baber/WOPTO huggingface dataset:
Patent KR-20050106037-A (KR)
Title: Elastic fastening tab, fastening system and method for manufacturing the same
Inventor: LOESCHER CLAUS W
IPC: A61F13/15
Filed: 2004-02-05
Abstract: An elastic laminate fastening tab (2) comprising adjacent first and second closure elements (6, 8), each having a first face (10, 12) and a second face (14, 16), wherein the first face of each closure element is coated with a pressure sensitive adhesive (20, 22), an elastic film (18) attached to each closure element first face, the elastic film having two end portions (24, 26) connected to the first and second closure elements, respectively, and an intermediate portion therebetween, and a blanking film (28, 30) interposed between the closure elements and the elastic film. The invention also provides a fastening system comprising such a fastening tab and a method of manufacturing the same.
Patent KR-20060008287-A (KR)
Title: Image-processing method and apparatus, and image-forming apparatus
Inventor: NAKANO NAOKI
IPC: B41J2/01
Filed: 2004-12-20
Abstract: In an image-processing method and apparatus, dots forming a step-change part of an outline of an image of characters and/or graphics which image is subjected to half- tone processing are detected, and dots surrounding the detected dots forming the step-change part are transformed into respective dot data each having a size that is smaller than a size of the detected dots forming the step- change part. In the image-processing method and apparatus, one of different transformation methods is selected according to an inclination of the outline in order to produce the dot data in the transforming.
Patent KR-20050113208-A (KR)
Title: Device for the analgesic immobilisation of broken ribs
Inventor: BOLLA KALMAN
IPC: A61F5/03
Filed: 2004-03-01
Abstract: The invention relates to a device (22) for analgesic immobilisation in the event of thorax or rib fractures. Said immobilisation device (22) is characterised in that it comprises a flat splint element (24) which covers a large area of the region of the break (19), and in that it is provided with an adhesive layer (26) which is located on the side thereof facing the body and is used to adhere the immobilisation device (22) to the body.
Patent KR-20060009260-A (KR)
Title: Communication interface for diagnostic circuits of an integrated circuit
Inventor: KIMELMAN PAUL
IPC: G01R31/3185
Filed: 2003-09-17
Abstract: An integrated circuit is provided with diagnostic circuitry, such as serial scan chains or debug bus access circuits, with which communication is established using an interface circuit coupled with a bi-directional serial link to an external diagnostic device. The bi-directional serial link carries both data and control signals. The serial protocol can include provision for a pacing signal whereby the diagnostic circuitry can indicate to the external diagnostic device when it is ready to receive more data and/or when it has completed a particular diagnostic operation. This self-pacing ability is strongly advantageous. A training signal generated by the external diagnostic device may be detected by the interface circuit on initialisation and used to derive sampling point timings. Thus, the need to provide a separate clock signal can in such circumstances be avoided.
Patent KR-20050111651-A (KR)
Title: Projector
Inventor: ITO YOSHITAKA
IPC: H04N9/31
Filed: 2001-10-31
Abstract: A screen is disposed almost in parallel to the yz plane. The reflection plane of a first mirror is disposed almost vertical to the yz plane and tilted at about 45 deg. to the xy plane. At least an electro-optical device, a color synthesizing means and a projection lens are disposed along the xy plane and in such a way that the center of an image beam emitted from a color synthesizing optical system is incident onto the first mirror in parallel to the xy plane and at a deg. to the y axis. A second mirror is disposed almost vertical to the xz plane and at about 45 deg. minus a/2 to the yz plane so that an image beam as light reflected from the first mirror is reflected again off the second mirror with the center of the image beam shone almost vertically onto the center of the screen. Accordingly, the positional adjustment of the optical system constituting the projector is facilitated and the entire apparatus is downsized.
Patent KR-20060020634-A (KR)
Title: Semiconductor package having filler metal of gold/silver/copper alloy
Inventor: LOBSINGER JOSHUA DAVID
IPC: H01L23/52
Filed: 2004-05-19
Abstract: A semiconductor package to which a potential difference is applied has two or more of the components thereof bound together using a filler metal. The filler metal is a solid solution structure in which the metallic components are atomically dispersed, and may comprise an alloy of gold, silver and copper. A preferred form of the filler metal comprises 60Au20Ag20Cu. Such filler metals in accordance with the invention provide the advantages of silver-based filler metals without the silver migration that leads to eventual shorting of the semiconductor package. When water condenses to form a continuous layer thereof within the semiconductor package due to moisture seeping into the package and temperature changes, the silver within the filler metal does not ionize, and therefore a buildup of silver deposits and eventual shorting of the package does not occur.
Patent KR-20060012313-A (KR)
Title: Phase measurement device, method, program, and recording medium
Inventor: NAKADA JUICHI
IPC: G01R23/20
Filed: 2004-05-19
Abstract: When a signal having two or more frequency components is fed to a circuit to be measured, a phase of the signal output from the circuit to be measured is measured. A phase measurement device (1) measures an output when an input signal having two input frequency components omega10 and omega20 is fed to an amplifier (circuit to be measured) (20). The phase measurement device (1) includes: an orthogonal conversion section (30) for subjecting the output of the amplifier (20) to an orthogonal conversion by using an average frequency omega0 which is an average of omega10 and omega20; a phase acquisition section (40) for acquiring phases Theta1 and Theta2 of the input frequency components in the output of the orthogonal conversion section (30) and a phase Theta3 of a distortion component; a match time/phase measurement section (50) for measuring the match time Deltat during which the Theta1 is matched with the Theta2 and measures the Theta1 (Deltat) during that time; a distortion component phase measurement section (60) for measuring the phase Theta3 (Deltat) of the distortion component in the match time Deltat; and a display section (70) for displaying the Theta1(Deltat) and the Theta3 (Deltat).
Patent KR-20060056280-A (KR)
Inventor: JEONG HEE SEONG
IPC: G02B6/42
Filed: 2003-05-31
Abstract: 본 발명은 무선 광통신 시스템에서 레이저 다이오드, 포토 다이오드 및 송신기와 수신기 렌즈 중 어느 것도 기계적으로 움직여지거나 정렬될 필요 없이 영구적으로 고정하여 구조가 단순하고 일정한 퍼짐각을 갖는 표준화된 무선 광통신용 송신기, 수신기 또는 송신기와 수신기가 결합된 송수신기를 제공한다. 
     본 발명에 따른 무선 광통신용 송신기, 수신기 또는 송수신기 제작을 위한 패키징 방법은 송신기가 원하는 퍼짐각을 가지며, 수신기가 최대 감도를 갖도록 송신기, 수신기 또는 송수신기 렌즈에 대해서 레이저 다이오드와 포토 다이오드를 이동시킨 후 렌즈와 레이저 다이오드, 포토 다이오드를 영구 고정하는 것을 특징으로 한다. 
       
     퍼짐각(divergence angle), 포토 다이오드, 레이저 다이오드, 레이저 감지카드, 폴딩 미러(Folding mirror)
Patent KR-20060039862-A (KR)
Title: Adaptable processing element for a processing system and a method of making the same
Inventor: LAWSON JOHN
IPC: H01L21/3065
Filed: 2004-05-03
Abstract: An adaptable processing element (50,150- 156) having multiple configurations is provided for use in a processing system. The processing element comprises a primary component (182, 200, 202, 230) and at least one detachable component (184, 208, 232). The detachable component can be retained for one configuration and removed for another configuration. The detachable component may include a punch- out or knock-out (210, 214, 216) located, for example on its right-hand side or its left-hand side in order to permit access of a gas supply line to a processing chamber for either a right-hand orientation or a left- hand orientation, respectively. Additionally, for example, the detachable component can be retained or removed to permit flexible use with different size processing chambers. A method of making the processing element having these components is also provided. The method may provide a roughening of one or more exposed surfaces on the processing element to improve the adhesion of materials on these surfaces during processing. The roughening procedure may comprise belt sanding the one or more exposed surfaces to produce surface roughness. The roughness may, for example, be about or in excess of Ra=250 mil.
Patent KR-20070013988-A (KR)
Title: Resin sheet having fine decorative patterns and method of producing the same
Inventor: MURATA NOZOMU
IPC: C08J7/046
Filed: 2005-08-17
Abstract: [PROBLEMS] To provide a resin sheet with fine decorative pattern and a process for easily producing the same. [MEANS FOR SOLVING PROBLEMS] A resin sheet with fine decorative pattern. This resin sheet is a transparent resin sheet overlaid with a three-dimensionally cured resin layer and is characterized in that the three-dimensionally cured resin layer is provided with a decorative pattern. The surfaces of the three-dimensionally cured resin layer and transparent resin sheet can undergo transparent printing of letters and numerals by silk printing technique and can be colored by silk printing technique. The resin sheet with decorative pattern can be produced by first piling a metal plate with decorative pattern, a three-dimensionally curable coating material and a transparent resin sheet one upon another, subsequently exposing the upper side of the transparent resin sheet to exciting rays, such as ultraviolet ray or radiation, or heating to thereby cure the three-dimensionally curable coating material, and thereafter detaching the resin sheet with decorative pattern from the metal plate. ® KIPO & WIPO 2007
Patent KR-20060080545-A (KR)
Inventor: OSADA KENICHI
IPC: G11C13/02
Filed: 2006-01-04
Abstract: 본 발명은 반도체장치에 관한 것으로서 상변화 소자의 신뢰성을 향상시키기 위하여 불필요한 전류를 소자에 흐르게 하지 않게 부가되는 온도에 의해 상태가 변화함으로써 정보를 기억하는 메모리 셀과 입출력 회로를 갖고 전원의 활성화시에는 전원 회로가 전환될때까지 워드선을 오프 하여 불필요한 전류가 소자에 흐르는 것을 방지 데이터의 파괴를 막을 수가 있는 기술을 제공한다.
Patent KR-20070076160-A (KR)
Title: A liquid crystal display and driving method the same
Inventor: HEO YONG JOON
IPC: G09G3/20
Filed: 2006-01-18
Abstract: A liquid crystal display device and a driving method thereof are provided to minimize degradation of image quality by improving response characteristic of an LCD in turning on/off of the LCD. A liquid crystal display device includes a switching control signal generator and a gamma voltage generator(112). The switching control signal generator compares image data gray levels of the previous and current frames with each other and generates a switching control signal based on the variation direction of the gray level. The gamma voltage generator outputs one of first and second gamma voltages according to a signal from the switching control signal generator. The first gamma voltage is higher than the upper-most gamma voltage by at least one gray level. The second gamma voltage is lower than the lower-most gamma voltage by at least one gray level. The gamma voltage generator includes first and second switching elements(171,172).
Patent KR-20070078172-A (KR)
Title: Process for preparing quaternary nitrogen-containing cellulose ether
Inventor: LEE CHANG JAE
IPC: C08B3/00
Filed: 2006-01-26
Abstract: A process for preparing quaternary nitrogen-containing cellulose ether using quaternary ammonium compound treated with an organic acid and cellulose ether is provided to inhibit formation of salt to simplify and make the process environment-friendly. The process comprises preparing quaternary nitrogen-containing cellulose ether from quaternary ammonium compound and cellulose ether, in which the quaternary ammonium compound is activated with an organic acid in a catalytic amount. The orgnic acid is at least one selected from paratoluene sulfonic acid, paratoluene sulfinic acid, acetic acid, butiric acid, palmitic acid, oxlaic acid and tartaric acid. The quaternary ammonium compound is reacted in an equivalent amount of 0.01 to 3.0 to an organic acid. The cellulose ether derivative is selected from methyl cellulose, benzyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl cellulose, ethylhydroxyethyl cellulose, hydroxyethylmethyl cellulose and hydroxybutylmethyl cellulose. The quaternary ammonium compound is 2,3-epoxypropyl tri-C1-22 alkyl ammonium chloride.
Patent KR-20060097576-A (KR)
Inventor: ONO TOSHIAKI
IPC: F16J1/22
Filed: 2006-01-27
Abstract: 본 발명의 과제는 밀폐형 압축기에 있어서, 원가적으로도 유리한 구조이고, 효율이 좋고, 신뢰성이 우수한 것으로 하는 것이다.   
     밀폐형 압축기는, 모터로부터의 회전력을 전달하는 크랭크축(6)과, 크랭크축측에 구면부를 갖는 구형 시트(8a)를 구비한 피스톤(8)과, 일단부에 구형 시트(8a)에 접속하는 구체부(11)와 타단에 크랭크축(6)에 끼워 맞추는 링부(12)와 그 링부(12)와 구체부(11)를 연결하는 로드부(10)를 갖는 커넥팅 로드(9)와, 밀폐 용기 내에 저유되는 윤활유를 갖고 크랭크축(6)을 통해 윤활유를 공급하도록 구성되어 있다. 이 밀폐형 압축기는 크랭크축(6)에 제1 오일 공급 구멍(19)을 마련하고, 커넥팅 로드(9)에 제1 오일 공급 구멍(19)으로부터 나온 윤활유를 구형 시트(8a)로 공급하는 제2 오일 공급 구멍(18)을 마련하고, 구형 시트(8a)와 구체부(11) 사이에 제2 오일 공급 구멍(18)으로부터 나온 윤활유를 일시 모아두는 오일 포켓(20)을 설치하고 있다. 
       
     밀폐형 압축기, 피스톤, 구형 시트, 오일 포켓, 커넥팅 로드
Patent KR-20060096274-A (KR)
Inventor: NOMURA TOMOHIRO
IPC: H05K1/02
Filed: 2006-01-31
Abstract: 반도체소자의 전극단자에 접속되는 범프(bump)를 고정밀도로 형성할 수 있고, 배선 패턴이 극히 고밀도로 형성되는 경우에도, 전기적 단락을 방지하여 신뢰성 높은 배선 기판을 제공한다. 
     기판(12)의 한쪽 면에 배선 패턴(14)이 형성되어, 상기 배선 패턴(14)에 형성된 이너 리드(14a)에 전기적으로 접속해서 반도체소자의 전극단자에 접합되는 범프(30)가 형성된 배선 기판(40)의 제조 방법에 있어서, 한쪽 면에 배선 패턴(14)이 형성된 기판(12)에 대하여 기판의 다른 쪽 면으로부터 레이저가공을 실시하여 내단면에 상기 배선 패턴이 노출하는 오목구멍(12a)을 기판에 형성하고, 상기 기판(12)에 전해 도금을 실시하여, 상기 오목구멍(12a)에 도금을 쌓아 올림으로써 상기 기판(12)의 다른 쪽 면으로부터 단면이 돌출하는 범프(30)를 형성한다. 
       
     배선 기판, 칩 온 필름 형식의 배선 기판, 배선 기판의 제조 방법, 범프, 전해 도금
Patent KR-20070063390-A (KR)
Title: Audio data processing method for minimizing transmission delay time and/or reducing noise in a wireless audio system
Inventor: KIM SUNG KYU
IPC: G11B20/02
Filed: 2006-02-07
Abstract: A data processing method for minimizing transmission delay or reducing a noise in a wireless audio system is provided to minimize the transmission delay of an audio signal by approaching an audio output value of a corresponding part to a certain value or controlling a previous audio signal of a similar waveform to be repeatedly outputted when the noise is generated by the loss/damage of the audio signal in wireless transmission and reception. A receiving device of a wireless audio system receives a wireless signal from a transmitting device(201). The receiving device confirms whether the received wireless signal is lost and damaged(202). When the received wireless signal is lost and damaged, the receiving device approaches an audio output value of a corresponding part to a certain value and controls the output of the wireless signal(203,204).
Patent KR-20070081032-A (KR)
Title: Automatic tuning system and method for liquid crystal display
Inventor: LEE SEUNG KYU
IPC: G09G3/20
Filed: 2006-02-09
Abstract: An automatic tuning system and method for a liquid crystal display are provided to reduce flickers from a displayed image by automatically setting optimal characteristic variables for various LCD devices. An automatic tuning system(100) for a liquid crystal display includes a brightness unit(102), a host(101), and a test board(103). The brightness unit detects brightness of the light which is emitted from an LCD(Liquid Crystal Display) device(110), and provides the brightness information to the host. The host searches for optimal characteristic variables corresponding to specifications of the LCD device input from outside by referring to flicker information from the brightness unit. The test board is connected to an external interface of the host and provides the characteristic variables from the host to the LCD device.
Patent KR-20070076349-A (KR)
Title: Lens assembly
Inventor: TAGUCHI RYUICHI
IPC: G03B11/00
Filed: 2006-02-27
Abstract: A lens assembly is provided to easily remove dusts by mounting a filter in a lens holder even when a user knows the dusts attached to the filter after assembling the camera. A lens assembly includes a lens(12), a lens holder(14), and a filter(16). The lens holder holds the lens. The filter is at least partially mounted on the lens holder. The filter is disposed between the lens and a CCD or a photoresist film. The filter includes a directional filter. The directional filter is one selected from the group consisting of an optical low pass filter, a polarizing filter, and a back light compensation filter. A filter mounting portion(20) is mounted at the lens holder. At least one through-hole is formed at a side of the filter holder. A through groove is formed at a side of the filter mounting portion to communicate with the through hole of the filter holder.
Patent KR-20070095535-A (KR)
Title: 7 shift automatic transmission's power train
Inventor: SHIM HYU TAE
IPC: F16H3/62
Filed: 2006-03-21
Abstract: A power train of a 7 shift automatic transmission is provided to reduce a relative speed between a sun gear and a clutch and a relative speed between brakes and to perform easily a two-stage or a three-stage skip shift operation. A first planetary gear set(10) includes a first sun gear(12) fixed at an automatic transmission case and a first ring gear(14) connected to an input shaft(2) of an automatic transmission in order to form a speed reduction ratio. A second planetary gear set(20) includes a second sun gear(22) to be selectively connected with the speed reduction ratio. A third planetary gear set(30) includes a third sun gear(32) connected to the second sun gear. A fourth planetary gear set(40) includes a fourth ring gear(44) connected to the second ring gear and a third carrier(36), a fourth carrier(46) connected to the third ring gear in order to be connected to an output shaft(4) of the automatic transmission. A first clutch unit(50) connects selectively the first ring gear and the input shaft with a fourth sun gear(42). A second clutch unit(52) connects selectively a first carrier(16) with the second sun gear and the third sub gear. A third clutch unit(54) connects selectively the first ring gear and the input shaft with the third carrier and the fourth ring gear. A first brake unit(60) controls the second ring gear. A second brake unit(62) controls a second carrier(26). A third brake unit(64) controls the second sun gear and the third sun gear. A one-way clutch(70) is installed between the second ring gear and a housing(6) of the automatic transmission.
Patent KR-20060102520-A (KR)
Inventor: LI XIN SHAN
IPC: H01L41/187
Filed: 2006-03-22
Abstract: 개시물은, 높은 내전압 및 긴 내구 수명을 가진 압전 요소, 액체 분사 헤드 및 액체 분사 장치이다. 상기 압전 요소는 기판 위쪽에 제공되는 하부 전극, 상기 하부 전극 위쪽에 제공되는 압전층, 및 상기 압전층 위쪽에 제공되는 상부 전극을 포함하고, 그리고 상기 압전층의 전기 저항은 20MΩ·㎝보다 낮지 않다.
Patent KR-20070097861-A (KR)
Title: Hot floor panel
Inventor: LEE HO YOUNG
IPC: F24D3/12
Filed: 2006-03-29
Abstract: A hot floor panel is provided to allow ease of construction and repair and to improve water resistance and heat efficiency of flooring. A hot floor panel includes an upper plate(10), a heater, an insulating part, and a supporting part(20). The upper plate emits far infrared ray and is arranged on a top of the hot floor panel. The heater is arranged beneath the upper plate and heats the upper plate. The insulating part is arranged beneath the heater for minimizing heat loss of the heater. The supporting part is arranged beneath the insulating part for supporting physical elements such as load, pressure, and impact applied on the hot floor panel without bending.
Patent KR-20060034681-A (KR)
Title: 바이오 보청기
Inventor: JUN MAL SOO
IPC: H04R25/00
Filed: 2006-04-03
Abstract: 본 발명은 바이오 보청기에 관한 발명이다. 본 발명은 보청기에 있어서, 기 보청기는 콜로이드 실버와, 폴리메탈아크릴 레진 (PMMA) 을 포함한 것을 특징으로 한다. 또한, 상기 보청기는 플라스틱, 금속, 합성수지, 고무, 라텍스, 실리콘 중의 어느 하나와 콜로이드 실버를 포함한다. 
     그리고 본 발명은 상기 콜로이드 실버 대신에 토르말린을 포함함으로써, 본 발명은 보청기 자체가 살균, 항균력이 있고 귀지가 많이 끼지 않고 보청기 자체가 원적외선 음이온이 발산됨으로써 보청기를 착용하는 사람의 귀 건강에 극히 양호한 효과가 있다. 
       
     보청기, 콜로이드 실버, 콜로이드 백금, 콜로이드 금, 토르말린
Patent KR-20060035695-A (KR)
Inventor: LEE WOO JIN
IPC: G06K17/00
Filed: 2006-04-05
Abstract: 본 발명은, 리더 안의 제어 소자가 무선 인식 태그로부터의 신호를 인식하는 방법으로서, 단계들 (a) 내지 (d)를 포함한다.  단계 (a)에서는, 무선 인식 태그로부터의 신호가 이진 데이터로 변환된다.  단계 (b)에서는, 기준 전제 데이터가 사용되어 이진 데이터에 포함되어 있는 전제 데이터가 검사된다.  단계 (c)에서는, 단계 (b)에서 검사 오류가 발생되면, 기준 전제 데이터의 시작 위치가 단위 길이만큼 지연되어 설정된다.  단계 (d)에서는, 단계 (b)에서 전제 데이터의 검사가 통과될 때까지 단계들 (b)와 (c)가 반복 수행된다.
Patent KR-20060107934-A (KR)
Inventor: AHN JEONG HWAN
IPC: G06T15/00
Filed: 2006-04-10
Abstract: 3D 압축 데이터 생성, 복원 방법 및 그 장치가 개시된다. 본 발명의 3D 압축 데이터 생성 방법은 3D 압축 데이터 시퀀스에 대한 구성정보를 생성하는 단계; 3D 압축 데이터 시퀀스에 포함되는 복수의 개별 3D 압축 데이터를 생성하는 단계; 및 개별 3D 압축 데이터들을 합하여 3D 압축 데이터 시퀀스를 생성하고, 3D 압축 데이터 시퀀스와 상기 3D 압축 데이터 시퀀스에 대한 구성정보와 합하여 출력하는 단계를 포함하고, 개별 3D 압축 데이터는 개별 3D 압축 데이터에 대한 구성정보를 생성하는 단계; 개별 3D 압축 데이터의 데이터 타입에 따라 시작코드를 생성하는 단계; 및 데이터 타입에 따른 3D 압축 데이터를 생성하는 단계를 포함함을 특징으로 한다.
Patent KR-20070102281-A (KR)
Title: Lotus lamp elevating apparatus
Inventor: KIM KI CHAN
IPC: A47G33/00
Filed: 2006-04-14
Abstract: A lotus lamp elevating apparatus is provided to install a lotus lamp on the ground by ascending/descending a frame in which the lotus lamp is installed. A lotus lamp elevating apparatus includes a lotus lamp frame(110), a rotation axis(120), a wire(130), a driving part, a supporting frame, a guiding frame, and a controller. The lotus lamp frame(110) is installed at the bottom of the ceiling(1) of a temple, and is formed in a lattice shape to install a lotus lamp therein. The rotation axis(120) is installed inside the ceiling(1) of the temple, and has a plurality of drums and a first rotation gear. The wire(130) is wound around each drum of the rotation axis(120) to ascend and descend the lotus lamp frame(110). The driving part forwardly/reversely rotates according to external control, and provides rotation force to the rotation axis(120). The supporting frame is installed in the frame or post inside the ceiling(1) of the temple, and horizontally supports the rotation axis(120). The guiding frame is installed at a position corresponding to each wire(130), and guides each wire(130) to be wound around the drum of the rotation axis(120). The controller supplies power to each component, and controls the forward/reverse rotation of the driving part and the brightness of the lotus lamp.
Patent KR-20070103558-A (KR)
Title: Method for providing internal messenger service to internal or external user terminal
Inventor: LIM HYONG MUK
IPC: G06Q50/30
Filed: 2006-04-19
Abstract: A method for providing an internal messenger to a user terminal is provided to apply to all user terminals executing an internal message program, and protect security of the terminal connected to the internal message program from the outside as well as the inside of a company. An internal messenger is executed in the user terminal(S1). The internal messenger requests an ID and a password for logging in to the internal messenger to the user(S2). If user successfully logs in to the internal messenger, it is determined whether connection to the internal messenger is the internal or external connection based on an IP(Internet Protocol) of the user terminal(S8). If the external connection is determined, the internal messenger transmits the ID and the password to the VPN(Virtual Private Network) linked with a security protocol, and the VPN performs user identification with the ID and the password, and completes the connection to the internal message of the user terminal by forming a tunnel for exchange packets(S13). If the internal connection is determined, the user terminal is promptly connected to the internal messenger.