baber/WOPTO huggingface dataset:
Patent KR-20110076307-A (KR)
Title: Method for enhancing bgp network security and router therefor
Inventor: SUN JAE HOON
IPC: H04L12/26
Filed: 2009-12-29
Abstract: PURPOSE: A method for enhancing a BGP(Broader Gateway Protocol) network security and a router therefor are provided to efficiently prevent DRDoS attack by enabling a router to take an optimal countermeasure. CONSTITUTION: A first router receives a BGP SYN packet from a neighboring second router(S201). It is determined whether a BGP neighboring password is set on the BGP SYN packet(S102). The BGP neighboring password is compared with the prestored neighboring password(S206). A BGP SYN/ACK packet is transmitted to the second router(S211). The ACK packet about the BGP SYN/ACK packet is received from the second router(S212).
Patent KR-20110078313-A (KR)
Title: Always, the robot in which the member making the horizontal gimbals possible is equipped
Inventor: KIM MOON KI
IPC: B25J5/00
Filed: 2009-12-31
Abstract: PURPOSE: A robot with a level maintaining member is provided to prevent the loss of objects loaded on a robot since when the robot moves on a slope, level is maintained by first and second level maintaining members. CONSTITUTION: A robot with a level maintaining member comprises a body(10), a driving member(20), a driving wheel(29), an auxiliary wheel and first and second level maintaining members(30,40). The driving member is installed on the body and moves the body. The driving wheel and the auxiliary wheel are respectively installed on the front and rear ends of the body. The driving wheel is operated by the driving member. When the body moves on a slope, the first and second level maintaining members rotate at an angle corresponding to the slope and are supported the ground surface. The first and second level maintaining members are respectively mounted on the front and rear ends of the body.
Patent KR-20090023694-A (KR)
Title: Process for acylating cellulose
Inventor: STEGMANN VEIT
IPC: C07H5/00
Filed: 2007-06-04
Abstract: The present invention relates to a process for acylating poly-, oligo-or disaccharides, or derivatives thereof, by dissolving them in an ionic liquid and reacting them with a ketene, and to novel acylated poly-, oligo-or disaccharides, or derivatives thereof.
Patent KR-20090026349-A (KR)
Title: Relaying in wireless communication systems
Inventor: SIMOENS SEBASTIEN
IPC: H04B7/08
Filed: 2007-04-26
Abstract: A communication system employs relaying of communication signals. A first communication unit (105) comprises a receive front end (201, 203) generating time domain signal samples for a signal received from a source communication unit (101). A noise processor (205) generates a noise indication for the samples and a quantisation level processor (207) determines quantisation levels such that a noise contribution resulting from quantising relative to the noise indication meets a criterion. A quantisation processor (209) generates quantised signal samples by quantising the samples using the quantisation levels. A transmit unit (211) transmits the quantised signal samples to a second communication unit (103) which comprises a receiver (309) for receiving these. A receive front end (301, 303, 305, 309) of the second communication unit (103) generates receive signal samples for the signal from the source communication unit (101) and a MIMO receive processor (311) performs a Multiple In Multiple Out, MIMO, reception of the signal using these samples and the quantised signal samples from the first communication unit (105).
Patent KR-20090048500-A (KR)
Title: Color change cyanoacrylate adhesives
Inventor: MELANCON KURT C
IPC: C09B11/02
Filed: 2007-09-06
Abstract: A cyanoacrylate-based adhesive composition is disclosed. The cyanoacrylate-based adhesive composition includes a cyanoacrylate monomer, and a bleachable dye including a Michler's hydrol cation or derivatized Michler's hydrol cation, paired with a non-nucleophilic anion that provides a stable color to the cyanoacrylate-based adhesive.
Patent KR-20090053830-A (KR)
Inventor: CHEN SHAU LIN F
IPC: B01J37/02
Filed: 2007-08-20
Abstract: 탄화수소 및 일산화탄소의 산화 및 질소 산화물의 환원을 동시에 촉매할 수 있는 3원 전환 촉매가 기재된다.  하나 이상의 실시양태에서, 상기 촉매는 캐리어와 함께 내화성 금속 산화물 지지체에 침착된 팔라듐을 포함하는, 캐리어에 침착된 제1층; 내화성 금속 산화물 지지체에 침착된 로듐을 포함하는, 제1층에 침착된 제2층; 및 내화성 금속 산화물 지지체에 침착된 팔라듐을 포함하는, 제2층에 침착된 제3층의 세 층을 포함한다. 
     
     층상 촉매 복합체, 세리아, Pd-함유 상부층
Patent KR-20090043588-A (KR)
Inventor: VAN ADRICHEM JOHN
IPC: A01G29/00
Filed: 2007-08-30
Abstract: 본 발명은 하기 단계를 특징으로 하여, 식물 재료에 처리 약제로 작용하는 적어도 하나의 물질을 투여하는 방법 및 장치에 관한 것이다: 
     표면 및 적어도 하나의 식재 위치를 가진 적어도 하나의 배지를 제공하는 단계; 주입 수단을 제공하는 단계; 배지 및 주입 수단을 서로에 대해 상대적으로 이동시키는 단계; 식재 위치에 대해 상대적으로 주입 수단의 정렬을 제어하는 단계; 및 주입 수단을 사용하여 식재 위치의 자리에 물질을 주입하는 단계.
Patent KR-20090060307-A (KR)
Title: Agrochemical composition comprising as solvent a mixture of an aromatic hydrocarbon, propylene glycol diacetate, and 1,3-dimethyl-2-imidazolidinone
Inventor: KOZUKI YUMIKO
IPC: A01N43/56
Filed: 2007-09-20
Abstract: There is provided an emulsion composition useful as a preparation containing an active agrochemical compound. The emulsion composition essentially consisting of 0.5 to 25% by weight of one or a plurality of hydrophobic active agrochemical compounds; 5 to 15% by weight of one or a plurality of surfactants; 2 to 60% by weight of one or a plurality of aromatic hydrocarbon solvents; 2 to 60% by weight of propylene glycol diacetate; 12 to 90% by weight of 1,3-dimethyl-2-imidazolidinone; and 0 to 5% by weight of one or a plurality of formulation auxiliaries, wherein a weight ratio of 1,3-dimethyl-2-imidazolidinone and the aromatic hydrocarbon solvent(s) is 1 : 0.03 to 1 : 2.0, and a weight ratio of 1,3-dimethyl-2-imidazolidinone and propylene glycol diacetate is 1 : 0.03 to 1 : 2.0.
Patent KR-20090067190-A (KR)
Title: Plasma display panel and method for manufacture thereof
Inventor: TERAUCHI MASAHARU
IPC: H01J11/40
Filed: 2007-10-19
Abstract: Disclosed is a PDP which has a protective layer having an improved discharge property and therefore can show an excellent image display performance even when the PDP has a high-resolution cell structure. Also disclosed is a method for manufacturing the PDP. Specifically, the protective layer (8) is composed of a MgO film layer (81) and a MgO crystal particle layer (82) comprising MgO crystal particles (16). The MgO crystal particles (16) are prepared in accordance with a production method employing MgO precursor firing, in such a manner that the ratio a/b becomes 1.2 or greater, wherein ''a'' represents a spectrum integral value in a wavelength range of not less than 650 nm and less than 900 nm and ''b'' represents a spectrum integral value in a wavelength range of not less than 300 nm and less than 550 nm both in the determination of a CL.
Patent KR-20090088361-A (KR)
Title: Synchronization transmissions in a wireless communication system
Inventor: KIM BYOUNG HOON
IPC: H04B1/707
Filed: 2007-10-01
Abstract: To support cell search, multiple (e.g., two) synchronization transmissions are sent in a frame with non-uniform spacing. Information is conveyed via the non-equal distances between consecutive synchronization transmissions. Multiple levels of non-uniform spacing may be used to convey different types of information. In one design, the multiple synchronization transmissions are sent in different subframes of a frame, and each synchronization transmission is sent in one of multiple symbol periods in a respective subframe. The synchronization transmissions may be sent in non-evenly spaced subframes to convey frame boundary. One synchronization transmission may be sent in one of multiple possible symbol periods depending on the information, e.g., a particular group of cell IDs, being conveyed. The distances between synchronization transmissions may also be used to convey cyclic prefix length. A secondary synchronization transmission carrying a cell ID may be sent at a predetermined offset from one of the multiple synchronization transmissions. ® KIPO & WIPO 2009
Patent KR-20090118963-A (KR)
Title: Method and apparatus for curing a thermosetting material
Inventor: INSTON DAVID GRAHAM
IPC: B29C35/02
Filed: 2008-01-31
Abstract: A method and apparatus for curing a thermosetting material (8). The method comprises heating the material with a liquid heating medium; measuring an electrical or optical property of the material with a cure sensor (12); and regulating the temperature of the liquid heating medium in accordance with the measured property of the material.
Patent KR-20090109584-A (KR)
Title: Prevention and treatment of sub-clinical PCVD
IPC: A61P31/20
Filed: 2008-02-11
Abstract: The present invention relates to the use of an immunogenic composition comprising a porcine circovirus type 2 (PCV2) antigen for the prevention and treatment of sub-clinical PCV2 infection in animals, preferably in pigs.
Patent KR-20100012033-A (KR)
Title: Communication device and communication method
Inventor: OKUYAMA YOSHIAKI
IPC: H04L45/24
Filed: 2008-05-16
Abstract: A judgment unit (101) judges which network enables use of a communication application by using a preset judgment reference according to information on a first network (111) used for acquiring the communication application and a communication condition including the communication method in acquisition. For example, the judgment unit (101) judges that a second network (112) can be used for the communication application. Moreover, a communication unit (102) performs communication based on the communication application by using the network judged by the judgment unit (101). For example, the communication unit (102) performs communication based on the communication application by using a second network (112) judged to be usable.
Patent KR-20110080202-A (KR)
Title: Connector
Inventor: CHEN HSIANG FENG
IPC: H01R13/631
Filed: 2010-01-05
Abstract: PURPOSE: A connector is provided to couple a terminal stand and a main body in an initial stage and completely couple the terminal stand and the main body using a fixing stand. CONSTITUTION: A circular hole and a square shaped hole(101) are installed in a terminal stand groove(10). A front end part(11) and a back end part(12) are installed in a main body(1). A first tenon portion(110) is installed in the front end part. A second tenon portion is installed in the front end part. The second tenon portion initially makes the terminal stand and the main body fixed. A fixing stand(3) couples the terminal stand and the main body completely.
Patent KR-20100119482-A (KR)
Title: Photomask
Inventor: SHIRASAKI TORU
IPC: H01L21/027
Filed: 2010-01-05
Abstract: PURPOSE: A photomask is provided to easily remove pellicle from the photomask. CONSTITUTION: A photomask(10) comprises a light-shielding film(16) to the pellicle frame installation region(18) of outer circumference of a pattern area(14) on a transparent substrate(12). The photomask is used for negative type resist. The transparent substrate is a quartz glass substrate. The light-shielding film contains metal silicide of molybdenum silicide, zirconia silicide and tungsten silicide.
Patent KR-20110080654-A (KR)
Title: Cock of water purifier
Inventor: CHO MIN JE
IPC: B01D35/04
Filed: 2010-01-06
Abstract: PURPOSE: A three-directional cock for a water purifier is provided to minimize the temperature of initial water by minimizing a distance between a storing bath and a water intaking hole. CONSTITUTION: A cock for a water purifier includes a first valve, a second valve, and bi-directional flowing path converting valve. The first valve receives water at first temperature and selectively transfers the water. The second valve receives water at second temperature and selectively transfers the water. The bi-directional flowing path converting valve transfers water from either of the first valve or the second valve or transfers water at third temperature. A filtering part(18) filters water from an inlet and provides the filtered water to a storing bath(13).
Patent KR-20110081620-A (KR)
Title: An automobile
Inventor: BYOUN DA YOUNG
IPC: B62D21/00
Filed: 2010-01-08
Abstract: PURPOSE: An automobile is provided to prevent a dash panel from being pushed or deformed by a front side member and to improve the safety of a passenger by minimizing the thrust of a front side member toward a dash panel by impact energy at a head-on collision. CONSTITUTION: An automobile includes a front side member(40) arranged in a motor room, and a transmission support member(60) coupled to the front side member and bent toward the outside of a transmission to support the transmission.
Patent KR-20110082251-A (KR)
Inventor: JEON CHUNG BAE
IPC: H01L33/62
Filed: 2010-01-11
Abstract: PURPOSE: A light emitting device package and manufacturing method thereof are provided to minimize the space between a light emitting device and a lens unit, thereby reducing the size of a light emitting device package. CONSTITUTION: A light emitting device(110) comprises one side(111a), a second side(111b), a side(111c) which connects the one side with the second side. An electrode unit(120) comprises a first electrode(122) and a second electrode(124). An electrode membrane(130) electrically connects the light emitting device with the second electrode. A fluorescent film(140) converts light of the light emitting device into white light. A lens unit(150) controls the light emitting angle of the light emitting device.
Patent KR-20110083098-A (KR)
Title: Semiconductor wire grid, display apparatus having the same and method of manufacturing display apparatus
Inventor: KIM EOK SU
IPC: G02F1/01
Filed: 2010-01-13
Abstract: PURPOSE: A semiconductor wire grid, a display apparatus having the same, and a method of manufacturing display apparatus are provided to display an image using the semiconductor wire grid. CONSTITUTION: A semiconductor wire grid(12) comprises a substrate(12a), a wire which is composed of semiconductor, and a groove(12c) which is placed between wires. A light polarizing ratio is controlled by varying the conductivity of the wire by the size of the voltage applied to the wire. The wire comprises a group among C, Si, SiGe, GaN, GaAs, InSb, InP, and CdS.
Patent KR-20110083177-A (KR)
Title: A method and apparatus of locating a mobile terminal using a received message
Inventor: HYUN DONG JOON
IPC: G01S5/14
Filed: 2010-01-13
Abstract: PURPOSE: A method and device of checking a location of a mobile communication terminal are provided to check a location by using a message received in a mobile communication terminal. CONSTITUTION: At least one candidate group is generated from at least one message received from a mobile communication terminals(420). A location candidate group which generates place information is matched. A location of a mobile communication terminal is determined(430). A target guiding path or grasped current location is transmitted to other terminal(450).
Patent KR-20110086395-A (KR)
Title: Panel made of expanded synthetic resins and packaging using the same
Inventor: LEE SUNG CHAN
IPC: B65D6/24
Filed: 2010-01-22
Abstract: PURPOSE: Foaming synthetic resin panel and coldness keeping panel, and a packing box using thereof are provided to remarkably reduce the transporting and storage volume. CONSTITUTION: A foaming synthetic resin panel includes a surface layer, a first panel unit, and a second panel unit. A coldness keeping panel includes a cold insulator, and an absorber. The surface layer(110) is formed with a bag or a film for vacuum-sealing and receiving a panel unit(100). The first panel unit(102) includes a concavo-convex unit on the surface contacting the second panel unit. The cold insulator(120) includes an ice pack for offering cool air. The absorber absorbs a liquid coolant.
Patent KR-20110088292-A (KR)
Title: Apparatus of manufacturing enforced glass
Inventor: SHIN JAE MYOUNG
IPC: C03C21/00
Filed: 2010-01-28
Abstract: PURPOSE: An apparatus for manufacturing tempered glass is provided to prevent the dust of potassium nitrate from dropping on the door rails of a tempering bath and an annealing bath using a door rail covering device. CONSTITUTION: A main frame(1) is prepared. A tempering bath(5) heats a potassium nitrate solution using an embedded heater and tempers disk glass immerged in the potassium nitrate solution. A door, which is opened and closed along a door rail, is arranged on the upper side of the tempering bath. An annealing bath(6) eliminates stress by annealing the tempered disk glass. A door, which is opened and closed along a door rail, is arranged on the upper side of the annealing bath. A door rail covering unit(10) prevents the dust of a potassium nitrate solution from dropping on the door rails of the tempering bath and the annealing bath.
Patent KR-20100021507-A (KR)
Title: Knife assembly for packing machine using packing film
Inventor: SO KIL JA
IPC: B65B61/10
Filed: 2010-02-04
Abstract: PURPOSE: A knife assembly of a product packing machine using a packing film is provided to prevent safety accidents resulting from electricity. CONSTITUTION: A knife fixing terminal(12) comprises a main block(13) which is made of a nonconductive material and fixed to a knife block, and a sub block(15). The lower end of the sub block is rotatably connected to the main block by a pin(14), and the end of a knife is fixed to the upper end of the sub block. Therefore, the sub block can accept length changes of the knife.
Patent KR-20100020023-A (KR)
Title: Apparatus and method for character input in portable communication system
Inventor: PARK SE HWAN
IPC: H04M1/23
Filed: 2010-02-04
Abstract: PURPOSE: A device and a method for inputting a character of a portable terminal are provided to minimize the character data input time when inputting character data through touch input. CONSTITUTION: A touch sensor(104) senses a touch input, and a control unit(100) combines the characters selected through sensed touch input with a vowel character corresponding to touch movement from the positions of the selected characters. The control unit combines judges the direction in which the touch movement happens from the selected character in order to confirm the vowel characters corresponding to the touch movement direction and combine the vowel characters with the selected characters.
Patent KR-20110092410-A (KR)
Title: Lighting structure and method of showing movement of a vehicle by using the same
Inventor: BAK JUNG WON
IPC: E01F9/053
Filed: 2010-02-09
Abstract: PURPOSE: A light emitting structure and a method for indicating the movement of a moving object using the same are provided to secure the safety of a vehicle driver by allowing the driver to immediately recognize the movement of a moving object or vehicle coming from the opposite side. CONSTITUTION: A method for indicating the movement of a moving object using light emitting structures(112) is as follows. The light emitting structures, which are successively installed along the boundary between traffic lanes(100), the boundary between a moving object road(102) and the traffic lane, the boundary between a sidewalk(104) and the moving object road, and the boundary between the traffic lane and the sidewalk, emit light of a first color. It is detected whether a moving object(120) travels on one of the traffic lane and the moving object road. If detected, the light emitting structures after the light emitting structure corresponding to the detected location emits light of a second color.
Patent KR-20110093068-A (KR)
Inventor: BAE YOU SUK
IPC: H01L21/66
Filed: 2010-02-11
Abstract: PURPOSE: A location accuracy inspecting system and a method thereof are provided to measure an error of precision through visual inspection and supply information about the error to a user. CONSTITUTION: An image photographing unit photographs the movement of a chuck on an image that an image providing unit provides(S640). Reference coordinate value changes before/after the movement of the chuck are calculated(S660). A moved location precision error is calculated using the calculated reference coordinate value changes and the distance of a moved chuck(S670).
Patent KR-20110093139-A (KR)
Title: Rahmen type corrugated steel plate structures
Inventor: KIM HYEON KUK
IPC: E04B7/08
Filed: 2010-02-11
Abstract: PURPOSE: A rahmen type corrugated steel plate structure is provided to prevent excessive stress and deformation by securing enough resistance at the corners. CONSTITUTION: A rahmen type corrugated steel plate structure comprises grooves(101,101') which are formed lengthwise on the top of bases(10,10'), guide channels(11,11') with open top which are inserted in the grooves, a reinforcement rahmen member(40) which is abutted against a bending corner part(201) of a rahmen type corrugated steel plate(20), and a fixing bracket(50) which fixes the reinforcement rahmen member. The reinforcement rahmen member is made of a hollow round or square pipe(401). The fixing bracket includes a fixing piece(501) and flanges(502) which are bent outward on both lower sides of the fixing piece.
Patent KR-20100022510-A (KR)
Title: Hot water boiler
Inventor: YUN MI JIN
IPC: F24H8/00
Filed: 2010-02-17
Abstract: PURPOSE: An inversion-burning hot water boiler is provided to reduce energy consumption and fuel cost by decreasing waste heat and increasing thermal efficiency. CONSTITUTION: An inversion-burning hot water boiler(100) comprises a main body(110). A combustion chamber(130) is formed inside the main body. A burner(120) is installed on the side of the main body in the direction of the combustion chamber. The combustion chamber comprises a first heat exchange chamber(142), a flue link chamber(144), a first heat exchange pipe, a second heat exchange pipe(152), an inner circulation piping and a flue(170). The first heat exchange chamber is located on the upper part and the lower part of the inlet of the combustion chamber. The first heat exchange chamber is placed in the shape of a circle. The flue link chamber is positioned behind the combustion chamber. The first heat exchange pipe is connected between an inversion inflow chamber and the second heat exchange chamber.
Patent KR-20110096724-A (KR)
Inventor: JANG YUN SEOK
IPC: A43B7/00
Filed: 2010-02-23
Abstract: 본 발명은 착용자의 발등을 통하여 미세전류를 전달함으로써 이에 의해 발바닥의 자극을 억제하고 상처부위로 미세전류가 전달되어 상처치유에 도움이 되도록 하는 기능성 신발에 관한 것으로, 발바닥이 접하는 밑창과 발등 또는/및 측면을 이루는 부위를 감싸는 갑피로 이루어지는 미세전류 발생 신발에 있어서, 상기 갑피의 내면 일측에 설치되고, 발등부위에 접면되는 미세전류접점부와; 상기 미세전류접점부를 통해 전달된 전류를 인체 내부를 통해 전달되도록 하는 미세전류전도부; 그리고 상기 미세전류전원부에 미세전류를 인가하는 미세전류전원부;를 포함하여 이루어져, 발등부분을 통해 전달된 미세전류가 저항이 가장 낮은 상처부위 또는 발가락 사이를 통해 인체 내부로 미세전류가 통전되도록 하는 기능성 신발을 제공하는 것이다.  본 발명에 따르면, 배터리로부터 공급되는 전기적 에너지가 발등부분을 통해 전달되도록 함으로써 발바닥을 통한 외부적 자극이 전혀 없어 당뇨환자들이 보다 편안하게 신발을 신고 보행하고, 미세전류에 의한 치유기능을 누릴 수 있는 효과가 있다.
Patent KR-20110100500-A (KR)
Inventor: LEE AHN HO
IPC: G03F7/42
Filed: 2010-03-04
Abstract: 본 발명은 감광성 수지 제거제 조성물 및 이를 이용하는 반도체 제조 방법을 제공한다. 이 감광성 수지 제거제 조성물은 아민 화합물과 탈이온수를 포함하되 탈이온수의 함량이 45~99 중량%이다. 이 감광성 수지 제거제 조성물은 제거 촉진제를 더 포함한다. 이 감광성 수지 제거제 조성물은 경화되거나 변성된 감광성 수지 및 그 부산물을 효과적으로 짧은 시간 안에 제거할 수 있다. 또한 이 감광성 수지 제거제 조성물은 금속에 대한 부식을 최소화할 수 있다.이 감광성 수지 제거제 조성물은 물의 함량이 45~99 중량%로 높아서, 후속의 세정 공정에서 이소프로필 알콜 없이 증류수만을 이용하는 것이 가능하다. 이로써 전체 공정을 단순화시킬 수 있다.
Patent KR-20110100709-A (KR)
Inventor: BAEK SEUNG AM
IPC: B65G49/06
Filed: 2010-03-05
Abstract: 기판 가공장치 및 가공방법이 개시된다. 본 실시예에 따른 기판 가공장치는, 기판을 적재하여 이동하는 사이드테이블과, 사이드테이블에 의해 이송되는 기판을 보조 지지하는 롤러 컨베이어와, 사이드테이블의 이동 경로를 규정하는 이송라인에 교차하도록 배치되는 가공부와, 사이드테이블에 의해 이송된 기판을 언로딩시키고 회전시키는 센터테이블을 기본 골격으로 한다. 이에 의하면, 롤러를 이용하여 대형 기판이 쳐짐 없이 빠르게 이송되도록 하여 에지 연마 등과 같은 기판 가공이 안정적으로 수행되도록 하고, 자체 회전이 가능한 롤러를 이용하여 대형 기판의 가공면 위치 변경시 쳐짐 없이 안정적이면서도 빠른 회전이 이루어지도록 할 수 있다.
Patent KR-20110100728-A (KR)
Inventor: SEO DONG WOO
IPC: H04B1/40
Filed: 2010-03-05
Abstract: 휴대용 단말기의 이어폰 인식 회로 장치 및 방법에 관한 것으로서, 상기 휴대용 단말기의 이어폰 인식 회로는, 이어폰의 삽입 여부를 알리는 신호를 출력하고, 삽입된 이어폰의 세 번째 극으로부터 입력되는 신호를 제 1 스위치로 제공하고 네 번째 극으로부터 입력되는 신호를 제 2 스위치로 제공하는 이어잭과, 입력되는 제어 신호에 따라 상기 이어잭으로부터 제공되는 신호를 비교기 혹은 그라운드(GND)로 출력하는 제 1 스위치와, 입력되는 제어 신호에 따라 상기 이어잭으로부터 제공되는 신호를 비교기 혹은 그라운드(GND)로 출력하는 제 2 스위치와, 상기 제 1 스위치 혹은 제 2 스위치로부터 제공되는 신호의 전압과 기준 전압을 비교하여 비교 결과를 나타내는 신호를 출력하는 상기 비교기와, 상기 이어폰의 삽입 여부를 알리는 신호에 따라 상기 제어 신호를 출력하고, 상기 비교기의 출력 신호에 따라 상기 제어 신호를 변경 혹은 유지하는 메인칩을 포함하여, 휴대용 단말기에서 3.5파이 4극 공통향 이어폰과 3.5파이 4극 미주향 이어폰을 모두 사용할 수 있다.