baber/WOPTO huggingface dataset:
Patent KR-20030052022-A (KR)
Title: Method for Fabricating of Semiconductor Device
Inventor: RYU HYEOK HYEON
IPC: H01L27/092
Filed: 2001-12-20
Abstract: PURPOSE: A method for fabricating a semiconductor device is provided to effectively reduce sheet resistance of a p-type metal oxide semiconductor(PMOS) gate poly by forming a thick salicide layer on a gate electrode, and to prevent a junction leakage characteristic from being deteriorated by a reduced junction depth by eliminating the necessity of forming a thick salicide layer on a source/drain region. CONSTITUTION: A gate is formed on a semiconductor substrate(11) having an isolation layer. The first and second insulation layers are sequentially formed on the substrate including the gate and are selectively removed to be left on both side surfaces of the gate so that an insulation layer sidewall(17) is formed. The source/drain region(18,19) is formed in the substrate at both sides of the gate and the insulation layer sidewall. A blocking layer(20) is formed on the substrate so that the upper surface of the gate is completely covered. The blocking layer is eliminated to expose a predetermined thickness of the gate and the insulation layer sidewall while the first insulation layer at both sides of the exposed gate to expose both side surfaces of the upper portion of the gate. The first salicide layer(23) is formed on the exposed gate and both side surfaces of the upper portion of the gate. The blocking layer is completely removed to expose the substrate including the source/drain region. The second salicide layer(26) is formed on the substrate including the upper surface of the gate and the source/drain region.
Patent KR-20030052557-A (KR)
Title: A Method for Increasing Dissolution Rate of Tin Granule
Inventor: KIM TAE YEOP
IPC: C25D3/32
Filed: 2001-12-21
Abstract: PURPOSE: A method for increasing dissolution rate of tin granules is provided to dissolve metal tin granules into plating solution so that dissolution reaction of tin is promoted, and generation of sludge, tin oxide, is reduced in the process of dissolving metal tin granules filled in a metal dissolution tank when electroplating tin. CONSTITUTION: In a process for dissolving metal tin granules into plating solution to supply tin ions in tin electroplating method using an insoluble anode, the method for increasing dissolution rate of tin granules is characterized in that precious metal coated granules having a diameter of 1 to 10 mm in which one or more precious metals selected from the group consisting of palladium, platinum and gold are coated on titanium granules along with tin granules are added to the plating solution, wherein the precious metal coated granules are added to the plating solution in such a way that a ratio of surface area of the precious metal coated granules to the total surface area of the tin granules is 10 to 50%.
Patent KR-20030052772-A (KR)
Title: Forward link data transmission method of mobile communication
Inventor: JUNG DAE HO
IPC: H04B7/26
Filed: 2001-12-21
Abstract: PURPOSE: A method for transferring forward link data of a mobile communication is provided to stably transfer data by allowing a base station and a terminal to negotiate a variable data rate on a forward link. CONSTITUTION: In order to set up a session, an AN(AP/APC) transfers A9-Setup-A8 to a PCF for setting an A8 connection and drives a TAS-Setup. In order to request a value of a certain data rate, AT transfers a Data Rate Request message to the AN(AP/APC). The AN(AP/APC) transfers a Data Rate Response message in response to the data rate requested by the AT.
Patent KR-20030057143-A (KR)
Title: An array substrate for In-Plane switching mode LCD and the method for fabricating the same
Inventor: KIM JEOM JAE
IPC: G02F1/1343
Filed: 2001-12-28
Abstract: PURPOSE: An array substrate for a transverse field LCD(Liquid Crystal Display) device and a manufacturing method thereof are provided to realize high definition and high image quality by securing a high aperture ratio and preventing the streaming of light due to a viewing angle. CONSTITUTION: An array substrate includes a semiconductor line(121) extending to the lower portion of a source electrode(126) and a data line(124) in a semiconductor layer(120). The semiconductor line improves the attachment characteristic of the data line. In the upper portion of a pixel area(P), a pixel electrode(130) connected with the drain electrode and a common electrode(117) formed parallel to the pixel electrode and connected with a storage line(116) are formed. The common electrode has many vertical portions(117b) vertically extending from the storage line and crossing a vertical portion(130b) of the pixel electrode and a horizontal portion(117a) interconnecting the vertical portions. A transparent electrode pattern(136) is formed to contact with a horizontal portion(130c) of the pixel electrode through a contact hole(134) and extend to the upper portion of a gate line(112).
Patent KR-20030057755-A (KR)
Title: Multi band repeater monitoring system and method using a CDMA terminal
Inventor: LEE SANG GEUN
IPC: H04B17/40
Filed: 2001-12-29
Abstract: PURPOSE: A method and an apparatus for monitoring a multiband repeater by using a CDMA(Code Division Multiple Access) terminal are provided to perform hopping of other CDMA bands and collect data concerning a repeater monitor of each CDMA band. CONSTITUTION: A repeater monitor device(111) are booted(S401). So, the device(111) is maintained as an operable state and thereafter produces parameters relating to authentication(S403). A monitor device authentication request including the parameters are transmitted to the repeater monitor server(103)(S405). Thereafter, the server(103) performs an authentication procedure with reference to the data stored within the system of the server(103)(S407) by applying the parameters. When the authentication parameters are coincided with the identifiers of terminals and switching centers, the server(103) confirms the authentication, if not, the server(103) transmits the authentication wrong message to the repeater monitor device(111)(S411).
Patent KR-20010072250-A (KR)
Title: 냉장고 문 오프너
IPC: E05B7/00
Filed: 1999-08-03
Abstract: 냉장고는, 전방 표면에서 전방으로 개구하는 열적 단열 하우징(1)과; 하우징의 전방 개구부를 선택적으로 개폐하는 문(9, 10, 11, 12; 59, 60; 63, 64, 65; 57, 58; 59, 60)과; 하우징의 개구부 모서리(13)와 맞물릴 수 있는 문의 일부에 고정되는 자석 개스킷(14, 14b)과; 개폐 위치 사이의 이동을 위해 문에 연결되어 각각 문을 개폐하는 추축 지지 손잡이(24, 34; 46); 및 돌출 및 후퇴 위치 사이에서 이동을 위해 손잡이(24, 34; 46)에 구동되게 연결된 트리거 부재(26; 50)를 포함한다. 트리거 부재는, 손잡이가 폐쇄 위치로부터 개방 위치를 향해 선회함에 따라, 후퇴 위치로부터 돌출 위치를 향해 이동하여, 개구부 모서리에 맞닿게 됨으로써 자석 개스킷 및 개구부 모서리 사이의 접촉을 물리적으로 해제시킨다. 트리거 부재는, 손잡이가 폐쇄 위치에서 유지되는 동안은 하우징의 개구부 모서리의 맞닿는 면으로부터 거리를 두고 이격되나, 문을 열기 위해 손잡이를 폐쇄 위치로부터 개방 위치를 향해 선회시킴에 따라 하우징의 맞닿는 면과 일시적으로 맞물리게 된다.
Patent KR-20010071082-A (KR)
Title: 비닐 화합물의 제조 방법
IPC: C08G59/14
Filed: 1999-08-02
Abstract: 본 발명은 아미노비닐 화합물에대해 반응성인 물질과 아미노비닐 화합물이 반응할 때, 그것의 비닐기는 유지되는 비닐 화합물, 특히 비닐 에테르 화합물을 제조하는 방법에 관한 것이다. 본 발명은 또한 상기 방법으로 제조할 수 있는 비닐 화합물, 상기 비닐 화합물을 포함하는 조성물, 상기 화합물의 용도 및 비닐 화합물을 제조하기 위한 아미노비닐 화합물의 용도에 관한 것이다.
Patent KR-20010075147-A (KR)
Title: 참석 감지 시스템을 내장하고 있는 자동차 시트
IPC: B60N2/90
Filed: 1999-09-10
Abstract: 본 발명은 내장된 참석 감지 시스템을 갖는 자동차 시트에 관한 것이다.  상기 시트는, 시트 패딩(seat padding) 또는 시트 팬(seat pan)을 지지하는 상부 프레임(10) 및 자동차에 고정되어 있는 하부 프레임(12)을 포함한다.  상기 시트는 또한, 하부 프레임(12) 내의 상부 프레임(10)을 지지하기 위한 기계적 지지 부재(16)를 포함한다.  상기 지지 부재(16, 116)는 다음과 같이, 즉 시트 참석자의 체중 하에 탄성적으로 변형하도록 구성되어 있다.  이때 참석 감지 시스템은 상기 지지 부재(16)의 탄성 변형을 감지하는 적어도 한 개의 측정 센서(18)를 포함한다.
Patent KR-20010110307-A (KR)
IPC: B01J8/24
Filed: 1999-12-15
Abstract: 본 발명의 일 실시예에 따른 유동층 처리 시스템(10)은 제품 챔버(14), 유체 공급 시스템(16) 및 토출 게이트(12)를 포함한다.  제품 챔버(14)는 개방 상부(20) 및 개방 하부(22)를 갖고, 유동층 처리 시스템(16)은 제품 챔버 내의 제1 유체를 지향하도록 위치 설정된 출구(50)를 갖는다.  유체 공급 시스템(16)의 출구(32)는 제품 챔버의 개방 하부 및 유체 공급 시스템의 출구 주위로 실제 연장되는 토출 개구를 한정하도록, 제품 챔버의 개방 하부(22)로부터 이격된다.  토출 게이트(12)는 토출 개구를 덮는 제1 위치 및, 토출 개구를 노출시키는 제2 위치로 이동 가능하다.
Patent KR-20020004942-A (KR)
IPC: D06M13/428
Filed: 1999-05-11
Abstract: 본 발명은 섬유 제조 과정중 합성 섬유에 용이하게 도포할 수 있는 융점이 낮고, 고형분 함량이 높은 방사 피니시 조성물에 관한 것이다. 상기 방사 피니시 조성물의 약 70 중량% 이상을 구성하는 방사 피니시 고체는 <HLB> 값이 약 2 내지 13 범위이고, 융점이 약 25℃ 내지 약 140℃인 비이온성 탄화수소 계면활성 성분, 예를 들어 폴리옥시알킬렌을 포함한다. 몇몇 구체예에서, 상기 방사 피니시 조성물은 또한 선태된 플루오로케미칼들을 포함한다.
Patent KR-20020000786-A (KR)
IPC: G01F1/84
Filed: 2000-03-15
Abstract: 본 발명은 축소된 플래그 디멘션을 갖춘 코리올리 유량계를 개시한다.  플래그 디멘션은 흐름관 루프가 파이프라인으로부터 외측으로 연장되는 길이이다.  축소된 디멘션을 가지기 위해, 흐름관(103A-103B)의 전체 길이는 유량계 센서(10)가 코리올리 효과에 보다 민감하게 하도록 진동해야 한다.  흐름관의 전체 길이가 진동할 때, 흐름관에 연결된 제 1 세트의 브레이스 바(122-123)는 흐름관(103A-103B) 내의 진동의 주파수를 분리시킨다.  흐름관에 연결된 제 2 세트의 브레이스 바(120-121)는 유량계의 제로 안정성을 향상시킨다.
Patent KR-20020007399-A (KR)
IPC: C25D15/02
Filed: 2001-03-06
Abstract: 비수용성의 무기 또는 유기의 미립분말을 방향족 아조화합물 잔기를 보유하는 아조계면활성제와 아울러 수매체 속에 분산시켜서 금속도금욕에 첨가하고, 전해를 행하여 미립분말과 금속의 복합 도금막으로의 미립분말의 함유량을 높이는 것을 가능하게 한다.
Patent KR-20020005039-A (KR)
Title: 마이크로미터 크기의 무기 입자를 코팅시키는 방법
IPC: C09C3/06
Filed: 2000-05-19
Abstract: 본 발명은 입자 크기가 약 1 내지 100㎛인 무기 입자를 나노미터 크기의 코팅 입자와 혼합시키는 단계, 나노미터 크기의 입자(현재로서는 실리카)를 소성시켜 유연하게 하거나 용용시키는 단계, 무기 입자상에 불투수성 무기 코팅을 형성시키는 단계를 포함하여, 인광물질과 같은 수분에 민감한 무기 입자를 코팅시키는 방법에 관한 것이다.  코팅된 입자는 모든 비코팅된 입자의 제거 목적으로 세척되고, 건조된다.
Patent KR-20020011432-A (KR)
IPC: B24B37/013
Filed: 2000-06-10
Abstract: 테이블상의 중심을 벗어나 위치된 뷰포트를 갖춘 화학/기계적 연마(CMP)시스템용 광말단시스템에서, 상기 뷰포트는 이 뷰포트의 창이 연마패드의 상부와 수평이 될 수 있도록 높이가 조정될 수 있다.
Patent KR-20030061099-A (KR)
Title: Capacitor Of Semiconductor Device And Method Of Fabricating The Same
Inventor: KIM HONG GI
IPC: H01L21/02
Filed: 2002-01-10
Abstract: PURPOSE: A capacitor of a semiconductor device and a method for manufacturing the same are provided to be capable of reducing fabrication cost by using a two-step photolithography process. CONSTITUTION: An interlayer dielectric pattern(150) having a plurality of opening portions(155), is formed at the upper portion of a semiconductor substrate(100). The first lower conductive layer, the second lower conductive layer, and a sacrificial layer are sequentially deposited on the entire surface of the resultant structure. Then, the first lower conductive layer pattern, the second lower conductive layer pattern(175) and a sacrificial layer pattern are formed by entirely etching the resultant structure until the upper surface of the interlayer dielectric pattern is exposed. Then, the sacrificial layer pattern is removed. After forming the first lower electrode(167) by partially etching the first lower conductive layer pattern, a dielectric layer(190) and an upper electrode layer(200) are sequentially deposited on the resultant structure.
Patent KR-20030062065-A (KR)
Title: Method and System for Locating a Lost Article
Inventor: HWANG HYUN KYU
IPC: G08B21/00
Filed: 2002-01-16
Abstract: PURPOSE: A method and a system for searching a lost article are provided to prevent a receiving error of a radio wave by using a signal of a high frequency band. CONSTITUTION: A system for searching a lost article includes a transmitter(100), a wireless base station(104), a mobile communication exchange station(106), a mobile communication service center server(108), and a receiver(112). The transmitter is used when an user selects a lost article. The wireless base station receives a signal from the transmitter and generates the signal having a frequency of a particular band. The mobile communication exchange station is connected to the wireless base station in order to process a connection request of the transmitter. The mobile communication service center server is connected to the mobile communication exchange station. The receiver is adhered to the lost article.
Patent KR-20030064170-A (KR)
Title: Hinge for collapsible ladder
Inventor: LEE CHAN BOK
IPC: E06C7/50
Filed: 2002-01-26
Abstract: PURPOSE: A hinge for a folding ladder is provided to repair and replace simply and to improve durability by preventing abrasion of a rotary plate. CONSTITUTION: The hinge for a folding ladder comprises: an outer frame(110) coupled with two rotary units(111) provided with a joint, a shaft hole(113) and a main hole(114); an inner frame(120) coupled with two rotary units(121) provided with a joint, a shaft hole(123) and a joint hole(124); a shaft tube(130) attached to the shaft holes(113,123) of the inner and outer frames(110,120) and provided with a housing space opened downward; a reciprocating shaft(140) passing through the housing space of the shaft tube(130) vertically; a main pin(160) composed of two stem units(162) and a head unit, and installed on the outside of the outer frame(110); a spring(150) rolled up in the reciprocating shaft(140) in the shaft tube(130); an auxiliary pin(170) installed on the inside of the main pin(160); a grasping piece(180) covering the outside of the main pin(160); a torsion spring(190) for rotating the auxiliary pin(170) elastically on the main pin(160); and a snap ring(200) fixing the auxiliary pin(170), the main pin(160) and the grasping piece(180) of the reciprocating shaft(140).
Patent KR-20030064590-A (KR)
Title: Convergent block floating-point (CBFP) scaling method and devices for pipelined FFT processors
Inventor: LEE SEUNG GI
IPC: G06F17/14
Filed: 2002-01-28
Abstract: PURPOSE: A method and a device for scaling the CBFP(Convergent Block Floating-Point) for a pipelined FFT(Fast Fourier Transform) processor are provided to reduce a chip area and the power consumption, to minimize the increase of the output latency by the CBFP scaling, and to increase the accuracy of the output data. CONSTITUTION: A CBFP scaling process is processed by dividing into a pre-scaling process and a scaling correcting process. The pre-scaling process processes the pre-scaling for the middle result data by obtaining a pre-scaling index for each data in a block, stores the pre-scaling result and the pre-scaling index value of each data in a latency transformer memory of a next operation step, and decides a block scaling index value as the smallest value of the pre-scaling index for each data. As the latency transformer has a scaling correction function, the pre-scaled data is corrected by using a difference between the pre-scaling index and the block scaling index.
Patent KR-20030066002-A (KR)
Title: Hinge device of steering column for vehicle
Inventor: KIM BYEONG GUK
IPC: B62D1/16
Filed: 2002-02-04
Abstract: PURPOSE: A hinge apparatus for a steering column of a vehicle is provided to improve comfortableness and reliability by preventing deformation of the end and increasing the rigidity of a bush with increasing the thickness of an elastic body and forming the protrusion in the middle of the supporting body. CONSTITUTION: A hinge apparatus of a steering column is composed of a bracket(50) installed in the lower part of the steering column, and a bush(60) surrounding by penetrating the bracket. An elastic body(62) is formed in the middle of the bush and made of rubber. Supporting bodies(61) are made of metal, and formed in both ends of the bush. A protrusion(63) is formed in the middle of the supporting body and protruded for the elastic body to improve vertical rigidity, and excessive deformation is prevented by increasing the thickness of the elastic body. Vertical rigidity is improved by restricting the deformation range in moving the protrusion downward against load from the steering column and the driver.
Patent KR-20030066069-A (KR)
Title: Apparatus for displaying of exchange rate/money rate and method thereof
Inventor: LEE SEUNG CHEOL
IPC: G06Q40/04
Filed: 2002-02-04
Abstract: PURPOSE: A device for displaying exchange rate and interest data and a method thereof are provided to display a plurality of exchange rate data related to currencies of many nations by receiving currency related exchange rate data of many wanted nations from a foreign exchange server in branch terminals according to banks in real time and displaying exchange rates according to nations on a display board alternately. CONSTITUTION: Electronic exchange rate display units(160a-160c) include a plurality of exchange rate display boards comprising a nation name display unit and an exchange rate display unit. The electronic exchange rate display units(160a-160c) display a nation name on the nation name display unit, and display a currency of a corresponding nation on the exchange rate display unit. Branch terminals(140a-140c) connect to a foreign exchange server and a main office computer host, receive and store exchange rate data of currencies of various nations, and receive and store a ranking and display time of a nation to be displayed on the display board from a manager. The branch terminals(140a-140c) transmit a nation name and a currency exchange rate of the corresponding nation to the electronic exchange rate display units(160a-160c) sequentially in accordance with a ranking of a nation, and nation names and currency exchange rates of the corresponding nations are displayed on the display board of the electronic exchange rate display units(160a-160c) alternately.
Patent KR-20030069388-A (KR)
Title: A skewer for vegetable or meat and the sticking method therefor
Inventor: KIM JUNG BAE
IPC: A47J37/04
Filed: 2002-02-20
Abstract: PURPOSE: A skewer is provided to conveniently wrap roasted vegetables and meat in lettuce by fixing vegetables and meat to the skewer and roasting the vegetables and meat at once. CONSTITUTION: A skewer(100) is composed of a skewer unit(110), and a streamlined handle unit(120). The skewer unit is formed pointedly, and is made of ceramic for radiating far infrared rays. The handle unit is made of an insulating material, and has a through hole(121).
Patent KR-20030072708-A (KR)
Title: Apparatus and method for deleting noise
Inventor: CHO JAE HUN
IPC: G11B7/085
Filed: 2002-03-06
Abstract: PURPOSE: An apparatus and a method for removing a noise are provided to sense and remove a radial noise from an RF signal, thereby preventing focus drop of a focus servo and a pickup lens of a tracking servo from being stuck in. CONSTITUTION: If an optical disk(200) is played, an RF(Radio Frequency) signal reflected from the optical disk by a pickup(201) is inputted to an RF amplifying and noise processing unit(202). The RF signal output from the pickup is amplified in an RF amplifying unit(202-1) to be inputted to a noise detecting unit(202-2). The noise detecting unit(202-2) detects error signals from the amplified RF signal. A noise removing unit(202-3) removes a radial noise mixed in the error signals. The error signals from which the radial noise is removed are output to a DSP(Digital Signal Processor)(203). The DSP processes the error signals into signals for controlling a servo operation to output a tracking actuator output signal and a focus actuator output signal.
Patent KR-20030077858-A (KR)
Title: Electrolyte for a lithium secondary battery and lithium secondary battery comprising the same
Inventor: KIM JIN SEONG
IPC: H01M10/0525
Filed: 2002-03-27
Abstract: PURPOSE: Provided are an electrolyte for a lithium secondary battery and the lithium secondary battery containing the electrolyte, which prevents swelling, therefore is excellent in lifetime property. CONSTITUTION: The electrolyte for the lithium secondary battery contains a non-aqueous organic solvent, lithium salts, and 0.1-10wt%(based on the electrolyte) of an electrolyte additive(formula 1) such as phenyl vinyl sulfone, chlorophenyl vinyl sulfone, and fluorophenyl vinyl sulfone. In the formula, X is halogen, R1 and R2 are hydrogen or C1-C8 alkyl, and n is an integer of 0-5.
Patent KR-20030079367-A (KR)
Title: A takeup-reel brake apparatus for VCR
Inventor: JUNG JAE HO
IPC: G11B15/22
Filed: 2002-04-03
Abstract: PURPOSE: A device for braking a winding reel of a magnetic record player is provided to prevent the same section of a tape from replaying or being rerecorded by preventing the tape from unwinding when the tape is ejected. CONSTITUTION: A fixed brake(90) is formed with a reel brake(80) to operate with the reel brake by a function plate(60) driven by a loading motor(50). The fixed brake prevents a tape from unwinding from a winding reel when a tape cassette ejects the tape. A cam part(65) is formed at the function plate and a cam follower(86) guided to the cam part is formed at the reel brake. The fixed brake is formed in a direction orthogonal to a longitudinal direction of a frictional member(88) centering on a rotation center pin(92) of the reel brake.
Patent KR-20030083113-A (KR)
Title: A method of culture in vitro of Centella asiatica (L.) Urban whole plant
Inventor: AHN JUN CHEUL
IPC: A01H4/00
Filed: 2002-04-19
Abstract: PURPOSE: Provided is a method for massively culturing a whole plant which have having a great quantity of useful components. CONSTITUTION: A method for culturing a whole plant comprises inserting a whole plant including roots, stalks and leaves into a light permeable vessel; inserting a broth medium into the vessel; and culturing, wherein the vessel is an air-injection type bioreactor or culture bottle; the temperature of the bioreactor is 20 to 30 deg. C; the broth medium comprises at least one component selected from auxin, cytokinin, yeast extract, methyljasmonate and chitosan; the broth medium comprises at least one compound selected from KNO3, NaH2PO4, CaCl2 and MgSO4; the broth medium comprises 2 to 7% sucrose as a carbon source; the broth medium has pH 5 to 8; and the amount of light is 1,000 to 7,000.
Patent KR-20030084491-A (KR)
Title: Unit Pixel with improved fill factor and dark signal property in cmos image sensor
Inventor: LEE WON HO
IPC: H01L27/146
Filed: 2002-04-27
Abstract: PURPOSE: A unit pixel of a CMOS image sensor is provided to improve dark current property by directly connecting a reset transistor to a photodiode and to improve fill factor by using an improved drive transistor. CONSTITUTION: A photodiode(201) senses a light and generates optical carriers. A reset transistor(204) is directly connected to the photodiode(201) so as to improve dark current. A floating diffusion region(203) stores the carrier generated in the photodiode. A transfer transistor(202) is connected between the photodiode and the floating diffusion region. A drive transistor(206) detects an electrical signal from the floating diffusion region. A select transistor(208) is connected to the drive transistor. At this time, a gate and a drain of the drive transistor(206) are connected each other by using butting contact, thereby improving fill factor.
Patent KR-20030085674-A (KR)
Title: periodical push information transfer system and method in wireless network environment
Inventor: CHOI HAN OK
IPC: H04B7/24
Filed: 2002-04-30
Abstract: PURPOSE: A system and method for transmitting periodic push information under a wireless network environment is provided to offer a periodic push service for a specific subscriber group through the communication between a PI(Push Initiator) and a PPG(Push Proxy Gateway). CONSTITUTION: A push message transmission system consists of a PI, a PPG and a user equipment. The PI comprises a TCP/IP-based PSCP(Push Service Control Protocol)(203), a message handler(202) for the parsing of the PSCP(203) and the creation of messages, and a user interface(201) to establish push service request items. The PPG is comprised of a PI information database(205), a subscriber information database(206), a cache database(207), a DBMS(208), a service scheduler(209), a push service application(210) and a wireless protocol(211). The PI information database(205) is for the authentication of the PI. The subscriber information database(206) manages a specific subscriber group as a push service object. The cache database(207) stores received push information. The DBMS(208) is for the operation of databases. The service scheduler(209) processes periodic push information transmission. The push service application(210) manages the push service overall. The wireless protocol(211) is to transmit push information to subscribers in a wireless communication network.