baber/WOPTO huggingface dataset:
Patent KR-20070039230-A (KR)
Inventor: KIM CHEOL AN
IPC: A61B8/00
Filed: 2005-10-07
Abstract: 본 발명은 초음파영상 디스플레이 방법에 관한 것으로, 최적화된 초음파영상을 디스플레이하기 위한 소정의 주기 값을 설정하는 단계와, 상기 주기로 입력되는 제 1 초음파영상 프레임의 데이터와 제 2 초음파영상 프레임의 데이터를 비교하는 단계와, 상기 비교에 따른 차이 값이 소정의 임계값보다 크면, 상기 제 2 초음파영상 프레임의 데이터에 따라 영상 파라미터를 변경하여 최적화하는 단계와, 상기 최적화된 제 2 초음파영상 프레임을 디스플레이하는 단계를 포함하며, 상기 영상 파라미터는 이득값, 시간이득 제어값, 및 동적범위를 포함하는 초음파영상 디스플레이 방법을 제공한다. 
       
     초음파영상, 최적화, 파라미터, 평균값, 중간값.
Patent KR-20070044606-A (KR)
Inventor: BAE EUN SHIL
IPC: G06K17/00
Filed: 2005-10-25
Abstract: 본 발명은 차량에 탑재되고, 도로면에 부착된 전자 태그를 인식하여 차량의 경로 안내 서비스를 제공하는 경로 안내 장치 및 방법에 관한 것으로서, GPS 수신기로부터 위치 정보를 입력받고, 차량의 이동에 따라 상기 전자태그를 읽어 위치 정보를 읽어들인다.  그리고 나서, 상기 전자태그로부터의 위치 정보가 입력되었는지 판단하고, 상기 전자태그로부터 위치 정보가 입력되면, 상기 전자태그의 위치 정보를 이용하여 차량의 위치를 계산하고, 계산된 차량의 위치에 따라 경로 안내 서비스를 제공한다.  이렇게 함으로써, 운전자에게 정확한 위치정보를 이용하여 보다 정확한 경로 안내 서비스를 제공할 수 있다. 
       
     	RFID, 교통, 도로, GPS, 위치정보
Patent KR-20070047038-A (KR)
Inventor: CHO SUNG MIN
IPC: H04N5/44
Filed: 2005-11-01
Abstract: 본 발명은 디지털 멀티미디어 방송이 서비스되는 지역별, 영역별로 각기 다른 방송 채널이 수신될 수 있도록 하는 디지털 멀티미디어 방송 시스템의 지역별 방송 채널 서비스 방법을 제공한다. 이를 위해 본 발명은 디지털 멀티미디어 방송 시스템의 방송 채널 서비스 방법에 있어서, 특정 지역에 대해 서비스가 유효한 채널을 지정하고, 상기 특정 지역에 대해서만 차별적으로 서비스가 유효한 채널을 수신 설정하는 단계와, 위성국으로부터 전송되는 다수의 전체 채널 중에서 상기 특정 지역에 대해 수신 허용된 유효 채널이 해당 특정 지역에서만 수신 허용되고, 여타 지역에 대해서는 상기 서비스 채널이 수신 금지되는 단계로 이루어진 것을 특징으로 한다.  
       
     디지털 멀티미디어 방송(DMB), 위성방송, 갭 필러, 채널, 지역(Zone)
Patent KR-20070049294-A (KR)
Inventor: RYU HUI KANG
IPC: F25D23/02
Filed: 2005-11-08
Abstract: 본 발명은, 적어도 하나의 도어 개구를 갖는 저장실이 형성된 본체와, 상기 도어 개구를 개폐하며 물건을 수납하는 가드와 상기 가드를 지지하도록 상기 도어 내벽면 양측에 상호 대향되게 돌출된 한 쌍의 리브를 포함하는 도어를 갖는 냉장고에 있어서, 상기 한 쌍의 리브에 마련되어 조명하는 적어도 하나의 도어발광다이오드(LED)유닛과, 상기 도어의 개폐를 감지하는 도어 개폐 감지부와, 상기 도어 개폐 감지부로부터의 신호에 기초하여 상기 도어발광다이오드유닛을 점등 및 소등시키는 제어부를 포함하는 것을 특징으로 한다. 이에 의하여, 냉장고 도어 개방시 도어발광다이오드(LED)유닛의 점등으로 냉장고의 조명을 개선하여 사용자의 편의성을 증가시킨다.
Patent KR-20070051046-A (KR)
Inventor: LEE HU EUN
IPC: H04N21/414
Filed: 2005-11-14
Abstract: 디스플레이 장치를 구비하는 철도차량이 개시된다. 상기 철도차량은 회전가능하고 등받이 후면에 부착된 제1디스플레이 장치와 팔걸이에 설치된 제1제어장치를 구비하는 제1좌석, 회전가능하고 등받이 후면에 부착된 기준 디스플레이 장치와 팔걸이에 설치된 기준 제어장치를 구비하는 기준좌석, 및 회전가능하고 등받이 후면에 부착된 제2디스플레이 장치와 팔걸이에 설치된 제2제어장치를 구비하는 제2좌석을 구비하며, 상기 기준 디스플레이 장치는 상기 철도차량의 진행방향을 지시하는 방향지시신호에 기초하여 발생된 선택신호에 응답하여 상기 제1제어장치와 상기 제2제어장치 중에서 어느 하나의 제어장치와 무선통신을 하기 위한 무선통신채널을 형성하고, 형성된 무선통신채널을 통하여 상기 제1제어장치와 상기 제2제어장치 중에서 어느 하나의 제어장치와 소정의 데이터를 주고받는다.
Patent KR-20070053900-A (KR)
Inventor: JONG WOON EIK
IPC: G10B1/06
Filed: 2005-11-22
Abstract: 본 발명은 분수대의 노즐로부터 분출되는 물줄기를 이용해 오르겐을 연주하도록 이루어짐으로써, 관람객들의 다용한 욕구를 충족시켜줄 수 있는 분수를 이용한 오르겐 연주시스템을 제공하는데 그 목적이 있다. 
     이를 위해 본 발명에 따른 분수를 이용한 오르겐 연주시스템은, 저수조의 물을 펌핑하는 수중펌프(10)와, 수중펌프에 의해 펌핑된 물을 공중으로 분출하는 복수 개의 노즐(20)과, 수중펌프와 노즐을 연결하는 관로상에 각각 설치되어 노즐로 이송되는 물을 차폐하고 물의 양과 세기 등을 조정하는 조정밸브(40)와, 수중펌프 및 조정밸브의 작동을 제어하는 제어부(50)와, 노즐로부터 소정거리 이격된 위치에 설치되는 오르겐(60), 및 노즐로부터 분사되는 물의 압력에 의해 회동하여 오르겐의 건반을 타격하도록 된 타격대(70)를 포함하여 이루어진 것을 특징으로 한다. 
       
     수중펌프, 노즐, 조정밸브, 제어부, 오르겐, 타격대
Patent KR-20070032192-A (KR)
IPC: G02F1/1343
Filed: 2005-11-30
Abstract: 본 발명은 액정표시장치(LCD ; Liquid Crystal Display Device)에 관한 것으로, 특히 횡전계방식 액정표시장치 및 그 제조 방법, 그리고 액정패널의 구동방법에 관한 것이다. 
     본 발명에 따른 액정표시장치는 하부 기판과, 상부 기판과, 그 사이에 게재된 액정층으로 이루어지며, 적색 서브픽셀(red sub-pixel), 녹색 서브픽셀(green sub-pixel), 청색 서브픽셀(blue sub-pixel), 시야제어용 서브픽셀(viewing angle controlling sub-pixel)을 구비하고 있다. 
     본 발명에 따르면 사용자는 광시야각 모드 또는 협시야각 모드를 선택하여 구현할 수 있으며, 개인의 보안성을 향상시키고, 사용자에게 보안 범위에 대한 탄력성을 제공하며, 1인용 이상으로도 보안성을 확보하며 사용할 수 있다. 
     또한, 본 발명은 시야각 제어를 위하여 액정 패널 외부에 별도의 장치를 마련할 필요가 없이, 액정 패널 내부에 시야제어용 서프픽셀을 추가하여 시야각제어를 함으로써 공정이 단순하고 광효율이 우수한 장점이 있다. 
       
     광시야각, 협시야각, 횡전계방식, 수직 전계
Patent KR-20070057370-A (KR)
Title: The product method and current collector of fuel sell
Inventor: JO SUNG HWA
IPC: H01M8/02
Filed: 2005-12-02
Abstract: Provided is a current collector for a polymer electrolyte fuel cell, which prevents its manifold portion from being corroded even in the presence of water produced through the conversion from chemical energy into electric energy, and has improved quality. The current collector for a polymer electrolyte fuel cell comprises: a top plate having a manifold portion(12) formed of a plurality of rectangular holes(11) and a rim portion(18) forming a central cavity(19); a current collector plate(20) having a rectangular plate shape and including a manifold portion(22) corresponding to the manifold portion(12); and a bottom plate(30) having a manifold portion(32) corresponding to the manifold portions(12,22) of the top plate and the current collector portion, wherein the top plate and the current collector plate are bonded with each other through hot sealant(40) bonding, the current collector and the bottom plate(30) are bonded with each other through sealant(40) bonding, and the manifold portions(12,22,32) form a manifold assembly to have anti-corrosive, insulation and flame resistant properties.
Patent KR-20070059636-A (KR)
Title: Apparatus to retain the bearing of the transmission
Inventor: LEE DONG CHUL
IPC: F16H57/02
Filed: 2005-12-07
Abstract: A bearing supporting system for reducing vibration noise of a rotary shaft of a transmission is provided to reduce shock and vibration and improve durability by forming a fluid space part in a journal roller bearing. A bearing(2) is used for supporting a rotary shaft(1) of a transmission. A plurality of journal roller bearings(3) are installed rotatably on an outer circumference of the bearing in order to support the bearing. A shaft(4) of the journal roller bearing is supported by a gear housing(5). The journal roller bearing includes an external wheel contacting the bearing. A fluid space part(8) is formed between the journal roller bearing and the shaft supported by the gear housing.
Patent KR-20070066194-A (KR)
Title: Display apparatus
Inventor: KANG NAM SOO
IPC: G09G3/20
Filed: 2005-12-21
Abstract: A display apparatus is provided to reduce a PCB(Printed Circuit Board) size by implementing a single package, in which a gate scan driver, a DC/DC(Direct Current) converter, a common voltage generator, and an OP(OPerational) amplifier are embedded. A display apparatus includes a display panel(130), a timing controller(112), a data driving IC(Integrated Circuit), and an IC package(113). The timing controller outputs pixel data, and first and second control signals. The data driving IC drives data lines of the display panel in response to the pixel data and the first control signal. The IC package includes a gate scan driver(211), a voltage converter(212), and a common voltage generator(213). The gate scan driver outputs a driving control signal to drive gate lines of the display panel in response to the second control signal. The voltage converter converts a source voltage to an operating voltage which drives the timing controller and the data driving IC. The common voltage generator generates a common voltage to be supplied to the display panel.
Patent KR-20070067806-A (KR)
Title: Method for preparing of actuator material
Inventor: LEE GYU CHANG
IPC: H01L41/06
Filed: 2005-12-23
Abstract: A method for fabricating an actuator material is provided to cause stress-induced martensitic transformation of TiNi by martensitic stress of Ni by disposing TiNi in Ni in one direction such that the TiNi is parallel with the Ni. Ni as a martensitic material and TiNi as shape memory alloy are mixed by a spark plasma sintering method. The Ni as a martensitic material can be a powder phase having a purity of 99.9 percent and a size of 3~7 micrometers. The TiNi as the shape memory alloy can be a wire rod having Ti of 51.2 atom percent and a diameter of 0.384 mm. The Ni as the martensitic material and the TiNi as the shape memory alloy can be mixed at a volume ratio of 7:3 or 3:7.
Patent KR-20070068949-A (KR)
Title: A method of producing xylooligosaccharide using the novel bacteria bacillus substilis x2
Inventor: BAIK IN SUB
IPC: C12N1/20
Filed: 2005-12-27
Abstract: A method for producing xylooligosaccharide by using a novel bacterium Bacillus substilis X2 is provided to produce xylooligosaccharide, especially xylobiose as a disaccharide under mild conditions including medium temperature and pH. The method for producing xylooligosaccharide by using the novel bacterium Bacillus substilis X2 comprises the steps of: culturing Bacillus substilis X2 and obtaining the supernatant of the cultured medium; extracting xylanase from the supernatant; and reacting the extracted xylanase with a xylan substrate at 35-60 deg.C and pH 5-8. A cosmetic composition for moisturizing the skin comprises the xylooligosaccharide or xylobiose.
Patent KR-20070069228-A (KR)
Title: The footstep a combined tools box on forklift truck
Inventor: CHOI JAE HWA
IPC: B66F9/075
Filed: 2005-12-28
Abstract: A foot step combined with a tool box in a forklift truck is provided to function as a foot step capable of allowing an operator to safely get on and off the forklift truck when the assembled tool box cover is closed. A foot step combined with a tool box in a forklift truck includes an assembled tool box cover(20), a rail bracket(40), and a safety support(30). The assembled tool box cover is hinge-coupled to one side of the upper surface of a side wall surface of a frame body of the forklift truck so as to rotate an end of the side. The rail bracket includes a transfer passage. A fixing recess is formed on one side of a lower surface of the transfer passage. One end of the safety support is hinge-coupled to the fixing bracket. The other end of the safety support is connected to the transfer passage of the rail bracket to prevent the assembled tool box cover from being rapidly lowered.
Patent KR-20070069600-A (KR)
Title: Slide type mobile communication
Inventor: KIM HYUNG JIN
IPC: H04B1/38
Filed: 2005-12-28
Abstract: A slide type mobile communication terminal is provided to minimize a mounting space for an actuator as a lens cover is moved by using a piezoelectric actuator so as to automatically open/close a camera lens and also reduce power consumption for the movement of the lens cover. A slider(120) is installed at a front surface of a main body of a mobile terminal in such a manner that the slider can slide up by two stages, and has a lens hole formed at the first side of the slider. A camera is installed inside the slider(120) in such a manner that the camera lens corresponds to the lens hole. A lens cover(140) slides between the lens hole and the camera lens to open/close the camera lens. A piezoelectric actuator is installed at the lens cover(140) while making friction contact with the lens cover(140) in order to move the lens cover(140). A position detecting unit(150) detects if the slider slides up to the second stages. A controller(160) receives information detected by the position detecting unit(150), and when it is determined that the slider has slid up to the second stages, performs a control operation such that the lens cover(140) can move in a direction of opening the camera lens.
Patent KR-20070069647-A (KR)
Title: Inter-working mobile communication system and mobile communication terminal capable of service information notifying and service information notifying method
Inventor: CHO HAE YOUNG
IPC: H04L12/46
Filed: 2005-12-28
Abstract: A network interworking mobile communication system capable of supplying service information, a mobile communication terminal, and a service information supply method are provided to guide information on services available in a network where the terminal is currently registered, to a terminal user when the terminal moves between different networks, thus the user can easily check the available services. MSCs(Mobile Switching Centers)(24,34) store supportable service lists in network service tables to manage the stored lists, and search the tables according to a supportable service type confirmation request to notify of service information supportable in the current networks(20,30). A mobile communication terminal(50) demands supportable service type confirmation by using a predetermined message in case of initial location registration or after completing roaming between the networks(20,30), stores/manages service information supportable in the currently located network by updating service lists of a user service table, and checks the service lists to display the currently supported service information on a terminal screen.
Patent KR-20070070493-A (KR)
Title: Apparatus and method for exposing edge of substrate
Inventor: PARK JONG HO
IPC: H01L21/027
Filed: 2005-12-29
Abstract: An apparatus and a method for exposing an edge of a substrate are provided to shorten a time required to expose the edge of the substrate by using a long-side exposing unit and a short-side exposing unit. An exposing apparatus includes a loading part(110) for loading a substrate and an edge exposing part(120) for exposing an edge of the wafer which is loaded by the loading part with a long-side exposing unit and a short-side exposing unit. A stage supports the substrate loaded by the loading part, and is moved in a first direction by a driving shaft. The driving shaft is guided by a rail. The wafer is exposed by the long-side exposing unit and the short-side exposing unit.
Patent KR-20070071141-A (KR)
Title: Clock generator having frequency multiplying function based delay locked loop
Inventor: KIM CHUL WOO
IPC: H03L7/00
Filed: 2005-12-29
Abstract: A clock generator is provided to match a phase of a multiplied clock signal with a phase of a reference clock signal. A clock generator includes a DLL(Delay Locked Loop)(110), a voltage controlled delay unit(115), and a frequency multiplier(120). The DLL includes plural first delay stages which are series-connected to each other and input a reference clock signal. The DLL compares an output signal from the last delay stage with the first clock signal and adjusts the delay time of the first delay stages based on the compared result. The voltage controlled delay unit includes plural second series-connected delay stages. The voltage controlled delay unit compares the output signal from the DLL with an output from the last delay stage of the second delay stages and adjusts the delay time of the second delay stages based on the compared result. The frequency multiplier generates a multiplied clock signal having a pulse corresponding to a delay time between an output signal and a complementary output signal which is received from the voltage controlled delay unit.
Patent KR-20070072182-A (KR)
Title: Fabrication method of liquid crystal display device
Inventor: SHIN DONG SU
IPC: G02F1/136
Filed: 2005-12-30
Abstract: A manufacturing method of an LCD(Liquid Crystal Display) is provided to manufacture a device by means of an etch stopper without a separate mask process. A gate electrode(103) is formed on a substrate. An insulation layer(107), a semiconductor layer(109) and an etch stopper layer(111) are formed on the gate electrode. The etch stopper layer and the semiconductor layer are patterned. Both side portions of the etch stopper layer are removed so that a portion of the semiconductor layer is exposed. A conduction layer is formed on the entire surface of the substrate. The conduction layer is patterned so that the source/drain electrodes and a channel region are formed. A passivation layer having a drain electrode contact member is formed on the entire surface of the substrate. A pixel electrode is formed on the passivation layer and contacted with the drain electrode through the contact hole.
Patent KR-20050030206-A (KR)
Title: Resin composition containing ultrafine inorganic particle
Inventor: HAYASHI TOYOHARU
IPC: C09D4/00
Filed: 2003-07-17
Abstract: A composition in which refractive index control is possible and which, when applied to a substrate such as a resin and cured, gives a film excellent in marring resistance and adhesion (especially to resins having thiourethane bonds or epithiosulfide bonds). The composition is characterized by containing: a thio(meth)acrylate compound and ultrafine inorganic particles. (1) (In the formula, connecting group R represents an aliphatic residue, aromatic residue, alicyclic residue, or heterocyclic residue or an aliphatic residue having in the chain an oxygen atom, sulfur atom, aromatic ring, aliphatic ring, or heterocycle; Rm's each independently represents hydrogen or methyl; and n is an integer of 1 to 4.)
Patent KR-20050099494-A (KR)
Title: Fluorinated monomers, fluorinated polymers having polycyclic groups with fused 4-membered heterocyclic rings, useful as photoresists, and processes for microlithography
Inventor: FEIRING ANDREW E
IPC: C08F214/26
Filed: 2003-08-08
Abstract: The present invention provides novel fluorine-containing copolymers which comprise at least one fluorinated olefin, at least one polycyclic ethylenically unsaturated monomer with a fused 4-membered heterocyclic ring and, optionally, other components. The copolymers are useful for photoimaging compositions and, in particular, photoresist compositions (positive-working and/or negative-working) for imaging in the production of semiconductor devices. The copolymers are especially useful in photoresist compositions having high UV transparency (particularly at short wavelengths, e.g., 157 nm) which are useful as base resins in resists and potentially in many other applications.
Patent KR-20050123087-A (KR)
Title: Semiconductor device
Inventor: KUROIWA KOICHI
IPC: G06F9/00
Filed: 2003-03-31
Abstract: A processor (1) having an instruction memory (2) supplies address specification information and setting values for setting registers (REGA to REGD) to a setting interface unit (3). According to the address specification information, a register address value is output from an address output unit (5). The output address value and the setting value are output to the register to set a setting value, so that the processor can set a setting value in the register without considering the register address. Thus, it is possible to reduce the address specification portion of each register in the instruction code and reduce the instruction code amount as well as facilitate the coding of the instruction codes.
Patent KR-20050086550-A (KR)
Title: Acoustic wave type contact detector
Inventor: TANAKA YOSHIKAZU
IPC: H05K1/02
Filed: 2003-11-11
Abstract: An FPC (4) comprises branch lines (4a, 4b) and a link line (4c) being connected with a controller (6). Out of ten print lines (64) of the link line (4c), four print lines (64d-64g) are receiving lines connected, as sensors, with converters (12, 14), and ground (earth) print lines (64c, 64h) are arranged on the opposite sides of these print lines (64d-64g). Signal lines (64b, 64i) are arranged on the outer side of the ground print lines (64c, 64h), and ground print lines (64a, 64j) are arranged further on the outer side thereof thus forming a shield surrounding the signal lines. That relation is retained even with the branch lines (4a, 4b).
Patent KR-20050072148-A (KR)
Title: Transport car for metal coils
Inventor: ZUG JOSEF
IPC: B21C47/24
Filed: 2003-10-30
Abstract: The invention relates to a transport car in a supply unit for metal coils, comprising a chassis (2) which may be displaced along the supply path (1) by means of a drive, with means for raising and lowering a carrying saddle (4) along a linear vertical guide (5) on a base frame (3). The coil transport car construction can be improved, whereby, for example, a steel slab is used as a plate-like base frame (3) on which a scissors-type lifting gear (6) is arranged as linear vertical guide (5) and, for raising and lowering the carrying saddle (4), two directly acting lifting cylinders (7) are arranged thereon as drive with opposing separations.
Patent KR-20050085513-A (KR)
Title: Method and device for extractive distillation
Inventor: HEIDA BERND
IPC: C07C7/08
Filed: 2003-12-11
Abstract: The invention relates to a method for separating an initial mixture (A) consisting of at least two components by means of extractive distillation using a selective solvent (s) in a separation column (TKW) provided with a separation baffle. Said invention is characterised in that the inventive method is carried out in the separation column (TKW) provided with the separation baffle (TW) which is disposed in the direction of the length of the column, extends to the top end thereof and divides the inside of the column into a first partial area (1), a second partial area (2) and a common lower area (3), the initial mixture (A) is introduced into said first partial area (1), a first head flow (B) is extracted therefrom, the second head flow (c) is extracted from the second partial area (2), said flows exhibiting the predefined characteristics, the selective solvent (S) is distributed in the top section of the first partial area (1) and/or in the top section of the second partial (2), and than the quantity of the selective solvent (S1) distributed in the first partial area (1) and the quantity of the selective solvent (S2) distributed in the second partial area (2) are controlled in such a way that said predefined characteristics for each head (B, C) flow are respected, respectively.
Patent KR-20050085878-A (KR)
Title: Electronic component and electronic apparatus using this electronic component
Inventor: TAKAYAMA RYOUICHI
IPC: H03H3/10
Filed: 2003-12-24
Abstract: An electronic component for improving temperature characteristics and electric characteristics, comprising a substrate (1), an interdigital electrode (2) provided on the top surface of the substrate (1), and a protection film (4) covering the interdigital electrode (2) and having an irregular shape on the top surface thereof. When the pitch width per pitch of the irregular shape of the protection film (4) is L, the width of the projection (4a) of the irregularity per pitch of the irregular shape of the protection film (4) L1, the width of a recess (4b) L2, the pitch width per pitch of the interdigital electrode (2) p, a width per electrode digit constituting the interdigital electrode (2) p1, and a width between electrode digits p2, respective parameters are set so as to satisfy the relations L1= p2 (L congruent to p, p1+p2=p, L1+L2=L).
Patent KR-20050092034-A (KR)
Title: Dual redundant gps anti-jam air vehicle navigation system
Inventor: LOEGERING GREGORY SCOTT
IPC: G01S1/00
Filed: 2003-12-17
Abstract: A navigation system for an unmanned aerial vehicle, the navigation system comprising a first antenna for receiving a global positioning system signal, a first interference suppression unit coupled to the first antenna, the first interference suppression unit suppressing interference in the global positioning system signal using a first interference suppression technique, a first navigation unit for receiving signals from the first interference suppression unit, a second antenna for receiving the global positioning system signal, a second interference suppression unit coupled to the second antenna, the second interference suppression unit suppressing interference in the global positioning system signal using a second interference suppression technique, and a second navigation unit for receiving signals from the second interference suppression unit. A method for controlling the flight of an air vehicle performed by the apparatus is also included.
Patent KR-20060034204-A (KR)
Title: Data transmission device and data transmission method
Inventor: KAWADA HIROTSUGU
IPC: H04L25/49
Filed: 2004-02-10
Abstract: A signal reception section (11) receives an analog signal via a twisted pair cable (31). An A/D converter (12) converts the analog signal into a digital signal. A phase detector (14) detects a phase of the digital signal and generates a reception timing signal. According to the reception timing signal, a transmission timing generation section (15) controls the timing when a transmission processing section (16) outputs the digital signal so that a predetermined phase difference is present between the reception signal (point A) and the transmission signal (point D). According to this timing, the transmission processing section (16) outputs the digital signal which has been subjected to data mapping and input from a connection device (20). A D/A converter (17) converts the digital signal into an analog signal. A signal transmission section (18) transmits the analog signal via a twisted pair cable (32).