baber/WOPTO huggingface dataset:
Patent KR-890002185-B1 (KR)
Title: Mode selection arrangement for use in a electric timer
Inventor: ARICHI ISAO
IPC: H01H43/04
Filed: 1984-03-30
Granted: 1989-06-22
Abstract: Within the space defined by four interlocking printed circuit boards (PCB) an electronic timer of known form is installed.  The printed circuit forming one end face of the internal enclosure, has a rotor, mounted on its front surface, carrying moving contacts engaging electrically with a ring pattern of resistive elements deposited at the centre of its front surface.  Spaced from this PCB is a gearbox which includes display gears working operationally and integrally with switch gears to which are attached sliding contacts which slide on further patterns on the PCB enabling changes of timer operation modes such as on-delay mode, off-delay mode and program mode.  Each display gear face carries indicia on its face, observable through windows in the front plate forming part of the gearbox enclosure.
Patent KR-890000353-B1 (KR)
Title: Freezing apparatus
Inventor: AOKI SHINGETADA
IPC: F25D31/00
Filed: 1984-05-03
Granted: 1989-03-14
Abstract: A contact freezer consists of a series of freezing plates (12) in which freezing medium is circulated in the interior.  The plates are movably connected at a predetermined interval in an elevational direction.  First elevation cylinders (14) raise the top freezing plate (12a) until the respective plates are suspended and lower them so that the adjacent plates make contact with freezing pans (17). Second elevation cylinders (16) raise or lower at least one specific freezing plate in the state that respective plates are suspended to dispose the bottom freezing plate (12m).  An engaging or disengaging mechanism (18,20) engages the specific plate with the second elevation cylinder.
Patent KR-900001961-B1 (KR)
Title: Devices of velocity control of elevator
Inventor: DANATASI ODORU
IPC: B66B1/30
Filed: 1985-04-03
Granted: 1990-03-27
Abstract: A speed control apparatus for an elevator has an inverter which supplies alternating current to an induction motor for driving a cage of the elevator.  The apparatus comprises; a current command calculating means which calculates using a speed command, a speed detection signal of the induction motor, a resistance value signal of a rotor of the induction motor, and an instantaneous current command of the induction motor; a pulse width modulation circuit which subjects the inverter to a pulse width modulation control by the use of the instantaneous current command and an output current detection signal of the inverter.
Patent KR-910007077-B1 (KR)
Title: Screen material for printing material and a manufacturing method
Inventor: BOB MEUZELAAR
IPC: C25D5/08
Filed: 1985-05-07
Granted: 1991-09-16
Abstract: A metal screen material comprising a metal screen, preferably a cylindrical screen, obtained by electrolytic deposition of a metal upon a screen skeleton and said screen material having a fineness of 250 to 1000 mesh. The screen opening is preferably defined by curved walls extending from the lower side of the screen opening to the upper side of the screen opening, the upper side of the screen opening having an area being larger than the lower side of the screen opening. The screen material is advantageously obtained by electrolytic deposition of a metal from an electrolytic bath upon a screen skeleton, the bath solution passing, at least during part of the electrolytic depositing time, through the openings in the screen skeleton connected as the cathode either in one direction or in the other reverse direction.
Patent KR-910004255-B1 (KR)
Title: Transport device for piece goods or the like
Inventor: LODIGE RUDOLF
IPC: B65G39/02
Filed: 1985-09-06
Granted: 1991-06-25
Abstract: Disclosed herein is a transport device for piece goods or the like, having rolling members (5) which directly support the piece goods. The rolling members (5) are arranged partly below a plate member which may be a unitary plate or segments (1) which supplement each other in plate-like manner. The rolling members (5) are supported on rolling drive devices and are guided in holes (3) in the plate member. The top portions of the rolling members (5) protrude above the top of the plate member and are arranged in linear rows (7) transverse to the direction of the transport. The transport device is a linear conveyor device which has simple drive devices, insensitive to heavy loads, on the rolling members (5) and, accordingly, can be driven over also by vehicles without the lowering of the rolling members (5). This result is achieved by providing the rolling drive devices in the form of cylindrical shafts (8) one of which is mounted centrally below each row (7) of rolling members (5) and parallel thereto.
Patent KR-930002943-B1 (KR)
Inventor: MARKOVITZ MARK
IPC: C08K5/55
Filed: 1985-10-04
Granted: 1993-04-15
Abstract: 내용 없음.
Patent KR-890004756-B1 (KR)
Title: Optical pickup using optical fiber
Inventor: SONG TAE-SON
IPC: G11B7/1384
Filed: 1985-12-10
Granted: 1989-11-25
Abstract: The pickup simlifies the optical mechanism of the compact disc or the optical filing system by using optical fibre. An optical fibre unit cable(6) has both a transmitting fibre(6A) and a receiving fibre(6B). The first branch(61) consists of the transmitting fibre sending laser light emitted from laser diode(1) to optical disc(4). The second branch(62) consists of the transmitting fibre(6A) sending laser light reflected from the disc(4) to the photodiodes. A collimator lens(2) ans a condensor lens(3) are used between a complex branch(63) and the optical disc(4) to produce parallel lights and condensing lights.
Patent KR-870000283-B1 (KR)
Title: Process for preparing alkenylsuccinic anhydrides
Inventor: FUJINO KIYOHARU
IPC: C07C51/567
Filed: 1985-12-19
Granted: 1987-02-25
Abstract: High quality alkenyl succinic anhydride was prepd. by heat treatment of C2-90 olefin or maleic acid in the presence of solid acid/base catalyst. Thus, 538g Dialene AD-16 and 1.7g catalyst (Si/Ti=1/1) was added to the 1liter-capacity reactor. 196g maleic acid was stirred under nitrogen gas and maintained in the reactor at 170≰C for 30 min. Addition reaction was carried out at 200≰C for 6h. The final product was obtained at 200≰C and 15 mmHg (viscosity at 25≰C=102cP).
Patent KR-890002918-B1 (KR)
Title: Crankshaft supporting and lubricating structure for multicylinder internal combustion engines
Inventor: ANNO NOBUO
IPC: F02F1/10
Filed: 1985-12-19
Granted: 1989-08-11
Abstract: In a lubrication system for an in-line or V-shaped multicylinder IC engine, a crankshaft (13) is journalled between bearing caps (8) and journal walls (7) of a cylinder block (3). The caps and a bridge (9) connecting them contain branch oil passages (33) for supplying the crankshaft bearings.  The passages are offset to one side of a cylinder axis (L) passing through the crankshaft centre.  A similarly offset main gallery (30) of the bridge communicates with the passages.  The gallery is communicated with a pressurised oil source by a supply passage (34,35) in (and at one side of) one bearing cap and the bridge.
Patent KR-900003294-B1 (KR)
Title: Process for the production of yarn reinforced synthetic resin hose
Inventor: KIM SOO
IPC: B29C63/24
Filed: 1985-12-23
Granted: 1990-05-14
Abstract: A process for producing a synthetic resin hose reinforced with a steel wire layer comprises (a) welding together by coating the layer on the outside surface of the inner duct extruded from the extruding outlet of the hollow cylinder, (b) passing then through the moving outer extruding duct, and (c) incorporating the inner duct, the steel wire layer with the outer duct by extruding the melted synthetic resin compsn. from the dice of the outer duct.
Patent KR-940010528-B1 (KR)
Inventor: FOSSATI GIORGIO
IPC: B66B1/04
Filed: 1986-11-17
Granted: 1994-10-24
Abstract: 내용 없음.
Patent KR-920005258-B1 (KR)
Inventor: OKUTSU MITSUHIKO
IPC: G05F3/30
Filed: 1987-02-16
Granted: 1992-06-29
Abstract: 내용 없음.
Patent KR-960003503-B1 (KR)
Inventor: GOKE LOUIS R
IPC: H04Q11/04
Filed: 1987-03-06
Granted: 1996-03-14
Abstract: 내용 없음.
Patent KR-930003538-B1 (KR)
Inventor: KIM YONG-TAE
IPC: B30B9/32
Filed: 1987-03-07
Granted: 1993-05-03
Abstract: 내용 없음.
Patent KR-920002008-B1 (KR)
Inventor: TAYLOR THOMAS A
IPC: C23C30/00
Filed: 1987-05-14
Granted: 1992-03-09
Abstract: 내용 없음.
Patent KR-900005083-B1 (KR)
Title: Method for producing light weight foam
Inventor: KOJIMA HIROSUKE
IPC: C04B38/02
Filed: 1987-08-05
Granted: 1990-07-19
Abstract: Light wt. foam is made by foaming the compsn. comprising mainly inorganic filler and vinyl chloride system resin, viscosity adjusting agent for the resin, and internal lubricant having compatibility with the resin is molecular and fusion dispersed using a kneader having a mulling capacity of 2.5 or over. The compression ratio at the pt. where shearing force generates is 106 dyne or over, the shearing force is 104 dyne/cm2 or more shearing stress, and 15000 cycles or more displacement actions. The resulting dispersed substance is mixed with the crosslinking agent of organic peroxide having 35 kcal/mol. or more activation energy for decompsn. and azo cpds. of 30 kcal/mol. or more. The light wt. foam used for building and heat insulating materials of LNG tanks.
Patent KR-950014994-B1 (KR)
Inventor: SAKAI MITSUNORI
IPC: G01L7/00
Filed: 1987-10-13
Granted: 1995-12-21
Abstract: 내용 없음.
Patent KR-950007623-B1 (KR)
Inventor: SAURWEIN ALBERT C
IPC: F15B3/00
Filed: 1987-10-21
Granted: 1995-07-13
Abstract: 내용 없음.
Patent KR-910004137-B1 (KR)
Inventor: AKIBA CHOJI
IPC: G01D3/06
Filed: 1988-05-04
Granted: 1991-06-22
Abstract: 내용 없음.
Patent KR-960006248-B1 (KR)
Inventor: YAMAKAWA AKIRA
IPC: C04B35/581
Filed: 1988-08-29
Granted: 1996-05-11
Abstract: 내용 없음.
Patent KR-0140887-B1 (KR)
Inventor: SAKANE KAZUO
IPC: C07D501/04
Filed: 1989-01-05
Granted: 1998-06-01
Abstract: 내용없음
Patent KR-930000960-B1 (KR)
Inventor: INOUE KATSUNARI
IPC: G11C7/00
Filed: 1989-03-03
Granted: 1993-02-11
Abstract: 내용 없음.
Patent KR-0135286-B1 (KR)
Inventor: ANDERSON MARK R
IPC: H04S7/00
Filed: 1989-05-02
Granted: 1998-04-27
Abstract: 스테레오 확대 회로 선택 스위치는 스테레오 확대를 위해 필요한 경우 우측 및 좌측 채널을 교차 결합하기 위한 전송 게이트(21)를 포함한다.
Patent KR-910007998-B1 (KR)
Title: Surface temperature control method and apparatus of forming frame for foam extruding machine
Inventor: KIM SHUN-BAE
IPC: B29C48/305
Filed: 1989-06-20
Granted: 1991-10-05
Abstract: In a foam extrusion apparatus air  supplying  pipes  (6)  are mounted on and under semicircle forming rolls (1,2,3,4,5). The air supplying pipes, opening a great number of fine holes (7)  on  the surfaces, are connected to a constant temperature room, and has  a flow rate control valve at its inlet.  The  temperature  adjusting system consists of temperature sensors on the  semicircle  forming rolls and a display and a microprocessor on the outside.
Patent KR-920005088-B1 (KR)
Inventor: DAKIGAWA KAZUNORI
IPC: B01J35/04
Filed: 1989-06-27
Granted: 1992-06-26
Abstract: 내용 없음.
Patent KR-0126286-B1 (KR)
Inventor: HARALD BREIVIK
IPC: A61K38/00
Filed: 1989-08-11
Granted: 1997-12-26
Abstract: 없음.
Patent KR-940000929-B1 (KR)
Title: Digital frequency shift keying modulating circuit
Inventor: PARK SANG-KYU
IPC: B01D53/26
Filed: 1989-09-22
Granted: 1994-02-04
Abstract: The circuit includes a zero cross detection circuit (11) for detecting the zero cross point and for driving the square wave signal, an edge detector (14) for generating the edge detection signal, a 1st stability circuit (12) for driving the pulse signal, a 3rd stability circuit (15) for driving the 2nd pulse signal, a 1st logic product gate (17) for outputting the edge detection signal, a 5th stability circuit (19) for driving the 3rd pulse signal, a 4th stability circuit(16) for driving the 5th pulse signal, a 2nd logic product gate (18) for outputting the edge detection signal form the edge detecter(14).
Patent KR-940002793-B1 (KR)
Title: Process for the preparation of cosmetic colors
Inventor: PARK SU-NAM
Filed: 1989-10-05
Granted: 1994-04-02
Abstract: The process for preparing anthocyanin pigment from plants comprises: (a) extracting flowers of garden balsam (Impatiens balsamina) which contain anthocyanin with EtOH; (b) adding cellulose powder to the extract; (c) stirring for 0.5-3 hrs., and (d) vacuum-evaporating it to give red pigment for cosmetics.
Patent KR-930006017-B1 (KR)
Inventor: LAW JOSEPH P
IPC: F16L33/22
Filed: 1989-12-19
Granted: 1993-07-01
Abstract: 내용 없음.
Patent KR-950000715-B1 (KR)
Title: Manufacturing method of super high multi-filament yarn for apparel use having non-circular cross section
Inventor: KIM SU-HYON
IPC: D01D5/088
Filed: 1989-12-26
Granted: 1995-01-28
Abstract: The spun yarn is cooled for passing through a cylindrical cooler which is installed at 30 cm distance from a nozzle and has outer jacket in which a coolant at 3-4 deg.C is helically circulated. The length of the cooler and the distance btwn the yarn and the cooler are controlled that temp. of yarn at 1 m distance from the nozzle becomes 20 deg.C. The spun yarn has homogeneous property because of quencheing without contacting with cool air.
Patent KR-930001741-B1 (KR)
Title: Semiconductor memory device having spare array
Inventor: BYON HYON-KUN
IPC: G11C11/34
Filed: 1989-12-29
Granted: 1993-03-12
Abstract: The memory device having a  function  for  substituting  good redundant cells for poor  cells  comprises  a  normal  cell  array (100), a spare cell array (200) for substituting  good  cells  for poor cells when the normal memory cells have defects, and a  block selection unit (70) connected to the normal cell array  (100)  and spare cell array (200) to input block selection  information.  The spare cell array is drived independently of the normal cell  array according to the output signal of the block selection  unit  (70). The spare cell array includes cells,  a  spare  precharge  circuit (11) connected to spare column line to precharge the spare  column line, a spare dummy cell (21), a spare sense amplifier (31) and  a spare write driver.
Patent KR-930005226-B1 (KR)
Inventor: GERSON IRA A
IPC: G10L15/02
Filed: 1988-12-29
Granted: 1993-06-16
Abstract: 내용 없음.
Patent KR-930003495-B1 (KR)
Inventor: BORSTEL REID W VON
IPC: A61P43/00
Filed: 1988-10-27
Granted: 1993-05-01
Abstract: 내용 없음.
Patent KR-930000592-B1 (KR)
Inventor: HIROSHIMA IKUYOSHI
IPC: G06F11/34
Filed: 1990-01-19
Granted: 1993-01-25
Abstract: 내용 없음.
Patent KR-930008736-B1 (KR)
Title: Sheet or film of cyclo-olefin polymer
Inventor: YAMAMOTO YOJO
IPC: C08J5/18
Filed: 1990-02-20
Granted: 1993-09-13
Abstract: A sheet or a film is disclosed formed of at least one cyclo-olefin polymer selected from ring-opened polymers derived from at least one cyclo-olefin of formula (I) <CHEM> wherein n is 0 or a positive integer, and each of R<1> to R<1><2> independently represents hydrogen, a halogen or an aliphatic, aromatic or alicyclic hydrocarbon group; two of R<9> to R<1><2> form, together with the carbon atoms to which they are bonded, a monocyclic or polycyclic group which may contain a double bond; or R<9> and R<1><0>, or R<1><1> and R<1><2> form an alkylidene group together with the carbon atoms to which they are bonded; ring-opened copolymers derived from the cyclo-olefins of formula (I), hydrogenation products of said polymers or copolymers and addition polymers of the cyclo-olefins of formula (I) with ethylene, said cyclo-olefin polymer having an intrinsic viscosity [ eta ], measured in decalin at 135 DEG C, of 0.01 to 10 dl/g and a softening temperature of at least 70 DEG C. Sheets and films of the invention have good properties of elongation resistance, ease of tearing and chemical resistance as well as providing an effective gas barrier
Patent KR-930002977-B1 (KR)
Title: Vehicle-passing information detecting apparatus with using optical fiber sensor
Inventor: LEE HO-JUN
IPC: G01D3/00
Filed: 1990-03-21
Granted: 1993-04-16
Abstract: The device using optical fiber, detects  and  checks  various data on the number of passing cars, running speed, type and weight of a car without interrupting noise  rapidly  and  correctly.  The device comprises a detecting section (2) for sensing parameters of vehicle by compressing of steel  plate  (26)  buried  under  road; light source section (4) for projecting optical  power  controlled by APC circuit (12) to the section (2);  light  detecting  section (6) for receiving modulated signal transmitted from optical  fiber (24) for changing wheel weight to electric signal via  upper  face of the plate (26).
Patent KR-930002399-B1 (KR)
Inventor: KAWAKAMI CHIKAHISA
IPC: G11B5/265
Filed: 1990-03-30
Granted: 1993-03-30
Abstract: 내용 없음.
Patent KR-930001954-B1 (KR)
Inventor: OZAKI SEISHIRO
IPC: H01H71/52
Filed: 1990-04-26
Granted: 1993-03-20
Abstract: 내용 없음.
Patent KR-930000013-B1 (KR)
Title: Video signal processing circuit for p.c.
Inventor: KIM DONG-HO
IPC: G06F3/14
Filed: 1990-05-23
Granted: 1993-01-06
Abstract: The circuit converts the  R,G,B  signals  generated  by  each video adaptor to the analog ones according to the selection of the video mode so that the video signal for the  multi-synchronization monochrome monitor is mixed and provided. The circuit comprises  a video signal converter (30) converting the TTL R,G,B and intensity video signals to the analog one, a level  setter  (60)  converting the analog signal to  the  signal  of  a  preset  level,  a  video selection switch (20) switching the TTL video signal nd the analog signal to the converter  and  the  level  setter  respectively,  a mixing buffer (70) controlling the gain of the mixed signal of the analog signal  with  the  gain  control  signal,  and  a  contrast controller (50) controlling the output gains of the converter  and the buffer.
Patent KR-0157311-B1 (KR)
Inventor: JACKSON FRANCIS G
IPC: E04B2/82
Filed: 1990-06-08
Granted: 1998-11-16
Abstract: 내용 없음.
Patent KR-920009493-B1 (KR)
Title: Method for freeze-drying of microorganisms
Inventor: LEE HYON-SU
IPC: C12N1/04
Filed: 1990-07-24
Granted: 1992-10-17
Abstract: A   microorganism   is   pre-treated   by   (a)   culturing microorganism,  e.g.  Lactobacillus  acidophillus,   Streptococcus faecium  etc.,  (b)  concentrating  the  obtd.  culture  broth  by centrifuging or ultra-filtrating, and (c) pumping the concentrated culture broth into liquid nitrogen by using silicone tube  of  2-5 mm diameter and peristaltic pump. The process is useful for freeze drying microorganism.
Patent KR-0148576-B1 (KR)
Title: Fully synthetic fusion-bondable interlinking for shirts
Inventor: KUFNER GEORG
IPC: A41D27/02
Filed: 1990-08-03
Granted: 1998-12-01
Abstract: Woven sheet material for use as interlining in the shirts sector, consisting of sheet-forming warp and weft threads which consist of synthetic material, the weft yarn consisting at least in part of crimped yarns. The ready-woven fabric is then coated in dot fashion with a heat-sealable adhesive composition based on copolyesters and/or high density polyethylene in a dot pattern with a dot density of 600 - 1400 dots/inch<2>. The invention likewise encompasses coloured, marked and flameproofed interlinings. 
<??>The coating with heat-sealable adhesive compositions can be carried out in dot fashion using any known application technique. It is also contemplated to follow the coating operation with a calendering operation. 
<IMAGE>
Patent KR-0167764-B1 (KR)
Title: Process for the preparation of castanospermine esters
Inventor: MARGOLIN ALEXEY L
IPC: C12P17/18
Filed: 1990-08-07
Granted: 1999-01-15
Abstract: 1-Esters of castanospermine have been prepared enzymatically from appropriate activated esters using subtilisin. The esters obtained in this way can be further reacted enzymatically to give diesters which can, in turn, be selectively hydrolyzed to give monoesters in good yield.
Patent KR-940007894-B1 (KR)
Inventor: HUMMEL ALAN R
IPC: F16D65/02
Filed: 1990-10-08
Granted: 1994-08-27
Abstract: 내용 없음.
Patent KR-930002939-B1 (KR)
Inventor: HARTMANN HANS S
IPC: C03C4/16
Filed: 1990-10-19
Granted: 1993-04-15
Abstract: 내용 없음.
Patent KR-930012138-B1 (KR)
Title: Bar-code remote recognition method for process carriers of wafer disks
Inventor: MILBRETT LYNN
IPC: G06K19/02
Filed: 1989-02-17
Granted: 1993-12-24
Abstract: A remote recognition system for monitoring the progress of a plurality of batches of semiconductor wafers or memory disks through a series of processing operations based on bar code recognition technology. Each batch is placed in a carrier in which it is transported to various locations where processing operations are performed. Each carrier is provided with an optically visible bar code tag, coded to be responsive to within reading range of a bar code reader unit which transmits a modulated light beam signal to the coded bar code tag and reads and decodes the light beam reflected back and collected by an optical receiver to uniquely identify the carrier that is positioned within range of the reader unit. Information from the reader units to permit monitoring the progress of semiconductor wafer or memory disk batches through multiple processing operations is received by further control apparatus. The novel bar coded carrier for use with this remote recognition system uses a bar code tag encapsulated in an external wall of the carrier, so that the bar code tag is protected from harsh chemical environments encountered by the process carrier while it remains readable by the various bar code reader units.
Patent KR-930006770-B1 (KR)
Title: Non-steroid anti-drug
Inventor: JONG HAE-SU
IPC: C07D231/12
Filed: 1991-01-21
Granted: 1993-07-23
Abstract: Lonazolac acetic acid  esters  are  prepd.  by  (a)  reacting 3-(4- chlorophenyl)-1-phenyl-1H-pyrazole-4-acetic     acid     with benzyl- 2-haloacetate in an organic solvent in the presence  of  an alkali catalyst  to  obtain  benzyl  lonazolac  acetate;  and  (b) reducing the obtd. cpd. with Pd/C catalyst in an organic  solvent. Pref.   the   benzyl-2-haloacetate   is    benzyl-2-chloroacetate, benzyl-2- bromoacetate or benzyl-2-iodoacetate; the organic solvent is dimethylformamide, acetone, methylethyl  ketone,  acetonitrile, pyridine, chloroform, THF or ethylacetate; the  catalyst  is  KOH, NaOH,  Na2CO3,  CaCO3,  triethylamine,   etc.   Lonazolac   is   a non-steroid antiinflammatory drug.
Patent KR-930009698-B1 (KR)
Title: Writing and recording method
Inventor: CHOE SUNG-RYOL
IPC: G11B25/10
Filed: 1991-01-31
Granted: 1993-10-08
Abstract: The apparatus records/reproduces  data  on/from  a  recording medium in which a plurality of recording medium on which  data  is recorded respectively are stored in a magazine means. One  of  the recording mediums is selected from the  magazine  means,  and  the selected medium is mounted on a deck  to  be  reproduced,  thereby enabling efficient use of recording mediums and reducing a  user's effort in search and selection of the recording mediums.
Patent KR-940002336-B1 (KR)
Title: Hygroscopic compound or desiccant
Inventor: HONG CHI-HUM
IPC: B01D53/28
Filed: 1991-02-21
Granted: 1994-03-23
Abstract: The hygroscopic agent having a good absoption property is composed of: 30-80 wt% calcium chloride; 5-40 wt% inorganic mineral of one or more selected from mica, zeolite, diatomaceous earth, talc, and quicklime; 2-25 wt% oxides; 0-10 wt% triethanolamine; 0-20 wt% natural organic material of one or more selected from methyl cellulose, carboxymethyl cellulose, pulp, and dehydrated plant powder; and 0-20 wt% hygroscopic polymer.
Patent KR-100217364-B1 (KR)
Inventor: ON JAE-KEUNG
IPC: H03K5/00
Filed: 1991-05-24
Granted: 1999-09-01
Abstract: 팩시밀리 시스템의 다이알 펄스 발생회로에 있어서, 입력되는 다이알 데이터에 따라 다이알 펄스 구동신호를 생성하는 펄스 구동 수단과, 상기 다이알 펄스 구동신호를 입력받아 라인 상으로 전송하는 포토커플링 수단인 포토모스 트랜지스터로 구성됨을 특징으로 한다.