baber/WOPTO huggingface dataset:
Patent KR-19990064216-A (KR)
Title: 개선된 전하 수집능력을 갖는 반도체 방사선 검출기
IPC: H01L27/146
Filed: 1996-10-04
Abstract: 방사선 검출기는 전이 방사선을 검출한다.  이 검출기는 적어도 2개의 면을 갖는 반도체(502)를 포함한다.  바이어스 전극(504)이 반도체(502)의 한 면상에 형성된다.  신호 전극(506)은 반도체(502)의 한 면상에 형성되어, 전리 방사선의 에너지 레벨을 검출하는데 사용된다.  제3 전극(제어 전극, 508)도 반도체(502)의 한 면상에 형성된다.  이 제어 전극(508)은 전하 구름이 신호 전극(506)에 인접할 때까지 전리 방사선에 의해 유도된 전하를 신호 전극(506)과 공유한다.  제어 전극(508)은 반도체(502)내에서 전계(518)를 변경시켜, 이 전계에 의해 전하 구름이 신호 전극(506)에 인접했을 때 전하 구름을 신호 전극(506)쪽으로 향하게 안내한다.  그 결과, 전하 이동 방사선(즉, 전자 또는 정공)의 포획이 감소되고, 저-에너지 테일링이 크게 제거된다.
Patent KR-19990076754-A (KR)
Title: 추출가능한 휘발성 재료 함량이 감소된 코팅된 광학 섬유
IPC: G02B6/44
Filed: 1997-10-23
Abstract: 메르캅토관능성 올리고머를 포함하는 방사선 경화성 코팅에 의해 코팅된 광학 섬유를 기재한다.  특히, 코팅은 수평균 분자량이 겔 투과 크로마토그래피(GPC)로 측정할 때 약 3,000 돌턴 이상인 메르캅토 말단 우레탄 올리고머의 경화된 반응 생성물을 특히, 1종 이상의 (메트)아크릴레이트 말단 우레탄 올리고머; 단량체 희석제 및 임의의 실란 접착 촉진제, 광개시제 및 안정제와 혼합하여 포함할 수 있다.  코팅은 경화될 때 추출가능물 함량이 속슬렛 추출로 수득한 바와 같이 약 15% 이하, 바람직하게는 약 8% 이하이고, 휘발물 함량이 열중량측정 분석한 바와 같이 약 7% 미만, 바람직하게는 약 3% 미만이다.  그러한 코팅된 광학 섬유의 제조 방법 및 코팅 자체도 역시 기재된다.
Patent KR-19990082488-A (KR)
Title: 토포이소머라제 억제제로서의 코르알린 동족체
IPC: C07D217/16
Filed: 1997-02-11
Abstract: 본 발명은 항암제로서 유용한 프로토베르베린 알카로이드 유도체 및 이를 사용하는 방법을 제공한다.  또한, 본 발명은 토포이소머라제 억제제로서 유용한 프로토베르베린 유도체를 제공한다.  추가로, 본 발명은 캄프토테신-내성 암세포에 대하여 효과적인, 특히 CNS 종양에 대하여 효과적인 토포이소머라제 I-표적 치료제인 코르알린 및 니티딘을 제공한다.
Patent KR-19990087101-A (KR)
Title: A method and apparatus for performing minimally invasive cardiac procedures
Inventor: WANG YULUN
IPC: A61B19/00
Filed: 1997-02-19
Abstract: A system for performing minimally invasive cardiac procedures includes a pair of surgical instruments coupled to a pair of robotic arms with end effectors that can be manipulated to hold and suture tissue. The robotic arms are coupled to a pair of master handles by a controller to produce a corresponding movement of the end effectors. The movement of the handles is scaled such that the end effectors movement corresponds differently, typically smaller, than the movement performed by the hands of the surgeon. The input button allows the surgeon to adjust the position of the handles without moving the end effector, so that the handles can be moved to a more comfortable position. The system may include a robotically controlled endoscope allowing the surgeon to remotely view a surgical site. The surgeon may manipulate handles and move end effectors to perform a cardiac procedure.
Patent KR-20000010858-A (KR)
Title: Switched current delta-sigma modulator
Inventor: TAN NIANXIONG
IPC: H03M3/02
Filed: 1997-05-07
Abstract: PURPOSE: Switched-current delta-sigma modulators, such as are used in oversampling analog-to-digital (A/D) converters are provided to offer reduced power consumption and chip area. CONSTITUTION: A first combiner is for generating a first combined signal by combining an analog input current signal with an analog version of a digital output signal. A first integrator having a first bias current and a first signal swing is for integrating the first combined signal. A first amplifier is for amplifying the first integrated signal by a first scaling factor. A second amplifier is for amplifying the analog version of the digital output signal by a second scaling factor greater than the first scaling factor. A third amplifier is for amplifying the second integrated signal by a third scaling factor greater than the first scaling factor. A current quantizer is for quantizing the third amplified signal to generate the digital output signal.
Patent KR-20000065225-A (KR)
Title: 방사선 검출소자 및 그 제조방법
IPC: G01T1/20
Filed: 1998-02-12
Abstract: 기판(1)위에 2차원으로 수광소자(2)를 배열하며, 각 행 또는 각 열의 수광소자(2)와 신호선(3)으로 전기적으로 접속된 본딩 패드(4)를 기판(1)의 외주변 위에 배열시키며, 수광소자(2)와 신호선(3)위에 보호용의 패시베이션막(5)을 설치하여 수광소자 어레이(6)가 형성되어 있다. 이 수광소자 어레이(6)의 수광면 위에 CsI기둥형상 결정의 신틸레이터(7)가 퇴적되며, 그 위로부터 Al무기막(9)을 파리렌제의 유기막(8, 10)로 끼워넣은 보호막(11)이 퇴적되어 있다. 보호막(11)의 외주는, 본딩패드(4)가 노출하도록 한 위치에서 절단되어 있으며, 패시베이션막(5)에 피복수지(12)에 의해 밀착되어 있다.
Patent KR-20000051178-A (KR)
Inventor: LEE GEUN TAEK
IPC: H01L21/28
Filed: 1999-01-19
Abstract: PURPOSE: A method for forming a metallic wire by treating a plasma of a seed layer is provided to remove a overhang situation on the seed layer and prevent the void from being formed in a contact plug thereby. CONSTITUTION: A method for forming the metal wire by the plasma treatment of the seed layer contains the following steps: a step to form the seed layer with vapor-depositing a conductor by physical vapor deposition on the top of inter-layer dielectric which has a contact hole exposing a partial conduction layer on the semi-conductor substrate, and at inner surface of the contact hole; a step to form the seed layer which does not generate the overhang situation by the plasma treatment of the seed layer; and a step to form the contact plug which is buried(fills up) by vapor-depositing the conductive substance on the seed layer to be treated by plasma, and the conductive layer to be extended from the top of the inter-layer dielectric and the contact plug.
Patent KR-20000051783-A (KR)
Title: Nonvolatile memory device
Inventor: KIM JONG HAN
IPC: H01L29/788
Filed: 1999-01-26
Abstract: PURPOSE: A nonvolatile memory device is to prevent from damaging of a tunnel oxidation layer, and to minimize an electric field by a charge accumulation in a float gate so as to improve a reliability of the device, when a programming or an erasing of the device is performed. CONSTITUTION: A nonvolatile memory device comprises a gate electrode consisting of a control gate, a float gate, and a gate oxidation layer, a source region, and a drain region, a threshold voltage(420) in an initial state where the float gate is electrically neutral, being set to mean value of a threshold voltage(410) in the programmed state and a threshold voltage(400) in the erased state, the threshold voltage in the programmed state being 6 volt, the threshold voltage in the erased state being 2 volt, and the threshold voltage in the initial state being 3.5 to 4.5 volt.
Patent KR-20000055683-A (KR)
Inventor: KIM CHANG JUN
IPC: F04D29/52
Filed: 1999-02-09
Abstract: PURPOSE: A shroud structure of outdoor machine of air-conditioner is provided to achieve an improved blast efficiency and reduced noise while changing the configuration of shroud in accordance with the volume of discharged air from an axial flow fan. CONSTITUTION: A shroud(60) structure is characterized in that a portion(A) where a relatively large amount of air flows from an axial flow fan(53) has a narrow width(W2) ranging from an inner surface to an outer surface while a portion(B) where a relatively small amount of air flows from the axial flow fan(53) has a wide width(W1). The portions(A, B) are connected smoothly to have a width therebetween falling in a value between the minimum width(W2) and the maximum width(W1). The air flow passing through the fan(53) has reduced maximum wind velocity and increased minimum wind velocity, thereby forming a uniform speed distribution overall.
Patent KR-20000056547-A (KR)
Inventor: KIM JONG KYU
IPC: G10K9/12
Filed: 1999-02-23
Abstract: PURPOSE: A thin film beeper and a method for manufacturing the same are provided to reduce the number of steps required in the manufacturing process of the thin film beeper. CONSTITUTION: A thin film beeper includes an iron core(7,7a), a magnet(5), a first terminal(19), a second terminal and a frame(9,91). An excitation coil is wound around the iron core. The iron core(7,7a) is located at the center of the frame. The magnet(5) is implemented in a metal fixed on the frame. The diaphragm(3) vibrates by the magnetic force excited by a current flowing through the excitation coil. The first terminal(19) according to the present invention is coupled with an outward coil. The second terminal fixes a connection electrode which is coupled with an outward power source and a thin film beeper on a predetermined position of the frame.
Patent KR-20000059793-A (KR)
Title: 탄구유기기(彈球遊技機)의 제어장치
Filed: 1999-03-09
Abstract: 본 발명은, 메인기판으로부터 서브기판으로의 일 방향으로만 제어용 데이터를 송신하고, 그 제어용 데이터에 의거하여 각종의 제어를 행하는 탄구유기기의 제어장치에 관한 것으로, 잡음 등에 의해 제어용 데이터가 잘못 판독되어도, 서브기판의 제어에 이상을 초래하지 않고, 서브기판을 정상으로 제어할 수 있는 탄구유기기의 제어장치를 제공하는 것을 목적으로 하고 있고, 그 목적을 달성하기 위해, 본 발명의 탄구유기기의 제어장치는, 유기의 제어를 행하는 메인기판과, 그 메인기판으로부터 송신되는 제어용 데이터를 수신하여, 그 수신된 제어용 데이터에 의거하여 소정의 처리를 행하는 서브기판과, 그 제어용 데이터의 송신을 상기 메인기판으로부터 서브기판으로의 일 방향으로만 가능하게 하는 일 방향 수단을 구비한 탄구유기기의 제어장치에 있어서, 상기 메인기판으로부터 서브기판으로 상기 일 방향 수단을 통하여 상기 제어용 데이터를 출력하는 제어용 데이터 출력수단과, 그 제어용 데이터 출력수단에 의해 출력된 제어용 데이터의 판독을 상기 서브기판에 지시하는 판독지시수단과, 그 판독지시수단에 의한 지시를 행한 후, 상기 제어용 데이터 출력수단에 의해 출력되어 있는 제어용 데이터 대신에, 상기 서브기판이 수신하여도 무효로 되는 무효 데이터를 출력하는 무효 데이터 출력수단을 구비하고 있는 것을 특징으로 하는 것이다.
Patent KR-20000060451-A (KR)
Inventor: CHO JUN HUI
IPC: H04N5/44
Filed: 1999-03-16
Abstract: PURPOSE: A method for processing universal digital/analog signals is provided to reduce noise of an analog signal processor when analog signals are processed by turning off a digital signal processor. CONSTITUTION: A serial to parallel converter responds to a serial clock signal to convert a serially-inputted address and serial data in parallel, and outputs the converted address and the serial data. An address decoder decodes the parallel data by responding to a system clock signal of a clock generator, and decides whether the parallel address is an address for a digital signal processor or an address for an analog signal processor. If the parallel address is the address for the analog signal processor, the analog signal processor is operated without operating the digital signal processor. If the parallel address is the address for the digital signal processor, the analog signal processor and the digital signal processor are operated.
Patent KR-20000065799-A (KR)
Inventor: PARK SUNG KOO
IPC: H04B1/40
Filed: 1999-04-09
Abstract: PURPOSE: A wireless device on a watch chain for recognizing telephone when a portable phone such as a personal communication service(PCS), a mobile phone or a cellular phone, receives a call, is provided to make signals received by sharing frequencies with a corresponding portable phone, so as to confirm telephone with the watch. And the device enables to recognize telephone through a device attached to a watch chain. CONSTITUTION: A portable phone transmits a signal to a device additionally attached to a watch chain. The attached device has a function to recognize wireless signals. A watch possessed by almost every man enables to most easily sense an alarm signal of a cellular phone with bell, vibration and lamp.
Patent KR-20010001387-A (KR)
Inventor: AHN GIL BEOM
IPC: G02F1/133
Filed: 1999-06-03
Abstract: PURPOSE: An active matrix LCD is provided to remove a flicker effect and an afterimage and respond to a panel size and a panel characteristic. CONSTITUTION: An active matrix LCD comprises a multitude of pixel(21,31), a multitude of data signal line(SL1-SLm), a multitude of gate signal line(GL1-GLn), a gate driver(24), a control portion(29), and an impact coefficient control portion(32). The pixels(21,31) are arranged with a matrix shape. The multitude of data signal line(SL1-SLm) is connected with the second electrode. The multitude of gate signal line(GL1-GLn) is connected with a gate electrode. The gate driver(24) is connected with the multitude of gate signal line, receives the first and the second voltages, and outputs one of the first and the second voltages. The control portion(29) varies the first voltage. The impact coefficient control portion(32) controls a changing point of the first voltage.
Patent KR-20010002388-A (KR)
Inventor: LEE SANG IK
IPC: F04D29/32
Filed: 1999-06-15
Abstract: PURPOSE: A rotating blade of a ventilation fan is provided to prevent air from being forwardly concentrated in a rotary shaft direction, thereby reducing the noise to create agreeable environment where the ventilation fan is installed. CONSTITUTION: In a rotating blade(10) of a ventilation fan1, a pointed end part(12) having a narrow sectional area in the front part of the rotating blade, the sectional area of the blade is increased as it goes to the end part and a concaved dispersion guide curved surface(14) is formed, in which section of the blade is slanted toward the rear than a vertical plane of a rotary shaft(3), so that the radial air flow is generated from the rotary shaft of the ventilation fan.
Patent KR-20010003901-A (KR)
Inventor: KIM GYEONG SUN
IPC: A61H33/06
Filed: 1999-06-26
Abstract: PURPOSE: A fumigation apparatus is helpful for the treatment and blood circulation by completely boiling and steaming herb medicine materials within a sealed space and forcing the vaporized gas to directly contact to anus, genital and skin. CONSTITUTION: A supersonic type fumigation apparatus using germanium includes a water vessel. The vessel is attached with a heater and a vibrator for generating supersonic waves to vibrate and vaporize water at the bottom side. On the inner side of the vessel, an air injection pipe is installed to diffuse the water vapor upward by means of an air injection fan fixed below the bottom side of the vessel. The vessel is constructed to house a herb medicine pack to pass medicine components boiled and steamed through the water vapor. The apparatus effects to treat any diseases such as constipation, hemorrhoids, prostatitis, etc.
Patent KR-20010004521-A (KR)
Inventor: JUN HYEON JU
IPC: B66B1/00
Filed: 1999-06-29
Abstract: PURPOSE: A device for registering the call of an elevator is provided to inform a system that a button is selected with a lamp, a light emitting diode and a buzzer when a call is registered at a platform. CONSTITUTION: A device for registering the call of an elevator comprises a pronouncing and a button input unit(100), a lamp driving unit(110) and a call control unit(120). The pronouncing and button input unit outputs a sound once the button is pushed to register a call. The call control unit drives the lamp driving unit through a lamp output terminal when the call is registered. Then, an elevator system is visually and acoustically informed that the button is pushed with the lamp and the sound.
Patent KR-20010005131-A (KR)
Inventor: OH CHAN GWON
IPC: H01L21/302
Filed: 1999-06-30
Abstract: PURPOSE: A chemical mechanical polishing method for an interlayer dielectricof a semiconductor device is provided to flatten a capacitor of a semiconductor device of 256M or more DRAM by using a Si-rich insulating layer as a polishing stop layer and a ceria slurry. CONSTITUTION: A chemical mechanical polishing method for an interlayer dielectric of a semiconductor device comprises the following steps. An oxide layer having enough silicon(17) as a polishing stop layer is formed on an upper portion of a semiconductor substrate(1) formed with a capacitor(4). A polishing object layer(18) is formed on an upper portion of the polishing stop layer(17). A chemical mechanical polishing process for the polishing object layer(18) is performed by using a slurry of ceria series until the polishing object layer(18) is exposed.
Patent KR-19990073306-A (KR)
Title: 해초류를이용한냉면가루와제분가루및숙면제조방법
Filed: 1999-07-01
Abstract: 본 발명은 특히  다시마, 미역, 염장 다시마, 톳, 파래, 청각, 우뭇가사리 등 각종 해초류를 용융내지는 분말 상태로 가공한 후 이를 이용하여 면류(숙면)나 냉면가루 및 일반제분 등의 식품을 제공하기 위한 냉면가루와 제분가루 및 숙면 제조방법에 관한 것인바, 이를 위해 다종의 해초류를 수세 및 침지시킨 다음 이를 미세 분쇄하고, 다시 교반기에서 소정의 열을 가하여 용융상태로 가공한 1차 가공품을 소맥분, 전분, 메밀 등과 혼합 처리하여 숙면류를 생산하고, 상기의 용융상태(faste)를 분무식 건조(Spray dry)방법을 통해 인스턴트 해초분말을 2차 가공함으로 냉면가루와 제분가루의 생산이 가능토록 함을 특징으로 한다.
Patent KR-20010008629-A (KR)
Inventor: HAN SEONG HU
IPC: H04Q9/00
Filed: 1999-07-02
Abstract: PURPOSE: A wired remote controller for audio is provided to be capable of using alarm service while hearing a music through an earphone. CONSTITUTION: The device include an alarm button check part(104), a timer controller(106), a timer(108), a voice source storing part(110), an amplifier(112) and a select part(114). The alarm button check part(104) checks whether an alarm button is pushed and outputs an alarm set start signal for starting to set an alarm. The voice source storing part(110) stores an alarm source, and the amplifier(112) amplifies the alarm source to output an alarm signal. The timer controller(106) changes a mode into an alarm set mode in response to the alarm set start signal, and sets an alarm time according to a predetermined up-down button. The timer controller(106) outputs a timer start signal to the timer(108) that counts a lapse in response to the timer start signal. The select part(114) outputs the alarm signal when the alarm signal generated according to an alarm command signal is over a predetermined level.
Patent KR-20010005410-A (KR)
Inventor: KIM TAE WHAN
IPC: F04B33/00
Filed: 1999-06-30
Abstract: PURPOSE: A container vacuumizing system is provided to lengthen the food preservation period while allowing the container vacuumizing to be performed in an easy manner. CONSTITUTION: A container vacuumizing system comprises a container air suction chamber(2), an upper chamber(3) and a lower chamber(1). A non-return valve unit includes a container-suction chamber control valve(9), a container air suction chamber-lower chamber control valve(7), a lower chamber-upper chamber control valve(8), and a relative valve(6). The air is sucked from a container(100) into the container air suction chamber, and flows into the lower chamber. Then, the air in the lower chamber flows to the upper chamber, and is discharged to the atmosphere. When a pressing portion(4) is pressed, a vacuum pressure is formed within the container air suction chamber, allowing the container-suction chamber control valve to be opened. Thus, the air in the container flow to the container air suction chamber along a container air suction passage(11). Here, the container air suction chamber-lower chamber control valve is closed by the vacuum pressure. The lower chamber opens the lower chamber-upper chamber control valve, and the air in the lower chamber flows toward the upper chamber. Since the upper chamber has a compressed pressure, the relative valve is opened when the compressed pressure is higher than the atmosphere pressure, such that the air is discharged from the upper chamber to the atmosphere.
Patent KR-20010009629-A (KR)
Inventor: JANG GI TAE
IPC: H04M1/72436
Filed: 1999-07-12
Abstract: PURPOSE: A method of transmitting a short message is provided to be capable of transferring a short message to a plurality of terminals at the same time. CONSTITUTION: Telephone numbers for multicasting a short message to a plurality of terminals are grouped and registered(211-221). After editing the short message, a short message multicast key is received. A group key for group transmission is received according to the input of the multicast key. After receiving a group number and a transfer key, the short message is transmitted by a telephone number registered in a group corresponding to the group number.
Patent KR-19990073463-A (KR)
Title: 기지국의신호전송방법및장치
Filed: 1999-07-14
Abstract: 이동통신망을 구성하는 기지국으로부터 전송되는 신호를 일정 시간동안 지연시켜 두 번에 걸쳐 전송하여 단말기에 같은 신호가 연속적으로 수신될 수 있도록 함으로써 다이버시티효과를 얻을 수 있는 기지국의 신호전송방법 및 장치가 개시되어 있다. 기지국의 신호전송장치를 구성하는 섹터인터페이스카드 또는 업카운터에 디바이더, 딜레이 및 컴바이너를 접속시켜 전송신호를 두 개의 전송신호로 분리한 후 하나의 신호는 일정한 시간동안 시간지연시켜 컴바이너에서 시간지연된 전송신호와 시간지연이 안된 전송신호를 합성한다. 상기 컴바이너에서 합성된 전송신호를 기지국안테나를 통해 전송하게 되면 단말기에는 시간지연이 안된 전송신호와 시간지연된 전송신호가 인가되므로 향상된 타임다이버시티효과에 의해 단말기의 수신율이 크게 향상된다.
Patent KR-20010010084-A (KR)
Inventor: JUN JUNG CHANG
IPC: G01S13/10
Filed: 1999-07-15
Abstract: PURPOSE: A method for improving the frequency linearity of a voltage adjustment oscillator is provided to measure a distance of a FW-CW(frequency modulated-continuous wave) radar microwave, and to reduce the calculation loading of a hardware. CONSTITUTION: A voltage adjustment oscillator(3) is applicable to a distance measurement apparatus using a FW-CW radar principle. The voltage adjustment oscillator produces a variable frequency signal. For analyzing the frequency non-linearity property of the voltage adjustment oscillator, a control voltage converter(2) produces a choppy signal to obtain a reference bit signal. For analyzing the frequency property per the time of the reference bit signal, a distance between zero points of the reference bit signal is calculated within the corresponding time to obtain the frequency variation per the time of the reference bit signal. The distance data between the zero points of the reference bit signal is increased to a desired data required at a digital-analog circuit of the control voltage converter using the interpolation method. The increased data is integrated, thereby improving the non-linearity of the voltage adjustment oscillator. In this way, since the non-linearity is improved by analyzing the frequency property per the time of the voltage adjustment oscillator, it is possible to improve the accuracy.
Patent KR-19990073489-A (KR)
Title: 오,폐수처리용다공성포획담체
Filed: 1999-07-13
Abstract: 본 발명은 다공성 구형 또는 다각형의 포획체에 각 종 오, 폐수 처리용 담체를 넣어 오, 폐수처리장의 혐, 호기성 생물처리공정에 투입하여 오, 폐수를 처리하는 방법에 관한 것으로 상세하게는 소규모 오수처리장, 중-대규모 하수처리장 그리고 축산, 침출수 및 산업폐수처리장의 혐, 호기성 공정에 본 발명의 다공성 포획체를 투입하여 미생물의 농도를 고농도화하여 기존 시설에서 유지할 수 있는 미생물의 량보다 크게는 10배 이상의 미생물을 농축하여 오, 폐수의 처리효율을 증대시키는데 그 기술의 목적이 있다.
Patent KR-20010017370-A (KR)
Title: Building crack repairing and reinforcing method
Inventor: CHOI HO JIN
IPC: E04G23/02
Filed: 1999-08-10
Abstract: PURPOSE: A building crack repairing and reinforcing method is provided to repair cracked or crumbled structures without reconstruction, and to save expenses and time by reinforcing using jointly with a reinforcing bar or beam and repairing a structure completely and safely. CONSTITUTION: A building crack repairing and reinforcing method comprises the steps of; boring a hole of 10 centimeters in diameter through the center of a cracked part to four fifth of the thickness of a wall deeply; applying synthetic mixture to adhere cement; filling a stirred solidified liquid; pressuring by pushing a reinforcing bar in the middle to penetrate a compound agent to every corner; after hardening the compound agent; applying putty to a fine cracked part, then finishing by painting in the same color. When a compound agent is hardened together with the reinforcing bar, the fastening force for the cracked part, elasticity and tensile strength is enhanced.
Patent KR-20010018254-A (KR)
Inventor: KUEM GYO SU
IPC: H04Q1/20
Filed: 1999-08-18
Abstract: PURPOSE: A method and circuit for measuring a voltage of a subscriber test device inside a full electronic exchange, is provided to match a maximum value of a processing capable signal level of an analog-to-digital(A/D) converter equally with a maximum value of a processing capable signal level in a digital signal processor(DSP), so as to reduce an error generated when measuring a voltage. CONSTITUTION: If a voltage is supplied to a line of a full electronic exchange subscriber and a voltage(Vi) is inputted to a pre-processing circuit(110), a digital signal processor(DSP)(130) confirms whether the voltage(Vi) is an alternating current(AC) voltage. If the voltage(Vi) is an AC voltage, non-inversion loops(113,114) are driven to input an input signal to an analog-to-digital(A/D) converter(120). Only a positive signal measuring value is calculated in order to compensate a lost negative signal, and twice of the measured value is outputted as a final AC voltage value. If the voltage(Vi) is a direct current(DC) voltage and the signal thereof is a positive signal, the non-inversion loops(113,114) are driven to read a maximum 2.5V value and calculate a measured value, and the calculated value is outputted as a result value. If the signal of the voltage(Vi) is a negative signal, inversion loops(111,112) are driven to read the inversed signal to maximum 2.5V and calculate a measured value. A highest bit of the measured result value is converted to '1' and outputted, in order to restore the inversed signal to a negative signal.