baber/WOPTO huggingface dataset:
Patent KR-870000463-B1 (KR)
Title: Process kit and the image apparatus of using it
Inventor: ONODA SHIGEYOSHI
IPC: G03G21/18
Filed: 1983-05-19
Granted: 1987-03-11
Abstract: The processing kit stably produces images of high quality economically and without being adversely affected by increased temp. The kit(30) is detachably mounted in the main body(18) of an image forming appts. It includes a housing (20,30a) in which a photosensitive drum(3), a corona discharger(4) and a developing compartment(5) are mounted and held as a unit. The housing includes an optical opening(35) formed upstream of the discharger(4) for conducting homogeneous light to the drum to eliminate any remaining charge on it. An opening (27) of exposure conducts information light to the drum.
Patent KR-920005672-B1 (KR)
Inventor: SHIPMAN GENE H
IPC: H01M50/491
Filed: 1983-09-09
Granted: 1992-07-13
Abstract: 내용 없음.
Patent KR-860001792-B1 (KR)
Title: A receiver
Inventor: ICHIGAWA YOSHO
IPC: H04W88/02
Filed: 1983-10-19
Granted: 1986-10-22
Abstract: The receiver comprises (a) a memory which can store a number of messages; (b) a display which has a number of display digits; (c) a counter which counts the number of the messages; (d) and a control section, including a microprocessor, which displays the receied message on the display. The control section displays the contents of the counter on the display and counts down the counter every time the received message is notified. If the receipt of the new message results in overflow of the memory, the reciever concurrently displays the earlier received message and displays the indication of memory overflow.
Patent KR-900000828-B1 (KR)
Title: Semiconductor device manufacturing method
Inventor: IKEDA DAKAHIDE
IPC: H01L27/06
Filed: 1984-03-19
Granted: 1990-02-17
Abstract: The semiconductor device with bipolar element and MOSFET transistors has buried layers (2,2',14) of one conductivity type formed within regions of the semiconductor substrate (1) in which the bipolar element is formed.  Another buried layer of the same coductivity and one MOS field effect transistor type is formed within the semiconductor substrate facing the emitter (12) of the bipolar element.  The depth from one surface of the semiconductor substrate to the other buried layer of the same conductivity type is less than the depth from that surface to the buried layer. This invention can prevent any increase in the capacity of the MOS field effect transistor and also improve the operating speed.
Patent KR-890001106-B1 (KR)
Title: High-speed silver plating
Inventor: OOKUBO TOSHIKAZU
IPC: C25D3/46
Filed: 1984-06-07
Granted: 1989-04-24
Abstract: A high-speed Ag electroplating solution for forming an Ag coating film on the surface of base metal such as Cu, a Cu alloy, Cu-coated steel, an Fe alloy, Ni or a Ni alloy contains a cyclic compound containing thioureilene gp. of formular (I) in its ring. The amount of cyclic compound to be added is adjusted to inhibit the substantial deposition of Ag.  In (I), R1 and R2 are each H or alkyl or aryl gp..  The compound may have a five or six-membered ring comprising C or N atom in addition to the thioureilene gp.. Typically it may be 2- thiobarbituric acid, 2-imidazoline thione, 1-phenyl-2-tetrazoline-5- thione or their derivs.
Patent KR-850000765-B1 (KR)
Title: Process for preparing thiazoline derivatives
Inventor: LANG HANS JOCHEN
IPC: C07D407/02
Filed: 1984-10-05
Granted: 1985-05-29
Abstract: Thiazolines I (R1 C1-8 alkyl, C3-8 cycloalkyl, C3-4 alkenyl; R2-R4 = H, halogen, alkyl, alkoxy, OCH2O OCH2CH2O, NMe2, NEt2, CF3; R5  = H, C1-3 alkyl; R6 = H, C1-6 alkyl; R7 = H, C1-12 alkyl, C3-12 cycloalkyl, allyl, CH2CH2Ph, CH2Ph; Y = H, halogen, C1-3 alkyl) were pred. 2-bromo-4'-chloro-3'-dimethylsulphamoyl- acetophenone in ethanol and 1-methyl-3-phenmyl-thiourea were heated for 1hr. and successively heated for 2-3 more hours at boiling point by treating AcOH. Thereafter, the solvent was removed under a vacumn pump and isopropylether was added to filtrate the 4-(4chloro-3-dimethyl sulphamoylphenyl)-3-methyl-2-phenylimino-4thiazolinehydrohromide.
Patent KR-900006306-B1 (KR)
Title: Erasable optical data storage medium and method and apparatus for recording data on the medium
Inventor: FEYRER CLYDE D
IPC: G11B7/24038
Filed: 1984-11-26
Granted: 1990-08-28
Abstract: The optical recording medium comprises 2 layers of material adjacent each other. The two layers cooperate as a medium for forming an optically detectable deformation by thermal expansion of the first material without liquefaction or gasification of the materials when the first layer is locally heated with light radiation of first preselected wavelength. The two materials are bonded to each other to enable the second layer to hold the first material in stretched, expanded condition upon cessation of the light radiation and cooling of the first material, retaining the optically detectable deformation. The second layer is sufficiently strong and rigid to hold the first material in stretched, expanded condition.
Patent KR-860001704-B1 (KR)
Title: Switching control circuit
Inventor: RYU KWANG-RYOL
IPC: H03K17/687
Filed: 1984-12-13
Granted: 1986-10-17
Abstract: A switching control circuit preventing a distortion effect caused by a leakage signal comprises a first switching means which switches the imput signal coming through a buffer amplifier(1), a second switching means which function is the reverse of the first switching means, a switching controller which controls the first and second switching means, and a buffer amplifier(1) which amplifies the control signal.
Patent KR-910004898-B1 (KR)
Inventor: BEZWADA RAO S
IPC: C08G18/00
Filed: 1984-12-21
Granted: 1991-07-15
Abstract: 내용 없음.
Patent KR-880000506-B1 (KR)
Title: A new conversion algorithm for real time secotr scaner
Inventor: PARK SONG-BAE
IPC: G06F7/00
Filed: 1985-03-08
Granted: 1988-04-08
Abstract: This invention relates to a supersonic sector scanner employing the uniform trapezoid scheme which performs a real time coordinate transformation.  Unlike the concentric square raster sampling (CSRS) which has a specific angle between supersonic scanning lines, this method adjusts the angle between adjacent supersonic scanning lines for the horizontal distance between each supersonic scanning lines to be equaled.  Therefore, the errors which take place in performing the real-time coordinate transformation can be eliminated almost completely.
Patent KR-910000185-B1 (KR)
Inventor: OKADA GENSUKE
IPC: B23P13/00
Filed: 1985-06-14
Granted: 1991-01-21
Abstract: 내용 없음.
Patent KR-880002263-B1 (KR)
Title: Manchester data decorder circuit of advanced mob mobile phone
Inventor: PANG SA-HYUN
IPC: H04L25/49
Filed: 1985-10-24
Granted: 1988-10-20
Abstract: This invention is a Manchester type decoder circuit for digital data communication in a movable wireless car phone.  The comparator digitalizes the received data with wide bandwidth and edge detection circuit (6) detects the digitalized wide band width data.  The synchronous detection circuit (9) generates a synchronous detection signal by applying reference time signals which are generated the edge detection circuit (6).  The clock regeneration circuit (8) generates interupt signals and regenerating signals.  The data detection circuit converts serial data into parallel data.
Patent KR-930003535-B1 (KR)
Inventor: CORONA ANTONIO
IPC: B25G1/08
Filed: 1985-12-04
Granted: 1993-05-03
Abstract: 내용 없음.
Patent KR-900008781-B1 (KR)
Inventor: NISHIMURA TSUTOMU
IPC: H05K1/09
Filed: 1986-06-13
Granted: 1990-11-29
Abstract: 내용 없음.
Patent KR-930009824-B1 (KR)
Inventor: OKURA TOMOYUKI
IPC: C07D405/12
Filed: 1986-07-29
Granted: 1993-10-11
Abstract: 내용 없음.
Patent KR-940010183-B1 (KR)
Inventor: HAYASHI HIDEKI
IPC: G11B15/087
Filed: 1986-10-04
Granted: 1994-10-22
Abstract: 내용 없음.
Patent KR-940002098-B1 (KR)
Inventor: OSHIMA HIDEKI
IPC: A61C1/02
Filed: 1987-01-31
Granted: 1994-03-17
Abstract: 내용 없음.
Patent KR-910001602-B1 (KR)
Inventor: CONNOLLY MARK S
IPC: C08G63/60
Filed: 1987-02-28
Granted: 1991-03-16
Abstract: 내용 없음.
Patent KR-930007254-B1 (KR)
Inventor: IZUMI MITSUO
IPC: B23Q3/155
Filed: 1987-03-23
Granted: 1993-08-04
Abstract: 내용 없음.
Patent KR-920010925-B1 (KR)
Inventor: WAKIHIRA KOICHIRO
IPC: B23F21/16
Filed: 1987-07-08
Granted: 1992-12-24
Abstract: 내용 없음.
Patent KR-900006714-B1 (KR)
Title: Polyphenylene ether composition
Inventor: SASAKI ISAO
IPC: C08L51/06
Filed: 1987-09-11
Granted: 1990-09-17
Abstract: Polyphenylene ether resin compsns. contain (A) polyphenylene ether resin, (B) polystyrene resin, (C) complex rubber graft copolymer which is polymerised with one or two more vinyl monomer to complex rubber. The complex rubber has the structure in which 10-90 wt.% of (a) polyorganosiloxane rubber component and 10-90 wt.% of (b) polyalkyl-(meta)acrylate rubber component get interwined with each other. And total amt. of (a) and (b) is 100 wt.%. The average grain dia. of the comple rubber is 0.08-0.6 microns. The compsns. has good fluidity and moulding property. And moulded matter has good external appearance and good in shock, thermal resistance and mechanical strength.
Patent KR-900006017-B1 (KR)
Title: Wafer carrier
Inventor: LEE SANG-WOO
IPC: B25J15/00
Filed: 1987-12-18
Granted: 1990-08-20
Abstract: The carrier enables conveying the center of wafer with 2-8 inch diameter to the reactor center without a wafer supporting, simultaneously conveying wafer from a reactor to a vacuum load system. The carrier using linear motion of arm (30) mounted on turn table (12), includes wafer setting pins (44) (441-446) attached to leaf springs (45)(451-455) at the front of the arm; arm slide (3), compressed spring (53), shock absorbing plate (32), arm slide stopping pin (52) at the rear of the arm.
Patent KR-950002975-B1 (KR)
Inventor: SAWA YUJI
IPC: B65B9/213
Filed: 1988-04-04
Granted: 1995-03-29
Abstract: 내용 없음.
Patent KR-950008402-B1 (KR)
Title: Memory having redundant storage space
Inventor: FRANS JACOB LIST
IPC: G11C29/00
Filed: 1988-05-07
Granted: 1995-07-28
Abstract: A memory is described which incorporates redundancy in the form of one or more redundant columns. An applied binary address is first distributed between predecoders which form a 1-out-of-2<n> code from n bits received. For each non-redundant column there is available a part of a main decoder, each part receiving a different combination of the bits supplied by the predecoders, thus selecting the column. For each redundant column there is provided a redundancy decoder. The latter decoder receives all bits supplied by the predecoders, each time via a series connection of a activatable gating element and a fuse element. Per predecoder the outputs of the series connections are combined in a wired logic function. Each wired logic function forms an input signal of the actual redundancy decoder. When a redundant column is to be addressed, all fuse elements but one of a group are opened and the gating elements are activated. A memory column to be replaced is then uncoupled by way of another fuse element.
Patent KR-100197776-B1 (KR)
Inventor: AKAGIRI KENZO
IPC: H03G7/00
Filed: 1988-06-27
Granted: 1999-06-15
Abstract: 본 발명은, 입력 신호의 진폭을 압축 또는 신장하는 진폭 압축 신장 회로에 있어서, 입력 신호에 응답하여 제어 신호를 발생하는 제어 신호 발생 수단과, 제어 신호 및 상기 입력 신호를 승산하여 승산된 출력 신호를 발생하는 신호 승산 수단과, 상기 승산된 출력 신호에서 상기 입력 신호를 감산하여 제1감산 출력 신호를 발생하는 제1감산 수단과, 상기 제1감산 출력 신호를 수신하여 상기 제1감산 출력 신호로부터 처리된 출력 신호를 발생하는 신호 처리 수단 및, 상기 승산된 출력 신호에서 상기 처리된 출력 신호를 감산하여 진폭 신장 또는 압축된 출력 신호를 발생하는 제2감산 수단이 제공된다.
Patent KR-940008813-B1 (KR)
Title: Apparatus for transmitting image data signal of cctv
Inventor: LEE YONG-SU
IPC: H04N7/18
Filed: 1988-06-30
Granted: 1994-09-26
Abstract: The apparatus for reducing the construction budget and increasing reliability divides a number of cameras into groups. Each group includes a DBM (Double Balanced Modulator) shifting the video signal to the certain frequency, an oscillator (OSC) modulating the shifted frequency into different career frequencies (f1-f16), a band pass filter (BPF) reproducing the image, a signal divider (32) synthesizing two signals into one coaxial cable (31), an amplifier (AMP), a tuner (33), and a monitor (34).
Patent KR-900008984-B1 (KR)
Inventor: KIM DO-HYUNG
IPC: C04B35/56
Filed: 1988-08-31
Granted: 1990-12-17
Abstract: 내용 없음.
Patent KR-960007965-B1 (KR)
Inventor: JENSEN FINN QUORDROP
IPC: F01L9/10
Filed: 1988-11-04
Granted: 1996-06-17
Abstract: 내용 없음.
Patent KR-970010051-B1 (KR)
Title: Pesticide composition
Inventor: PAP LASZLO
IPC: A01N57/16
Filed: 1988-11-17
Granted: 1997-06-20
Abstract: The present invention relates to a multi-component pesticidal composition against arthropoda containing as active ingredient pyrethroides and phosphate esters and optionally piperonyl butoxide and excipients comprising as pyrethroid component 0.1 to 40 percent by weight of cypermethrin related to the total weight comprising out of the 8 possible isomers 40 to 100 percent by weight of 1RcisS and/or 1RtransS stereoisomer and as a second component at least one phosphoric acid, thiophosphoric acid or dithiophosphate being toxic on arthropoda at a ratio of 1:1-99 related to the amount of cypermethrin.
Patent KR-970003340-B1 (KR)
Title: Ba-ferrite magnetic powder making method
Inventor: KIL BYUNG-RYONG
IPC: H01F1/10
Filed: 1988-12-31
Granted: 1997-03-17
Abstract: A method of fabricating magnetic powder is described that can pro duce the magnetic powder of Ba-Ferrite which has an equal magnetic characteristic and a shape control.  The method includes the steps of adding a desired quantity of PbO, an element for forming hybrid-Ferrite, to source material, firstly annealing an amorphous ribbon produced by the source material at a temperature of 450deg. C for 3 hours to 5 hours, secondly annealing the amorphous ribbon at a temperature of 600deg. C to 650deg. C for 6 hours and thirdly annealing the amorphous ribbon secondly annealed at a temperature of 750deg. C to 800deg. C for 5 hours.  Thereby, it is possible to produce the magnetic powder of Ba-Ferrite which has an equal magnetic characteristic and a shape control.
Patent KR-910005869-B1 (KR)
Title: Process for preparing photosensitive silver salt emulsions
Inventor: RYU YOUNG-KI
IPC: G03C1/005
Filed: 1989-01-27
Granted: 1991-08-06
Abstract: The photosensitive emulsifying particles of silver  salt  are formed by (1) adding with  agitation  ammonia  water-added  silver nitrate complex  solution  and  potassium  bromide  solution  into gelatine solution containing  0-10%  halogenated  metal  compounds within 3 mins., followed by further addition  of  above  solutions for 5 mins with agitation, (2) neutralizing the  reaction  mixture to 7-8 pH with sulfuric  acid,  nitric  acid  or  citric  acid  to suppress the activity of ammonia water, (3)  adding  again  silver nitrate solution and potassium bromide solution with agitation for 20-40 mins, and (4) aging the mixture for 10-20 mins, followed  by water- washing.
Patent KR-910008252-B1 (KR)
Title: Communication system for method of dual portram of elevator
Inventor: KANG MIN-KU
IPC: B66B1/00
Filed: 1989-03-17
Granted: 1991-10-12
Abstract: The system interrupts the one processor out of the master and slave processors during each constant peroid to read large  amount of data at once, when the data amounts for communication is large. The system also communicates automatically to  save  the  data  in case of the power failure.  The  system  program  is  also  simple because it does not need to indentify the flag indicating the data supplying state of the counter part processor.
Patent KR-920002927-B1 (KR)
Title: Portable laser scanner head frames optical system
Inventor: CHUNG JAE-YONG
IPC: G06K7/10
Filed: 1989-07-13
Granted: 1992-04-10
Abstract: The  optical  system  includes  a  plane  mirror  (21)   for reflecting laser beam generated by a laser generator  (1)  to  bar code surface, a Fresnel lenz (23) deposited on the  back  side  of the plane mirror to condense the laser beam reflected by  the  bar code surface, and a photo detector (3) deposited on the back  side of the Fresnel lenz (23) to detect the condensed laser  beam.  The condensing lenz is made of  acrylic  plastic  and  the  reflecting mirror is formed by coating the surface of the condensing lenz  so that the scanning and condensing unit becomes smaller and lighter.
Patent KR-0139211-B1 (KR)
Inventor: KUROKI AKIRA
IPC: C02F1/40
Filed: 1989-08-11
Granted: 1998-04-30
Abstract: 내용 없음
Patent KR-910008963-B1 (KR)
Title: Non-skid device of shoes
Inventor: JIN JONG-HO
IPC: A43C15/02
Filed: 1989-10-10
Granted: 1991-10-26
Abstract: The device having an antislip pivot plate with  a  number  of conical projections on the shoe sole, prevents slipping  of  shoes on icy or snowy roads in winter. The device includes a  supporting member  (4) having  support  step  (4a),  joining  groove   (11), projection inserting  section  (4b),  end  step  (4c)  and  being attached on sole (2) of shoes (1) by  the  adhesive;  an  antislip plate (3) having the arranged projections (3a) and pivoting on the member (4); pin (9) for connecting a hole (7)  of  the  plate  (3) with a hole (7') of the support body (5); pivot hole (10)  of  the member (4) having the inserted body (5) and  fastened  by  E  ring (8); bulged section (3b) and trapping section (6) of the plate (3) locked and released by the opposite groove (6') of the member (4).
Patent KR-920005859-B1 (KR)
Inventor: YAMADA KIYOMI
IPC: D06F43/08
Filed: 1989-10-31
Granted: 1992-07-23
Abstract: 내용 없음.
Patent KR-920002329-B1 (KR)
Inventor: MORITA TAKAKAZU
IPC: A61K31/495
Filed: 1988-12-23
Granted: 1992-03-21
Abstract: 내용 없음.
Patent KR-970001847-B1 (KR)
Inventor: PAUL GOGNIAT
IPC: G04B37/08
Filed: 1990-02-14
Granted: 1997-02-17
Abstract: 내용 없음.
Patent KR-940008632-B1 (KR)
Inventor: KOBAYASHI MASAHIKO
IPC: E02F3/32
Filed: 1990-02-16
Granted: 1994-09-24
Abstract: 내용 없음.
Patent KR-100189397-B1 (KR)
Title: Friction thread feed device
Inventor: SARFATI ALBERTO GUSTAVO
IPC: B65H59/18
Filed: 1990-03-10
Granted: 1999-06-01
Abstract: Device with at least two drums (5, 6) which are arranged at a distance from one another and are partially looped around by the yarn (F) and which are driven in the direction of run of the yarn (F) at a circumferential speed considerably higher than the yarn draw-off speed. To prevent the yarn layers from overlapping one another in the event of multiple loopings on the drums, even where heavy yarns are concerned, in the spacing region of the drums (5, 6) are fastened intermediate walls (17, 18) subdividing the drum outer surfaces into individual regions axially offset relative to one another. 
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Patent KR-0135072-B1 (KR)
Inventor: GERARD LE DEIT
IPC: F16D55/32
Filed: 1990-04-21
Granted: 1998-04-23
Abstract: 요약없음
Patent KR-920010945-B1 (KR)
Title: Method of manufacturing for screen filter
Inventor: NO MU-HAK
IPC: G02B5/20
Filed: 1990-05-17
Granted: 1992-12-24
Abstract: The producing process of screen filter fabric  comprises  (1) weaving, at a density of 150-200 yarns/inch,  using  10-30  denier nylon or polyester monofilaments, (2) depositing with copper  (Cu) to 0.3-3  m thickness under below 10-6 Torr,  and  (3)  coating  a water  soluble  electrodeposition  coating   solution   onto   the deposited fabric surface. The  coating  solution  is  composed  of binder, carbon black, organic solvent, formic acid as an  additive and  water.  The  farbric  is  effective  for  electromagnetic  or electrostatic shielding.
Patent KR-920010964-B1 (KR)
Title: Image frame grabber
Inventor: KIM DAE-NYON
IPC: G06F12/06
Filed: 1990-11-07
Granted: 1992-12-26
Abstract: The circuit grabs video image wihout  delay  of  access  time that results from bus allocating detection  and  two  port  memory access by using dual-port video RAM.  The  circuit  includes  four banks of dual-port video RAM (2), an input buffer 8 bit latch  (1) composed of D1,D2,D3 and D4, an output buffer latch  (3)  composed of A1,A2,A3 and A4, and a serial data lach (S1)  for  reading  and supplying the 8 bit data stored in a serial outputting register to a D/A converter, sequentially.
Patent KR-940004669-B1 (KR)
Title: Ceramic moisture sensor and manufacturing method thereof
Inventor: SHIM YONG-JO
IPC: G01N27/12
Filed: 1990-12-28
Granted: 1994-05-27
Abstract: The ceramic humidity sensor manufacturing method comprises the steps of: first calcinating dried powder for one hour at 1,000 deg.C to form a spinel structure; adding K2O of 1-40 weight% in the form of K2CO3 into the calcinated powder; and secondarily calcinating the mixture for one hour at 900 deg.C, thereby increasing conductibility.
Patent KR-100188308-B1 (KR)
Inventor: NAKAMURA KENTARO
IPC: E02F3/43
Filed: 1990-05-26
Granted: 1999-06-01
Abstract: 본 발명은 수동 조작장치에 의하여 유압액추에이터를 조작하는 경우에 밸브컨트롤러에서 조작신호 경로 중에, 수동조작장치에 의한 경우와 마찬가지 조작을 유압액추에이터에 대하여 출력하도록 하여 유압액추에이터의 반복작업을 자동적으로 실시하도록 한 것이다. 
     더욱이, 유압액추에이터에 대한 진동구동을 상기한 수동조작장치에 의한 조작에 가산하여 출력하고 작업자에 의한 인위적 조작으로는 정확하게 이루어질 수 없는 조작을 실현시키는 것이다. 
     또, 반복조작을 연속하여 실시하는 경우에, 수동조작장치에 의한 보정조작을 가미하고, 일정량씩 변화시킬 때의 수정조작을 간편하게 한 것으로서, 건설기계의 굴삭처리를 일정량씩 깊게 하도록 한 경우에 적용할 수 있는 것으로 하였다.
Patent KR-920001469-B1 (KR)
Inventor: KISIMOTO DAKASI
IPC: C07D401/12
Filed: 1989-10-26
Granted: 1992-02-14
Abstract: 내용 없음.
Patent KR-0139107-B1 (KR)
Title: A moderated spun fibrous system and method of manufacture
Inventor: FUISZ RICHARD C
IPC: A61K9/70
Filed: 1990-02-22
Granted: 1998-05-15
Abstract: A spun product from a combination of a saccharide and a hydrophobic ingredient is hydrophilic with low concentrations of such ingredient but becomes increasingly hydrophobic as the concentration of the hydrophobic ingredient is increased, although the end product nevertheless acts hydrophilically when the water temperature is elevated. Larger ratios of hydrophobic substance-to-saccharide yields a spun fibrous product that has increased stability. Similar stabilization can be attained by adding either beeswax or a petrolatum to the saccharide either in the presence of or absence of a separate active ingredient. Examples are given for masking the taste of unpalatable medicaments or other ingestible substances. Delayed release burn or wound dressings are also described. Control with beeswax can also provide a time release tablet or the like when swallowed.
Patent KR-940005699-B1 (KR)
Title: Semiconducter memory device with redundancy circuit
Inventor: YUN DO-SOP
IPC: G11C29/00
Filed: 1991-01-15
Granted: 1994-06-22
Abstract: The semiconductor memory device wth a redundancy circuit includes a cell selector for supplying a test signal and a pad signal to a main cell through a NAND gate and a first inverter, and to a row decoder through the NAND gate, the first inverter and a second inverter, thereby reducing testing time of the memory device.
Patent KR-930009593-B1 (KR)
Title: Lsi semiconductor memory device and manufacturing method thereof
Inventor: AN JI-HONG
IPC: H01L21/8242
Filed: 1991-01-30
Granted: 1993-10-07
Abstract: The device comprises a syndrome  calculator  for  calculating syndromes from n received words, a  first  coefficient  calculator for calculating first coefficients (sigma 1,  sigma  2)  from  the syndromes, a  second  coefficient  calculator  for  calculating  a second coefficient from the first coefficients, an error  location value calculator for calculating an error location value from  the second  coefficient,  an  error  location  value  calculator   for calculating actual error locations from the error location  value. An error value  calculator  receives  the  actual  error  location values and calculating error values  and  an  error  discriminator determines  how  many  errors  occur.  The  error  location  value calculator is constituted by logic gates which receive the  second coefficient and then output the error location value.