formed by: an accumulator(109) consisting of a screen(103) serving as a filter of a refrigerant introduced into a shell(102) having a refrigerant introducing port(101) on the upper area and a screen holder(104) having a refrigerant introducing hole(105) for introducing the refrigerant come out through the screen into the lower area of the shell as well as for supporting the screen; a tube(106) feeding the refrigerant introduced into the shell to a compressor body(108) and inserted into the lower part of the screen holder of the shell to minimize the channel resistance of a refrigerant; and an oil return pipe(107) connected between the bottom parts of the tube and the shell. Herein, the oil return pipe is arranged for flowing the oil having circulated the system into the compressor body again and the shell contains a larger diameter for securing the required amount of coolant for driving the compressor.
Patent KR-19990024050-A (KR)
Title: 자동차용 배기소음 감소장치
Filed: 1998-09-16
Abstract: 본 발명은 자동차의 엔진에서 배기되는 폭발 배기가스의 배출압력을 낮추고, 고주파소음은 물론 저주파소음도 효과적으로 저감시킬 수 있도록 하는 자동차용 배기소음 감소장치에 관한 것으로, 이는 자동차 엔진의 배기밸브에 연결된 배기관에는 내부에 다공관이 구비된 단순 수동형 소음기의 입구를 연결하고, 그 단순 수동형 소음기의 출구에는 배기소음을 인위적으로 상쇄시키기 위하여 제어음 출력수단을 구비한 능동형 소음기를 설치하며, 상기 능동형 소음기는 반원뿔통형 본체의 출구관과 동심선상에 상기 단순 수동형 소음기의 출구를 연결하고, 상기 반원뿔통형인 본체의 경사면측에는 울림통의 선단에 스피커를 구비하여 배기소음을 상쇄시키는 주파수를 출력할 수 있도록 한 제어음 출력수단을 상기 배기관과 수평이 되도록 설치함으로서 이룰 수 있는 발명이다.
Patent KR-19990030136-A (KR)
Title: 표면-변형된 판상 기재
IPC: C08K3/36
Filed: 1998-09-25
Abstract: 본 발명은, 침전성 및 재교반성이 개선된 판상 기재계 표면-변형 안료, 이의 제조 방법 및 용도에 관한 것이다.
Patent KR-19990036805-A (KR)
Title: 스위치 기어
IPC: H02B13/02
Filed: 1998-10-02
Abstract: 본 발명의 진공차단기는 주축을 지지점으로 하여 가동전극이 좌우로 회동하여 고정전극에 대하여 투입, 차단할 때에 생기는 아크를 효율좋게 소호하는 것으로서, 이를 위하여 양 전극이 대응하는 전극면의 각홈의 바깥 둘레 끝쪽 전극면에 형성한 링형상의 주행면을 가지고, 양 전극이 대응하는 간극폭을 가동 블레이드측을 향하여 순차 좁아지게 한다.  이로써 아크를 주행면을 따라 회전자기 구동시키고, 아크를 효율좋게 소호하여 전극차단성능을 향상시킬 수 있게 되었다.
Patent KR-20000026282-A (KR)
Title: Decoder of rom device having flat cell
Inventor: KIM KANG YONG
IPC: G11C16/00
Filed: 1998-10-16
Abstract: PURPOSE: A decoder of ROM device having flat cell is provided to decrease a lay-out size and improve an operation speed by decoding external signals and selecting a bit line and a ground line. CONSTITUTION: Decoder blocks(BLOCK0,..,BLOCK7) have a block decoder(100), a word line decoder(200), a word line decoder(200), a ground line decoder(300), a memory cell array(400), and a bit line decoder(500). The block decoder(100) decodes signals(Pi,Qi) inputted from the outside and outputs decoded signals(BKL,RH,RL). The word line decoder(200) activates a word line(WL) corresponding to the memory cell array(400) selected by the block decoder(100). The ground line decoder(300) decodes signals(RH,RL,GS) inputted from the block decoder(100) and outputs a signal(GSL). The memory cell array(400) has memory cells with a plurality of flat cell structure and a plurality of word lines and bit lines. The bit line decoder(500) decodes signals(RH,RL,GS) inputted from the block decoder(100) and outputs a signal(BSL).
Patent KR-19990037422-A (KR)
Title: 프로브 카드 및 프로브 카드의 제조방법
IPC: G01R1/067
Filed: 1998-10-27
Abstract: 기판의 한 주면 상에  그 일부가 돌출부를 갖는 적절한 접촉단자가 형성되었다.     리드 (lead) 의 일단이  상기 기판 및 프로브 사이에 설치되는 지지부를 통하여 장착되는데,  이 리드는  상기 주면으로부터 박리된 상태로 기판의 상기 주면을 따라 설치된다.
Patent KR-20000032059-A (KR)
Title: Method for encoding b3zs and apparatus thereof
Inventor: CHO NAM WOOK
IPC: H04L1/24
Filed: 1998-11-12
Abstract: PURPOSE: A method for encoding B3ZS(Bipolar with 3 Zero Substitution) and an apparatus thereof are provided to enable accurate and stable encoding by reducing the number of component logic element required for B3ZS using toggle characteristic of T flip flop, thereby improving the stability of digital data transmission. CONSTITUTION: A toggle latch part for determining polarity detects as violation when '0 0 0'data is input by a violation detection part(200) and '0 0 0'data is supposed as 'B 0 V', continually toggles if pulse is input, and is reset in case that B point data become enabled or in case that B point data become disabled and V point, thereby determining the polarity.
Patent KR-19990014625-A (KR)
Title: 육류 구이판 세척기
IPC: A47L17/04
Filed: 1998-11-27
Abstract: 본 발명은 외체의 상부 중앙에서 수직 하향으로 안내하여 투입하고, 상향으로 튀어 오르는 세척수를 차단하도록 투입부가 구성되고, 한 쌍의 브러쉬가 상향으로 회전하여 상기 투입부를 통해 수직으로 투입된 구이판을 세척하도록 세척부가 구성되며, 상기 세척부를 통과한 구이판을 외체의 전방 하부로 안내하여 배출시키도록 배출부가 구성되고, 상기 투입부와 세척부가 연동하도록 모터의 동력을 전달하는 동력전달부로 구성되어 구이판의 세척시 세척수가 방출되어 작업자를 오염시키는 것을 방지하고, 구이판을 브러쉬측으로 이송시키는 이송구조를 간소화함과 아울러 다양한 형태의 구이판을 수용할 수 있도록 하며, 브러쉬를 상`하, 좌`우로 용이하고 정확하게 조절할 수 있고, 구동 소음과 진동을 최소화하며, 기기의 크기를 소형화 할 수 있는 육류 구이판 세척기에 관한 것이다.
Patent KR-20000034229-A (KR)
Title: Interleaving method of atm cell
Inventor: HEO DONG SEOK
IPC: H04L47/43
Filed: 1998-11-28
Abstract: PURPOSE: An interleaving method of the ATM(Asynchronous Transmission Mode) cell is provided to reduce cell loss ratio and transmission latency for transmitting the ATM cell even in poor surroundings. CONSTITUTION: For interleaving 5 byte of cell header in 53 byte of ATM cell, a first buffer part(20) proceeds FIFO(First In First Out) only for the 5 byte header. A parallel-to-serial converter(30) transmits one by one byte in the 5 byte cell header sequentially. A serial-to-parallel converter(50) collects the eighth 1 bit of each among parallel data and converts them into 8 bit of parallel data. A second buffer part(60) stores parallel data, transmits them according to inputted order. An output control part(40) counts bit quantity, and outputs cells according to the preset order.
Patent KR-20000034437-A (KR)
Title: Device for generating strobe signal for extracting pilot signal in cofdm receiver
Inventor: KIM YONG SANG
IPC: H04N7/015
Filed: 1998-11-30
Abstract: PURPOSE: A device for generating strobe signal for extracting pilot signal in COFDM receiver is provided to reduce the cost in manufacturing COFDM(coded orthogonal frequency division multiplex)receiver by simply implementing strobe signals for extracting TPS pilot and CPC pilot signals in COFDM receiver with a ROM. CONSTITUTION: A device for generating strobe signal for extracting pilot signal in COFDM receiver includes a counter(20), a TPS ROM(22) and a CPC ROM(24). The counter(20) counts clocks and outputs clock values as carrier number while being enabled by a valid signal. In case that valid signal is high, the counter(20) counts and outputs carrier number from 0 to 1704. The TPS ROM(22) receives carrier number from 0 to 1704 in address and outputs strobe signals for outputting TPS pilot. The CPC ROM(24) receives carrier number from 0 to 1704 and outputs strobe signals for outputting CPC pilot.
Patent KR-19990062941-A (KR)
Title: 페이지 와이드 잉크제트 방식의 프린터 및 그 제조 방법
IPC: B41J2/21
Filed: 1998-12-09
Abstract: 잉크제트 방식의 프린터용 페이지 와이드(page wide) 프린트헤드는 프린터로 프린트되는 가장 넓은 용지를 가로질러 프린트하는데 사용되는 노즐의 수를 초과하는 다수의 잉크제트 방식의 노즐을 포함한다. 초과 노즐은 장착된 프린트헤드의 선택된 노즐만이 프린트되는 가장 넓은 용지를 프린트하기 위한 프린트 위치 내에 있도록, 프린트헤드를 위한 장착 공차가 헐거워지는 것을 가능케 한다. 프린터의 작동을 위해 최대 프린트 위치 안에서 상기 노즐을 선택함으로써, 용지 와이드 프린트헤드는 헐거운 공차보다 훨씬 더 높은 정밀도 내에서 효과적으로 장착되어, 용지 와이드 프린트헤드를 구비한 잉크제트 방식의 프린터가 경제적으로 제조될 수 있다.  최대 프린트 위치 안에서 노즐의 동일성 확인은 용지 상에 마크, 바람직하게는 수직선을 프린트하고, 프린트된 마크를 주어진 화소(picture element; pel)에 대한 공칭 위치를 나타내는 표시부와 비교함으로써 행해질 수 있다. 상응하는 마크는 어떤 노즐이 상기 pel를 프린트하기 위해 선택되어야만 하는지를 결정한다. 선택된 노즐과 주어진 pel의 공칭 위치간의 차이는 최대 프린트 위치 내에서 프린트하기 위한 페이지 와이드 프린트헤드의 노들 모두에 적용될 수 있는 오프셋을 결정한다. 선택적으로, 변환 맵핑(transformation mapping)은 프린트되는 공칭 pel 위치를 페이지 와이드 프린트헤드의 실제 노즐로 전환시키기 위해 조합될 수 있다.
Patent KR-20000040188-A (KR)
Title: Apparatus for preventing paper winding of printer
Inventor: LEE JIN SU
IPC: B41J11/00
Filed: 1998-12-17
Abstract: PURPOSE: An apparatus for preventing a paper winding of a printer is provided to improve the reliability of the printer by preventing wrinkles of a paper and malfunction of a transfer roller and a fusing roller since guide elements are provided to guide a paper toward discharge hole without winding on the fusing roller. CONSTITUTION: An apparatus for preventing a paper winding of a printer includes a main guide element(22) provided around a discharge hole between a transfer roller(15) and a fusing roller(18), through which a printed paper is discharged, for guiding the printed paper toward a discharging direction while preventing winding of the paper onto the fusing roller, and an auxiliary guide element(24) mounted below the main guide element so that the printed paper passes through between the main guide element and the auxiliary guide element, wherein the main guide element has a front end part which faces to the fusing roller and is inclined upward, and the auxiliary guide element has a front end part which faces to the transfer roller and is inclined downward.
Patent KR-20000043442-A (KR)
Title: Method for measuring fatigue rate of roll using rear directional diffusion of surface wave
Inventor: KIM SANG YEONG
IPC: G01N29/27
Filed: 1998-12-29
Abstract: PURPOSE: A method is provided to measure the thickness of fatigue layer in a roll from the energy of supersonic waves, which are rear directionaly diffused, by using a surface wave inputted in perpendicular to the roll after installing a surface wave measurer on a grinder in the roll. CONSTITUTION: A grinding process is operated for contacting a rubber pad(15) to a jig(10) and to the area of a roll(17) inspecting supersonic wave. Herein, the rubber pad eliminates foreign material(16) on the surface of the roll. And, the jig includes a supersonic wave inspector and a contacting medium supplying line. The roll is rotated toward an arrow(19) direction for supplying a high voltage pulse to the supersonic wave inspector on the jig to generate supersonic wave. The supersonic wave is inputted to a surface wave(20) progressing along the surface of the roll through a contacting medium. The diffused supersonic wave at a crack on the roll or at a grain edge is transferred to the supersonic wave inspector for being transferred to a pulse transferring/receiving apparatus(11). The signal of the pulse transferring/receiving apparatus is amplified in a signal amplifier(12) while converting an analog signal into a digital signal to be transferred to a calculating apparatus(13). The calculating apparatus obtains an energy value by using a formula, which is e=sigma Vi2, to measure the fatigue rate of the roll surface.
Patent KR-20000043476-A (KR)
Title: Radio interface unit of wireless local loop system building modems thereon
Inventor: LEE SEONG GIL
IPC: H04B7/24
Filed: 1998-12-29
Abstract: PURPOSE: A radio interface unit(RIU) of a wireless local loop(WLL) system is provided to improve signal characteristics by building a digital signal processing(DSP) chip performing modem functions and vocoder functions, or by building modems composed of rest compositions except a RIU composition which is overlapped with an interface circuit composition in the RIU. CONSTITUTION: When a personal computer(PC)/terminal transmits data, and if the transmitted data is transmitted to a controller(28) through a data port and RS-232C buffer/MUX(multiplexers)(30-1,30-2), a radio interface unit(RIU) of a wireless local loop(WLL) system transmits the data to a high speed network only data/internet server of an interworking(IWF) path, through time switches(23-1,23-2), code division multiple access(CDMA) modems(22-1,22-2), a radio frequency(RF) unit(21), and a radio port(RP). If the data is transmitted to a public switched telephone network(PSTN) modem(29), the RIU converts the data into analog signals in the PSTN modem. The RIU transmits the data to a PSTN data/internet server through MUX(32-1,32-2), CODECs(coder-decoders)(25-1,25-2), vocoders(24-1,24-2), the time switches, the CDMA modems, the RF unit, and the RP. If the PC/terminal receives data, and if the received data is from the high speed network only data/internet server, the RIU receives the dat through the RP, the RF unit, the CDMA modems, the time switches, the controller, the RS-232C buffer/MUX, and the data ports. If the received data is from the PSTN data/internet server, the RIU receives the data to the RP, the RF unit, the CDMA modems, the time switches, the vocoders, the CODECs, the MUX, and the PSTN modem. The RIU converts the data into digital data in the PSTN modem, and receives the data in the PC/terminal through the RS-232 buffer/MUX and the data port.
Patent KR-20000044654-A (KR)
Title: Fabrication method of back panel for pdp using mold
Inventor: HA PYUNG SU
IPC: H01J9/24
Filed: 1998-12-30
Abstract: PURPOSE: A fabrication method of back panel for PDP(Plasma Display Panel) using mold is provided to solve the misalignment between barrier ribs and electrode due to the deformation of a glass substrate and be adapted in mass-production process. CONSTITUTION: A fabrication method of back panel for PDP using mold comprises: a first step manufacturing a mold having plural groves for forming barrier ribs; a second step pouring molten glass into the mold and then cooling the molten glass to form the back panel having plural barrier ribs of protruded shape; and a third step forming electrodes on the back panel between the barrier ribs by plating method.
Patent KR-20000045728-A (KR)
Title: Interlock device of shift lever for automatic transmission
Inventor: JANG JONG IL
IPC: F16H63/36
Filed: 1998-12-30
Abstract: PURPOSE: An interlock device of shift lever for an automatic transmission is provided to modify the assembly structure of a safety stopper, and to improve the assembly efficiency, and to reduce a working noise of the interlock device CONSTITUTION: An interlock device of shift lever for an automatic transmission comprises; for an interlock device of shift lever to be provided with a safety stopper and an elastic device to prevent a shift lever from moving to a reverse or a park position when in driving; a clip (101) to be formed as one body in one side of a safety stopper (100), and to consist of a first clip part (102) and a second clip part (103), which are the opposite direction and have outer flanges(104,105).
Patent KR-20000046242-A (KR)
Title: Multichannel single code terminal and method thereof
Inventor: LEE KYONG KOOK
IPC: H04B7/26
Filed: 1998-12-31
Abstract: PURPOSE: A multi-channel single code terminal and the method thereof are provided to reduce the output of a high power amplifier for the radio frequency of a terminal by simplifying the circuit and minimizing the peak to average ratio. CONSTITUTION: A digital multiplex(110) couples signals supplied from a plurality of user channels in the TDMA(Time Division Multiplex Access) method. A CDMA(Code Division Multiplex Access) modem(10) divides the signals supplied from the digital multiplex(110) into the signals of I and Q. A first and a second digital band restriction filters(20,20') connected to the output signals of I and Q respectively remove unnecessary waves and distorted noises. A first and a second D/A converters(30,30') connected to the first and the second digital band restriction filters(20,20') respectively convert digital signals into analog signals. A first and a second analog band restriction filters(40,40') connected to the first and the second D/A converters(30,30') respectively remove unnecessary waves and distorted noises. A first and a second converters(60,65) are coupled with a first intermediate frequency. An analog band pass filter(45) passes only the frequencies of signals corresponding to subscriber data. An RF(Radio Frequency) HPA(High Power Amplifier)(90) amplifies the radio frequency supplied from the analog band pass filter(45) into a high power. A duplexer(100) supplies the signal from the RF HPA(90) to an antenna.