baber/WOPTO huggingface dataset:
Patent KR-20040036006-A (KR)
Title: Stand type illumination apparatus capable for displaying advertisement information
Inventor: LEE NAM HOON
IPC: G09F23/04
Filed: 2002-10-23
Abstract: PURPOSE: A stand illumination apparatus capable of advertisement display is provided to display various kinds of advertisement information. CONSTITUTION: According to the stand illumination apparatus, a receiving recess(14) accommodating a lamp(16) is formed to be projected to the rear from the front of a housing(10), and an electronic component is embedded in the rear and is combined with a support part(40) and is formed with a semi-transparent material. A semi-transparent cover(30) accommodates the receiving recess and is combined with the housing to cover the electronic component. And an advertisement screen unit(20) is intervened between the housing and the cover and records advertisement information and displays an advertisement using a light emitted to the rear from the lamp.
Patent KR-20040037752-A (KR)
Title: adhesive tape for braun tube fixing
Inventor: LEE YONG IN
IPC: H01J29/87
Filed: 2002-10-30
Abstract: PURPOSE: An adhesion tape for fixing a cathode ray tube is provided to improve a viscosity and a tensile strength by forming an adhesive layer with a rubber hot-melt adhesive. CONSTITUTION: An adhesion tape for fixing a cathode ray tube comprises a glass fiber mesh cloth(3) as a base material. A synthetic resin film layer(2) having a release agent layer(1) is formed at a side of the glass fiber mesh cloth. An adhesive layer(4) is formed at the other side of the glass fiber mesh cloth. The glass fiber mesh cloth is a plain weave glass fiber mesh cloth. The adhesive layer is a rubber hot-melt adhesive. The synthetic resin film layer comprises a polyethylene film or a polyester film. The rubber hot-melt adhesive comprises a styrene-isobutylene-styrene 90-110 weight%, a resin 90-110 weight%, or a heat-resisting addition 0.1-0.4 weight%.
Patent KR-20040040191-A (KR)
Title: Swash plate structure for enclosed compressor
Inventor: AHN BYEONG HA
IPC: F04B39/00
Filed: 2002-11-06
Abstract: PURPOSE: A structure of a partition plate for a hermetic compressor is provided to appropriately control a suction flow rate of refrigerant gas according to an operation state of a compressor by forming a discharge interval and a suction interval differently in length. CONSTITUTION: A partition plate is inserted into an inner space of a cylinder having a suction port and a discharge port for partitioning the inner space of the cylinder into at least two or more hermetic spaces. Both sides of the partition plate press-contact with vanes for converting each hermetic space into suction areas and compressing areas in rotating. In both sides of the partition plate, when a top dead center is 0, a bottom dead center is formed within a range of 180 to 360 by the basis of a traveling direction of the vanes to make a suction interval longer than a discharge interval.
Patent KR-20040041470-A (KR)
Title: Massage Tissue for skin control and assistance matter for the same
Inventor: KIM YONG RAE
IPC: D21H17/00
Filed: 2002-11-11
Abstract: PURPOSE: Provided is a skin care massage tissue which makes formation of bubbles, cleans the skin and provides nutrition thereto, while minimizing the skin stimulation. CONSTITUTION: A skin care massage tissue comprises extracts of tocopherol, collagen, squalene, ginseng, cucumber, arbutin, cornflower, aloe, allanton, green tea, ethanol, citric acid, betaine, panthenol, dipropylene glycol, polyquaternium-10, sodium lauroylglutamate, cyclodextrin, phenoxy ethanol, and cocamidopropyl betaine. The extracts are diffused into natural soft pulp paper by 34.45wt.%.
Patent KR-20040042025-A (KR)
Title: Teaching chair of a desk unification form
Inventor: JUNG KWAN YOUNG
IPC: A47C3/00
Filed: 2002-11-12
Abstract: PURPOSE: A study chair with an top plate installed in one body is provided to induce a stable sitting posture by effectively distributing the load applied to the waist region and prevent waist diseases such as scoliosis by a correct sitting posture. CONSTITUTION: A seat supporting bracket(13) is hingeably coupled to the front of a supporting frame(19) supporting a seat portion(10). A front supporting frame(14) includes a horizontal frame(14b) spaced away from the supporting frame(19) by which the seat supporting bracket(13) is supported and a bent supporting portion(14a) bent from the horizontal frame(14b) and contacted to the ground. A knee support(15) with a cushion material(15a) on a sloping section of the front supporting frame(14) is mounted to be height-adjustable. A top plate(17) mounted slopingly by a fixed frame(18) is detachably coupled to the top end of the front supporting frame(14).
Patent KR-20040043570-A (KR)
Title: Air back module for passenger of automobile
Inventor: KONG BYEONG SEOK
IPC: B60R21/20
Filed: 2002-11-19
Abstract: PURPOSE: A passenger airbag module for a vehicle is provided to quickly and simply meet the qualification for shock absorption in an interior fitting rule test by installing a sliding type shock absorbing unit. CONSTITUTION: A passenger airbag module for a vehicle is composed of a gas generator and an airbag body(2) installed in a housing(1), a door body(4) integrally formed at a crash pad(3) and having an inflation groove(5), a chute(6) installed around the inflation groove, a door plate(7) coupled to the door body and having a hinge(8), brackets(9,11) fixing the housing to a cowl cross member(10), and a sliding type shock absorbing unit installed at the brackets.
Patent KR-20040044591-A (KR)
Title: Apparatus and method of weighted round-robin cell scheduling for ATM
Inventor: HAN MAN SU
IPC: H04L12/56
Filed: 2002-11-21
Abstract: PURPOSE: A device for a WRR(Weighted Round-Robin) cell scheduling of an ATM is provided to enable a WRR scheduler to support various weights, and to realize simple hardware, thereby using a little space of a memory. CONSTITUTION: VC(Virtual Connection) queues(151,152) temporarily store plural VC cells having natural numbers(N) as weights. A scheduling weight queue(130) consists of many scheduling weighted queues(130_0-130_n) having weights of a power of '2' to service the VC queues(151,152) as many as N. A scheduling weighted queue controller(140) selects a scheduling weighted queue in which the VC queues(151,152) having weights of a power of '2' are, and registers the selected scheduling weighted queue. A queue selector selects the scheduling weighted queues as many as N in order of weight.
Patent KR-20030076190-A (KR)
IPC: H01L21/027
Filed: 2002-12-02
Abstract: 리소그래피장치내의 광학요소는 상기 요소가 제작되는 온도와 그것이 작동될 평균온도 사이의 온도에서 0교차 CTE를 가진 낮은 CTE 재료를 사용하여 제작된다.
Patent KR-20040049166-A (KR)
Inventor: CHOI GWANG PYO
IPC: H01J11/10
Filed: 2002-12-05
Abstract: PURPOSE: A plasma display panel and a multi-display panel are provided to allow for ease of coupling of plasma display panels and prevent a seam between panels. CONSTITUTION: A plasma display panel comprises a first substrate(100-1), a second substrate(100-2), barrier ribs(200,200-1), and a sealing portion(300). The end of the first substrate is extended further than the end of the second substrate. The sealing portion seals the end of the first substrate and the end of the second substrate in a diagonal direction. The sealing portion contacts the barrier rib(200-1) arranged in the end of the second substrate.
Patent KR-20040049738-A (KR)
Title: Both course food supply system and method for supplier and receiver of internet
Inventor: PARK YONG SIK
Filed: 2002-12-07
Abstract: PURPOSE: A bidirectional customized food supply system between a supplier and a customer using the Internet and a method thereof are provided to receive the food fit to an appetite from a selected cook by making many and unspecified persons register the best prepare food to an operator site and making the supplier selected from the customer cook/supply the food fit to a required condition of the customer. CONSTITUTION: An operator web server(1) transmits/receives data with an Internet user PC(10). A temporary member database(2) stores the personal information of a food supplier. A customer member database(3) stores the personal information of a food demander or customer member. A detail member service database(3-1) manages the preferred food of the customer member by storing the order particulars of the customer. A region database(4) stores/manages the temporary member and the customer member by each region. An expert consultation organization database(7) evaluates/judges the food after eating the food supplied from the temporary member. A regular member database(8) stores/manages the temporary member receiving an agreement judgment from the customer member and the expert consultant organization.
Patent KR-20040051660-A (KR)
Inventor: AN JEONG OH
IPC: C02F1/46
Filed: 2002-12-11
Abstract: PURPOSE: Provided is an apparatus for generating silver colloid from general water from general water without using additional distiller or water purifier. CONSTITUTION: The apparatus comprises a heating unit(50) with a heater and a temperature sensor at a lower part thereof for heating general water to generate water steam; a distilled water generation unit(100) with a cooling pipe(60) around which cooling pins are provided and through which the steam passes, a motor and a blower, for cooling the steam while the steam passes through the cooling pipe(60), thereby generating distilled water; a silver colloidal liquid generation unit(200) with a fresh water tank for storing distilled water generated by the distilled water generation unit(100), and an upper and a lower silver plates provided in the fresh water tank for generating silver colloid when D.C power is applied to the upper and lower silver plates; a controller(130) for controlling power off of the heating unit(50) when water is run out or abnormal temperature is detected, operation of the motor, and on/off of the D.C power applied to the silver plates; and a power supply(30).
Patent KR-20040054446-A (KR)
Title: Patch Cord Type Fixed Optical Attenuator manufacture that use Cladding Mode Suppression type of Metal-Ion Doped Optical Attenuation Fiber
Inventor: BAE JAE HUN
IPC: G02B6/00
Filed: 2002-12-18
Abstract: PURPOSE: A method for fabricating a patch cord type fixed optical attenuator using a cladding mode suppression type metal ion-doped optical attenuation fiber is provided to improve the wavelength dependent loss by using a structure of cladding mode suppression. CONSTITUTION: A fixing optical attenuator is formed by performing a fusion splicing process for a general cladding mode suppression type special optical attenuation fiber of a dense wavelength division multiplex system and an SMF-28. In the fusion slicing process for the SMF-28, the fixing optical attenuator is formed by performing the fusion slicing process of the SMF-28 on both ends of the cladding mode suppression type special optical attenuation fiber. The housing of the fixing optical attenuator is formed with a type of patch cord or an in-line type.
Patent KR-20040057020-A (KR)
Title: Multi - Purpose Hydraulic Diminisher
Inventor: KWAK HUI DOK
IPC: B30B9/32
Filed: 2002-12-24
Abstract: PURPOSE: A multipurpose hydraulic compressor is provided to compress various objects by using a hopper as an auxiliary compressing chamber and a door as an auxiliary compressing unit. CONSTITUTION: A multipurpose hydraulic compressor is composed of a hopper(20), and a door(30) rotated by a hydraulic cylinder(50'). The hopper is used as an auxiliary compressing chamber. The door is used as an auxiliary compressing unit.
Patent KR-20040060489-A (KR)
Title: Method for forming transistor
Inventor: BANG GI WAN
IPC: H01L21/336
Filed: 2002-12-30
Abstract: PURPOSE: A method of forming a transistor is provided to increase easily gate depletion ratio and to improve properties of the transistor by performing extra ion-implantation on the only gate using a remaining oxide layer as a barrier without an additional mask process. CONSTITUTION: A gate(35) is formed on a semiconductor substrate(31) with an isolation layer(32). A TEOS(Tetra-Ethyl-Ortho-Silicate) oxide layer(36) is deposited on the entire surface of the resultant structure and LDD(Lightly Doped Drain) ion-implantation is performed. A nitride layer(38) and an oxide layer are sequentially deposited on the TEOS oxide layer. The nitride layer is partially exposed by performing CMP(Chemical Mechanical Polishing) on the oxide layer. At this time, a remaining oxide layer(39) is formed at both sides of the gate. Extra ion-implantation(40) is performed only on the gate by using the remaining oxide layer as a barrier.
Patent KR-20040061646-A (KR)
Title: Sound generation apparatus for etiquette in mobile terminal
Inventor: KWON GI SU
IPC: H04B1/40
Filed: 2002-12-31
Abstract: PURPOSE: An apparatus for generating a sound for etiquette in a mobile communication terminal is provided to generate a sound like water flush through a mobile communication terminal in a bathroom, thereby comfortably using the bathroom without wasting water. CONSTITUTION: A driving unit(11) opens and shuts a voice circuit by a push operation of a user. A storing unit(13) stores a control program for generating a sound for etiquette. A control unit(12) controls the control program to be operated for set time. A sound generator(14) drives the control program for generating the sound for etiquette. An amplifying unit(15) amplifies the sound for etiquette into an audio signal. An output unit(16) outputs the amplified audio signal.
Patent KR-20020038674-A (KR)
Title: Hot spot with tailored range for extra frequency to minimize interference
IPC: H04W16/02
Filed: 2000-07-04
Abstract: A method and apparatus for minimizing interference in a wireless communication system. A base transceiver station transmits and receives over a first frequency band and a second frequency band. The maximum range of the first frequency band can be smaller than the maximum range of the second frequency band. Alternatively, the maximum range of the first frequency band can be larger than the maximum range of the second frequency band. Further, the maximum range of the second frequency band can vary based upon factors such as the capacity of the first frequency band and the amount of interference on the first frequency band. A control channel for the second frequency band which is measured for determining whether to handoff from the first frequency band to the second frequency band can be transmitted within the first frequency band.
Patent KR-20020064757-A (KR)
Title: Improved thermal and acoustical insulating shield
IPC: G10K11/168
Filed: 2000-07-14
Abstract: A flexible, adhesively attachable, self-sealing, thermal and acoustical insulating shield has a needled, flexible, fibrous batt having an insulating layer of insulating fibers disposed between opposite binding layers of binding fibers. Binding fibers of each binding layer are needledly disposed through the insulating layer and an opposite binding layer to provide tufts of binding fibers protruding from the opposite binding layer so a to form a tufted upper surface and a tufted lower surface of the batt. A flexible adhesive is disposed and adhered substantially over the upper surface and, preferably, over lower surface of the batt such that the tufts on the upper and lower surfaces are secured to the surfaces by the adhesive. A flexible, protective foil is adjacent to, and preferably permanently adhered by the adhesive to, the lower surface of the batt. The protective foil has edge portions which extend beyond edges of the fibrous batt and the edge portions have a flexible adhesive disposed and adhered substantially over upper edge surfaces of the edge portions. The shield may be flexed and pressed to configure and permanently attach the tufted upper surface to an object to be shielded and the edge portions may be pressed to permanently attach the edge upper surfaces of the edge portions to the object so as to self-seal the edge portions to the object.
Patent KR-20020026552-A (KR)
Title: Heat Treatment and Sand Removal for Castings
IPC: C21D9/00
Filed: 2000-07-27
Abstract: A system and method for heat treating castings (13, 53) and removal cores (54) therefrom. The castings (13, 53) are initially located in indexed positions with their x, y, and z coordinates known. The castings (13, 53) are passed through a series of nozzle stations (41, 63) each having a series of nozzles (42, 64, 64') mounted in present positions corresponding to the known indexed positions of the castings passing through the nozzle stations (41, 63). The nozzle (42, 64, 64') apply heated fluids to the castings (13, 53) for heat treating the castings (13, 53) and dislodging the sand cores (54) for removal from the castings (13, 53).
Patent KR-20020055597-A (KR)
IPC: H04L29/08
Filed: 2000-11-20
Abstract: 본 발명은 사용자-운용 유무선 거래 단말기, 즉 상용 PDA를 통하여 동시접속 고객들에게 대화식 멀티미디어-기반 전자구매 서비스를 제공할 수 있는 시스템에 관한 것이다. 상기 시스템은 다수의 컴퓨터-기반 서버 어레이와 다수의 다수-링크 상용 PDA로 구성된다. 본 발명은 또한, 대화식 광고-기반, 대화식 지불-기반 뿐만 아니라 주문형 콘텐츠-기반 전자구매 서비스를 실행하기 위한 다수의 방법들에 관한 것이다. 더구나, 본 발명은 상업적 장소내에서 작업이 중요하고 고도로 유용하며 규모의 확장이 가능한 주문형 대화식 멀티미디어-기반 전자구매 서비스를 전달할 수 있는 다수-링크-기반 작업집단 서버 어레이를 이용하여, 수명부터 수천명에 이르는 다수의 동시접속 고객들을 수용할 수 있다.
Patent KR-20020060987-A (KR)
IPC: A61K31/00
Filed: 2000-12-06
Abstract: 본 발명은 우울증 및 다른 정동적 장애의 치료를 위한, 선택적 세로토닌 재흡수 저해 활성 및 5-HT 2C 길항제, 부분 효현제 또는 역성 효현제 활성을 가지는 화합물의 사용 및 이러한 화합물의 조성물에 관한 것이다.  조합된 세로토닌 재흡수 저해 효과와 5-HT 2C 길항제, 부분 효현제 또는 역성 효현제 효과는 동일한 화학적 화합물, 또는 2개의 상이한 화학적 화합물에 존재할 수 있다.
Patent KR-20020073164-A (KR)
IPC: C07C51/36
Filed: 2001-01-12
Abstract: 4-시아노사이클로헥사온(D)를 시아노하이드린 동족체화하면 4-시아노사이클로헥산산(I)를 얻을 수 있다. 
     [화학식 D] 
     
       
     
     [화학식 I]
Patent KR-20020075397-A (KR)
Title: 채널 기반 인터넷 네트워크 및 이것의 확립 방법
IPC: H04N7/173
Filed: 2001-01-25
Abstract: 채널 기반 네트워크는 시스템 서버(110), 하나 이상의 인터넷 사이트(120) 및 하나 이상의 사용자 단말(130)을 포함한다.  시스템 서버(110)는 각각의 채널 번호가 관련된 인터넷 주소 및 관련된 인터넷 사이트 이름을 갖는 채널 번호들의 리스트를 포함하는 마스터 채널 테이블을 저장한다.  네트워크의 각각의 인터넷 사이트는 상기 마스터 채널 테이블에 저장된 관련 인터넷 주소에 의해 번지 지정 가능하다.  각각의 사용자 단말은 자동으로(즉, 사용자의 관여 없이) 상기 마스터 채널 테이블의 로컬 카피를 다운로드하여 저장한다.  상기 채널 번호 및 관련 인터넷 사이트 이름은 채널 테이블의 다운로드된 로컬 카피로부터 판독되어, 예를 들어 메뉴와 같은 방식으로 텔레비전 상에 표시된다.  사용자는 표시된 메뉴로부터 인터넷 사이트 이름을 선택하고, 상기 선택된 인터넷 사이트 이름과 관련된 채널 이름을 텔레비전 원격 조정기와 같은 입력 장치를 사용하여 입력한다.  그러면 사용자 단말은 입력된 채널 번호와 관련된 인터넷 주소를 판독하고, 상기 인터넷 주소를 인터넷 상에 전송함으로써 선택된 인터넷 사이트에 접속한다.
Patent KR-20020081288-A (KR)
Title: 공기 - 수소 전지
IPC: H01M4/62
Filed: 2001-08-16
Abstract: 본 발명은 고 에너지 밀도와 함께 사이클 특성이 양호한 공기 - 수소 전지를 제공한다. 
     공기극으로 이루어지는 양극과, 수소 흡장 합금을 갖는 음극과, 상기 양극과 상기 음극 사이에 전해질로서 양이온 교환막 또는 음이온 교환막을 갖는 공기 - 수소 전지에 있어서, 상기 음극의 수소 흡장 합금의 주위를 음이온 교환 수지로 피복함으로써, 전해질로서의 기능을 갖는 음이온 교환 수지와 수소 흡장 합금의 접촉면적을 증가시켜, 수소 흡장 합금의 이용율 및 내식성을 향상시킨다.
Patent KR-20030032915-A (KR)
IPC: C07H21/00
Filed: 2001-01-30
Abstract: 올리고뉴클레오티드는 하나 이상의 탈염기 부위를 갖는 1종 이상의 올리고뉴클레오티드로 오염된, 탈염기 부위의 알데히드 잔기에서 이민의 형성 및 추출, 침전 또는 크로마토그래피에 기초한 분리에 의하여, 올리고뉴클레오티드 및 그의 유사체를 정제하는데 유용한 방법 및 화합물을 제공한다.
Patent KR-20030051421-A (KR)
IPC: G02B7/02
Filed: 2001-03-28
Abstract: 렌즈(L3)의 광축 방향 중앙 위치의 외주부의 적어도 일부에 플랜지부(80)가 설치되고, 그 플랜지부(80)가 클램프 부재(52a, 52b, 52c)에 의해 눌린 상태로, 렌즈(L3)가 클램프 부재(52a∼52c)와 렌즈 유지 금속물(25)에 의해 유지된다. 플랜지부(80)가 설치된 위치는 렌즈(L3)의 휨에 의한 압축 왜곡 및 인장 왜곡이 모두 생기지 않고, 렌즈(L3)의 광학면에서의 거리가 가장 먼 면인 중립면의 주연 부분으로 되어 있다. 즉, 플랜지부(80)에 작용하는 클램프력이 렌즈(L3)의 다른 부분에 미치는 영향이 최대한 억제되며, 또한 플랜지부(80)에 작용하는 힘에 기인하는 광학면 변형을 최소로 할 수 있다. 따라서, 렌즈의 광학 성능의 악화를 최대한 억제할 수 있게 된다.
Patent KR-20030017553-A (KR)
Title: Zeolite support loaded with a base material for use in the coupling of aniline and nitrobenzene
IPC: C07C209/38
Filed: 2001-06-20
Abstract: This invention provides a composition suitable for use in a reaction zone where aniline is reacted with nitrobenzene to obtain intermediates of 4-aminodiphenylamine comprising a solid support having interior channels with base material employed in the reaction loaded into the channels. The cross-sectional dimensions of the channels are such as to provide a restricted transition state with regard to the reaction and to improve the selectivity of the reaction in favor of the intermediates. The invention also provides a method for loading the base material in the solid support. The invention further provides a process for carrying out the above reaction using the above composition.
Patent KR-20040072090-A (KR)
Inventor: CHUN DU HWAN
IPC: H04N7/18
Filed: 2003-02-08
Abstract: PURPOSE: An easy-to-install monitoring system is provided to connect a monitoring camera with a monitor by an RJ-45 cable without installing another cable for receiving power in the monitoring camera, so that an amateur user easily installs the system without considering a position of an AC power. CONSTITUTION: Monitoring cameras(110-140) input video signals and voice signals, and apply the inputted signals to a monitor(200). The monitor(200) processes the video signals and the voice signals, and displays the processed signals on a screen through a speaker. A remote control device(300) remotely controls the monitor(200), so that the monitor(200) controls zoom, focus, iris, pan, and tilt functions of the cameras(110-140) connected by an RJ-45 cable.
Patent KR-20040073669-A (KR)
Inventor: BAEK BAE HYEON
IPC: C08K3/34
Filed: 2003-02-14
Abstract: PURPOSE: A polyamide resin composition and polyamide film produced therefrom are provided to improve gas barrier properties when used as a film, due to its increased amount of phyllosilicates and improved dispersibility. CONSTITUTION: The polyamide resin composition comprising 1-5wt% of phyllosilicates satisfies the following inequality of 1.5<=A/B<=5.0, wherein A is a gradient showing the decrease in melt viscosity upon the increase in shear strain within the shear rate range of 200-1200/s; and B is a gradient showing the decrease in melt viscosity of other polyamide resin composition having the equivalent relative viscosity but containing no phyllosilicates.
Patent KR-20040073697-A (KR)
Inventor: PARK HYEON IL
IPC: C03C25/42
Filed: 2003-02-14
Abstract: PURPOSE: Provided are a size composition for glass fiber which decreases the number of cutting filament or fine fluff when manufacturing a glass fiber-reinforced plastic, and can provide higher strength of molded structure, and a glass fiber coated with the composition. CONSTITUTION: The size composition comprises 0.1-15 wt% of film-forming agent comprising bisphenolic polyester emulsion, epoxyester emulsion, and epoxy emulsion, 0.01-2.0 wt% of at least one binder selected from the group consisting of gamma-methacryloxypropyltrimethoxysilane, gamma-glycidoxypropyltrimethoxysilane, and gamma-aminopropyltriethoxysilane, 0.2-0.7 wt% of nonionic lubricant, 0.005-0.15 wt% of cationic lubricant, 0.1-0.5 wt% of anionic lubricant, 0.03-0.2 wt% of acid, and the rest of water(the wt% is based on 100 wt% of total size composition).
Patent KR-20040057028-A (KR)
Inventor: JANG GYEONG HUI
IPC: H04B1/711
Filed: 2003-02-17
Abstract: PURPOSE: A hybrid multiuser interference cancellation method using a dynamic programming-based grouping technique and an apparatus therefor are provided to prevent the deterioration of detection performance due to a signal power difference by forming at least a group so that each of the received user signal power differences can be minimized. CONSTITUTION: A hybrid multiuser interference cancellation apparatus(300) comprises a channel estimator(301), a sorting part(302), a cluster calculator(303), and a hybrid interference canceller(304). The channel estimator(301) discriminates use signals from a plurality of signals received from the external and calculates the power of each of the discriminated user signals. The sorting part(302) arranges the calculated user signal power in the order of a descending series. The cluster calculator(303) forms more than a group through a dynamic programming-based grouping technique using the sequential numbers based on the arranged user signal power.