baber/WOPTO huggingface dataset:
Patent KR-20020043760-A (KR)
Title: Apparatus of limited slip differental using a parking brake for automobliles
Inventor: HAN JANG SU
IPC: B60T7/10
Filed: 2000-12-04
Abstract: PURPOSE: A limited slip differential for a small vehicle is provided to operate conveniently by a single button interlocking with a parking lever, and to prevent wrong operation by returning a parking brake automatically in releasing the limited slip differential. CONSTITUTION: A parking brake system consists of a button(110) moved in the end of a parking lever(100); a select rod(120) fixed in the button, and composed of a fitting pin(121); a first bracket(130) having a first guide part(131) including a first fitting groove(132) guided by inserting the fitting pin in the side of the parking lever; and a second bracket having a second guide part(141) including a second fitting groove(142) guided by inserting the fitting pin at the side of the first bracket. A branch cable(10) is assembled with parking cable brackets by a nut, and connected to rear wheels. The limited slip differential is operated conveniently with the single button interlocking with the parking lever. Wrong operation is prevented with returning the parking brake automatically in releasing the limited slip differential.
Patent KR-20020044720-A (KR)
Inventor: NOH GYEONG HUN
IPC: H04M1/60
Filed: 2000-12-06
Abstract: PURPOSE: A subscriber unit for a transmission system is provided to offer a specific ring-back tone to each user by embedding a ring-back tone generating unit including a melody integrated circuit. CONSTITUTION: A subscriber connecting unit(11) connects to a telephone of a subscriber, checks on-hook and off-hook states of the telephone, and transmits inputted and outputted voice data. A signal processing unit(12) receives a ring-back tone(DNSIG) transmitted from an origination side to output a ring control signal(RC), and receives a sensing signal(DET) from the subscriber connecting unit(11) when a telephone of a termination side subscriber is the on-hook state to output a termination signal(UPSIG) for informing that the origination side and a termination side connect. A ring-back tone generating unit(13) generates a ring-back tone. An analog switch(14) provides the ring-back tone of the ring-back tone generating unit(13) to the telephone of the termination side subscriber according to the ring control signal(RC) through the subscriber connecting unit(11). A data converting unit(15) receives analog signals of the origination side and the termination side when the origination side and the termination side connect, converts the analog signal into a digital signal, and transmits the digital signal through a multiplexing unit.
Patent KR-20020046679-A (KR)
Title: method for forming capacitor semiconductor device
Inventor: KWON O SEONG
IPC: H01L27/115
Filed: 2000-12-15
Abstract: PURPOSE: A method for fabricating a capacitor of a semiconductor device is provided to decrease fabricating cost and improve a process margin as compared with a chemical mechanical polishing(CMP) process, by consecutively depositing a TiN layer and an IrO2 layer and by eliminating the TiN layer and the IrO2 layer by a photolithography process. CONSTITUTION: An interlayer dielectric having a contact hole is formed on a semiconductor substrate(31). A conductive plug is formed inside the contact hole. A metal silicide layer is formed on the conductive plug. The first and second metal barrier layers are formed on the entire surface of the semiconductor substrate including the metal silicide layer. The second and first metal barrier layers are selectively removed to expose the contact hole and the surface of the interlayer dielectric adjacent to the contact hole. A lower electrode, a ferroelectric layer and an upper electrode are sequentially formed on the semiconductor substrate.
Patent KR-20020046810-A (KR)
Title: Method For Forming The Bit Line Of Semiconductor Device
Inventor: KIM SANG DEOK
IPC: H01L21/28
Filed: 2000-12-15
Abstract: PURPOSE: A formation method of bit lines of semiconductor devices is provided to prevent a decrease of an electrical characteristic by previously restraining a bridge. CONSTITUTION: A bit line(115) made of a tungsten is formed on a semiconductor substrate(110). Then, a first swollen defect(120) is formed on the bit line(115). A hard mask(125) is deposited on the bit line(115). At this time, a second swollen defect(130) is formed on the hard mask(125) due to the influence of the first swollen defect(120). An HSG(Hemispherical Silicon Grain) layer(135) is deposited on the entire surface of the resultant structure so as to remove the second swollen defect(130). At this time, the bridge is restrained by the HSG layer(135) having a good planarization characteristic. After a thermal treatment is performed on the HSG layer(135), an ARC(Anti-Reflective Coating)(140) is deposited on the HSG layer(135).
Patent KR-20020049476-A (KR)
Title: Apparatus for back washing the ion exchanging resin
Inventor: KIM YANG SU
IPC: B01J49/00
Filed: 2000-12-19
Abstract: PURPOSE: A back wash device of ion exchange resin is provided, which can improve back-washing efficiency by reversible action of air bubble when back-washing ion exchange resin. The system can also improve regeneration effects of ion exchange resin thus saving chemical. CONSTITUTION: The system comprises an ion exchange tower(100), a No.1 supplying line and a No.2 supplying line, a bubble generator and a back-washing tower(200). Back wash water enter the ion exchange tower(100) through the No.1 supplying line and resin from the ion exchange tower(100) enter the back-washing tower(200) through the No.2 supplying line. The bubble generator is composed of a mixing part, a vacuum part and a suction part, which are formed as a venturi to suck air. In the mixer, a helical mixer is inserted.
Patent KR-20020050409-A (KR)
Title: apparatus and method for controlling transmitted/received voice level in mobile communication set
Inventor: KWAK UI SIK
IPC: H04M1/19
Filed: 2000-12-21
Abstract: PURPOSE: An apparatus and method for adjusting the transmit-receive volume of a mobile terminal is provided to automatically adjust the transmitting volume and received volume of a mobile terminal according to the amount of external noises. CONSTITUTION: An apparatus for adjusting the transmit-receive volume of a mobile terminal consists of a detection part(210), a control part(220), and an input-output part(230). The detection part(210) contains a detection sensor(211) sensing the amount of external noises, an amplifier(212) amplifying the current outputted from the detection sensor(211), and an A/D converter(213) converting the analog signal outputted from the amplifier(212) into digital data. Receiving the digital data from the detection part(210), the control part(220) controls the transmit-receive volume of the input-output part(230) according to the detected noise amount. The input-output part(230) is composed of a received volume amplifier(231), a speaker(232), a microphone(233), and a transmitting volume amplifier(234). The received volume amplifier(231) amplifies a received volume. The speaker(232) outputs the received volume. The microphone(233) receives a transmitting volume. The transmitting volume amplifier(234) amplifies the transmitting volume.
Patent KR-20020050578-A (KR)
Title: Access Device Which Is Able to Support Variable Data Layer
Inventor: AHN JEONG JUN
IPC: G06F15/16
Filed: 2000-12-21
Abstract: PURPOSE: An access system capable of supporting various data layers is provided to achieve access for various layers by adding a WAN(Wide Area Network) access processing module part to a generic access system. CONSTITUTION: An access system capable of supporting various data layers is comprised of a user access processing module part(33), a central control processing module part(40), and a WAN access processing module part(41). The user access processing module part(33) contains an analog access processing part(30), a digital access processing part(31), and a LAN access processing part(32). The analog access processing part(30) executes the access processing of an equipment by analog data. The digital access processing part(31) executes access processing for an equipment like a digital private exchange. The central control processing module part(40) comprises a TDM switching part(34), a voice processing part(36), and a processor module part(37). The TDM switching part(34) covers the switching between TDM buses. The voice processing part(36) compresses transmitting voice data and decompresses received voice data. The processor module part(37) supports an ATM-layer segmentation and reassembly function, and includes a UTOPIA bus. The WAN access processing module part(41) comprises a frame conversion processing part(38) and a physical access processing part(39). The frame conversion processing part(38) contains a framer part and a deframer part. The physical access processing part(39) converts frame data into an electrical signal or an electrical signal, received through an external physical medium, into frame data.
Patent KR-20020051325-A (KR)
Title: Apparatus for removing inclusions in molten steel and removing method by using it
Inventor: KIM JEONG SIK
IPC: B22D41/62
Filed: 2000-12-22
Abstract: PURPOSE: A device for removing inclusions of molten steel is provided to easily remove inclusions without input of separate subsidiary raw materials by collecting inclusions using a difference of electromagnetic characteristics between inclusions and molten steel, and a method for removing inclusions using the same is provided. CONSTITUTION: The device(10) for removing inclusions of molten steel comprises a refractory member(12) for protecting a built-in member from molten steel; a solenoid part(14) which is installed inside the refractory member(12) with being coiled in a coil shape so that an inlet(16) and an outlet(15) of a conductor pipe are formed on the same side surface of the refractory member(12), and which is consisted so that magnetic field is generated as cooling water is being discharged to the outlet(15) after cooling water is injected into the inlet(16) of the conductor pipe, wherein the refractory member is a refractory material of alumina, and the conductor pipe is a copper pipe. The method for removing inclusions of molten steel in a ladle comprises the process of removing the inclusions by dipping the inclusion removing device into molten steel in the ladle and removing supplying a power of 20 to 30 kW to the inlet and outlet of the solenoid part of the inclusion removing device in an AC power supply, wherein the method further comprises the process of agitating molten steel by blowing an inert gas into the bottom of the ladle in a flow rate of 0.066 to 0.133 Nm¬3/min per molten steel ton.
Patent KR-20010062634-A (KR)
Inventor: MIYAZAKI SHUNICHI
IPC: H01J29/70
Filed: 2000-12-22
Abstract: PURPOSE: A colour CRT is provided to correct a vertical pincushion distortion and a vertical inner pincushion distortion with low cost, simple and easy way. CONSTITUTION: A magnet(31) generates a magnetic field of homopolarity with a magnetic field generated by a vertical deflection coil(13) when deflected on the upper side, at the side of a phosphor screen of the deflection coil on upper side than a horizontal axis. A magnet generating a magnetic field of homopolarity with a magnetic field generated by the vertical deflection coil(13) when deflected on the lower side fluorescent the is provided at the lower side than the horizontal axis. A magnet(33) generating a magnetic field of antipolarity with a magnetic field generated by the vertical deflection coil(31) when deflected on the upper side is provided nearer to side of the phosphor screen than the magnets(31) on the upper side than the horizontal axis. A magnet is provided generating a magnetic field of antipolarity with a magnetic field generated by the vertical deflection coil(13) when deflected on the lower side, at lower side than the horizontal axis.
Patent KR-20010016602-A (KR)
Title: Fish-based fried noodle and process for manufacturing the same
Inventor: ETZO KAWAGUTZI
IPC: A23L17/00
Filed: 2000-12-26
Abstract: PURPOSE: A manufacturing method of fish ramen is provided. This fish ramen is digestible and low in cholesterol content, thereby preventing geriatric diseases. CONSTITUTION: The fish ramen is manufactured by i) melting frozen fish meat; ii) grinding the molten fish meat; iii) mixing 75-85w% of ground fish meat, 10-15wt% of wheat flour, 1-5wt% of starch, 1-2wt% of sodium glutamate, 1-2wt% of salt, 0.1-0.3wt% of sodium sorbate, and 0.3-0.6wt% of soy bean oil; iv) a first-forming the mixture in a first automatic molding machine; v) sterilizing the formed product at 120deg.C for 4mins; vi) a second-forming the sterilized product in a second automatic molding machine; vii) frying the formed product; and viii) cooling the fried product.
Patent KR-20020054462-A (KR)
Title: Headphone apparatus having the rotation ability
Inventor: KIM BYEONG SU
IPC: H04R1/10
Filed: 2000-12-28
Abstract: PURPOSE: A headphone system capable of rotating a speaker is provided to rotate the headphone only, without taking off the headphone, in case that the necessity of conversation with another person arises while a user listens to music through the headphone, so that the user can conveniently have a talk with him. CONSTITUTION: A headphone system is comprised of a headband(1), a speaker part(2), and a connection part(3). The speaker part(2) is installed at both sides of the headband(1). The headband(1) and the speaker part(2) are attached and fixed to each other, but the speaker part(2) can be rotated as the connection part(3) is installed. By the operation of the connection part(3), the speaker part(2) can be rotated at an angle of 180 degrees.
Patent KR-20020055707-A (KR)
Title: Aiming protector of head lamp for automobile
Inventor: BAEK JI HUN
IPC: B60Q1/04
Filed: 2000-12-29
Abstract: PURPOSE: A headlamp aiming protector of a vehicle is provided to mount the protector in the slide structure to be pushed or pulled into or from an opening/closing hole of a cover integrated with a bulb housing of the headlamp, thereby easily blocking the right and left aiming. CONSTITUTION: A headlamp aiming protector of a vehicle includes a cover(12) having an opening hole(28) formed with an opening/closing space(34) at a side, a plate spring(20) incorporated in the opening hole, and a slide element(22) slidably inserted into the opening/closing space and engaged with the plate spring for opening and closing the opening hole.
Patent KR-20020058164-A (KR)
Inventor: CHO JU HWAN
IPC: H01L21/304
Filed: 2000-12-29
Abstract: PURPOSE: A wafer cleaning apparatus is provided to prevent a particle and to control a descending speed of a brush arm by improving a structure. CONSTITUTION: A wafer cleaning apparatus comprises an arm(2), a brush(1) installed on one end of the arm(2), a supporting shaft(3) supporting the arm(2), the first motor(5) driven to circulate the brush(1) so as to perform a cleaning on a wafer, the second motor(6) driving the arm(2) to and fro so as to move the brush(1) from a stand-by position to a cleaning position, a timing belt(7) connecting the second motor(6) to the lower portion of the supporting shaft(3), an air cylinder(8) as an up and down displacement driving part moving the supporting shaft(3) up and down, a descending position fine controller(10) minutely controlling the position of the brush(1), and a piston of the air cylinder(8) controlling the descending speed of the brush(1), so that a contact impact between the brush(1) and the wafer is prevented, thereby restraining particles.
Patent KR-20010023380-A (KR)
Title: 탄화수소의 제조방법
IPC: C07C15/18
Filed: 1999-06-30
Abstract: 하기 화학식(1)로 표시되는 탄화수소중 어느 하나의 탄화수소와 하기 화학식(2)로 표시되는 탄화수소중의 어느 하나의 탄화수소의 혼합물을 탈수소 또는 산화탈수소하고, 증류하여 하기 화학식(3)으로 표시되는 모노올레핀 탄화수소 및/또는 디올레핀 탄화수소를 선택적으로 제조한다. 
       (1) 
       (2) 
       (3) 
     화학식(1) 및 (2)중에서, R은 이고, 
     화학식(3)중에서, R은 이며, R 1 은 비닐기 또는 에틸기임.
Patent KR-20010024115-A (KR)
Title: 개량된 디이에스 암호화 및 암호해독 시스템 및 방법
IPC: G09C1/00
Filed: 1999-07-07
Abstract: DES 64비트 구조와 32비트 데이터 구조 간의 최소 크로스오버를 갖고, 32비트 데이터 버스를 통해서 효율적인 데이터 전송을 할 수 있는 DES 순열이 제공된다. DES 64비트 데이터 구조에서의 그 밖의 모든 비트 위치는 32비트 데이터 구조에서의 연속 비트 위치에 순차 맵핑된다. 연속 비트 위치에 대한 순차적인 맵핑은 비효율적인 잠재하는 크로스오버를 최소화하고, 증가 또는 시프트하는 오퍼레이터들만을 이용함으로써 그 맵핑을 달성하는 알고리즘을 인코딩할 수 있다.
Patent KR-20010031515-A (KR)
Title: 가상링크가 가변 전송능력을 가진 무선통신 시스템
IPC: H04W48/12
Filed: 1998-10-23
Abstract: 하나의 기지국과 복수의 동작가능 이동국 간에 설정된 복수의 가상 무선 통신 링크를 통해 데이터 패킷을 전송하는 통신 시스템에 있어서, 상기 통신 링크는 가변 능력을 가지는데, 요구형 데이터 전송용 메시지는 세 가지 유형의 제어 데이터 패킷 내에서 복수의 통신 링크 혹은 채널상에서 전송된다. 상기 제어 데이터 패킷은 그 중요도에 따라 분류된 메시지를 포함함으로써, 효과적인 오류 처리가 가능하다. 메시지를 그룹으로 분할하는 것은 또한 데이터 전송의 유연성과 효율을 증가시킬 수 있는데, 이는 단지 필요한 제어 정보만을 전송하여, 수신된 제어 데이터 패킷을 상기 이용된 통신 모델의 상위 계층을 통해 우회하지(detour) 않고 직접 디코딩할 수 있기 때문이다.
Patent KR-20010033867-A (KR)
Title: 골수내 골격 신장 장치 및 방법
IPC: A61B17/58
Filed: 1998-01-05
Abstract: 피외 요소를 갖지 않는 절단된 뼈의 진행성 신장을 수행하는 신장 장치(10) 및, 상기 장치를 사용하는 방법이 제공된다.  상기 신장 장치(10)는 한 쌍의 신축성 결합 원통형 부재(20,30)를 구비하며, 뼈의 골수 공간 내로 삽입되며 하나의 원통형 부재(20,30)는 각각의 뼈 절단부에 부착된다.  감염된 사지에 의해 인가되는 통상의 비틀림 하에서, 클러치 기구(60,70)가 제공되며 상기 클러치 기구는 새로운 뼈 성장이 촉진되는 부위에서 뼈의 절단부를 분리하도록 상기 원통형 부재(20,30)를 강제 이격시킨다.  1°의 작은 회전이 신장을 일으키는데 충분하다.  피외 발생된 신장량을 검출 및 측정하기 위한 기구가 또한 제공된다.
Patent KR-20010034385-A (KR)
IPC: B01J13/14
Filed: 1999-01-22
Abstract: 중합체의 외곽내에 발포제가 봉입된 발포성 마이크로스페어로 평균입경이 3∼100 ㎛ 범위내이면서 입경분포의 변동계수가 1.50 % 이하인 것을 특징으로 하는 발포성 마이크로스페어 및 현탁중합법에 의한 발포성 마이크로스페어의 제조방법.
Patent KR-20010040632-A (KR)
Title: 난연성 중합체 조성물
IPC: C08L69/00
Filed: 1999-02-02
Abstract: 본 발명은, 포스페이트 에스테르가  트리(3급 부틸페닐)포스페이트 1 내지 45중량%, 디(3급 부틸페닐)모노 페닐 포스페이트 10 내지 55중량%, 모노(3급 부틸페닐)디페닐 포스페이트 10 내지 60중량% 및 트리페닐 포스페이트 10중량% 미만을 포함하는 혼합 트리(3급 부틸페닐)포스페이트임을 특징으로 하는, 하나 이상의 중합체 및 하나 이상의 포스페이트 에스테르 난연성 첨가제를 포함하는 중합체성 조성물에 관한 것이다.
Patent KR-20010041385-A (KR)
Title: 무선 통신 시스템 서비스 영역내의 가입자 위치를 추정하기 위한 방법 및 시스템
IPC: G01S5/02
Filed: 1999-01-26
Abstract: 무선 통신 시스템 서비스 영역(22)내의 수신기 위치에서, 가입자 신호의 수신 레이를 나타내는 특성 세트가 측정된다(26).  이 무선 통신 시스템 서비스 영역의 모델에서, 무선 통신 시스템 서비스 영역내의 수신기 위치에 해당하는 무선 통신 시스템 서비스 영역의 모델의 위치로부터 방사된 모델 레이의 전파 경로가 결정되고(34), 레이는 가입자 신호의 수신 레이를 나타내는 특성 세트에 기초하여 모델 신호 특성을 갖는다.  그 후, 무선 통신 시스템 서비스 영역의 가입자 위치가 모델 레이의 전파 경로에 응답하여 추정된다.
Patent KR-20010071348-A (KR)
Title: 인터넷-타입 네트워크에서 서비스를 결합시키는 방법,배치 및 서버
IPC: G06F15/00
Filed: 1999-05-27
Abstract: 본 발명은 두개의 서로 다른 인터넷 서비스를 결합하는 방법에 관한 것이다.  클라이언트(C)는 제 1 서버(SP)에 접속(1)하고 상기 서버에 식별 데이타(CID, PW)를 제공한다.  클라이언트(C)는 클라이언트(C)에게 서비스(6)를 제공하는 제 2 서버(CP)에게 전송된다. 제 1 서버(CP)는 클라이언트의 프로파일 데이타(PR(CID))를 제 2 서버(CP)에 전송하며, 제 2 서버(CP)는 클라이언트의 프로파일 데이타(PR(CID)) 및/또는 제 1 서버(SP)의 식별자에 따라 클라이언트(C)에 제공되는 서비스들을 주문(4,5)한다.  클라이언트 식별 데이타(CID)는 바람직하게는 제 2 서버로부터 은폐(3)된다.  서비스 주문 단계에서, 클라이언트(C)는 예를들어 제 1 서버(SP)의 식별 데이타에 근거하여 제 2 서버(CP)의 이용가능한 서비스들의 일부에 액세스하는 것이 차단될 수 있다.  제 2 서버(CP)의 이용가능한 서비스중에서, 주로 클라이언트에게 전달될 서비스들이 프로파일 데이타(PR(CID))에 근거하여 선택될 수 있다.
Patent KR-20020060475-A (KR)
Title: An air guide for air conditioner
Inventor: BAE JEONG HYEON
IPC: F24F1/00
Filed: 2001-01-11
Abstract: PURPOSE: An air guide of integral type air conditioner is provided to utilize an inner space of the air conditioner more efficiently. CONSTITUTION: An air guide(50) includes a passage forming part(51) guiding flow of air in an indoor side; and a control box mount(55) formed on one side of the passage forming part and having a lower part, a front surface and both of side surfaces open to be fluidically connected with an upper surface of a base pan and a control box(60) with an opening lower part executing control of an air conditioner mounted thereon so as to reduce required amount of material by removing unnecessary part thereof.
Patent KR-20020060790-A (KR)
Title: System and Method of Providing Contents Using Internet
Inventor: JANG JAE HO
IPC: G06Q99/00
Filed: 2001-01-12
Abstract: PURPOSE: A system and a method for supplying multiple contents are provided to increase advertisement effect of a product sold with a card for using the contents, by establishing a stable profit basis for a contents provider and allowing a user to use free contents. CONSTITUTION: A plurality of user PCs(70) are connected to the Internet(60). A web server(10), connected to the user PCs(70) via the Internet(60), charges works such as member management. A card server(20) manages a connected card. A contents server(30) provides a lot of contents. A plurality of disc arrays(40) has a disc array function for each server.
Patent KR-20020061684-A (KR)
Title: A Flat Type CRT
Inventor: JUNG SEONG HAN
IPC: H01J29/86
Filed: 2001-01-17
Abstract: PURPOSE: A flat color cathode ray tube is provided to reduce breakdown in a furnace during thermal processing and weight of a flat panel relative to size of same tube type. CONSTITUTION: A flat color cathode ray tube is designed to satisfy a condition 0.23<= OAH/(USD/2)<=0.27, where USD is a diagonal effective screen size of a panel, OAH is a distance from the center of the outer surface of the panel to an effective edge of a skirt. The flat color cathode ray tube further satisfies a condition 0.11<=OMH/(USD/2)<= 0.22, preferably 0.12<=OMH/(USD/2)<=0.19, where OMH is a distance from a panel outer surface mold match line to the effective edge of the skirt. The flat color cathode ray tube further satisfies a condition 0.08<=OSH/(USD/2)<=0.14, preferably 0.09<= OSH/(USD/2)<=0.12, where OSH is a distance from the panel outer surface mold match line to a break line.
Patent KR-20020061961-A (KR)
Inventor: LEE JIN SEONG
IPC: B25J13/00
Filed: 2001-01-19
Abstract: PURPOSE: A pet robot containing an electronic motor to move, an infrared radiation emitter and a sensor to move along movement trajectory prepared by a user as well as avoiding an obstacle during movement is provided. Therefore, it can play a variety of games and form a counterpart to mate. CONSTITUTION: This pet robot comprises: a motor drive part(120) for driving a motor to move in all directions; an infrared rays generating and sensing part(130) for sensing an obstacle; a sound sensing part(140) for sensing a sound; a mode setting part(150) for setting a motion mode; a memory(190) for storing programs and data for the motion; and a control part(110) for controlling the motor drive part, infrared generating and sensing part, sound sensing part and mode setting part according to the set motion mode. The sound sensing part contains a microphone, an amplifier, a high pass filter and a signal changing means.
Patent KR-20020064843-A (KR)
Title: Degaussing coil ability test apparatus and method
Inventor: LEE GAP SU
IPC: G01R31/24
Filed: 2001-02-03
Abstract: PURPOSE: An apparatus for testing a performance of a degaussing coil and a method thereof are provided, which performs a component characteristics inspection and an overall characteristics inspection of a degaussing which a PTC(Positive Temperature Coefficient) or an NTC(Negative Temperature Coefficient) has from a television where the degaussing coil is installed. CONSTITUTION: An electric field sensing part(31) senses an induced electromotive force generated from a degaussing coil. A signal processing part(33) receives the induced electromotive force sensed by the electric field sensing part and performs a processing to digitalize the induced electromotive force. An AD(Analog/Digital) converter part(35) converts an analog signal processed by the signal processing part into a digital signal. And a performance inspection part(37) inspects the performance of the degaussing coil by analyzing a pattern of the digital signal. The electric field sensing part includes a sensing coil using an inductive material. And the signal processing part includes an amplifier(33a) amplifying the induced electromotive force and a signal distribution part(33b) alternating a signal being output from the amplifier.