baber/WOPTO huggingface dataset:
Patent KR-860001634-B1 (KR)
Title: Wet-dry vacuum cleaner
Inventor: LEVINE MORRIS M
IPC: A47L7/00
Filed: 1984-07-21
Granted: 1986-10-15
Abstract: The vacuum cleaner for use with both dry and wet operation is formed of a housing which encloses a blower and a motor for driving the blower. The cleaner includes a canister having a nozzle and a storage chamber beneath the nozzle. The canister is removably securable to the front end of the housing. An intake port for air under suction is provided at the front end of the housing, the port having a liquid- deflecting hood extending from an upper portion into the chamber for deflecting any liq. exiting from a posterior port of the nozzle into the chamber. This vacuum cleaner can also draw out upholstery or carpet cleaning fluids.
Patent KR-870000678-B1 (KR)
Title: Negative photoresist system
Inventor: KALYANARMAN PALAIYUR S
IPC: G03F7/008
Filed: 1985-01-14
Granted: 1987-04-06
Abstract: A negative photoresist comprises a solvent soln. contg. 1) polyglutarinide and 2) a negative acting photosensitiser; 5 wt.% of 1) being units of formula(1), R1,R2 and R3 each=H, or opt. substd. C1-20  alkyl, aryl, aralkyl or alkaryl or mixts. thereof. If the polyglutarimide is completely functionalised by reacting the R3 hydrogen substd. with an alkenyl halide or alkenyl aromatic halide so that less than 20mol% R3 ydrogen rubstd. remaining in the photosensitiser may be emitted. The resist is used in semiconductor and integrated circuit process. It may be sensitised to near, mid or deep UV.
Patent KR-890003560-B1 (KR)
Title: Magnetic disk driving apparatus
Inventor: SAKAI YOSHIAKI
IPC: G11B17/32
Filed: 1985-01-16
Granted: 1989-09-23
Abstract: The position-relation between a magnetic disk and a magnetic head, is easily controlled.  A disk rotation device which rotates a magnetic disk (2) of a disk cartridge, consists of an outerrotor type motor (3) and a disk absorbing rotation assembly (5). A pair of magnetic heads (6,7) is moved by a head movement device to truck intersection direction.  A guide bar (9) guides a head carriage (8) to disk radius direction.  The height of a rotation body (5) is controlled by the rotation of a screw (19) which connects a rotor (16) and spindle (4).
Patent KR-900006265-B1 (KR)
Title: Magnetic recording and play back device of teletext
Inventor: HONZYO MASAHIRO
IPC: H04N9/82
Filed: 1985-04-12
Granted: 1990-08-27
Abstract: The apparatus includes, filters (2) having a widerpass band width than the luminance signal processing system filters. Narrow band filter(S) (3) are provided having a narrower pass band width than chrominance signal processing system filter(s). A filter selection system (4,17) changes the luminance signal processing system to the wide band filter, and changes the chrominance signal processing system to the narrow band filter, in response to a control signal. A control system (18) generates the control singal in a specified duration when the imformation siganl is superposed on the video signal, and operates the filter selection system.
Patent KR-900002319-B1 (KR)
Title: Method and control system for verifying sensor operation in a refrigeration system
Inventor: MOUNT GORDON L
IPC: F25B49/02
Filed: 1985-05-14
Granted: 1990-04-11
Abstract: The safety control apparatus is for an electrically-driven refrigerating compressor and has a sensor indicating the operating condition of the refrigerating system to a processor.  The signals from the sensor fall in a certain operating range when operating normally and before starting up of the compressor.  On a fault in the sensor, the processor emits an alarm signal to a safety device when it records the sensor signal, before starting the compressor.
Patent KR-870001724-B1 (KR)
Title: Process for the continuous preparation of homogeneous solutions of high molecular polymers
Inventor: RUMSTRA PEATER J
IPC: D01D1/09
Filed: 1985-09-28
Granted: 1987-09-25
Abstract: High stretchable gel articles of high mol. polymers are prepd. by feeding a finely divided polymer, in a solvent for the polymer, in ratio by wt. of 1:1-100, to 1 end of an elongated kneader with at least 1 rotatable screw.  The suspension is mixed and kneaded at a high mechanical shear rate, for 0.5-30mins. at high feed rate, and at increased temp.  The mixt. obtd. is withdrawn through an opening at the other end of the kneader, into a gaseous or Liq. coolant, or onto a solid cooling surface, to form the gel article.  Mixing and kneading are at a temp. between the b. pt. of the solvent at the pressure in the appts. and the temp. of soln..
Patent KR-930007090-B1 (KR)
Inventor: HEYNE CARL J
IPC: H01H77/10
Filed: 1985-11-13
Granted: 1993-07-29
Abstract: 내용 없음.
Patent KR-910004930-B1 (KR)
Inventor: KOKUBUN YOSHIKAZU
IPC: G07F11/00
Filed: 1985-12-28
Granted: 1991-07-18
Abstract: 내용 없음.
Patent KR-900002498-B1 (KR)
Title: Self-orienting conduit probe
Inventor: EDWARDS LAWRENCE J
IPC: G01N29/265
Filed: 1986-05-09
Granted: 1990-04-16
Abstract: A probe (10) for an internal examination of a tube, esp. of a curved tube (28) comprises a carrier (12) including at least a part rotatable in the tube with respect to the longitudinal axis of the tube, a means for transporting the carrier through the tube, and an elastic flat strip (20) fixed to the rotating part of the carrier with a rotatable coupling (13).  The flat strip has substantially different values of bending monent with respect to the first transversal axis (24) and the second transversal axis (26).  A detecting means (126) of an eddy current type is equipped with the rotating part of the carrier.
Patent KR-900006046-B1 (KR)
Title: An overcurrent protective circuit for modulated-conductivity type mosfet
Inventor: OKATO CHIHIRO
IPC: H03K17/567
Filed: 1986-05-15
Granted: 1990-08-20
Abstract: An overcurrent protection circuit for a BIFET (1) comprises a first voltage detection means for detecting the voltage between the drain and source of the BIFET and a main switcing means which is arranged to lower the voltage between the gate and source of the BIFET to prevent the failure of turn-on of the BIFET in response to the output of the first voltage detection means, the main switching means comprises a delay circuit means connected to the output terminal of the circuit (50) for inhibiting the main switching means from lowering said voltage between the gate and source of the BIFET until after turn-on of the BIFET (1) upon application of a turn-on signal to the output terminal of circuit (50).
Patent KR-900004756-B1 (KR)
Title: Information@ recording carrier
Inventor: MOZITSUKI HIDEAKI
IPC: G11B7/243
Filed: 1986-07-03
Granted: 1990-07-05
Abstract: Signal recording disk comprises a recording layer (I) contg. metal formed on a substrate and an adhesive resin compsn. layer (II) formed on (I). (II) contains acrylic monomer, radical former, an epoxy gp.- contg. cpd. such that the epoxy value in the layer is at least 0.005. (II) prevents the metal in (I) oxidising in a high temp. high humidity atmos. Pref. the radical former in the (II) compsn. is decomposable by UV radiation to form radical species, thus enabling the resin to be cured. (I) may be a thin film of Te suboxide or Al.
Patent KR-900002116-B1 (KR)
Inventor: SHIFRIN GORDON A
IPC: G01S3/784
Filed: 1986-04-01
Granted: 1990-04-02
Abstract: 내용 없음.
Patent KR-910009789-B1 (KR)
Inventor: STEELY LEE W
IPC: G06F13/00
Filed: 1987-03-09
Granted: 1991-11-30
Abstract: 내용 없음.
Patent KR-890005248-B1 (KR)
Inventor: LEE CHOL-HO
IPC: A23L7/10
Filed: 1987-03-11
Granted: 1989-12-20
Abstract: 내용 없음.
Patent KR-960005842-B1 (KR)
Inventor: FURAN BUKE
IPC: B60T13/57
Filed: 1987-04-23
Granted: 1996-05-03
Abstract: 내용 없음.
Patent KR-900004048-B1 (KR)
Title: Bill counter
Inventor: HAN YUN-SUP
IPC: G06M7/06
Filed: 1987-05-08
Granted: 1990-06-09
Abstract: The counter includes an auto starter (1) for detecting bill in a bill loader and for generating detecting signal, a break, clutch, and motor driver (3,4,5) for controlling motor (M), clutch (CL), and break (BK) with certain intervals according to the detecting signal, a counter (11) for counting number of bill passing through a first and a second passage detector (6,7), a display (27) for displaying counted value and false operation, a detector (13) for stopping motor when counted value reaches a set value, a two fold detector (14) for detecting two fold a jam detector (15) for detecting bill jam, and an error classifir (21) for classifying and displaying error.
Patent KR-970005084-B1 (KR)
Inventor: KIRSCHNER JOHN G
IPC: H01C13/02
Filed: 1987-05-16
Granted: 1997-04-12
Abstract: 내용 없음.
Patent KR-950014460-B1 (KR)
Title: Process of controlling the empimeric distribution in the preparation of 16,17-acetals or ketals of pregnane derivatives
Inventor: EDIB JAKUPOVIC
IPC: C07J71/00
Filed: 1987-09-24
Granted: 1995-11-28
Abstract: A method of controlling the epimeric distribution in the preparation of 16,17-acetals of pregnane derivatives characterized in reaction of a corresponding 16,17-acetonide with an aldehyde or ketone in a) hydrocarbon solvent wherein the solubility of the pregnane derivative is less than 1 mg/l or in a halogenated hydrocarbon solvent together with a hydrohalogen acid or an organic sulphonic acid as catalyst and in the presence of small grains of an inert material in the reaction medium or b) a halogenated hydrocarbon solvent together with a hydrohalogen acid an organic sulphonic acid as catalyst and in the presence of an epimeric distribution modifier.
Patent KR-900001351-B1 (KR)
Title: Producing method of spun-like yarn
Inventor: KIM JONG-BAE
IPC: D02G1/00
Filed: 1987-09-29
Granted: 1990-03-08
Abstract: In the method, melt-spun thermoplastic synthetic filaments pass through an air jet unit (2) to be subject to air jets released at 3- 10kg/cm2 in the direction of drawing the element, proceed through between two electrostatic units (3) to bring further fabrillation, pass through hot air jet stream released at 8-10kg/cm2 and 150-250 deg. C at the hot air jet unit (4) to produce loops and crimps, which are cooled in contact with the outer surface of a cooling drum to be spun into yarn.  Pref. the stretchability of the filament is 5±3 denier and the drawing speed being 800-4000m/min.
Patent KR-910009180-B1 (KR)
Title: Burning method of ceramic plate
Inventor: CHUNG TAE-YOUNG
IPC: C04B33/32
Filed: 1987-10-05
Granted: 1991-11-04
Abstract: A ceramic plate is fired by setting the right-angled  support at an angle of 45 degrees, piling  up  the  green  plates  on  it, spreading a little high purity and surface roughness of alumina or molibdenum powder between the support and the green plate and  the green plates, cross-folding  the  prominence  and  the  depression press-plates on it, and heating them. The  produced  plate  has  a little distortion or twist because of no difference of  the  width and the thickness contraction rate.
Patent KR-930009085-B1 (KR)
Inventor: KOBAYASHI YOICHI
IPC: C12P19/00
Filed: 1987-10-05
Granted: 1993-09-22
Abstract: 내용 없음.
Patent KR-950003730-B1 (KR)
Inventor: MACALUSO HOWARD C
IPC: F01N1/08
Filed: 1987-12-03
Granted: 1995-04-18
Abstract: 내용 없음.
Patent KR-900002896-B1 (KR)
Title: Magnetron
Inventor: PARK CHUL-SOO
IPC: H01J23/15
Filed: 1987-12-30
Granted: 1990-05-03
Abstract: The magnetron for reducing the leakage of higher harmonics includes a shield plate (13) with a certain thickness disposed between a filter case (11) and a filter cover (12), and a rectangular rim (13b) disposed on an outer lower wall of the filter case.  The height (h1) of the rectangular rim (13b) is above the half of the height (h2) of the rim (12a) of the filter cover (12).
Patent KR-960005920-B1 (KR)
Inventor: TAMURA MITSUHIKO
IPC: C08K9/06
Filed: 1988-04-08
Granted: 1996-05-03
Abstract: 내용 없음.
Patent KR-930009166-B1 (KR)
Title: Both direction printing method in graphic mode
Inventor: JONG YONG-KYU
IPC: G06K15/12
Filed: 1988-06-30
Granted: 1993-09-23
Abstract: The method improves the printing speed of dot matrix printer, specially by  the  bidirection  printing  in  graphic  mode.  This comprises a present carriage location memory  (3)  memorizing  the location of carriage and the print direction flag (2),  a  flatten drive (4) and a head drive (5) for line  feed,  a  carriage  drive (6), a carriage shift sensor (5),  a  V-RAM  control  pointer  (8) directing the memory location for printing, a V-RAM (9)  for  data recording on print location, and a memory (10) for memorizing data to print.
Patent KR-910009019-B1 (KR)
Title: Process for the preparation of polyisocyanurate-poline editing circuit in a character display systemlyisocyanates by catalytic cyclotrimerization of polyisocyanates
Inventor: CHUNG JAE-HON
IPC: C07D251/34
Filed: 1988-09-29
Granted: 1991-10-28
Abstract: The circuit for processing  the  Hangul  or  Chinese  in  the personal computer connects the semi-graphic automatically at space between line and line, but leaves the space for other  characters. The circuit incleases the scanning count which is greater than the character  size  so  that  the  identification  of  the  displayed character becomes easier because the line gap is enlarged.
Patent KR-940007286-B1 (KR)
Title: Optical-magnetic medium
Inventor: AN DONG-HUN
IPC: G11B13/04
Filed: 1988-09-30
Granted: 1994-08-12
Abstract: The optical magnetic medium has a protective layer made of Al-Si-Ti-N to improve reliability. The content of Al, Si, Ti and N is 8-12 %, 36-58 %, 4-8 % and 25-48 % respectively. The protective layer is formed by co-sputtering 4N and Ti and DC magnetron-sputtering Al-Si, and the thickness of the protective layer is adjusted by voltage level applied to a cathode.
Patent KR-970004619-B1 (KR)
Inventor: SHIBATA KENICHI
IPC: H03H9/02
Filed: 1988-10-18
Granted: 1997-03-29
Abstract: 요약 없음
Patent KR-0124511-B1 (KR)
Inventor: JONATHAN KIRSCHNER
IPC: B67D1/00
Filed: 1988-12-23
Granted: 1997-12-04
Abstract: 내용 없음
Patent KR-920006211-B1 (KR)
Title: Blocked isocianate graft high molecala and its manufacturing method
Inventor: CHON YUN-SU
IPC: C08G18/00
Filed: 1988-12-30
Granted: 1992-08-01
Abstract: The polymer grafted with a blocked isocyanate of  formula  of (I) is new. In (I), A is mixed polymer with  C1-18  alkylester  of hydroxy- substituted α,β-ethylene unsaturated carboxilic  acid  and α,β-
Patent KR-920009491-B1 (KR)
Title: Manufacturing method of micro-capsule for recording paper
Inventor: HO YONG-JAE
IPC: B41M5/28
Filed: 1988-12-30
Granted: 1992-10-17
Abstract: Microcopsules   are   produced   by   (1)   precondensating melamine-urea- formaldehyde in an alkali solution, (2) emulsifying a core material of a hydrophobic dye solution using an  emulsifier solution  composed  of  (a)  alkali  metal  salt-   and   ammonium salt-substituted styrene-maleic acid anhydride copolymer  and  (b) NOPCO 1470-K, (3) forming a microcapsule  walls  by  reacting  the precondensates with the emulsified solution in pH 5.5-6.5 at 60-70 deg.C and (4) stabilizing  the  encapsuled  liquid  using  aqueous ammonium and sodium hydroxide solution. The microcapsules are used for a pressure sensitive recording paper.
Patent KR-910003896-B1 (KR)
Inventor: KIM WHA-JUNG
IPC: B21K1/00
Filed: 1988-12-30
Granted: 1991-06-15
Abstract: 내용 없음.
Patent KR-930011046-B1 (KR)
Inventor: FUJITA HIROKATSU
IPC: F02M51/00
Filed: 1989-01-27
Granted: 1993-11-20
Abstract: 내용 없음.
Patent KR-930000132-B1 (KR)
Inventor: KOMURASAKI SATOSHI
IPC: G01L23/22
Filed: 1989-04-12
Granted: 1993-01-09
Abstract: 내용 없음.
Patent KR-940001587-B1 (KR)
Inventor: TANAKA SANTOMU
IPC: F25D23/00
Filed: 1989-06-14
Granted: 1994-02-25
Abstract: 내용 없음.
Patent KR-0138266-B1 (KR)
Inventor: TAL RONY
IPC: H04L7/04
Filed: 1989-06-16
Granted: 1998-06-15
Abstract: 내용없음
Patent KR-920004863-B1 (KR)
Inventor: KIMURA KOICHI
IPC: B41J2/275
Filed: 1989-07-21
Granted: 1992-06-19
Abstract: 내용 없음.
Patent KR-0124507-B1 (KR)
Title: Method and system for transfering calibration data between calibrated measurement instruments
Inventor: ALI REGIMAND
IPC: G01N23/09
Filed: 1989-07-29
Granted: 1997-11-28
Abstract: The present invention provides a method and system which is useful on instruments requiring experimentally determined calibration curves by which calibration data can be transferred to a plurality of field gauges, thereby avoiding the necessity of individually calibrating each gauge each time calibration is necessary.
Patent KR-910008253-B1 (KR)
Title: Reversion device of elevator base floor
Inventor: KANG HYO-DONG
IPC: B66B1/46
Filed: 1989-07-31
Granted: 1991-10-12
Abstract: The circuit drives the elevator to the  reference  floor  for the moment and to the requesting floor so that the power is saved. The circuit comprises a CPU (11) processing the outer data signal, a tranceiver transmitting the signal through the I/O port and  bus of the CPU, a decoder generating  the  signal  selecting  the  I/O port, an interrupt controller controlling the interrupt signal,  a timer providing  the  signal  periodically   to   the   interrupt controller, an input port converting the  input  signal  of  outer control switch to the signal with  TTL  voltage  level,  a  buffer transfering the input signal to the data bus, and an  output  port driving the up/down relay with the input signal.
Patent KR-920004124-B1 (KR)
Title: Interleave relation detecting circuit of composite picture image signal
Inventor: PARK YOUNG-JOON
IPC: H04N9/45
Filed: 1989-10-05
Granted: 1992-05-25
Abstract: The circuit is  for  detecting  interleave  relation  between horizontal synchrounous signal and color  subcarrier  signal.  The circuit includes an 1H delay circuit (16) for delaying  continuous burst signal by one H, an adder (18)  for  adding  the  continuous burst signal and the 1H delayed  signal,  a  multiplier  (20)  for multiplying the output signal of the adder  by  itself,  a  filter (22) for filtering the output signal of  the  multiplier  using  a lowpass filter; and a comparator (24)  for  comparing  the  output signal of the filter to reference voltage.  The  phase  difference between the burst signal and delayed signal is  divided  into  two parts: above the allowed range and below the limit.
Patent KR-920004219-B1 (KR)
Title: Tracking device for vcr
Inventor: LEE HONG-SUK
IPC: G11B5/584
Filed: 1989-10-31
Granted: 1992-05-30
Abstract: The  amount  of  tracking  is  adjusted  by  using  a  remote controller. The apparatus includes a controller  (3)  for  varying the pulse period of a light receiving unit  (2)  by  dividing  the frequency of switching signal, a preset pulse  generator  (4)  for generating  tracking  control  signal  according  to  the   remote tracking signal, and for generating the  preset  pulse,  a  preset circuit (5) for outputting the preset value according  the  output signals of the preset pulse generator and the  controller  (3),  a controller (7) for  generating  and  transmitting  control  signal using reference signal (REF30),  a  counter  (6)  for  countig  by driving flip-flops (FF15-FF20), a preset circuit (9)  for  setting the preset value by driving flip-flops (FF21-FF26),  a  controller (10) for generating tracking control signal (1),  and  a  tracking circuit (11) for adjusting the position of the head  according  to the tracking control signals.
Patent KR-970002738-B1 (KR)
Inventor: SIWIAK KAZIMIERZ
IPC: H04B7/26
Filed: 1988-12-07
Granted: 1997-03-08
Abstract: 내용없음.
Patent KR-930008351-B1 (KR)
Inventor: SUTO MASATSUNE
IPC: F04D17/08
Filed: 1990-02-05
Granted: 1993-08-30
Abstract: 내용 없음.
Patent KR-940006265-B1 (KR)
Inventor: ITOH MASASHI
IPC: H04H40/45
Filed: 1990-03-22
Granted: 1994-07-13
Abstract: 내용 없음.
Patent KR-930003404-B1 (KR)
Inventor: SATO MINORU
IPC: G06F17/30
Filed: 1990-05-31
Granted: 1993-04-26
Abstract: 내용 없음.
Patent KR-0173113-B1 (KR)
Inventor: SUZUKI HIROSHI
IPC: G04C9/00
Filed: 1990-06-19
Granted: 1999-03-30
Abstract: 스텝 모터, 일군의 기어 트레인, 표시 기능을 조정하는 도전 부재로 구성된 스위치 부재, 전극 패턴 및 다른 전기 부재를 가지는 집적 회로가 제공된 회로 블록을 포함하는 전자 시계로 표시 기능을 조정하는 도전재로 구성된 스위치 부재는 다수의 전극 패턴과 접촉하고, 상기 스위치부재의 스위치부가 다수의 전극 패턴에 대응하도록 다수의 스프링 형상을 가지고, 상기 스프링 형상의 굽힘량의 다르게 되어 있어 상기 전극 패턴에 차례로 접촉하며, 그 접촉에 의해 다수의 패턴이 상기 스위치 부재를 통하여 도전되고, 그후 신호가 집적 회로에 입력된다.
Patent KR-0149027-B1 (KR)
Title: Isocyanate reactive compositions
Inventor: BRUYNINCKX ALFONS
IPC: C08G18/40
Filed: 1990-06-21
Granted: 1998-10-15
Abstract: An isocyanate-reactive composition comprising :   (1) a first isocyanate-reactive compound having a functionality of from 2 to about 4 and an average equivalent weight of from about 750 to about 3000. (2) a second isocyanate-reactive compound which is normally immiscible with the first isocyanate-reactive compound and has a functionality of at least 2 and an average equivalent weight of at least 30, and (3) a miscibilising amount of dispersed polyurethane and/or polyurea particles. n
Patent KR-930004917-B1 (KR)
Title: Method for storing a testing program for switching centre
Inventor: YU CHAN-HYONG
IPC: H04M3/22
Filed: 1990-10-25
Granted: 1993-06-10
Abstract: The method providing the adaptability when  the  program  for hardware testing of  TDX  is  debugged  or  framed  comprises  the following steps of: processing the command which drives the system loading software (4) by analyzing the command  inputted  from  the tester; transmitting the program loaded using the file  system  to the target processor (2); executing the transmitted  program.  The system loading  software  (4)  includes:  a  system  loading  main routine (6); a monitor transmitting  routine  (7:MTR);  a  testing program  transmitting   routine   (8:TTR);   a   testing   program re-transmitting routine (9:TRTR).
Patent KR-0185700-B1 (KR)
Inventor: JERG HELMUT
IPC: G05D9/12
Filed: 1990-12-12
Granted: 1999-04-15
Abstract: 용기로의 유체 유입 제어장치. 
     용기(10)로의 유체 유입을 제어하는 장치로서, 용기(10)에는 충전수준(2)을 한정하는 일수연단(11)이 제공되어 있고, 일수연단이 일수관(12)에 통하여 있고, 이러한 일수관에는 일수관(12)의 외측에 배치되어 있는 스위치(4)에 작용하는 막(20)이 배치되어 있고, 제어임펄스에 의하여 개방되고, 스위치(4)의 제어임펄스에 의하여 폐쇄될 수 있는 유입밸브(1)가 달려있고, 일수관(12)이 항시 비어있고, 유동방향(3)으로 일수연단(11)으로부터 일정한 간격(A)을 두고 부착되어 있는 막(20) 다음에, 유동저항기가 배치되어 있는 장치.
Patent KR-0175663-B1 (KR)
Title: Block-cipher cryptographic device based on a pseudorandom nonlinear sequence generator
Inventor: MORONEY PAUL
IPC: H04L9/08
Filed: 1991-02-20
Granted: 1999-05-15
Abstract: A block-cipher cryptographic device that processes plaintext/encrypted input data with a key signal to provide encrypted/decrypted output data. Such device includes a shift register (10) for receiving input data (13); and data processing means (12), including a pseudorandom nonlinear sequence generator (32), for executing the following data processing routine a selected number of cycles to provide output data (15): processing (18, 22, 30) the contents (16) of said shift register with a key signal (14) to provide initially processed data (28); initializing the pseudorandom nonlinear sequence generator with the initially processed data; running the pseudorandom nonlinear sequence generator to generate a keystream (34); segregating (36, 38) portions of the keystream; processing (44) said segregated portions of said keystream with a portion of the data in the shift register to provide a block of processed data; and shifting said block of processed data into the shift register. To further increase the randomness of the pseudorandom keystream generator, and hence the encryption security, the data processing routine segregates the keystream in accordance with a routine (36) wherein the beginning of said segregated portion is provided at a time related to the beginning of the keystream in response to a duration indication (Y); segregates (38) every nth bit of the keystream from said beginning of said segregated portion for a selected number of segregated bits in response to a frequency indication (n); and provides said initially processed data by first processing (18) said shift register contents and said key signal and then rotating (22) data produced by said first processing in response to a rotation indication (X). The duration indication, the frequency indication and the rotation indication are each separately provided for each of the cycles and may be different for each of the cycles. <IMAGE>   <IMAGE>
Patent KR-950004197-B1 (KR)
Inventor: PANKRATZ RICHARD P
IPC: G03C1/805
Filed: 1991-03-12
Granted: 1995-04-27
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