baber/WOPTO huggingface dataset:
Patent KR-20000040027-A (KR)
Title: E-mail transmission system
Inventor: KIM HEON ROK
IPC: H04L12/58
Filed: 1998-12-14
Abstract: PURPOSE: An E-mail transmission system is provided to transmit an E-mail by using a key phone without an additional computer. CONSTITUTION: An E-mail transmission system comprises an input portion(11), a voice text conversion portion(12), and a connection portion(16). The input portion receives a voice and a text message. The voice conversion portion converts a voice message to a text message. The connection portion connects an internet mail server and the text message. The message generated from the input portion is transmitted through the internet mail server to the internet. The E-mail transmission system further comprises a central control portion(13), a subscriber processing portion(14), and a switching portion(15). The central control portion controls operations of the input portion. The subscriber processing portion transfers an operation status of the input portion to the central control portion. The switching portion connects the input portion and the voice text conversion portion.
Patent KR-19990063184-A (KR)
Title: 소수성 점토의 제조 방법
IPC: C09C3/12
Filed: 1998-12-18
Abstract: 본 발명은 산 및 수-혼화성 용매의 존재하에 점토의 수성 현탁액을 화학식 R 1   a SiX 4-a 의 오가노실란 또는 화학식 R 2   n SiO (4-n)/2 단위를 포함하는 오가노실록산과 반응시켜 소수성 점토를 제조하는 방법에 관한 것이다.  이어서, 생성된 점토 현탁액을 수-비혼화성 용매와 접촉시켜 현탁액으로부터 소수성 점토를 분리한다.
Patent KR-19990024199-A (KR)
Title: 전자부품용 핀 제조장치
IPC: H01F38/42
Filed: 1998-12-18
Abstract: 본 발명은 전자부품용 핀 제조장치에 관한 것으로, 와이어를 일정 길이 단위로 간헐적으로 공급하여주는 와이어공급부, 와이어공급부에 의해 공급되는 와이어를 소정 길이로 절단하고 와이어를 타격하여 필요한 형상으로 성형하는 타격절단성형부, 와이어공급부와 타격절단성형부를 순서대로 동작 시기키 위한 다수의 캠을 갖는 회전축부, 회전축부로 회전동력을 제공하는 동력공급부 및 각부를 정해진 위치에서 지지하여주는 몸체부를 포함하는 구성으로 이루어져 있고, 각종 전자부품용 핀을 필요한 형상으로 용이하게 대량으로 만들 수 있도록 해준다.
Patent KR-20000042626-A (KR)
Title: Device for inserting long hole grout by slot
Inventor: WHANG HAK
IPC: E02D3/12
Filed: 1998-12-26
Abstract: PURPOSE: A device for inserting a long hole grout is provided to prevent an inserting material from being flowed in between an outer circumferential face and a gap, to compensate the difference of a permeation range caused by the inserting pressure by punching part, to easily flow in the inserting material in an inserting tube and to conveniently install a packer. CONSTITUTION: An inserting material is agitated in an agitator, is sent to a supply pipe through a pump, and inserted into a first and a second inserting pipe(140a,140b). The inserting material is sprayed through a slot(142) formed on an outer circumferential face of the inserting pipe. Herein, since the inserting material is properly inserted through the plural inserting pipes, the inserting resistance is inserted without increase. Further, the inserting material is sprayed with the same pressure as one of an upper end even in a lower part of a punched hole so that the difference of permeation range is solved. Since the slot is formed on the outer circumferential face as a multi-cable plane face inserting method, the permeation is improved. Thus, upon working on the weak ground, the stiffness of the ground is increased through a casing by digging in a state of inserting the casing in the punched hole.
Patent KR-20000042776-A (KR)
Title: Method for displaying receiving messages to screen by using more than two different fonts in cellular phone
Inventor: JANG YYUN SEOK
IPC: H04B1/38
Filed: 1998-12-26
Abstract: PURPOSE: A method for displaying receiving messages to a screen by using more than two different fonts in a cellular phone is provided to selectively display many character fonts, according to message lengths displaying to a screen of the cellular phone. CONSTITUTION: A method for displaying receiving messages to a screen in a cellular phone comprises the steps of: checking whether a screen output request is generated; deciding font kinds according to message lengths; and displaying a selected font data to the screen.
Patent KR-20000043152-A (KR)
Title: Circuit for limiting output level of high frequency system
Inventor: YANG JUN SEOK
IPC: H04B7/155
Filed: 1998-12-28
Abstract: PURPOSE: A circuit for limiting output level of high frequency system is provided to prevent internal cell damages and an efficiency depreciation in the high frequency system, by limiting an output when a regular level abnormality is inputted. CONSTITUTION: A circuit for limiting output level of high frequency system comprises amplifiers(10), a connector(20), a detector(30), an automatic level control(ALC) circuit(40), a limit circuit of minimum voltage value(50), and a variable attenuator(60). The amplifiers decide a high frequency profits. The connector is connected with the amplifiers to connect a signal. The detector is connected with the connector to detect the signal. The ALC circuit makes a regular signal output for an input signal having predetermined limits detected through the detector to control the system. The minimum voltage value limit circuit fixes the controlled signal to the minimum voltage value. The variable attenuator moves according to the voltage value generated in the ALC circuit by connecting with the minimum voltage value limit circuit. And the ALC circuit comprises an user interface board(UIA) and an information viewer(UIB) of the operation(OP) amplifiers, the detector, the amplifier, and the variable attenuator.
Patent KR-20000043186-A (KR)
Title: Method for forming overlay pattern of semiconductor device
Inventor: PARK SEONG NAM
IPC: H01L21/027
Filed: 1998-12-28
Abstract: PURPOSE: A method for forming an overlay pattern of a semiconductor device is provided to measure accurately an alignment rate between a photoresist pattern and a lower layer. CONSTITUTION: A method for forming an overlay pattern of a semiconductor device comprises the following steps. A stepped lower layer is provided. A high reflexibility layer is formed on the lower layer. A first photoresist is exposed by using a first reticle. The exposed first photoresist is developed and removed selectively to form a first photoresist pattern. The high reflexibility layer is removed selectively to form a high reflexibility pattern(12a) for exposing an edge portion of an overlay box of the lower layer. The first photoresist pattern is removed. A second photoresist is formed on an exposed surface of a whole structure. The second photoresist is exposed by using a second reticle. The second photoresist is developed and removed selectively to form a second photoresist pattern(15a).
Patent KR-20000043855-A (KR)
Title: Method for fixing spacers of field emission display element
Inventor: JUNG SUNG JAE
IPC: H01J1/30
Filed: 1998-12-29
Abstract: PURPOSE: A method for fixing spacers of a field emission display element is provided to increase adhering force for holding spacers to maintain a uniform distance between upper and lower boards, thereby improve the operational property of the element using a high voltage power supply. CONSTITUTION: A method for fixing spacers of a field emission display element includes the steps of forming an intermediate layer at a predetermined part for forming line type spacers(15) on an upper board(11), forming a hard mask provided with spacer aligning grooves on the board, adhering spacers on the intermediate layer via the spacer aligning grooves of the hard mask to be protruded outside an emission area(13) of the field emission display element, and removing the hard mask and fixing the protruded part with flint glass(17), wherein the intermediate layer is formed with the flint glass.
Patent KR-20000044420-A (KR)
Title: Apparatus for preventing car theft by using cellular phone
Inventor: LEE JAE CHUN
IPC: H04Q9/00
Filed: 1998-12-30
Abstract: PURPOSE: An apparatus for preventing car theft is provided to prevent the car theft by making a car not be started, if an identification(ID) code of a cellular phone is not equal to an ID registered in a car controlling device by applying the cellular phone ID to the car controlling device, when a start up button of the cellular phone is pressed by connecting the cellular phone with the car controlling device using a Curl code or using an infrared communication system. CONSTITUTION: A cellular phone comprises a key input circuit(114), a controller(110), and a first connector(118). The key input circuit generates car start up key signals. The controller controls the cellular phone to deliver identifications(IDs) of the cellular phone and a car controlling device. The first connector connects a cable for delivering the IDs. An apparatus for preventing car theft by using the cellular phone comprises a second connector(120), an executive control unit(ECU)(122), a relay(126), and the car controlling device(128). The second connector is connected with the first connector through the cable. The ECU examines whether an ID code applied from the second connector is equal to a preset ID code. If the two codes are equal, the ECU outputs a relay driving signal. The relay supplies battery power to an engine controller by the relay driving signal. The car controlling device is composed of the engine controller. The engine controller receives the battery power through the relay, and starts an engine according to a control signal of the ECU.
Patent KR-20000045235-A (KR)
Title: Multiplexer
Inventor: CHA HYUNG HUN
IPC: H03K19/00
Filed: 1998-12-30
Abstract: PURPOSE: A multiplexer is provided to prevent a glitch from being generated at an output signal, and to improve the degree of integration by reducing the number of transistors. CONSTITUTION: A multiplexer receives two input signals(A,B) to output either one of the received input signals(A,B) through an output terminal(ZN) in response to a select signal(Sel). The multiplexer comprises four PMOS transistors(21,23,25,27), four NMOS transistors(22,24,26,28) and an inverter(30). The transistors(21,23,24,22) are connected in series between a power terminal(Vdd) and a ground terminal(Vss). The gates of the transistors(21,22) are connected to receive the input signal(A), and the gates of the transistors(23,24) are connected to receive the select signal(Sel). The transistors(25,27,28,26) are connected in series between the power terminal(Vdd) and the ground terminal(Vss). The gates of the transistors(25,26) are connected to receive the input signal(B), and the gates of the transistors(27,28) are connected to receive an inverted version of the select signal(Sel) through the inverter(30). A drain-drain connection node of the transistors(23,24) is connected to the output terminal(ZN), and a drain-drain connection node of the transistor(27,28) is connected to the output terminal(ZN).
Patent KR-19990044124-A (KR)
Title: 금속 산화물 미분을 처리하는 방법
IPC: C22B1/245
Filed: 1996-03-27
Abstract: 본  발명은  강철  밀  폐기물  및  철광석을  포함하는  철-함유  물질(12)로부터  철을  회수하는  방법에  관한다.        본 방법은  철  산화물을  포함하는  금속  산화물을  갖는  철-함유  물질을  탄소함유  물질과  조합하여  건조한  혼합물을  얻는  단계를  포함한다.        상기  건조한  혼합물은  결합제로서  작용하여  건조  혼합물을  결합시키고  녹색  분압체(28)를  형성하는  탄소함유  물질로부터  휘발성  물질을  가동시키기에  충분한  조건하에  응집된다.   이후  상기  녹색  분압체(28)는  분압체가  없는  미리  가열된  로터리  노  용광로(30)에  로딩되어  분압체  높이  약  2  이하의  분압체  층을  형성한다.    상기  분압체를  환원시키고  분압체로부터  의도하지  않는  산화물을  방출시키기  위하여  녹색  분압체(28)는  2150 - 2350 ℉ 의  온도에서  5 - 12 분간  가열된다.        환원된  분압체는  이후  로터리  노  용광로(30)로부터  방출되는데  철  산화물을  99 %  이상  환원시키기  위한  추가의  반응  시간을  제공하기  위하여  담가진다.        금속화된  철  분압체는  이후  냉각되거나  고온상태로  강철  제조  조작으로  이동될  수  있을  것이다.
Patent KR-19990087202-A (KR)
Title: 수직 스위칭 안테나 시스템
IPC: H01Q19/13
Filed: 1997-02-27
Abstract: 본 발명은 VHF/UHF 신호를 스위칭하기 위한 스위칭 회로를 제공한다.  상기 스위칭 회로는 입력 신호를 증폭하는 증폭기와, 증폭된 신호를 출력에 결합하는 스위칭 수단과, 제1 상태의 제어 신호에 응답하여 상기 스위칭 수단이 전도 상태에 있게 하는 동시에 상기 증폭기가 입력 신호를 증폭하도록 인에이블하는 수단과, 제2 상태의 제어 신호에 응답하여 상기 스위칭 수단이 비전도 상태에 있게 하는 동시에 상기 출력으로부터 입력 신호를 더욱 절연시키기 위해 상기 증폭기로부터 DC 동작 전압을 제거하는 수단을 포함한다.
Patent KR-19990087557-A (KR)
IPC: B41M5/395
Filed: 1997-03-07
Abstract: The present invention relates to thermal transfer ribbons comprising a ribbon backing element and at least one printing media layer comprising at least one near infrared fluorescent compound in a concentration which provides detectable fluorescence without imparting color to a mark made from said printing media layer. Methods for printing marks containing said at least one near infrared fluorescent compound via thermal transfer and methods for reading said marks are also disclosed.
Patent KR-20000010647-A (KR)
Title: Device for eliminating twist and plural translation vibration
Inventor: WIEZBAR PAUL
IPC: F16F15/36
Filed: 1997-04-18
Abstract: PURPOSE: An device is provided to eliminate the twist vibration and the plural translation vibrations effectively. CONSTITUTION: A twist vibration and a translation vibration eliminating device(34) is formed by:a ring shaped twist vibration damping weight body(42) located in a ring shaped groove in a housing for being freely rotated during a rotation of the balancing device(34); and a translation vibration compensating weight body(50) stored in the ring shaped groove in the ring shaped twist vibration damping weight body for being freely rotated for reducing the twist vibration.
Patent KR-20000055718-A (KR)
Inventor: KIM JE YEONG
IPC: G06F9/06
Filed: 1999-02-09
Abstract: PURPOSE: A method for codifying digital data file is provided to eliminate any hacking possibilities by creating different codified keys for each data file without using additional code keys by using FAT, codifying and transmitting the file stream to digital data player using these keys, enabling digital player to create codified keys using FAT, and decoding and regenerating file stream, therefore preventing the exposure of codified keys during the transmission even when the data is exposed. CONSTITUTION: A method for codifying digital data file is composed of codification, transmission, decoding, and regeneration. Within the PC(2), digital data player's(3) memory(4), not FAT, is viewed as imaginary disk and depending on its size, key generating algorithm is applied to the digital data file's FAT, which will be codified, and the file is codified and transmitted to digital data player(3). In order to regenerate digital data file, which was codified and stored in digital data player, each file's FAT, which is stored in the memory, is read and the codified key is generated by key generating algorithm, which was used for codification by PC. The generated codified key is used to apply decode algorithm to mp3 file, digital data file is regenerated, and file stream is output as sounds through the decoder(3b).
Patent KR-20000056430-A (KR)
Inventor: CHOI HANG BYEONG
IPC: H01L21/48
Filed: 1999-02-22
Abstract: PURPOSE: Flux cleaner unit for semiconductor manufacturing providing a simple structure, low cost and effectively clean the flux sticked to the semiconductor lead frame. CONSTITUTION: Flux cleaner unit for semiconductor manufacturing comprises a head(12) hanging a holder(15) which fixable a magazine(MZ) received a semiconductor lead frame, is mounted on the upper side of the stand base; the holder(14) is driving by a motor(16), a cleaning tank(10) is placed in direct below of the head(12); The motor(16) is utilizing double winding AC motor having two of excitation coil(L1, L2) for a normal and a reversed rotating rotator(RT), the rotating direction of the AC motor(16) are normal-reverse shifting in a constant period by micro computer(24), a motor controller(20) is control the rotating speed.
Patent KR-20000056538-A (KR)
Inventor: JANG CHEOL UNG
IPC: H04M17/02
Filed: 1999-02-23
Abstract: PURPOSE: A public telephony system using a smart integrated circuit(IC) card is provided to permanently call with the smart ID card and to retransmit update calls and refer to information of banks and stock exchanges in a pay phone, by storing a peculiar telephone number in the smart IC card to pay usage charges for the pay phone afterwards after adding the charges to the peculiar telephone number. CONSTITUTION: A public telephony system using a smart integrated circuit(IC) card comprises the smart IC card(10), a pay phone(20), and a terminal computer(30). The smart IC card records various information including peculiar telephone numbers. The pay phone supplies power to an IC of the smart card to operate the card, and reads the recorded information of the card. The terminal computer decides whether the smart card is used by the recorded information, and turns on a line of the pay phone according to a decided value. The terminal computer controls the system to return the smart card.
Patent KR-20000056905-A (KR)
Inventor: RYU JE HA
IPC: G01M17/007
Filed: 1999-02-27
Abstract: PURPOSE: A HILS system for testing an electric power steering system is provided to reduce product development period and manufacturing cost by verifying the performance of the electric power steering system and increase the testing efficiency by carrying out repeated testing and preventing danger of a testing person. CONSTITUTION: A HILS system for testing an electric power steering system includes a hardware part for forming a steering part including a steering wheel(10), a steering column, a rack(11), a pinion(12), a motor, an ECU(Electronic Control Unit), and sensor, a real time simulation software part forming a tie rod(20), a steering linkage, chassis and tires by using a DSP(Digital Signal Processor)(20A), and a displacement sensor(LVDT) and an actuator(60) for connecting the hardware part with the software part, wherein the displacement sensor measures the displacement of the rack and the actuator realizes the force computed in the software part.
Patent KR-19990077674-A (KR)
Title: 테이프 형상 광 화이버 심선 집합장치 및 집합방법
IPC: G02B6/44
Filed: 1999-03-08
Abstract: 본 발명은, 테이프 형상 광 화이버 심선을 스페이서의 홈에 적층하여 수용하는 경우의 적층상태를 개선한 집합장치와 집합방법을 제공하는 것으로서, 스페이서(6)의 외주면에 설치되어진 나선형상의 복수의 각 홈내에 테이프 형상 광 화이버 심선을 적층하여 수용하는데 있어서, 스페이서(6)를 축심 주위로 회전시키면서 직선형상으로 진행시키는 장치, 예를들면 장력부여 장치(8)와 인취장치(11)와, 복수의 테이프 형상 광 화이버 심선(1)을 내보내는 장치와, 테이프 형상 광 화이버 심선(1)을 나선형상의 각 홈에 안내하는 가이드 다이스(5)와, 가이드 다이스(5)의 앞에 배치된 배열 유지용 가이드(4)를 구비한 장치로서 배열 유지용 가이드(4)에는 구형단면의 구멍(4c)을 설치하여 그 구멍(4c)에 적층한 테이프 형상 광 화이버 심선(1)을 통과시키는 것에 의해 테이프 형상 광 화이버 심선(1)의 적층상태를 유지하여 적층체로서 상기 적층체를 가이드 다이스(5)에 의해 스페이서(6)의 홈으로 안내하여 삽입한다.
Patent KR-19990077753-A (KR)
IPC: G10L19/02
Filed: 1999-03-10
Abstract: 종래 방식의 고정 스케일러블 코딩에서는, 저역, 중역, 고역의 각 대역양자화기가 고정되어 있기 때문에, 원 오디오 신호의 분포에 의해 양자화 오차를 될 수 있는 한 적게 하도록 부호화하는 것이 곤란하였다.  그러므로, 다종, 다양한 성질이나 분포를 갖는 오디오 신호의 부호화를 실행할 때에는, 충분한 성능을 발휘할 수 없어, 고음질이고, 고효율인 스케일러블 코딩을 실행하는 것이 곤란하였다.  그래서, 다종 다양한 오디오 신호의 부호화를 실행할 때에, 충분한 성능을 발휘하도록 적응적으로 스케일러블 코딩하는 오디오 신호 부호화, 복호화 장치를 제공한다. 
     본 발명은, 고정 스케일러블 코딩 수단을 이용하지 않고, 원 오디오 신호의 성질·분포를 자동적으로 판정하여, 부호화하는 주파수 범위를 변화시키는 적응 스케일러블 코딩 수단을 구비하였다.
Patent KR-20000060863-A (KR)
Inventor: JANG IK GYU
IPC: G09G3/36
Filed: 1999-03-20
Abstract: PURPOSE: A source signal output control circuit of source drive integrated circuit of an LCD is provided to reduce the number of pins and the number of wirings by generating a control signal for a source signal output by using a horizontal clock signal. CONSTITUTION: A source drive IC generates a source signal for driving an LCD panel for displaying a predetermined screen by receiving a data signal, a gray voltage, and a control signal. The source drive IC includes a diode(D), a smoothing circuit(R,C), and an inverter(IN). The diode half-rectifies a horizontal clock signal included in the control signal. The smoothing circuit smoothes a half-rectified signal. The inverter inverts the smoothed signal, and outputs it as a driving control signal. Thereby, the source drive IC controls an output signal of the source signal according to a level of the driving control signal.
Patent KR-19990064573-A (KR)
Title: 내용물 유출용 배출대를 포함하고 있는 액체충 전용기
Filed: 1999-04-07
Abstract: (1)발명이 속한 기술분야 
     내용물 유출용 배출대를 포함하고 있는 액체충전용기 
     (2)발명의 목적 
     종래의 배출대는 일측에 구멍이 형성되어 있는 형식을 하고 있는 바,그 성형제작이 용이치 못한 단점이 있음은 물론,배출대의 구경이 적을 겨우 그 구멍을 형성하기란 매우 어려워 배출대의 가격 상승을 유발한 단점 등등이 있으나,본 발명은 이상의 제반결함을 해결하여 그 난점을 극복함을 목적으로 한다. 
     (3)발명의 구성 
     배출대(102)는,상방으로는 구멍(105)을 갖고 있는 흡입부(104)를 두고, 하방으로는 일측이 개방되거나 본체(100)가 맞닿았을 때 공간이 확보되는 형의 유도부(106)를 둔 것이며,또한 상기 마개(103)를 중심으로 형성된 공간의 그 외곽과 동일 선상의 각 단부는 봉합부(107)로 형성하되,상기 마개(103)가 있는 공간의 그 하측은 양측과 연결되어진 형의 봉합부(107' )를 형성한 것이다. 
     (4)발명의 효과 
     일측이 개방된 형의 배출대는,내용물을 빨아 먹는 것과 내용물을 다른 용기에 옮기는 것이 일시에 해결되는 특징의 액체충전용기에 관한 것이다.
Patent KR-20000073442-A (KR)
Inventor: CHO HYOUNG KU
Filed: 1999-05-11
Abstract: PURPOSE: A scheduling method for scheduler that links with wireless communication device is provided to inform the user of one's schedules by enabling the user to input the schedules in the computer and to confirm the schedule information through wireless communication devices, such as cellular phones and pagers. CONSTITUTION: If a user is a registered member, the user's ID and password is inputted. The inputted ID and password are compared to the personal detailed information table and the group detailed information table contents. If the inputted ID is a personal ID, the personal schedule process is executed. If the inputted ID is a group ID, the group schedule process is executed. If not a registered member, the user is determined to be an individual or a group. If an individual, the data is inputted in the personal detail information table. If a group, the data is inputted in the group detail information table. The user can input and store data, and add, delete, and correct one's schedule. The user can also perform these functions through the internet.
Patent KR-19990088271-A (KR)
Title: 힌지조립체
IPC: F16C11/04
Filed: 1999-05-13
Abstract: 무선 통신기구(100)용 힌지 조립체(2800)는 본체(104)와 자체에 일체적으로 성형된 배럴(216)을 갖는 커버(102)를 포함한다.  힌지 조립체는 종동부(2802), 종동부(2802)와 결합된 캠(2804), 캠(2804)에 결합되고 종동부(2802) 세그먼트 주위에 권취된 스프링(2804)을 포함한다.  힌지 부품은 무선 통신기기 제조와는 별도로 완전 조립되어 자체적으로 완비될 수 있다.
Patent KR-20010002058-A (KR)
Inventor: IN WANG GI
IPC: G21C3/356
Filed: 1999-06-11
Abstract: PURPOSE: A nuclear fuel assembly supporting lattice structure having gourd type composite blades is provided to actively generate a powerful rotary flow of a coolant. CONSTITUTION: A nuclear fuel assembly supporting lattice structure(10) includes lattice plates which are coupled with each other for supporting a nuclear fuel rod(25). The lattice plates have slots longitudinally by which the plates are coupled to form a lattice shape. Gourd type composite blades(22) are protrudingly formed on the bottom and top portions of the supporting lattice by two, respectively. The composite blades(22) formed on the bottom or top portion of the lattice are arranged alternately. The composite blades(22) rotate smoothly the coolant flowing upward so as to generate a rotary flow at an upper intersecting point. The composite blades(22) also function as springs for supporting the nuclear fuel rod(25).
Patent KR-20010003860-A (KR)
Title: Method for driving motor
Inventor: LEE JU HWAN
IPC: H02P1/16
Filed: 1999-06-25
Abstract: PURPOSE: A method for driving a motor is provided to reduce the noise and vibration of a motor by reducing the ripple effect of the motor torque in a low frequency band. CONSTITUTION: A method for driving a motor comprises the step of detecting a zero crossing point of a reverse electromotive force of a DC motor. After detecting the zero crossing point of the reverse electromotive force of the DC motor, a pulse width modulation voltage having a predetermined duty ration is applied to a stator. After applying the pulse width modulation voltage for a predetermined time, a DC voltage is applied to the stator. The pulse width modulation voltage is applied to the stator after a rotor of the motor is rotated by 3 to 4 degrees. The pulse width modulation voltage is applied to the stator until the rotor of the motor is rotated by 70 degrees.