baber/WOPTO huggingface dataset:
Patent KR-20040036213-A (KR)
Title: Paper tray for printer
Inventor: KWON DO HYEONG
IPC: B41J11/00
Filed: 2002-10-24
Abstract: PURPOSE: A paper tray of a print apparatus is provided to prevent paper jam and dual feeding of papers and to conveniently use the print apparatus by allowing an extension tray and a rotation extension tray to perform a series of operations by one action. CONSTITUTION: A paper tray of a print apparatus includes a main tray, a sliding extension tray(20), a rotation extension tray(30), and an automatically rotating and extending device. The main tray(10) is installed in a front side of a cover rotatably installed in one side of a body with a hinge. A pair of paper width guide members(11) is installed on an upper part of the cover. The paper width guide members(11) support both side parts of stacked papers. One of the guide members(11) is movable in a right or a left direction, so that widths of the guide members(11) vary depending on a width of paper to be used. The rotation extension tray(30) includes a pair of first hinge holes installed on one side or both sides of the rotation extension tray. A first protrusion is inserted into the first hinge holes.
Patent KR-20040036450-A (KR)
Title: An Apparatus related to Doors for Drawing Slabs from a Reheating Furnace
Inventor: KIM YEONG BOK
IPC: F27B9/30
Filed: 2002-10-26
Abstract: PURPOSE: An extracting door device of reheating furnace is provided to minimize catch of slab on extracting doors during extraction of the slab and easily restore the extracting doors to its regular position even in case of secession of the extracting doors. CONSTITUTION: The extracting door device of reheating furnace comprises first extracting door (A) on one side surface of which first depression part(1) is formed; second extracting door (B) on the other side surface of which second depression part(2) is formed so that the second depression part is oppositely directed to the first depression part of the first extracting door; a correcting pin(3) on one side surface of which a projecting part that is male and female connected to the first depression part is formed, and which is positioned inside the second depression part so that the correcting pin is moved side to side; and a correcting pin moving means(4) connected to the correcting pin and moved side to side, wherein the correcting pin moving means comprises a bar one end of which is connected to the correcting pin, a protection plate connected to the other end of the bar, and a cylinder connected to the protection plate and mounted on the protection plate so that the cylinder is moved relatively to the protection plate, and wherein the device further comprises an air cooling opening(9) formed on the front side of the second extracting door.
Patent KR-20040040673-A (KR)
Title: Tee of golf ball tee up machine
Inventor: CHO WAN JE
IPC: A63B69/36
Filed: 2002-11-07
Abstract: PURPOSE: A tee of a golf ball tee-up device is provided to firmly fix the tee since the rigidity of the tee is strengthened by a fixed washer. CONSTITUTION: The tee(95) of the golf ball tee-up device comprises: a fixed disc portion(95') fixedly installed thereto; a ball bearing portion(95'') formed in the upper side of the fixed disc portion(95') and having a smaller diameter than the fixed disc portion(95'); and a fixed washer(97) inserted into the fixed disc portion(97). The fixed washer(97) is made of metal of ring shape and includes multiple through holes(97'). A connecting portion(95'a) formed integral with the fixed disc portion(95') is formed by penetrating the through holes(97').
Patent KR-20030038528-A (KR)
Inventor: MAEOKA TAKUYA
IPC: B01D39/14
Filed: 2002-11-08
Abstract: PURPOSE: Provided is an antibacterial air filter medium, which retains its filtering performance even under high humid environment as well as can be inhibited from the propagation of bacterial or fungi. CONSTITUTION: The antibacterial air filter medium comprises at least one layer of a porous polytetrafluoroethylene film(1) and at least one layer of an antibacterial reinforcing material(2). The medium does not undergo a decrease in filtering property such as particle collection efficiency and can be inhibited from the propagation of bacterial or mold fungi thereon even when used after washing with water or under high humid environment. The reinforcing material is colored in order to make dirt inconspicuous.
Patent KR-20030039305-A (KR)
Title: Scrubber
Inventor: OKUDA KAZUTAKA
IPC: F23G7/06
Filed: 2002-11-08
Abstract: PURPOSE: To provide a fan scrubber which can improve an extraction ratio of fine dust in an exhaust gas. CONSTITUTION: This fan scrubber is provided with a casing 21 having an exhaust gas suction port and an exhaust gas discharge port, an impeller 23 which is arranged in the casing 21 and rotates, and a nozzle 25 which spouts a cleaning liquid 24 in the impeller 23. The fan scrubber sucks the exhaust gas containing the dust from the exhaust gas suction port into the central part of the impeller 23, spouts the cleaning liquid 24 from the nozzle 25, makes the particles of the cleaning liquid 24 capture the dust contained in the exhaust gas, and removes the dust in the exhaust gas. Collision plates 31 against which the exhaust gas coming out of the impeller 23 and the particles of the cleaning liquid 24 collide are continuously arranged at almost all the circumference of the impeller 23 in the casing 21.
Patent KR-20030052977-A (KR)
Title: Method for forming fine resist pattern
Inventor: NITTA KAZUYUKI
IPC: G03F7/039
Filed: 2002-12-02
Abstract: PURPOSE: To form a resist pattern with a small variation of resist pattern size per unit temperature suitable for a thermal flow process, high intrasurface uniformity in the resulting resist hole pattern size and excellent section shape. CONSTITUTION: In a resist pattern forming method in which a resist pattern formed by applying selective exposing and developing consecutively to a positive resist film disposed on a substrate, is subjected to the thermal flow treatment to reduce the pattern size, (a) the positive resist comprises a positive resist composition comprising (A) a resin component having alkali solubility increased by an acid, (B) a compound which generates an acid upon irradiation with a radiation, (C) a compound having at least two vinyl ether groups which react with the resin component (A) upon heating to form cross-linkage and (D) an organic amine and (b) the thermal flow treatment is carried out by heating the resist pattern two or more times within the temperature range of 100-200° and the latter heating temperature is made equal to or higher than the former heating temperature.
Patent KR-20040055432-A (KR)
Title: Method for deformable object animation
Inventor: JUNG IL GWON
IPC: G06T13/20
Filed: 2002-12-21
Abstract: PURPOSE: An amorphous object animation method is provided to perform the modeling as a material point-three dimensional spring model, calculate force and torque applied to the material point, integrate the calculated value and obtain a new position and a new posture of the material point, thereby capable of modeling and animating the amorphous object intuitionally by a user. CONSTITUTION: An amorphous object models as a material point-three dimensional spring model and various spring constants are initialized(S10). For calculating expanding force and restoring force, force and torque acting to the material point are initialized(S20). Force and torque acting to the material point are cumulatively calculated(S30). Force and torque are integrated and new position and posture of the material point are calculated(S40). After calculating new position and posture of the material point, the existing values are replaced with the obtained values and updated(S50).
Patent KR-20040056491-A (KR)
Title: Method and System for Providing Call Back Number Service in WCDMA Communication System
Inventor: KIM HYEON UK
IPC: H04W84/02
Filed: 2002-12-23
Abstract: PURPOSE: A method and system for providing a callback number to a short message service in a WCDMA(Wideband Code Division Multiplex Access) system is provided to define a TP-PID(Transfer Protocol-Protocol Identifier) value and a user data header value in addition to short message standards and to provide a coding/decoding function for user data so that various callback number services can be provided in a WCDMA system. CONSTITUTION: In a short message service system in a WCDMA network, a mobile terminal(110) executes packet data communication through an asynchronous WCDMA network, a PSN(Packet Switched Network). Also the mobile terminal(110) executes voice calls through an IS(Interim Standard)-95B network, a CSN(Circuit Switched Network). The mobile terminal(110) stores a program for creating a short message containing a callback number or for decoding a short message containing a received callback number. A UTRAN(UMTS Terrestrial Radio Access Network)(120) comprises an RTS(Radio Transceiver Subsystem)(122) and an RNC(Radio Network Controller)(124). The RTS(122) executes a wireless access termination function with the mobile terminal(110), transmits and receives voice, image, and data traffics in a WCDMA method, and transmits and receives information with the mobile terminal(110) through transmission/receiving antennas. The RNC(124) executes various functions, such as wired/wireless channel management, protocol interfacing, soft handoff processing, core network protocol processing, GPRS(General Packet Radio Service) access, fault management, system loading, etc.
Patent KR-20040059606-A (KR)
Title: Service Method according to Changing of Access Point Name
Inventor: SHIN HO SEOP
IPC: H04L45/80
Filed: 2002-12-27
Abstract: PURPOSE: A service method dependent on an APN(Access Point Name) change is provided to prevent a service interruption generated due to an APN error by making changed APN information updated in real time for a DNS(Domain Name Service) server and an MS(Mobile Station) in case that an APN is changed. CONSTITUTION: If a GGSN(Gateway GPRS Support Node)(23) creates, modifies or deletes an APN(S301), the GGSN(23) transmits this changed APN information to a DNS server(22) through an APN update request message(S302). The DNS server(22) incorporates the changed APN information, contained in the APN update request message, into a database(S303) and transmits the APN update request message to an MS(20)(S304). If the APN update request message is received, the MS, having APN information by services, incorporates the changed APN information of the APN update request message into the stored APN information(S305). The DNS server(22) and the MS(20), after completing APN updating, respectively transmit APN update response messages to the GGSN(23)(S306,S307).
Patent KR-20040059324-A (KR)
Title: Epoxy Resin Composition for Encapsulating Semiconductor Device
Inventor: HONG YONG U
IPC: C08G59/14
Filed: 2002-12-28
Abstract: PURPOSE: An epoxy resin composition for semiconductor device package is provided, to prevent the generation of crack between a pad face and a chip due to Pb free state in high temperature soldering and to reduce the adhesion of an epoxy packaging material and a wafer chip. CONSTITUTION: The epoxy resin composition comprises an o-cresol novolac epoxy resin of the formula 1; a diglycidyl ether bisphenol modified epoxy resin of the formula 2; a phenol novolac resin; a coupling agent obtained by pretreating the coupling agent represented by SiX3-(CH2)3-O-CH2R (wherein R is a cycloepoxy, amino, methacryl, mercapto or vinyl group, X's are identical or different one another and are a methoxy or ethoxy group) with glycols or distilled water; a coupling agent represented by SiX3-(CH2)3-O-CH2R; a curing accelerator; an inorganic filler; a brominated epoxy resin; antimony trioxide; and other additives. In the formulas 1 and 2, R is OH or CH3, G is a glycidyl group and n is an integer of 0-3; and in the formula 3, R is H or CH3, G is a glycidyl group and n is an integer of 0-3.
Patent KR-20040060153-A (KR)
Title: liner of winding machine for deflection yoke
Inventor: KIM DONG HYEOK
IPC: H01J9/236
Filed: 2002-12-30
Abstract: PURPOSE: A liner is provided to easily adjust the depth of the groove formed at the neck bent portion of a deflection coil by varying the position of the protrusion formed at the liner. CONSTITUTION: A liner(60) comprises a female mold and a male mold having a concave winding portion and a convex winding portion for winding the deflection coil of a deflection yoke; a fixed block(62) having a part inserted and fixed in the winding portion of the male mold, and a screw groove(62b) formed at the lower portion of the front of the fixing block; a movable block(64) having a rear surface tightly contacting the front surface of the fixed block, a protrusion(64a) formed at the upper portion of the front of the movable block and which forms a groove at the neck bent portion of the deflection coil, and a through hole(64b) formed at the lower portion of the movable block; and a bolt(66) coupled into the screw groove of the fixed block in such a manner that the movable block is fixed to the fixed block.
Patent KR-20040062175-A (KR)
Title: Dry etching equipment and method for etching using the same
Inventor: YOO GWANG JONG
IPC: G02F1/13
Filed: 2002-12-31
Abstract: PURPOSE: A dry etch apparatus and an etching method using the apparatus are provided to reduce a period of time required for loading and transferring substrates to improve productivity. CONSTITUTION: A dry etch apparatus includes a lower electrode(61) on which a substrate(43a) to be etched is mounted and an upper electrode(52). The upper and lower electrodes generate high-frequency electric field. The dry etch apparatus further includes the first lift pin(63) located on the lower electrode to place the substrate on the lower electrode or transfer the substrate, and second lift pin(53) arranged on the upper electrode to transfer the substrate to the first left pin. The edge of the second lift pin is bent in a vertical direction.
Patent KR-20020020824-A (KR)
Title: 재잠금가능한 흡수 용품
IPC: A61F13/56
Filed: 2000-08-23
Abstract: 전방부, 후방부 및 서혜부를 갖는 일회용 흡수용품이 기재되어 있다.  서혜부는 전방부를 후방부와 연결시킨다.  후방부는 제1 말단부 및 제2 말단부를 갖는다. 후방부는 제1 구역 및 제2 구역으로 나뉜다.  제1 구역은 가로방향으로 늘어날 수 있고, 후방부의 제1 말단부에서부터 그에 대해 평행하게 그은 선까지 수직으로 측정한 길이 L 2 를 갖는다.  제2 구역은  후방부의 제2 말단부에서부터 제1 말단부에 대해 평행하게 그은 선까지 수직으로 측정한 길이 L 3 를 갖는다.  제2 구역은 제1 측변 에지, 제2 측변 에지, 제1 영역 A 1 및 제2 영역 A 2 를 갖는다.  제1 영역 A 1 은 제1 측변 에지, 제2 측변 에지, 제2 말단부, 및 제1 말단부에 대해 평행하게 그은 선에 의해 경계가 정해지는 영역을 나타낸다.  제2 영역 A 2 는 제1 선, 제2 선, 제2 말단부, 및 제1 말단부에 대해 평행하게 그은 선에 의해 경계가 정해지는 영역을 나타낸다.   제1 및 제2 선은 제1 및 제2 측변 에지가 제2 말단부와 교차하는 지점에서 제2 말단부에 대해 수직으로 긋는다.  제1 및 제2 선은 제1 말단부에 대해 평행하게 그은 선과 교차한다.  제2 구역의 A 1 /A 2 비가 약 1.3 내지 약 3.5의 범위이다.
Patent KR-20030097591-A (KR)
IPC: H01H1/00
Filed: 1997-05-15
Abstract: 반도체 장치의 웨이퍼 레벨 번-인 공정 및 시험을 수행하기 위한 기술은 상호접속 기판에 장착되거나 또는 그 내부에 합체된 ASIC와 같은 능동 전자 소자와, ASIC와 시험 중인 웨이퍼(WUT) 상의 복수개의 시험 중인 장치(DUT) 사이에 상호접속을 수행하는 금속성 스프링 접촉 요소를 포함하며, 이들 모두는 ASIC가 DUT의 번-인 온도와는 독립적으로 그리고 번-인 온도보다 현저하게 낮은 온도에서 작동될 수 있도록 진공 용기 내에 배치된다.  스프링 접촉 요소는 DUT 또는 ASIC에 장착될 수 있으며, ASIC와 DUT를 정렬시키거나 상호 접속시킬 때에 허용 오차 제한을 경감시키도록 펼쳐질 수 있다.  상호접속 횟수의 현저한 감소와 그 결과인 상호접속 기판의 단순화가 실현될 수 있는데, 이는 ASIC가 호스트 콘트롤러로부터 비교적 적은 수의 신호 라인에 걸쳐 DUT를 시험하기 위한 복수개의 신호를 수신하고 ASIC와 DUT 간의 비교적 다수의 상호접속부에 걸쳐 상기 신호들을 보급할 수 있기 때문이다.  ASIC는 또한 호스트 콘트롤러로부터의 제어 신호에 응답해서 상기 신호들 중 일부분을 발생시킬 수 있다.  물리적 정렬 기술이 또한 기재되어 있다.  ASIC의 정면 상의 미세 기계가공된 만입부가 스프링 접촉 요소의 자유 단부를 포집할 수 있게 해준다.  ASIC의 배면과 이들이 장착되는 상호접속 기판의 정면 상의 미세 기계가공된 특징부는 지지 기판 상에서의 복수개의 ASIC의 정밀한 정렬을 용이하게 한다.
Patent KR-20020051938-A (KR)
IPC: C10G35/12
Filed: 2000-11-28
Abstract: 본 발명은 적어도 몰비 (H 2 ) 1 /(HC)의 수소의 존재 하에 주로 나프텐 탈수소화로 구성되는 제1 단계와, 몰비 (H 2 ) 2 /(HC) 2 로 수행되는 1 이상의 후속 단계를 포함하는, 촉매 이동상으로 방향족 화합물을 제조하는 방법에 관한 것이다. 이 방법은 또한 (H 2 ) 환원 /(HC)의 비의 수소로 촉매를 환원시키는 것을 포함한다. 본 발명은 (H 2 ) 1 /(HC) + (H 2 ) 환원 /(HC) ≤(H 2 ) 2 /(HC) 2 [(HC)는 제1 단계에서의 공급물의 몰량을 나타내고, (HC) 2 는 후속 단계에서의 공급물을 몰량을 나타냄], 또는 (H 2 ) 1 /(HC) + (H 2 ) 환원 /(HC) > (H 2 ) 2 /(HC) 2 [단, (H 2 ) 1 /(HC)는 (H 2 ) 2 /(HC) 2 보다 작음]을 특징으로 한다. 본 발명은 특히 개질에 있어서 유용하다.
Patent KR-20030022774-A (KR)
IPC: H03K19/0185
Filed: 2001-01-26
Abstract: 집적 회로에서 저 전압 신호가 인가된 신호 라인에 혼합 스윙 전압 리피터 회로를 구현하는 방법이다. 저 전압 신호는 풀 스윙 전압 레벨 보다 낮은 전압 레벨을 갖는다. 풀 스윙 전압 레벨은 집적 회로가 동작하는 내부 전압 레벨을 나타낸다. 혼합 스윙 전압 리피터 회로는 신호 라인과 연결되어 있으며 제 1 저 전압 신호를 수신하도록 신호 라인의 제 1 부분과 연결되어 있는 입력 노드와 풀 스윙 전압을 출력하도록 신호 라인의 제 2 부분과 연결되어 있는 출력 노드를 갖는다. 이 방법은 입력 노드와 신호 라인의 제 1 부분을 연결하는 단계를 포함한다. 입력 노드와 혼합 스윙 전압 리피터 회로의 입력 단은 연결되어 있다. 입력 단은 신호 라인의 제 1 저 전압 신호를 수신하도록 구성되어 있다. 입력 단은 제 1 저 저압 신호에 응답하여 저 전압 신호의 전압 레벨 보다 높은 전압 레벨을 갖는 적어도 하나의 레벨 시프터 단의 제어 신호를 출력하도록 구성되어 있다. 또한 이 방법은 출력 노드와 신호 라인의 제 2 부분을 연결하는 단계를 포함한다. 출력 노드는 혼합 스윙 전압 리피터 회로의 출력 단과 연결되어 있다. 출력 단은 적어도 하나의 레벨 시프터 단의 제어 신호에 대응하여 풀 스윙 전압 신호를 출력 노드로 출력하도록 구성되어 있다.
Patent KR-20030045666-A (KR)
IPC: G06F17/30
Filed: 2001-04-06
Abstract: 관계형 데이터베이스에 데이터를 배열하고 디렉토리 서비스 데이터베이스 및 시스템을 검색하는 방법이 제공된다.  특히, 그러나 배타적이지는 않게, 관계형 데이터베이스에서 X.500 또는 LDAP 서비스를 실행하거나 수행하는 시스템 및 디렉토리가 제공된다.  본 출원은 테이블에 있는 데이터 형태를 구성요소로 저장하고 원하는 데이터 엔트리에 대하여 구성요소를 검색하는 데이터베이스 배열을 포함한다.
Patent KR-20040064050-A (KR)
Inventor: KO SEONG GYUN
IPC: G11B19/20
Filed: 2003-01-09
Abstract: PURPOSE: A method for controlling a disk rotative motor in a search mode is provided to control a disk rotative motor with an RPM(Rotation Per Minute) existing between a current RPM and a target RPM in a search mode of a disk, thereby improving data read performance for the disk. CONSTITUTION: A system controller detects a number of a current zone based on position information of a current pickup(201). The system controller detects a current RPM by using the number of the detected zone(202). The system controller detects a number of a target zone based on target position information received from a host(203). The system controller detects a target RPM(204). The system controller detects a proper one RPM by using the current RPM and the target RPM(205). The system controller moves a pickup unit to a target position of a disk according to a search mode, and controls a spindle motor with the detected RPM(206).
Patent KR-20040064900-A (KR)
Title: Complex record player
Inventor: SON YOUNG SUK
IPC: G11B31/00
Filed: 2003-01-10
Abstract: PURPOSE: A complex record player is provided to integrate a rice containing box and a Kimchi refrigerator with the complex record player, in order to unify functions of the rice containing box and the Kimchi refrigerator, thereby simplifying domestic duties. CONSTITUTION: Doors(3) are installed on left/right lower ends of a record player(1). A Kimchi refrigerator(7) and a rice containing box(2) for separately taking out grain are installed inside the record player(1). Rollers(4) moving on rails(10) are disposed on certain sides of the Kimchi refrigerator(7) and the rice containing box(2). The rails(10) support the rollers(4) for an easy reciprocating motion, and are installed in upper/lower sections of the record player(1). Multipurpose drawers(8) are installed on upper/lower sides of the record player(1).
Patent KR-20040064563-A (KR)
Title: Accessary made of composite special quality of material
Inventor: SON YOUNG SUK
IPC: A44C27/00
Filed: 2003-01-13
Abstract: PURPOSE: Provided is an accessary made of a composite special quality of the material which emits far infrared rays and an anion, intercepts electromagnetic waves, makes the product firm and prevents rust. CONSTITUTION: The accessary made of the composite special quality of the material comprises special alloy materials such as glass, ceramics, jade, jewels, gold and silver by steps of coating the alloy materials or putting the materials being 100kg in weight in a blast furnace; heating the furnace; molding the melted fluid for an accessary shape frame; polishing and heating the molded accessary at 500-1500 deg.C for 5 hours or more; annealing the accessary in an annealing processor at 400-1400 deg.C for 3 hours or more; and dipping the accessary in a processor for 5 minutes. The materials are composed of gold, silver, copper, iron, moss, inorganic substance, bismuth, other non-iron, special alloy materials, glass, fish and shell skin, chinaware, jade, other jewels, ceramic, germanium, tourmaline raw stone, all sorts of raw stone, soil, all kinds of animals and plants, bacteria, mold at their respective rates.
Patent KR-20040066682-A (KR)
Inventor: KIM JUN YUN
IPC: B65D51/28
Filed: 2003-01-20
Abstract: PURPOSE: A structure of water bottle for inputting additions is provided to correspond to increased interest in health by putting materials having taste or aromatic, or nicely affecting human body into vessel, and by inputting them in the water bottle, so that they can be well solved. CONSTITUTION: The structure of water bottle for inputting additions includes; a drain tube(11) forming a mouth, through which contents of bottle for involving liquid are drained, and extended and shaped as one body to have a much smaller diameter than bottle body; a top stopper(10) coupled with the drain tube to selectively cover the latter and closing and opening the mouth; a bottle body(20) having an opened bottom; an input tube(21), into which a water flow vessel(30) is inserted, forming an opened mouth of the bottom of the bottle body and extended and shaped as one body to have a smaller diameter than the bottle body; and a bottom stopper(40) coupled with the input tube(21) to selectively cover the latter, and closing and opening the opened mouth of the bottom.
Patent KR-20040069555-A (KR)
Inventor: HAN SEUNG WOO
IPC: B66F9/075
Filed: 2003-01-29
Abstract: PURPOSE: An electric drive axle device for a forklift is provided to improve the driving efficiency of the forklift with a two-stage shift of a forward and backward by the control using a planetary system. CONSTITUTION: A drive gear(2) is connected to a drive shaft(1) of a motor(M) and the drive gear is connected to transmit the driving force by sequentially engaging an idle gear(3) with a driven gear(4) and then directly connecting to a Synchro(5) to make the forklift rotate. A forward/backward movement and a rotation of a wheel(9) is controlled by left/right movement of the driven gear. For above structure, a DIFF housing(6) and a DIFF housing break are provided.
Patent KR-20030068457-A (KR)
Title: 촬영기능을 가진 쌍안경
IPC: G02B23/18
Filed: 2003-02-13
Abstract: 케이싱, 촬상소자를 구비한 카메라, 및 접속단자를 포함하고 있는 촬영기능을 가진 쌍안경.  접속단자는 카메라의 촬상소자에 의해 얻어진 화상 데이터를 쌍안경의 외부의 장치로 출력한다.  접속단자는 케이싱의 전방벽상에 구비된다.
Patent KR-20040077114-A (KR)
Inventor: KIM SEONG
IPC: H04W28/02
Filed: 2003-02-28
Abstract: PURPOSE: A method for distributing a downlink packet in a mobile communication packet network is provided to simultaneously transmit a plurality of packet data with a different QoS(Quality of Service). CONSTITUTION: A mobile terminal transmits a PDP(Packet Data Protocol) context activation request message to an SGSN(Serving GPRS Support Node)(S10). The SGSN selects GGSN(Gateway GPRS Serving Node) and transmits a PDP context generation request message to the GGSN(S11). The GGSN transmits a PDP context generation response message to the SGSN(S12). The SGSN transmits a PDP context update request message to the GGSN(S14) and the GGSN transmits a response message according to the update request to the SGSN(S15). The SGSN informs the mobile terminal that the PDP context has been successfully activated(S16).