baber/WOPTO huggingface dataset:
Patent KR-20000002357-A (KR)
Title: Wave variable light drop/pass filter for wave diverse method communication without orbit-switched noise
Inventor: LEE KOUNG SIK
IPC: H04B10/2581
Filed: 1998-06-19
Abstract: PURPOSE: A wave variable light drop/pass filter is provided to easily vary a wave, make a high-speed channel selection possible because the pass wave width is narrow, and a lot of signals different are transmitted in a wave at the same time. CONSTITUTION: The wave variable light drop/pass filter comprises: a light switch unit(40) for dividing a light signal into the desired rate, transmitted from a diverse wave generation unit for generating a light signal consisted of plural waves; a variable type wave drop unit(60) for dropping a special wave among the divided signals through the light switching unit; receiving unit(20) for receiving the dropped signal in the variable type wave dropping unit.
Patent KR-20000003507-A (KR)
Title: Method of forming isolation film of semiconductor device
Inventor: SON KWUN
IPC: H01L27/04
Filed: 1998-06-29
Abstract: PURPOSE: The method prevents the reduction of the size of an active region in a cell region where the active region and an isolation region are relatively smaller than a peripheral circuit region by forming an isolation film and prevents the generation of a step difference in the peripheral circuit region in the oxide formation process for the isolation film formation process. CONSTITUTION: The method is characterized by preventing the reduction of an active region due to the generation of bird' beak in a cell region(A) and preventing the generation of a step difference in a peripheral circuit region(B) by forming an isolation film(26A) with STI(shallow trench isolation) method in the cell region and forming an isolation film(23) with LOCOS(local oxidation of silicon) process in the peripheral circuit region.
Patent KR-19990007493-A (KR)
Title: 단일 마스크로 상보형 웰과 자기 정렬 트렌치를 형성하는 방법
IPC: H01L27/092
Filed: 1998-06-30
Abstract: 본 발명은 단결정 기판에 형성된 복수의 CMOS 트랜지스터들을 구성하는 집적회로를 가리킨다. 복수의 상보적인 p-웰(well) 영역과 n-웰(well) 영역의 공간 쌍들은 기판내에 있다. 반도체 물질로 채워진 자기 정렬 트렌치는 각각의 웰 영역 사이에 있다. 각각의 웰 영역은 또한 소스, 게이트 및 드레인을 갖는다. 
     이 트렌지스터 제조방법은 단결정 기판 위에 한 층의 첫 번째 절연물질을 형성하는 첫 번째 단계를 필요로 한다. 다음에, 한 층의 반도체 물질이 첫 번째 절연물질 위에 형성된다. 그 다음 단계는 밑에 있는 반도체 층의 첫 번째 구획을 노출시키기 위하여 반도체 층 위로 p-웰 또는 n-웰 마스킹 층중 하나를 형성하고 패터닝하는 것을 포함한다. 일단 이 패터닝 단계가 완료되면, 첫 번째 불순물의 한 극성은 반도체 층의 첫 번째 구획으로 정렬된 기판 영역에 주입된다. 이 첫 번째 구획은 다음엔 두 번째 절연물질로 전환되고, 마스킹 층은 제거되고, 그것에 의해서 반도체 층의 나머지 구획을 노출시킨다. 첫 번째 불순물과 반대 극성인 두 번째 불순물은 그 다음에 나머지 구획으로 주입된다.
Patent KR-20000013532-A (KR)
Title: Standard time generating circuit of mobile station
Inventor: SEOK WON GYU
IPC: H04B7/26
Filed: 1998-08-10
Abstract: PURPOSE: A standard time generating circuit of a mobile station can match the counting start point of a counter in a mobile station with a start point of a synchronous channel in the unit of super frame. CONSTITUTION: This circuit includes a standard time generator producing a counting signal generating a standard time of the mobile station in response to an input control signal; and a control part producing the control signal controlling an output point of the counting signal in order to match the start point of the counting signal to the super frame's start point.
Patent KR-20000013695-A (KR)
Title: Korean meliae cortex extract containing sugar combined protein and manufacturing method thereof
Inventor: BAE IL JU
IPC: A23L33/00
Filed: 1998-08-12
Abstract: PURPOSE: An extract of Meliae cortex is provided for the treatment of a disease such as a gastric ulcer, splenopathy, vitiligo and so on, which lacks an immune system. CONSTITUTION: The manufacturing method for the extract of Meliae cortex is composed of the steps of: putting the Meliae cortex into a crusher, which is dried in the shade and washed and then crushing into 200 to 300 mesh; extracting a core extract at the temperature of 120°C for 10 hours after putting the Meliae cortex material into a high pressure heat pot, which is dried in the shade and washed; mixing the material of 70 to 90 wt % obtained in a first process with a second processed material of 10 to 30 wt %; putting the material into a shape former to make into a pill or a tablet.
Patent KR-20000014422-A (KR)
Title: Method for analyzing a performance of a packed voice and video traffic used in an atm network
Inventor: OH YOUNG CHEOL
IPC: H04L12/26
Filed: 1998-08-17
Abstract: PURPOSE: A method is provided to analyze a performance of an ATM traffic considering a real circumstance. CONSTITUTION: The performance analyzing method comprises the steps of: obtaining an equivalent MMPP(2) parameter associated with a voice traffic; obtaining an equivalent MMPP(2) parameter associated with a video traffic; obtaining an infinitesimal generator matrix and an arrival rate matrix of a processor where the voice traffic and the video traffic are superposed; and analyzing the superposed video and voice traffics by performing MMPP(4)/Er(k)/1/B queuing, to obtaining performance parameters.
Patent KR-19990023936-A (KR)
Title: 에너지선 경화형 친수성 점착제 조성물 및 그 이용방법
IPC: C09J7/02
Filed: 1998-08-27
Abstract: 친수성 점착제 (A)와, 에너지선 중합성 화합물 (B)와, 필요에 따라 광중합개시제(C)를 포함하는 에너지선 경화형 친수성 점착제 조성물. 그래서 점착시트 박리후에 점착제가 웨이퍼 표면에 잔존했다 하여도 물로 세척하여 용이하게 잔류점착제를 제거할 수 있는 웨이퍼 표면보호시트에 적절한 점착제 조성물을 제공한다.
Patent KR-20000018462-A (KR)
Title: Manufacturing method for meat roasting plate with loess
Inventor: LEE YEON WOO
IPC: A47J37/04
Filed: 1998-09-02
Abstract: PURPOSE: The meat roasting plate made of loess absorbs fats of meat, so some fats are burned out, which makes meats to be soft and reduces cholesterol. This yellow soil plate is not affect to environment and solves troublesome of dish washings. CONSTITUTION: The manufacturing method comprises of: adding 40-45wt.% of loss produced from Ahn-Gang, 30-40wt.% of loess produced Gyeong-Ju, 5-10wt.% of loess produced from Sancheong mountain, 5-10wt.% of pink kaolin, 5-10wt.% of mineral stone, 1-2wt.% of pineneedle powder, 1-2wt.% of moxa powder to the mixer and mixing them fully; sorting out impurities; the primary pulverizing; adding 5-8% water to this and making it to be vacuumed state; the secondary and the tertiary pulverizing; eliminating the impurities completely; making plate in a fixed form and size using a press; adhering a cotton or a hemp cloth on the upper surface of the plate; drying at 40-45 deg.C, humidity 80-85% for 2-3days; maturing it for 24hrs; air washing it using a compressor.
Patent KR-20000025971-A (KR)
Title: Method for storing preference channels in television
Inventor: HAN SANG CHEOL
IPC: H04N5/50
Filed: 1998-10-16
Abstract: PURPOSE: A method for storing preference channels is provided to give a more convenient channel selection function to users by automatically storing preference channels and displaying the stored preference channels in a first-in first-out(FIFO) manner. CONSTITUTION: A method for storing preference channels comprises the steps of: initializing a watching time counter if an input of a channel selection part is completed and selecting a corresponding channel after setting a watching time check flag; judging a state of the watching time check flag if arbitrary time comes after the channel selection and increasing the watching time counter in case that the setting has been made; and initializing the watching time counter after storing the corresponding channel as a preference channel in case that the watching time is more than a predetermined time and clearing the watching time check flag.
Patent KR-20000026581-A (KR)
Title: Liquid crystal display of cycle inversion system
Inventor: KIM HAN SEOP
IPC: G09G3/36
Filed: 1998-10-21
Abstract: PURPOSE: A liquid crystal display of cycle inversion system is provided to maintain and improve image quality with stability regardless of image pattern using cycle inversion system. CONSTITUTION: A liquid crystal display of cycle inversion system consists of gate driving IC(20) to divide and drive a multiplicity of gate lines(GL1-GLn) and data driving IC(22) to divide and drive data lines(DL1-DLm). A first to a third flip-flops(24-28) input a vertical synchronous signal(Vscnc) from a first synchronous line(SL1) in common and are connected to a second synchronous line(SL2) in series. The first flip-flop(24) makes a horizontal synchronous signal(Hsync) into 2 frequency division and supplies it to a multiplexer(32) and a first inverter(34). The second flip-flop(26) divides 2 frequency divided horizontal synchronous signal(2Hsync) into 2 and supplies it to the multiplexer(32) and a second inverter(36). The third flip-flop(28) divides 4 frequency divided horizontal synchronous signal(4Hsync) into 2 and supplies it to the multiplexer(32) and a third inverter(38). The first to the third inverters(34-38) invert the frequency divided horizontal synchronous signals and supply them to the multiplexer(34).
Patent KR-20000028410-A (KR)
Title: Method for processing call for packet data communication in radio communication network
Inventor: CHO BONG CHUL
IPC: H04W76/04
Filed: 1998-10-31
Abstract: PURPOSE: A method provides a call processing function to service a radio packet data communication in a radio exchanger of high capacity, by enabling to share a wire/wireless source with other call in establishing an initial call in case that there is no transmission of packet data for a fixed time. CONSTITUTION: A method comprises the processes of: checking a packet data service request by reading a service option value in a call establishing message by sensing a call establishing request of a subscriber; establishing a frame relay path connecting with a network and establishing PPP, IPCP(Internet Protocol Control Protocol) and TCP(Transmission Control Protocol); exchanging packet data through the corresponding traffic path by establishing the traffic path by connecting a switch in the exchanger; checking whether the data packet is transferred or not for a fixed time by observing the connection state of a call through the traffic path; shifting the traffic path to a pause state by releasing switch sources by generating a call release message and by releasing the frame relay path and a terrestrial channel in case that a time is expired; and reestablishing switch sources by checking whether the packet data from the network or the subscriber is transferred again, and reestablishing the terrestrial channel and the frame relay path.
Patent KR-20000033573-A (KR)
Title: Strut of fundamental bolt for controlling interval
Inventor: CHOI KWANG UK
IPC: E04B1/58
Filed: 1998-11-24
Abstract: PURPOSE: A strut of a fundamental bolt for controlling an interval is provided to easily construct a structure by offering the strut to prevent the change of the position of the fundamental bolt in the installation of the fundamental bolt at the installation of the structure. CONSTITUTION: A first and a second rotating partitions(1,2) are fixed bolts(11,21) vertically on the upper face of both sides and are formed hinge grooves in the middle. A connecting hole(6) formed a tap slot(61) in the caliber is combined in bolts(11,21) stood in the first and the second rotating partitions(1,2) vertically. And a protecting stopper(7) formed a spiral portion(71) in the lower part is combined in the upper end of the tap slot(61) formed in the combining hole(6) to prevent the flowing of outer impurities inside the tap slot(61) of the combining hole(6).
Patent KR-19990046234-A (KR)
Title: 생물학적 악취제거 시스템_
Filed: 1998-12-02
Abstract: 본 발명은 종래의 악취물질 처리방법이 운전비용이 과다하고 2차 오염을 유발시키거나 교체 비용이 많이 소요되는 문제점이 있기 때문에, 
     공기를 압송하는 제1 송풍수단과, 악취발생원에 공기를 주입하여 악취물질의 이동을 원활하게 하고 혐기성 미생물을 사멸시키는 공기주입수단과, 상기 악취발생원에서 발생된 악취물질을 포집하는 포집수단과, 세라믹담체에 부착된 호기성 미생물을 이용하여 악취물질을 처리하는 생물학적 악취제거수단과, 상기 포집수단을 통해 포집된 악취물질을 상기 악취제거수단으로 공급하는 흡상의 제2 송풍수단으로 구성됨으로써, 
     악취발생원의 악취물질을 포집하여 호기성 미생물과 관련 재료로 처리하여 악취물질을 제거하게 되므로 매립지등에서 발생되는 유해가스를 조기에 안정화시킬 수 있고 악취제거가 용이할 뿐만 아니라 경제적인 이점이 있는 생물학적 악취제거 시스템에 관한 것이다.
Patent KR-20000023864-A (KR)
Title: Doorframe member assembled with inner door, outer door, and stopper and assembling method thereof
Inventor: JI SEONG HAE
IPC: E06B1/06
Filed: 1998-12-10
Abstract: PURPOSE: A door frame member is provided to be easily repaired and maintained and to have a variety in size by assembling a stopper between outer doors. CONSTITUTION: A door frame member(1) is composed of an inner door(2), an outer door(3), and a stopper(11). The stopper is assembled at the outside of the door frame member, which is a space between the outer door and the inner door for working as the sill of the door frame in case of installing the door frame. Herein, the stopper is produced by cutting a board into a necessary size. The door frame member is assembled by assembling the inner door and the outer door to constitute a double door and by assembling the stopper after the double door at the assembling position of the door frame at the wall or at a bottom. The degree of freedom in the size is improved by cutting the stopper into a necessary size and by cutting the inner door to be corresponded to the thickness of the wall.
Patent KR-19990024147-A (KR)
Title: 투명사각관 관통형 다공다단 흡음, 방음판
Filed: 1998-12-14
Abstract: 본 발명은 비교적 가늘은 투명 사각파이프를 다수개 쌓아놓은 다공 파이프형태로, 파이프의 구멍크기와 일정한 비율의 (다소 길쭉한) 파이프 길이를 정하여 다소의 공간을 주고 다단 장착하는 투명사각관 관통형 다공다단 흡음, 방음판이다.
Patent KR-19990063148-A (KR)
Title: 워드 라인의 전압을 제어할 수 있는 메모리
IPC: G11C11/408
Filed: 1998-12-17
Abstract: 메모리 어레이에 있어서, 게이트가 선택된 워드 라인에 접속된 트랜지스터의 주 도전 경로의 도전 상태를 턴 오프시키기 위해 턴 오프 전압을 메모리 어레이의 선택된 워드 라인에 선택적으로 인가하고, 선택된 워드 라인에 증가된 턴 오프 전압을 선택적으로 인가하기 위한 디코딩 회로가 개시된다.  상이한 값의 턴 오프 전압은 게이트 유도 드레인 누설(GIDL)에 대한 메모리 어레이의 자화도를 테스트하기 위해 그리고, 감소된 누설을 가지는 동작을 위해 워드 라인에 인가되어지는 턴 오프 전압의 최적 범위를 결정하기 위해 사용될 수 있다.
Patent KR-20000040072-A (KR)
Title: Common bus switching system and method for control thereof
Inventor: KIM DONG SEONG
IPC: G06F13/36
Filed: 1998-12-17
Abstract: PURPOSE: A common bus switching system and a method for control thereof is provided to control switching in the requested order of accessing a common bus by checking information on a bus request source which requests access to the common bus, and storing the result for continual control. CONSTITUTION: A common bus switching system includes the following units. A single common bus transmits/receives data generated from at least one bus request source. A bus request checking unit simultaneously checks whether the bus request bus requests the occupancy of the common bus or not. A memory unit stores information on the request of the occupancy of the common bus checked by the bus request checking unit, and outputs the same in the storing order. a bus occupancy determination unit provides a signal for accessing the common bus to the bus request source corresponding to the memory unit. In addition, a method for control of the system includes the following steps. It is simultaneously checked if at least one bus request source requests the access to the common bus. If there is information on the request of the occupancy of the common bus obtained in the above checking step, this information is stored in order. If the bus request source is in the idle state wherein it can access the common bus, a signal for accessing the common bus is provided to the bus request source.
Patent KR-20000041109-A (KR)
Title: Method for automatically executing shell command of exchange
Inventor: BYUN SANG GU
IPC: G06F9/00
Filed: 1998-12-21
Abstract: PURPOSE: A method for automatically executing a shell command of an exchange, is provided to debug by loading/executing the shell command executing a recognition function without changing a software, in an error of function such as an inner processor of the exchange. CONSTITUTION: A method for automatically executing a shell command of an exchange, in an exchange having a RAM disc function, contains processes. A first process is to draw and to compile program with a specific language for recognizing an error, if the error is detected in a device within the exchange, to apply to a hard disc driver of a maintenance processor within the exchange. In a second process, each processor stands by until receiving a command through a cathode ray tube(CRT), if running a shell block within the maintenance processor and a main processor and telephony processor within the exchange. A third process is to execute a shell function actually according to data and a return signal inputted through the CRT, and then to check that the inputted data is an inner command of the shell block, or an external command. A fourth process is to executing a corresponded shell command immediately, if the checked within the exchange data is the inner command. A fifth process is not to do immediately, if the external command. A sixth process is to confirm the external command, and to output and return an error message through the CRT, if the shell command is not existed. A seventh process is to transmit the shell command to areas of each processor with the RAM disc, to copy the transmitted data to a memory.
Patent KR-20000044568-A (KR)
Title: Drain-back method of back tracking data and its device
Inventor: NO JAE SEUNG
IPC: G06F9/38
Filed: 1998-12-30
Abstract: PURPOSE: A drain-back method of back-tracking data and its device are provided to drain back back-trackingd data in a decoder of a receiver chip used to receiving satellite broadcasts. CONSTITUTION: A drain-back method of back-trackingd data consists of six steps. At a first step, the received data are divided to a first and a second group. At a second step, the first and the second data are stored at least in one memory device. At a third step, the data of the first group in the memory device are reversely chased. At a fourth step, the chased data are drained back. At a fifth step, the drained data of the first group are stored in a auxiliary memory device in order. At a sixth step, while the data of the first group stored in the auxiliary memory device are output, the data of the second group drained back from the memory device are stored the auxiliary memory device in order.
Patent KR-20000044958-A (KR)
Title: Method for forming field oxide of semiconductor device
Inventor: KIM TAE HAN
IPC: H01L21/76
Filed: 1998-12-30
Abstract: PURPOSE: A method for forming a field oxide of a semiconductor device is provided which can solve the defect of the prior method by reducing a step of a top part of the field oxide after patterning a mask layer and the oxidation process. CONSTITUTION: A method improve the planarization of a surface and improve the reliability of a device by patterning a mask layer for a side wall to be form vertically in PBLOCOS(Poly Buffered LOCOS) process and by reducing a step of a top part of a field oxide(15) after oxidation process. The method comprises the steps of: patterning a nitride film, a polysilicon layer and a pad oxide in sequence with a photolithography and etching process using an isolation mask after forming the nitride film, the polysilicon layer and the pad oxide on a silicon substrate; forming a field oxide on the revealed part of the silicon substrate by performing an oxidation process using the patterned nitride film, polysilicon layer and pad oxide as a mask; performing a sputtering process to planarize the surface part of the field oxide; etching the surface of the field oxide after removing the nitride film; and removing the polysilicon layer and the pad oxide in sequence.
Patent KR-20000045348-A (KR)
Title: Method for forming pzt film of semiconductor device
Inventor: OH HUN SANG
IPC: H01L21/20
Filed: 1998-12-30
Abstract: PURPOSE: A method for forming a PZT(Pb(Zr,Ti)O3) film of a semiconductor device is provided to achieve the superior quality of the semiconductor device by firstly heating the cell portion through a rapid heat treatment process. CONSTITUTION: A PZT film(3) is formed on a lower substrate(11). An antireflection coating(15) is formed on the PZT film(3). The antireflection coating(15) is patterned by using a photolithography process, wherein the antireflection coating(15) remains only in an area from which elements are manufactured. Then rapid heat treatment process is performed by using a halogen lamp(17). After removing the antireflection coating(15), the PZT film(3) is pattern by using a photolithography process. The antireflection coating(15) includes a silicon oxide or a silicon nitride.
Patent KR-20000046600-A (KR)
Title: Electric field absorbing optical modulator with n(-)-i-n(+) configuration
Inventor: CHOI YOUNG WAN
IPC: G02F1/00
Filed: 1998-12-31
Abstract: PURPOSE: An electric field absorbing optical modulator with N(-)-I-N(+) configuration is provided to implemented the optical modulator with wells doped with different concentrations. CONSTITUTION: An electric field absorbing optical modulator with N(-)-I-N(+) configuration includes a first N type material layer, an intrinsic material layer and a second N type material layer. The first N type material layer is doped at a predetermined concentration. The intrinsic material layer receives optical light for optical modulation and is formed on the surface of the first N type material layer. The second N type material layer is doped at a concentration lower than the predetermined concentration for the first layer.
Patent KR-19990036265-A (KR)
Title: 회전 단조로내의 산화철을 환원시키는 방법
IPC: C22B1/216
Filed: 1996-08-07
Abstract: 본 발명에 따른 산화철을 적어도 부분적으로 환원시키는 방법은 (ⅰ) 회전 단조로의 바닥위에 (a) 철광석 미분과 미립 탄소 물질의 혼합물 및/또는 (b) 철광석 미분과 미립 탄소 물질의 덩어리인 미세-응집물로 이루어진 반응물층을 형성하는 단계와, (ⅱ) 상기 산화철이 부분적으로 환원되도록 상기 회전 단조로내의 상기 혼합물및/또는 상기 미세 응집물을 가열하는 단계를 포함한다. 상기 혼합물및/또는 미세-응집물은 회전 단조로내에서 가열되어 적어도 산화철이 환원된다. "미세-응집물은 직경이 1400미크론 이하(500미크론 이상이 바람직함)인 미세 덩어리를 의미하한다. 부분적으로 환원된 산출물은 금속 철의 제조에 사용된다. 또한, 산화철을 적어도 부분적으로 환원시키는 장치가 개시되고, 상기 장치는 (ⅰ) 철광석 미분과 미립 탄소 물질의 미세-응집물을 형성하기 위한 수단과,(ⅱ) 상기 미세-응집물 형성 수단에 의해 생성되는 미세-응집물의 산화철을 적어도 부분적으로 환원시키기 위한 회전 단조로를 구비한다. 상기 산화철 환원 방법에 의하면, 산화철 미분 및 석탄을 조립화(造粒化; pelletization)하지 않고 회전 단조로의 가동이 가능해 진다.
Patent KR-19990044056-A (KR)
Title: 분극혼화성의 버퍼층을 가지는 금속절연체반도체구조
IPC: H01L27/108
Filed: 1996-08-19
Abstract: MIS디바이스(20)는 반도체기판(22), 실리콘질화물버퍼층(24), 강유전체금속산화물초격자물질(26), 귀금속상부전극(28)을 포함한다. 적층형초격자물질(26)로는 스트로튬비스무트탄탈레이트 스트로튬비스무트니오베이트, 또는 스트로튬비스무트니오브탄탈레이브가 바람직하다. 이 디바이스는, 적층형초격자물질의 퇴적에 앞서 반도체기판상에 실리콘질화물의 형성을 포함하는 방법에 의해 구성되는 것이 바람직하다. 적층형초격자물질을, 프리커서용액의 가열과 동시에 적층형초격자를 생성하는 액체 폴리옥시알칼리레이트드 금속유기프리커서를 사용하여 퇴적시키는 것이 바람직하다. 프리커서액체의 건조시의 UV노출은 최종결정이 C축배향성을 갖도록 하며, 그 결과 박막전기적 고유특성이 향상된다.
Patent KR-19990064252-A (KR)
Inventor: SLOCUM RAY G
IPC: A23L3/10
Filed: 1996-10-15
Abstract: 살균될 식용품을 수납하며, 일체로된 또는 봉합된 바닥부를 구비하고, 용이하게 눌러 절첩시킬 수 있는 박벽 콘테이너(11)이 개시되었다. 빈 콘테이너에는 콘테이너의 내측을 향해 오목형으로 경사지도록 부착되거나 또는 일체로 형성되는 일단부가 구비되어 있다. 액화 불활성 가스 또는 고체 불활성 가스가 상기 콘테이너 내에 충전된다. 상기 콘테이너는 상기 액화 또는 고체 불활성 가스가 완전히 기화되기 전에 오목형 단부(13)에 의해 밀봉된다. 상기 단부는 살균후 잔여하는 압력에 의해 부풀어지지 않는다. 상기 압력은 불활성 가스의 압력효과로 인해 발생된다. 상기 압력은 뜨거운 수증기 또는 스팀 등이 냉각됨에 의해 식용품의 상부에서 발생하는 진공을 극복하고 상기 콘테이너에 필요 강도를 부여할 수 있을 만큼 충분해야 한다.
Patent KR-19990082433-A (KR)
Title: 예열 철계 스크랩 제조방법 및 장치
IPC: C21C5/42
Filed: 1997-02-13
Abstract: 여러 가지 사이즈와 형상을 가진 철계 스크랩편을 융착을 피하면서 효율적으로 예열하기 위하여, 철계 스크랩을 용융하는 용융로의 전단계에서, 로타리킬른형 예열로와 샤프트로형 예열로를 평행으로 설치하고, 쌍방예열로로부터 예열된 스크랩을 용융로에 장입한다. 샤프트로형 예열로와 용융로사이에 댐퍼를 설치하고, 용융로 로부터의 배가스가 샤프트로형 예열로에 직접 유입되는 것을 방지하면서 로타리킬른형 예열로에 유입시킨다. 로타리킬른형 예열로를 통과한 배가스를 샤프트로형 예열로에 바람직하게는 위로부터 유입케하고 아랫쪽으로 배출한다. 로타리킬른형 예열로 및/ 또는 샤프트로형 예열로에는 배가스중의 가연성분을 연소시키기 위한 공기 또는 산소가스포트를 설치한다.
Patent KR-19990082540-A (KR)
Title: 수정 발진기용 온도 보상 회로 및 그 제조 방법
IPC: H04B1/40
Filed: 1997-11-25
Abstract: 통신 장치(200)내에 이용된 수정 발진기 모듈(12)용 온도 보상(TC)회로(10).  통신 장치(200)의 현존 마이크로컨트롤러(210)는 TC 디지털 데이터(30)를 수정 발진기(18)에 제공하는데 이용된다.  이러한 방식에 의해, 수정 발진기 모듈(12)은 온-보드 메모리를 필요로하지 않기 때문에 실질적으로 비용이 줄어든다.  TC 디지털 데이터(30)는 수정 발진기 주파수를 제어하는 D/A 컨버터내의 TC 신호(22)로 전환된다.  온도에 대한 무선 전압 조절기 변동을 보상하기 위해, 수정 발진기 모듈(12)은 특정으로 조절된 전압(36)을 D/A 컨버터에 제공하여 D/A 컨버터로부터의 TC 신호(22)가 본질적으로 전압 조절기(34)에서의 전압 변동을 보정하게 하는 온-보드 전압 조절기(34)를 포함한다..  이와 같은 구성을 통해, 출력 주파수(20)의 안정성이 5ppm에서 대략 2ppm으로 향상된다.