baber/WOPTO huggingface dataset:
Patent KR-860000188-B1 (KR)
Title: Process for manufacturing printed circuits
Inventor: NAKAMURA TCHUNESHI
IPC: H05K3/36
Filed: 1982-05-13
Granted: 1986-02-28
Abstract: The substrate of a hybrid IC in this process comprises two layers; the upper layer is a sheet of plausible conductor, the lower layer is made of hard plates partitioned for bending the substrate. Circuit elements are loaded on the parts side and the substrate is bent with the parts side of conductor sheet being outside. The folded substrate is inserted into the slit of the PCB, fixed vertically and soldered. This process saves the spaces for hybrid 1C on the PCB and does not require the external lead of hybrid 1C.
Patent KR-870001835-B1 (KR)
Title: Television signal filtering system
Inventor: PRITCHARD DALTON H
IPC: H04N9/64
Filed: 1982-05-26
Granted: 1987-10-15
Abstract: The signal separation system includes a number of serially coupled signal transfer stages.  A video information signal is applied to an input stage and is delayed by at least the time interval of one horizontal television line as it passes through the stage.  Various ones of the stages which are 1-H apart in time include outputs, which are combined by weighting function and summing or difference circuits to produce bandwidth-limited transversal filter output signals. These signals are addtively and subtractively combined to produce a combed band passed chrominance signal and a fully restored and combed luminance signal.
Patent KR-850001264-B1 (KR)
Title: Automatic exchanges
Inventor: PARK BONG-HWAN
IPC: H04M3/00
Filed: 1983-10-10
Granted: 1985-08-26
Abstract: An automatic exchanger having 2 subscriber lines (or 1 subscriber line plus 1 local line) controls two telephones according to the situation. The exchanger enables the two telephones to be used as interphones, or to transfer a call from busy telephone to another one, or to provide a holding signal to the sender when both telephones are busy. It comprises inverters (21A,B), a controller (300) and logic gates.
Patent KR-920002147-B1 (KR)
Inventor: REMPEL GARRY L
IPC: C08C19/02
Filed: 1983-12-05
Granted: 1992-03-12
Abstract: 내용 없음.
Patent KR-920001698-B1 (KR)
Inventor: GODOU SHINICHI
IPC: G11B23/087
Filed: 1984-05-16
Granted: 1992-02-22
Abstract: 내용 없음.
Patent KR-890003598-B1 (KR)
Title: Process for preparation of cyanohydrins
Inventor: CHAN JOHN KAI-FAI
IPC: C07C67/00
Filed: 1984-06-29
Granted: 1989-09-27
Abstract: Cyanohydrins, used as a starting material in the prepn. of insecticides, are prepd. by reacting carbonyl compd. of formula R1R2CO (R1, R2=H, alkyl, haloalkyl, alkoxyalkyl, aryl, alkylaryl, haloaryl or alkoxyaryl) with a 5-75 wt.% metallic cyanide and hydrochloric acid at -20-30≰C in the presence of a solvent.  Thus, 70.2g isobutyladehyde is added to 116g water contg. 48g sodium cyanide at -5≰C for 1hr and stirred more 1hr then 37% HCl added to the soln. during 2.5hrs to give 2-hydroxy-3-methylbutyronitrile.
Patent KR-850000677-B1 (KR)
Title: Process for preparing(pipericinylalkyl)quinazoline derivatives
Inventor: VANDENBERK JAN
IPC: A61K31/4523
Filed: 1984-08-02
Granted: 1985-05-10
Abstract: The title compds. [I; R1 = H; Y = S; D = III; Alk = C1-4 alkylene; X = =C=O; Ar = phenyl; R6 = lower alkyloxy , useful as potent serotonin antogonists for anticon gestive use, were prepd. by the reaction of II and H2N-D. Thus, 1,1'-oxybisethane and 1-bromo-2-methylbenzene were mixed with Mg. The product was reacted with the mixture of 70 parts 1,1'-oxybisethane and 30 parts 1-(phenylmethyl)-4- piperidinecarbonitrile to give (2-methylphenyl) [1-(phenylmethyl)-4- piperidinyl methanone.
Patent KR-900006058-B1 (KR)
Inventor: MIZUTA KEN
IPC: H02P1/22
Filed: 1985-01-31
Granted: 1990-08-20
Abstract: 내용 없음.
Patent KR-910001175-B1 (KR)
Title: Method and apparatus for direct casting of crysalline strip in non-oxidizing atmoshphere
Inventor: JOHNS ROBERT H
IPC: B22D27/00
Filed: 1985-09-13
Granted: 1991-02-25
Abstract: A method is provided for directly casting molten metal (19) from a U-shaped structure of the exit end (26) of a casting vessel (18) onto a moving casting surface (20) to form a continuous strip (15) of crystalline material. The method includes providing a non-oxidizing atmosphere in a zone defined above the molten metal (19), across the width of the U-shaped structure and adjacent the casting surface (20). An apparatus is also provided.
Patent KR-900004631-B1 (KR)
Title: Semiconductor memory
Inventor: MATSUMURA TSUNEO
IPC: H01L21/8242
Filed: 1985-11-02
Granted: 1990-06-30
Abstract: The memory cell array is divided into sub array in a direction perpendicular to work lines. In each sub array, sub word lines and bit lines are disposed at all their intersections. Two different sub arrays constitute a unit cell array. The sub word line connected to a cell transistor in one of the sub arrays of the unit cell array is connected to a certain main word line, and a main word line which is not connected to the cell transistor in the array is passed through for connection with a sub word line of the other sub array. Main word lines are disposed at a different level to the sub word lines and memory cells.
Patent KR-880000313-B1 (KR)
Title: Galvanometer operating circuits for electro cardio graph
Inventor: LEE HEUNG-GYU
IPC: A61B5/04
Filed: 1985-12-18
Granted: 1988-03-19
Abstract: The invention employs a single source and the galvanometer comprises a signal transfer section consisting of transistors and resistors and simplifies the drive circuit by removing the complexity of the conventional circuit in supplying two sources for each element, thus stabilizing the signal output.
Patent KR-890004815-B1 (KR)
Title: Gas ventilator
Inventor: AHONG CHAN-YONG
IPC: F23J13/00
Filed: 1986-03-11
Granted: 1989-11-27
Abstract: A gas ventilator for use in a stovepipe includes a chimney cap and an exhaust fan (2) drives by an induced air in a natural convection flow.  The chimney cap positioned at the top of the stove pipe is formed in a ball shape with an outer shell (6), on which several air inlets (5) and several exhaust gas outlets (5') are provided, and an inner shell (6') integrally formed with several air inducing passagaes (7) directly communicating with the air inlets.  The exhaust fan positioned at the inlet portion of the stovepipe is mounted on the top of an air inducing pipe (4) concentrically arranged with the stovepipe.
Patent KR-890000281-B1 (KR)
Title: Filmtype solar cell using poly-cristal se
Inventor: SEO SONG-TAEK
IPC: H01L31/00
Filed: 1986-03-14
Granted: 1989-03-13
Abstract: This solar cell has a pilling-up structure.  On glass substrate (1) coated with ITO (2), n-type TiO2 layer (3) is deposited by RF Magnetron sputtering method at 250≰C, 5X10-2 Torr pressure, and then Se layer (4) is deposited at 1X10-6 Torr pressure and metal electrode Au (5) is deposited by ohmic contact and annealed at 180-200≰C during 2 minitue in oder to convert into amorphous state.
Patent KR-890000426-B1 (KR)
Title: Knitting needle driving mechanism of knitting machine
Inventor: YOSHINORI WATANABE
IPC: D04B15/82
Filed: 1986-07-24
Granted: 1989-03-17
Abstract: The appts. comprises multiple plate-like selector fingers, each mounted by its rear end and having at its free end a portion for cooperating with a butt of a needle or a jack.  A piezoelectric element is attached to one face or both faces of the selector finger to bend the finger between active and inactive positions in response to pulses from a pattern controller coupled to the elements by wires.
Patent KR-900005254-B1 (KR)
Title: Multicompartemntalized dermal and transdermal patches
Inventor: ANDRIOLA ROBERT
IPC: A61F13/02
Filed: 1986-12-16
Granted: 1990-07-21
Abstract: An improved transdermal or patch comprises a backing layer, which is non-permeable wrt a drug (I) to be contd. within the patch, and a membranous layer, which is prmeable to (I), and partially in contact with the backing layer so as to define multiple compartments, for (I) and, separately, another drug or different concn. of (I). Also present are an adhesive layer on the membranous layer and a removeable protective layer.
Patent KR-910000962-B1 (KR)
Inventor: TAKASHI ANDO
IPC: G11B15/675
Filed: 1987-01-23
Granted: 1991-02-19
Abstract: 내용 없음.
Patent KR-950007951-B1 (KR)
Inventor: FENDLEY JAMES R
IPC: H01J29/32
Filed: 1987-02-21
Granted: 1995-07-21
Abstract: 내용 없음.
Patent KR-890003245-B1 (KR)
Title: Process for food additives glanule of sodium cabohydrate
Inventor: KUM JU
IPC: A23L7/109
Filed: 1987-02-21
Granted: 1989-08-31
Abstract: Dissolve sodium carbonate (1 wt.) in water (3 wts.) and heat for 20 min at 100 deg.C, quench to 15-20 deg.C and stand for 1 hr, cool to 5-10 deg.C, stir for 5 min at 30 rpm 6-7 times of 30-minperiod and for 3 min 3-5 times of 1-hr-period to give the sodium carbonate decahydrate, useful for food additive.
Patent KR-890003827-B1 (KR)
Title: Process adapted to the manufacture of bicmos
Inventor: KIM KWANG-SOO
IPC: H01L21/331
Filed: 1987-07-25
Granted: 1989-10-05
Abstract: The BiCMOS means a combined semiconductor with high speed Bipolar and large scale CMOS.  The manufacturing process of BiCMOS involves: (a) forming p-well after the growth of epitaxy layer on n+  region formed on p-type substrate; (b) depositing the nitride film on the oxide film, and isolating the p+ junction; (c) forming base and collector of bipolar transistor by implanting impurities after growth of CMOS gate oxide; (d) forming a gate of CMOS and emitter of bipolar transistor after depositing oxide film on the n+ layer formed by impurities; (e) forming source and drain of PMOS, NMOS; (F) thermal oxidising or soarce and drain of CMOS, and Aluminium metalization.
Patent KR-900007803-B1 (KR)
Title: Method of heating plate crack prevention
Inventor: KIM SANG-BONG
IPC: B23K13/00
Filed: 1987-11-23
Granted: 1990-10-20
Abstract: The method prevents disc plate and layer cracking, in welding a it to a stainless-steel cooking ware with high frequency welder. The method consists of heating GS-203 carbon plate of 2-3 mm thickness to 900 degree from for 15 sec, then heating it for 12 sec after placing the carbon plate having a heating plate over the disc plate having layer for melt-fusing with one auother.
Patent KR-970005116-B1 (KR)
Inventor: KUSIYAWAGI TAKATSUKU
IPC: G03F7/20
Filed: 1988-05-25
Granted: 1997-04-12
Abstract: 내용 없음.
Patent KR-910002392-B1 (KR)
Title: Control system for the quantity of injection using motor control sequencer
Inventor: PARK CHANG-JAE
IPC: A61M5/00
Filed: 1988-06-02
Granted: 1991-04-22
Abstract: The method  controlls  a  DC  pump  motor  according  to  the measured number of drops of the injecting  solution  so  that  the desired number of drops is maintained. The method includes a  step for setting a first unit  time  period  an  a  first  programmable counter, a second step for  setting  a  second  unit  time  period obtained by dividing the  first  unit  time  period  at  a  second programmable counter, a third step for  setting  a  drop  adjuster with the number of drops per the first unit time period, a  fourth step for operating programmable time according to  the  number  of drops and for deoiding the injection time, and a  fifth  step  for driving the DC motor so that the desired  quantiity  corresponding to set at the first unit time period is injected during the second unit time period.
Patent KR-910005756-B1 (KR)
Inventor: YAMAMODO MASKI
IPC: H01G9/00
Filed: 1988-06-28
Granted: 1991-08-02
Abstract: 내용 없음.
Patent KR-930008056-B1 (KR)
Title: Method for describing arc
Inventor: YU SANG-CHOL
Filed: 1988-07-30
Granted: 1993-08-25
Abstract: This method improves a drawing speed with the table  matching technique and four-point algorithmo. As a result, a float-pointing calculation is eliminated  and  an  integer  calculation  only  is necessary, therefore, the drawing speed can be much improved.  The method consists:  classifying  the  arc  pattern  as  four  types; reading input parameters such as center point  (Pc),  start  angle (Q1), end angle (Q2), and radius  (R);  calculating  starting  and ending points (Ps,Pe); and deciding where the  differential  angle (Q2-Q1) is located in the quadrant to output a  detection  signal; with using this signal, deciding with which pattern table the  arc is matched finally, drawing  arcs  with  the  four  point  drawing algorithm.
Patent KR-930002422-B1 (KR)
Inventor: SCHERNER HELMUT
IPC: F16D13/22
Filed: 1988-07-29
Granted: 1993-03-30
Abstract: 내용 없음.
Patent KR-910000447-B1 (KR)
Title: Waste gas purifying method and apparatus
Inventor: CHANG HA-YUN
IPC: B01D53/77
Filed: 1988-11-09
Granted: 1991-01-25
Abstract: The purfying apparatus consists of an annular  pipe  (2)  for introducing waste gases,  a  cylindrical  tank  (3)  for  spraying cleaning solution to form a vortex with the intaken gases  in  the same direction, unidirectional nozzles (5)  attached  to  radially installed connection pipes (4) to (2), nozzles  (7)  perpendicular to water pipes (6) in (3),  a  pump  (P1)  connected  to  (6),  an auxiliary tank (8) in (3), and a solenoid valve (10) operated by a level probe (9) attached to the bottom of (8). The  gases  enhance contact with the solution to react for better removal of poisons.
Patent KR-930003441-B1 (KR)
Inventor: CURLEY JOHN L
IPC: G06F15/167
Filed: 1988-12-21
Granted: 1993-04-29
Abstract: 내용 없음.
Patent KR-920000504-B1 (KR)
Inventor: KITAMURA YATAKA
IPC: H02K9/19
Filed: 1989-01-30
Granted: 1992-01-14
Abstract: 내용 없음.
Patent KR-910009683-B1 (KR)
Inventor: DAKKAHASI HIDEO
IPC: B29C45/16
Filed: 1989-07-08
Granted: 1991-11-25
Abstract: 내용 없음.
Patent KR-0144152-B1 (KR)
Title: Dihydroxydiphenylcycloalkanes their preparation and their use for the preparation of high molecular polycarbonates
Inventor: FREITAG DIETER
IPC: C07C39/15
Filed: 1989-08-11
Granted: 1998-07-15
Abstract: The present invention relates to dihydroxydiphenylcycloalkanes of the formula (I) 
<IMAGE>
 in which R<1> and R<2>, independently of one another, are hydrogen, halogen, C1-C8-alkyl, C5-C6-cycloalkyl, C6-C10-aryl or C7-C12-aralkyl, m is an integer from 4 to 7, R<3> and R<4>, independently of one another and individually selectable for each X, are hydrogen or C1-C6-alkyl, and X is carbon, with the proviso that, on at least one atom X, R<3> and R<4> are simultaneously alkyl, to a process for their preparation, to the use of the diphenols of the formula (I) for the preparation of high-molecular-weight polycarbonates, to these polycarbonates and to their use, for example for the production of films.
Patent KR-940004583-B1 (KR)
Title: Data transmission unit between boards by using hand-shaking logics
Inventor: AN CHANG-KYU
IPC: G06F13/42
Filed: 1989-08-31
Granted: 1994-05-25
Abstract: The device comprises first and second boards, first and second 3-state octal D flip-flops, and third and fourth D flip-flops. The data input/output terminals of the first board are connected to the input terminals of the first 3-state octal D flip-flop and to output terminals of the second 3-state octal D flip-flop. The input/output terminals of the first and second 3-state octal D flip-flops are connected to those of the second board. The output terminals of the third and fourth D flip-flops are connected to the first and second boards. Therefore, the manufacturing cost of a product is saved.
Patent KR-0178019-B1 (KR)
Inventor: KAITO TAKASHI
IPC: H01J37/305
Filed: 1989-11-28
Granted: 1999-03-20
Abstract: 이온 비임의 전류를 스위칭하기 위한 스위칭 수단을 포함하는 집속 이온 비임 튜브와, XY 이동 기구 및 경사 기구를 포함하는 샘플단과, 샘플의 표면 상에 증착 물질 가스를 주사하는 가스총과, 2차 충전 입자 검출기를 포함함으로써, 주사 이온 마이크로스코프 기능, 마스크리스 에칭 기능 및 마스크리스 증착 기능 등의 세 가지 기능을 갖는 집속 이온 비임 장치를 사용하는 마이크로 단면의 가공 및 관찰 방법. 상기 방법은, 주사 이온 마이크로스코프 기능을 통해, 상기 샘플 표면상에 절단 에지의 위치를 결정하는 제1단계와, 마스크리스 증착 기능을 통해, 상기 절단 에지 위치를 포함하는 영역 상에 부분적으로 막을 증착시키는 제2단계와, 마스크리스 에칭 기능을 통해, 단면을 가공하고 노출시키기 위해 직사각형 홈의 한 측면을 상기 절단 에지에 맞춰 상기 직사각형 홈을 형성하는 제3단계와, 상기 단면을 관찰 방향에 향하도록 상기 샘플단을 경사지게 하는 제4단계와, 상기 주사 이온 마이크로스코프 기능을 통해, 상기 형성된 홈의 단면을 관찰하는 제5단계 등의 단계를 포함하여, 상기 샘플의 특정 영역의 단면을 매우 정확이 가공하고 그 가공된 단면을 관찰한다.
Patent KR-960016679-B1 (KR)
Title: Fluid monitoring apparatus and method
Inventor: POLLOCK RICHARD A
IPC: A61B19/00
Filed: 1989-04-06
Granted: 1996-12-20
Abstract: Apparatus for accurately and more safely monitoring blood and bodily fluids in a patient. In one embodiment, at least one load cell supports a container for receiving various sizes of sponges that hold such fluids. The sponges may be sorted into the container utilizing a sorting grip located above or forming a part of the container, and photoelectric or other sensors detect the number of sponges placed into the container via each opening in the grid. The load cells and sensors are connected to controller circuitry which counts, tracks and displays the number of each size of sponges in the container and the weight of fluid in the sponges. The weighing apparatus may be connected to a computer that is programed to read information from the weighing apparatus and from its own keyboard to calculate, update, store, display and print values corresponding to amounts of suction products, urine, crystalloids, irrigation, miscellaneous blood products including whole blood, fresh frozen plasma, packed red blood cells, platelets, cryoprecipitates and stimates introduced to or removed from the patient. The processor of the weighing apparatus may be adapted to perform the computer's functions in order to reduce the size of the apparatus. Alternatively, a computer without a weighing apparatus may be used to account for the values mentioned above, in which case the operator manually enters information relating to numbers and weights of sponges.
Patent KR-920010120-B1 (KR)
Inventor: YOSHIATSU SAWARAKI
IPC: C22C30/00
Filed: 1990-01-30
Granted: 1992-11-16
Abstract: 내용 없음.
Patent KR-0142324-B1 (KR)
Inventor: THEROS BRIAN S
IPC: B65D75/36
Filed: 1990-02-23
Granted: 1998-07-15
Abstract: 내용없음
Patent KR-930010502-B1 (KR)
Inventor: LENNY WILLIAM E
IPC: C08F10/00
Filed: 1990-03-22
Granted: 1993-10-25
Abstract: 내용 없음.
Patent KR-930000824-B1 (KR)
Title: Photo-electric integrated circuit and its manufacturing method
Inventor: KIM JONG-RYOL
IPC: H01L33/00
Filed: 1990-05-08
Granted: 1993-02-05
Abstract: The  photoelectric  IC  having  a  laser  diode  and  a  HEMT transistor formed in a single chip comprises a first semiconductor layer (33) formed on the substrate (31) and used as a buffer layer of the HEMT, a second semiconductor layer (35) used as a spacer of the HEMT, a third semiconductor layer (37) used as a source of the HEMT and a first clad of the laser diode, a  fourth  semiconductor layer (39)  having  a  fifth  semiconductor  layers  (39a)  formed between the sixth and seventh semiconductor layers, and the  layer (39) being used as an active layer of the laser diode,  an  eighth semiconductor layer (41) used as a second clad of the laser diode, a ninth semiconductor layer (43) used as a cap of the laser diode, a  second electrode  (47),  a  first  electrode  (48),  a   tenth semiconductor layer (45) used as a cap of  the  HEMT,  source  and drain electrodes (50,51), a gate  electrode  (53)  and  an  device isolation area (55) for isolating between the laser diode and  the HEMT.
Patent KR-930005535-B1 (KR)
Title: Deinking agent
Inventor: HWANG CHOL-HO
IPC: D21C5/02
Filed: 1990-06-29
Granted: 1993-06-22
Abstract: This is a new liquid phase deinking agent which can  be  used for laser printing waste paper and newspapers.  The  manufacturing of deinking agent comprises: (A) dissolving 1 kg rosin  and  1  kg oleic acid in 10 kg tetrachloroethylene; (B) adding 300  g  maleic acid anhydride and 500 g water; (C) stirring for 1 Hr at 120 deg.C under pressure;  (D)  cooling  at  room  temp.;  and  (E)  adding tetrachloroethylene and making the volume 200  kg.  This  deinking agent does not contain detergents and can be used  at  room  temp. Also equipment cost and electric consumption can be reduced.
Patent KR-930005483-B1 (KR)
Title: Memory device manufacturing method using self-alignment siliside
Inventor: KIM HYONG-JONG
IPC: H01L29/78
Filed: 1990-07-10
Granted: 1993-06-22
Abstract: The memory element is mfd. by (a) forming a gate  oxide  film (2) on the silicon substrate  (1),  laminating  a  polycrystalline silicon (3), and then lifting off  the  unnecessary  part  of  the silicon (3) by the photoetching  method,  (b)  laminating  a  high melting point metal (4) on the silicon (3), siliciding  a  contact part of the silicon (3) and the metal (4), and  then  lifting  off the non- siliciding part, and (c)  implanting  an  ion  to  form  a source/ drain region, and then heat-treating it.
Patent KR-0167548-B1 (KR)
Inventor: LEWIS LARRY NEIL
IPC: C08K9/00
Filed: 1990-10-18
Granted: 1999-03-20
Abstract: 비닐-치환된 오가노폴리실옥산 유체와 실옥산 하이드라이드의 저장안정성 열경화성 혼합물이 제공된다. 상기 일액성 오가노폴리실옥산 혼합물은 백금 금속 착물(예:백금 할로겐화물과 1,5-사이클로옥타디엔의 착물) 및 사이클로덱스트린으로 이루어진 포접 화합물로 촉매화된다.
Patent KR-930003366-B1 (KR)
Title: Polyester filament yarn of a good dimensional stability and its manufacturing method
Inventor: KIM KYOK-HYON
IPC: D01F6/62
Filed: 1990-10-22
Granted: 1993-04-26
Abstract: The method for producing the yarn whose crystalline vol. is 2.0×105 - 4.0×105 angstroms3, degree of crystallization above 50 %, period of length 140-160 angstroms, max. heat-shrinkage stress below 0.4 g/d, ΔS177+E4.5 below 12, initial modulus below 90 g/d, Eb above 11 (where ΔS177= dry-heat shrinkage rate after treating at 177 deg.C, for 2 min, E4.5= elongation at load of 4.5 kg in load-elongation graph, Eb= elongation at break) comprises: making undrawn yarn of av. double refringence above 0.2 by using polyester polymer, whose intrinsic viscosity is above 1.0, and which is composed of PET, the whole repeat units of which occupy more than 95 mol% among molecular chain; multi-stage drawing in a way that temp. between first roller and second roller  is maintained between Tg and Tcc.
Patent KR-930004742-B1 (KR)
Inventor: SAITO HIROSHI
IPC: H01G4/12
Filed: 1990-11-30
Granted: 1993-06-03
Abstract: 내용 없음.
Patent KR-930004093-B1 (KR)
Title: Probability increasing device and method
Inventor: PARK CHAN-HYON
IPC: H04B7/24
Filed: 1990-11-30
Granted: 1993-05-20
Abstract: The  apparatus  maintains  the  maximum  output  power  of  a cellular phone when accessing a cell site by cutting off  negative feed-back automatic power control  to  improve  the  reliabity  of access. It includes a coupling section  (2)  connected  to  an  HF power amplifier (1)  for  detecting  feed-back  parameter,  a  D/A converter (5) for  setting  the  output  level  of  high-frequency component, a comparator (4) for comparing the feed-back  parameter with the output level of high-frequency component, and  a  current boosting section (6) for controlling the HF power amplifier (1).
Patent KR-930010486-B1 (KR)
Title: Picture image encoder and decoder
Inventor: YUN JONG-KYONG
IPC: H04N7/12
Filed: 1990-12-31
Granted: 1993-10-25
Abstract: The adaptive video signal encoder and decoder includes an A/D converter for converting video signal to digital signal, a spatial low-pass  filter  for  dividing  spatial  brightness  signal  from digital video signal, a  low-pass  filter  for  detecting  spatial brightness signal in bandwidth of recording tape,  a  soft  switch for mixing spatial brightness signal in  the  bandwidth  and  time brightness signal, a frequency  overlapping  circuit  for  damping brightness signal level appropriately mixing the damped signal and brightness signal  in  the  bandwidth  and  a  D/A  converter  for converting mixed signal to analog signal.
Patent KR-930008478-B1 (KR)
Title: Process for preparation of cyprofloxacin
Inventor: CHOE SU-CHANG
IPC: C07D401/04
Filed: 1990-12-31
Granted: 1993-09-07
Abstract: Ciprofloxacin  (I),  its  pharmaceutically  acceptable  acid addition    salts    and    hydrates    are    prepared.      Thus 3- acetyl-1-cyclopropyl-1,4-dihydro-6,7-difluoro-4- oxoquinoline is reacted with piperazines in organic  solvent  as  tetrahydrofuran, ethanol   or   acetonitrile   at   95-110    deg.C     to     give 3- acetyl-1-cyclopropyl-1,4dihydro-6-fluoro-7-piperazine-4-oxoquinoline.  This  compound   is oxidized by haloform reaction with alkali metal hypohalite to give (I). (I) have antibacterial activities against gram-positive  and gram-negative bacteria.