baber/WOPTO huggingface dataset:
Patent KR-20000015656-A (KR)
Title: Wafer temperature display and alarm apparatus of semiconductor diffusing equipment
Inventor: RYU CHOON-OK
IPC: H01L21/22
Filed: 1998-08-31
Abstract: PURPOSE: A wafer temperature display and an alarm apparatus of a semiconductor diffusing equipment is provided for a safe of a worker, to reduce a function degradation of an equipment and a badness rate of a wafer. CONSTITUTION: A wafer temperature display and an alarm apparatus of a semiconductor diffusing equipment includes a temperature detecting sense(16), a control part(18), a plasma display(20), and an alarm part(22). The temperature detecting sense is to detect the temperature of a wafer after a diffusion process. The control part is to confirm a temperature of a wafer by a sensing signal of the temperature detecting sense and decide whether the temperature of the wafer is normal or not as compared the temperature with an established temperature. The plasma display is to display a temperature according to a signal of the control part. The alarm part is to display whether a temperature of a wafer is normal or not.
Patent KR-20000018835-A (KR)
Title: Method and apparatus for backup of real time data exclusive line using in-band signal
Inventor: MUN YONG SUN
IPC: H04L1/00
Filed: 1998-09-05
Abstract: PURPOSE: A methode and an apparatus for backup of a real time data exclusive line using an in-band signal is provided to perform the backup for an exclusive line by changing the exclusive line to an additional line when a trouble of the exclusive line is generated. CONSTITUTION: The methode and an apparatus for backup of a real time data exclusive line using an in-band signal comprises: a CPU(200) for controlling a whole device; a DCE interface unit(260) connected a router or a Frame Relay Access Device(FRAD); an exclusive line interface unit(270) connected to the exclusive line; an additional line interface unit connected the additional line(280); a clock processing unit(250) for receiving a clock signal from the exclusive line interface unit or the additional line and generating a necessary clock; a data buffer(220) for transmitting and receiving data from and to the DCE interface unit; a multiplexer(230) for inserting and extracting an in-band signal; an in-band signal receiver(241) for determining an error rate of the in-band signal; and an in-band signal generator(242) for transmitting the in-band signal to the multiplexer.
Patent KR-20000020353-A (KR)
Title: Method of eliminating polymer including metal component
Inventor: HEO NO HYEON
IPC: H01L21/027
Filed: 1998-09-21
Abstract: PURPOSE: A method of eliminating a polymer including a metal component is provided to prevent an electrical short caused by unnecessary contacts among circuits. CONSTITUTION: A method of eliminating a polymer generated by eliminating a photoresist layer formed on a surface of a wafer, comprises the steps of: applying O2 and Ar to a process gas supplied into a reaction room to eliminate the polymer; and ionizing the gas and eliminating the photoresist layer. The polymer includes a metal component and the metal component includes aluminum.
Patent KR-20000020444-A (KR)
Title: Video camera having special effect processing function on reproduction operation
Inventor: KIM IN HO
IPC: H04N9/74
Filed: 1998-09-21
Abstract: PURPOSE: A video camera is provided to process a special effect of a recorded displays on reproduction operations by selectively outputting an output of a converter to input and output terminals of a decoder. CONSTITUTION: A mode switching part(74) selectively outputs an image signal. A converter (76) converts the image signal from the mode switching part(74) to a digital signal. A decoder(78) decodes the composite image signal from the converter to be outputted to a luminance signal processing part and a color signal processing part. A switching part(77) selectively outputs the output of the converter(76) to input and output terminals of the decoder(78). A controller(88) generates a mode switching signal according to a reproduction mode and a camera mode.
Patent KR-19990062534-A (KR)
Title: 가변 상태수를 가지는 비터비 등화기의 상태수 조절 장치 및방법
IPC: H04L25/02
Filed: 1998-10-19
Abstract: 가. 청구범위에 기재된 발명이 속한 기술분야 
     가변 상태수를 가지는 비터비 등화기의 상태수 조절 장치 및 방법에 관한 것이다. 
     나. 발명이 해결하려고 하는 기술적 과제 
     채널의 상태에 따라 비터비 등화기의 상태수를 가변할 수 있는 가변 상태수를 가지는 비터비 등화기의 상태수 조절 장치 및 방법을 제공함에 있다. 
     다. 발명의 해결방법의 요지 
     가변 상태수 비터비 등화기에 있어서, 수신된 데이터를 등화 하기 위해 수신 데이터로부터 트레이닝 시퀀스를 검출하고 시스템 트레이닝 시퀀스와 비교하고 채널 임펄스 응답을 추정하는 채널 임펄스 응답 추정부와, 임계치 레벨을 결정하고, 상기 임계치 레벨 보다 높은 채널 임펄스 응답을 가지는 채널 임펄스 응답을 재구성하고 상기 채널 임펄스 응답의 탭 수 L에 따라 상태수 2 (L-1) 를 발생하는 상태수 결정부와, 다수의 각기 다른 상태수를 가지는 비터비 등화부를 가지고, 상기 2 (L-1) 신호를 입력받아 상기 비터비 등화부 중 2 (L-1) 의 상태수를 가지는 비터비 등화부로 스위칭하고, 상기 재구성된 채널 임펄스응답을 입력받아 비터비 알고리즘을 실행하는 비터비 등화기로 이루어짐을 특징으로 한다. 
     라. 발명의 중요한 용도 
     디지털 무선통신시스템의 수신단에 이용한다.
Patent KR-20000032826-A (KR)
Title: Method for controlling connecting agreement for circuit agential service in atm exchange
Inventor: HAN MI SUK
IPC: H04L12/433
Filed: 1998-11-18
Abstract: PURPOSE: A method for controlling a connecting agreement is provided to perform the control of connecting agreement by converting a parameter of an ATM(asynchronous transfer mode) traffic characteristic without a separated device for securing a quality of a circuit agential service in an ATM exchange. CONSTITUTION: At receiving a request of a new circuit agential connection, a communication state or a middle state is defined by checking a time slot appointed in the new circuit agential connection. An amount of band to be allocated in the new circuit agential connection is decided based on a peak cell rate combined a security and non-security. After the amount of band during using inside an ATM link to be established the new circuit agential connection is calculated, the using amount of band and the amount of band allocated in the new circuit agential connection are summed. The new circuit agential connection is agreed by checking if the summed amount of band is over a permitted amount of band.
Patent KR-20000015762-A (KR)
Title: Cellular phone apparatus having a high efficiency when using reserved channel
Inventor: BERASAMI JAY
IPC: H04L12/28
Filed: 1998-11-28
Abstract: PURPOSE: The present invention relates to cellular communication network which could control traffic jam in network by giving priority in the access to the designated channel. CONSTITUTION: A wireless network comprises; a first mobile communication apparatus having a regular priority; a second mobile communication apparatus having a high priority; and a first base station having a plurality of channel of a regular priority and at least one channel of a high priority, and when the channels of the regular priority is used, the first mobile communication apparatus would be a high priority channel, and when none of the other channels is used, the above base station cuts off the communication with the first mobile communication apparatus which is on the channel f the high priority and the second mobile communication apparatus would be the high priority channel.
Patent KR-20000034431-A (KR)
Title: Method for joining between switching board and network managing center using card for processing x.25 protocol
Inventor: KIM YONG SEUNG
IPC: H04L29/06
Filed: 1998-11-30
Abstract: PURPOSE: A method is provided to join between a switching board and a network managing center through a packet network by using a workstation equipped a certain X.25 card to perform a function for processing an X.25 protocol. CONSTITUTION: After establishing a certain FIFO(first-in first-out), a connection for a COD(command of description) or a POD(print of description) is established by receiving a certain connection request to sent from a workstation to a manager terminal of a network managing center. When the COD is transmitted to the manager terminal, the COD is stored in the FIFO after an X.25 card inserts a certain information about the manager terminal and a number of COD by receiving the COD. The workstation transmits to a switching board by reading the appropriate COD from the FIFO, the switching board proceeds a certain processing process according to the received COD, and the switching board transmits a message of processing result according to the processing process to the workstation. The workstation writes the transmitted message of result in an appropriate destination of the FIFO, and the X.25 card transmits to the manager terminal by reading the appropriate message of result from the FIFO.
Patent KR-20000041226-A (KR)
Title: Method for automatically adjusting focusing of optical disk player
Inventor: KIM JONG UN
IPC: G11B7/09
Filed: 1998-12-22
Abstract: PURPOSE: A method for automatically adjusting focusing of an optical disk player is provided to improve access speed of data and to release load on a system by applying the adjustment of focusing to each optical disk. CONSTITUTION: A playback mode of an optical disk player is set for a certain mode. A reference level is set for comparing the level of a playback signal from an optical pickup. Using the optical pickup operates a focusing adjustment. If the signal level is lower than the reference level, the duty value of a PWM(pulse width modulation) is increased for one step. If the signal level is higher than the reference level, the duty value is decreased for one step. When the levels are the same, the duty value is stored in a memory for deciding the completion of the focusing adjustment. If the focusing adjustment is not completed, the playback mode is changed to another mode.
Patent KR-20000042270-A (KR)
Title: Variable air suction system of automobile
Inventor: HWANG JUN HA
IPC: F02B37/02
Filed: 1998-12-24
Abstract: PURPOSE: A variable air suction system of automobile is provided to achieve an improved performance of air suction system in a high speed mode of automobile while arranging a blocking member in an air suction pipe having an extended flow channel so as to vary the volume of the flow channel in accordance with the speed of the automobile. CONSTITUTION: A variable air suction system of automobile comprises an air suction pipe(20) communicated with an air suction port(12) of a cylinder head(10) and which has flow channels(80, 82) extended larger than the suction port(12), a blocking member(30) made up of a hollow pipe and which is arranged inside of the suction pipe(20) so as to vary the volume of the channels(80, 82), an operating rod(40) fixed to the blocking member(30) and which has at an end thereof a stopper plate(42), a cylinder(50) for fixing at an inner end thereof the stopper plate(42) of the rod(40), a resilient member(54) arranged between the cylinder(50) and the plate(42) so as to supply the rod(40) with a resilient force, a vacuum tank(60) communicated with the cylinder(50) via a connecting pipe(52), and an electronic control unit(70) for controlling the vacuum tank(60) in accordance with the speed of the automobile.
Patent KR-20000043514-A (KR)
Title: Recordable sound output frame and method of controlling the same
Inventor: HAN GYO TAE
IPC: A47G1/06
Filed: 1998-12-29
Abstract: PURPOSE: A recordable sound output frame is provided to make a user feel friendly more by recording random sounds directly and playing back the sounds. CONSTITUTION: To record sounds necessary to be outputted, electric power is supplied to an input terminal(RSin) of a recording switch(112) from a battery(109) by operating the recording switch. The potential level of the input terminal is reversed into logic high and a sound IC(integrated circuit,108) is converted into a recording mode. The sound IC modulates and saves the input sound signals in a RAM(113) as a user inputs the sounds through a microphone(112). After finishing recording the sounds, the sound IC releases the recording mode and returns to the initial state. The input terminal of the recording switch is turned off and the potential level is changed into logic low if the user does not operate the recording switch. The sound IC checks the potential level of the input terminal to convert the sound signal into a play-back mode if the result is not in a high level.
Patent KR-20000044767-A (KR)
Title: Apparatus for processing caption information of atv
Inventor: KIM JEONG HWAN
IPC: H04N7/015
Filed: 1998-12-30
Abstract: PURPOSE: An apparatus for processing caption information of ATV is provided to remove specific texts which are not educational. CONSTITUTION: An apparatus for processing caption information of ATV(advanced television) according to the present invention includes a caption detector(20), a text extractor(25), a storage(35), a discriminator, and a caption processor(50). The caption detector(20) detects caption information form the video information. The text extractor(25) extracts the caption information on text basis. The storage(35) stores selected text. The discriminator discriminates whether the extracted text is stored in the memory. The caption processor(50) forms a caption screen without the text stored in the memory when the text is stored in the memory, and displays the caption screen.
Patent KR-20000045932-A (KR)
Title: Temperature detecting circuit
Inventor: KIM JI HYUN
IPC: G05F1/00
Filed: 1998-12-30
Abstract: PURPOSE: A temperature detecting circuit is provided to reduce the layout area with the small power consumption by using a simplified current mirror unit and a current mode amplifier. CONSTITUTION: A reference voltage generating circuit(201) generates a reference voltage proportional to temperatures and generates a first current of a magnitude reversely proportional to the change of the reference voltage and a second current of a magnitude proportional to the change of the reference voltage. A current mirror circuit(202) is driven by the first and second currents and generates a single output current having a complementary sign according to the difference of the first and second currents. A current mode amplifier(203) generates the outputs of first and second logic levels.
Patent KR-20000047290-A (KR)
Title: Polyester class dull powder paint composition
Inventor: KANG CHOON KU
IPC: C09D167/00
Filed: 1998-12-31
Abstract: PURPOSE: A polyester class dull powder paint composition is provided which is excellent in leveling, durability and mechanical properties as well as has low brilliance. CONSTITUTION: A powder paint composition contains the following components of: 60-90 wt% of acidic polyester resin and 10-40 wt% of acryl hardening agent with glycidyl group as the main material; 1-5 wt% of general hardening agent for durability with hydroxyl or glycidyl group whose equivalent to 100 wt% of the main material is 70-120; 1-10 wt% of shock reinforcing material which is made from acryl or MBS class, silicone modified class core-shell wherein ultrafine size is 0.1-1.0 micron, glass transition temperature in a core is -30 to -120°C, glass transition temperature in a cell is 70-140°C and rubber content is over 70%; 40-60 wt% of titanium dioxide; and 10-30 wt% of powder matter pigment.
Patent KR-19990028798-A (KR)
Title: 지지된 카르보닐화 촉매
IPC: B01J23/70
Filed: 1996-07-02
Abstract: 본 발명은 주기계의 8족 금속이 탄소 지지체상에 고정된 지지된 촉매에 관한 것으로서, 
     상기 촉매는 지지체가 정상 활성탄보다 더 소수성인 표면을 갖는 활성탄 지지체, 할로겐 원자 및 8족 금속으로 구성된 것을 특징으로 하며, 
     본 발명은 유기 화합물의 카르보닐화 반응, 바람직하게 부타디엔의 펜테노산, 나일론-전구물질로의 카르보닐화 반응내 상기 촉매의 용도에 관한 것이다.
Patent KR-19990067348-A (KR)
Title: 양방향 데이타 장치의 향상된 메세지 프로세싱
IPC: H04W84/02
Filed: 1996-10-07
Abstract: 양방향 데이타 장치(200)에서는 현존 메세지와 동일한 데이타 및 트래킹 식별자를 포함하는 새로운 메세지가 수신되는 경우, 이 새로운 메세지는 현존 메세지의 중복물로 고려된다.  중복 메세지들을 먼저 체크하여 메세지의 데이타 부분이 오류를 포함하는지를 판정한다.  새로운/중복 메세지의 데이타 부분이 오류 체크시 페일되는 경우, 이전 메세지의 데이타 부분은 보유되고, 새로운 메세지의 데이타 부분은 삭제된다.  대안적으로, 새로운/중복 메세지의 데이타 부분이 에러 체크를 패스하고, 새로운 메세지와 현존 메세지 내에 기호 및 응답 플래그가 어떤 기준에 부합될 경우, 이전 메세지의 데이타 부분이 새로운/중복 메세지의 데이타 부분으로 교체된다.  그 결과, 중복 데이타를 반복적으로 저장하지 않아도 되는 것과 같이 메세지 메모리는 보다 효과적으로 이용된다.
Patent KR-19990067571-A (KR)
Title: 왕복펌프
IPC: F04B53/14
Filed: 1997-06-03
Abstract: 특히 차량용 브레이크 장치를 위해 작동유를 송출하기 위한 왕복 펌프에는 펌프실(11) 안에 축방향으로 이동이 가능한 차동 피스톤이 포함되는데, 제작 비용을 절감하기 위해 이 차동 피스톤(12)이 외경이 거의 일정한 실린더(14) 및 실린더 위에서 축방향으로 이동하지 못하도록 고정된 부시(16)로 구성된다. 부시는 대개 실린더(14) 위에 끼워져 있다.  부시(16)에 의해 경계가 지어지는 실린더 부분(141) 위에 끼워지는 탄성 중합체 패킹은 실린더(14)를 펌프실(11)의 벽(111)에 대해 밀폐하고, 펌프실(11)을 용적이 상이한 두 개의 펌프 챔버(21, 22)로 나눈다.
Patent KR-19990071490-A (KR)
Title: 편집시스템,편집방법,클립관리장치,및클립관리방법
IPC: H04N5/262
Filed: 1997-09-19
Abstract: 편집 결과 클립(clip)과 편집될 클립 사이의 관계가 관리 수단에 의해 계층 구조로 관리되므로, 편집 작업이 관리 수단에 저장된 정보를 근거로 실행되면, 복잡한 편집 작업이 쉽게 실행될 수 있다.
Patent KR-19990072180-A (KR)
Title: 메모리시험장치용불량해석메모리
IPC: G11C29/56
Filed: 1997-10-29
Abstract: 불량 데이터 메모리와 제 1 메모리 제어 부분으로 구성된 불량 데이터 저장 부분 및 마스크 데이터 메모리와 제 2 메모리 제어 부분으로 구성된 마스크 데이터 저장 부분을 갖는 메모리 시험 장치용 불량 해석 메모리에 있어서, 시험 장치에  의한 논리 비교 결과가 시험 모드에서 불량이라면, 제 1 메모리 제어 부분은 대응하는 어드레스에서 불량 데이터 메모리의 불량 데이터를 기록하고 기록 가능 데이터를 발생시키기 위해 제어에 영향을 주며, 소거 모드에서, 불량 데이터 메모리로부터 불량 데이터를 판독하기 위한 제어에 영향을 주고 이 불량 데이터를 마스크 데이터 저장 부분에 제공한다. 시험 모드에서 논리 비교되는 것을 금지하기 위해 제 2 메모리 제어 부분은 마스크 데이터 메모리로부터 판독된 마스크 데이터를 금지 신호로서 메모리 시험 장치의 논리 비교기에게 제공하기 위해 제어에 영향을 주며, 소거 모드에서, 제 2 메모리 제어 부분은 불량 데이터로부터 기록 가능 신호를 발생시키기 위해 제어에 영향을 주고 대응하는 어드레스에서 마스크 데이터를 기록하기 위해 이것을 마스크 데이터 메모리에 인가한다.
Patent KR-20000011048-A (KR)
Title: Aerosol and method and apparatus for generating aerosol
Inventor: HOWELL TONY H
IPC: A61M16/00
Filed: 1997-05-15
Abstract: PURPOSE: A method for forming an aerosol by heating a tube containing a material in liquid form and condensing volatilized material is provided which can form the aerosol without a compressed gas propellant. CONSTITUTION: An aerosol is formed by supplying a material in liquid form to a tube(23) having an inner diameter of 0.05-0.53 mm(preferably 0.1 mm) and heating the tube(23) such that the material volatilizes and expands out of an open end(25) of the tube(23). The volatilized material combines with ambient air such that volatilized material condenses to form the aerosol. An apparatus(21) for generating such an aerosol, and a method for generating such an aerosol are also disclosed. The material in liquid form is supplied to the tube(23) at a speed of over 1 mg/sec.
Patent KR-20000051609-A (KR)
Inventor: LIM TAE HOON
IPC: H01M8/06
Filed: 1999-01-23
Abstract: PURPOSE: A device for catalytic process of melting carbonic acid fueled battery and method for manufacturing catalytic agent is provided to improve the capabilities of battery by reducing the sintering of nickel, the reduction of nickel, and enhance hydrogen options. CONSTITUTION: A device for catalytic process of melting carbonic acid fueled battery and method for manufacturing catalytic agent comprises a porosity inorganic body which is in the size of 50 - 400. A series of catalyst revitalization materials are set in the porosity inorganic body. A series of catalyst revitalization materials are made from a primary catalyst agent of nickel and other sets of secondary catalyst agents. Hydrocarbon is supplied to the inside of the fueled battery. Catalyst agents are provided to covert the hydrocarbon and the alcohol into hydrogen.
Patent KR-20000054908-A (KR)
Inventor: KIM TAE WAN
IPC: A01N25/18
Filed: 1999-02-01
Abstract: PURPOSE: A smoking material for a honeybee-raising and a method for the preparation thereof are provided. The smoking material keeps honeybee away from a raiser and prevent him/or her from getting stung by a bee by generating much smoke. The smoking material has no toxicity and is easy to handle. CONSTITUTION: A smoking material comprises 8-12 wt% of mugwort, 8-12 wt% of pine needles to generate the smoke, 5-15 wt% of sap of a tree such as pine resin to increase the amount of the smoke, 40-60 wt% of a coconut peel to neutralize the toxic gas and 15-25 wt% of a submerged rock to increase a combustion efficiency. The preparation method of smoking material is characterized by comprising the steps of grinding followed by pulverizing the mugwort and pine needles.
Patent KR-20000055586-A (KR)
Inventor: SHIN YEONG GON
IPC: B62D5/00
Filed: 1999-02-08
Abstract: PURPOSE: A power steering device of a vehicle is provided to simplify a component, to save a production cost and to improve a response property upon steering. CONSTITUTION: A steering shaft is rotated by a steering manipulation force given to a steering wheel. Steering direction and torque sensors(11,12) respectively send the signals of steering direction and degree to a control unit(13). The control unit controls the rotational direction and amount of a stepping motor(14) based on the signals. As a result, when the stepping motor rotates, a rack bar(16) selectively moves right or left corresponding to the rotation direction of a pinion gear(15). A housing(17) accepting an oil pump(18) is moved by the movement of the rack bar. The volume of inner right and left side oil chambers(20,21) is changed. Further, the amount of action oil let in pressure chambers(4c,4d) of each power cylinder(4) is changed. Thereby, the rack bar moves while a piston(4a) moves by the amount of the action oil so that steering is performed.
Patent KR-20000055710-A (KR)
Inventor: KU BON MUN
IPC: G21D1/00
Filed: 1999-02-09
Abstract: PURPOSE: A condensing desalination method is provided to enhance the reliability of an atomic power plant and reduce the maintenance expenses by lowering the corrosion of the steam generator material. CONSTITUTION: A method controls a molar ratio of positive/negative ions through a mutual neutralization reaction of positive ion impurity leaked from a mixed phase tower and negative ion impurity not eliminated from a positive ion tower, wherein water passes through the positive ion tower of a two-stage processing condensing desolination facilities and through the mixed phase tower and a part of the water not past through the positive ion tower passes through a by-pass line mounted for the part of the water to bypass the mixed phase tower.
Patent KR-20000056476-A (KR)
Inventor: KIM WON JU
IPC: G02F1/133
Filed: 1999-02-22
Abstract: PURPOSE: An electrostatic force protecting circuit for a liquid crystal display device is provided to safely protect the inner circuitry of the liquid crystal display device more safely from static electricity. CONSTITUTION: An electrostatic force protecting circuit for a liquid crystal display device includes a gate line(11), a data line(21), a first shorting bar(10), a first diode(23), a second diode(24), a second shorting bar(20), a third diode and a forth diode. The gate line(11) is formed on the insulation substrate. The data line(21) crosses the gate line. The first shorting bar(10) is formed on the outside of the cross section of the gate and the data lines and crosses the first line. The first diode(23) includes an anode and cathode electrically coupled with the gate line and the first shorting bar, respectively. The second diode(24) includes an anode and cathode electrically coupled with the first shunt member and the first line, respectively. The second shorting bar(20) is formed on the outside of the cross section of the gate and the data lines and crosses the gate line.
Patent KR-19990037935-A (KR)
Title: 유리 용해용 전기로
IPC: C03B5/02
Filed: 1999-02-25
Abstract: 본 발명은 유리를 용융(鎔融)시키기 위한 전기로(電氣爐)에 관한 것으로서, 특히 고품질의 유리제품을 성형할 수 있고 도가니의 교체가 용이하면서도 환경공해를 방지할 수 있도록 한 발명에 관한 것이다. 
     종래에는 도가니를 가열하기 위하여 중유를 연소킴에 따라 상당한 공해물질이 배출되어 대기의 환경을 나쁘게하고, 가마 내부의 열의 분포가 고르게 이루어지지 않는 등의 폐단이 발생되었다. 
     따라서,  본 발명은  단열벽돌(10a) 내측에 내화벽돌(10b)이 적층된 가마(10)의 전면과 하부에는 투시창(11a)을 갖는 개폐문(11)과 배출구(12)가 각각 형성되고, 가마(10) 내부에 보관된 도가니(20)의 주위에는 복수개의 전열선 히터(30)들이 장착된 유리 용해용 전기로를 구성토록 함으로써, 상기 도가니(20)의 주위에서 일정간격으로 배열된 복수개의 전열선 히터(30)에 의하여 도가니(20)가 지속적이고 고르게 가열되므로 열효율이 극대화되어 고품질의 유리제품을 성형할 수 있는 동시에 전력의 사용량을 최소화시킬 수 있고, 도가니(20)의 가열시 공해물질이 전혀 발생되지 않는 것으로서 환경공해의 방지에 크게 기여할 수 있는 등의 이점이 있다.