baber/WOPTO huggingface dataset:
Patent KR-20060020731-A (KR)
Inventor: KIM JAE HYUNG
IPC: G06Q50/10
Filed: 2006-02-20
Abstract: 본 발명은 유선 게임 데이터를 무선 게임 상에 적용하는 방법 및 시스템에 대한 것으로써, 본 발명에 따른 방법은, 클라이언트 소유 무선 단말기로 게임 제공 전에, 게임 서버에서 상기 클라이언트의 유선 게임 상에서의 게임 계정을 확인하는 단계와, 상기 게임 서버에서 상기 확인된 게임 계정에 대응하는 상기 클라이언트의 유선 게임 상에서 이용하거나 또는 획득한 게임 캐릭터 특성 및/또는 게임 수치(게임 점수 등)를 추출하는 단계 및 상기 게임 서버에서 상기 추출된 상기 클라이언트의 유선 게임 상에서 이용하거나 또는 획득한 게임 캐릭터 특성 및/또는 게임 수치(게임 점수 등)가 포함된 게임 데이터를 통신망을 통해 상기 무선 단말기로 제공하는 단계를 포함한다.  
       
     온라인 게임, 무선 단말기
Patent KR-20060094877-A (KR)
Inventor: KATSUNO MOTONARI
IPC: H04N5/369
Filed: 2006-02-21
Abstract: 고체 촬상장치는 촬상영역에 2차원적으로 배열되는 다수의 광전변환소자, 배선 패턴에 의해 상기 광전변환소자에 입사되는 외부 광의 양을 조정하는 광 차단막, 적층방향(lamination direction)으로 상기 광 차단막과 상기 광전변환소자 사이에 위치한 배선층, 및 상기 광 차단막을 상기 배선층에 전기적으로 연결하는 다수의 콘택을 포함한다. 광 차단막의 형상은 하나의 제 2 형상과 중첩하는 다수의 제 1 형상에 의해 정의되고, 제 1 형상 각각은 평면도에서 서로 다른 콘택 위에 위치하고, 상기 제 2 형상은 각각 다른 광전변환소자에 대응하는 다수의 애퍼쳐(aperture)를 구비한다. 제 2 형상의 각 애퍼쳐의 중심은, 상기 촬상영역의 중앙으로부터의 거리가 증감함에 따라, 평면도에서 대응하는 광전변환소자의 중심으로부터 상기 촬상영역의 중앙 쪽으로 더 멀리 위치한다. 또한, 상기 제 2 형상에 대한 상기 제 1 형상의 위치 관계는 상기 촬상영역에서의 위치에 따라 다르다. 
       
     촬상소자, 촬영, CCD, 이미지 센서, 감도, 쉐이딩, 셰이딩
Patent KR-20070084811-A (KR)
Title: Remote type monitoring system and method for controlling of the same
Inventor: LEE HOON BONG
IPC: H04Q9/00
Filed: 2006-02-22
Abstract: A remote monitoring system and a controlling method thereof are provided to apply a monitoring period differentially according to a response state during RF(Radio Frequency) communication having a lot of power consumption, thereby minimizing the power consumption. Home appliances(200,300) have communication modules for perceiving operation states according to a user's request to control corresponding operation according to monitoring information transmitting/receiving commands. A monitoring module(100) receives and displays monitoring information received from the home appliances at preset periods according to the user's request, is capable of controlling the user's desired request command in detail by sending the command to the home appliances, and selectively controls power supply according to monitoring degrees received from the home appliances in accordance with a random monitoring command.
Patent KR-20060106663-A (KR)
Inventor: YOSHIKAWA HIROYASU
IPC: G11B7/0065
Filed: 2006-03-06
Abstract: 본 발명의 과제는 광학계의 광학 특성을 높이지 않고도 홀로그램의 기록량을 용이하게 증대시킬 수 있는 홀로그램 기록 장치를 제공하는 것이다.   
     광원(1)으로부터 출사한 간섭광을 기록광(S)과 참조광(R)으로 분리하는 동시에, 상기 기록광(S)을 공간 광변조기(5)에 의해 기록해야 하는 정보에 따른 광으로 변조한 후에 대물 렌즈(7)로 유도하고, 상기 대물 렌즈(7)로부터 출사하는 기록광(S)과 상기 참조광(R)을 홀로그램 기록 매체(B) 상에서 간섭하게 함으로써, 상기 홀로그램 기록 매체(B)에 홀로그램을 기록하는 홀로그램 기록 장치(A)이며, 공간 광변조기(5)의 입사면에는 기록광(S)을 투과하면서 상기 기록광(S)의 위상을 군데군데에 있어서 변화시키는 위상 시프트 마스크(5A)가 설치되어 있다.   
       
     광원, 기록광, 공간 광변조기, 대물 렌즈, 시프트 마스크
Patent KR-20070096575-A (KR)
Title: Reflector sheet, method for manufacturing thereof, back light assembly having thereof and liquid crystal display device having the same
Inventor: KIM SEUNG MO
IPC: G02F1/13357
Filed: 2006-03-27
Abstract: A reflective sheet, a manufacturing method thereof, a backlight assembly including the same, and an LCD including the same are provided to improve brightness uniformity of the backlight assembly by including an oval bubble having a horizontal long axis in a reflective sheet and increasing a reflection angle in a horizontal direction . A reflective sheet(300) includes a white resin layer and oval bubbles formed in the resin layer and formed in a horizontal long axis. A length of the long axis of the bubble ranges from 30 m to 80 m. The bubbles are distributed with a volume density of 15% to 30% with respect to the resin layer. The resins layer is formed of a PET(polyethyleneterephthalate) material.
Patent KR-20070097711-A (KR)
Title: Plasma display and driving method thereof
Inventor: KIM HEE HWAN
IPC: G09G3/296
Filed: 2006-03-29
Abstract: A plasma display device and a driving method thereof are provided to reduce brightness deviation by generating different subfield data according to load rate of subfields. A load rate at respective subfields is calculated in plural image data inputted from outside during one frame(S510). A subfield having a first load rate range is determined(S520). At least one first image data, which the subfield having the first load rate range is utilized, are converted to subfield data using a first method. At least one second image data of image data other than the first image data among the plural image data are converted to subfield data using a second method different from the first method(S530-S550).
Patent KR-20070097768-A (KR)
Title: Adhesive attach machine for fix flexible printed circuit board on main printed circuit board
Inventor: HAN DONG HEE
IPC: H05K13/02
Filed: 2006-03-29
Abstract: A double-sided adhesive tape attaching device is provided to attach the double-sided adhesive tape on plural FPCBs while loading and unloading the PCBs on and from a single rotational table. A working table(2) has a working surface. A first rotational table(4) includes plural stages, on which plural FPCB(Flexible Printed Circuit Boards) are loaded. A second rotational table(8) is arranged to be apart from the first rotational table and has a rotational surface higher than the first rotational table. A tape attaching unit(10) is arranged on the second rotational table and moved along the second rotational table. The tape attaching unit includes an attaching head for attaching a double-sided adhesive tape on the FPCB, which is loaded on the stage. A tape feeder(14) is arranged outside the second rotational table and supplies the double-sided adhesive tapes in one direction, such that one of the double-sided adhesive tapes is sucked in by the attaching head. A display unit(24) inverts a position of the FPCB by using an inverting head, which is arranged on a rotational arm. The display unit irradiates a laser beam on an opposite surface, such that a unique ID of the FPCB is recognized.
Patent KR-20070099377-A (KR)
Title: Structure of social stwind a windmill
Inventor: PARK JAE WON
IPC: H02K7/18
Filed: 2006-04-03
Abstract: A structure of a multi-stage windmill is provided to rotate a rotary wheel using wind power energy generated through the rotary wheel having blades installed at a rotary wheel disk. A structure of a multi-stage windmill includes a first housing(10'), a second housing(10"), a third housing(10), a cylindrical vertical shaft, and a rotary wheel(30). The first housing accommodates a first generator. The second housing accommodates a second generator. The third housing accommodates the first and second housing to operate the first and second generators. Front end and rear ends of the first and second housings are supported on the cylindrical vertical shaft by shaft end bearings. The rotary wheel has semi-circular blades installed at a semi-circular rotary disk.
Patent KR-20070100553-A (KR)
Title: Manufacturing method of coating gloves with pleats and the coating gloves with pleats by the method
Inventor: KANG YOUNG CHOON
IPC: A41D19/04
Filed: 2006-04-07
Abstract: A manufacturing method of rubber coated gloves with pleats and rubber coated gloves with pleats made by the same are provided to obtain rubber coated gloves having good ventilation to prevent user's hands from getting moist with perspiration. A manufacturing method of rubber coated gloves with pleats includes: a pre-treatment step of depositing gloves in a pre-treatment solution in which 2-5 parts by weight of water soluble calcium salts are dissolved in 100 parts by weight of alcohol solvent for 2-5 seconds; a bubble forming step; a coating step of depositing gloves on which pretreatment is performed in a coating solution for 2-5 seconds to be coated with rubber and drying the rubber coated gloves at 70-120 deg.C for 1-3 minutes; a pleat forming step; and an after-treatment step of removing water soluble calcium salts by depositing coating gloves in a washing tank several times and drying the gloves at 100-120 deg.C for 30-50 minutes.
Patent KR-20060054238-A (KR)
Inventor: KIM CHUL HO
IPC: G06Q20/24
Filed: 2006-04-17
Abstract: 본 발명은 가맹점별 세부 정보를 수집하고 이에 근거하여 가맹점의 규모, 거래량, 업종별로 객관적인 MDR 책정 기반을 제공할 수 있는 분산 가변 가맹점 수수료율 설정에 따른 신용카드 결제 처리 시스템에 관한 것으로서, 본 발명에 의한 방법은 결제대행서버에 가맹점 가입을 신청한 소정 사업자의 세부 정보를 입력하고, 결제 대행 서버에서 상기 입력된 세부정보에 근거하여, 상기 사업자를 가맹점으로 등록하면, 가맹점별 등록된 세부정보로부터 카드사에 책정된 발급 비용 및 매입비용에 근거한 기본 수수료율r 0 와, 가맹점별 특성에 따라서 가변될 수 있는 가변수수료율Δr을 산정하고, 상기 기본 수수료율r 0 과 가변수수료율Δr을 합산하여 가맹점 수수료율(MDR)을 산정하고, 가맹점에서 발생된 신용거래에 대한 매입 관련 데이타를 수집하여, 매입 내역을 확정하고, 상기 확정된 매입내역에 상기 산정된 가맹점의 수수료율(MDR)을 적용하여, 수수료를 계산하여 정산한 후, 상기 수수료를 가맹점, 결제대행사, 카드사측에 적절히 분배할 수 있도록 한 것이다. 
       
     신용카드, 결제 대행, 가맹점 수수료율(MDR), 매입, 가맹점 등록, 로얄티 포인트
Patent KR-20070109239-A (KR)
Title: Backlight unit and method for manufacturing the unit
Inventor: SONG YOUNG JEA
IPC: G02F1/13357
Filed: 2006-05-10
Abstract: A backlight unit and a manufacturing method thereof are provided to form a plurality of LED(light emitting diodes) grooves and a plurality of electrode grooves in a top surface of a lower glass, apply an adhesive agent to the LED grooves and fix an LED on the adhesive agent and stack an upper glass to the lower glass to achieve a slim backlight unit. A plurality of LED grooves and electrode grooves are formed in a top surface of a flat lower glass(S100). An electrode pattern supplying a current to an LED is formed at the electrode grooves(S110). An adhesive agent is applied to the LED grooves(S120). The LED is fixed onto the adhesive agent applied to the LED groove(S130). A flat upper glass is stacked on the top surface of the lower glass. A diffusion pattern diffusing light emitted from the LED is formed on the top surface of the upper glass(S140).
Patent KR-20070113532-A (KR)
Title: Parmaceutical composition for preventing restenosis comprising berbamine as active ingredient
Inventor: YUN YEO PYO
IPC: A61K31/4353
Filed: 2006-05-25
Abstract: A composition comprising berbamine is provided to prevent restenosis after stent implantation without side effects by inhibiting propagation of vascular smooth muscle cell due to berbamine, thereby being widely utilized as a safer treatment of coronary artery diseases. A pharmaceutical composition for preventing restenosis comprises berbamine represented by the formula(1) as an effective ingredient and a pharmaceutically acceptable carrier. The composition is in the form of a capsule agent, a liquid agent, an injection agent, a soft capsule agent, a granule agent and a tablet.
Patent KR-20070119919-A (KR)
Title: Manufacturing apparatus for liquid crystal display
Inventor: BAE KYOUNG JEONG
IPC: G02F1/13
Filed: 2006-06-16
Abstract: A apparatus for fabricating an LCD is provided to improve durability of a chamber sidewall and prevent generation of fine particles by forming a Y2O3 coating layer that prevents direct etching of a lower container and capture fine particles generated during an etching process on an inner surface of a sidewall of the lower container. A lower container(100) and an upper container(200) provides a reaction space. A Y2O3 coating layer is formed on a sidewall of the lower container and/or the upper container. The Y2O3 coating layer has a thickness of approximately 150 mum or less. A dry etching apparatus(400) or a chemical vapor deposition apparatus is used as a fabrication apparatus for the LCD.
Patent KR-20060076267-A (KR)
Inventor: KAWANAMI YOSHIMI
IPC: G09G3/296
Filed: 2006-06-16
Abstract: 플라즈마 디스플레이 패널을 사용한 플라즈마 디스플레이장치에 관한 것으로서, 방전전류의 분포를 발광효율의 분포와 대응시키는 방향에서 종래기술에 있어서의 방전전류의 최대값의 시각 이전의 방전전류를 작게 하여 PDP의 발광효율을 향상시키고 PDP의 소비전력을 저감할 수 있는 플라즈마 디스플레이장치를 제공하기 위해, 여러개의 방전셀내에서 유전체를 거쳐서 플라즈마를 형성하는 유지 방전전극쌍이 동일 기판상에 마련된 플라즈마 디스플레이 패널을 갖는 플라즈마 디스플레이장치에 있어서, 1방전에 있어서의 방전전류의 최대값의 5%이상의 방전전류값을 갖는 기간을 1방전기간으로 했을 때, 1방전기간의 최초부터 40%까지의 기간에 있어서의 방전전류의 적분값은 그 이후의 기간에 있어서의 방전전류의 적분값보다 작은 것으로 하였다. 
     이와 같이 하는 것에 의해, PDP의 발광효율의 향상이 가능하게 되어 PDP의 소비전력을 저감할 수 있다는 효과가 얻어진다.   
       
     플라즈마 디스플레이 패널, 유지 방전전극, 발광효율, 투명전극 및 불투명전극, 격벽
Patent KR-20080000939-A (KR)
Title: Thin film solar cell being able to control input light intensity
Inventor: KIM BUM SUNG
IPC: H01L31/0445
Filed: 2006-06-28
Abstract: A thin film solar cell capable of controlling optical transmission is provided to produce a power by wiring top electrode layers positioned at both ends of solar cells which are connected in series to each other. A solar cell consisting of a transparent conductive layer(202), a semiconductor layer(203) and a top electrode layer is connected in series to another solar cell. The top electrode layers positioned at both ends of the solar cells connected to each other in series are wired to control the translucency. Each solar cell has a predetermined cut interval for optical transmission. A cut depth of the cut interval extends from the top electrode layer to the semiconductor layer, and a cut direction of the cut interval is a direction along which the solar cells are separated.
Patent KR-20080001050-A (KR)
Title: System for driving lcd backlight comprising leds
Inventor: LEE SANG YUN
IPC: F21V23/00
Filed: 2006-06-29
Abstract: A system for driving an LCD backlight is provided to integrate a plurality of color LED DC-DC converters into a single body within an SMPS(Switch Mode Power Supply) unit, thereby reducing the number of components. A light source unit(23) includes a substrate(231) where a red LED array, a green LED array, and a blue LED array are arranged. An SMPS unit(21) includes an AC-DC converter(211) for converting an externally inputted AC voltage to a DC voltage, a red LED DC-DC converter(212), a green LED DC-DC converter(213), and a blue LED DC-DC converter(214). A control board(22) includes a red LED constant current controller(221), a green LED constant current controller(222), and a blue LED constant current controller(223).
Patent KR-20080003025-A (KR)
Title: Self-refresh control circuit for semiconductor memory device
Inventor: KIM TAE KYUN
IPC: G11C11/402
Filed: 2006-06-30
Abstract: A self-refresh control circuit for a semiconductor memory device is provided to reduce current consumption, by controlling on/off of a periodic signal used to select a self refresh period according to temperature. An automatic period generation part(100) generates periodic signals with various periods. A temperature sensor part(200) detects internal temperature and provides a temperature detection signal. A selection part(500) provides one of the periodic signals as a periodic output signal to generate a self refresh command signal controlling self refresh operation.
Patent KR-20080003590-A (KR)
Title: Plasma display panel
Inventor: AHN JUNG KEUN
IPC: H01J11/38
Filed: 2006-07-03
Abstract: A plasma display panel is provided to restrain the migration of silver and to improve the lifetime of display panel by varying a softening temperature of dielectrics formed on a display area and a non-display area. A first substrate and a second substrate are arranged to be separated form each other. The first and second substrates face each other. The first and second substrates are divided into a display area(DA), a non-display area(ND11), and a terminal area(TA11,). The display area is positioned on a center of the first and second substrates. The non-display area is formed on the outer of the display area. The terminal area is formed on the outer of the non-display area. A barrier rib is arranged between both substrates to divide discharge cells. A fluorescent substance layer is formed in the discharge cell. An address electrode(11) is formed along the first direction on the first substrate. A dielectric(13) is formed on the first substrate to cover the address electrode. A first electrode and a second electrode are formed side by side along a second direction intersected with the first direction on the second substrate. The dielectric includes a first region(113) and a second region(213). The first and second regions have a different softening temperature. The first region is formed on the display area. The second region is formed on the non-display area.
Patent KR-20080004937-A (KR)
Title: Electrolyte for improving storage performance at high temperature and lithium secondary battery comprising the same
Inventor: LEE YUN HO
IPC: H01M10/0567
Filed: 2006-07-07
Abstract: An electrolyte for a battery is provided to form uniform solid electrolyte interface film, to inhibit the collapse of the solid electrolyte interface film during high-temperature storage, and to improve performances of a battery such as life and high-temperature storage characteristics. An electrolyte for a battery includes (a) an electrolytic salt, (b) an electrolytic solvent, and (c) at least one compound selected from a compound represented by the following formula 1 and a compound represented by the following formula 2. In the formulae, R is hydrogen or a C1-C6 lower alkyl group, and n is an integer of 0-4. The at least one compound(c) is contained in an amount of 0.01-10 parts by weight per 100 parts by weight of the electrolyte.
Patent KR-20060130520-A (KR)
Title: Robot system with manu selection card having printed manu code and figure
Inventor: KIM KYOUNG JIN
IPC: G06K17/00
Filed: 2006-07-10
Abstract: A robot system equipped with a menu selection card including a menu code and a picture is provided to enable a user to correctly select information for various selection menus, such as an operation command, multimedia contents, and a remote control command for other devices, at once, and transfer the selected information to a home robot or a remote home robot server. The menu selection card(13) includes fine codes corresponding to each menu selectable in the robot system and the pictures corresponding to the menus. An optical reader(12) recognizes the fine code corresponding to the specific picture if the user selects the picture from the menu selection card. A robot main frame(11) performs a process or an operation corresponding to the code by receiving the fine code recognized in the optical reader.
Patent KR-20080005752-A (KR)
Title: Plug type power supply unit
Inventor: ZHOU ZHENGHONG
IPC: H01R13/10
Filed: 2006-07-10
Abstract: A plug type power supply device is provided to improve the structural configuration, thereby realizing a small volume and a portable size, improving heat irradiation performance, and meeting the requirements of various safety standards and EMC(Electro-Magnetic Compatibility) regulations. A plug type power supply device comprises a case(100) having a front wall(130), an input part(150) fixed onto the front wall of the case, a low voltage connection line(200) connected to a rear portion of the case, and a PCB(Printed Circuit Board) installed within the case and having a switching mode power supply circuit. The switching mode power supply circuit includes a transformer for transforming energy and a condenser for smoothing an input voltage. The input part and the low voltage connection line are connected to the PCB. All cross-sections of the PCB and elements of the PCB, which are parallel with the front wall of the case, are projected on a plane having the front wall, within a range of the front wall of the case. A configuration of the front wall corresponds to or complies with cross-sectional configurations of Korean type plugs according to Korean plug standard, KSC8305.
Patent KR-20070011166-A (KR)
Title: Core and inductor having the core
Inventor: KAMIO YUICHI
IPC: H01F27/24
Filed: 2006-07-19
Abstract: A core and an inductor having the same are provided to protect a contact error by improving a fixation intensity of components in a substrate. A convex portion(52) is extruded from an end portion of a core. The convex portion includes a peak surface portion(52c) and a step portion. The peak surface portion is formed at the end portion. The step portion is formed between an external edge of the peak surface portion and the end portion of the core. An electrode portion(53) having a conductive film is formed on the surface of the peak surface portion and the step portion. The external edge of the peak surface portion between the peak surface portion and the step portion is formed with an R shape.
Patent KR-20080009619-A (KR)
Title: Automatic parking space confirmation
Inventor: NO HONG JONG
IPC: G08G1/14
Filed: 2006-07-28
Abstract: An automatic parking space checker is provided to display the number of allowable parking vehicles by installing two pairs of lasers and detectors at an entrance and an exit every floor, so a driver recognizes the allowable parking through a display. A parking space checker is installed at an entrance of a parking place on the ground. Two pairs of lasers(2b) and detectors(2a) are installed at an entrance and an exit every floor in such a way that the laser radiates a light to the detector. If a vehicle(3) passes the lasers at the entrance, the detectors recognize passing of the vehicle, and then a number -1 is displayed on a display. If the vehicle passes the lasers at the exit, the detectors recognize passing of the vehicle, and then a number +1 is displayed on the display.
Patent KR-20080011793-A (KR)
Title: Button of elevator door
Inventor: YANG KI HO
IPC: B66B1/46
Filed: 2006-07-31
Abstract: A door open/close button of an elevator is provided to improve convenience by enabling a user to open and close a door of an elevator using one button. A door open/close button of an elevator comprises: an open/close button and a controller. The controller is programmed to open a door while the door is closed or closing when the open/close button is pushed and to close the door while the door is opening or opened.
Patent KR-20070018687-A (KR)
IPC: B32B3/30
Filed: 2006-08-04
Abstract: 홀로그램을 구성하는 요철을 엠보싱 가공에 의해 용이하게 형성할 수 있고, 또한 열 실링에 의한 파우치 가공 등의 2차 가공성이 뛰어난 홀로그램용 폴리프로필렌계 적층 필름을 제공한다. 
     폴리프로필렌계 수지로 이루어지는 기재층의 적어도 한쪽 면에, 연속 승온 용출 분별법(TREF)에 의한 용출 온도-용출량 곡선에 있어서 최대 피크인 피크 탑 온도(Tp)가 70∼100℃에 존재하고, 또한 이 피크의 반치폭이 10℃ 미만인 프로필렌계 공중합체로 이루어지는 표면층을 적층하여 이루어지는 적층 필름으로서, 이 표면층의 표면에 홀로그램을 구성하는 요철이 엠보싱 가공에 의해 형성된 것을 특징으로 하는 폴리프로필렌계 적층 필름이다.  
       
     적층, 필름, 폴리프로필렌, 연속 승온 용출 분별법, 엠보싱, 홀로그램, 요철, 공중합체, 성형체
Patent KR-20080013369-A (KR)
Title: Wireless headset
Inventor: LEE YOUNG SOON
IPC: H04R1/10
Filed: 2006-08-08
Abstract: A wireless headset is provided to decrease a size of the wireless headset by enabling a user to insert earphones into the wireless headset, when the headset is not used. A wireless headset includes first and second headset units. The second headset unit is electrically connected to the first headset unit. Each of the first and second headset units includes a main body(120), an earphone(110), and an earphone position guide structure. The earphone is contained inside the main body. The earphone position guide structure is applied between the main body and the earphone and guides a moving path of the earphone. At least one of the first and second headset units is configured to communicate with a center device.
Patent KR-20070061273-A (KR)
Title: Apparatus and method of oam fault notification in ethernet networks
Inventor: KIM DO YEON
IPC: H04L12/26
Filed: 2006-08-21
Abstract: An apparatus and a method for informing about an OAM(Operation, Administration and Maintenance) failure in an Ethernet are provided to construct a carrier Ethernet as well as an LAN and a metro network with guaranteed connectivity by providing an Ethernet OAM failure notification function. An MEP(Maintenance End Point) of a physical layer level periodically generates a CC(Continuity Check) frame for checking a connection state of an Ethernet(S210). Each MEP checks whether the CC frames generated by different MEPs have been normally received(S220). If a CC frame is not received, the MEP periodically generates an AIS(Alarm Indication Signal) frame and transmits it to a client equipment of the opposite side of a failure-occurred point(S230). Upon receiving the AIS frames, the MEPs transmit the AIS frames to an adjacent node of an upper level(S240,S250). When the MEP has received the AIS frame, it transmits the AIS frame to an adjacent node of a level to which the MEP itself belongs(S260,S270). The process is repeatedly performed until the AIS frame reaches a client level(S280). When the AIS frame reaches the client level and a failure generation is notified, a failure verification is performed and a necessary measure is taken(S290).