baber/WOPTO huggingface dataset:
Patent KR-20000019679-A (KR)
Title: Portable flashlight sending sos signals
Inventor: SONG JIN HO
IPC: F21L19/00
Filed: 1998-09-15
Abstract: PURPOSE: A portable flashlight is provided to rescue by informing outside of the position of oneself by sending radio signals or a visible sign of light of a lamp when one meets with an accident at a remote area. CONSTITUTION: A flash is prepared by inserting a separate an IC embedding a program into a flash body to make an emergency signal generation and an alarm device are performed repeatedly. The light of the lamp is flickered by moss signals by the operation of a separate switch in an emergency state. And emergency signals are generated wirelessly to be able to be received or identified at an outer place. Thereby, a user can ask for a help to the outer place in the emergency state.
Patent KR-19990036656-A (KR)
Title: 스퍼터 캐소드
IPC: C23C14/35
Filed: 1998-09-19
Abstract: 본 발명은 판형 타깃(8)과, 타깃(8)의 배후에 배치되고 중간 브리지(5)가 마련된 욕조형 요크(3)와, 타깃면의 전방에 만곡된 아치형 자계선(15, 15', …)으로 이루어진 폐쇄 터널을 생성하기 위한 자석(7, 7', …)과, 타깃(8)과 타깃(8)쪽을 향한 요크(3)의 욕조 에지부의 단부면(12)과의 사이의 평면에 개재되는 3개의 박판 재단물(9, 10, 11)을 구비하고, 모든 박판 재단물(9, 10, 11)이 함께 단부면(12, 13)을 따라 평행하게 연장되는 2개의 틈새(a, b)를 형성하며, 자석(7, 7', …)이 각각 요크(3)의 바닥 속에 포함되거나 삽입되고, 타깃(8)쪽을 향한 자석(7, 7', …)의 측면 및 타깃(8)의 반대쪽을 향한 자석(7, 7', …)의 측면이 요크 바닥에 꼭 들어맞게 체결되는 스퍼터 캐소드에 관한 것이다.
Patent KR-20000024828-A (KR)
Title: Serial communication apparatus between shelves of wll system
Inventor: KIM DEOK WAN
IPC: H04B7/26
Filed: 1998-10-02
Abstract: PURPOSE: A serial communication apparatus between shelves of a WLL system is provided to effectively transmit data with a simple structure using an E1 transceiver. CONSTITUTION: A serial communication apparatus between shelves of a WLL system includes first and second shelves. The first shelf(10) includes a first CDB(Cell Dellination Block)(1), a first E1 transceiver(2), and a first PLL. The first CDB is to transform a 32bit ATM cell structure being inputted into a data structure. The first E1 transceiver is to transform a data inputted from the first CDB into an E1 serial data of 2.048MHz. The first PLL is to adjust a synchronousness of the first CDB and the first E1 transceiver. The second shelf(20) neighboring on the first shelf includes a second E1 transceiver(2), a second CDB(5), and a second PLL(6). The second E1 transceiver is to receive an E1 serial data from the first E1 transceiver. The second CDB is to process a normal IPC signal as transform the E1 serial data inputted from the second E1 transceiver into a 32bit ATM cell structure. The second PLL is to adjust a synchronousness of the second E1 transceiver and the second CDB.
Patent KR-20000027516-A (KR)
Title: Method for fabricating field emission display device
Inventor: KO YOUNG WOOK
IPC: H01J1/30
Filed: 1998-10-28
Abstract: PURPOSE: A method for fabricating a field emission display device is provided to form a micro-sized gate hole without introducing additional equipment in order to form an electric field on tips and more tips. CONSTITUTION: A method for fabricating a field emission display device comprises the steps of: forming an insulating layer(12) on a substrate(11); forming a first gate electrode layer(13) on the top of the insulating layer; patterning to form a hole on the first gate electrode layer; forming a gate hole by etching the insulating layer so that whose side wall is tapered, with the first gate electrode layer as a mask; forming a second gate electrode layer(14) on the top and side wall of the first gate electrode layer; forming an aluminum sacrificial layer on the top and side wall of the second gate electrode layer; forming an emitter tip(16) in the shape of a cone in the gate hole; and removing the tip formation material and the aluminum sacrificial layer remained on the top of the second electrode layer.
Patent KR-19990014430-A (KR)
Title: 경운기에 장착하여 사용토록된 다목적 밭갈이기
Filed: 1998-11-06
Abstract: (1) 청구범위에 기재된 발명이 속한 기술분야. 
     경운기에 장착하고 경운기의 동력을 사용하여 로타리 작업과 두둑형성작업을 할 수 있게 하는 밭갈이기에 관한 것임. 
     (2) 발명이 해결하고자 하는 기술적과제. 
     종래에는 로타리작업시 능률이 저조하였고 구석진 곳의 작업은 불가능하였으며 두둑형성작업을 수작업으로 하여야 하므로 밭농사가 매우 힘들 수 밖에 없었음. 
     (3) 발명의 해결방법의 요지. 
     경운기에 장착하여 사용토록 고정브라켓(11)과 전달축(15)등을 구성하고 체인케이스(20)를 이용하여 하단부로 동력을 전달하여 체인케이스 하단에 로타리바퀴(50) 또는 후립바퀴(60)를 장착하여 사용토록 하며, 스크류(14)를 이용하여 체인케이스(20)를 좌우 이동가능토록 구성하였음. 
     (4) 발명의 중요한 용도. 
     로타리 작업과 두둑형성작업도 경운기를 이용하여 할 수 있고 작업능률이 매우 뛰어나며 구석진 곳의 작업도 편리하게 할 수 있게 됨.
Patent KR-20000032305-A (KR)
Title: Fabrication method of thin film actuated mirror array
Inventor: KIM HWA NYEON
IPC: G02F1/015
Filed: 1998-11-13
Abstract: PURPOSE: A fabrication method of thin film actuated mirror array is provided to remove the stress generated while forming a mirror by using a stress control layer, thereby enhancing the horizontality of the mirror. CONSTITUTION: A fabrication method of thin film actuated mirror array comprises steps of: forming a first sacrifice layer(160) and an actuator(210) on an active matrix(100); forming support elements(175) between the active matrix and the actuator; forming a second sacrifice layer(300) and photoresist on the actuator and the support elements; forming a hard mask(330) on the photoresist and then patterning the photoresist and the second sacrifice layer using the hard mask, thereby forming a post hole; removing the hard mask; forming a stress control layer(340) on the photoresist and the post hole; and forming a mirror(260) on the stress control layer.
Patent KR-20000033865-A (KR)
Title: Apparatus for converting format of digital audio data
Inventor: LEE SEUNG HUN
IPC: G11B20/10
Filed: 1998-11-26
Abstract: PURPOSE: An apparatus for converting format of digital audio data is to convert audio data existing in a computer with various formats into data format capable of recording or playing in a conventional audio recorder without using the computer. CONSTITUTION: An apparatus comprises: a pulse code modulator(10) for converting an audio data file with various forms in a computer into pulse code modulated data according to their properties; an interface format converter(12) for converting the pulse code modulated data into a format conforming to a digital audio interface; and a digital audio interface unit(14) for transmitting the digital audio data formatted to a recorder. The apparatus further comprises a buffer(16) coupled to the digital interface format converter and a controller(18) for controlling the pulse code modulator, the interface format converter and the digital audio interface unit.
Patent KR-19990062974-A (KR)
Title: 피부 담색화를 위한 화장품 조성물
IPC: A61K8/96
Filed: 1998-12-10
Abstract: 본 발명은 화장품 조성물 중의 활성 성분으로서 이소노닐 페룰레이트 및 피부 담색화 방법에 관한 것이다.
Patent KR-20000040366-A (KR)
Title: Method and apparatus for controlling sprayed fuel amount of vehicle
Inventor: HAM YUN YEONG
IPC: F02D41/30
Filed: 1998-12-18
Abstract: PURPOSE: A method of controlling the sprayed fuel amount of a vehicle is provided to prevent sagging, hesitation or stalling of an engine by controlling the sprayed amount of fuel depending on volatility of fuel. CONSTITUTION: An ECM(electronic control module,400) receives signals from a pressure sensor(100) of a fuel tank, a fuel rate sensor(200) and a temperature sensor(300). The ECM sets reference pressure and a permissible error depending on temperature and fuel rate. After that, the ECM controls the spraying amount of fuel larger or smaller than reference one if the difference between the reference pressure and the permissible error is smaller or larger than 0 respectively. That is, the ECM controls the spraying amount of fuel depending on the fuel tank pressure.
Patent KR-20000040655-A (KR)
Title: Apparatus for controlling control data for cable television and method thereof
Inventor: LEE HYEON CHEOL
IPC: H04N7/10
Filed: 1998-12-18
Abstract: PURPOSE: An apparatus for controlling control data for cable televisions and a method thereof are provided to adjust the audio and video quantities of new channel to the values stored by a user. CONSTITUTION: An apparatus for controlling control data for cable televisions includes a converter, an audio processor, a speaker, a video processor, a CRT, a memory, and a controller. The cable broadcasting signal selected in the converter is processed in the audio processor. The memory stores control data for audio and video signals for each channel, respectively. The controller controls the audio processor and video processor to adjust the audio and video signals of the current screen according to the values stored in the memory for each channel, respectively.
Patent KR-20000041413-A (KR)
Title: Fabrication of simulation model pattern for chemical mechanical polishing process of interlayer dielectric
Inventor: CHOI GI SEOK
IPC: H01L21/304
Filed: 1998-12-22
Abstract: PURPOSE: A fabrication of a model pattern used for a simulation of chemical mechanical polishing(CMP) process of an interlayer dielectric is provided to facilitate a sampling of model parameter and to improve a reliability of measurement. CONSTITUTION: To simulate a chemical mechanical polishing(CMP) process of an interlayer dielectric(33), a model pattern including a polishing stop layer(32) is fabricated. First, an oxide layer(31) is deposited and selectively etched on a silicon wafer(30), and then a silicon nitride layer(32) is deposited thereon. Next, the interlayer dielectric(33) is deposited on the silicon nitride layer(32) and then selectively etched to obtain planarized surfaces. Subsequently, the chemical mechanical polishing process is performed with respect to the interlayer dielectric(33) by using a slurry composition. Then, resultant parameters such as a dishing or an edge polish profile are measured by using a declinometer or an optical thickness measure. In particular, the silicon nitride layer(32) is employed as the polishing stop layer not damaged during the chemical mechanical polishing process.
Patent KR-20000041417-A (KR)
Title: Semiconductor device comprising diode between input pad and esd(electrostatic discharge) protection circuit
Inventor: KWON TAE WOO
IPC: H01L29/78
Filed: 1998-12-22
Abstract: PURPOSE: A semiconductor device comprising a diode between an input pad and an ESD(Electrostatic Discharge) protection circuit is provided which can improve the VILL(Input Voltage Low Limit) problem and can reduce the electron injection density and the input electrostatic capacity. CONSTITUTION: A semiconductor device improves the VILL(Input Voltage Low Limit) problem and reduces the electron injection density and input electrostatic capacity by forming a diode which is operated in reverse direction when a voltage lower than an operation voltage of the device is applied to an input pad, between the input pad and an ESD protection circuit. The ESD protection circuit comprises: a first P well formed in a semiconductor substrate(20); a first transistor which is formed in the P well and whose source is connected to a power supply voltage(Vcc) and whose gate is connected to a ground voltage(Vss); and a second transistor which is connected to the first transistor serially and whose source and gate are connected to the ground voltage. And the diode comprises the P well and an N well formed in the semiconductor substrate between the input pad and the ESD protection circuit.
Patent KR-20000041925-A (KR)
Title: Rf module control unit of dect base station
Inventor: CHO JIN GYUN
IPC: H04L29/06
Filed: 1998-12-24
Abstract: PURPOSE: A RF control unit of a digital enhanced cordless telecommunication(DECT) base station is provided to eliminate unnecessary time and cost owing to a change of a control program by controlling a RF module through an exchange of a ROM which stores data with regard to a control signal. CONSTITUTION: A RF control unit of a DECT base station comprises a power supply part(10) which converts an externally applied power supply voltage of 110V to 220V into a predetermined voltage necessary for each load. A line interface part(20) is connected to a wire line which is coupled to a DECT system, and interfaces overall operation signals between the DECT system and a bast station. An RF module control part(30) analyzes a signal applied through the line interface part(20) from the DECT system to extract a control signal for a modulation of transmitted data and a band selection of a frequency channel. The RF module control part(30) enables an address of a ROM(40) which stores the extracted control, and applies process information of data received from a handset through a cell network into the DECT system. The ROM(40) applies control data stored in a corresponding address to the RF module(50) in response to an enable signal from the RF module control part(50). The RF module(50) modulates data to be transferred to the handset side, and sends the modulated data through an antenna(ANT1) in a radio frequency.
Patent KR-20000041957-A (KR)
Title: Semiconductor dram cell capacitor fabrication method
Inventor: LEE SEUNG HWAN
IPC: H01L27/108
Filed: 1998-12-24
Abstract: PURPOSE: A semiconductor DRAM(Dynamic random access memory) cell capacitor fabrication method is to maintain a stable boundary and minimize occurrence of stress in a dielectric layer of the DRAM. CONSTITUTION: A semiconductor DRAM cell capacitor fabrication method comprises the steps of: forming a lower electrode(180) on a semiconductor substrate; re-crystallizing the lower electrode; forming a dielectric layer(190) on the re-crystallized lower electrode; forming an upper electrode(110) on the dielectric layer; and thermally annealing the resultant semiconductor substrate. The lower electrode is one selected from the group consisting of platinum(Pt), ruthenium(Ru) and Iridium(Ir). The dielectric layer is selected from the group consisting of Ta2O5, BST(BaSrTiO3) and PZT(PbZrTiO3).
Patent KR-20000042020-A (KR)
Title: Canister installation structure of fuel system
Inventor: CHOI WOO YEON
IPC: B60K15/03
Filed: 1998-12-24
Abstract: PURPOSE: A canister installation structure of fuel system is provided to simply install a canister by mounting a fixing bracket on a fuel tank and installing a canister on the fixing bracket, so that an assembly and a work efficiency are improved and a canister is fixed tightly CONSTITUTION: A canister installation structure of fuel system comprises: an installation part (11) formed in one side of a fuel tank (10); a wing park (21) formed in both side to fix on the installation part; a settlement part (22) formed in the inner of the wing part; an inserting hole (23) formed in upper one side of the settlement part; a fixing bracket (20) to have a projected connecting plate (24) with a bolt hole; a combining part (31) projected and formed in the lower, inserted in the inserting hole of the fixing bracket and fixed; a combing plate (32) formed in one side of the combining park and settled in the connecting plate.
Patent KR-20000044094-A (KR)
Title: Structure for preventing interlock of swing door of bus
Inventor: PARK YEONG JU
IPC: B60J5/06
Filed: 1998-12-30
Abstract: PURPOSE: An interlock preventing structure of a swing door of a bus is provided to prevent interlock of a swing door by making a second striker plate of a swing door adhered to a second locking cam of a vehicle body panel when closing a swing door. CONSTITUTION: An air cylinder(2) rotating right and reverse rotates clockwise when a driver opens a door switch. A drive shaft(10) installed on a vehicle body panel rotates clockwise with the air cylinder. A swing door(1) is pushes rearward whiling being opened forward and opened completely thus passengers take off a bus. To close the swing door, the air cylinder rotates counterclockwise and the driver shaft rotates counterclockwise. The swing door is pulled forward while rotating counterclockwise and closed slowly and completely. An inclined face(53a) of a striker plate(50) fixed by a fixing bolt(51) via a through hole(52) formed on a first fixing device(53) is guided to another inclined face(62a) on one face of a first locking cam(60) fixed by the fixing bolt via a through hole(61) of a second fixing device(62) and closed slowly. Thereby, interlock of the swing door is prevented.
Patent KR-20000045417-A (KR)
Title: Redundancy circuit
Inventor: CHO GWANG RAE
IPC: G11C29/00
Filed: 1998-12-30
Abstract: PURPOSE: A redundancy circuit is provided to reduce cost for testing by reducing the number of fuses through freely selecting plural repair word lines while using one fuse. CONSTITUTION: A number of column addresses is increased by one as the width of data is reduced into half for satisfying the various widths of the data. A bit line sense amplifier pair narrower than the data width is operated by one column address. Repair word line decoders are formed in respective sub-blocks. A switch selected by one fuse box is prepared on the input path of the repair word line decoder. Herein, plural repair word lines are divided by a decoding circuit.
Patent KR-20000045514-A (KR)
Title: Method for producing high-strength thick steel strip having low yield ratio
Inventor: YU HO CHEON
IPC: B21B1/22
Filed: 1998-12-30
Abstract: PURPOSE: A method is provided to produce a high-strength thick steel strip having low yield ratio by obtaining a compound structure of fine ferrite and perlite. CONSTITUTION: A steel ingot consists of 0.01 to 0.15wt% of C, less than 0.50wt% of Si, 0.5 to 2.0wt% of Mn, less than 0.020wt% of P, less than 0.010wt% of S, 0.005 to 0.050wt% of Al and the remain of Fe and incidental impurities. Herein, the steel ingot contains more than one among 0.08 to 0.50wt% of Cu, 0.08 to 0.50wt% of Ni, 0.005 to 0.050wt% of each Ti, Nb and V, 0.01 to 1.0wt% of each Cr and Mo and 0.0010 to 0.0050wt% of Ca. The steel ingot is heated in a temperature of 1000 to 1200°C and hot rolled. Then, the ingot is cooled at more than 7°C/sec of speed within a temperature more than Ar.sub.3 transformation point to a normal temperature and cooled again with air. The ingot is reheated and hot rolled with 10 to 80% of depressing ratio in a temperature between Ac.sub.1 to Ac.sub.3 transformation point.
Patent KR-19990036345-A (KR)
IPC: C12H1/044
Filed: 1996-04-12
Abstract: Highly purified non-calcined, calcined, and flux-calcined diatomite products are disclosed, as are methods for their preparation, which bear the distinguishing porous and intricate structure of silica unique to diatomite and which have an extraordinarily high silica (i.e., silicon dioxide, SiO2) content and low density, resulting in high silica specific volume. These products often also exhibit exceptionally low soluble metals content and/or extreme brightness and can be used in filtration processes, eg. in filtering beer. <IMAGE>
Patent KR-20000064443-A (KR)
Title: 코팅에의하여안정화된고체퍼옥소및퍼옥시화합물들
IPC: C11D17/00
Filed: 1996-12-11
Abstract: a) 지방산 또는 바람직하게는 이들의 알카리금속 또는 알카리토금속염; 및 b) 설포네이트와 설페이트들로 치환된 장쇄의 군에서 선택된 음이온 계면활성제;를 필수적으로 함유하는 혼합물로 코팅함으로써 고체의 퍼옥소 및 퍼옥시 화합물들, 특히 소듐 퍼옥시카보네이트와 아세틸 퍼옥시보레이트 화합물들을 안정화시켰다.
Patent KR-19990087634-A (KR)
Title: 농약성 히드라지드 유도체
IPC: C07D335/02
Filed: 1997-03-03
Abstract: 하기 식의 화합물. 
     
       
         
       
     
     여기서 R은 a) 페닐; 페닐(C 1 -C 4 알콕시); 페녹시; 또는 벤질(각 치환체의 페닐 고리는 할로겐, 니트로, C 1 -C 8 알킬, C 1 -C 8 알콕시, C 1 -C 8 할로알킬, C 1 -C 8 할로알콕시, 디(C 1 -C 8 알킬) 아미노, 페닐 또는 페녹시 중 하나 이상의 성분으로 임의로 치환된다); 또는 b) N, O 또는 S로 구성되어 있는 군으로부터 선택된 1∼3 이종원자를 포함하는 5- 또는 6- 멤버 이종원자고리 그룹(이종원자고리 그룹은 할로겐, 니트로, C 1 -C 8 알킬, C 1 -C 8 알콕시, C 1 -C 8 할로알킬, C 1 -C 8 할로알콕시, 또는 디(C 1 -C 8 알킬) 아미노 중 하나 이상의 성분으로 임의로 치환된다). 이들 화합물 및 그들로부터 제조된 농약조성물은 곤충, 선충류 및 진드기 제어용 식물보호제로서 유용하다.
Patent KR-19990087669-A (KR)
Title: 광픽업장치
IPC: G11B7/135
Filed: 1998-01-07
Abstract: 광 픽업 장치는 DVD의 재생시에 입사 레이저 빔(18)을 그 편광 방향을 90도회전시켜 투과시키고, 한편, CD의 재생시에 입사 레이저 빔(18)을 그 편광 방향(17)을 회전시키지 않고 투과시키는 선광성 소자(11), 및 DVD의 재생시에 그 편광 방향이 회전된 레이저 빔의 전부를 투과시키고, 한편, CD의 재생시에 그 편광 방향이 회전되어 있지 않은 레이저 빔의 외부 주변부를 차광함으로써 대물 렌즈(15)의 실효 개구수를 적게 하는 편광 소자(14)를 구비한다.  선광성 소자(11)의 입사측의 배향막(rubbing film; 24)의 배향 방향(28)은 입사 레이저 빔(18)의 편광 방향(17)과 평행하게 된다. 그 때문에, 이 광 픽업 장치는 레이저 빔의 손실을 억제하면서, DVD 뿐만 아니라 CD의 재생도 가능하다.
Patent KR-20000056720-A (KR)
Inventor: LEE PAL JIN
IPC: D06F39/08
Filed: 1999-02-25
Abstract: PURPOSE: An apparatus is provided to achieve an increased accuracy of water level/vibration sensing while allowing the sensor to be fixed with stability. CONSTITUTION: An apparatus comprises a pusher(100) including a guide member(101) having a predetermined diameter and length and which is arranged in vertical direction, a support projection(102) arranged at a top of an outer periphery of the guide member so as to be hook-coupled with a core; and a roller support unit(200) including a rolling guide member(201) having a surface tilted at a predetermined angle and a predetermined diameter for a dip slip of the roller, a plurality of ribs(202,203,205) arranged downward from a bottom surface of the rolling guide member, and an ellipsoidal insertion member(206) protruded in lengthwise direction from a bottom center of the ribs and which is compressively inserted into and hook-coupled with the guide member of the pusher. Thus, the water level/vibration sensor is fixed with stability, simplifying assembling procedure of the sensor.
Patent KR-19990077798-A (KR)
Title: 반도체 장치의 제조 공정
IPC: H01L21/205
Filed: 1999-03-11
Abstract: 본 발명은 실란(silane) 화합물 및 도펀트를 감압 화학 기상 증착 반응로 내에 주입하여 웨이퍼 상에 도핑된 실리콘 막을 증착하는 단계, 및 증착 종료시에,  반응로 내에 산화 가스를 주입하여 증착된 실리콘 막 상에 산화막을 형성하는 단계를 포함하는, 반도체 장치의 제조 공정에 관한 것이다.  본 발명에 따르면, 증착 단계 중에 이상 성장 또는 입자와 같은 이물(foreign matter) 발생이 효과적으로 최소화될 수 있어서 생산 수율이 향상되고, 고품질 고신뢰도의 반도체 장치가 제공된다.
Patent KR-20000060140-A (KR)
Inventor: KIM YO SEOP
IPC: H04L12/28
Filed: 1999-03-12
Abstract: PURPOSE: A routing simulation method of a mobile telephone network is provided for informing an operator of a call flow when an error occurs in a certain switch or relay cable. CONSTITUTION: A routing logic controller of a server receives an arrival signal switch information, an arrival signal number, a switch-based characteristic information, etc, from a user input processor of a client. A routing logic controller determines whether a certain switch performs a routing logic and transfers a temporarily routing number using an arrival switch information. An output number and output relay cable are determined using a routing related data from a switch stored in a database based on an operation of a routing logic of a corresponding switch.
Patent KR-19990046064-A (KR)
Title: 양란심비디움신품종큐트식물
IPC: A01H5/00
Filed: 1999-03-17
Abstract: 본 발명은 백색을 가지는 복륜화로서 분화용의 우수한 양란 심비디움 신품종에 속하는 식물 "큐트"를 제공하는 뛰어난 효과가 있다.
Patent KR-20000061009-A (KR)
Inventor: PARK SEONG GYU
IPC: H04N7/015
Filed: 1999-03-22
Abstract: PURPOSE: An apparatus for detecting a co-channel interference signal is provided to detect a co-channel interference signal from a received signal, store a comparison value according to the same channel interference signal as a hysteresis, and remove the interference signal by using a comb filter. CONSTITUTION: The apparatus for detecting a co-channel interference signal includes a first comb filter(100), a second comb filter(200), a first subtracter(300), a first absolute value calculator(400), a first accumulator(500), a second subtracter(600), a second absolute value calculator(700), a second accumulator(800), a constant value calculator(900), a third subtracter(1000), a first comparator(1100), a second comparator(1200), a first counter(1300), a second counter(1400), a third counter(1500), a third comparator(1600) and a multiplexer(1700). The first comb filter(100) rejects a co-channel interference signal included in a received signal and transmits the result. The second comb filter(200) filters an ideal synchronous signal so as to make a pattern same to a synchronous included in the received signal. The multiplexer(1700) receives a signal from the first comb filter and a signal without processed by the first comb filter and outputs selectively according to a comparison signal from the third comparator.