baber/WOPTO huggingface dataset:
Patent KR-19990076660-A (KR)
Title: 정전식 확성기
IPC: H04R19/02
Filed: 1996-12-17
Abstract: 본 발명은 막과 스테이터가 동일한 극성의 전하를 갖는 정전식 확성기에 관한 것이다.  여기서는 스테이터와 막 사이의 스파클링을 일으킬 위험 없이 확성기에서 큰 힘이 동작하는 것이 가능하다.  본 발명에 따른 확성기는 2개의 막(19, 20)을 포함하며, 이들 막 각각은 전기적으로 전도성 물질로 이루어진 그리드 등의 형상으로 된 대응하는 스테이터(2, 9)를 포함한다.  2개의 막은 서로간에 평행하며, 굳은, 견고한 또는 단단한 물질(6)에 의해 함께 결합된다.  쌍의 막(19, 20)과 스테이터(2, 9)는 항상 동일한 전위를 갖으며, 전위가 변화할 때 변화하는 힘으로 서로간에 반발된다.
Patent KR-19990082188-A (KR)
Title: 복층유리 및 그 제조방법
IPC: E06B3/663
Filed: 1997-01-27
Abstract: 본 발명은 한 쌍의 유리판을 그 주변부에 스페이서를 개재시킨 상태로 서로 두께 방향으로 떨어지도록 배설되는 복층유리 및 그 제조방법에 관한 것이다.  종래, 이 종류의 복층유리는 한 쌍의 유리판 사이의 주변부에 건조제를 봉입한 1차 실런트와, 이 1차 실런트의 외주에 2차 실런트를 배설한 듀얼실 타입의 것이 가장 널리 보급되어 있으나, 2차 실런트는 경화반응이 진행함에 따라 탄성이나 유리와의 접착강도가 생기고, 양생하는 시간이 필요하여, 이 때문에 제조후 최소 수시간동안 출하할 수 없다고 하는 문제가 있었다. 
     본 발명은 한 쌍의 유리판(3, 3)이 그 주변부에 스페이서(1)를 개재시킨 상태에서 서로 두께방향으로 떨어지도록 배설되고, 상기 한 쌍의 유리판(3, 3)과 상기 스페이서(1)가 각각 접착수단을 통하여 접착되고, 상기 한 쌍의 유리판(3, 3)과 상기 스페이서(1)가 고주파가열수단에 의해 접착되어 있으므로, 제조공정을 간략히 할 수 있고, 접착시간이 단축되어, 제조직후에 출하하는 것이 가능하고, 저비용의 복층유리를 제공할 수 있다.
Patent KR-20000051929-A (KR)
Inventor: AHN CHANG KI
IPC: B28B3/00
Filed: 1999-01-28
Abstract: PURPOSE: A method for preparing polymer concrete wash board is provided which has properly rough surface to improve cleaning strength. The wash board has excellent water-resistance, drug-resistance, tensile strength, flexible strength and compressibility strength. CONSTITUTION: A method for preparing polymer concrete wash board comprises; coating the polymer coating solution containing 100 pts.wt. of polyester resin, 3-7 pts.wt. of hardening agent and 0.3-0.7 pts.wt. of hardening promotion agent on surface of inside metal form; pouring polymer concrete composition containing 100 pts.wt. of polyester resin, 230-270 pts.wt. of fine aggregate and 3-7 pts.wt. of hardening agent into metal form and curing.
Patent KR-20000052004-A (KR)
Inventor: KIM YOUNG HO
IPC: F16H39/00
Filed: 1999-01-28
Abstract: PURPOSE: A continuously variable transmission is provided to shift gears smoothly without stepping, so that the shock of an engine is reduced CONSTITUTION: A continuously variable transmission is completely closed containing a hydraulic pump and a hydraulic motor and comprises an input shaft (14) connecting with a power source and an output shaft (15) transmitting a shifted power, where one (5) of both operating push in the hydraulic pump is freely movable to the shaft direction and the other (6) is rotatable
Patent KR-20000055746-A (KR)
Inventor: CHANG SUNG JIN
IPC: C10C5/00
Filed: 1999-02-02
Abstract: PURPOSE: Bio extracts medicinal vinegar from smoke of oak charcoal with antibiotic property and far infrared rays is provided. Especially, it is applied to its use as a liquid-type so that it can be used for wide range of industries such as healthy articles. CONSTITUTION: Bio extracts medicinal vinegar from smoke of oak charcoal has 0.87 micro meter of emission rate, 3.50x10¬2W/m¬2 xmicro meter x40°C of energy, pH 2.5-pH 3.2, 9-13 Brix, and 1.01-1.05 specific gravity.
Patent KR-20000059954-A (KR)
Inventor: KIM GYEONG TAE
IPC: A23B7/10
Filed: 1999-03-10
Abstract: PURPOSE: A method for controlling the operation of Kimchi refrigerator is provided, to prevent the under-maturation of Kimchi due to the delay of elevating of Kimchi temperature when it is operated in the maturation mode. CONSTITUTION: The maturation is operated at the temperature selected by a user, wherein the method comprises the initial maturation operation step which carries maturation at the higher temperature than the maturation temperature for the predetermined initial time. Preferably the initial maturation operation step comprises the steps of: carrying out the first-stage maturation operation at the higher temperature than the maturation temperature selected by a user when the maturation operation starts; checking the delayed time; and carrying out the second-state maturation operation at the maturation temperature when the time exceeds the predetermined time.
Patent KR-20000060164-A (KR)
Inventor: SIM DONG SU
IPC: H02H9/00
Filed: 1999-03-12
Abstract: PURPOSE: A hot wire bed control circuit for prevention of a surge power is provided to prevent parts within a circuit from breakdown when excessive surge power is impressed. CONSTITUTION: A protecting capacitor(C1) is installed in a position to be impressed first from a source voltage(VDD), and is connected to the source voltage(VDD) in an end, and to a ground terminal in the other end. An anode of the Diode(D1) is connected to the source voltage(VDD) and a cathode is connected to an end of the resistance(R1). A comparator(COM1) has an inverting input connected to the other end of the resistance(R1), and a non-inverting terminal connected to an other end of the capacitor(C1) connected to an output terminal. A temperature protecting section(500) includes: resistances(R7,R4,R5,R6) connected to an output of the comparator(C1); a reference voltage(VR) and a resistance(R3) serially connected to the resistance(R7); a switch(SW) between a ground terminal and the resistance(R3); a resistance(R2) connected to both ends of the reference voltage(VR); comparators(COM2,COM3,COM4) having a non-inverting terminal connected to a variable resistance(VR); thermistor resistances(Rth1,Rth2,Rth3); a capacitor(C2) connected to the non-inverting terminal; a resistance(R8) connected to an output terminal of the comparators(COM2,COM3,COM4); a capacitor(C3) connected between the other end of the resistance(R8) and an operating voltage input terminal; a transistor(Q1) having a base connected the other end of the resistance(R8); a resistance(R9) connected between an emitter of the transistor(Q1) and the other end of the resistance(R8), and a diode(D2) having an anode connected to the contact point of the emitter and a cathode connected to a ground terminal.
Patent KR-20000060564-A (KR)
Title: 일괄타설 스테이앵커
Filed: 1999-03-17
Abstract: 스테이앵커의 타설에 있어서, 버려지게 되는 종래의 심판에 의한 확개수단이 불필요하고, 또 저항판의 확개 타설에 있어서 중대한 장해가 되는 외측봉이 불필요하는등, 전반적인 구조의 간소화 및 저렴화를 도모함과 동시에 타설작업을 간소화하도록 한 일괄타설 스테이앵커를 제공한다. 
     확개판체(B)의 양측의 리브(5,5)사이에 상인판체(A)의 상인판(2)을 삽입하여 기판(1)상에 정치한 상태에서 상인판(2)을 총합 파이프체에 삽입하고, 그 총합파이프체(12)가 확개판체(B)상에 정치된 위치에서 서로 합치하는 상인판(2)의 결합구멍과 총합파이프체(12)의 하부규정구멍(12a)에 핀(13)을 관통삽입시킴으로서 상인판체(A)와 총합파이프체(12)를 걸어맞춤 일체화하고, 이 상태에서 총합파이프체(12)를 가격하여 땅속에 직진타설하고 소정심도에 도달한 위치에서 핀(13)을 뽑아냄으로서 총합파이프체(12)와 상인판체(A)와의 걸어맞춤을 풀고, 더욱이 총합파이프체(12)를 가격함으로서 확개판체(B)의 양쪽의 저항판(4,4)을 기판(1)의 경사변을 따라 곡진하면서 확개시키고, 상인판체(A)의 결합구멍과 총합파이프체(12)의 상부 규정구멍(12b)이 일치한 시점에서 이들 구멍에 핀(13)을 관통삽입함으로서, 재차 총합 파이프체(12)와 상인판체(A)를 결합하여 상인하중 태세로 하였다.
Patent KR-20000061425-A (KR)
Inventor: LEE DAE HOON
IPC: C08B30/00
Filed: 1999-03-26
Abstract: PURPOSE: A starch-foaming agent which has environment affinity and a method for producing products such as mat or packing material with the use of the foaming agent are provided. CONSTITUTION: The starch-foaming agent comprises starch 100Wt parts, polyvinyl alcohol 10-40Wt parts, calcium carbonate 1-5Wt parts, glycerine 1-3Wt parts; and the method includes the steps of; extruding the starch-foaming composition into long fibre foam product; forming a lamination layer on the surface of the foam product with water being in contact; pressing the laminated foam product into a plate form mat; forming the mat into the desired form.
Patent KR-19990083501-A (KR)
IPC: G03F7/32
Filed: 1999-04-27
Abstract: The developing solutions contain an anti-scum agent and an ethoxylated surfactant. An aqueous alkaline developing solution comprising 0.1-3.0 wt.% of a base and 0.05-1.0 wt.% of an alkylene oxide surfactant of formula (1) or surfactant mixture. [R-O(AO)n]m-X (1) AO : alkylene oxide units from ethylene oxide units (CH2-CH2-O) or (CH2-CH(CH3)-O); R : a hydrophobic group; X : H or an anionic group; m : 1-3; and n : at least 8. The molar ratio of total ethylene oxide units to total propylene oxide units is 1:4 to 4:1. An independent claim is also included for a method of preparing a patterned photoresist on a substrate comprising: (i) providing a layer of photoresist comprising an acid functional binder polymer and photopolymerizable compounds to a substrate; (ii) exposing the layer to patterned actinic radiation; and (iii) developing the photoresist layer in the above developing solution.
Patent KR-20000067430-A (KR)
Inventor: PARK GWANG JIN
IPC: H04L12/24
Filed: 1999-04-28
Abstract: PURPOSE: A method for collecting system load status monitoring and alarming data using a common memory is provided to monitor the load status of a system in real time and to generate alarms using a common memory between a processor collecting system resource information and a processor generating alarm data. CONSTITUTION: A system resource information collection processor reads the alarm grade thresholds of system load status in a specific file of a common memory. The processor drives a timer and obtains system resource information by periodical system calling. The processor records the system resource information in the common memory periodically and compares it with load alarm grade conditions to monitor system load status. As a result, if the system resource information is more than an associated load alarm grade threshold, the processor records the load alarm grade in the common memory. A graphic operator interface function processor accesses the common memory periodically and provides system information and load alarm grades to the operator in real time.
Patent KR-20000073900-A (KR)
Inventor: MOON DONG SOK
IPC: B61L23/00
Filed: 1999-05-15
Abstract: PURPOSE: A train approach alarming apparatus is provided to prevent safe accident owing to a train previously by informing a line worker and a round checker that a train approaches, by wireless. CONSTITUTION: A train approach alarming apparatus comprises a transmitter(150) which sends alarm data for alarming train approach as a wireless signal. A reception part(160) receives the sent alarm data. A data setting part(110) stores predetermined alarm data according to each function. A control part(110) sends the alarm data through the transmitter(150) using data set in the data setting part(110) according to a function selection of a function select operation part(120). The control part(110) parses the alarm data received through the reception part(160) to generate corresponding response data or a corresponding alarm. The sensitivity of the transmitter(150) and the reception part(160) is controlled by the control part(110). An alarm part(170) generates a train approach alarm according to the control of the control part(110).
Patent KR-19990088384-A (KR)
Title: 서셉터
IPC: H01L21/683
Filed: 1999-05-19
Abstract: 본 발명은 면형 전열층과 이것을 지지하는 지지관 등을 구비하는 서셉터에 있어서, 면형 전열층의 가열면에서의 온도 분포를 작게 하는 것을 과제로 한다. 
     서셉터(1A)는 면형 전열층(3A)과, 면형 전열층(3A)을 배면(4b) 쪽에서 지지하는 지지 부재(12)와, 제1 열 차폐부(7A)와, 제2 열 차폐부(25A)를 구비하고 있다.  면형 전열층(3A)은 피가열체(2)를 가열하는 가열면(4a)과, 배면(4b)을 구비하고 있다.  제1 열 차폐부(7A)는 면형 전열층(3A)의 배면(4b)과 지지 부재(12) 사이에 설치되어 있고, 면형 전열층의 배면으로부터 지지 부재를 향한 열류를 제한한다.  제2 열 차폐부(25A)는 제1 열 차폐부(7A)와 지지 부재(12) 사이에 설치되어 있고, 제1 열 차폐부로부터 지지 부재로의 열류를 제한한다.
Patent KR-20010001484-A (KR)
Inventor: KIM MOON SUP
IPC: H04R9/00
Filed: 1999-06-04
Abstract: PURPOSE: A speaker unit and a speaker system for generating negative ions are provided to generate simultaneously negative ions and sound waves. CONSTITUTION: A speaker unit and a speaker system for generating negative ions comprise the following structure. The speaker unit(10) comprises a negative ion generator for outputting a sound wave vibrated from a speaker cone and negative ions to the outside by receiving a part of audio signal from an audio input line(1) for inputting an audio signal to a speaker unit and generating negative ions. The speaker system comprises the speaker unit and the negative ion generator. The negative ion generator comprises a negative ion generating circuit(9). The negative ion generating circuit is installed at a rear portion of the speaker unit.
Patent KR-19990073172-A (KR)
Title: 슬러지의탈취및건조방법과그장치
IPC: C02F11/12
Filed: 1999-06-16
Abstract: 본 발명은 각종 산업현장에서 발생하는 슬러지를 효과적으로 이용하기 위해서 60 내지 90℃의 저온에서 0.1 내지 200 토르의 진공 분위기 하에서 건조하고, 발생된 수분 및 악취가스를 냉각탑에서 탈취 및 분리하고, 탈취 및 건조 처리된 슬러지를 반출하여 포장이 가능하게 하는 슬러지의 탈취 및 건조 방법과 이 방법에 적용하기에 적합한 장치를 제공하기 위한 것이다. 
     본 발명의 방법 및 장치를 이용해서 처리된 슬러지는 3000 내지 6000 Kcal/㎏의 열량을 갖고 있다. 이 건조 처리된 슬러지를 화력발전소 등의 산업용 연료로 사용 가능하고 특히, 시멘트 공장에서는 시멘트 제조용 연료로 사용한 뒤 타고남은 재는 시멘트 원료로 사용할 수 있는 획기적인 발명이며, 또한 축산폐수 슬러지를 건조 처리한 슬러지는 많은 유기물을 함유하고 있어 유기농업용 퇴비로도 사용할 수 있다.
Patent KR-20010004084-A (KR)
Inventor: KIM YANG GYEONG
IPC: H05B6/74
Filed: 1999-06-28
Abstract: PURPOSE: A heating device of a microwave oven is provided to make a user to cook conveniently by having a convective cooking function and a grilled cooking function and to make a user to effectively cook using convective heat and radiant heat by generating plasma during a grill-cooking. CONSTITUTION: A heating device of a microwave oven includes a waveguide(4) mounted on an upper portion inside a cavity(2) and communicated with fluid paths(4a,4b) for transferring microwave generated from a magnetron(3) into the cavity, a path blocking member(5) hinged at a border of the fluid path in the waveguide and rotated by a control of a controller to selectively supply microwave into the cavity through the fluid path according to a convective cooking or a grilled cooking, a driving motor(10) mounted on an inside and upper center of the cavity and driven during cooking, a fan(12) mounted on a motor shaft(11) of the driving motor and rotating to supply air into the cavity, and heating means heating foods at a high temperature and irradiating beam of light.
Patent KR-20010004143-A (KR)
Inventor: LEE HUI YEONG
IPC: H04N7/08
Filed: 1999-06-28
Abstract: PURPOSE: A method for selecting broadcasting signal is provided to distinguish a data channel and a program channel conveniently by adding a function relating to a data service to an electronic program guide and providing information relating to the data service for a user. CONSTITUTION: The method for selecting broadcasting signal includes following processes. First, a user turns on a television set and selects the electronic program guide service(3-1). When the user selects the electronic program guide, time/channel information is displayed(3-2). Thereafter, a process is to discriminate whether the data service broadcasting among the displayed electronic program guide services is selected or not and then the data service broadcasting is selected(3-3,3-4). When the data service broadcasting is selected, an application list constructing the data service as a sub screen is displayed(3-5). When a desired application from an application list is selected, a control unit changes the application like a channel change and provides the changed application to the user(3-6,3-7).
Patent KR-20000011540-A (KR)
Inventor: AGE TOYOTA
IPC: H01L21/302
Filed: 1999-07-07
Abstract: PURPOSE: The exfoliating method is provided to remove corrosion-resisting membrane material from objective material using a pressure sensitive attachment sheet. CONSTITUTION: The exfoliating method of a corrosion-resisting membrane material has the steps of: applying the pressure sensitive attachment sheet on the upper surface of the corrosion-resisting membrane material exists on the objective material; exfoliating the pressure sensitive attachment sheet with the corrosion-resisting membrane material to remove the corrosion-resisting membrane material from the objective material; cooling the pressure sensitive attachment sheet with the corrosion-resisting membrane material and the objective material under 0 degree or cooling the pressure sensitive attachment sheet with the corrosion-resisting membrane material and the objective material at a room temperature after heating the pressure sensitive attachment sheet to have more than 100 degree to increase the exfoliating effect.
Patent KR-20010018701-A (KR)
Inventor: JEON HONG GUN
IPC: E04B1/68
Filed: 1999-08-21
Abstract: PURPOSE: A joint bar for a contraction joint of a concrete structure and the joint bar constructing method are provided to reduce the process and a term of construction works as well as construction expenses by forming a contraction joint simultaneous with sealing of a joint bar when molding a concrete structure and to seal a joint bar finely and simply. CONSTITUTION: A constructing method of a joint bar for a contraction joint of a concrete structure comprises the steps of; forming a joint bar by solidifying silicon in a gel state using a form (30) of a corresponding shape to a contraction joint formed on a concrete structure; forming an anchor frame (20), which is buried in a concrete layer and provides fastening force, on both contact surfaces of the joint bar in one with the joint bar; forming an anchor groove (22) which provides fastening force to an anchor frame projection part (21) of the anchor frame (20) projected to the outside of the joint bar and buried in a concrete layer, and an anchor frame embedded part (23) in the joint bar; after supporting the joint bar on an appointed location of a mold form for forming a structure, then concreting to the mold form; after curing and hardening the concrete surface, completing the forming of a contraction joint and the sealing of a joint member simultaneously by removing the mold form.
Patent KR-20010026292-A (KR)
Inventor: YANG SEONG RYEOL
IPC: B60R25/30
Filed: 1999-09-04
Abstract: PURPOSE: A method for interfering drive of stolen vehicle is provided to interfere with traveling in starting of the vehicle and driving by the instrument except for a transponder. CONSTITUTION: A starting switch is turned on, and the serial number and the response from a transponder(10) are detected. The state remains at the right condition, and a fuel pump module(28) stops supplying fuel and starting the engine with an immobilizer ECU(Electronic Control Unit)(22) applying the start inhibition command to an engine ECU in starting by the instrument except for the transponder. The vehicle travel interference unit is operated on traveling by the engine operation and on detecting driving by the thief in spite of stopping the engine from starting. The stolen vehicle alarm prevents the theft of the vehicle and helps to recover the stolen vehicle.
Patent KR-20000062127-A (KR)
Title: 착용자 손의 자세와 그 보호를 위해 덧댄 장갑
IPC: A41D19/015
Filed: 1999-09-10
Abstract: 본 발명은 정중신경과 척골신경의 통로에 해부학적으로 충격을 완화시킴으로써 착용자 손의 향상된 위치와 보호를 제공하도록 된 덧댄 장갑에 관한 것으로, 이는 정중신경과 척골신경의 위에 위치된 완충부에 두꺼운 두께의 패드를 덧댐과 더불어, 자전거를 타는 동안 손의 위치를 바꾸어 상기 신경들의 긴장을 감소시키는 한편, 봉형태의 손잡이에 대한 손의 중앙부위의 충격을 완화시키도록 되어 있다.
Patent KR-20010027430-A (KR)
Inventor: HYUN JANG SOO
IPC: F23C13/00
Filed: 1999-09-13
Abstract: PURPOSE: A combustor to which an oxidation catalyst is supplied is provided to accomplish the complete combustion of an incompletely burned material moving in a combustion chamber of the combustor and the perfect pyrolysis of a toxic substance. CONSTITUTION: A combustor is comprised of a combustion chamber former; an oxidation catalyst pressurizer(2) positioning outside the combustion chamber former; an oxidation catalyst distribution case former to which the pressurized oxidation catalyst is let in; and an oxidation catalyst supplier(4) for supplying the pressurized oxidation catalyst to an inner part of the combustion chamber former. Only the pressurized brown gas in the distribution case former is supplied. Otherwise, the pressurized brown gas is supplied to a combustion chamber through a supplier independently or with other pressurized oxidation catalysts. Thereby, the complete combustion and the pyrolysis of a toxic substance are accomplished.
Patent KR-20010027451-A (KR)
Inventor: LEE CHUNG SU
IPC: H04M3/22
Filed: 1999-09-14
Abstract: PURPOSE: A function test method for an exchange system is provided to utilize resources effectively and allow AFT(Auto Function Test) program to be quickly upgraded by incorporating the AFT program in the online program of a system and managing them in one task, after finishing producing the private exchange system such as key-phone system and PBX(Private Branch Exchange). CONSTITUTION: An AFT program according to the invention is incorporated in the online program and managed in one program(S100). Only when a hardware and software in the exchange system are initialized, the incorporated program performs backup after diagnosing and testing items which can be tested in AFT program(S110). If the I/O port in the corresponding exchange system is set to the default value(S120), a normal service is preformed(S130). If the above I/O port is set to AFT(S140), the corresponding AFT test is performed by being input AFT test command(S150). When a test is performed by AFT command in the S150, its response result is notified through the above I/O port(S160). Then, a PC sending/receiving environment is set, and the above response result is displayed on a PC(S170).
Patent KR-20010027730-A (KR)
Inventor: SUN DONG GU
IPC: B62D25/20
Filed: 1999-09-15
Abstract: PURPOSE: A transmission checking cover support member is simplified in composition and composed to be generally used in the same vehicle classes of buses. CONSTITUTION: A support member comprises a supporting member(3), a frame(4) and a sealer. The supporting member(3) is of square ring shape and has a checking window(1) to check a transmission through on the central part thereof and a placing part(2) plane so that a checking cover is placed in with multiple bolt holes(7) formed so that bolts penetrating the checking cover are engaged with screw around the checking window(1). The frame(4) is placed on both sides of the supporting member(3) and welded to the upper surface of some parts of the placing part(2) with a floor fixed. The sealer is installed on an inner side end part of the upper end of the supporting member(3) and adhered to the checking cover to seal hermetically between the supporting member(3) and the checking cover.
Patent KR-20010028128-A (KR)
Inventor: CHUN JI YEONG
IPC: H03F1/38
Filed: 1999-09-17
Abstract: PURPOSE: A device for controlling the reverse of double right direction of a linear power amplifier is provided to remove the interference of the additional mutual modulation, which is generated in case that the level of the output is high and the volume of a linear power amplifier is low. CONSTITUTION: A device for controlling the reverse of double right direction of a linear power amplifier includes a detecting portion(51) of a circuit for controlling the reverse of the first right direction, a controlling portion(52) of a circuit for controlling the reverse of the first right direction, a detecting portion(53) of a circuit for controlling the reverse of the second right direction and a controlling portion(54) of a circuit for controlling the reverse of the second right direction. The detecting portion(51) of a circuit for controlling the reverse of the first right direction carries out delaying and controlling the phase and diminishing in order that the signal of CDMA mode detects the error signal by the interference of the mutual modulation generated through the main amplifier. The controlling portion(52) of a circuit for controlling the reverse of the first right direction carries out delaying and controlling the phase and diminishing to remove the interference of the mutual modulation by using the error signal detected in the detecting portion of the detecting portion(51) of the circuit for controlling the reverse of the first right direction. The detecting portion(53) of a circuit for controlling the reverse of the second right direction carries out delaying and controlling the phase and diminishing to detect the error signal by the interference of the mutual modulation generated by the amplification of the controlling portion of the detecting portion(51) of the circuit for controlling the reverse of the first right direction. The controlling portion(54) of a circuit for controlling the reverse of the second right direction carries out delaying and controlling the phase and diminishing to remove the interference of the mutual modulation by using the error signal detected in the detecting portion of the detecting portion(53) of a circuit for controlling the reverse of the second right direction.