baber/WOPTO huggingface dataset:
Patent KR-20010038033-A (KR)
Inventor: KANG SEONG CHEOL
IPC: H04W4/00
Filed: 1999-10-21
Abstract: PURPOSE: An apparatus and method for generating a ring tone in a mobile communication system is provided to easily discriminate a user's terminal ring tone from other ring tones and to embody various ring tones. CONSTITUTION: An apparatus and method for generating a ring tone is comprised of a memory part(301), a CPU(302), a vocoder(303), a CODEC(304), a microphone(305), and a speaker(306). The memory part(301) stores a user's voice or sound data. The CPU(302) controls peripheral devices. The vocoder(303), as the first data conversion part, reads digital data from the memory part(301) under the control of the CPU(302) and converts the digital data in the form of data suitable for output. The CODEC(304), as the second data conversion part, converts the digital data inputted from the vocoder(303) into an analog signal. The speaker(306) outputs the analog signal converted in the CODEC(304). The microphone(305) inputs call, voice or sound data.
Patent KR-20000000439-A (KR)
Inventor: BAEK DONG HO
IPC: A61H23/02
Filed: 1999-10-22
Abstract: PURPOSE: A bathtub having a water running vibration wave generator is provided to promote the physical massage effect and the blood circulation by evenly vibrating the whole body of a user while being vibrated and circulated. CONSTITUTION: A bathtub has:a tub(2) containing water; a vibration generation piece(10) installed on one side; a vibration member(20) connected to the vibration generation piece and having a vertical hem to be extended toward inside of the tub; and many vibration wings(23,23') to vibrate and circulate the water in the tub by a certain wave.
Patent KR-20010045964-A (KR)
Inventor: JANG JIN MAN
IPC: H01L21/3205
Filed: 1999-11-09
Abstract: PURPOSE: A method for manufacturing a word line of a semiconductor device is provided to improve reliability of the semiconductor device, by preventing a tungsten layer from being oxidized in a polysilicon oxidation process when the polysilicon layer and the tungsten layer are used as word line materials. CONSTITUTION: Word lines stacked with a polysilicon layer(12), a tungsten layer(13) and a hard mask layer are formed on a semiconductor substrate(11). An oxygen-permeating material layer is formed among the plurality of word lines. A material layer(22) which oxygen does not permeate is formed on the exposed sidewall of the word line including the tungsten layer. After the oxygen-permeating material layer is removed, a polysilicon oxidation process is performed.
Patent KR-20010049094-A (KR)
Inventor: KIM JAE DONG
IPC: E04H6/02
Filed: 1999-11-30
Abstract: PURPOSE: An air parking machine system of vehicles is provided to utilize an air space to park vehicles without occupying nearly a ground space. CONSTITUTION: An air parking machine system consists of a supporting shaft(1), a front case(2) of a parking machine system, a rear case(3) of the parking machine system, an upper plate(4) of the parking machine system, an electronic control panel(5), a parking plate(6) moving after lifting a parking plate to the upper end in parking, a parking plate(7) fixing after lifting a parking plate to the upper end in parking, a parking plate(8) parking vehicles by fixing a parking plate to the lower end of the ground in parking, a fixing plate(9) for a vehicle tire, an operating switch(10) for front parking, a fixing switch(11) for front parking, a cancel switch(12) for front parking, a switch(13) restoring a front parking machine system to the original state, an operating switch(14) for reverse parking, a fixing switch(15) for reverse parking, a cancel switch(16) for reverse parking, a switch(17) restoring a reverse parking machine system to the original state, a cancel switch(18) for the fixing plate of the vehicle tire, a password input unit(19), a master power on/off switch, and an automatic alarm device for illegal parking.
Patent KR-20010054090-A (KR)
Inventor: PARK SEONG BEOM
IPC: G06F9/38
Filed: 1999-12-03
Abstract: PURPOSE: The java processor is provided to minimize the load of a hardware and to increase the operation speed by running SIMD(Simple Instruction/Multiple Data) command after mounting controllers, like ALU(Arithmetic and Logic Unit), multiplexer. CONSTITUTION: A bus interface(110) inputs/outputs the data between external I/O(Input/Output) devices via a bus. A command cash(120) decodes and outputs the command via the bus interface. An input buffer(130) buffers and outputs the decoded command and data. An integer part(170) and floating point part(150) operate the data, inputted via the input buffer, as the command and do SIMD-operation by the SIMD and execution signal. A data cash(160) stores the result of the integer part and floating point part and inputs/outputs the result to the bus interface. A stack controller(140) controls the data I/O of the data cash, integer part, and floating point part. A pipeline controller receives the SIMD and operation signal, and controls in order to do SIMD and general operation at the integer part and floating point part.
Patent KR-20010063335-A (KR)
Inventor: KWON O IL
IPC: G10L15/14
Filed: 1999-12-22
Abstract: PURPOSE: A speech model register using a specified PLU(phoneme like unit) HMM(hidden Markov model) and a registering method thereof are provided to reduce speech word model generation time and make it possible to apply in electronic appliances like car navigation system by reducing memory. CONSTITUTION: A keyboard(101) outputs a text data corresponding to a speech model input to be registered. A ROM(read only memory)(102) stores several HMMs and characteristic vector codebook corresponding to the specified PLUs. A RAM(random access memory)(103) stores a HMM word model corresponding to the registered speech model. A CPU(central process unit)(104) receives the text data from the keyboard(101) and separates it to several specified PLUs. Then, it leads HMM models corresponding to the PLU of the speech model and constructs and stores an HMM word model in the RAM(103).
Patent KR-20010058001-A (KR)
Inventor: SON YOUNG SUK
IPC: G07F11/00
Filed: 1999-12-23
Abstract: PURPOSE: A lock vending machine for conveniently providing various kinds of lock to consumers at a site adjacent to one's residence in order to meet various tastes of consumers. CONSTITUTION: When a consumer pushes a selection button, a withdrawing means (18) is rotated so that a plate (22) installed movably at the lower part of a lock receiving chamber (26) for preventing discharge of lock is opened. Right after discharging a lock corresponding to cash input, a solenoid valve (21) regulates an interrupter (24) to exactly control the number of lock to be vented. In the case that the bottom side of a casing (25) is closed with upwardly drawing the plate (22), the solenoid valve operated by electric force draws the interrupter so that a lock is placed between the interrupter (24) and the plate (22) for the next vent.
Patent KR-20010059553-A (KR)
Inventor: KIM TAE GEUN
IPC: G07F19/00
Filed: 1999-12-30
Abstract: PURPOSE: An apparatus for guiding paper money in a cash dispenser and a guiding method thereof are provided to facilitate the discharge and the withdrawal of the paper money, and to minimize the length of a paper money withdrawal route and of a paper money discharge route. CONSTITUTION: The apparatus for guiding paper money(C) in a cash dispenser comprises a semicircular roller assembly(30) and a lower roller(20) cooperating with the semicircular roller assembly to move the paper money. The semicircular roller assembly is constructed so that a first, a second, and a third semicircular rollers are driven by a roller driving pin mounted in a shaft(11,12,13) regardless of the rotation of the shaft. The semicircular roller is formed to function as a roller only across a half of the circumference of a roller. The semicircular rollers receives the driving power of the shaft via the roller driving pin with being selectively driven by a first driving pin, a second driving pin, and a slot(37). When the paper moneys are transversally supplied and stacked one by one, the paper moneys are transferred to the both directions perpendicular to the supply direction thereof, thereby the discharge and the withdrawal of the paper moneys are performed.
Patent KR-20010066698-A (KR)
Inventor: MUN JEONG U
IPC: H01Q15/16
Filed: 1999-12-31
Abstract: PURPOSE: An antenna structure is provided, in which a shield screen is installed in the direction opposite to the reflector and a strip line pattern serving as a feed antenna is formed onto the shield screen, to thereby allow the antenna to be manufacture in an easy manner. CONSTITUTION: An antenna structure comprises a reflector(11) having a metal- plated inner surface, and which reflects the radio wave being radiated so as to convert the radio wave into a parallel beam, and transmits thus-obtained parallel beam, or allows the radio wave to be focused at a single site; a shield screen(12) installed in the direction opposite to the reflector so as to seal the inner space of the reflector; a feed antenna pattern(13) formed of a strip line pattern which is formed onto the shield screen and positioned at the focusing portion of the reflector so as to radiate or absorb the radio wave; and a leg(14) arranged beneath the reflector so as to fix the shield screen and the reflector. The feed antenna pattern is made up of a conductive material like copper, silver or nickel.
Patent KR-20000023803-A (KR)
Inventor: ZIEMER JAMES N
IPC: C10G45/64
Filed: 1999-01-15
Abstract: PURPOSE: A layered catalyst system for the hydroconversion of a lubricating oil is provided, to improve the yield of a lubricating oil base stock, to increase the lifetime of a catalyst, and to avoid the reduction of a viscosity index. CONSTITUTION: A layered catalyst system comprises the first catalyst layer containing an isodewaxing catalyst; and the second catalyst layer which is layered onto the first catalyst, wherein the catalyst of the second catalyst layer is selected from a noble metal amorphous catalyst, a noble metal hydrogenation catalyst or their mixture. The noble metal is selected from platinum, palladium, rhodium, ruthenium, iridium and rhenium. A waxy oil is contacted with the hydrogenation catalyst and the effluent therefrom is contacted with an isodewaxing catalyst to produce a lubricating oil base stock.
Patent KR-20000030025-A (KR)
Title: Loxoprofen-containing preparation for external use
Inventor: MORI MASAO
IPC: A61K9/12
Filed: 1997-08-25
Abstract: PURPOSE: Provided is a favorable antiphlogistic/analgesic containing loxoprofen or a medically acceptable salt thereof. CONSTITUTION: An external formulation is preferably: (1) an anti-inflammatory analgesic external formulation containing, at least 0.1 to 5% by weight of Loxoprofen sodium, 0.5 to 5% by weight of crotamiton, 0.5 to 80% by weight of a solvent and/or a skin permeation accelerator, 3 to 30% by weight of water-soluble polymer and/or 5 to 95% by weight of oil-soluble polymer, and 5 to 60% by weight of moisturizer, all of the total weight of the formulation. It is more preferably: (2) an anti-inflammatory analgesic external formulation containing, at least 0.15 to 2% by weight of Loxoprofen sodium, 1 to 2% by weight of crotamiton, 0.5 to 80% by weight of a solvent and/or a skin permeation accelerator, 5 to 20% by weight of a water-soluble polymer and/or 10 to 80% by weight of an oil-soluble polymer, and 10 to 45% by weight of a moisturizer, all based on the total weight of the formulation. It is more preferably: (3) an anti-inflammatory analgesic external formulation containing, at least 0.5 to 2% by weight of Loxoprofen sodium, 1 to 2% by weight of crotamiton, 0.5 to 80% by weight of a solvent and/or a skin permeation accelerator, 5 to 20% by weight of a water-soluble polymer and/or 10 to 80% by weight of an oil-soluble polymer, and 10 to 45% by weight of a moisturizer, all based on the total weight of the formulation.
Patent KR-20000030021-A (KR)
Inventor: FISHER PAUL B
IPC: A61K35/76
Filed: 1997-08-15
Abstract: PURPOSE: A method for reversing the cancerous phenotype of a cancer cell which comprises introducing a nucleic acid comprising a melanoma differentiation associated gene (mda-7) into the cell under conditions permitting the expression of the gene so as to thereby reverse the cancerous phenotype of the cell. CONSTITUTION: Provided is a method for reversing the cancerous phenotype of a cancer cell by introducing a nucleic acid having the melanoma differentiation associated gene (mda-7) into the cell under conditions that permit the expression of the gene so as to thereby reverse the cancerous phenotype of the cell. And also provided is a method for reversing the cancerous phenotype of a cancer cell by introducing the gene product of the above-described gene into the cancerous cell so as to thereby reverse the cancerous phenotype of the cell. A pharmaceutical composition having an amount of a nucleic acid having the melanoma differentiation associated gene (mda-7) or the gene product of a melanoma differentiation associated gene (mda-7) effective to reverse the cancerous phenotype of a cancer cell and a pharmaceutically acceptable carrier is provided.
Patent KR-20000068621-A (KR)
Title: 과부하 인식장치를 구비한 모터제어용 회로
IPC: H02H7/08
Filed: 1998-07-07
Abstract: 본 발명은 신호검측단계를 갖는 과부하 인식장치를 구비한 모터의 시간제어용 회로에 관한 것이다.  본 발명에 따라서 모터의 과부하는 회로인덕터에서 발생된 전압피크를 정선하므로써 신호검측단계에 의해 검측될 수 있다.  이것은 경제적인 구조를 통하여 전자시스템의 손실없이 모터 과부하의 신뢰할만한 검출수단을 제공한다.
Patent KR-20000068977-A (KR)
Title: 무단 변속기의 변속비 제어 장치 및 그 방법
IPC: F16H59/42
Filed: 1998-07-30
Abstract: 본 발명은 자동차모터와 구동바퀴와의 사이에 설치되어 있으며 자신의 변속기어단을 무단으로 조절가능한, 일차측 및 이차측을 포함하고 있는 변속기의 변속단 제어에 관한 것이다. 본 발명에 따라 하나의 수단이 구성되어 있는데, 이 수단에 의해서, 이 수단을 이용하여, 사전에 입력가능한 또는 입력된 정도만큼의 자동차 감속상태를 확인할 수 있다. 상기 감속상태를 확인하여 그에 대한 반응으로 자동차모터의 출력회전수를 감지된 일차측 회전수에 따라 조절한다. 본 발명을 통하여 특히 저속(30 내지 60 Km/h)에서 급한 감속이 일어났을 경우에도 상기 CVT 변속기가 달린 자동차는 그 변속기에 의해서 시동변속단에 가까운 변속동작을 할 경우에 조차도 정지할 수 있도록 보장된다. 그 밖에도 유압펌프의 공급량을 증가시키기 위해서, 모터가 제동동작을 방해하는 성능을 바퀴에 인가할 것을 염려할 필요 없이, 연료로써 직접 모터를 점화하도록 하였다.
Patent KR-20000057369-A (KR)
Title: Cathode pulverisation targets in aluminium alloy
Inventor: MULLER JEAN
IPC: C22C21/00
Filed: 1997-11-27
Abstract: PURPOSE: Provided is a cathode pulverisation target characterized in that its active part, i.e. the volume of the target capable of being removed during the cathode pulverisation, CONSTITUTION: A cathode pulverisation target consists of a high purity aluminium alloy simultaneously containing copper and iron and having simultaneously a recrystallization temperature well above 20°C and an electric resistivity less than 2.85 μomega.cm at 20°C. The use of the target for making bonding circuits reduces the frequency at which voids and hillocks appear, while maintaining the resistance of the bonding circuits at values comparable to the resistance obtained with a high purity aluminium alloy, while also providing the etching characteristics comparable to those of high purity aluminium alloy.
Patent KR-20000069574-A (KR)
Title: 이동 통신장치 및 이 장치와의 통신을 위한 무선 송신기
IPC: H01Q1/24
Filed: 1997-12-17
Abstract: 무선주파수의 방출을 제한하는 지역에서 지능 이동 통신장치(1)를 이용하기 위하여, 상기 장치는 제거가능한 안테나(2) 및 상기 안테나를 제거할 때 상기 장치의 최소의 무선주파수 방출 부품에 전원을 스위치 오프하기 위하여 적용되는 스위치를 포함하는데, 그 결과, 상기 장치(1)에서 무선주파수 에너지를 방출시키지 않는 부품이 동작할 때 조차도 상기 장치에서 무선주파수가 방출하는 것을 막는다.
Patent KR-20000070844-A (KR)
Title: 정보 시스템
IPC: H04M3/42
Filed: 1998-02-04
Abstract: 본 발명은 정보 시스템에 관한 것으로서, 쌍방향 정보 배달 시스템 서버(2)는 인터페이스 장치(1)를 통해 사용자 자신의 전화(6)에 의해 사용자까지 액세스되는 표시장치(3)에 텍스트 또는 다른 시각 데이터를 배달하고, 상기 인터페이스 장치(1)는 키 패드 프레스 및/또는 음성 명령을 해석하고, 그것에 응답하여 서버(2)를 제어하고, 이것은 비싸고 안전한 위치에 위치되는 취약성이 있는 하드웨어(종래의 PC 및 모뎀일 수 있는)가 되지만, 공중에 의해 여전히 사용할 수 있게 되고, 표시장치(3)(종래의 PC 및 모뎀일 수 있는)의 위치가 오디오 출력이 비실용적이 되게 하기때문에, 인터페이스 장치(1)는 서버(2)에서 사용자의 전화(6)까지 오디오 채널을 통과할 수 있다.  전화(6)로부터 적당한 명령에 응답하여, 또한 콜을 미리 정의된 콜 센터로 변환할 수 있다.  상기 서버(2) 적용 스크립트 및 제어 프로그램은 주로 지시 도착(인터페이스(2))하는 서버로부터의 출력이외에 목적지(표시장치(3))에 전송되는 서버로부터의 출력을 제외한 노멀 WWW 인터넷 실행을 따른다.  표시장치(3)는 아이들 모드일 때 정보를 액세스하기 위해 다이얼에 전화번호를 포함하는 아이들 상태에서의 한 페이지 또는 페이지들을 표시한다.  이 번호는 인터페이스 장치(1)가 사용자가 사용하기를 원하는 표시장치를 확인하게 하는 표시장치에 특정되어질 수 있는 것을 특징으로 한다.
Patent KR-20010005750-A (KR)
Title: Absorbent article with improved fluid distribution materials
Inventor: LAVON GARY DEAN
IPC: A61F/
Filed: 1997-03-27
Abstract: Absorbent article comprising an absorbent core with a crotch region and at least one waist region, whereby said crotch region has a lower ultimate fluid storage capability than said at least one waist region. The crotch region further comprises a high flux liquid distribution material having a flux at 12.4 cm of more than 0.075 g/cm 2 /sec.
Patent KR-20010005760-A (KR)
Title: 금속 합금의 담금질 방법
IPC: C22F1/057
Filed: 1998-03-24
Abstract: 본 발명은 금속 합금의 변형 없이 다양하게 조절가능한 액체 담금질 수단으로 금속 합금을 담근질하는 방법에 관한 것이다.
Patent KR-20010020165-A (KR)
Title: 일회용 기둥 거푸집
IPC: E04G13/02
Filed: 1999-02-02
Abstract: 본 발명이 다수의 폴리스티렌 부분(3-7)들이 접착제에 의해 모서리(5)가 연결되는 튜브형 거푸집에 관한 것이다.  튜브형 본체 내부는 안쪽 면이 목재 가소처리된 경질 플라스틱(11-11') 또는 플라스틱으로 만들어진 시트(1)로 코팅되고, 불투과 장벽 역할을 하는 접착 테이프로 서로 연결된다.  거푸집의 외부는 튜브형 본체를 나선형으로 감싸며 접착제(7-19)로 고정되는 유리 섬유 메쉬(6-18)로 보호된다.  외부 덮개층(6) 위에는 자체 접착기능을 가지는 실링 밴드(8)가 장착되어 장식 및 광고 효과를 낼 수 있다.
Patent KR-20010012462-A (KR)
Title: 회전변위 검출기의 부착 구조
IPC: F16D3/40
Filed: 1998-05-11
Abstract: 차량에 설치되어 있는 킹핀 등의 회전축의 회전변위를 검출하는 회전변위 검출기의 부착구조에 관한 것이다.  회전변위 검출기의 입력축에 대하여 직경 방향으로 가해지는 힘에 의한 내구성의 저하나 파손을 방지하고, 또한 회동축과의 사이의 흔들림을 없애고 높은 검출 정밀도를 얻을 수 있는 회전변위 검출기의 부착 구조를 제공하는 것이 그 과제이다.  회동축을 회동 가능하게 지지하는 지지부재에 대하여, 회전변위 검출기가 그 입력축의 중심축선이 상기 회동축의 중심축선에 거의 일치하도록 고정된다.  상기 입력축과 회동축이 회동 전달 수단을 통하여 연결되도록 고정된다.  상기 회동 전달 수단은 상기 입력축의 중심축선과 상기 회동축의 중심축선과의 어긋남을 탄성변형에 의해 허용함과 동시에, 해당 입력축과 해당 회동축과의 상대 회동을 규제한다.  입력축의 중심축선과 회동축의중심축선과의 사이에 어긋남이 생기더라도 회동축으로부터 입력축에 직경 방향으로 가해지는 힘이 흡수완화되고, 회동축의 회동이 입력축으로 그대로 전달된다.
Patent KR-20010012732-A (KR)
Title: 구아니딘화 시약
IPC: C07K1/00
Filed: 1998-05-21
Abstract: N-보호 구아니딘 유도체를 생성하는 구아니딘화 시약으로서 사용되는 삼중 치환된 N-보호 구아니딘 및 구아니딘화 방법이 개시되어 있다.
Patent KR-20000018012-A (KR)
Title: Fancy goods vending machine and its drive control methods
Inventor: YANG HONG IL
IPC: G07F17/32
Filed: 2000-01-04
Abstract: PURPOSE: A vending machine and operation controlling method is provided to allow buyers have unique fancy goods by allowing the buyer to select the theme of letter pads or cards and decorate or edit the letter pad or card with a particular picture or caricature according to ones taste. CONSTITUTION: The machine comprises a CPU and a control part(5) which is the center of the vending machine, a monitor(4) which is connected to the CPU and control part, a printer(6), a camera(7), a speaker(8); and an interface part(2). A touch screen(1) and a coin/note detector(3) are connected to the interface part(2). The coin/note detector(3) is connected to the CPU and control part in order to transmit the data corresponding to the inserted coin or note to the CPU and control part through the interface part. The monitor and the printer are further connected to the CPU and control part.
Patent KR-20010073387-A (KR)
Inventor: PARK SE UNG
IPC: H04N7/01
Filed: 2000-01-14
Abstract: PURPOSE: A simple structured FRC(Frame Rate Converter) enables the conversion from a first video signal into a second video signal without confirming the movement between current field data of the first video signal and the previous field data of the first video signal. CONSTITUTION: A video receiver(110) receives external video signals by field unit. The received video signals are stored in a field memory(120), which delays and then outputs the video signals. A FRC(130) performs frame rate conversion with the delayed video signals. In accordance with the signal mode of the received video signals and the video signals to be converted, a controller(140) controls the operation of the FRC(130). An output unit(150) outputs the converted results of the FRC(130).
Patent KR-20010077178-A (KR)
Title: BCG inoculation device using encoded needle
Inventor: JANG EUN SOO
IPC: A61M37/00
Filed: 2000-02-01
Abstract: PURPOSE: Provided is a BCG vaccination instrument using a marking needle which gives special marking for identifying an infant so that it reduces the generation probability of missing children remarkably. CONSTITUTION: In the BCG vaccination instrument using the marking needle which is composed of a BCG vaccination needle(101) and a BCG vaccination body(102) that includes a convex(103) and a concave groove(104) to assemble the BCG vaccination instrument, the vaccination instrument using the marking needle is characterized by assembling multiple BCG vaccination instrument bodies to make the form of the vaccination needle in a form to be marked.
Patent KR-20000024501-A (KR)
Inventor: YANG YOON JUNG
IPC: H01L21/205
Filed: 2000-02-14
Abstract: PURPOSE: An in-situ physical vapor deposition system is provided to perform an in-situ deposition for both faces of a substrate by using a fixed physical vapor deposition source. CONSTITUTION: An in-situ physical vapor deposition system comprises a physical vapor deposition source(3), a vacuum chamber(1), a vacuum pump(2), and a substrate rotator(4). The substrate rotator comprises a rotating plate(9,10), a rotation gear(11), and a fixed gear(12). The rotating plate comprises two or more than two substrate holders to revolve and rotate the substrate holder. The rotating gear is installed to each rotating plate. The fixed gear is fixed to the vacuum chamber or an arbitrary portion to be connected to the rotation gear.
Patent KR-20010084015-A (KR)
Title: apparatus for improve of image quality
Inventor: HONG SEONG HUN
IPC: H04N5/14
Filed: 2000-02-23
Abstract: PURPOSE: An image quality improving apparatus is provided to restrain a noise included in an image and a crosstalk due to an imperfect Y/C separation. CONSTITUTION: A decoder(50) divides an image signal into a luminance signal and a color signal. A color size detector(80) detects a size of a color signal among a signal output from the decoder(50). A color removing section(70) removes a corresponding color-difference signal when a size of a color-difference signal detected by a color size detector(80). A noise removal and definition processor(60) removes a color signal component and a noise remaining a luminance signal among signals output from the decoder(50). A low pass filter outputs the first signal and the second signal having a noise and an edge.
Patent KR-20010087550-A (KR)
Title: Method Of Dual Tone Multi Frequency Signaling Detecting In Switching System
Inventor: PARK BAE YEONG
IPC: H04M3/22
Filed: 2000-03-07
Abstract: PURPOSE: A method for detecting a DTMF(Dual Tone Multi Frequency) signal in a switch system is provided to offer the reliability to a call connection of the switch system by stably detecting a digit selected from the DTMF signal inputted through a subscriber terminal without an error recognition. CONSTITUTION: A DSP(Digital Signal Processor) of a call control block judges whether a frequency of a provided DTMF signal is a frequency for being operated through a Goertzel algorithm or a frequency of a new frame(S102). If the frequency is the frequency of the new frame, the DSP simultaneously operates a repeat part to be composed as a denominator portion and a nonrepeat part to be composed as a numerator portion in the Goertzel algorithm, and temporarily stores a DTMF frame data inputted during the operation in a self storage region(S103). The operated results of the simultaneously performed repeat part and nonrepeat part are stored, and it is judged whether an operation of 95 frames for the repeat frame is completed(S104). If the operation of 95 frames to the repeat frame is completed, the operated value of the repeat operation value and the operated value of the non-repeat value are stored(S105). The DSP judges whether the operations of the repeat part and non-repeat part are performed 3 times or more(S106). If the operation of the repeat part and non-repeat part is performed by 3 times or more, result values operated during 3 times are compared(S107). It is judged whether the operated values are identical(S108). If the operated values are identical, the DSP informs the detected digit value to an upper processor(S109,S110).