baber/WOPTO huggingface dataset:
Patent KR-20000045346-A (KR)
Title: Method for fabricating decoupling capacitor
Inventor: LEE JONG MUN
IPC: H01L29/772
Filed: 1998-12-30
Abstract: PURPOSE: A method for fabricating a decoupling capacitor is provided to improve a device characteristic and a reliability by connecting a dummy capacitor to a word line. CONSTITUTION: A method for fabricating a decoupling capacitor comprises forming a device isolation layer(2) on a semiconductor substrate(1) in order to define an active region. Word lines(3) are formed on the semiconductor substrate(1). A first and second interlayer dielectrics(4) are formed on an entire surface. A contact hole is formed so as to expose the word line on the isolation region, and a polysilicon film(10) is deposited on an entire surface. A sacrificial oxide layer(11) is formed on the polysilicon film(10). The polysilicon film(10) and the sacrificial oxide layer(11) are etched by a storage electrode mask. A spacer(12) is formed at both sidewalls of the layers(10,11). After removing the sacrificial oxide layer(11), a decoupling capacitor connected to the word line is formed by forming a dielectric film and a plate electrode sequentially.
Patent KR-20000045814-A (KR)
Title: Communication device and method for lan of telecommunication handset
Inventor: HA JEONG WOOK
IPC: H04B7/26
Filed: 1998-12-30
Abstract: PURPOSE: A communication device and a method for LAN of telecommunication handset are provided to connect call between two handset without the relay operation of a base station, thereby excluding the invoice of unnecessary communication fee and reducing the load between the base station and mobile stations. CONSTITUTION: A communication device for LAN of telecommunication handset comprises a switch circuit(10), a mixer(20), a duplexer(30), a transceiver(40), a phase lock and voltage controller(50), a controller(60), a CODEC(70), first and second amplifiers(80,90), a key input(100), a mike(MIC) and a speaker(SPK). The switch circuit(10) is switched by the control signals from the controller(60) in accordance with usage mode to decide a signal path. The mixer(20) decide the band of frequency transmitted/received to/from another handset and locks the phase of decided frequency band. The duplexer(30) switches the signal flow in order that signals are collided.
Patent KR-19990029078-A (KR)
IPC: G09F3/00
Filed: 1996-02-15
Abstract: PCT No. PCT/GB96/00345 Sec. 371 Date Jan. 29, 1998 Sec. 102(e) Date Jan. 29, 1998 PCT Filed Feb. 15, 1996 PCT Pub. No. WO97/04433 PCT Pub. Date Feb. 6, 1997A self-adhesive label (26) carried on a backing of release material (20) comprising a multilaminar label portion (32), a tab portion (40) comprising a sheet which is spaced from the multilaminar label portion (32) and a self-adhesive laminar material (42) overlying and adhered by the self-adhesive surface thereof to the upper surface of the multilaminar label portion (32) and the tab portion (40), a region (48) of the laminar material (42) being disposed between the multilaminar label portion (32) and the tab portion (40) and adhered directly to the backing of release material (20). There is also disclosed a method of making a succession of such labels.
Patent KR-19990036051-A (KR)
Title: 저투과성 열가소성 엘라스토머 조성물을 기체 투과 방지층에 사용하는 공기 주입 타이어 및 이에 사용하는 열가소성 엘라스토머 조성물
IPC: C08L23/22
Filed: 1997-05-02
Abstract: 열가소성 수지 조성물을 연속 상으로 하고 고무 조성물을 분산 상으로 하는 열가소성 엘라스토머 속에 배리어 수지 조성물을 포함하여 이루어진 저투과성 열가소성 엘라스토머 조성물로서, 배리어 수지 조성물이, 열가소성 엘라스토머 속에 편평상으로 분산하여 이루어진 상 구조를 가지며,  유연성이 풍부하고, 내기체 투과성이 뛰어나며 또한 타이어의 경량화를 가능하게 하는 저투과성 열가소성 엘라스토머 조성물로 이루어진 공기 투과 방지층을 갖는 공기 주입 타이어.
Patent KR-19990063758-A (KR)
Title: 재충전이 가능한 자체 동력 추진식 완구 차량
IPC: A63H29/22
Filed: 1996-07-26
Abstract: 본 발명은 완구 차량(3)의 샤시(2) 속에 통합된 전동기(1), 전동기(1)에 접속되어 전동기(1)에 전력을 공급하는 재충전 부재(7), 및 차량 샤시(2)에 부착되어 재충전 부재(7)에 접속되는 접점 부재(8, 8')를 구비하는 재충전이 가능한 자체 동력 추진식 완구 차량에 관한 것이다.  접점 부재는 완구 차량(3)을 안내 장치에 들여보내는 것에 의해 안내 장치 속에 통합되거나 그에 접속된 전력원(13)으로부터 안내 장치의 대응 접점 부재(9, 9')를 경유하여 재충전 부재(7)를 충전시킬 수 있다.
Patent KR-20000064479-A (KR)
Title: 칩을브레이킹하는방법및장치
Filed: 1996-12-13
Abstract: 칩을 브레이킹하는 방법이 상술되었으며, 상기 방법에 있어서 절삭중에 발생되는 칩은 칩과 가공물 사이의 연결부인 전단면에서 파단이 발생할 때까지 전단 변형을 증가시킴으로써 작은 편은 부숴진다.  이러한 것은 적삭중 발생된 칩(1)을 레버(lever)로 형성함으로써 이루어지며, 여기서 칩의 헤드(11)는 제 1 평면(9)으로부터의 힘을 수용하는 로드-리프팅 점(load-lifting point)이며, 칩(1)과 칩 브레이커의 제 2 평면(12) 사이의 접촉면은 지점(fulcrum)이며, 칩을 전단면에 연결시키는 칩의 루트(8)는 전단면에서 파단이 발생할 때까지 재료를 변형시키기 위한 전단면을 따라 작용하는 전단력을 더하는 힘을 가하는 힘을 가하는 점(force-exerting point)이다.
Patent KR-19990082409-A (KR)
Title: 면역분석방법과 그 장치
IPC: G01N33/543
Filed: 1997-02-06
Abstract: 본 발명은 시료(14)의 유출물을 검출하기 위한 분석장치에 관한 것으로, 이 분석장치는 유출물-시약 복합체는 보유하지만 시약과 시료는 통과시키는 거름막(22)을 통하여 시료를 검출수단으로 이송하는 검출가능한 부분을 갖는 시약(15) 투입기와 시료(14) 투입기가 형성된 유체통로를 구비하되, 상기 복합체는 시약과 시료의 임의의 유출물과의 상호작용을 통하여 형성된다. 또 본 장치는 상기 복합체를, 상기 거름막(22)을 통하여 검출수단(30)으로 흐를 수 있는 검출가능한 부분으로 분해시키기 위해 적용되는 물질을 공급하기 위한 공급수단도 추가로 구비하고 있다.
Patent KR-20000051984-A (KR)
Inventor: LEE SANG HYUN
IPC: B66B5/00
Filed: 1999-01-28
Abstract: PURPOSE: A remote failure detecting system for elevator and a method of controlling such a system are provided to accomplish improved reliability and accuracy of failure detection while performing failure detection suitable for each situation. CONSTITUTION: A system comprises an elevator control unit for controlling operation of elevator and outputting failure information for judging whether a failure has occurred and operation information indicative of the current operation state of the elevator; a monitor terminal for receiving the failure information and operation information from the elevator control unit, detecting a failure of elevator, current operation performance, and operation history, and outputting the operation information, performance information, operation history and failure information; and a monitor center for receiving the operation information, performance information,operating history and failure information from the monitor terminal, checking whether a failure of elevator has occurred or not, storing the result of the checking, warning the failure of elevator and displaying the current state of the elevator onto a monitor.
Patent KR-20000059795-A (KR)
Title: 파친코기용 구슬제어장치
Filed: 1999-03-09
Abstract: 본 발명은, 파친코 구슬의 흐름을 임의로 제어하는 파친코기용 구슬제어장치에 관한 것으로, 본 발명의 파친코기용 구슬제어장치는, 전동식 구슬이동수단에 의해 대기 포인트로부터 릴리스 포인트까지 파친코 구슬을 이동시킴으로써 파친코 구슬의 흐름을 제어하도록 한 파친코기용 구슬제어장치에 있어서, 상기 전동식 구슬이동수단의 제어에 사용하는 센서를, 상기 대기 포인트의 바로 뒤에 설치하도록 한 것을 특징으로 하는 것이다.
Patent KR-20000060332-A (KR)
Inventor: HWANG CHEOL JU
IPC: H01L21/32
Filed: 1999-03-15
Abstract: PURPOSE: A method for manufacturing a metal-containing layer is provided to stably form the metal-containing layer on a lower silicon substrate, and to eliminate remaining impurity after forming the metal-containing layer by an annealing process at a relatively low temperature. CONSTITUTION: A method for manufacturing a metal-containing layer on a silicon substrate by a chemical vapor deposition, comprises the step of performing the deposition reaction while using deuterium-containing gas to improve the metal-containing layer. The chemical vapor deposition is performed in the state that a plasma power is applied.
Patent KR-20000061567-A (KR)
Inventor: WOO SANG JUN
IPC: H04N5/445
Filed: 1999-03-27
Abstract: PURPOSE: A method for selecting a channel is to divide a program guide screen into a plurality of areas and display a channel information as the form of image information in each area, whereby a user select a channel and a broadcast program conveniently. CONSTITUTION: The method for selecting a channel comprises steps of dividing a screen into a plurality of areas when a program guiding order is inputted, tuning and decoding broadcast programs in order, capturing a freeze frame and then displaying the freeze frame in each area in order, changing into a channel showing a program selected by a cursor and then displaying the selected program in a main screen. In the step of displaying a program guide screen, the program guide information in an area, on which the cursor is positioned, is displayed into moving images by the tuning and decoding process. The broadcast programs are aligned according to type or title order. The program aligning process is performed by a user or a programmer.
Patent KR-20000061870-A (KR)
Inventor: KIM JIN HYEONG
IPC: H04N1/32
Filed: 1999-03-31
Abstract: PURPOSE: A method is provided to transmit data which are received via one channel to a predetermined fax number by using other channel in a facsimile interlocking with an integrated service digital network(ISDN), so that a transmission speed of data is improved. CONSTITUTION: A first facsimile receives data from a second facsimile, while deciding whether or not to set a multi-address relaying function which retransmits the data to a third facsimile. If so, a transmission speed of the data between the first and second facsimile is stored. After the storage, a call for the data-transceiving is set by dialing a fax number of the third facsimile. The data is received in the first facsimile, and then stored in a specific amount. Finally, the data is transmitted to the third facsimile.
Patent KR-19990083233-A (KR)
Title: 치환된 트리시클릭류
IPC: A61P11/00
Filed: 1999-04-16
Abstract: 신규 트리시클릭류가 패혈증성 쇼크와 같은 질병의 치료를 위해 sPLA 2 가 매개하는 지방산의 방출을 억제하는 화합물의 용도와 함께 기재되어 있다.
Patent KR-20000066704-A (KR)
Inventor: CHOI GYU YONG
IPC: G09C1/00
Filed: 1999-04-20
Abstract: PURPOSE: A robust and fast chaotic cryptograph of digital data and its decipher system are provided to reduce the encryption/decode time. CONSTITUTION: In chaotic cryptographic processing, the digital data is grouped by four bits unit and the unit gets a quantum value of nonlinear eight bits quantum series having 256 quantum values. A chaos time series Y(t)-t is retrieved along a discrete time axis (t) and at the time of discovering Y(t), a time element (t) and a value Y(t-4) in the past by four steps are paired to prepare a ciphering table with the time element (t). Through Y(t) of an assigned code to cipher, one (t)-Y(t-4) is selected to set Y(t-4) as a ciphering code. The decoding processing is reverse of the chaotic cryptographic processing and uses the decoding table without time element. A deciphering table is obtained by retrieving the time series Y(t)-t, obtaining Y(t-4+4) at the time of discovering Y(t-4), and ordering which assigning code the value corresponds to according a previously given assigning table. The arrangement of the assigning codes is optional. This assignment is used as a ciphering key.
Patent KR-20000066736-A (KR)
Inventor: KIM GYU HAK
IPC: H04N7/18
Filed: 1999-04-20
Abstract: PURPOSE: A vehicle image information compressing device using a wavelet transformation is provided to compress a vehicle's image information by using a wavelet transformation, store an image data into a flash memory, and to transmit the image data to a remote position. CONSTITUTION: A photographing part(100) picks up vehicle image running on a road, and outputs a digital vehicle image data. A vehicle detection computer receives a digital vehicle image data from the photographing part, detects a traffic information when occurring event caused by an input program, and determines a wavelet transformation conversion according to a checked result. A compressing part performs a compressing process by means of a wavelet transformation conversion, A storage part stores a compressed image information data therein. A communication part(500) transmits the compressed image information data or a block data stored in the storage part to a remote position. Thereby, the vehicle image information compressing device stores an image data into a flash memory(400), and transmits the image data to a remote position.
Patent KR-20000072865-A (KR)
Inventor: CHOI KYOO YONG
IPC: G06F17/10
Filed: 1999-05-01
Abstract: PURPOSE: A digital computer having a database of a chaos time series is provided for enhancing a problem resolving ability with respect to complex combined problems using a digital computer. CONSTITUTION: In TSP of 16 cities, 16 cities are arranged on a map in TSP. The numbers of 0 through 15 are provided in 16 cities. The number providing method is randomly determined. When the map is located in a bit map coordinate space, it is easy to compute the distance D based on Figure 1 provided by a chaos capable of reading a coordinate of a city, and computing the distance between cities. It is not needed to visually display on the map. The coordinates of the city may be expressed in Table. the visual expression on the map allows persons write during a last judgement. In addition, it is useful when the last output becomes close to the shortest circuit.
Patent KR-20000073422-A (KR)
Inventor: KIM BYEONG GYU
IPC: C09K11/08
Filed: 1999-05-10
Abstract: PURPOSE: A process for preparing novel oxide-based red luminous fluorescent substance by blending calcium, titanium and silicon as a major component with praseodymium as an activator and then with boric acid as a flux is provided which produces long decay luminescent materials having improved long decay time. CONSTITUTION: The process for preparing the oxide-based red luminous fluorescent substance comprises the sequential steps of mixing a calcium compound, a titanium compound and a silicon compound with praseodymium as an activator; adding boric acid as a flux to the mixture; calcining under reducing atmosphere two times and then under oxidative atmosphere one time; and producing long decay phosphors of the formula; Ca1-xTi1-ySiyO3:Prx, (0.00001≤x≤0.1, 0≤y≤0.8). The amount of praseodymium to be added is 0.001 to 10% by mole based on the calcium, the amount of substitution of Si 0 to 80% by mole based on the titanium and the amount of boric acid 0.01 to 20% by weight based on the total weight of the raw material.
Patent KR-20000073743-A (KR)
Inventor: LEE SEONG U
IPC: H04L12/24
Filed: 1999-05-13
Abstract: PURPOSE: A method for restrictively operating a gateway station in a gateway station system, is provided to set up a function restricting a designated gateway station for the corresponding signal message as well as to execute a restrictive operation for the signal message received in the gateway station according to the established function restricting the gateway station lest an unnecessary message caused by the disturbance or the error of a cooperated signal network should flow into the gateway station. In addition, a service request from the signal network or a signal point at which transmission is not allowed in the gateway station is cut off by the method, so that communication service is improved. CONSTITUTION: An instruction restrictively generating signaling termination, including information on a gateway station linkset group actually performing signal termination restriction and information on a corresponding signal termination, are inputted to a gateway station system from an operator. The inputted information is analyzed to determine the availability of signal termination restricting information. First, if a corresponding system is defined as the gateway station system, it is confirmed whether or not the inputted gateway station linkset group is defined. If a linkset group is defined, it is confirmed whether or not inputted signal termination is defined in a message transfer part(MTP). If the corresponding signal termination is defined, or information restricting inputted signal termination is available, corresponding information restricting signal termination is stored in a Database, and delivered to a processor performing a function restricting the gateway station by using a system internal interface. A performing result of a corresponding instruction restrictively generating signal termination is reported to the operator.
Patent KR-19990078580-A (KR)
Title: 휴대폰케이스
Filed: 1999-06-03
Abstract: 본 발명은 휴대폰을 간단하게 팔에 착용하는 휴대폰 케이스에 관한 것임. 휴대폰 케이스는 직포로된 전면판(10)과 덮개부(18)가 연장된 배면판(12)을 신축성 양 측판(14),(16)으로 연결하여 주머니 형태로 형성하고 배면판(14)에 팔에 감아서 착용하는 착용 밴드(22,24),(22a,24a)를 부착하여 연결구(26,28),(26a,,28a)로 고정시키게 되었음.  본 고안에 의하면 휴대폰이 팔에 착용되므로 자유롭게 활동할 수 있음.
Patent KR-20010002172-A (KR)
Inventor: KIM JAE HYEONG
IPC: C22B1/16
Filed: 1999-06-11
Abstract: PURPOSE: An apparatus for controlling angle of charging composite material used in a sintering process is proposed for regulating and maintaining suitable distance toward width by multiple sensors to optimize performance of charging process. CONSTITUTION: A control apparatus of angle to charge composite material for sintering process comprises five sensor parts positioned toward width of a buggy for controlling angles to charge the material in "V" shape, a supporting part (10) to support such sensors, and a control part to change angle of such supporting part into reverse-"V" shape. The control part is controlled at front and rear directions. The apparatus includes further a V/A conversion part (50), a control system (60) for instrumentation part to memory, operate and determine instrumental signals and a monitor (61) to illustrate such determined result.
Patent KR-20010003853-A (KR)
Inventor: JUNG SEO YEONG
IPC: A61K9/16
Filed: 1999-06-25
Abstract: PURPOSE: An arginate-microsphere used for oral vaccine is provided, which delivers antigens effectively through a pathway by Peyer's patch and a by-pathway of lymphatic gland with its small size; shows higher immunity property; improves level of serum and mucous membrane when administrated with cholera toxin or cholera toxin B unit; so can be used as an effective oral vaccine. CONSTITUTION: A process for the preparation of arginate-microsphere used for oral vaccine comprises: adding a solution containing antigen protein(or antigen protein and immuno-adjuvant) to arginate solution; adding n-octanol solution containing an emulsifier to the antigen protein(or antigen protein and immuno-adjuvant)-arginate mixed solution, and homogenizing; adding calcium chloride-contained n-octanol using a sprayer while stirring the emulsion slowly; adding calcium chloride solution to saturate the emulsion, and gelating microspheres; dehydrating the microspheres by adding dehydration solvent; filtering the microspheres, washing with alcohol, and drying in vacuum state.
Patent KR-20010009817-A (KR)
Inventor: NAM JEONG HUN
IPC: H01L21/31
Filed: 1999-07-14
Abstract: PURPOSE: A method for forming a shield layer of a semiconductor device is provided to prevent from overhang and combustion of a photoresist without dropping of data transmission speed. CONSTITUTION: A metal wire(42) is formed on a substrate(40). The first shield layer(46) covers the material wire(42) and the substrate(40). The first shield layer(48) fills up between the metal wires(42). The second shield layer(48) is made of a flexible oxide layer. The third shield layer(50) is doped on the second shield layer(48) and a photoresist layer(52) is built on the third shield layer(50). By patterning the photoresist layer(52), a photoresist pattern is produced with exposing a little part of the third shield layer(50). The exposed third shield layer is etched by using the photoresist pattern as an etching mask. After removing the photoresist pattern, next steps are executed following a general manufacturing method like an annealing.
Patent KR-20010011530-A (KR)
Inventor: KWAK BO YEON
IPC: G01N33/569
Filed: 1999-07-28
Abstract: PURPOSE: A hybridoma and a fungus detection method using a monoclonal antibody produced from the same are provided. Thereby, Aspergillus, Penicillium, Fusarium which occur in food, are diagnosed rapidly and easily by using the same with ELISA. CONSTITUTION: A hybridoma (KCTC 0628 BP) is characterized by comprising the following steps: (i)after culturing Aspergillus flavus, filtrating to collect EPS(extracellular polysaccharide); (ii)after freeze-drying EPS, dissolving it in a buffer solution; (iii)immunizing a mouse with emulsion manufactured using Freund's adjuvant; (iv)obtaining a hybridoma(1G11) for producing a monoclonal antibody which is specific for EPS of Aspergillus sp., Penicillium sp. by separating and purifying through injecting a myeloma cell and hybridoma into ascites of mouse. The fungus detection method uses sandwich ELISA which measures absorbancy at 450 nm.
Patent KR-19990078919-A (KR)
Title: 원적외선 방출 전기 온풍기
IPC: F24H3/00
Filed: 1999-08-20
Abstract: 본 발명은 전기를 이용하여 난방을 하는 전기 온풍기에 관한 것으로, 특히 난방과 함께 인체에 유용한 원적외선을 방출시키는 원적외선 방출 전기 온풍기에 관한 발명이다. 
     본 발명에 의한 원적외선 방출 전기 온풍기는 외부로부터 전기를 공급받아 발열하는 히터부와, 상기 히터부에 의해 발생된 열을 받아 원적외선을 발생시키는 원적외선 발생 수단과, 상기 히터부로부터 발생된 열의 외부 유출을 차단하기 위해 상기 전기 온풍기의 외벽에 형성된 단열부와, 외부로부터 상기 전기 온풍기 내부로 공기를 유입하기 위한 공기 주입 수단과, 상기 전기 온풍기의 내부로부터 외부로 더운 공기를 방출하기 위한 공기 방출 수단과, 상기 공기 주입 수단에 의해 유입된 공기가 더운 공기가 되어 상기 공기 방출 수단으로 방출될 수 있도록 상기 히터부 주위를 통과하도록 형성된 공기 이동 통로를 구비한다. 
     본 발명에 의한 원적외선 방출 전기 온풍기는 상기 히터부로부터 발생된 열을 축열하기 위한 축열 수단을 추가로 포함할 수 있다. 
     또하 상기 원적외선 발생 수단은 상기 전기 온풍기의 전면부에 형성된 상기 단열부상의 외부면 또는 내부면 또는 상기 축열 수단 사이에 형성된다. 
     또한 상기 축열 수단과 상기 원적외선 발생 수단을 하나로 할 수 있다. 
     본 발명에 의한 원적외선 발생 수단은 황토 또는 맥반석 또는 황토 및 맥반석의 혼합물로 이루어진 벽돌 형상 또는 판상 형태, 또는 도포 혹은 스프레이 형성된 구조물이 바람직 하다.
Patent KR-20000017554-A (KR)
Inventor: UHARDI TRAZOLA
IPC: C08L23/00
Filed: 1999-08-26
Abstract: PURPOSE: A thermoplastic elastomer vulcanized rubber producible by vulcanizing a hardening composition containing thermoplastic olefin resin and hardening star-branched rubber is provided which has good processability in an injection molding, an extrusion molding and a blowing molding. CONSTITUTION: A thermosetting elastomer composition containing i)15-80 wt.% of thermoplastic polyolefin resin selected from a single polymer or a copolymer of a C2-7 monoolefin monomer; ii)85-20 wt.% of star-branched rubber(copolymer) composition producible by reacting 85-99.5 wt.% of 4-7C-isomonoolefin and 0.5-15.0 wt.% of 4-14C-multiolefin based on the isoolefin and multiolefin monomer and 0.5-5.0 wt.% of branching agent such as a)-£-R4-CR1=CR2-Cr3X-R5-|-m in which R1.R2 and R3 are independently H or 1-15C, preferably 1-4C alkyl, R4,R5 are independently 1-15C, preferably 1-4C alkylene, X is halogen, m is 4-100, b)-£-R4-CR6X-R5-|-n in which R5 is 1-15C, preferably 1-4C alkyl, R4,R5 are independently 1-15C, preferably 1-4C alkylene, X is halogen, m is 4-100, c)-£-R4-CR7=CR8-R5-|-p in which R7,R8 are independently 1-15C, preferably 1-4C alkylene, X is halogen, p is 7-1,000, based on the isoolefin and multiolefin monomer is described. The composition has good processability in an injection molding, an extrusion molding and a blowing molding.
Patent KR-20010020046-A (KR)
Inventor: MUN SEONG HAK
IPC: G09G3/291
Filed: 1999-08-31
Abstract: PURPOSE: A method for implementing gradation of a PDP(Plasma Display Panel) is provided to enable the PDP to implement linear 256 gradations by differently giving a weight given during a discharge sustaining period of each subfields and eliminate contour noise. CONSTITUTION: A frame for implementing gradation is divided into 9 subfields each having a weight by reconstructing the past 8 bit data to 9 bit data. A weight of discharge sustaining period given to the first subfield corresponding to the least significant bit remains 1 and a weight of discharge sustaining period given to the ninth subfield corresponding to the most significant bit remains 128. Weights of discharge sustaining periods given to remaining adjacent second to seventh subfield are respectively given ratio of 2:4:6:12:24:48:96 which are middle values of weights ratio 2:4:8:16:32:64 adopted in the past 8 bit data. If a middle value of a remaining subfield is an odd number, 1 is added to the middle value to make the value an even number. The 9 subfields are selectively driven so that difference of number of subfield emitted between adjacent gradation values becomes the minimum.
Patent KR-20010020064-A (KR)
Inventor: BAN BONG CHAN
IPC: C04B18/04
Filed: 1999-08-27
Abstract: PURPOSE: Provided is a preparation method of cement filler having antibacterial and electromagnetic wave shielding effects by using waste printing circuit board(PCB) and Cu powder CONSTITUTION: The method comprises the steps of: grinding waste PCB comprising 10-25% of Cu, 25-50% of epoxy resin, 15-40% of glass fiber, 5-10% of paper, 0.2-0.3% of Sn and 3-4% of Ni; drying: sieving to be 0.001-1mm of size; adding Cu to contain 15-30%(based on the weight ratio of cement) of mixed powder of PCB and Cu; mixing homogeneously.