baber/WOPTO huggingface dataset:
Patent KR-19990087775-A (KR)
Title: 컴퓨터 단층촬영 링 억제필터
IPC: G06T11/00
Filed: 1997-02-25
Abstract: 컴퓨터 단층촬영 시스템에 사용된 링 억제필터(74)는 고역필터(312), 히스토그램 발생기(318)와, 조합기(322)를 포함한다. 고역필터(312)는 각 프로젝션 데이터 신호(PDS)에 대하여 고주파 성분을 나타내는 에러신호(ES)를 발생한다. 히스토그램 발생기(318)는 프로젝션 데이터 신호(PDS)로 에러신호(ES)에 관련된 히스토그램(HIST)을 발생한다. 조합기(322)는 에러신호(ES)와 히스토그램(HIST)을 조합하여 링 보정신호(RCS)를 발생한다.
Patent KR-20000005027-A (KR)
Title: Solution polymerization process with dispersed catalyst activator
Inventor: SPENCER LEE
IPC: C08F4/02
Filed: 1997-03-12
Abstract: PURPOSE: A dispersible ionic catalyst activator is provided, which is useful for solution polymerization using an aliphatic solvent such as condensed alpha-olefin monomer, and an aromatic solvent. Also, a new form of ionic catalyst activator is provided, which is particularly adapted for a continuous solution polymerization reaction where controlled, metered addition of specific quantities of such activator is required. CONSTITUTION: The dispersible ionic catalyst activator comprises an insoluble substrate material having a correlated settling rate less than 0.03 cm/sec, and from 0.001 to 10 mmol/g of an ionic catalyst activator deposited thereon. The solution polymerization comprises contacting one or more alpha-olefins, optionally in the presence of an inert aliphatic, alicyclic or aromatic hydrocarbon, with a catalyst system comprising the dispersible ionic catalyst activator.
Patent KR-20000010573-A (KR)
Title: Data carrier card
Inventor: STOLL FRANK
IPC: G06K19/077
Filed: 1997-04-17
Abstract: PURPOSE: Disclosed is a data carrier card having a card base structure with a recess which can enable to simple assembly of the data carrier card. CONSTITUTION: A recess (4) in which at least one chip (1) is provided can be closed by a cover (5) which is connected to the card base structure (2) via a flexible area (6) in such a manner that it can be pivoted before closure by a flexible area (6) in relation to the card base structure (2). The flexible region (6) and the cover (5) can either be constructed in one piece with the card base structure (2), or the flexible area (6) can also be part of a label (7). The simple assembly of the data carrier card is advantageous.
Patent KR-20000016546-A (KR)
Title: Metallocene catalyst system using inorganic oxide as inorganic carrier
Inventor: BIDELL WOLFGANG
IPC: C08F4/619
Filed: 1997-06-03
Abstract: PURPOSE: A catalyst system to polymerize C2-C12-alk-1-ene is provided to make a C2-C12-alk-1-ene polymer having a narrow molar mass distribution. CONSTITUTION: Catalyst systems for the polymerization of C2 to C12 alk-1-enes containing(A) an inorganic carrier, (B) at least one metallocene complex, (C) at least one metallocenium ion-forming compound and (D) possibly at least one metal compound of an alkaline or alkaline earth metal or a metal of the third main group of the periodic system, in which the inorganic carrier is an inorganic oxide having a pH of 1 to 6 and contains hollows and channels, of which the proportionate total macroscopic volume in the whole particle is in the range from 5 to 30 %.
Patent KR-20000050316-A (KR)
Inventor: CHOI GEUM HO
IPC: B60N2/00
Filed: 1999-01-05
Abstract: PURPOSE: A light seatframe for driver's seat for a passenger car is provided to lighten driver's seat, by using light materials and making a seatframe as a body, so that fuel consumption is improved. CONSTITUTION: A light seatframe for driver's seat for a passenger car contains the following characteristics: to form a seatframe as one body using compounds, which consist of polypropylene resin and grass fiber mat, where the seatframe weighs 0.7 - 0.8 kg and have many curved parts (2) and rib (3).
Patent KR-20000050505-A (KR)
Inventor: KIM BYUNG YUN
IPC: H01L21/28
Filed: 1999-01-11
Abstract: PURPOSE: A method for forming a contact hole of a semiconductor device is provided to increase the margin of a photomasking process without increasing the depth of the contact hole while simultaneously forming the contact holes in regions having different surface topology. CONSTITUTION: A semiconductor substrate(100) having uneven surface topology due to a certain element(102) such as an interconnection layer or a capacitor formed thereon is first provided. An insulating layer(104) of silicon oxide is then deposited over the element(102) and the substrate(100). Next, a sacrificial layer(106) having an etch selectivity to the insulating layer(104) is deposited on the insulating layer(104) and planarized. Then, the sacrificial layer(106) and the insulating layer(104) are selectively etched through a photomasking process to form contact holes(108a,108b) partly exposing the substrate(100) and the element(102). Since a top surface of the sacrificial layer(106) is planarized, the photomasking process is performed with ease and the margin thereof is increased. Next, the sacrificial layer(106) is removed, and therefore contact holes(108a',108b') having almost same aspect ratio are obtained.
Patent KR-19990067922-A (KR)
Title: ＨＦＣ-32,ＨＦＣ-125또는ＨＦＣ-134ａ를 사용하는 냉동기용 윤활유 조성물
IPC: C10M105/06
Filed: 1999-01-15
Abstract: 특정의 구조를 갖는 에스테르를 단독 또는 다종혼합해서 사용하는 HFC-32, HFC-125 및 HFC-134a 중의 적어도 1개를 함유하는 HFC계 냉매를 사용하는 냉동기용 윤활유 조성물에 관한 것으로서, HFC-32, HFC-125 및 HFC-134a 중의 적어도 1개를 냉매로서 사용해서 압축기내부의 부식이나 압축기내의 청정성이 우수하고 특히 압축기내부에 있어서 장기간에 걸쳐 그 청정성을 유지하여 높은 신뢰성이 얻어지는 냉동기유를 제공하기 위해서, HFC-32, HFC-125 및 HFC-134a로 이루어지는 군에서 선택되는 적어도 1개를 함유하는 HFC계 냉매를 사용하는 냉동기용 윤활유 조성물로서, 알콜측이 2가 이상인 다가올과 1가인 지방산으로 이루어지는 에스테르를 단독 또는 혼합해서 베이스유로 사용하고, 이것에 첨가제가 1> 정인산 에스테르류 0.01∼1.0용량%미만, 2> 알킬포스포로티오네이트 및 아릴포스포로티오네이트류 중의 적어도 1개를 0.01∼1.0용량%이하 및 3> 에폭시화합물류를 0.01∼1.0용량%이하 배합해서 이루어지는 구성으로 하였다. 
     이것에 의해, HFC-32, HFC-125 및 HFC-134a중의 적어도 1개를 냉매로서 사용해서 압축기내부의 부식이나 압축기내의 청정성이 우수하고 특히 압축기내부에 있어서 장기간에 걸쳐 그 청정성을 유지하여 높은 신뢰성이 얻어진다는 효과가 있다.
Patent KR-20000051401-A (KR)
Inventor: YOON GAB KU
IPC: H02H7/00
Filed: 1999-01-21
Abstract: PURPOSE: A device for protecting power facilities with electrostatic reduction sequence and primary guard element revitalization is provided to enable a circuit breaker to cut off according to the output signals of a primary guard element relay when a primary guard element relay does not make a branch circuit breaker to cut off. CONSTITUTION: A device for protecting power facilities with electrostatic reduction sequence and primary guard element revitalization includes the following components. A output signal of a primary guard element relay(60) is cut off when a branch guard element relay(80,81,...,8N) cuts off a branch circuit breaker(40, 41,..., 4N). An electrostatic reduction sequence and primary guard element revitalization makes a primary circuit breaker(20) to operate according to the output signals of a primary guard element relay(60) when a branch guard element relay(80, 81,..., 8N) does not cut off a branch circuit breaker(40, 41,..., 4N). A series of output signals from a branch guard element relay(80, 81,..., 8N) are submitted to a relay coil(RY) through each diode(D1, D2,...DN).
Patent KR-20000051402-A (KR)
Inventor: CHUN JAE HWAN
IPC: H05B37/02
Filed: 1999-01-22
Abstract: PURPOSE: An apparatus using an infrared ray reflected by a moving object is provided to turn on/off an illumination device automatically. CONSTITUTION: An automatic illuminating apparatus detects the moving object and turns on/off the switch according to the detected information. An apparatus comprises an illuminating device(6), and an automatic illuminating circuit. The automatic illuminating circuit includes a controller(1), an oscillator circuit(2), a circuit for adjusting a transmission distance(3), a surrounding light detector(4), a switching relay(5) turning on/off the power supply line, a light emitting diode(7) emitting an infrared ray, a corresponding ray detector(8) detecting the reflected ray and converting it to an electrical signal, and a power supply(9). The apparatus distinguishes daylight and night based on the surround luminous intensity detected by a light detector and the predetermined reference voltage, an infrared ray transmission distance could be adjusted. It also prevents the malfunctions of the sensors. In daylight, the controller controls the diode emission and the switching relay operation.
Patent KR-19990045864-A (KR)
Title: 그룹통화시스템
IPC: H04Q3/42
Filed: 1999-01-29
Abstract: 본 발명은 그룹 통화 시스템에 관한 것으로, 개인 대 개인, 또는 개인 대 복수의 개인 또는 복수의 개인들로 이루어진 그룹(Group)단위의 상대방과 음성통화를 수행할 수 있도록 한 그룹 통화 시스템으로서, 그룹단위의 전체 또는 선별된 소그룹 단위의 상대방과 정보통신이 가능하고 또한 상대방에게 통화의 권한을 결정하여 상대방 개인 또는 그룹 전체 또는 선별적인 소그룹과의 통화가능 여부를 통제할 수 있도록 한 그룹 통화 시스템에 관한 것이다. 
     본 발명은 주장치와 n개의 단말기, 그리고 n개의 단말기를 관리하는 관리자 단말기를 구비함으로써 전화 및 키폰 전화기를 통하지 않고, 여러명의 구성원들 중에서 통화를 원하는 상대나 집단에 통화를 하기 위하여 자신이 상대에게 통화권한을 부여 또는 배척할 수 있도록 한 그룹 통화 시스템으로서, 내부의 음성 합성장치를 이용해서 음성 이외에 음악이나 게임의 효과음 등을 각각 선정하여 전송할 수 있도록 함으로써, 네트웍 게임방(인터넷 게임방)에서의 다중통화나, 회사 건물내에서의 부서별 또는 원하는 그룹별로 선별적인 또는 동시통화가 가능하도록 한 그룹 통화 시스템을 제공함을 그 목적으로 한다.
Patent KR-19990037896-A (KR)
Title: 오디오기기의보안장치
IPC: G11B19/04
Filed: 1999-02-13
Abstract: 재생상태에 있는 기록매체에 기록된 데이타가 메모리에 기억된 식별데이타와 일치한 때에 조작불능상태에 있던 오디오 기기가 조작가능해지는, 기록매체에 기록된 신호를 재생하는 오디오 기기의 도난을 방지하는 보안장치에 있어서, 
     장치의 모드를 식별데이타가 메모리에 기억될 수 있는 식별 매체 설정모드로 전환시키는 제 1모드 전환수단 ; 및 
     상기 제 1모드 전환수단에 의하여 식별매체 설정모드로 전환된 상태이며 상기 메모리에 식별데이타가 기억되어있지 않은 상태에서, 상기 기록매체가 재생상태로될때 그 기록매체에 기록된 데이타를 상기 메모리에 상기 식별데이타로서 기억시키기 위한 식별데이타 기억수단을 포함하는 것을 특징으로 하는 오디오 기기의 보안장치.
Patent KR-19990072812-A (KR)
Title: 2단기동액추에이터와,서보액추에이터작동방법
IPC: F16H1/16
Filed: 1999-02-22
Abstract: 2단 기동 서보 액추에이터는 회전 출력을 제공하는 워엄 피동 고감속 기어 열을 구비한다.  전동기 샤프트는 워엄과, 이 워엄과 동축인 베벨형 피니언을 구비한다.  전동기 워엄은 제 1 단 기어와 연속적으로 맞물린다.  제 1 단 기어는 이 기어와 동축으로 배치되고 이와 함께 회전가능한 입력 섹터 기어를 구비한다.  입력 섹터 기어는 출력 기어와 간헐적으로 맞물린다.  출력 기어는 이 기어와 동축으로 그리고 이와 함께 회전가능하게 배치된 베벨형 출력 섹터 기어를 구비한다.  입력 섹터 기어의 출력 기어의 분리시에, 베벨형 피니언은 베벨형 출력 섹터 기어와 맞물려 출력 기어를 직접 구동시킨다.  일단 입력 섹터 기어가 출력 기어로부터 분리되면, 출력 기어상의 리턴 스프링은 베벨형 피니언을 통해 전동기를 구동시켜서, 전동기 작동 고장의 경우에 출력 기어를 소망하는 위치로 리턴시킨다.
Patent KR-20000060136-A (KR)
Inventor: YOON JIN YOUNG
IPC: A01G9/02
Filed: 1999-03-12
Abstract: PURPOSE: A method for preparing a flower pot of basket shape is provided, to reduce its manufacturing cost and to improve its appearance. CONSTITUTION: The method comprises the steps of: supplying plastic pot (10) sequentially; putting the plastic pot (10) in a rolling apparatus and rotating, thereby to allow the synthetic resin wire (20), which is supplied from a reel (A) continuously, to be wound on the outer surface of the plastic pot (10); and adhering a finishing rim (30) and a decoration rim (40) to the plastic pot (10).
Patent KR-20000060281-A (KR)
Title: Automatic milking apparatus
Inventor: KWON DU JUNG
IPC: A01J5/00
Filed: 1999-03-13
Abstract: PURPOSE: An automatic milking apparatus is provided. CONSTITUTION: The milking apparatus comprises a main controller part (10) which contains a control box (11) placed in the one side, vertical transfer axes (12) in the both sides, a rack gear (13) placed between them, and a pinion gear (14); a drive part (20) which contains drive pulleys (21, 22) which is combined with the lower part of a plate (15) and is interlocked by a link drive motor (M2), an arm drive motor (M3) and a timing belt (70); and an operation part (30) which consists of an arm (40), a link (50) and a milking part (60) whose drive pulleys (21, 22) and pulleys (P1, P2, P3) are connected sequently by a timing belt (70).
Patent KR-20000060782-A (KR)
Inventor: YOON JONG HYEON
IPC: A47J41/00
Filed: 1999-03-19
Abstract: PURPOSE: A pot is provided, to allow the cover of a pot to be opened and closed easily, and to prevent the inflow of dust and impurities to the pot. CONSTITUTION: The pot (100) comprises a body part (110) which forms a main exit part (114) and separates the central part into upper and lower parts or combines them; a cover part (120) which comprises a subcover (122) and a main cover (121); an upper and lower parts control part (130) which comprises an operation bar (133) whose upper part is adhered to the lower part of the subcover (122), the screw part (134) formed in the lower part of the operation bar (133), and a control tool (135) which is combined with the screw part (134) of the operation bar (133) and exposed to the exterior of the body part (110); a main exit wall (142) which separates the inside of the main exit (114) and the body part (110); and at least one main exit tool (143) placed in the main exit wall (142).
Patent KR-20000060806-A (KR)
Inventor: JHANG KYUNG YOUNG
IPC: G01N29/06
Filed: 1999-03-19
Abstract: PURPOSE: An ultrasonic inspection device for evaluating quality of fruits is provided to effectively injecting an ultrasonic wave to curved surfaces of fruits and uniformly maintain contact pressure between transducers and an inspecting element, thereby improving the reliability of quality evaluation. CONSTITUTION: An ultrasonic inspection device for evaluating quality of fruits includes a waveform analyzing computer(10) for performing various signal processing and evaluating quality of fruits by using software, a high output ultrasonic pulse transmitting and receiving device(11) for outputting an analogue ultrasonic signal by a transmitter in response to a measuring trigger signal of a receiver, and outputting an analogue ultrasonic response signal having an RF waveform by amplifying and filtering the response signal input from the receiver, a transmitting transducer(12) for providing the analogue ultrasonic signal while repeating expansion and retraction by reverse-piezo electric effect, a horn(13) for injecting the analogue ultrasonic signal to an object to measure, an inspecting element(14) permeating the analogue ultrasonic signal to fruits difficult for maintaining a uniform contact pressure manually, a receiving transducer(15) for providing an analogue ultrasonic response signal to the high output ultrasonic pulse transmitting and receiving device after performing piezo-electric function, a contact pressure controlling pneumatic element(16) maintain a uniform contact force between the transmitting and receiving transducers and the inspecting element, and an A/D converter(17) for outputting a digital ultrasonic response signal having information of the inspecting element.
Patent KR-20000065286-A (KR)
Inventor: LEE YONG IN
IPC: G03F7/26
Filed: 1999-04-01
Abstract: PURPOSE: A device for eliminating extraneous matters is provided which uses a brush for washing to separate extraneous matters from an iron plate and improve washing capability so that it prevents the iron plate from being damaged. CONSTITUTION: The device for eliminating extraneous matters in shadow mask manufacturing machine comprises the parts of: a defatted bath(41, 42) which uses alkaline detergent to eliminate rust preventing oil on the surface of the iron plate and extraneous matters; a first washing bath(43) which eliminates detergent and extraneous matters on the surface of the iron plate after defatting; a nitrate treatment bath(44) which uses nitric solution to etch the surface of the iron plate for raising adhesion power of photoresist; a second washing bath(45) which eliminates nitric acid and extraneous matters on the surface of the iron plate after treating by nitric acid; a neutralization tank(46) which neutralizes nitric acid on the surface of the iron plate using alkaline solution; and a third(47) and a fourth(48) washing tank which eliminate alkaline solution and extraneous matters after neutralization.
Patent KR-20000065308-A (KR)
Title: Serial program control circuit
Inventor: LEE SANG YUN
IPC: G06F9/22
Filed: 1999-04-01
Abstract: PURPOSE: A serial program control circuit is provided to reduce data pins necessary for data I/O by enabling a data I/O and an address input via one serial data. CONSTITUTION: A serial program control circuit comprises a serial program control signal generator(100), a serial port controller(200), a polarity & edge selector(300), a clock synchronization shift register(400), an output detector(500), a loadable binary counter(600), an address selector(700), and a programmable ROM(800). The serial program control signal generator(100) decodes clock signals and control signals, and activates enable signals of independent operation modes. The serial port controller(200) controls an I/O of a serial port by a serial data input & output enable signal. The polarity & edge selector(300) selects an edge, a latch and a polarity of the serial I/O dat if the serial I/O enable signals and a shift register operation enable signal are activated. The clock synchronization shift register(400) performs loading the data in parallel. The output detector(500) detects a shift-up edge of a clock signal, and transmits the detected signal to the serial port controller(200).
Patent KR-20000061982-A (KR)
Inventor: KIM JAE YEOL
IPC: F01N1/24
Filed: 1999-04-07
Abstract: PURPOSE: A crimp bulky yarn is provided to achieve a high effectiveness of sound absorption and prevent scattering of a glass fiber during treatment and use. CONSTITUTION: A crimp bulky yarn is manufactured by obtaining regularly arranged glass fiber rove and yarn by gathering continuously spun long strands of glass fiber, and applying an artificial force to thus-obtained glass fiber rove and yarn so as to allow the glass fiber rove and yarn to have crimp and bulk characteristics by being entangled with each other and bulged. Thus-obtained crimp bulky yarn is provided with a sufficient sound absorbing space.
Patent KR-20000066795-A (KR)
Title: Air bag system for vehicle
Inventor: YOON UNG NAM
IPC: B60R21/16
Filed: 1999-04-21
Abstract: PURPOSE: An air bag system for a vehicle is provided to protect passengers from secondary impact by inflating an air bag again after absorbing a primary impact. CONSTITUTION: In occurrence of a primary collision, an explosive of a first ignition agent(12) is ignited and a first gas forming agent(16) is burned to generate a large amount of gas in a moment. An air bag is inflated by the gas to protect the head and the breast of a passenger. After that, the air bag is deflated and the gas flows into a chamber through a line(50). Thereby, a first contact is coupled with a third one by sliding of a connector. In occurrence of a secondary collision, an ECU(electronic control unit) feeds electric signals to a second ignition agent(24) through the contacts. An explosive of the second ignition agent(24) is ignited to supply gas to the air bag. The air bag is inflated again to protect the passenger from the secondary impact.
Patent KR-20000066839-A (KR)
Inventor: KIM DONG HUN
IPC: B60J1/17
Filed: 1999-04-21
Abstract: PURPOSE: A vehicle window regulator control device and method are provided to active utilize a main up switch of driver's seat and a main down switch of driver's seat by a simple on/off operation of a total up/down on/off switch, thereby improving the productivity and the efficiency of the switches. CONSTITUTION: A vehicle window regulator control device and method comprises a total up/down, on/off switch(SWT). The total up/down on/off switch(SWT) makes a main driver seat up switch(SW7), a main driver seat down switch(SW8), a main passenger seat up switch(SW9), a main passenger seat down switch(SW10), a main left seat up switch(SW11), a main left seat down switch(SW12), a main right seat up switch(SW13) and a main right seat down switch(SW14) for controlling the windows mounted on the driver seat, a passenger seat and a rear seat, respectively, to be operated normally. Alternatively, the total up/down on/off switch(SWT) allows the main driver seat up switch(SW7) and the main driver seat down switch(SW8) to supply all windows up switching signal and all windows down switching signal to a microcomputer(70).
Patent KR-20000067612-A (KR)
Inventor: LEE SANG MAN
IPC: D06M15/03
Filed: 1999-04-30
Abstract: PURPOSE: A chitosan fiber, chitosan non-woven and their preparation method are provided, which have the high strength and elasticity and the shape stability against water or alkali. CONSTITUTION: A chitosan fiber is prepared by removing inorganic salts and proteins from the material containing chitin and deacetylaing it; dissolving the pretreated material in weakly acid solution to obtain a spinning source solution; spinning the spinning source solution to obtain fiber; solidifying the spun fiber; washing the solidified fiber with water and drawing it; and cross-linking the washed fiber by using a cross-linking agent selected from the group consisting of glutaldehyde, epichlorohydrin and mixture thereof. Preferably the cross-linking agent comprises 0.01-3.5 wt% of glutaldehyde, epichlorohydrin or mixture thereof; 10-30 wt% of sodium sulfate; and 0.1-3 wt% of sulfuric acid.
Patent KR-20000074826-A (KR)
Inventor: LEE TAE GYU
IPC: H04L29/10
Filed: 1999-05-26
Abstract: PURPOSE: A method for interfacing with intelligent type icons is provided to inform a user of a present service quality so as to make the user predict a servicing situation before connecting or performing a service and to iconize service-capable functions only, so that the user can select the service-capable functions to reduce an unnecessary communication connecting attempt. CONSTITUTION: A controller of a communication terminal displays service-capable functions only on a liquid crystal display(LCD) among many functions. The functions are divided into combinations of text message services, voice services, and image services. The functions are divided into completely-service capable functions, partially-service capable functions, and service-incapable functions on icons under a present communication environment.
Patent KR-20010001463-A (KR)
Inventor: SONG IN HO
IPC: G11C11/401
Filed: 1999-06-04
Abstract: PURPOSE: An output circuit having a pipeline structure for a semiconductor memory device is provided to reduce a power consumption and to reduce a circuit size by replacing an inverter used for a pipeline output circuit with a tri-state inverter not using a phase splitter. CONSTITUTION: An output circuit includes a pipeline portion(20), N numbers of tri-state inverters(22a-22n) and an output buffer. The pipeline portion consists of M(more than 1) numbers of pipeline stages(P1-Pm) and operates N numbers of partial pipelines consisting of K(less than or equal to M) numbers of pipeline stages among the M numbers of pipeline stages. The tri-state inverters connect with output terminals of the partial pipelines and invert outputs of the partial pipelines in response to an external state signal. The output buffer(26) buffers outputs of the tri-state inverters. The pipeline portion has N numbers of partial pipeline paths are not divided one another. The partial pipeline paths have different delay time one another. Each tri-state inverter inputs the state signal as an enable signal and inverts an input signal of the activated tri-state inverter when the enable signal is active.
Patent KR-20010001718-A (KR)
Inventor: KIM DAE YEONG
IPC: H04L12/28
Filed: 1999-06-08
Abstract: PURPOSE: The method for processing a network management message on a common line network is provided to efficiently manage the common line network, by determining an erroneous message on the common line network and the message for the connection to network of another company. CONSTITUTION: A signal link and a link set are monitored, and thereby it is identified if the message received by a signal transfer point(STP) and a gateway has been transmitted from the network of another company(S1). If the received message is applied from the network of another company, it is determined whether the received message is related to the management of the networks of a message transfer part and a signaling connection control part(S2). It is checked if the received message includes the information recorded in the network of one company(S3). If the received message is related to a network management message and to the network of one company, the received message is removed(S4). The information of the signal link and the link set related to the received message are reported to an operator's terminal(S6).