baber/WOPTO huggingface dataset:
Patent KR-20000015455-A (KR)
Title: Analog/digital converter of successive approximation register type
Inventor: CHOE HUN BAE
IPC: H03M1/12
Filed: 1998-08-29
Abstract: PURPOSE: An analog/digital converter is provided to compensate a digital output signal having an error generated by an error of establishing time. CONSTITUTION: An analog/digital converter comprises a comparison part(1), successive approximation register(2), a internal digital/analog converter(3), a timer(5) and an error correction part(6). The comparison part(1) receives an analog input signal, compares the analog input signal with input signal of the other input terminal and generates a digital signal. The successive approximation register(2) receives the output signal of the comparison part(1), stores gradually digital signals from the most significant bit to the least significant bit, and generates the stored signals as digital output signals. The internal digital/analog converter(3) converts the digital signals stored in the successive approximation register(2) to the analog signals according to a base voltage and applies to the other input terminal of the comparison part(1). The timer(5) controls operations of the successive approximation register(2) and the internal digital/analog converter(3). The error correction part(6) receives remained bits except an output signal of the comparison part(1) and the most significant bit stored in the successive approximation register(2), estimates the generation of an error, and increase or decrease the least significant bit, thereby correcting the errors.
Patent KR-20000018942-A (KR)
Title: Telephone book searching method in digital mobile phones recognizing voices
Inventor: HWANG JEONG UK
IPC: H04B7/26
Filed: 1998-09-07
Abstract: PURPOSE: A method is provided to perform functions of searching a telephone book through voices in digital mobile phones. CONSTITUTION: A telephone book searching method in digital mobile phones recognizing voices comprises the steps of: a first step of registering voices inputted by a user and a telephone number correspoding to it; a second step of entering a voice recognizing mode after converting to a telephone searching mode in the waiting state; a third step of displaying a voice input demand guide message and detecting whether a similar voice is in the voices, registered in the first step, within a predetermined error scope and voices inputted corresponding to the voice input demand guide message; a fourth step of displaying a telephone number corresponding to the registered voices, after deciding a similar voice is registered in the third step.
Patent KR-19990030026-A (KR)
Title: 1,1,1,3,3-펜타플루오로프로판의 합성
IPC: C07C19/08
Filed: 1998-09-22
Abstract: 본 발명은 액상 및 촉매 존재하에서, 불화 수소와 특히, 1,1,1,3,3-펜타클로로프로판을 반응시킴으로써 1,1,1,3,3-펜타플루오로프로판을 제조하는 것에 관한 것이다. 
     티타늄 기재 촉매를 사용하면 안티모니 기재 촉매에 의해 생기는 부식 작용의 문제점을 피할 수 있다.
Patent KR-20000024716-A (KR)
Title: Method for manufacturing semiconductor using tungsten layer formed by physical vapor deposition as preventing layer from diffusing
Inventor: LEE JIN HONG
IPC: H01L21/203
Filed: 1998-10-01
Abstract: PURPOSE: A method for manufacturing a semiconductor device uses a tungsten layer formed by a physical vapor deposition as a preventing layer from diffusing, thereby preventing that a device characteristic is deteriorated in a thermal process. CONSTITUTION: Before a first tungsten layer is formed by a chemical vapor deposition, a second tungsten layer is formed by using a physical vapor deposition. So a diffusing of a fluorine prevents that a fluoride of the first tungsten layer is prevented in a successive thermal process. The second tungsten layer is formed by a thermal evaporation, electron-beam evaporation or sputtering method. The second tungsten layer is formed on an insulation layer or a polysilicon layer. The first tungsten layer is formed by using WF6. Thereby, a semiconductor device's characteristic is not deteriorated in a thermal process.
Patent KR-20000025547-A (KR)
Title: Circuit for controlling hood fan of combination microwave and hood fan
Inventor: KANG DAE BYEONG
IPC: H05B6/68
Filed: 1998-10-13
Abstract: PURPOSE: A circuit for controlling a hood fan of a combination microwave and the hood fan is provided to drive the hood fan at any time. CONSTITUTION: A circuit for controlling a hood fan of a combination microwave and the hood fan comprises: a rotary hood fan for radiating heat by an operation of a microwave, and for emitting smoke generated from an outer heating apparatus; a first control switch for controlling so that outer power supply can be supplied to the hood fan, when a request for operating the hood fan is occurred from the outer heating apparatus; and a second switch for controlling the power supply of the hood fan, when a request for operating the hood fan is occurred according to the operating of the microwave. The controlling circuit is driven regardless of malfunction of products when the operation of the hood fan is necessary.
Patent KR-20000026850-A (KR)
Title: Storing case for photosensitive belt
Inventor: LEE MIN SU
IPC: B41J29/00
Filed: 1998-10-23
Abstract: PURPOSE: A storing case for a photosensitive belt is provided to easily perform the replacing and installing work of the photosensitive belt. CONSTITUTION: A storing case is prepared with a front and an outer circumferential wall(120) completing the outer appearance of a cylinder type case of which a rear face is opened and plural elastic members installed inside the cylinder type case so as to be elastically adhered on the inside of the outer circumferential wall so that the photosensitive belt is stored in an endless state. If the photosensitive belt storage case enters the printer, and the movable roller is returned to its original place, the roller is settled in the guide rollers(11,12,13) while the photosensitive belt receives tighter tension. Herein, a plate spring(200) is pushed by the increased tension so that the interval with the outer wall is wide. Thereby, if the storage case is drawn out, the storage case is only drawn out while the photosensitive belt keeps the tight tension on the guide roller.
Patent KR-20000027410-A (KR)
Title: Resonant inverter of pulse width variable-type
Inventor: OH IN HWAN
IPC: H02M7/493
Filed: 1998-10-28
Abstract: PURPOSE: A resonant inverter of pulse width variable-type is provided to switch zero voltage by one switch, and to limit a voltage stress of a power switching element of an inverter within voltage of DC(Direct Current) input, in order to operate a uninterruptible power equipment or various inverters with high efficiency. CONSTITUTION: A resonant inverter of pulse width variable-type comprises a voltage source, a first switch, a first capacitor, an inductor, a diode, a second capacitor, a second switch, and a load current source. The first switch is on in a corresponding mode by an outer control signal, and one end thereof is connected with the voltage source in series. One end of the first capacitor is connected to a contact of the voltage source and the first switch. One end of the inductor is connected to the other end of the capacitor, and the other end of the inductor is connected to the other end of the first switch. The diode is connected with the capacitor in parallel. One end of the second capacitor is connected to a contact of the inductor and the first switch, and the other end of the second capacitor is grounded to the contact. The second switch is connected to the second capacitor in parallel, and is on in a corresponding mode. The load current source is connected to the second switch in parallel.
Patent KR-20000028119-A (KR)
Title: Washing liquid for semiconductor fabricating device
Inventor: KIM JI HYEONG
IPC: H01L21/302
Filed: 1998-10-30
Abstract: PURPOSE: Washing liquid for a semiconductor fabricating device is provided to prevent the problems of an accident caused in mixing and the inconvenience of mixing each compound in a washing job site by using previously produced washing liquid for only semiconductor fabricating device with a mixture ratio and a constitution of compounds having an excellent washing ability. CONSTITUTION: Washing liquid for a semiconductor fabricating device is made by mixing HNO3, H2O2, and HF. Herein, the HNO3 is in an aqueous solution of 70%, the H2O2 is in the aqueous solution of 99%, and the HF is in the aqueous solution of 45-55%. The HNO3, the H202, and the HF are mixed in the ratio of 3: 4: 1. Moreover, the washing liquid is used for washing a diffusion furnace for performing a diffusion process. Therefore, the washing liquid improves washing ability and work safety by previously mixing various compounds in an optimum ratio.
Patent KR-19990037551-A (KR)
Title: 스핀이 안정된 로켓으로부터 인터셉터 요소들을 전개하기 위한대응 장치
IPC: F41F7/00
Filed: 1998-10-30
Abstract: 본 발명은 스핀이 안정된 로켓(10)에 의해 전개되는 비-폭발성 요격("NEI" : non-explosive intercepting) 요소(14)를 사용함으로써 적 미사일에 대한 대응 방어 수단(countermeasure defense system)을 제공하기 위한 것이다. NEI는 탑재부(17)에 실려지고, 제어 유닛(150)으로 제어되는 트리거 방출 조립체(46) 내에서 프로그래밍 되는 카운트다운되는 시간 지연 이후에는, 구동 기구(20) 또는 발화 장치(pyrotechnic device)(152)에 의해 제거되어지는, 슬리브 조립체(16)로 둘러싸여진다. 구동 조립체는 방출 조립체(46)에 의해 방출가능하게 유지되는 구동 로드(26)를 포함하는데, 이 방출 조립체에 의해 압축 코일 스프링 유닛(40)이 슬리브 조립체(16)를 전방으로 구동시키고, 탑재부(17)가 스핀이 안정된 로켓의 원심력에 노출되고, 그로 NEI 요소들이 일정한 각속도로 회전하는 로켓으로부터 바깥쪽으로 추진되어, 구름 같은 인터셉터 요소들을 이루게 한다. 또하나의 실시예에서, 발화 장치(pyrotechnic device)(152)는 로켓 엔진 하우징(102)로부터 탑재부(117)를 고정시키고 있는 전단 가능한(shearable) 나사(170)를 분리하는데, 그것에 의해서 상기 슬리브(121)를 로켓 하우징(102)과 분리되게 한다.
Patent KR-19990045021-A (KR)
Title: 여ㄴ마 패드의 마모 측정수단을 구비한 연마 장치 및그의 조작방법
IPC: B23Q17/09
Filed: 1998-11-05
Abstract: 본 발명은 화학·기계적 연마동안 연마 패드를 측정하는 센서를 구비한 연마 장치에 관한 것으로서, 측정값으로부터 연마 패드가 완전히 마모되거나 또는 불규칙하게 마모된 것이 확인되면 교체시킬 수 있으며, 측정값에 따른 유지보수표는 기계적인 예보에 따른 것보다 유지보수에 따른 시간을 최소로할 수 있으며, 완전히 마모되거나 또는 불규칙하게 마모된 연마 패드의 사용을 예방할 수 있으며, 선택적으로, 연마 장치는 연마 패드 측정값에 따라 재구성될 수 있으며, 연마 장치를 재구성하는 것은 패드수명을 연장할 수 있으며 연마 실행을 개선할 수 있으며, 본 발명의 일실시예는 레이저 센서와 같은 비접촉식 센서를 포함하여, 타겟영역에 입사빔을 조사하여 입사의 3각 측량과 반사된 빔에 의해 반사 지점과의 간격을 결정하며, 연마 패드가 마모되었을 때는 반사 지점과의 간격은 증가하며, 연마 동안의 연마 패드와 센서의 이동은 센서가 지그재그 궤도를 따라 연마 패드의 일부분을 측정하도록 하며, 센서 운동의 빈도수가 연마 패드의 회전 빈도수의 배수이면, 센서는 연마 패드의 1 이상의 회전후에 동일한 궤도를 그리며, 따라서, 동일 세트의 지점에서의 패드 두께 또는 마모량은 궤도의 하나의 궤적과 다음 궤적으로 비교될 수 있는 것을 특징으로 한다.
Patent KR-20000033019-A (KR)
Title: User interface method in non-real time type video on demand system and device therefor
Inventor: WON SEOK JIN
IPC: H04N21/475
Filed: 1998-11-19
Abstract: PURPOSE: A user interface method in non-real time type video on demand system and a device therefor are provided to simultaneously cinema information and data in down-loading a cinema. CONSTITUTION: A user interface method in non-real time type video on demand system comprises steps of: (a) reading and storing a cinema list from a server; (b) down-loading a cinema selected by a user among cinemas contained in the cinema list; (c) reading the cinema list stored in step (a); (d) outputting the information and data the selected cinema among cinemas contained the stored cinema list. The device therefor comprises a down load manager(104a) for down-loading a cinema containing related information and data, a memory(104b) for storing the information and data related to the selected cinema, and an MPEG-5 engine(104c) for reading and outputting the information and data related to the selected cinema.
Patent KR-19990014660-A (KR)
Title: 고체 전해질을 이용한 용존산소 측정장치
Filed: 1998-11-30
Abstract: 본 발명은 전해질을 액체에서 젤 타입의 고체 전해질을 이용함으로서 액의 누수방지와 안정적이고 장시간 사용이 가능하며 소형화가 가능하도록 한 용존산소 측정장치에 관한 것으로, 액체 속에 함유되어 있는 용존산소를 측정하는 장치에 있어서, 액체 시료내에 존재하는 산소를 투과시키고 액상성분은 불투과 시키는 선택적 투과성막과, 상기 막을 투과한 산소의 양에 따른 전류변화를 일으키는 전극, 그리고 상기 선택적 투과성막과 상기 전극 사이에 위치하고 젤 타입으로 이루어진 고체전해질을 포함하여 구성되는 고체 전해질을 이용한 용존산소 측정장치를 제공하는데 있다. 그리고, 상기 고체 전해질은, 폴리에틸렌옥사이드(PEO)와 염화칼륨의 복합물로 구성되며, 그 조성은 약 5w/w%의 폴리에틸렌옥사이드와 0.1M 이상의 염화칼륨으로 구성되어 젤 형상으로 이루어지도록 한다.  한편 상기 선택적 투과성막은 테프론 막으로 이루어지고, 상기 전극에 있어서는, 음극은 금(Au),은(Ag) 백금(Pt)중 어느 하나로 이루어지고, 양극은 Ag/AgCl 또는 Ag/AgO로 이루어지도록 한다. 
     따라서, 본 발명에 의하면 전해질이 누수되는 것이 방지되고 장치의 소형화와 안정적인 사용이 가능한 잇점이 있다.
Patent KR-20000040163-A (KR)
Title: Protocol for managing resource of atm between bsc and msc in mobile switching system
Inventor: MIN SEONG GI
IPC: H04L29/06
Filed: 1998-12-17
Abstract: PURPOSE: A protocol for managing resource of ATM between BSC(Base Station Controller) and MSC(Mobile Switching Center) in mobile switching system is provided to assign a PVC(Permanent Virtual Channel) by using an ATM BCC(Bearer Channel Control) protocol. CONSTITUTION: A protocol for managing resource of ATM between BSC and MSC in mobile switching system comprises the following steps. The connection between corresponding BSC and MSC is set up according to a call setup request message of a BSC. An ATM resource is assigned by using ATM BCC protocol according to a resource assignment message of the MSC. A wireless resource is assigned according to an assignment request message of the MSC and a new call is set up by mapping a previous assigned resource. The resource related to the call is canceled according to a call cancel request message of the BSC. The assigned ATM resource is recalled by using the ATM protocol according to a resource recall message of the BSC. All operations are finished according to call cancel finish message of the BSC.
Patent KR-20000041386-A (KR)
Title: Mos transistor manufacturing method
Inventor: LEE JEONG HO
IPC: H01L27/08
Filed: 1998-12-22
Abstract: PURPOSE: A method for manufacturing a MOS transistor is to provide an edge of a source/drain with a smooth profile so as to reduce a defect of an ion implantation. CONSTITUTION: A manufacturing method of a MOS transistor comprises the steps of: depositing an insulation layer having a thickness of 800 to 1200 angstrom on an upper structure of a semiconductor substrate(40) patterned a gate electrode thereon; dry-etching the entire insulation layer to form a sidewall spacer(43); over-etching an etching target set up in the range of 10 to 30 percentage of the insulation layer; and ion implanting a source/drain(44) using the sidewall spacer as an ion implantation mask, the insulation layer being an oxidation layer or nitrification layer.
Patent KR-20000042727-A (KR)
Title: Device and method for making clock of multi-function detector
Inventor: KIM BONG SEOK
IPC: H03K3/00
Filed: 1998-12-26
Abstract: PURPOSE: A device and a method are provided to control the clock from occurring just by setting the clock data at the control part and to make a various clock into a simple structure by making the clock through the counter according to the clock data set by users. CONSTITUTION: A device comprises a first and second generator(100, 200) which supplies analog signal; a first switcher(300) which switches the analog signal received from the first and second generator(100, 200); a first D flipflop(400) which transforms the analog signal into a digital signal; a first and second counters(500, 550) which outputs the signal if all the received signal is low; a main controller(700) which supplies the set clock data to a latch(900); a latch(900) which supplies the clock data from the main controller to the data comparer(600); a control part(800) which controls the clock data; and a data comparer(600) which outputs the low signal if the signal from the latch(900) and the first counter(500) is identical.
Patent KR-20000043810-A (KR)
Title: Method for producing two piece can by drawing-ironing complex process
Inventor: NAM JAE BOK
IPC: B21D51/16
Filed: 1998-12-29
Abstract: PURPOSE: A method is provided to shorten the number of processes for producing a two-piece can and to reduce the maintaining cost for a metal mold by complexly applying a unit process. CONSTITUTION: A two-piece can is produced by complexly applying a drawing process and an ironing process. A cup drawing system is composed of a punch(26), a blank holder(27) and a die(28). The die forms a curvature unit having 7 to 12 times as large as a material thickness and 3 to 10 degrees of an approaching angle. Therefore, the drawing process and 5 to 8% of the ironing process are conducted at the same time.
Patent KR-20000045607-A (KR)
Title: Error estimating apparatus of phase trace loop
Inventor: KIM JU SANG
IPC: G05D3/00
Filed: 1998-12-30
Abstract: PURPOSE: An error estimating apparatus of a phase trace loop is provided to enhance the trace speed and performance of a phase trace loop by introducing a weight function of a square function upon estimating a phase error. CONSTITUTION: First and second sign storage units(11, 21) stores the signs of inputted I and Q signals. First and second absolute value calculators(12, 22) takes the absolute values of the inputted I and Q signals. First to sixth quantizers(13-15, 23-25) quantize the I and Q signals outputted from the first and second absolute value calculators(12, 22). First, second, fourth, and fifth multiplexers(16, 17, 28, 29) multiplex the I and Q signals outputted from the first to sixth quantizers(13-15, 23-25). A first sign inverter(18) inverts the sign of the I signal outputted from the second multiplexer(17).
Patent KR-20000046270-A (KR)
Title: Pneumatic tire for four seasons
Inventor: KIM JAE CHEON
IPC: B60C11/14
Filed: 1998-12-31
Abstract: PURPOSE: A pneumatic tire for four seasons is provided to additionally show on-snow and on-ice efficiency in winter with a general function of tire in spring, summer and fall. CONSTITUTION: When a pneumatic tire of a general air pressure inside is traveling in summer, the traveling is performed in a state separated a spike pin(4) from a ground according as a grounded face of shoulder(20) has a difference of height with a middle grounded face(10). When a grounded width of a trade(1) is increased by ventilating the air pressure inside the tire to improve a on-snow and an on-ice efficiency in winter, an exclusive function of tire in winter is shown according as the traveling is performed by contacting the spike pin(4) protruded in the grounded face of shoulder(20) on a road surface.
Patent KR-20000046457-A (KR)
Title: Condenser integrated with receiver driver
Inventor: MIN EUN GI
IPC: B60H1/32
Filed: 1998-12-31
Abstract: PURPOSE: A condenser integrated with a receiver driver is provided to simplify an assembling process by integrating a header pipe with a receiver driver assembly and to replace an absorbent by fixing a storing member for the absorbent. CONSTITUTION: A receiver driver assembly is integrated with a header pipe(1) of a condenser. A working fluid is introduced into a space between a tank and a body through an inlet(11), and loses water through an absorbent(72). The working fluid is discharged out of the condenser by phase-changed into a liquid through an outlet(12) completely. Therefore, the receiver driver is simply assembled by forming the space for the absorbent between the tank and the body.
Patent KR-19990044418-A (KR)
Title: 전자 사진의 토너를 수용하는 박리 코팅으로 코팅한 물품
IPC: C08G77/442
Filed: 1996-07-26
Abstract: 본 발명은 프린트된 표시를 수용하고 고착시킬 수 있으며, 우수한 박리 특성을 유지하는 물품에 관한 것이다.  본 발명의 물품은 종이와 같은 기재상에 박리제로 코팅된다.  전자사진전도 장치에 의해 방출된 토너 입자를 수용할 수 있는 박리 코팅은 -10℃ 내지 65℃의 T g 를 갖는 하나 이상의 비닐 중합체 분절 및 하나 이상의 실록산 중합체 분절을 갖는 중합체를 포함한다.
Patent KR-19990067409-A (KR)
Title: 디지털 트랜스버셜 필터의 다중적 사용을 위한 회로 장치 및방법
IPC: H03H17/02
Filed: 1996-10-01
Abstract: 본 발명은 n개의 계수 블록 각각에 포함되어야 하는 두개의 곱셈 유니트(M1i, M2i)에 관한 것이며, 필터(F)의 내부 클록이 필터(F)에 의해 요구되는 외부 클록 보다 몇 배 높다면, 상기 곱셈 유니트는 다중적으로 사용된다.
Patent KR-19990071915-A (KR)
Title: 광촉매코팅조성물및광촉매담지구조체
IPC: C09D5/00
Filed: 1997-10-07
Abstract: 고온 및 고습 환경  및  내알칼리성이 필요한 외부 환경하에서 특히 유용한 광촉매-담지 구조체 ; 및  상기 구조체 제조용 광촉매 코팅 재료.    조성물은  광촉매  및  내알칼리성을 부여하기 위한 지르코늄 화합물, 주석 화합물  또는  지르코늄 화합물  및  주석 화합물을 포함하는 것을 특징으로 한다.     상기 구조체는  내알칼리성을 광촉매  및  부여하기 위한 지르코늄 화합물, 주석 화합물  또는  지르코늄 화합물  및  주석 화합물을 포함하는 것을 특징으로 하는,  광촉매층  및  담체사이에 제공된  접착층을 포함한다.
Patent KR-19990077050-A (KR)
Title: 아미노기를 함유하는 수용성 축합물과 부가 생성물의 제조 방법및 이 축합물과 부가 생성물의 용도
IPC: B01D21/01
Filed: 1997-01-03
Abstract: 본 발명은 아미노기를 함유하며, 제지시 향상된 탈수성과 보유성을 나타내는 수용성 축합물 및 부가 생성물의 제조 방법에 관한 것이다. 아미노기를 함유하는 수용성 축합물이나 부가 생성물 용액을 막을 통해 한외 여과하면, 그 축합물 또는 부가 생성물의 중량% 내지 95 중량%가 투과물로서 분리 제거되며, 필요한 경우에는 다시 잔류물로부터 아미노기를 함유하는 상기 축합물이나 부가 생성물이 보다 효율적으로 분리된다. 이러한 잔류물 중에 함유된 고분자량의 중합체 성분은 제지시의 보유제, 탈수제 및 고정제로서, 알킬 디케텐류로 종이를 접착시의 촉진제로서, 하수 슬러지의 응집제로서, 복합 필름 제조시의 접착제로서, 모발과 피부 콘디셔너의 첨가제로서, 그리고 음이온 활성 물질의 고정화제로서 사용된다.
Patent KR-19990087242-A (KR)
IPC: A61K45/00
Filed: 1997-02-25
Abstract: A method of treating and/or preventing macular oedema and age-related macular degeneration comprises topical ocular administration of carbonic anhydrase inhibitor (CAI).
Patent KR-20000015915-A (KR)
Title: Blower nozzle
Inventor: KITTSTEINER HANSULGEN
IPC: B29B13/02
Filed: 1997-06-05
Abstract: PURPOSE: A blower nozzle is provided to uniformly dispense a treating medium being flowed in through the whole width of a progressing material while flowing out with a uniform speed. CONSTITUTION: A blower nozzle, especially for heating or cooling web-like materials, especially plastic foil webs, comprises at least one distribution chamber (11) and often a supply chamber (7). In the improvement, between the supply chamber (7) and the distribution chamber (11) there is at least one other chamber (9), so that the treatment gas can flow from the supply chamber (7) to the at least one further chamber (9) via an overflow aperture arrangement (17) and from the further chamber (9) via another overflow aperture arrangement (23) into the distribution chamber (11) for further conveyance to the outlet aperture arrangement (27).
Patent KR-20000016292-A (KR)
Title: Method and equipment for hot rolling of large unit weight of sheet bar
Inventor: NITO DAKASUGU
IPC: B21C47/00
Filed: 1998-04-02
Abstract: PURPOSE: A method and a device for hot rolling of large unit weight are provided to save a manufacturing cost and to improve the quality of a product. CONSTITUTION: A winder is comprised of the steps of:attaching a rotary table on a support stand fixed in a stop state to possibly rotate; vertically installing a mandrel in the center of the upper face of the rotary table so as to make up the main body part of the winder; installing a guide device for exactly and smoothly performing the winding up of a sheet bar to the mandrel, facing the corresponding mandrel from a side direction; and preparing plural guide holes for pressurizing the sheet bar to the mandrel, which is employed to be wound up on the mandrel.
Patent KR-20000016500-A (KR)
Title: Automatic self-testing system
Inventor: WILKOSZ STEPHEN J
IPC: G05B23/02
Filed: 1997-06-06
Abstract: PURPOSE: An automatic self-testing is effected by providing a digital value to a sub-path under test while sensing an output to determine the functional validity of the sub-path under test. CONSTITUTION: The automatic self-testing system includes a plurality of sensor processing channels (100A-100D) or paths each having a sensor (102A-102D) for providing, either directly or indirectly, a digital value to a comparator (106A-106D) which compares the measured value with predetermined value that is, in turn, provided to coincidence logic (108A-108D) that evaluates the output of its comparator with the output of the comparator (106A-106D) of the other paths to provide an output indicative of a pass/fail condition. Each sensor (102A-102D) processing path includes two sub-paths that can be associated with or switched into the processing path while the dissociated sub-path undergoes off-line testing by a test processor. The combinational logic state of the system is monitored and converted into a decimal value that is compared with the set of decimal values corresponding to the finite known logic states of the system. The appearance of a decimal value that is not a member of the set of decimal values for the known logic states is thus an indication of a failure.