baber/WOPTO huggingface dataset:
Patent KR-890000914-B1 (KR)
Title: Diffuser with through-the-wall bleeding
Inventor: DE PAUL MICHEL V
IPC: F04D29/68
Filed: 1982-01-08
Granted: 1989-04-13
Abstract: This invention is a trumpet-shaped diffuser with a partial outflow through a slot on a outer wall.  This diffuser basically includes an axial intake port and an outer wall surrounding the fluid flowing from the intake port to an axit in the diffuser.  An annular slot is provided on the outer wall to flow out some of the amount of the flowing.  The shape of the outer wall is formed to make negative the pressure gradient tested on the surface in the direction of flow at the upstream (2) of the slot.  The shape of the outer wall at the downstream is formed in order to flow the fluid in the direction from the intake port to the exit, and to make positive the pressure gradient tested on the surface of the direction of flow.
Patent KR-840000455-B1 (KR)
Title: Method for manufacturing mugwort
Inventor: GU JA-YON
IPC: A23L7/10
Filed: 1982-05-25
Granted: 1984-04-09
Abstract: Edible mugwort was processed by treating with rutin and zn-salt, preventing it from discoloration, and steaming. Thus, 150Kg mugwort was soaked into a mixt. contg. 100L 0.01%  rutin soln. and 100L 0.5% Zn-salt soln. for 3 min and was dried at 25oC for 2.5 hr to give completely dried mugwort, 500g of which was immersed into 500mL soln. contg. 0.3% NaCl, 0.3% (NH4)2CO3, 0.01% cinnamyl acetate, and a small amount of acetic acid (pH<=6.0) and was steamed at 100oC for 3 hr to give a processed edible mugwort.
Patent KR-900008248-B1 (KR)
Title: Process for preparing physiologically active substance fa-5859
Inventor: KANAMURA TSUNEO
IPC: C12P13/04
Filed: 1983-05-07
Granted: 1990-11-06
Abstract: Cpds. of formula (I) (where R1 is H or acetyl) and their salts are new. The N-acetyl cpd. of (I), designated FA-5859, is prepd. by cultivating appropriate strains of the genera Emericella or Aspergillus. It can be hydrolyzed conventionally to the primary amine. (I) inhibit degradation of fatty acids so are useful as antidiabetic agents and as reagents for studying fatty acid metabolism.
Patent KR-850000258-B1 (KR)
Title: Method for manufacturing organic fertilizer
Inventor: HWANG U-SOP
IPC: C05F5/00
Filed: 1983-05-27
Granted: 1985-03-14
Abstract: After mixing liquid raw materials into a ground compound of organic and inorganic materials, the cultured object of an anaerobic microorganism was inserted. A new type of organic fertilizen was produced by closed fermentation after agitation and granulization. Especially, by using rumen bacteria that live in the stomaches of animals that feed on plants and several anaerobic bacteria, their own strain protein formed with the organic and inorganic materials, fermented and disintegrated in the anaerobic conditon.
Patent KR-900007541-B1 (KR)
Title: Blood vessel projection imaging system using nuclear magnetic resonance
Inventor: MACOVSKI ALBERT
IPC: A61B5/055
Filed: 1984-02-16
Granted: 1990-10-15
Abstract: A two-dimensional projection image is created of the magnetic spins in a volume. Those magnetic spins due to static materials are cancelled. The magnetic spin signals due to moving materials remain forming a two-dimensional projection image of the blood vessels in the body. A planar excitation followed by a transverse gradient simplifies the collection of the projection of each plane. Saturation excitation and adiabatic fast passage reduces the critical nature of field uniformity. Excitation of a plane, and the reception of signals above and below the plane, distinguishes the direction of flow.
Patent KR-870000424-B1 (KR)
Title: Grinding machine for using with rollin mill
Inventor: OKI DOSHIO
IPC: B21B28/04
Filed: 1984-02-17
Granted: 1987-03-10
Abstract: Grinding machine for the rolls of a rolling mill consists of a main body which can be moved on two guide columns parallel to the rolls. A support plunger with a springloaded face can be moved towards the rolls to press a moving grinding band against the roll surface. Specifically, the body of a grinding machine can be moved by a chain drive along two guide columns parallel to the work rolls. A support plunger is joined through a crosspiece to two hydraulic cylinders to apply a pressure on the thrust mamber loaded by a spring. A grinding band is moved by a driven winding-up spool from an unwinding spool and is urged by the member against the roll surface. A load cell controls the grinding pressure.
Patent KR-950003199-B1 (KR)
Title: Method of transmitting informaiton encoding and decoding device
Inventor: IMMINK KORNELIS A S
IPC: H03M5/14
Filed: 1985-01-17
Granted: 1995-04-04
Abstract: A method of converting n-bit information words into m-bit code words, and the other way round, is described. The code words have a limited disparity. For every information word two code words are assigned to a group of information words, which code words can be derived from one another by inversion. A choice between these two code words is made to limit the digital sum value so as to obtain a d.c. free code. In order to obtain a further limitation of the digital sum value within the code words these code words are derived from each other by inversion and reversal.
Patent KR-870002108-B1 (KR)
Title: Unidirectional staple fiber
Inventor: GOTOH HAJIME
IPC: H05K1/03
Filed: 1985-03-20
Granted: 1987-12-08
Abstract: The prod. comprises staple fibres of which more than half are oriented within plus or minus 5 deg. of a predetermined direction, specifically across the width of the prod., which pref. is impregnated with matrix resin as a prepreg. for lamination with others in intersecting-fibres relation ship, or with a continuousoriented-filaments prepreg. in like relationship. Paperlike prod. mfg. method, comprises horizontally scattering liq. dispersion of staple fibres by centrifugal force, specifically by disc or by rotating horizontal jet nozzle, and collecting the fibres as a web on a vertically-moving surface.
Patent KR-910007271-B1 (KR)
Inventor: STICHT WALTER
IPC: B65G47/90
Filed: 1985-12-06
Granted: 1991-09-24
Abstract: 내용 없음.
Patent KR-880002589-B1 (KR)
Title: Pipe cutting system by laser cutter
Inventor: CHOE JU-HYON
IPC: B23K26/70
Filed: 1985-12-31
Granted: 1988-12-03
Abstract: The system is used to automatically cut pipes using laser beam. After input data such as the diameter, length and number of pipes are stored in the program, pipes are automatically supplied, fed, rotated, and cut according to the program.  The system comprises a working table (A), a cutting table (B), a controller (C), and a laser oscillator (D).  The working table consists of tilted guide boards (1), pipe supply cylinders (7,8), pipe support rest (2).  The cutting table at the end of the rest has a motor (4), a rotating-shaft pedestal (5), a hydraulic cylinder, a pipe feeder, etc..  The oscillator has a laser cutting head over the cutting table, and the head being operated by the controller and the oscillator cuts pipes.
Patent KR-900004003-B1 (KR)
Title: Antineo plastic substance and pharmaceutical composition thereof
Inventor: PETTIT GEORGE R
IPC: A61K/
Filed: 1985-10-17
Granted: 1990-06-07
Abstract: Pancratistatin and derivs. of formula (I) having antineoplastic activity are new. R-R3 = H, COMe or COX; X = acid radical. Pharmaceutical compsn. comprises (a) pancratistatin or derivs. of formula (I) as defined above; or (b) 7-deoxynaciclasine and derivs. of formula (II).
Patent KR-890002354-B1 (KR)
Title: Movable wheel
Inventor: LEE MYONG-KYU
IPC: F03B15/00
Filed: 1986-04-25
Granted: 1989-07-01
Abstract: A multi-purpose wheel (12) with variable vanes for use in a windmill or a tidal power plant comprises a fixed shaft (1), a hollow shaft (3) supported to the fixed shaft by bearings, a first rim (4) supported to the hollow shaft by spokes (5), a rim (6) with a tire (7) supported by extended spokes (5), and rotatable shafts (8) with fan-shaped vanes (11) mounted between the spokes. An annular ring (2) having guide grooves (14) is fitted to the fixed shaft wihtout contacting with the hollow shaft.  Guide rollers (10) rotatably mounted on links (9) connecting the rotatable shafts are provided in the guide grooves for use in adjusting the angle of vanes.
Patent KR-940006354-B1 (KR)
Title: Pcm audio signal recording and reproducing apparatus
Inventor: KAKUYAMA SHINJI
IPC: G11B20/10
Filed: 1986-06-12
Granted: 1994-07-18
Abstract: @ A PCM (pulse code modulated) audio signal recording and/or reproducing apparatus, operates with plural scanning periods, in which a rotary head (RD) scans obliquely a longitudinal direction of a tape (TP), and which are separated into a plurality of segment periods. A PCM audio signal is recorded on one channel of a plurality of track channels, formed by the alignment of respective segment tracks (34) which are scanned by the rotary head (RD) during the same segment period of each scanning period, and an identifying signal, indicative of the fact that the PCM audio signal is already recorded, is superimposed upon the PCM audio signal and recorded together on the track channel, whereby it becomes possible to easily identify whether or not the PCM audio signal is recorded on the plurality of track channels.
Patent KR-900005272-B1 (KR)
Title: Gas-blow casting nozzle
Inventor: OHWADA YASUNORI
IPC: B22D41/58
Filed: 1986-07-08
Granted: 1990-07-27
Abstract: Casting nozzle, particpating shroud or submerged nozzle (1), has a nozzle body (12), made of refractory with protective jacket (3) for a slag line, with outer wall (7) and inner wall (8) parts, forming a hollow chamber (4). The chamber is provided round the peripheral wall of a gas-permeable body (11) at the inner part of the nozzle body, and has a socket (5) connected to a gas-feeding duct. A joint part integrally joins the outer wall with the inner wall part, at the side of the gas permeable part and extends acorss the hollow space of the chamber radially. It transfers heat from the gas permeable part to the outer nozzle body. The total cylindrical area of the joint parts is about 30-70 % of the cylindrical area of the hollow chamber.
Patent KR-880002088-B1 (KR)
Title: Process for preparation of pyrrolodiazepines
Inventor: HONG SUNG-PYO
IPC: C07D487/04
Filed: 1986-08-25
Granted: 1988-10-15
Abstract: A method for prepg. pyrrolodiazepines having formula (I) comprises (i) hydrogenation of benzylaminoacetamide pyrrol derivs. in a lower alkanol i.e. MeOH, EtOH in the presence of catalyst i.e. Pt, Pd-C, Raney nickel at room temp. to produce amino derivs., (ii) reducing pressure to eliminate solvent and (iii) ring-closing with acid in the presence of catalyst i.e. sulfuric acid, HCl or p-toluene sulfonic acid.  R=H, C1-4 alkyl, R1=H, C1-2 alkyl or Ph, R2=Me, R3=H, C1-2 alkyl, halogen or OH.
Patent KR-960007648-B1 (KR)
Inventor: SIINA TUSAKA
IPC: B23K9/067
Filed: 1987-01-07
Granted: 1996-06-08
Abstract: 내용 없음.
Patent KR-910007264-B1 (KR)
Inventor: STOLL KURT
IPC: F16J15/00
Filed: 1987-01-16
Granted: 1991-09-24
Abstract: 내용 없음.
Patent KR-890000255-B1 (KR)
Title: The method of making accessories
Inventor: KIM JAE-HYON
IPC: A44C27/00
Filed: 1987-01-26
Granted: 1989-03-13
Abstract: This accessaries have three metals.  Solid wire-type metal having proper strength transfer continuously.  The molten metal of noble metal is filled in a mold.  Between the wire-type metal and the upper-side-opened tubular noble metal, low melting point metal is filled and passed through a cooling device and then wire-drawn through dies and winded by a winding machine.  The manufacturing procedure is continuous.
Patent KR-900005052-B1 (KR)
Title: Flexible polyurethane foams based on difunctional polyols and mdi and manufacture
Inventor: SERRATELLI JOHN F
IPC: C08G18/76
Filed: 1987-08-27
Granted: 1990-07-19
Abstract: Flexible polyurethane foam is prepd. in the one-shot reaction from a reaction mixt. comprising diphenylmethane diisocyanate or its deriv. having an average functionality of 2.0-3.0, a relatively high equiv. wt. (pref. 500-2500) polyol or its mixt. having an average functionality of 1.7-2.1, and a flowing agent. This permits the use of MDI in the prodn. of one-shot polyurethane foam. In preparing moulded foams, it permits the ready mfr. of very complex parts such as automobile crash pads and dashboards. In slabstock foams, it permits the use of cheaper, lower equiv. wt. polyols to prepare a foam having equiv. properties to TDI-based foam.
Patent KR-900001322-B1 (KR)
Title: Counteractive - ejecting apparatus for gases
Inventor: HAM JANG-HWAN
IPC: B05B7/04
Filed: 1987-09-02
Granted: 1990-03-08
Abstract: The sprinkler, which is used for sprinkling lime and water in order to neutralize the effect of chloride and ammonium gas when a leakage accident occurs, comprises a turbo fan (2) installed on the rotary shaft of an engine (1), a casing (3) having a suction tube (3') and a discharge tube (3"), a cross tube (4) having a tube (5) for supplying lime, flow tubes (8,9) connected to a tube (7) for sprinkling lime and water, a tube (6) for supplying water and a lime tank connected to the cross tube (4) by the tube (5).
Patent KR-900006966-B1 (KR)
Title: Arrangements for detecting in-band signalling in dm and tdm system
Inventor: CHANG SEOK-JOO
IPC: H04L7/00
Filed: 1987-09-25
Granted: 1990-09-25
Abstract: A circuit for detecting in-band signal in delta modulationtime division multiplexing system includes: a first buffer (10) for buffering in-band signal and voice data; a first selecter (40) for providing control signal to the first buffer; first and second memories (20,30) for alternately recording/reproducing in-band signal data and voice data into/from allocated memory area corresponding to each channel; a second buffer (50); a shift register (80) for converting serial in-band data and voice data into shifted parallel data; second and third sellecters (60,70); a time logic section (90); and DM clock generator (100)  for providing shift clock to the shift register and providing write control signal to the second and third sellecters.
Patent KR-910001097-B1 (KR)
Title: Bi-cmos inverter circuit
Inventor: SHIN KI-HO
IPC: H02M1/32
Filed: 1987-12-29
Granted: 1991-02-23
Abstract: The inverter circuit for improving a transfer  charactristics responding to an output of the bipolar  transistor  and  having  a constant output voltage of the inverter comprises  first  P.N  MOS (P3) (N5) reverse-driving each other in accordance with the  level state of the input stage; second P.N MOS (P4)  (N6),  their  gates being connected to  the  gates  of  the  first  P.N  MOS;  bipolar transistors  (Q5)(Q6)  the  base  of  the  transistor  (Q5)  being connected to the drain of the first P  MOS  (P3);  and  an  output stage (out) connected to the drains of the second P.N MOS (P4)(N6) and a node between the emiter of the bipolar transistor  (Q5)  and the collector of the bipolar transistor (Q6) commonly.
Patent KR-900008126-B1 (KR)
Title: Process for the preparation of halogened phenolaldehyde condensation compound
Inventor: CHO NAM-SUN
IPC: C07C39/367
Filed: 1987-12-30
Granted: 1990-10-31
Abstract: Process for preparation of halogenated phenol-aldehyde condensation cpd. derivs. of formula (I) comprises an addition reaction and dehydration condsn. reaction of hlogenated phenol and aldehyde using sulfuric acid as a catalyst in a halogenated methane solvent, neutralization of the mixt., and filtration of it. In (I), R is H, methyl, ethyl, (iso)propyl or butyl; X1 is F, Cl, Br or I. (I) are useful as insecticides.
Patent KR-920001721-B1 (KR)
Inventor: JIN SUNG-HO
IPC: H01R4/04
Filed: 1988-07-27
Granted: 1992-02-24
Abstract: 내용 없음.
Patent KR-930007556-B1 (KR)
Title: Upper and lower side marking method of printing system
Inventor: SONG DONG-YOL
IPC: G06K15/00
Filed: 1988-09-27
Granted: 1993-08-12
Abstract: This invention relates to the printing system  of  electronic typewriters or computer printers,  specially  to  a  up  and  down printing of the printing. The method employs carriage  motor  (6), print wheel motor (7), ribbon motor (B), paper moving  motor  (9), Hammer solenoid (10), under control of a motor  drive  (5),  after microprocessor's detecting the state of keyboard or interface (1), input and output section (3), memory (4).
Patent KR-910002954-B1 (KR)
Title: Process for coating a cylinder head with molten ceramic
Inventor: LEE CHANG-YUN
IPC: C23C4/04
Filed: 1989-03-15
Granted: 1991-05-11
Abstract: The cylinder head is coated by etching  the  upper  side  and upper surface of cylinder head with the solution containing  10-15 wt.% HCl as a etching solution and HNO3, CH3COOH and  H3PO4  as  a additive at the temp. of 70-80 deg.C, plasma-cating with  90  wt.% Ni-Cr compsn. consisting of 85-90 wt.% Ni and 15-10  wt.%  Cr,  10 wt.% Al to make 0.2-0.3mm under-coating layer, and  plasma-coating with ZrO2 base ceramic containing 5 wt.%  CaO  to  make  0.5-0.3mm layer. The method enables us  to  increase  the  bonding  strength between the cylinder head surface and ceramic layer, to produce in large quantities.
Patent KR-0138765-B1 (KR)
Inventor: KO YOUNG-SAN
IPC: G11B19/12
Filed: 1989-08-30
Granted: 1998-06-01
Abstract: 내용 없음
Patent KR-930001568-B1 (KR)
Inventor: FUJIDA MASANORI
IPC: H01L41/18
Filed: 1989-08-31
Granted: 1993-03-04
Abstract: 내용 없음.
Patent KR-920006774-B1 (KR)
Inventor: MURAYAMA KISHI
IPC: H04N1/32
Filed: 1989-09-07
Granted: 1992-08-17
Abstract: 내용 없음.
Patent KR-930000426-B1 (KR)
Inventor: KOSHIBA NOBUHARU
IPC: H01M10/0569
Filed: 1989-10-20
Granted: 1993-01-21
Abstract: 내용 없음.
Patent KR-920003204-B1 (KR)
Inventor: TAKAHASHI TATSUNORI
IPC: H01H71/52
Filed: 1989-11-18
Granted: 1992-04-24
Abstract: 내용 없음.
Patent KR-970005907-B1 (KR)
Inventor: IZAWA TOSHIO
IPC: C07D213/60
Filed: 1989-12-26
Granted: 1997-04-22
Abstract: 내용 없음.
Patent KR-930008447-B1 (KR)
Title: Method of purifying protein
Inventor: NAVEN DAVID
IPC: C07K14/81
Filed: 1988-10-19
Granted: 1993-09-04
Abstract: An ion-exchange chromatography technique for purifying crude proteins containing closely related impurities, wherein the isoelectric points of the desired protein and the impurities are determined, is disclosed. The application of the technique to the purification of GM-CSF using a cation exchange resin is also disclosed.
Patent KR-930007342-B1 (KR)
Inventor: COOPER LENAD M
IPC: B65D5/04
Filed: 1989-04-06
Granted: 1993-08-09
Abstract: 내용 없음.
Patent KR-930000985-B1 (KR)
Title: Method for making light-receiving element having optical fiber
Inventor: PARK KYONG-HYON
IPC: G02B6/24
Filed: 1990-04-26
Granted: 1993-02-12
Abstract: A manufacturing process of a light accepting  element  module attached with optical fiber comprises (a) forming a V-type  groove (12) for fixing optical  fibers  and  a  V-type  groove  (13)  for reflecting signal light on the same axis  of  sustrate  (11),  (b) forming a metal pad (14) for bonding light  accepting  element  to the end of (13) and a metal pad (15) for  bonding  optical  fibers onto (12) by  metal  deposition,  (c)  attaching  to  (11)  etched optical fibers (16) of which only cores remain at the end, and (d) attaching light accepting element (17) to (11), which is diced  to the same size as to (14), so that light accepting region  (18)  is directed downward to optical fiber cores.
Patent KR-930005908-B1 (KR)
Title: Automatic time adjustment circuit
Inventor: LEE KYU-AN
IPC: G04R20/14
Filed: 1990-05-22
Granted: 1993-06-25
Abstract: A microcomputer (2) normally drives the digital  display  (8) of a time generator (3) and produces a control signal to reset the time of the digital clock to the correct time at a certain hour of the day. A buffer amplifier (5) brings the signals  from  a  radio receiver to a suitable level when it is powered for operating  the time generator (3). A reference signal generator (4)  continuously generates reference signals at the same frequency  as  the  hourly time signals of a radio or  TV  station  when  it  is  powered  to operated the time generator. A comparator (6) delivers signals  at a high level when the amplified radio and reference  signals  have the same frequency. A time resetting  unit  (7)  uses  these  high level signals to deliver a resetting signal to  the  microcomputer (2) for correcting the displayed time.
Patent KR-0144352-B1 (KR)
Inventor: NOJUE YUTAKA
IPC: H02K1/27
Filed: 1990-06-30
Granted: 1998-10-01
Abstract: 내용없음
Patent KR-0152439-B1 (KR)
Inventor: REICHNER PHILIP
IPC: H01M8/06
Filed: 1990-09-24
Granted: 1998-10-15
Abstract: 전지셀 장치(10)는 축방향으로 길게 연장되는 전지셀(16)을 포함하고 있는 발전기 챔버(22)와, 신선한 기체상의 공급 연료 유입구(28)와, 기체상의 공급산화체 유입구(30)와, 혼합장치(50)에서 신선한 공급연료 유입구(28)와 연결되도록 발전기 챔버로부터 관통되는 소비된 연료 배출통로(46)와, 발전기 챔버(22)의 길이를 통하여 통과 형성된 혼합장치(50)와 연결되는 변환가능한 연료 혼합물 흐름 통로(52)를 구비하고 상기 연료 혼합물 흐름 통로에는 발전기 챔버(22)내로 통하는 진입구(54)를 포함하며, 상기 진입구의 축선이 연료 전극표면(18)과 횡단하는 방향을 이루고, 촉매변환 물질이 상기 변환가능한 연료 혼합물 진입구(54)의 부근에 분배되도록 하여 구성된다.
Patent KR-920009089-B1 (KR)
Title: Gas boiler control
Inventor: LEE HWANG-UI
IPC: F24H9/20
Filed: 1990-10-11
Granted: 1992-10-13
Abstract: The gas boiler including a controller (10), a burner (20),  a water tank  (30)  and  het  exchanger  (40)  is   controlled   by microprocessor (10'). If the selective switch on the summer/winter mode were switched to the summer mode in the  state  of  inputting the power source voltage to the gas boiler, the water  feeding  of the three-way  valve  maintains  until  the  selective  switch  is converted to the wintermode. If the selective switch were switched to the winter  mode,  the  heating  delay  time  is  prevented  by converting  the  water  feeding  state  into  the  heating  system direction. This method is useful for enhancing the reliability  of boiler.
Patent KR-0181491-B1 (KR)
Inventor: TZIKAS ATHANASSIOS
IPC: D06P3/66
Filed: 1990-10-30
Granted: 1999-04-01
Abstract: 셀룰로오즈 섬유에서 우수한 견뢰특성을 지니며 진황색 내지 등색 염색물 및 날염물을 제공하는 일반식(1)의 신규한 반응성 염료. 
     
       
     
     상기식에서, (R) 0-3 은 서로 독립적으로 할로겐, 니트로, 시아노, 트리플루오로메틸, 설파모일, 카바모일, C 1-4 알킬, C 1-4 알콕시, 아미노, 아세틸아미노, 우레이도, 하이드록실, 카복실, 설포메틸 및 설포로 이루어진 그룹으로 부터의 0 내지 3개의 치환기 R이며, R 1 은 수소, C 1-8 알킬 또는 C 5-7 사이클로알킬이고, R 2 은 C 1-8 알킬 또는 C 5-7 사이클로알킬이고, 알킬 및 사이클로알킬 라디칼R 1 및 R 2 는 서로 독립적으로 하이드록실, C 1-4 알콕시, 하이드록시-C 1-4 알콕시, HO-(CH 2 CH 2 -O) 2-4 -설페이토-C 1-4 알콕시, C 2-4 알카노일, C 1-4 알콕시카보닐, C 2-4 알카노일옥시, 카복실, 시아노, 할로겐, C 1-4 알킬아미노, 또는 N,N-디 -C 1-4 알킬아미노, 또는 설페이토에 의해 치환될 수 있거나, R 1 은 C 1-8 알킬 또는 C 5-7 사이클로알킬이고, 알킬 또는 사이클로알킬 라디칼은 상기 정의한 바와 같이 치환될 수 있고, R 2 은 설포에 의해 치환된 C 1-8 알킬 또는 C 5-7 사이클로알킬라디칼이다.
Patent KR-930003478-B1 (KR)
Title: Interface circuit and method for fax
Inventor: HWANG JAE-SHIK
IPC: H04N1/00
Filed: 1990-12-21
Granted: 1993-04-29
Abstract: The circuit enables built-in facsimile to be dialed using  10 numeric keys of a control panel when  power  is  on  and  off.  It includes relays  (12,14)  for  switching  a  telephone  line   to facsimile or telephone, a modem (18) for converting Tx/Rx signals, a ringer circuit (22) for generating audible ring signal, a dialer circuit (26) for selecting one of the dial pulse and MF signal,  a remote control transformer (32) for transmitting the  DTMF  signal to the modem  (18),  and  a  central  processing  unit  (34)  for controlling the facsimile.
Patent KR-100196487-B1 (KR)
Inventor: PROEBSTING ROBERT S
IPC: G11C11/419
Filed: 1991-04-02
Granted: 1999-06-15
Abstract: 본 발명은 분리형 PMOS 트랜지스터를 통해 감지 증폭기의 차동 입력 단자에 접속된 한쌍의 입력 노드를 지니는 감지 증폭기를 제공한다. 또한, 상기 입력 노드 각각은 면밀하게 정합된 한쌍의 트랜지스터의 게이트에 그리고 정합된 나머지 한쌍의 트랜지스터의 드레인에 접속된다. 부가적으로 상기 입력 노드 각각은 2개의 구동 NMOS 트랜지스터중 한 트랜지스터의 게이트에 접속된다. 상기 구동 NMOS 트랜지스터의 드레인은 상기 감지 증폭기의 출력 단자를 형성하는 2개의 출력 PMOS 트랜지스터의 게이트에 각기 접속된다. 상기 정합된 NMOS 트랜지스터쌍의 소오스는 NMOS 트랜지스터에 의해 접지에 연결되고 상기 구동 NMOS 트랜지스터의 소오스는 또다른 NMOS 트랜지스터에 의하여 접지에 연결된다. 상기 입력 단자에 인가된 차동 신호가 감지되고 지속되는 경우, 상기 정합된 트랜지스터쌍의 소오스 및 상기 구동 트랜지스터의 소오스는 순차적으로 접지에 접속된다. 따라서, 비록 상기 증폭기의 입력 노드가 고속 동작에서 접지로 끌어내릴지라도, 보다 높은 전압에 있는 입력 노드는 이것에 해당하는 구동 NMOS 트랜지스터를 여전히 턴온 시킬 수 있다. 상기 감지 증폭기의 지속 동작은 안전하게 속행된다.