baber/WOPTO huggingface dataset:
Patent KR-20010022848-A (KR)
Title: 13-데옥시안트라시클린 유도체 및 그 제조방법
IPC: A61K31/7028
Filed: 1998-08-13
Abstract: 비심장독 안트라시클린 유도체인 13-데옥시안트라시클린 유도체 및 이러한 13-데옥시안트라시클린 유도체의 제조방법.
Patent KR-20010052061-A (KR)
Title: 위상 동기 루프의 루프 필터를 위한 전하 펌프 조종 시스템 및 방법
IPC: H03L7/107
Filed: 1998-08-26
Abstract: 충전펌프 조정 시스템 및 방법은, 위상 동기 루프의 루프 필터의 충전펌프로 하여금 오차신호와 관계없는 규정된 시간동안 커패시터를 충전 또는 방전하게 한다. 그 후, 충전펌프는 위상 검출기 오차 신호에 따라 동작한다. 따라서, 오차신호에 의존하여 충전펌프를 작동시키기보다는, 루프필터로의 또는 루프필터로부터의 필요한 전하 양을 추가 또는 제거하는 주기동안 충전펌프를 작동시킬 수 있다. 그럼으로, 동기 시간을 감소시킬 수 있는 한편, 충전펌프의 크기와 비용을 줄일 수 있다. 본 발명은 위상 동기 루프의 적분 충전펌프에 적용하는 것이 바람직하다.
Patent KR-20010023517-A (KR)
Title: 산소에 의한 경질탄화수소의 전기적으로 보조되는 부분 산화
IPC: C01B3/36
Filed: 1998-08-28
Abstract: 탄화수소의 수증기 개질 및/또는 CO 2 와의 개질을 수반하는 탄화수소의 글라이딩 전기 방전 플라즈마(4) 부분 산화를 보조하는 방법과 장치(1)의 목적은 검댕 또는 코크의 형성없이 고함량의 C 2 H 4 및 C 2 H 2 를 또한 가질 수 있는 CO 및 H 2 가 풍부한 가스를 제조하는 것이다. 
     이 생성물의 혼합물은 1200℃ 이하의 온도 및 6바 이하의 압력에 있는 구역(15a)에서 타오르는 글라이딩 전기 방전을 가진 플라즈마 반응기(1)에서 제조되었다. 방전은 초기의 기체 산소와 혼합된, 그리고 아마도 H 2 O 및/또는 CO 2 와 혼합된 탄화수소로 이루어진 발열 반응성 매개체에서 직접 일어난다. 생성물의 흐름은 플라즈마에 의해 활성화되며 그 영역(15a)을 떠나서 온도가 1100℃를 넘지 않는 구역(15b)에 놓여 있는 금속 또는 세라믹 물질(19)과 접촉하게 된다. 이 물질은 생성물 흐름의 존재에서 활성화되며, 상기와 같이, 그것은 플라즈마 구역(15a)을 떠나는 생성물의 최종 생성물로의 전환을 증대시키는데 기여한다.
Patent KR-20010030665-A (KR)
Title: 유장 단백질의 순차적 분리법 및 그의 제제
IPC: A23C9/14
Filed: 1997-09-22
Abstract: 방사상 유동 크로마토그래피를 사용한 유장 단백질의 순차적 분리 방법이 개시되어 있다.  적절한 pH 및 이온 농도로 조절된 상이한 완충액 시스템이 분리 방법에 사용된다.  방법은 유장으로부터 5종 이상의 상이한 단백질을 분리한다.  유장으로부터 분리된 상이한 각종 단백질을 상이한 비율로 혼입한 유아식 및 다른 식품 제제도 또한 개시되어 있다.
Patent KR-20010031907-A (KR)
Title: 포지형 감방사선성 조성물
IPC: G03F7/039
Filed: 1999-09-07
Abstract: 본원 발명은, 산의 작용에 의해 알칼리 수용액에 대한 용해성이 증대하는 중합체, 및 방사선의 조사에 의해 산을 발생하는 화합물을 함유하는 포지형 감방사선성 조성물로서, 이 중합체의 방사선에 의한 주쇄 절단의 발생이 폴리메틸메타크릴레이트보다 일어나기 쉬운 것을 특징으로 하는 포지형 감방사선성 조성물,  또는 알칼리 가용성 중합체, 이 알칼리 가용성 중합체의 알칼리 가용성을 억제하는 효과를 가지며, 이 억제 효과가 산의 작용에 의해 저하 또는 소실되는 화합물, 및 방사선의 조사에 의해 산을 발생하는 화합물을 함유하는 포지형 감방사선성 조성물로서, 이 알칼리 가용성 중합체의 방사선에 의한 주쇄 절단의 발생이 폴리메틸메타크릴레이트보다 일어나기 쉬운 것을 특징으로 하는 포지형 감방사선성 조성물에 관한 것이다. 
     본원 발명에 의해, 서브쿼터미크론의 패턴 가공이 가능한 해상도를 가지며, 고감도의 포지형 감방사선성 조성물을 얻을 수 있다.
Patent KR-20010032375-A (KR)
IPC: B01D39/20
Filed: 1998-11-20
Abstract: A filter element in which several layers ( 2, 3, 5, 7, 8 ) made of a filtering medium are joined contiguously in the direction of flow with at least one layer ( 2, 7 ) made of a filtering medium with a high storage capacity and a low degree of separation being arranged on the in-flow side and at least one layer ( 3, 8 ) made of a filtering medium with a low storage capacity and a high degree of separation being arranged on the out-flow side. Preferably the in-flow filtering medium is made of a filter paper containing cellulose or of a melt-blown material, and the out-flow side filtering medium is produced from a filter paper containing cellulose.
Patent KR-20010033353-A (KR)
Title: 고정층 반응기의 연속적 연결 캐스케이드를 이용하는에폭시화물의 제조방법
IPC: C07D301/19
Filed: 1998-09-23
Abstract: 본 발명의 올레핀 에폭시화 반응은 티타니아-온-실리카와 같은 불균일 촉매의 고정층을 포함하는 다수의 반응 용기를 이용하여 실시한다.   상기 반응 용기는 연속적으로 연결되어 있어, 올페린 및 활성 산소 화합물종을 포함하는 피드스트림이 반응 용기의 연속을 통과하고, 불균일 촉매와 접촉하여 올레핀의 해당 에폭시화물로의 전환이 달성된다.   개별 반응기내 촉매의 활성이 원하지 않는 저수준으로 저하되는 경우에는, 상기 반응 용기는 서비스로부터 제거되고 새로운 또는 재생된 촉매를 포함하는 대체 반응기가 투입된다.   상기 대체 반응 용기는 선택적으로, 상기 연속의 첫 번째 또는 최종 반응기로 투입될 수 있다.   예컨대, 피드스트림은 반응기의 연속내에서 최대 또는 최소 활성의 촉매와 먼저 접촉하게 된다.   후자의 구현예에서 다소 촉매의 수명이 길지만, 전자의 구현예는 보다 작은 열 교환기 능력을 요구한다.   본 발명의 방법은 모든 촉매가 동시에 대체 또는 재생되는 종래의 고정층 에폭시화 반응 방법과 비교하여 촉매 사용을 상당히 감소시킨다.
Patent KR-20010033693-A (KR)
Title: 경질 캅셀의 제조방법
IPC: A61K47/38
Filed: 1999-10-25
Abstract: 수용성 셀룰로오스 유도체를 열수에 분산하고, 이것을 냉각하여 수용성 셀룰로오스 유도체를 물에 용해시킨 후, 이 수용성 셀룰로오스 유도체 수용액에 겔화제를 첨가, 용해시켜, 얻어진 캅셀 조제액에 캅셀 형성용 핀을 소정온도에서 침지하고 뒤이어 그 핀을 끌어올려서, 그 핀에 부착된 캅셀 조제액을 겔화시키는 것을 특징으로 하는 경질 캅셀의 제조방법.
Patent KR-20010024870-A (KR)
Title: 코드리스 스캔헤드 전송 시스템을 갖는 초음파 진단 영상시스템
IPC: G01N29/44
Filed: 1999-11-18
Abstract: 초음파 진단 영상 시스템에는 초음파 화상 신호를 영상 시스템에 무선으로 송신하는 무선 스캔헤드들이 설치되어 있다.  송신된 화상 신호들은 초음파 시스템에 의해 정밀하게 처리되고 표시하기 위한 화상 신호들의 표시 특성들을 식별하고 헤더 및 트레일러 정보가 동반되고 또한 완전한 스캔라인 또는 화상 프레임을 위한 데이터 등의 정보의 이산 유닛을 기술한다.  송신된 초음파 정보를 위한 통신 및 부호화 프로토콜들을 정의하는 통신 프로토콜 헤더들과 트레일러가 기술된다.
Patent KR-20010040647-A (KR)
IPC: C12Q1/48
Filed: 1999-01-29
Abstract: A process for preparing baccatin and/or baccatin derivatives is described in which 10-deacetylbaccatin or a 10-deacetylbaccatin derivative is reacted in the presence of an isolated enzyme and an acetyl donor, the enzyme used being an acetyl transferase having a molecular weight of from 70 to 72 kD, determined by SDS-PAGE, which acetyl transferase is obtainable from Taxus chinensis cell cultures.
Patent KR-20010043368-A (KR)
IPC: A23L27/20
Filed: 1999-04-28
Abstract: A novel process for producing dry instant soups and sauces wherein a specific sulfur-containing compound such as glutathione is added to a feedstock composition in any step during the production of dry instant soups or sauces containing vegetables, mushrooms, spices, etc. This process makes it possible to give dry instant soups and sauces wherein the inherent smells of the vegetables, mushrooms, spices, etc. can be enhanced and sustained stably over a long time.
Patent KR-20010025612-A (KR)
Title: Method for preparing a peptide and low molecular weight peptides
Inventor: CHO SUK HYEONG
IPC: C07K1/36
Filed: 2001-01-11
Abstract: PURPOSE: A method for producing low molecular weight peptides is provided for effectively producing the peptides with low cost. CONSTITUTION: The low molecular weight peptides are produced by dissolving plant or animal proteins in distilled water, organic solvent, or organic solvent/distilled water solvent, and adding catalyst into the mixed solvent and heating them, or adding or not adding catalyst into the mixed solvent and irradiating ultrasonic wave or light, in which the ultrasonic wave has 15 to 100 kHz and 100 to 4800W of power; the light is gamma ray, electric ray, and ultraviolet ray; the catalyst is 4,4'-azobis-4- cyanopentanoic acid, 2,2'-azobis-isobutylamidine and salts thereof, 2,2'-azobis-2-(methylcarboxy) propane, ammonium persulfate, kalium persulfate, hydrogen peroxide-Fe2+, kalium persulfate or ammonium persulfate-sodium hydrogen sulfite or sodium hydrogen sulfite, cumenehydroperoxide-amine, peroxyacetic acid, acetyl peroxide, azo-nitrile, alkyl peroxide, arylperoxide, hydroperoxide, ketone peroxide, perester, carbonate peroxide, chloride, sodium chloride, chlorous acid, inorganic acid, hydrogen peroxide, ozone, or ascorbic acid; and the organic solvent is alcohol, ketone, DMF, DMAc, THF, dioxane, benzene, toluene, acetonitrile, xylene, hexane, and ethyleneglycol.
Patent KR-20010076350-A (KR)
Title: A microlithography projection apparatus
Inventor: MULKENS JOHANNES
IPC: G02B19/00
Filed: 2001-01-18
Abstract: PURPOSE: A lithographic projection apparatus is provided to avoids or alleviates the problems of simultaneously compensating for this error whilst minimizing the size of the illumination system lenses in an off-axis projection system. CONSTITUTION: The lithographic projection apparatus for compensating for asymmetrical telecentricity deviation comprises an illuminator(40), comprising beam shaping optics(42), and an integrator, field lens system, reticle masking means(46), and associated reticle masking lens system(48). The illuminator(40) provides a beam of radiation for illuminating a reticle(50), an image of which is then projected onto wafer(42) by projection system(54). The illumination incident on the reticle(50) is in the form of a slit, represented by the rectangle(53). The reticle(50) and wafer(42) are in this case scanned such that the slit and its image are swept across the reticle(40) and wafer(42) respectively. The illuminator(40) comprises a mirror(46). The mirror(46) is tiltable such that its angle can be selected to deviate the illumination beam in order to compensate for the non-circularly-symmetric telecentricity error of the projection system(54).
Patent KR-20010076355-A (KR)
Title: Optical element and optical pick-up
Inventor: ANDO NOBUHIKO
IPC: G11B7/125
Filed: 2001-01-18
Abstract: PURPOSE: To provide an optical pickup which can suppress the inclination of luminous fluxes supplied to a photodetector to a lower level when an optical element inclines. CONSTITUTION: The optical element 160 in the optical pickup 52 makes the incident luminous fluxes incident from a first surface 161a of a first prism 161, reflects the luminous fluxes refracted by the first surface 161a with a second surface 161b, refracts the luminous fluxes reflected by the second surface 161b at the joint surface of the first prism 161 and the second prism 162 and refracts the luminous fluxes refracted by the joint surface at the first surface 162a of the second prism 162, therebys forming the exit luminous fluxes. The direction of the incident luminous fluxes and the direction of the exit luminous fluxes intersect orthogonally with each other within the same plane. The luminous fluxes from the direction of the exit luminous fluxes are made incident from the first surface 162a of the second prism 162 and the luminous fluxes refracted by the first surface 162a are reflected by a film 164. The luminous fluxes reflected by the film 164 are refracted by a third surface 162c, are emitted toward a direction reverse from the direction of the incident luminous fluxes and are supplied to the photodetector 8.
Patent KR-20010078143-A (KR)
Title: Electro-optical connector module
Inventor: HEYVAERT WINNIE
IPC: H04B10/2581
Filed: 2001-01-30
Abstract: PURPOSE: A photoelectric connector module is provided, which can reduce interference and cross by separating a transmission component from a reception component. CONSTITUTION: A photoelectric connector module(1) comprises a connection part(3), more than one optical transmitter circuit, an optical receiver circuit and more than one photoelectric converter which converts an electrical signal into an optical signal or an optical signal into an electrical signal. The photoelectric connector module further includes more than two insulation sheets where the transmitter circuit, the receiver circuit and the converter are installed and are flat and parallel each other. The optical transmitter circuit and the first converter are installed on the first sheet, and the optical receiver circuit and the second converter are installed on the second sheet. The sheets are connected by a flexible sheet material.
Patent KR-20020065254-A (KR)
Title: An inspecting camera which can change the auto-focus zone and the auto-focus zone changing method using the inspecting camera
Inventor: HONG SUN HAK
IPC: G03B3/00
Filed: 2001-02-06
Abstract: PURPOSE: A surveillance camera and method for changing automatic focusing region is provided to allow a user to freely change automatic focusing region, by displaying, onto a screen, the automatic focusing region for surveillance camera. CONSTITUTION: A surveillance camera comprises a lens(100) for adjusting an input image and outputting a predetermined image; a charge coupled device(200) for receiving the image output from the lens, converting the image into an electrical signal and outputting the result; a digital camera processor(300) for adjusting the image signal output from the charge coupled device by one or more blocks; a micro controller(400) for controlling each register of the digital camera processor to create stable image; a menu selecting unit(500) for permitting key input to change the automatic focusing region displayed through a screen; and a memory(600) for storing the modified data for automatic focusing region.
Patent KR-20020066536-A (KR)
Title: Wiper blade assembly having single elastic supporting member
Inventor: SUK NAM YEONG
IPC: B60S1/38
Filed: 2001-02-12
Abstract: PURPOSE: A wiper blade assembly having a single elastic support member is provided to reduce frictional resistance, and to improve endurance by covering a single rail spring with double rubber structure. CONSTITUTION: Blade rubber(100) is composed of first rubber(110) having high stiffness, and second soft rubber(120). A single elastic member is formed in a wiper blade assembly with assembling the blade rubber with curved rods of the wiper. A single rail spring(50) is placed in the first rubber, and a first base part(112) is formed. The first base part has a space(113) to cover a second base part(124) of the second rubber. The second rubber and the first rubber are manufactured individually, and the second rubber is covered with the first rubber by inserting a fixing sill(111) of the first rubber to a fixing groove(122) of the second rubber. The wiper blade is contacted to the windshield of the vehicle with arranging the rail spring in the blade rubber. Noise is reduced in operating the wiper, and endurance is improved with reducing frictional resistance.
Patent KR-20010082693-A (KR)
Inventor: SHIGIHARA MAGOTO
IPC: H01Q13/08
Filed: 2001-02-16
Abstract: PURPOSE: To provide a circular polarized wave microstrip antenna, capable of providing a desired resonance frequency or axial ratio after attaining miniaturization, while using the dielectric substrate of a great dielectric constant. CONSTITUTION: Concerning a circular polarized wave microstrip antenna 1, with which an almost rectangular patch electrode 2 is formed on one side of an almost rectangular dielectric substrate 4 and a ground electrode 3 is formed almost over all the other side, when a direction for watching a feeding point 5 from the center of the patch electrode 2 is 0deg., triangular first notches 2a and 2b of degenerate separating elements are formed in the directions of 135deg. and 315deg., and a first electrode 2c for control extended from the edge of the patch electrode 2 to the outside is formed inside the first notch 2b. When the direction watching the feeding point 5 from the center of the patch electrode 2 is 0deg., however, a triangular second notch 2d is formed in the direction of 45deg. and a second electrode 2e for control extended from the edge of the patch electrode 2 to the outside is formed inside this second notch 2d.
Patent KR-20020067396-A (KR)
Title: Measuring equipment of consuming volume of domestic water by three kinds of time band
Inventor: KIM BYEONG GI
IPC: G01F15/07
Filed: 2001-02-16
Abstract: PURPOSE: A tap water metering apparatus is provided to distribute the request for water by discounting the water charge for night time, while reducing water consumption and allowing water flow data to be easily obtained. CONSTITUTION: Voltage or current signals(10,12) which are output from an electronic flow meter or ultrasonic flow meter, pulses(30,33) and a communication data are converted into predetermined sized by signal matching units(11,13) and input to a micro processor(1). The input value is multiplies by flow converting coefficients so as to be converted into an actual flow amount. The converted flow amount is distributed to a separate integrator by a distributor in accordance with the set time. Thus, the amount of water consumption is metered separately through a day time integrator, a night time integrator and a midnight integrator, respectively.
Patent KR-20010091950-A (KR)
Title: Method and apparatus for testing ic device
Inventor: OKITSU AKIRA
IPC: B65G57/04
Filed: 2001-03-09
Abstract: PURPOSE: To test an IC device quickly, efficiently and smoothly even when a large difference exists in the time for tests executed regarding individual IC devices. CONSTITUTION: The IC device D is placed on each socket 11 of a test board 4, and its electric characteristic is tested. The test of the IC device D by an IC tester T is performed respectively independently with reference to each socket 11. Whenever the test of the IC device D placed on each socket 11 is finished, a signal to drive a device transfer means 30 is output to a controller C from the IC tester T. The IC device D whose test is finished is taken out from the socket 11 by the device transfer means 30, and an IC device D to be tested newly is placed. That the IC device D to be tested newly is placed on the socket 11 is detected by an optical sensor 19 which is installed at each socket 11, and the IC device D placed on the socket 11 is tested.
Patent KR-20020072674-A (KR)
Title: Method to reduce notching during reactive ion etching
Inventor: CHOI JUN HYEOK
IPC: H01L21/3213
Filed: 2001-03-12
Abstract: PURPOSE: A method for reducing a notching, namely, an unnecessary lateral etching at a lower part of a silicon layer, is provided when reactive ion etching is performed to penetrate the silicon layer in a structure made up of the silicon layer, and insulating layer and a silicon substrate. CONSTITUTION: The insulating layer(200) is formed on the silicon substrate(100) and patterned to have trenches(210) therein. The silicon layer(300) is then deposited on the patterned insulating layer(200) while filling the trenches(210). Next, the silicon layer(300) is selectively etched by reactive ion etching to form etched portions(310) to which the trenches(210) correspond. Due to a higher etch rate of a wide opening(306) compared with a narrow opening(304), the silicon layer(300) in the trenches(210) as well as the wide opening(306) is removed while the silicon layer(300) in the narrow opening(304). Therefore, a conventional notching caused by overetching in the wide opening(306) is reduced.
Patent KR-20010044665-A (KR)
Inventor: JANG KYUNG SIK
IPC: G07D5/08
Filed: 2001-03-14
Abstract: PURPOSE: Provided is a control device for selecting coins in a game machine by sensing the frequency of an injected object and comparing the frequency to the frequencies of various fixed coins. CONSTITUTION: The control device for selecting coins comprises: a power supply part(100) having a voltage regulator therein; a signal detecting part(200) having an oscillation coil which generates a particular waveform when the coin is injected; a temperature compensation part(300) having a thermistor to compensate the change of the waveform caused by the change of temperature; a signal treating part(400) to rectify and smooth the signal waveform received from the signal detecting part(200); a comparing part(500) to judge if the coin is the proper coin by comparing the treated signal to the criterional waveform; a switching part(600) which generates a switching signal when the judged signal is received from the comparing part(500).
Patent KR-20020073691-A (KR)
Title: Voice mail services method for base station
Inventor: HA SU GYEONG
IPC: H04B7/26
Filed: 2001-03-15
Abstract: PURPOSE: A method for servicing a voice mail box in a base station is provided to transmit only voice message in case that a termination-side subscriber does not wish for a direct telephone conversation by providing a service capable of selecting a direct telephone conversation or a voice message transmission. CONSTITUTION: If an origination-side subscriber inputs a cellular phone number of a termination-side subscriber using operation buttons, a control unit of a base station controls a guidance message recording/reproducing unit for reproducing a guidance message previously recorded in a data storing unit and transmitting the guidance message to a cellular phone. The origination-side subscriber confirms the guidance message and selects whether performing a direct telephone conversation with the termination-side subscriber or transmitting only voice mail box. If a voice mail box service is selected, the control unit controls a recording message recording/reproducing unit for storing the voice of the origination-side subscriber in the data storing unit, and controls the guidance message recording/reproducing unit for transmitting a guidance message to select a reservation transmission. If the reservation transmission is selected, the control unit controls the guidance message recording/reproducing unit for transmitting a guidance message to set a transmission time to the cellular phone, and controls a reservation data recording/reproducing unit for storing a reservation time set by the origination-side subscriber in the data storing unit. The control unit checks the reservation time stored in the data storing unit, and if the reservation time is reached, the control unit transmits the voice message to the termination-side subscriber.
Patent KR-20020074757-A (KR)
Title: Collection apparatus and method of metal impurities on the semiconductor wafer
Inventor: CHO HYEON GI
IPC: G01N1/34
Filed: 2001-03-21
Abstract: PURPOSE: An apparatus and a method for collecting pollutants of a semiconductor wafer are provided to collect a pollution source from a surface of a wafer by scanning automatically a surface of a semiconductor wafer. CONSTITUTION: A process chamber(100) has a shape of rectangular parallelepiped. A transfer unit(700) is used for transferring a wafer(50) of a loader portion(200) to a vapor phase deposition unit(300), a scanning unit(400), a dry unit(500), and an unloader portion(600). The loader portion(200) and the unloader portion(600) are installed at one side and the other side of the process chamber(100), respectively. The loader portion(200) and the unloader portion(600) have wafer cassettes for loading wafers(50). The vapor phase deposition unit(300) is formed with a loading plate(350), an airtight container(310), and a hydrofluoric acid tank. The scanning unit(400) is installed between the vapor phase deposition unit(300) and the unloader portion(600).
Patent KR-20010095013-A (KR)
Inventor: FURUKAWA HISAO
IPC: G06F17/00
Filed: 2001-03-26
Abstract: PURPOSE: A terminal-to-terminal communication connection control method using an IP(Internet Protocol) transfer network is provided to set an address administration table to a network node apparatus of the IP transfer network, and to register addresses of terminals into the address administration table is employed, so as to realize an IP packet communication by a multicast manner with improving information security performance. CONSTITUTION: A call setting IP packet is transmitted from a media router(1-3) to a connection server(1-5). The connection server(1-5) produces an IAM(Initial Address Message) containing a line number. The IAM is transmitted to a connection server(1-6) via a relay connection server(1-7). The connection server(1-6) transmits a call setting IP packet to a media router(1-4), and the media router(1-4) transmits the call setting IP packet to a terminal(1-2). The connection server(1-6) produces an ACM(Address Completion Message) and transmits the ACM to the connection server(1-5). When a report of telephone calling operation is received from the terminal(1-2), the connection server(1-6) produces a CPG(Call Pass Message). The CPG reaches to the connection server(1-5). The connection server(1-5) transmits the report of telephone calling operation of the terminal(1-2) to the media router(1-3). Upon receipt of a response issued from the terminal(1-2), the connection server(1-6) produces an ANM(Answering Message). The ANM reaches to the connection server(1-5). The connection server(1-5) stops the calling sound of the terminal(1-2). Both of the terminals(1-1,1-2) establish an inter-terminal communication to transmit/receive the digital media. A request for interrupting the inter-terminal communication is transmitted from a media router(1-3). A release request is sent from the connection servers(1-5) to both the relay connection server(1-7) and the connection server(1-6). An interrupt instruction is transmitted from the connection server(1-6) to the media router(1-4), and on the other hand, a release completion is transmitted to the server(1-6). And an interrupt completion is sent to the media router(1-4) so as to connect/release the inter-terminal communication between the two terminals(1-1,1-2).