baber/WOPTO huggingface dataset:
Patent KR-19990067010-A (KR)
Title: 골결핍 상태의 치료용 조성물 및 그 치료방법
IPC: C07D285/16
Filed: 1996-10-23
Abstract: 하나 이상의 원자를 포함하는 링커, 또는 두 방향족계를 공유결합에 의해 1.5-15Å거리에 위치하도록 공유결합을 포함하는 것으로 정의되는 링커를 통해 공유결함으로 연결된 두 방향족 체계를 함유하는 화합물은 골결핍과 관련된 상태를 치료하는데 효과적이다. 골성장을 촉진하거나 골흡수를 저해하는 부가적인 작용제과 배합하여 또는 단독으로 상기의 화합물을 척추동물에게 투여할 수 있다. 상기 화합물을 투여하기전에, 상기 화합물이 골형태형성 단백질과 관련된 프로모터에 연결된 리포터 유전자의 전사에 미치는영향 및/또는 모델 동물체계에서 두개관의 성장을 자극하는 능력을 측정함으로써 활성에 대해 화합물을 선별할 수 있다.
Patent KR-19990071967-A (KR)
Title: 전자 폭발개시 장치
IPC: F42B3/12
Filed: 1996-12-04
Abstract: 예정된  비점화전압을  갖는  점화소자와  예정된  비점화전압을  포함하는  전압범위내의  전압에서  작동하는  작동회로를  갖는  점화소자를  포함하는  전자폭발개시장치이다.
Patent KR-19990077324-A (KR)
Title: 고정 못
IPC: A61B17/68
Filed: 1997-01-08
Abstract: 본 발명은 뼈 대체 물질로 충전된 뼈 보이드를 둘러싸는 내생 뼈에 커버링 막을 고정하기 위해 생체재흡수가능한 플라스틱 물질로 제조된 고정 못으로서, 압력 및/또는 타격 도구로 충격을 가할 수 있고 못에 결합된 대경의 못 헤드와, 기본적으로 원통형인 홀더 부분을 포함하며 못에 결합된 소경의 못 샤프트와, 못 팁쪽의 방향으로 테이퍼진 쟈켓 원뿔 표면을 구비한 팁 부분을 구비하는 고정 못에 있어서, 상기 플라스틱 물질은 적어도 부분적으로 비결정성(비결정)이며, 체온의 범위내에서 유리 전이 온도를 갖고 있으며, 상기 못 샤프트의 영역내의 상기 플라스틱 물질은 고정 못의 종방향 축에 기본적으로 평행하게 되어 있는 바람직한 분자 방향을 갖고 있는 고정 못을 제공한다.
Patent KR-19990081907-A (KR)
Title: 코팅 다이에 의해 기판을 코팅하는 방법 및 장치와 코팅 재료를코팅 다이에 공급하는 장치
IPC: B05D1/26
Filed: 1996-09-06
Abstract: 본발명에 따라, 평면 기판이 테이블의 지지 표면상에 놓이게된다. 상기 지지 표면이 2μm 이하의 평면도를 갖는다. 테이블은 표면에서 복수의 구멍을 갖는다. 평면 기판이 기판을 지지 기판과 밀접하게 접촉하게 되도록 구멍을 통해 흡입된다. 그것은 꼬아짐 및 뒤틀어짐 등의 판의 변형을 제거한다. 코팅 다이는 테이블위에서 이동되어 코팅 재료를 기판상에 인가한다. 연속해서, 일정한 두께의 코팅이 기판상에 형성된다.
Patent KR-19990081994-A (KR)
Title: 미니 셀 크기의 표시 방법
IPC: H04L/
Filed: 1997-01-24
Abstract: 본 발명은 접속이 진행되고 있는 동안의 개별 접속에 속하는 미니 셀들의 크기를 변경하는 방법에 관한 것이다. 제어 미니 셀이 이러한 목적에 사용된다. 제어 미니 셀은 별개의 접속, 또는 미니 셀 크기가 변경되는 동일한 개별 접속으로 전송된다. 시스템 설계에 따라서 제어 미니 셀은 장거리 통신 회로망의 동작 및 유지보수 시스템에 의하여 제어 플레인에서 조정되거나, 또는 전송장비에 의하여 트래픽 플레인에서 조정된다.
Patent KR-19990087232-A (KR)
IPC: B24D11/00
Filed: 1997-01-15
Abstract: Supersize formulations in which the binder medium is hydrophobic and radiation-polymerizable permits the use of larger quantities of supersize additives including additives that are water-soluble.
Patent KR-19990087523-A (KR)
Title: 신속 교체식 롤 커버
IPC: B65H27/00
Filed: 1997-02-11
Abstract: 한 측면으로부터 외부로 돌출된 복수의 표면 스템(28)을 갖는 직물 견인 롤 커버(20)가 개시되었다.  표면 스템이 형상이 균일하고 견인 롤 상에 설치되며, 집단으로 직물 웨브와의 유효 접촉면을 형성한다.  복수의 후크 스템(55)이 견인 롤 커버의 대향 측면으로부터 돌출한다.  후크 스템은 견인 롤 커버를 견인 롤에 부착된 루프 구조 재료(45)를 갖는 원통형 견인 롤에 해제 가능하게 부착시키도록 되어 있다.  직물 견인 롤을 제조하는 방법과, 후크와 패스너의 대향한 고정 장치를 사용하여 직물 견인 롤의 직물 결합 외표면을 교체하는 방법도 개시되었으며, 루프 재료는 견인 롤의 원통형 외표면 상에 설치된다.  또한, 전진하는 직물 웨브와 결합하기 위한 소정 마찰 특성을 갖는 외표면(251)을 갖는 직물 견인 롤 커버가 개시되었다.  그 대향면 상에는, 견인 롤 커버가 그 사이에 위치된 재위치 가능한 감압성 접착제에 의해 직물 견인 롤의 원통형 외표면에 부착되어 있다.  직물 견인 롤을 제조하는 방법과 제위치 가능한 감압성 접착제를 사용하여 견인 롤 커버를 교체하는 방법도 개시되었다.
Patent KR-20000010890-A (KR)
Title: Method for decoding data signals using fixed-length decision window
Inventor: JOHANSSON KARIN CECILIA
IPC: H04L1/00
Filed: 1997-05-12
Abstract: PURPOSE: A method for decoding is provided to decode transmitted data signals using a fixed-length decision window in which multiple transition paths have converged at a single state. CONSTITUTION: A method for decoding a transmitted data sequence using a full-length decision window, such as in a trellis decoder, in which transition paths have converged. Transition paths within the decision window and their associated soft values are compared with a stored candidate for the next best path and associated stored soft value. Based on the comparison, and whether the transition paths and the best path have merged during the decision window, the decision window is shifted or the stored candidate for the next best transition path and associated stored soft value are replaced by the possible candidate for the next best path and associated soft value. The decision window is then shifted.
Patent KR-20000010939-A (KR)
Title: Dust removal apparatus
Inventor: LINDEN ANDERS TOMMY
IPC: D21G3/00
Filed: 1997-03-06
Abstract: PURPOSE: A dust removal apparatus is provided to treat and remove the dust being emitted while treating a moving web of a fiber material. CONSTITUTION: An apparatus for removing dust released, for instance, during the production of a soft crepe paper web (1) which is creped off a Yankee cylinder (2) and spread laterally comprises a dust suction box (18) consisting of a housing (20) with an inner suction chamber (21), the housing (20) having a first inlet (24) in the form of a suction gap, a main part (25) and first and second parts (26, 27) which define said suction gap (24) between them. According to the invention the main part is in the form of part of a cylinder to provide a corresponding curved inner side (34) in the suction chamber, and the suction gap comprises an outer gradual throttling (29) and an inner gradual enlargement (30), said throttling and enlargement merging at a transition (31) where said throttling is maximal. The first inlet forming part (26) comprises a flat surface (33) that defines its side of said enlargement whereas the second part (27) forming the inlet comprises both a curved surface (36) having predetermined radius and such an arc length that it defines the whole of its side of the throttling (29) and an initial part of the enlargement (30), and also an inner, flat surface (37) extending at a tangent from the curved surface (36) and forming an acute angle(alpha) with a tangent to the curved surface at said transition.
Patent KR-20000011105-A (KR)
Title: Process and carrier for the production of isomaltulose by immobilized micro-organisms
Inventor: SARKKI MARJA-LEENA
IPC: C12N11/12
Filed: 1997-05-16
Abstract: PURPOSE: A method for preparing isomalt used as a sweetening agent is provided which is prepared by isomerization sucrose into isomaltolose using the immobilized microorganisms. CONSTITUTION: Isomaltulose (6-O-alpha-D-glucopyranosyl-D-pructofuranose) is prepared by contacting a solution containing sucrose with viable isomaltolose-forming microorganisms immobilized on a porous particulate carrier material comprising a weakly basic anion exchange material in the form of an inert and substantially noncompressible solid matrix and recovering the isomerization product from the solution. Isomalt is prepared by contacting a solution containing sucrose with viable isomaltolose-forming microorganisms immobilized on a porous particulate carrier material comprising the weak basic anion exchange material, hydrogenating the isomaltulose to isomalt and recovering the product from the solution. The weak base anion exchange material is a material having primary, secondary and/or tertiary amino groups.
Patent KR-20000015896-A (KR)
Title: Hybrid tubular guide wire for catheters
Inventor: JACOBSEN STEPHEN C
IPC: A01B5/00
Filed: 1997-05-21
Abstract: PURPOSE: A hybrid tubular guide wire device is provided to include a first and a second rectangular shaped tubular bodies, to have a flexibility toward a transverse direction, and to have an improved rotary property. CONSTITUTION: A hybrid tubular wire (320) includes first and second elongate tubular bodies (340, 344), fitted end to end, and about which a catheter may be threaded for guidance to a body target location in a vasculature passageway of a body. The first elongate body (340) has greater rotational stiffness than the second elongate body (344), which has greater lateral flexibility. Cuts (362) are formed either by saw cutting, laser cutting or etching at spaced apart locations along the length of the second elongate body (344) to increase its lateral flexibility. At least some of the cuts extend through the tubular body to the interior cavity to allow the escape of fluids flowing in the cavity.
Patent KR-20000016577-A (KR)
Title: Method for producing optically active 1-phenylethylamines
Inventor: MERZ WALTER
IPC: C07C209/88
Filed: 1997-06-09
Abstract: PURPOSE: A manufacturing method for an optically active 1-phenylethylamine is provided to be used for synthesizing an activating ingredient having a sterilizing property and pharmaceutic property as a medium. CONSTITUTION: The invention concerns a new method for producing optically active 1-phenylethylamine of formula (I), in which X stands for halogen or methyl and n stands for the digits 0, 1 or 2, wherein (a) racemic 1-phenylethylamine of formula (I) are reacted with (S)-(-)-phenylcarbamate lactic acid in the presence of an aliphatic or aromatic hydrocarbon and in the presence of a lower aliphatic alcohol, wherein the reaction components are measured so that for every mol of racemic amine, between 0.25 and 0.5 mol of (S)-(-)-phenylcarbamate lactic acid are present, the reaction mixture is then concentrated at a liquid-phase temperature of up to 40°C, the resulting solid product is separated, treated with diluted, aqueous alkaline lye in the presence of a hydrocarbon, and the respective (R)-amine is isolated by distillation from the organic phase e, and if necessary, (b) the mother liquor remaining after the separation of the solid product is reacted in the presence of a lower aliphatic alcohol with (S)-(-)-phenylcarbamate lactic acid, wherein the reaction components are measured so that the molar quantity of (S)-(-)-phenylcarbamate lactic acid is twice as great as the quantity of (R)-amine still remaining in the mother liquor, the reaction mixture is then concentrated at a liquid-phase temperature of up to 40°C, the resulting solid product is separated and the (S)-amine is isolated by distillation from the mother liquor.
Patent KR-19990067986-A (KR)
Title: 로딩로봇의 웨이퍼 로딩, 언로딩기구
IPC: B65G49/07
Filed: 1999-01-19
Abstract: 로딩로봇의 로딩카세트에 수납되어 있는 폴리싱 후의 웨이퍼에 먼지가 부착하지 않도록 한 웨이퍼 로딩, 언로딩기구를 제공한다. 
     매엽식편면 폴리싱머신을 구성하는 로딩로봇에 설치된 로딩카세트를 상하이동시키는 기구를 로딩카세트의 아래쪽에 배설하여, 구동전달시에 발생하는 먼지가 폴리싱 후의 웨이퍼에 부착하지 않도록 하였다.
Patent KR-19990068216-A (KR)
Title: 통신시스템
IPC: H04W28/06
Filed: 1999-01-29
Abstract: ATM망 등의 소정의 유선송신경로에 의해 송신된 데이터가 무선송신될 때, 사용자정보로서의 패이로드가 효율적으로 송신될 수 있다.    유선송신경로에 의해 헤더정보에 부가된 에러검출신호가 제거되거나, 헤더정보의 반복이 생략되므로, 정보는 송신되는 무선송신경로에 대하여 포맷된다.
Patent KR-20000061828-A (KR)
Inventor: LEE DAE U
IPC: F24F7/013
Filed: 1999-03-31
Abstract: PURPOSE: A closed type direct exhaust range hood is provided to achieve an aesthetic enhancement when not used, and effectively prevent a contaminated air from being diffused during food cook by forming an air curtain. CONSTITUTION: A range hood comprises axial fans(20A,20B) supported by a wall(10), a lid(30) arranged at a front surface of the axial fans in such a manner that an upper end of the lid is hinged to the wall so as to open/close an air suction port side of the fan, a cover(40) having an air outlet(40A) and an air inlet(40B) and which is arranged at a rear surface of the axial fans in such a manner as to be fixed onto the wall, a plurality of blades(60) hinge-coupled to an inner side wall of the cover in such a manner as to be connected to the lid through a wire(50) and interlinked to the lid, and a gas spring(70) having an end thereof hinge-coupled to the lid and the other end hinge-fixed to the wall so as to make the lid to keep opening/closing operation.
Patent KR-20000066226-A (KR)
Inventor: PARK PYUNG SIK
IPC: A01B19/06
Filed: 1999-04-14
Abstract: PURPOSE: An agricultural harrow which can prevent a breakdown of the harrow by infiltration of water and foreign materials and which can provide buffering action against the lateral impact of supplementary blades extended from both sides of harrow body is provided. CONSTITUTION: An agricultural harrow comprises: a) a harrow body(1) installed at the rear of tractor; b) supplementary blades(2,2a) which slide to extend from or retract into both sides of the harrow body(1); c) a driving motor(3) positioned vertically to the top of the harrow body(1) and generating power by an electrical source; d) a power transmitting member in which a pinion(41) is positioned on the rotation shaft of the driving motor(3) for driving the supplementary blades(2,2a) slidably by the power of the driving motor(3) and a pair of racks(42,43) opposing each other and connected to the supplementary blades(2,2a) at both sides of the pinion are engaged; and e) a housing for protecting the exterior parts of the pinion and racks(42,43) of the power transmitting member.
Patent KR-19990046776-A (KR)
Filed: 1999-04-23
Abstract: 본발명은 모든 도로에 위치, 방향, 거리를 표시한 대형 안내 표지판을 볼 수 있지만 시각적인 전달에 한정되어 운전자가 놓쳐버리거나 보지 못하는 불편함이 많았다. 그래서 현재의 교통안내 표지판으로서는 할 수 없는 다양한 교통정보를 운전자에게 음성으로 전달하는것을 목적으로하는 무선 방송시스템에 관한 것이다. 
     본 발명은 음성교통안내 정보를 저장하고 있으면서 안내표지판 근처에 설치할수 있는 송신기와 음성 교통정보를 알기를희망하는 차량 내부에 설치되어 있는 수신기로 되어있으며 음성정보는 차량의 스피커를 통하여 운전자에게 전달되거나 모니트, L C D 등의 화면을 통하여 문자로 전달되어 운행하고자하는 방향으로의 지형,거리,방향 등의 정보를 얻으므로 기존의 원거리 시각에 의한 교통 안내 형태를 청각에 의한 근거리 방송안내를 받으므로 교통정보의 체감도를 완벽히 느끼게 하는  획기적인 교통 안내방송 시스템이다.
Patent KR-20000022619-A (KR)
Inventor: SASAKI GEIJI
IPC: A47C27/00
Filed: 1999-04-26
Abstract: PURPOSE: A bedding having an acoustic mechanism is provided which is able to provide a musical effect and an appropriate amount of vibration to improve the relaxation effect. CONSTITUTION: In an underlay-type bedding comprising an insulation(1) and a cover materials covering the insulation(1), it further comprises two speakers(2), which are placed at both right and left of the head region while asleep, and two oscillators(5), which are placed at both right and left of the foot region and give an appropriate vibration to the foot region.
Patent KR-20000073096-A (KR)
Inventor: BANG JI HUN
IPC: A61B7/00
Filed: 1999-05-06
Abstract: PURPOSE: A clutter signal filtering apparatus is provided to remove a clutter signal by applying an appropriate clutter filtering algorithm corresponding to each pixel. CONSTITUTION: A clutter signal filtering apparatus comprises a buffer(63) which stores I/Q data inputted with a pixel unit. A clutter information extracting section(61) calculates power, variance and velocity in response to the I/Q data. A look up table(62) sends table information for a coefficient conversion, a filter conversion and an initial value conversion of a clutter filter into a clutter filter section(64). The clutter filter section(64) receives the table information for the coefficient conversion to convert a coefficient of a current filter. The clutter filter section(64) receives the table information for the filter conversion to convert a current filter into a different filter. The clutter filter section(64) receives the table information for the initial value conversion to convert an initial value method of a current filter. After conversion, a clutter of the I/Q data is removed by the clutter filter section(64). A spectral estimator(65) estimates spectrum of a clutter-removed ultrasonic wave signal to display the estimated spectrum through a display section(66).
Patent KR-19990088139-A (KR)
Title: 그린시트성형용이형필름
Filed: 1999-05-08
Abstract: 이형층 표면이 평탄한 이형 필름을 로울 상으로 권취하여도 블로킹 등이 발생하지 않고 박막 그린 시트 성형용에 대응 가능한 이형 필름을 제공한다. 
     폴리에스테르 필름의 한 면에 이형층이 도포되어 있는 이형 필름에 있어서, 이형층 표면의 중심선 평균 조도(Ra)가 30 nm 이하이고, 이형층 표면의 돌기 높이(X)와 돌기수(Y)의 관계를 나타내는 분포곡선이 돌기 높이 0.05∼0.3 ㎛의 범위로 하기 식(1)을 만족하고 또 이형층 표면의 돌기 높이 0.4 ㎛ 이상의 돌기수가 35 개/mm 2 이하인 것을 특징으로 하는 박막 그린 시트 성형용 이형 필름: 
     1ogY ≥ -5X            (1) 
     상기 식에서, 
     X는 이형층 표면의 돌기 높이(㎛)이고, 
     Y는 이형층 표면의 돌기수(개/mm 2 )임.
Patent KR-20000075267-A (KR)
Inventor: LEE JONG HO
IPC: H04N7/14
Filed: 1999-05-31
Abstract: PURPOSE: A method and apparatus for displaying an e-mail is provided to inform an arrival of an e-mail to a user when the e-mail is arrived and display a title and a content of the e-mail at a desired portion of a screen when the user selects a menu of displaying the e-mail. CONSTITUTION: A method for displaying an e-mail comprises the steps of: selecting a menu of displaying the e-mail when arriving the e-mail, displaying a menu image and a title of the arrived e-mail, and displaying the e-mail according to the menu selected by a user. In the step of displaying the menu image and the title, the menu image comprises an image menu for displaying a content of the e-mail on the entire screen and a subtitle menu for displaying the content of the e-mail in a subtitle style. An apparatus for displaying an e-mail comprises a displaying portion for displaying the title and content of the input e-mail, a menu image selecting portion for selecting whether displaying the e-mail on the entire screen or in a subtitle style, and a controlling portion displaying the title of the e-mail and then the menu image when arriving the e-mail and displaying the e-mail on the entire screen or in the subtitle style according to a selection by the user.
Patent KR-20000005846-A (KR)
Inventor: OSITA MIZO
IPC: G07F5/24
Filed: 1999-06-02
Abstract: PURPOSE: A change money preparing apparatus is provided to adopt in cast that different change money according date is to be prepared. CONSTITUTION: The present invention discloses a change money preparing apparatus comprising: a contractor registration unit(244) for register the contractor; a store registration unit(245) for register the store of the contractor; a register registration unit(246) for the register of the store; and a data input unit(36) in which change money data are registered in one unit of store unit and register unit and said change money data are registered in one day. Said data input unit can register the corresponding relation to the preparing date of said change money pack on base of the delivery date for delivering the change money pack.
Patent KR-20010009178-A (KR)
Inventor: IM PIL KWON
IPC: A47J36/02
Filed: 1999-07-08
Abstract: PURPOSE: A cook-pot which prevents a ceramic board put onto the bottom from being destructed, is heat-efficient, and keeps the broth from being overflown when the food boils. CONSTITUTION: The cook-pot is characterized by being comprised of: a circle-shaped protruded part(26) formed at the center of the bottom; and a circle-shaped ceramic board with an opened part for connecting to the protruded part(26), formed onto the circle-shaped protruded part(26).
Patent KR-20010010306-A (KR)
Inventor: KIM SANG SIK
IPC: H01L27/148
Filed: 1999-07-19
Abstract: PURPOSE: A charge coupled device having a micro-lens is to provide a pad for solving a problem of coating defect of photoresist and simplify the process of opening a pad area. CONSTITUTION: A charge transfer area is formed at a light shielding portion and an optical diode which are formed at a light receiving portion of a semiconductor substrate(50). A charge transfer electrode(52) is formed on the charge transfer area. A light shielding film(54) is formed at an array area except the light receiving portion. A pad(58) is formed at a pad area to transmit an electric signal to an inside and outside. The first planarized layer(60) is formed on the light shielding film to cover the entire array area. The second planarized layer(62) is formed on the first planarized layer and formed of other material having a spectrum sensitivity different from that of the first planarized layer. And a micro-lens(66) is formed at a light receiving portion on the second planarized layer. In the device, the first planarized layer and the micro-lens are formed of positive type photoresist.
Patent KR-20000052302-A (KR)
Inventor: RUJORIGEORJEO
IPC: H01R13/629
Filed: 1999-07-26
Abstract: PURPOSE: An electric connector having a handle is provided to rotate the connector for less than 360 degree when the connector is connected between a plug and a socket CONSTITUTION: An electric connector having a handle includes a plug(22) and a socket(30). The plug(22) includes at least one contact member. The socket(30) includes a contact corresponding to the at least one contact member as well as one slant member. The plug and the socket includes a coupling ring(42) and one and two termination member. The coupling ring(42) includes one handle extended therefrom as well as one pin. The two termination members are implemented on one of the coupling ring and the socket, respectively. The plug and the socket can be separated and combined. The connector includes one alignment pin as well as an arrangement pin coupled to the socket. And the pins are aligned in a circular form when the socket and the plug are combined.
Patent KR-20010016832-A (KR)
Inventor: CHOI TAE EUN
IPC: H04M1/26
Filed: 1999-08-04
Abstract: PURPOSE: A telephone number input method is provided to inform a user of originating candidate phone numbers, based on cumulated phone number information, by applying a fuzzy theory so that the user can use a phone number exactly for calling. CONSTITUTION: If a user selects a fuzzy call numbering displayed on a display unit after inputting a telephone number all(S1,S2), a control unit matches the input number with an outgoing call log, a telephone directory and an incoming call log and extracts a candidate list(S3). The control unit makes a final candidate list by arraying the telephone numbers of the candidate list in the order of a small quantity of wrong numbers and arraying the arrayed wrong numbers in the order of the highest consistent probability on a fuzzy matrix(S4-S6). The control unit confirms whether a telephone number of the final candidate list is selected(S7). If not a telephone number of the final candidate list but the input number is selected, the control unit sends the input phone number(S10). In case that a telephone number of the final candidate list is selected, the control unit sends the selected phone number(S8). The control unit records the error probability value of a number, which belongs to the input phone number, on the fuzzy matrix and updates the fuzzy matrix(S9).
Patent KR-19990078789-A (KR)
Title: 플라즈마 에칭을 이용한 의료용 초음파 탐촉자
Filed: 1999-08-07
Abstract: 본 발명은 의료용 초음파 진단기기에 사용되는 초음파 탐촉자(Ultrasonic- probe)의 개량에 관한 것으로, 진동자(압전 세라믹)의 표면에 플라즈마 에칭 (Plasma Etching)으로 표면 처리하여 접합력을 크게 향상시킴으로써 기존의 일반 몰딩(Molding)방식이나 단순 접착방식에 의한 제품에 비하여 각 부분간의 결합력이 크게 향상되어 제품의 특성 및 내구성 측면에서 우수한 성능을 얻을 수 있도록 한 것이다. 
     즉, 적정 진공도와 압력을 가지는 챔버 내에 초음파 진동자(압전 세라믹)를 넣고, 미리 정해놓은 시간 동안 아르곤(Ar) 가스와 고주파 전원(RF Power)을 이용하여 플라즈마 방전시키면 초음파 진동자의 표면이 플라즈마 방전에 의한 에칭 처리로 접착력을 크게 향상시키도록 함으로써 제품의 성능에는 영향을 미치지 않으면서 감도와 접합력이 우수하고 내구성이 뛰어난 제품을 얻을 수 있도록 한 것이다.
Patent KR-20010018110-A (KR)
Inventor: JIN GYEONG SIK
IPC: H04L12/28
Filed: 1999-08-17
Abstract: PURPOSE: A lan data transmission apparatus is provided to transmit a telephone signal together with ethernet transmitting/receiving signals using a 4-wire telephone line. CONSTITUTION: A network module(20) combines or separates a telephone signal inputted or outputted through a PSTN with or from a lan data signal transmitted or received through a switching hub(10). A subscriber module(30), separating the combined signal transmitted from the network module(20) into the lan data signal and the telephone signal, transfers the lan data signal to a subscriber equipment and the telephone signal to a telephone set. The first line(40), 2 wires of a 4-wire telephone line, transmits and receives the telephone signal combined with a transmitting signal of the network module side. The second line(50), the other 2 wires of the 4-wire telephone line, transmits a transmitting signal of the subscriber module side. The first low pass filter(320) passes a low frequency component transmitted and received through the first line(40) to combine and separate the telephone signal. The first high pass filter(310) passes a radio frequency component received through the first line(40) to separate the lan data signal. The second low pass filter(220) passes the low frequency component transmitted and received through the first line(40) to combine and separate the telephone signal. A level amplification part(240) amplifies the level of the lan data signal outputted from the switching hub(10). The second high pass filter(210), passing the radio frequency component amplified at the level amplification part(240), combines and transmits the lan data signal to the first line(40).