baber/WOPTO huggingface dataset:
Patent KR-860000283-B1 (KR)
Title: Process for preparing 7-acylamino-3-(thio-substituted)methyl-3-cephem-4-carboxylic acid-1-oxide derivatives
Inventor: BRUYNES CORNELIS ADRIANUS
IPC: C07D501/36
Filed: 1981-09-03
Granted: 1986-03-26
Abstract: 7-acylamino-3-(thio substituted) methyl-3-cephem-4-carboxylic acid-1- oxide derivatives are prepd. by the reaction of 3-acylamino -3- bromomethyl-3-cephem-4-carboxylic acid-1-oxide (I) with silylic thiol. The compd. (I) is in acid form, ester form or silyl ester form. The acylamine group in compd. (I) is phenyl acetoamine, phenoxyacetoamine or formamide. The reaction is performed at -20≰C  80≰C in an inert solvent. The proper solvent is a hydrocarbon, chlorohydrocarbon ester. This method shows improved product yield.
Patent KR-910001851-B1 (KR)
Inventor: EATON WILLIAM L
IPC: H02M7/538
Filed: 1983-06-01
Granted: 1991-03-28
Abstract: 내용 없음.
Patent KR-910007153-B1 (KR)
Inventor: MILLER RICHARD A
IPC: B23K26/04
Filed: 1983-09-01
Granted: 1991-09-18
Abstract: 내용 없음.
Patent KR-910008958-B1 (KR)
Inventor: MISERICH KENNETH W
IPC: A43B5/00
Filed: 1984-01-09
Granted: 1991-10-26
Abstract: 내용 없음.
Patent KR-900004447-B1 (KR)
Title: Microwave oven display power supply
Inventor: AKAO HIDEYUKI
IPC: F24C7/02
Filed: 1984-03-26
Granted: 1990-06-25
Abstract: The power supply rectifies the output of the secondary coil of the commercial AC power transformer, followed by rectifying a half wave of the second secondary coil of the same ac power transformer before feeding one-half cycle of the commercial AC current to the heater of the fluorescent display tube. The power supply uses a rectifying circuit for generating the double voltage for the second secondary coil, the double voltage being mixed in the direction in which it becomes lower than the stable voltage of the microcomputer. The display erase potential VP is thus generated. As a result, luminance can be held constant in respective display positions without causing the voltage of the display tube to vary throughout the one-off operations of the heating power source.
Patent KR-910003487-B1 (KR)
Inventor: ANAJAWA OSAMU
IPC: G07F11/10
Filed: 1984-06-09
Granted: 1991-06-01
Abstract: 내용 없음.
Patent KR-910000158-B1 (KR)
Inventor: NIEUWKAMP WOLFGANG
IPC: B05B7/06
Filed: 1984-07-14
Granted: 1991-01-21
Abstract: 내용 없음.
Patent KR-920011041-B1 (KR)
Inventor: NAKADA AKIRA
IPC: G10H1/32
Filed: 1984-12-12
Granted: 1992-12-26
Abstract: 내용 없음.
Patent KR-890005337-B1 (KR)
Inventor: WADANABE HARUO
IPC: G02F1/1335
Filed: 1985-05-21
Granted: 1989-12-22
Abstract: 내용 없음.
Patent KR-930001426-B1 (KR)
Inventor: BOLLMANN JEAN-JACQUES
IPC: E02D27/00
Filed: 1984-12-10
Granted: 1993-02-27
Abstract: 내용 없음.
Patent KR-890003185-B1 (KR)
Title: An apparatus transmitting radio frequency multi control signals
Inventor: LEE BANG-WON
IPC: H04B7/00
Filed: 1986-07-16
Granted: 1989-08-25
Abstract: The transmitter has a integrated circuit for transmitting the modulated signals with various pulse width for remote control. The circuit includes an auto power switching circuit (16) operated by the signals from selection switches (S1-S), a voltage regulator (17) for constant DC voltage regardless to input voltage variation caused by selecting the swtiches, pulse width modulators (11-13) for generating signals with certain pulse width according to the switch signals, an oscillator (15) for generating the carrier wave, and a modulator for modulating the switch signals with carrier wave.
Patent KR-900000422-B1 (KR)
Title: Epoxy resin composition
Inventor: LEE CHUNG-DAE
IPC: C08L63/04
Filed: 1986-10-16
Granted: 1990-01-30
Abstract: S-Triazole ring-contg. imidazole-type compd. (I,R1=H, CH3,CH3CH2;R2 =C1-15 satd. hydrocarbon, phenyl, cyclohexyl) and polymide-type compd. (II,R3=C15-25 straight chain hydrocarbon; a,b= the same or differnt integer 1-10; c=integer 2-12) are added to epoxy resin compn. made from novolak-type epoxy resin and phenolic resin-type curing agent with org. phosphinic compd. to give epoxy resin compn. having an antihumidity and electric insulation property.  The org. phosphinic compd. and I mixed as 95:5-60:40 wt.ratio are added to the resin at the ratio of 0.05-10wt.% on the basis of total weight of epoxy and curing agent and 0.5-10 wt.% II added to the resin.
Patent KR-900002755-B1 (KR)
Title: N-(pyrrol-1-yl) pyridinamines and their preparation
Inventor: EFFLAND RICARD C
IPC: A61K31/4427
Filed: 1986-12-03
Granted: 1990-04-28
Abstract: N-(pyrrol-1-yl) pyridinamines of formula (I) and their acid addn. salts are prepard.  In (I), R is H, lower alkyl, halogen, cyano, lower alkanoyl or aroyl; R1 is H, lower alkyl, phenyl, alkanoyl, alkenoyl, aminophenyl arylaminocarbonyl or alkynol; R2 is H, NO2, NH2, halogen or lower alkyl.  (I) are useful for treating dysfunctions with decreased cholinergic function esp. memory loss and alzheimers disease.
Patent KR-950003108-B1 (KR)
Inventor: SAND DOUGLAS S
IPC: H04Q3/545
Filed: 1986-12-12
Granted: 1995-04-01
Abstract: 내용 없음.
Patent KR-960005114-B1 (KR)
Inventor: OKADA TOSHIYUKI
IPC: G11B5/127
Filed: 1986-12-27
Granted: 1996-04-20
Abstract: 내용 없음.
Patent KR-930003392-B1 (KR)
Title: Process for manufacturing a liquid absorbing pad in particular for use in soft hygiene articles and sanitary products
Inventor: DALKIER PETER
IPC: D04H1/04
Filed: 1985-10-01
Granted: 1993-04-26
Abstract: A liquid absorbing pad, in particular for use in hygiene articles and sanitary products, such as diapers, bed pads, sanitary napkins, pads for incontinence, panty shields, nursing pads or the like, is produced in a dry and direct process on the basis of wet-strength and/or coated paper waste, especially originating from the production of food packages, milk carton packages, deep-freeze packages, disposable tableware and the like. The waste is cut and defibrated, and during the defibration or just before it a maximum of 25% by volume, based on the volume of the paper waste, of a mixture of water and a surfactant is added to reestablish the absorption capacity of the fibres. Starting materials otherwise difficult to process can thus be used in a dry and direct process.
Patent KR-0142334-B1 (KR)
Title: 확장된 비트 슬라이스 프로세서 산술논리 연산 유니트
IPC: G06F7/57
Filed: 1987-01-20
Granted: 1998-07-01
Abstract: 내용없음
Patent KR-890002054-B1 (KR)
Title: A method and composition for aluminium nitride
Inventor: KURAMOTO NOBUUGI
IPC: C04B35/581
Filed: 1987-05-16
Granted: 1989-06-15
Abstract: A fine aluminium nitride powder with an average particle size below 2 microns and a density above 2.9 g/cm3 contains at least 94 wt.% aluminium nitride, at most 1.5 wt.% bound-oxygen and at most 0.5 wt.% metal impurity.  The metal impurity is Fe, Cr, Ni, Co, Cu, Zn and/or Ti.  The powder is produced by heating Al2O3, C and above 0.2% additive at 1700-2100≰C.  The powder can be used to produce high purity, high density sintered products.
Patent KR-910002125-B1 (KR)
Title: Fluid actuator in transfer machine
Inventor: SON KYUNG-HO
IPC: B23Q7/00
Filed: 1987-06-02
Granted: 1991-04-04
Abstract: The  hydraulic  actuator  for  transfer  machines  comprises cylinders (12) facing each other, a  piston  rod  (13)  shared  by pistons (14) within the cylinders,  a  passageway  (17)  having  a check valve (16) at the entrance of the cylinders,  a  fluid  port (15) positioned at a cylinder head, a main passageway (19)  having a valve rod (18), a buffering passageway (20) having a  rod  valve (20'), a guide rod (21) in touch with on adjustment bolt  (22)  in the cylinder head, a driving pinion (25)  geared  with  a  toothed portion of the piston rod (13), an output shaft (24) fixed at  the center of the driving pinion (25), and a  slide  bearing  (29)  in connection with a sliding portion (28) of the piston rod.
Patent KR-940010097-B1 (KR)
Inventor: WASHBURN MALCOLM E
IPC: C04B35/565
Filed: 1987-06-04
Granted: 1994-10-21
Abstract: 내용 없음.
Patent KR-900006047-B1 (KR)
Title: Voltage level converter
Inventor: KIM HYUNG-SOK
IPC: H03K19/018
Filed: 1987-07-07
Granted: 1990-08-20
Abstract: The TTL to ECL level converter whose input comprises emitter coupled pair to improve the level converting speed receives the TTL level input data whose level is medium state at base of a transistor (Q1). When the input TTL level is high, the current flows from an active pull-up transistor of the TTL circuit through a resistor (R3), but flows to an active pull-down transistor of the TTL circuit through a transistor (Q3) and resistor (R4) when the level is low. The TTL level received to the transistor (Q1) is compared with a reference level applied to base of a transistor (Q2) and converted to inner voltage level to provide the ECL level signal through a level shifting circuit,
Patent KR-900006111-B1 (KR)
Title: Method and equipment for placing glass cathode ray tube face plate
Inventor: SHANABERGER DAVID
IPC: C03B11/16
Filed: 1987-07-24
Granted: 1990-08-22
Abstract: CRT Faceplate press includes a ram, a plunger for faceplates on the ram and a female mould for faceplates in registry with the plunger at the limit of pressing travel of the plunger. Pressing ram control uses a servo control involving a change from high speed to moderate speed and then to low speed. The ram and plunger are microprocessor controlled and operated with open loop position based control at relatively high speeds when the plunger is not in critical contact with the glass. The speed is uniform as the plunger enters the glass and closed loop pressure control is used after the viewing region of the cavity for the faceplate between the plunger and mould has been filled out at uniform plunger pressing speed. Pressure is ramped down to a pressing dwell pressure by pressure control and held at this pressure.
Patent KR-910008454-B1 (KR)
Title: Transformation circuit
Inventor: HARTNACK WOLFGANG
IPC: H04N7/30
Filed: 1987-09-30
Granted: 1991-10-15
Abstract: A circuit for the line-by-line or column-by-column transformation of digital video signals. <IMAGE>
Patent KR-950002982-B1 (KR)
Inventor: NORDEEN CRAIG A
IPC: F15C3/14
Filed: 1987-10-30
Granted: 1995-03-29
Abstract: 내용 없음.
Patent KR-910002007-B1 (KR)
Title: Coal stove
Inventor: ROH KYUNG-HO
IPC: F23B90/00
Filed: 1987-11-12
Granted: 1991-03-30
Abstract: The stove  using  pulverized  coal  with  air  paths  has  an automatic fuel feeder and a  boiler  for  a  radiator.  The  stove includes a fuel feeding means automatically for dropping coal into combustion chamber; a combustion device for promoting ignition  of pulverized coal and transfer ring radiation heat directeky through the front glass; on ash tray for supporting feeding  and  ignition of coal; a water heating boiler for a radiator receiving the waste heat from the backside of the stove.
Patent KR-940006348-B1 (KR)
Inventor: KAPUR RAJAN N
IPC: G09G1/00
Filed: 1986-06-27
Granted: 1994-07-18
Abstract: 내용 없음.
Patent KR-950005126-B1 (KR)
Inventor: REMARKS WILLIAM J
IPC: B65D5/56
Filed: 1986-12-05
Granted: 1995-05-18
Abstract: 내용 없음.
Patent KR-930002053-B1 (KR)
Inventor: ISHIDA MUNEO
IPC: C08K3/36
Filed: 1988-02-10
Granted: 1993-03-22
Abstract: 내용 없음.
Patent KR-920010323-B1 (KR)
Title: Digital phase locked loop system of hdtv
Inventor: LEE KI-SOK
IPC: H04N5/06
Filed: 1988-08-30
Granted: 1992-11-26
Abstract: The system provides not only the high definition of image and exact synchronization  timing  but  also  the  steady   operation regardless of the change of environmental  conditions  and  device characteristics by using the digital phase locked  loop  (PLL)  in high  definition  television  (HDTV).  The  flip-flop  delays  the digitalized image information according to  the  phase  difference between the inner control signal and the transmission signal.  The oscillation frequency of the voltage  control  oscillator  becomes higher with the increase of control voltage. This system is useful for detecting the exact image signal.
Patent KR-910006078-B1 (KR)
Inventor: TOMODA HARUHISA
IPC: G11B27/11
Filed: 1988-09-02
Granted: 1991-08-12
Abstract: 내용 없음.
Patent KR-920002750-B1 (KR)
Inventor: NAKADA SEIICHI
IPC: D06F79/02
Filed: 1988-10-05
Granted: 1992-04-02
Abstract: 내용 없음.
Patent KR-960000393-B1 (KR)
Title: Composition for preventing graying of the hair
Inventor: SUGIYAMA KEIKICHI
IPC: A61Q5/10
Filed: 1989-02-09
Granted: 1996-01-06
Abstract: A composition for preventing graying of the hair and restoring grayed hair to its natural color comprises an effective amount of one member selected from the group consisting of cAMP compounds such as 8-butylthio cAMP-Na or 8-methoxy cAMP-Na and water. The composition can prevent graying of the hair and restoring grayed hair to its natural color upon application to the scalp, the effective component is very stable even in the form of compositions containing water and the composition does not cause quality deteriorations such as giving out of bad smell.
Patent KR-920001438-B1 (KR)
Title: Prearrangement management method in switching center
Inventor: LIM IN-TAEK
IPC: H04M3/22
Filed: 1989-04-29
Granted: 1992-02-13
Abstract: discriminating  whether  a key input through a SIO (11)  from  a  terminal  unit  (10)  is  a command code; carrying out the command code upon finding that  the command code is not a reservation  request,  and  terminating  the operation after carrying out the  command  code;  registering  the time of the reservation into a time region (21) of  a  reservation table of a memory (13) upon  finding  that  the  key  input  is  a reservation request code; and  registering  the  contents  of  the reservation request into a command region (22)  of  a  reservation table.
Patent KR-920002895-B1 (KR)
Inventor: SHIMAZAKI TETSUO
IPC: H01Q11/16
Filed: 1989-06-03
Granted: 1992-04-06
Abstract: 내용 없음.
Patent KR-920008705-B1 (KR)
Inventor: KIM KI-IL
IPC: B60J11/00
Filed: 1989-07-22
Granted: 1992-10-08
Abstract: 내용 없음.
Patent KR-930006664-B1 (KR)
Inventor: WATANABE FUMIO
IPC: H04N5/50
Filed: 1989-08-16
Granted: 1993-07-22
Abstract: 내용 없음.
Patent KR-940002513-B1 (KR)
Inventor: YANAGISAWA MICHIO
IPC: G01N27/12
Filed: 1989-08-21
Granted: 1994-03-25
Abstract: 내용 없음.
Patent KR-0138764-B1 (KR)
Inventor: FLING RUSSELL THOMAS
IPC: H04N7/26
Filed: 1989-09-22
Granted: 1998-06-15
Abstract: 내용 없음.
Patent KR-930000552-B1 (KR)
Inventor: YOSHIOKA TAKEO
IPC: H01S3/134
Filed: 1989-09-22
Granted: 1993-01-25
Abstract: 내용 없음.
Patent KR-0151724-B1 (KR)
Inventor: SAITO CHUICHI
IPC: B66B23/22
Filed: 1989-11-03
Granted: 1998-10-15
Abstract: 내용없음
Patent KR-960001966-B1 (KR)
Inventor: SUGIYAMA IKUO
IPC: B29C49/64
Filed: 1988-06-08
Granted: 1996-02-08
Abstract: 내용 없음.
Patent KR-0170371-B1 (KR)
Inventor: SWINDAL JAMES L
IPC: G01L9/00
Filed: 1990-02-27
Granted: 1999-02-01
Abstract: 내용 없음.
Patent KR-0161862-B1 (KR)
Inventor: PARK SUNG-MO
IPC: H01L21/66
Filed: 1990-04-12
Granted: 1999-02-01
Abstract: 내용 없음.
Patent KR-0157050-B1 (KR)
Inventor: BUTTLER III JOHN MEIGS
IPC: H02K3/50
Filed: 1990-04-19
Granted: 1998-12-15
Abstract: 터어빈 발전기 고정자의 단부를 싸는 도체(3)용 바이어스된 고정 시스템은 방사상 및 원주 방향으로 단부를 싸는 도체(3)를 압축시키는 바이어스된 웨지시스템(35) 및 지지링(15)을 구비한다. 바이어스된 웨지 시스템(35)은 접시 스프링 와셔(79)의 사용에 의해 지지링(15)을 향해 바이어스되는 삼각 형태의 웨지(67)와 대향 앵귤러면(51, 53)을 갖춘 한쌍의 스페이셔 블록(37, 39)을 포함한다.
Patent KR-930000705-B1 (KR)
Title: Dither matrix method for facsimile telegraph
Inventor: KANG KU-SU
IPC: H04N1/41
Filed: 1990-06-21
Granted: 1993-01-29
Abstract: The half tone image is expressed  finely  by  adjusting  each weighting factor of the dither  matrix,  which  uses  the  average brightness and the standard deviation  of  the  input  image.  The method comprises: (a) transfering the M x N image data  stored  in the signal processor  to  the  first  buffer;  (b)  inputting  the weighting factors of K x K dither matrix and storing them  to  the second buffer; (c) calculating  the  average  brightness  and  the standard deviation of all input image data pixel and storing  them to the first and second registers; (d)  converting  the  weighting factors stored in the buffers  with  the  equation  (1);  and  (e) expressing  the  half  tone  image  by  comparing  the   converted weighting factor with the M x N image data while shifting the K  x K dither matrix.
Patent KR-930011031-B1 (KR)
Title: Ldd structure and manufacturing method thereof
Inventor: KU JONG-SOK
IPC: H01L29/10
Filed: 1990-06-30
Granted: 1993-11-19
Abstract: LDD transistor production involves (a) forming a field  oxide layer, growing a gate oxide layer and  successively  depositing  a poly nitride layer; (b) forming a sidewall confinement, depositing an undoped poly and implanting impurity atom ions;  (c)  stripping the poly except for the portion on the gate and  the  field  oxide layer; (d) etching away the  sidewall  confinement,  removing  the photolacquer and implanting impurity atom ions to  form  a  P-type pocket and a n- region  only  at  the  previous  location  of  the sidewall confinement; and (e) filling  with  insulating  material, and heat heating to form a  flat  n(+)  region  with  the  aid  of impurity atoms.
Patent KR-100213415-B1 (KR)
Title: Sample data transmission apparatus
Inventor: RAGADEC ROGER
IPC: G11B20/12
Filed: 1990-07-27
Granted: 1999-08-02
Abstract: In a sampled data transmitting apparatus in which the sampled data to be transmitted are divided into odd-numbered samples and even-numbered samples and arranged in different rows of a two-dimensional data array, and in which error correction codes are annexed to each row and to each column of the two-dimensional data array, the row arraying sequence in one of the odd-numbered or even-numbered rows is caused to differ from the row arraying sequence in the other of the odd-numbered or even-numbe red rows so that odd-numbe red data and even numbered data continuous with the odd-numbered data are not arranged in one row. In this manner, even when the error correction becomes unfeasible by the error correcting code for one row, interpolation becomes feasible because there exist no odd-numbered data or even-numbered data continuous to each other in the row.
Patent KR-930001261-B1 (KR)
Title: Process for preparing citric acid by tangerin peelings
Inventor: KANG SHIN-KWON
IPC: C12P7/48
Filed: 1990-08-31
Granted: 1993-02-22
Abstract: A citric acid  is  prepd.  by  (a)  drying  orange  peel  and pulverizing to obtain the 15-30 mesh powder, (b) mixing the  obtd. powder with water, ammonium nitrate  and  magnesium  sulfate,  (c) adjusting the mixt. into pH 4-5, (d) innoculating the obtd.  mixt. with Aspergillus niger NRRL 2322 and fermenting at 10-35 deg.C for 3 days, and (e) separating citric acid from  the  fermented  broth and purifying to obtain the final product.
Patent KR-930003397-B1 (KR)
Title: Process for manufacturing of aromatic polyamide pulp
Inventor: OH SANG-YOL
IPC: D21H13/26
Filed: 1990-12-17
Granted: 1993-04-26
Abstract: This is new aromatic polyamide pulp whose  phisical  property is improved. The manufacturing  method  comprises:  (A)  preparing primary polymerizing solvent by dissolving 0.01-50 wt.% transition metal complex with inorganic salts and halogen, or 3A,4A,5A or  6A halide and tert-amine in organic solvent; (B)  dissolving  0.01-30 wt.%  aromatic  diamine  in  prim.   polymerizing   solvent;   (C) polymerizing anisotropic gell by adding aromatic diacid  chloride; and (D) cleaving the (C) polymer in the water containing 0-30 wt.% polym. solvent or in 0-20 % alkali  solution.  The  pref.  organic solvent   is   one   or   mixture   of     N-methyl-2-pyrrolidone, N,N-dimethylacetamide,                     hexamethylphosphoamide, N,N,N',N'-tetramethylurea,       N,N-dimethylformamide,        and dimethylsulfoxide.
Patent KR-0159292-B1 (KR)
Inventor: KIM INN-SOO
IPC: H04N5/60
Filed: 1991-01-18
Granted: 1999-01-15
Abstract: 텔레비젼의 온 타이머 기능에 알람 기능을 부가하는 장치 및 방법에 관한 것으로, 온 타이머 모드에서 원하는 시간과 채널을 선택하고 알람기능을 선택한 다음 알람음의 종류를 선택해두고 세팅된 시간이 되면 자동으로 전원을 온하고 채널을 선택한 다음 정해진 높이의 알람음을 발생하여 사용자에게 보다 편리함을 제공한다.
Patent KR-930004018-B1 (KR)
Title: Indicating device for moving cages
Inventor: PARK U-YONG
IPC: E04H6/00
Filed: 1991-03-04
Granted: 1993-05-19
Abstract: In a vertical circulating  parking  system  a  cage  movement displayer is able to display the  position  of  a  cage  by  seven segments.  This  cage  movement  displayer  consists  of  a  pulse generating circuit, a counter, an input switch, a reset switch and preset circuit connected to the counter, a memory for  the  output of the counter, a decorder, and a seven-segment member to  display the output of the decorder  by  a  number.  The  pulse  generating circuit generates up and down  pulses,  detecting  right  or  left rotation of the cage.
Patent KR-940011854-B1 (KR)
Title: Pipe coupling
Inventor: STRAUB IMMANUEL
IPC: F16L23/04
Filed: 1991-03-15
Granted: 1994-12-27
Abstract: A pipe coupling has a cylindrical housing which is split in the longitudinal direction and has inwardly bent end walls and a steel insert sheet of analogous design bridging the gap in the housing. With the aid of a closure with tensioning screws, the housing can be constricted in the manner of a pipe clip, such that a sealing sleeve positioned between the housing and a pipe is compressed in the circumferential direction and brought to bear on the pipes to be sealed off. The closure is offset in the circumferential direction with respect to the housing gap, and the end section of the housing projecting through the region of the tensioning screws is overlapped by a slideway anchored on the other end section. By this means, dimensional stability is increased without increasing the wall thickness, or the constrictability of the housing is guaranteed despite an increased wall thickness.
Patent KR-940007947-B1 (KR)
Title: Tray for loading semiconductor package
Inventor: HYON IN-HO
IPC: H01L23/00
Filed: 1991-06-18
Granted: 1994-08-29
Abstract: The tray protects a thermal deformation by support of tray structure, and improves a productivity. The tray includes an inserting recess (11a) which holds a semiconductor package (12), a buffering recess (11c) which is inserted in outer rim (11b) of tray. The temperature of semiconductor inside is 50-145 deg.C during 4-24 hours. The thickness of the tray is 0.2-0.7 mm by a press molding or injection molding.
Patent KR-0162297-B1 (KR)
Inventor: CHOE WON-JIN
IPC: H01S5/30
Filed: 1991-07-02
Granted: 1999-02-01
Abstract: 본 발명은 헤테로다인 배리어 블로킹 반도체 레이저 다이오드의 제조방법에 있어서 전장의 일측 종단부가 확산되는 것을 방지하고, 비점수차의 값을 대폭적으로 줄이는 수단에 관한 것으로, P-N접합의 P측과 N측 양쪽에 전류 주입 제한 영역을 두어 전장이 같히게 함으로써 전장의 일측이 확산되는 것을 방지하고, 이로인하여 더욱 낮은 발진 개시치와 높은 효율을 얻을 수 있게되며, 양측의 클래드층에서 광 가이드을 층을 삽입하게 함으로써 굴절률 차이가 생기게 하고 이에의해 비 점수차의 값을 한층 줄일 수 있게 하였다.
Patent KR-0137757-B1 (KR)
Inventor: HORIGAMI KINJI
IPC: G06K9/46
Filed: 1991-07-06
Granted: 1998-06-15
Abstract: 본 발명은, TV카메라로 촬영한 영상신호를 화상처리함으로써, 대상물의 형상이나 유무를 판별하는 인식방법 및 인식장치에 관한 것으로서, 영상신호를 표본화 및 양자화해서 디지틀 신호처리할 때, 부분영역내의 전체농도합을 구하고, 대상물의 적어도 일부분이 부분영역내에 존재할때의 전체농도합과 비교해서 대상물의 부분영역내에 있어서의 유무를 판별하고, 대상물을 인식하는 것을 특징으로 하는 인식방법과, 또 이를 실현하기 위하여, 대상물의 형상에 따라서 배치된 각각의 부분영역내의 농도데이터와 이 농도데이터의 계조수배된 부분영역번호를 가산해서 각 부분영역의 히스토그램을 구하는 수단과, 각 부분영역에 대상물의 적어도 일부분이 존재할때의 각각의 히스토그램과 비교해서 대상물의 유무를 각 부분영역마다 판별하는 수단과, 각 부분영역의 존재유무의 조합으로부터 대상물의 형상을 인식하는 수단을 구비한 것을 특징으로 하는 인식장치를 제공하는 것이다.
Patent KR-950013837-B1 (KR)
Title: Multiplexer and control method of the network ternunation method
Inventor: CHONG KYO-YONG
IPC: H04L12/12
Filed: 1991-07-08
Granted: 1995-11-16
Abstract: The multipoint scheme is adopted by the network terminal equipment to increase the efficiency of line occupation in S-interface. The multiplexor comprises S-interface units(4A) for connecting subscriber's terminal, S-transceivers and U-transceivers for communicating data between microprocessor unit through D-bus, a switching matrix(10) for switching data between S-transceivers and U-transceivers through B-bus, and a microprocessor unit(11) for transmitting data between S-transceivers and U-transceivers through C-bus and for controlling the switching matrix.