baber/WOPTO huggingface dataset:
Patent KR-20000007573-A (KR)
Title: Phone-banking system using a fingerprint inquiry
Inventor: YOON TAE SIK
IPC: G06K9/20
Filed: 1998-07-04
Abstract: PURPOSE: A phone-banking system is provided to prevent a money crime by a pone-banking by confirming an identification of a user through a fingerprint comparison. CONSTITUTION: The phone-banking system comprises: an input terminal unit(100) for inputting fingerprint data of a phone-banking applicant and account number data; a phone-banking terminal unit(200) for inquiring a fingerprint of the phone-banking user through a telephone line to input data for deal particulars; and a main frame unit(400) for storing the data inputted through the input terminal unit to a data storage part(410), wherein the main frame unit(400) compares the fingerprint inquired through the phone-banking terminal unit with a fingerprint stored in the data storage part(410), and confirms the identification and the account number of the user to perform a money deal by a phone-banking according to the confirmed data.
Patent KR-20000009730-A (KR)
Title: Noise reducing apparatus of check valve for scroll compressor
Inventor: KIM JONG WON
IPC: F04C29/06
Filed: 1998-07-28
Abstract: PURPOSE: A noise reducing apparatus of a check valve is provided to remarkably reduce the noise caused by the operation of a check valve installed on the upper area of the venting port of the upper partition. CONSTITUTION: The noise reducing apparatus of a check valve contains:a check valve(11) made up of a valve housing(11A) having a venting slot on the upper and the side surface and a tubular valve working body(11D) installed inside of the valve housing(11A); a forcible driving piece for forcibly increasing the valve working body(11D) of the check valve(11) with the magnetic force caused by feeding the power source inside of the valve housing(11A) and for descending the valve operating body with the reverse pressure of the compressed refrigerant gas in a venting chamber(10).
Patent KR-20000010335-A (KR)
Title: Cam angle detection device of variable valve timing system
Inventor: KIM HAN KYUNG
IPC: F01L1/04
Filed: 1998-07-31
Abstract: PURPOSE: A cam angle detection device of a variable valve timing system is provided to simplify the design of the package of a cylinder head and also to reduce the cost for the parts. CONSTITUTION: The valve timing controller(40) installed on a cam shaft(10) and to change the phase difference of the cam shaft(10) by being operated by a solenoid valve(39) which receives the signals of an electronic control unit is equipped by a piezoelectric sensor(48) that is able to detect the phase of a cam by output voltage sensed by sensing the compressing load of a spring(30), and it is placed on the position where the spring(30) is placed.
Patent KR-20000014014-A (KR)
Title: Three dimensional embroidery shape and three dimensional embroidery method
Inventor: LEE SUNG HO
IPC: D05C7/00
Filed: 1998-08-17
Abstract: PURPOSE: A three-dimensional embroidery shape and a tree-dimensional embroidery method are provided to conveniently and simply express a three-dimensional figure. CONSTITUTION: The tree-dimensional embroidery method contains steps of: sticking a sheet of an elastic material of hard or of semi-hard on the surface of a fabric; expressing a figure by stitching the fabric and the sheet of the elastic material by an embroidering yarn; removing the sheet of the elastic material not to be filled inside the figure from the fabric. The process is very simple because the tree-dimensional embroidery method is completed by carving the needed figure by using the embroidering yarn after sticking the sheet of the elastic material on the fabric.
Patent KR-20000014627-A (KR)
Title: Latent heat thermal energy storage material and a process thereof
Inventor: PARK DONG GEUN
IPC: C09K5/00
Filed: 1998-08-22
Abstract: PURPOSE: Latent heat thermal energy storage material as thermal energy storage material having latent heat associated in phase change, using in heating and heat conservation micro encapsulated by coating polymer material after selecting organic compound like aliphatic or aromatic compound and making with sphericity. CONSTITUTION: Latent heat thermal energy storage material to increase thermal response and high temperature process of spherical microcapsule type is manufactured by making to sphericity with selecting organic compound like aliphatic or aromatic compound as phase change material in the range of 10-100°C of transition temperature, coating one layer or two layer over with polymer material of polymethylmethacrylate and polyurethane with excellent heat resistance, chemical resistance, water resistance.
Patent KR-19990023828-A (KR)
Title: 집적 회로 제조 방법
IPC: H01L29/78
Filed: 1998-08-25
Abstract: 예컨대 상부 실리사이드층을 통한 교차 확산을 통해 이루어지는 n + /p + 게이트의 바람직하지 않은 역 도핑이 폴리실리콘 게이트와 상부 실리사이드층 사이에 질화 티타늄층(예컨대, 21), 및 티타늄층, 텅스텐층 또는 탄탈층(예컨대, 19)을 삽입함으로써 금지된다.
Patent KR-20000018868-A (KR)
Title: Transmitting occupation control device and method for load dispersion ipc system
Inventor: KIM CHEON SU
IPC: H04L12/407
Filed: 1998-09-03
Abstract: PURPOSE: A transmitting occupation control device in a load dispersion IPC(Inter-Processor Communication) system is provided to simplify a circuit construction of a system and cut down fabrication cost by reducing the number of nodes. CONSTITUTION: A transmitting occupation control device comprises a load sharing controller for applying IPC(Inter-Processor Communication) data and a transmission request signal, a transmission alarm controller/arbitrator for generating a transmission occupation signal according to the applied transmission request signal, a communication processor for generating a transmission alarm signal according to transmission occupation signal to be applied to the controller/arbitrator and applying the IPC data to a transceiver, a transceiver for transmitting the applied IPC data to each node.
Patent KR-20000020322-A (KR)
Title: Apparatus and method for assembling base and main board assembly in hard disk drive
Inventor: CHOI BYUNG KYU
IPC: G11B33/12
Filed: 1998-09-19
Abstract: PURPOSE: An apparatus for assembling base and main board assembly in hard disk drive is provided to improve an assembly by accurately locating a main board assembly in an assembling process between a base and the main board assembly. CONSTITUTION: A plurality of holes(101) are formed to a side surface of a base(10) using a bracket. A circular hole(102) is formed for installing a spindle motor. A screw hole(103) is formed for connecting the spindle motor. A connecting boss(106) has a connecting hole to which a screw(S) is connected and projects to a bottom surface(10a) of the base(10). A reinforce portion(107) having a connecting hole(107a) is formed. A hole(207) corresponding to the reinforce portion(107) is formed on a main board assembly(20). An asperity(105) projects to a certain portion of the base(10). An inserting hole(205) is formed to a certain portion of the main board assembly(20).
Patent KR-20000021363-A (KR)
Title: Pottery composition for forming solid pattern of ceramic manufactures
Inventor: SEO JONG WON
IPC: C04B33/13
Filed: 1998-09-28
Abstract: PURPOSE: A pottery composition for forming a solid pattern of ceramic manufactures is provided to be attached on a dry kaolin, and presents equal colors with the ceramic manufactures after plasticity. CONSTITUTION: A pottery composition for forming a solid pattern of ceramic manufactures forms a solid pattern on a surface of a white porcelain. The pottery composition comprises: an aluminum component with 4.5 to 5.5 weight, plasticized in 800°C to 900°C; 0.5 weight to 0.25 weight of glaze used for the white porcelain; 2.5 weight to 3.2 weight of glucose; 0.2 weight to 0.4 weight of starch power; 0.15 weight to 0.25 weight of powdered bones; and 1.5 weight to 2.5 weight of a ball clay(GA irume), about 20 weight of refined kaolin utilized as basic raw materials of pottery.
Patent KR-20000021686-A (KR)
Title: Method for displaying recall mode in tv and device thereof
Inventor: EUN SUNG GYU
IPC: H04N5/455
Filed: 1998-09-30
Abstract: PURPOSE: A method for displaying a recall mode in a TV is provided, so that a user can watch a recall menu, which the user wants to watch only, when it is a recall mode by changing the recall menu. CONSTITUTION: A method for displaying a recall mode in a TV comprises the steps of: deciding(S11) whether a recall menu change is on in a recall mode; displaying(S12) a recall menu table when the recall menu change is on; setting up(S13) a required recall menu through the recall menu table; deciding(S14) whether the recall menu change is off after the required recall menu is set up; searching the recall menu table when the recall menu change is off in the step(S14) and when the recall menu change is not on in the step(S11), and loading(S15) the set recall menu; and displaying(S16) the set recall menu after the set recall menu in the step(S15) is loaded.
Patent KR-20000024761-A (KR)
Title: Exhaust electrode for dry etching apparatus and process chamber of dry etching apparatus for manufacturing semiconductor apparatus
Inventor: KIM TAE HUN
IPC: H01L21/302
Filed: 1998-10-01
Abstract: PURPOSE: An exhaust electrode for dry etching apparatus and process chamber of dry etching apparatus for manufacturing semiconductor apparatus is provided to uniformly form a plasma on a wafer by symmetrically forming a plurality of exhaust outlets around an electrode. CONSTITUTION: An electrode plate(12) is attached to an upper side of a housing(13). A plurality of exhaust outlets(14) connected to an exhaust tube(14) is symmetrically formed to a side wall of the housing(13). A plasma having a uniform ion density is formed on the electrode plate(12) because a plurality of exhaust outlets(14) connected to the exhaust tube(14) is symmetrically formed to the side wall of the housing(13). A wafer(5) located on the electrode plate(12) is uniformly etched because a plurality of exhaust outlets(14) connected to the exhaust tube(14) is symmetrically formed to the side wall of the housing(13).
Patent KR-20000025030-A (KR)
Title: Multiplex primer for nonspecific amplification of total dna or mrna of single organism
Inventor: WON SE YEON
IPC: C12Q1/68
Filed: 1998-10-07
Abstract: PURPOSE: A multiplex primer is provided which is used for the amplification of total DNA or mRNA isolated from single organism. CONSTITUTION: A set of multiplex primer is the hybrid of primers which have different base sequences individually. The length thereof is more than 11 bases and all primers which are included in a same set, have the same length. Some bases at the specific positions in the same set are identical and others have the same number of guanine and cytosine (or adenine and thymine), therefore, hybridization temperature thereof is similar
Patent KR-19990037147-A (KR)
Title: 파워스티어링 시스템
IPC: B62D5/083
Filed: 1998-10-16
Abstract: 본 발명의 과제는 보조력을 필요로 하지 않을 때 밸브기구측에 공급하는 제어유량을 적게하여 에너지손실을 저감시킬 수 있으며 또한 그 제어유량이 변화할 때에 조타필링이 나빠지지 않는 파워스티어링 시스템을 제공하는 데에 있다. 
     이를 해결하기 위해 밸브기구(V)는 제어유량을 제어하고 파워실린더(Q)에 분배공급하는 파워실린더 제어밸브와, 파워실린더(C)의 양 압력실을 바이패스하는 바이패스 제어밸브로 이루어지며, 상기 바이패스 제어밸브는 상시 닫혀있지만 제어유량(Q)이 최저유량(Q 1 )에서 보조력에 필요한 유량(Q 2 )으로 늘어날 때에 열어 파워실린더(C)의 양 압력실을 바이패스하는 구성으로 하고 있다.
Patent KR-20000034464-A (KR)
Title: Ferrite core filter
Inventor: CHO HEE GON
IPC: H03H9/00
Filed: 1998-11-30
Abstract: PURPOSE: A ferrite core filter is provided to arrange the ferrite core filter having a lead hole of a minimum unit and to use by connecting the ferrite core filter suited for the number of pins in an integrated circuit. CONSTITUTION: A ferrite core filter for four pins has two lead holes(202) each in both edges of the ferrite core filter(200) to be able to insert a lead line of an integrated circuit. The ferrite core has a V-shaped groove(204) in the lower side of a body of ferrite core filter(200), and a V-shaped projected portion in the upper part. A central point of the lead hole(202) neighbored upon the lower side arranged the V-shaped groove(204) of the ferrite core filter body(200). A length(0.5d) of the upper part arranged in the V-shaped groove(204) of the ferrite core filter body(200) is the same with a central point of the lead hole(202) neighbored upon the upper part of the V-shaped protruded portion(206) and a length(0.5d) of the upper part arranged the V-shaped protruded portion(206). Each length has a length corresponding to a half of an interval(d) between lead lines in one side of the integrated circuit.
Patent KR-20000038224-A (KR)
Title: Rf sputtering apparatus and method for forming thin films using thereof
Inventor: SEON JEONG MIN
IPC: C23C14/34
Filed: 1998-12-04
Abstract: PURPOSE: An RF(radio frequency) sputtering apparatus and a thin film formation method using thereof are provided to improve a quality of film by reducing bombardments and applying same RF power to a substrate and a target. CONSTITUTION: An RF sputtering apparatus(10) comprises a vacuum chamber(14), a target(18), a substrate(16) for loading a wafer, a gas supply unit(24), and an RF power supply unit(22). The apparatus further comprises a lower and an upper shields(21,20). The lower shield(21) adjacent to the substrate(16) is floated, and the upper shield(20) of the target(18) is grounded, thereby applying same RF power to the substrate(16) and the target(18). Thereby, the target(18) and the substrate(16) are generated self-bias voltage, respectively.
Patent KR-20000039505-A (KR)
Title: Input/output line structure for extraction stack of ion implanter
Inventor: PARK CHEOL MIN
IPC: H01L21/00
Filed: 1998-12-14
Abstract: PURPOSE: An input/output line structure for an extraction stack of an ion implanter is provided to attain stable connection and grounding, and thereby to prevent undesirable arcing phenomena. CONSTITUTION: An input/output line structure is employed for an oil box(300) equipped with an extraction stack. A tube(400) is longitudinally formed in the oil box(300). A first connection line(100) is set in the tube(400) and connected with inner electronic devices of the oil box(300). The first connection line(100) has a length approximately equal to the tube(400). On the other hand, a second connection line(200) having a relatively shorter length is inserted into the tube(300) and then grounded with the first connection line(100). Therefore, the second connection line(200) is not easy to bend, so that an exact and stable connection is made between the first and second connection lines(100,200).
Patent KR-20000040274-A (KR)
Title: Apparatus and method for constructing capacity data by determining long-distance traffic streamed in local switching network
Inventor: LIM YOUNG SUK
IPC: H04L12/24
Filed: 1998-12-17
Abstract: PURPOSE: An apparatus and a method for constructing capacity data by determining long-distance traffic streamed in local switching network are provided to control a local traffic and a long-distance traffic. CONSTITUTION: An apparatus for constructing capacity data by determining long-distance traffic streamed in a local switching network comprises a traffic data collection portion(120), a portion for storing information between stations(140), a traffic network capacity data construction portion(130), and a network capacity data storage portion(150). The traffic data collection portion collects basic data necessary for producing a network capacity data. The portion for storing information between stations stores information between stations. The traffic network capacity data construction portion extracts traffic from collected basic data and outputs corresponding network capacity data. The network capacity data storage portion stores the output network capacity data.
Patent KR-19990063191-A (KR)
Title: 치과용 접착제 키트
IPC: A61K6/884
Filed: 1998-12-18
Abstract: 분자내에 산기를 갖는 라디칼 중합성 단량체, 광증감제 및/또는 퍼옥사이드, 수용성 유기 용제, 유기 설핀산 및/또는 그의 염 또는 바비튜린산 및/또는 그의 유도체, 및 물을 포함하는 치과용 접착제 키트로서, 이 키트는 산기를 갖지 않으며 수중 불용성 또는 난용성인 라디칼 중합성 단량체, 아민 화합물, 실란 결합제 및 1,3,5-트리아진-2,4-디티온 유도체를 더 포함해도 좋다.  이 키트를 사용하면 사전 처리없이 치아에 접착 조성물을 직접 도포할 수 있다.
Patent KR-20000042159-A (KR)
Title: Method for composing program link and program receiving device using the same
Inventor: KIM IN GI
IPC: H04N7/025
Filed: 1998-12-24
Abstract: PURPOSE: A method for composing a program link and a program receiving device using the same are provided to change easily programs by making a link between desired programs. CONSTITUTION: A method for composing a program link comprises the steps of: separating SI(Service Information) and PSI(Program Specific Information) by parsing data of an input transport steam type; generating an EPG(Electronic Program Guide) for valid channels by various information within the separated SI/PSI; displaying the generated EPG on a screen; and composing a link list by linking a selected program on the EPG. A program receiving device using the same comprises a parser for separating SI/PSI, a control portion for generating an EPG and switching a desired channel, an MPEG decoder for decoding the separated program, a storage portion for storing the generated EPG and the composed link list, and an OSD portion for displaying the generated EPG and the composed link list on a screen.
Patent KR-20000043225-A (KR)
Title: Method for etching nitride layer of semiconductor device
Inventor: SONG WOON YOUNG
IPC: H01L21/31
Filed: 1998-12-28
Abstract: PURPOSE: A method for etching a nitride layer of a semiconductor device is provided to enhance a reliability of an etch process by presenting an optimum etch condition to maximize etch uniformity or minimize a CDB(Critical Dimension Bias) for representing an etch error rate. CONSTITUTION: A method for etching a nitride layer of a semiconductor device comprises the following steps. A mixed gas of CHF3/CF4/Ar is used as a dry etch gas when performing an etch process for a nitride layer formed on a semiconductor substrate. In the mixed gas, a mixing rate of the CHF3 and the CF4 is 1 to 1 and its variable rate is less than ±10.
Patent KR-20000044570-A (KR)
Title: Method for flattening interlayer dielectric of semiconductor device
Inventor: PARK SANG GYUN
IPC: H01L21/3105
Filed: 1998-12-30
Abstract: PURPOSE: A method for flattening an interlayer dielectric of a semiconductor device is provided to form a prominent interlayer dielectric by performing an additional oxidation process not to destroy a shallow junction. CONSTITUTION: A method for flattening an interlayer dielectric of a semiconductor device comprises the steps of: forming a protection layer on an upper portion of a semiconductor substrate(1) formed with fine patterns(2); burying a first SiH4+H2O2 insulating layer(4-1) between the fine patterns under a low temperature and a low pressure by using a reaction source of SiH4+H2O2; implanting ions of P and O2 within of the first SiH4+H2O2 insulating layer not to permeate a lower structure of the first SiH4+H2O2 insulating layer; performing a thermal process to oxidize the remaining water under a temperature less than 800°C; and depositing a second SiH4+H2O2 insulating layer on the first SiH4+H2O2 insulating layer and forming a plasma oxide layer thereon to flatten the substrate.
Patent KR-20000044671-A (KR)
Title: Fabrication method of ferroelectric capacitor
Inventor: KWON SUN YONG
IPC: H01L21/8246
Filed: 1998-12-30
Abstract: PURPOSE: A fabrication method of ferroelectric capacitor is provided to effectively suppress loss according to the generation of etching residue and the etching. CONSTITUTION: A fabrication method of ferroelectric capacitor comprises: a first step forming a first conductive film and a ferroelectric film; a second step forming a first etching mask defining a lower electrode on the ferroelectric film with photoresist; a third step selectively etching the ferroelectric film to form ferroelectric film patterns for exposing the first conductive film and removing the first etching mask; a forth step forming a second conductive film and forming a second etching mask on the second conductive film; and a fifth step selectively etching the second conductive film, ferroelectric film and the first conductive film and then removing the second etching mask.
Patent KR-20000047163-A (KR)
Title: Grain oil press
Inventor: KIM WOON KWANG
IPC: B30B9/02
Filed: 1998-12-30
Abstract: PURPOSE: A grain oil press is provided to extract strong scenting oil more than before. CONSTITUTION: A screw bar(22) rotates by a chain(29) and a chain gear with a motor. A first, a second and a third pressing roller(8,9,10,11,12,13) rotate by gears and move an upper and a lower belt(6,7). A heater(23) heats a grain supplying pipe and the heater bar of the pressing roller heats the metal part of the pressing roller and the lower belt. In this state, when roast grain is input to a hopper(28), the screw bar transfers the grain and roasts the grain again in a temperature of 200 to 220°C. Then, the grain falls down to the lower belt through a grain inlet pipe(25). The grain is pressed by the pressing rollers to extract oil after spread by a scratcher and a guide and covered with the upper belt. The extracted oil is collected by an oil inlet hole(43) and grain dregs is collected by a dregs inlet hole(42) after falling down or removed by a brush.
Patent KR-19990037639-A (KR)
IPC: B65G27/20
Filed: 1996-07-25
Abstract: A vibratory system for changing or maintaining a resultant vibratory force supplied to a spring support conveyor trough has a pair of spaced, parallel shafts and phase elements for supplying a resultant to force to the trough. A sensing device generates a signal corresponding to the real time phase angle between the phase elements. This signal is compared to a signal corresponding to the desired phase angle and the real time phase angle is essentially the same as the desired phase angle thereby providing the desired resultant force to the conveyor.
Patent KR-19990063629-A (KR)
Title: 중공사막 모듈
IPC: B01D65/08
Filed: 1996-09-19
Abstract: 본 발명은 모듈 케이스, 및 이 모듈 케이스에 적어도 한쪽 단부가 접착 및 고정되어 있는 다수의 중공사막을 포함하는 중공사막 다발을 포함하며, 여기서 중공사막 다발과 모듈 케이스의 접착부는 실리콘계 수지를 포함하고, 적어도 하나의 접착부에서 접착부를 보강하기 위한 보강용 립이 모듈 케이스 상에 직접 고정되는 것인 중공사막 모듈에 관한 것이다.  본 발명의 모듈은 장기간 동안 오존 함유수의 막 여과 및 오존 함유수에 의한 반복 세정을 가능하게 한다.
Patent KR-19990063930-A (KR)
Title: 장식 성형메탈캔을 제조하는 시스템 및 방법
IPC: B21D39/20
Filed: 1996-09-17
Abstract: 소비자에 대한 시각효과를 향상시키기 위하여 독특한 형상으로 메탈 캔보디(24)를 제조하는 방법은, 일실시예에 있어서, 직경이 대체로 일정한 측벽을 가지는 캔보디 블랭크(10)를 준비하고; 캔보디(24)의 원하는 최종형상에 일치하는 몰드중공을 형성하는 최소한 하나의 몰드벽(46)을 가지는 몰드유닛(38)을 준비하고; 캔보디 블랭크(10)를 몰드중공(46)내에 위치시키고; 가압유체를 몰드중공내에 공급하여 캔보디 블랭크(10)가 몰드벽(46)에 대하여 압축되어, 이로써 캔보디 블랭크(10)가 원하는 최종형상의 캔보디(24)로 되는 단계를 포함한다.  축방향의 압축을 캔보디 블랭크에 가하여 용기의 성형중에 내부응력을 저감하는 것이 바람직하다.  제2 실시예는 선택된 영역의 캔보디 블랭크를 선택된 양만큼 반경방향으로 변형하여 축을 중심으로 대칭이지만 반경방향으로 변형된 중간 캔보디를 이루고; 축방향의 구성품을 가지는 미리선택된 패턴의 기계적 변형부를 중간 캔보디상에 중첩하는 단계를 포함한다.  관련 장치 및 공정에 대하여 또한 개시한다.
Patent KR-19990067520-A (KR)
Title: 열전소자및그제조방법
IPC: H01L35/08
Filed: 1997-12-22
Abstract: 열전 소자들은 비스무트-안티몬-텔루트 또는 비스무트-텔루트-셀렌의 반도체 매트릭스와 반도체 매트릭스 안으로 납땜재료의 확산을 차단하기 위하여 증착된 확산 장벽층 사이에 접착력을 증가시켰다. 상기 주석 합금층은 상기 증가된 접착력을 제공하기 위하여 상기 반도체 매트릭스와 몰리브덴, 텅스텐, 니오브 및 니켈의 확산 장벽층 사이에 제공된다. 상기 주석 합금은 주석과 상기 반도체의 적어도 한 개의 원소와의 상호 확산에 의해 상기 반도체 매트릭스의 경계면에 형성된다. 주석은 상기 반도체 매트릭스 안으로 확산할 때 상기 열전특성이 떨어지지 않고, 상기 확산 장벽층의 금속원소에 충분한 접착력을 제공한다는 것을 알았다. 상기 열전 소자는, 
     a) 대향면을 갖는 열전 반도체를 준비하는 단계와, 
     b) 상기 열전 반도체의 각 대향면 위에 주석층을 증착하는 단계와, 
     c) 상기 각 대향면상에 주석 합금층을 형성하기 위하여 열전 반도체의 적어도 한 원소와 주석이 상호간에 확산하는 단계 및, 
     d) 상기 각각의 주석 합금층위에 몰리브덴, 텅스텐, 니오브, 및 니켈로 이루어지는 확산 장벽층을 증착하는 단계를 통하여 만들어진다.
Patent KR-19990067522-A (KR)
IPC: F02P7/067
Filed: 1997-08-09
Abstract: Disclosed are methods to determine the phase angle of a four stroke internal combustion engine with an odd number of cylinders and without a camshaft detector. According to said methods, recognition of phase angle occurs by emission of a first signal from a crankshaft angle sensor presenting a singularity whereby said signal is placed in relation to a second signal, which is for example a speed signal or an output signal of an inlet-manifold air-pressure sensor and the shape of the second signal is evaluated in the range of singularity of the first signal. As this signal shape is variable according to whether the crankshaft is in first or second revolution, the phase angle can be determined precisely.