baber/WOPTO huggingface dataset:
Patent KR-20070090567-A (KR)
Title: Cleaning method of processing chamber in semiconductor device manufacturing apparatus
Inventor: KIM KYUNG TAE
IPC: H01L21/304
Filed: 2006-03-03
Abstract: A method for cleaning a process chamber in semiconductor device fabricating equipment is provided to prevent generation of particles in a process gas injection hole by injecting fluorine gas while injecting inert gas through the process gas injection hole. A wafer having undergone a thin film deposition process is taken out from a process chamber(204). Cleaning gas is injected to the inside of the process chamber to eliminate the contaminants in the process chamber while inert gas is injected into the process gas injection hole to prevent the cleaning gas from being introduced into the process gas injection hole through which process gas for depositing a thin film is injected(206). The injected process gas for a thin film deposition process can be SiH4, NH3 or O2.
Patent KR-20060103123-A (KR)
Inventor: NOMURA TOMOHIRO
IPC: H05K1/02
Filed: 2006-03-21
Abstract: 내부 리드와 외부 리드를 포함하는 배선을 형성하는 배선층은 가요성 기판 상에 형성된다.  그 다음, 반도체 칩이 접속되는 내부 리드 강화 전극은 내부 리드에 형성되고, 외부 리드 강화 전극은 외부 리드 상에 형성되며, 배선 강화부는 배선층 상의 내부 리드와 외부 리드 사이에 형성된다.  가요성 기판은 배선 강화부가 내부 리드와 외부 리드 사이에 설치되는 부분을 접어서 전자 장치상에 탑재된다. 
       
     내부 리드, 외부 리드, 레지스트 막, 배선층
Patent KR-20070096560-A (KR)
Title: Measuring system of ram housing position
Inventor: LEE SEE YOUNG
IPC: E02D7/06
Filed: 2006-03-27
Abstract: An apparatus for measuring a displacement of a ram housing is provided to obtain a precise measurement and recording result by preventing data from being unnecessarily mixed. A measurement apparatus of a ram housing comprises a pipe detecting device including an automatic reel(11), a measuring wire(12) for measuring a displacement of the ram housing and a detecting sensor(13). The detecting sensor(13) detects the winding degree of the measuring wire based on a predetermined length corresponding to a rotation of the automatic reel. If a penetration depth of a pile is larger than a bouncing length of the pile, the measuring wire is released from the automatic reel and the detecting sensor represents a negative value.
Patent KR-20070097606-A (KR)
Title: Method and system for automatically controlling power
Inventor: NAM CHA HEE
IPC: H04N5/63
Filed: 2006-03-28
Abstract: A method and a system for automatically controlling power are provided to perform a reservation recording function by automatically turning on the power when the power of the system is abnormally turned off. An I/O controller(24) receives and outputs a power on/off command by a power input command of a user, or senses main power and judges whether the power is abnormally turned off. A power unit(23) supplies operating power to respective parts of a system, and supplies standby power to a user interface unit(22). The I/O controller controls the power unit, and automatically turns on the power of the system when the power is abnormally turned off.
Patent KR-20060070495-A (KR)
Inventor: CHANG YO SEPH
IPC: H04N7/18
Filed: 2006-04-05
Abstract: 본 발명은 렌즈조립체인 카메라렌즈와, 상기 카메라렌즈가 장착되는 경통부재와, 상기 카메라렌즈로부터의 광신호를 받아 신호처리하는 촬상소자 및 PCB 구성의 신호처리부를 포함하여 이루어지는 감시카메라에 있어서; 상측단부에 외나사산을 형성한 외경확대부를 가지며 원통몸체의 외면에 고정홈을 형성시킨 경통부재와; 상기 경통부재의 외경확대부에 하부가 나사 결합되게 하고 상단면에 내측방향으로 돌출된 걸림턱을 가지며 하부를 외측방향으로 연장 돌출시켜 단턱지게 하고 상부 외면에 외나사산을 형성시킨 링타입의 선두렌즈 결합용 고정부재와; 상기 경통부재 및 신호처리부에 체결되며 이들을 감싸 지지하게 한 홀더와; 상기 고정부재와의 나사결합을 위한 내나사산을 상측단부에 형성하고 하측부에도 내나사산을 형성시킨 외형케이스와; 상기 외형케이스의 내측에서 나사 결합되게 하며 외주면에 요홈 및 하측면 중심부에 다단구조의 안착홈을 구비하고 최하측단의 안착홈에 내나사산을 형성시킨 중공몸체의 제1체결부재와; 상기 제1체결부재의 내나사산을 갖는 안착홈에 나사 결합되며 상기 신호처리부측 연결되는 입출력연결단자를 가압 지지하게 되는 링타입의 제2체결부재와; 상기 고정부재의 단턱부분과 상기 제1체결부재의 요홈 상에 각각 배치시킨 고무링을 포함하여 방수방습구조를 형성되게 하는 것을 그 기술적 구성상의 특징으로 한다.
Patent KR-20070073555-A (KR)
Title: Apparatus and method for reserving communication medium
Inventor: KWON CHANG YEUL
IPC: H04L12/28
Filed: 2006-04-11
Abstract: An apparatus and a method for reserving communication media are provided to increase the efficiency of channel use by dividing a channel into a plurality of subchannels and making a separate reservation for a communication medium allocated to each of the subchannels. An apparatus for reserving communication media comprises the first PHY(PHYsical) unit(550) and the second PHY unit(560). The first PHY unit(550) transmits a frame through the first communication medium in order to reserve a communication medium for one among many channels. The first PHY unit(550) comprises the first baseband processor(551), the first RF unit(552), and the first antenna(553). The first baseband processor(551) creates the frame. The first RF unit(552) converts the frame into an RF signal. The first antenna(553) transmits the RF signal. Also, the first PHY unit(550) reserves a communication medium which transmits and receives control frames through the first communication medium. The second PHY unit(560) transmits certain data through the second communication medium reserved by the frame transmitted from the first PHY unit(550).
Patent KR-20060059930-A (KR)
Inventor: YOU YEN SIL
IPC: A61K8/97
Filed: 2006-04-27
Abstract: 본 기능성 마사지 팩은 화학성분을 전혀 첨가하지 아니하고, 어성초에 함유되어 있는 강력한 살균력 데카노일 아세트알데히트(decarnoy-acetaldehyde)이라는 물질을 이용하여 마사지 팩을 조제하게 되며, 이 데카노일 아세트알데히트성분은 각종 화농증이나 피부질환에 유효하여, 주로 내, 외 약리 작용으로 알려져 있고, 항생성분과 설파민이 많은 순수한 천연 식물에서 채취한다. 이러한 성분을 어성초에서 추출해서 개발한 피부관리용 마사지 팩이다. 이 식물은 우리나라와 중국, 일본 등지에서 생산되는 식물로서 일반 건강 보조식품으로 개발돼서 음용해 오면서 유통되어 왔으나 최근 이 성분을 분석 발표한 일본인 고스게다쿠오(小管卓夫)박사팀에 의해 항균작용을 나타낸다는 것을 증명하였으며, 설파제보다 4만배나 있는 강한 살균력이 있다고 알려져 있는 어성초와 비타민 C 가 많은 녹차 잎을 혼합 가공하여 기능성 마사지를 할 수 있는 피부 관리제로 개발 한 것이다. 
     본 발명을 실현하기 위해 어성초 생초의 잎과 줄기를 채취해서 깨끗이 세척하고 물기를 제거하고, 비타민 C의 보고인 녹차 잎을 체취해서 깨끗이 세척하고 물기를 제거한 녹차 잎을 어성초의 잎과 줄기를 적당한 비율에 의해 잘 섞어지게 혼합한 뒤 이를 잘게 분쇄하여 강한 추출기(유압식 프레스)에 의해 기름을 짜듯이 압력을 가해 농축액을 뽑아내어 아무 첨가제 없이 순수한 이 농축액을 섭씨 약 15도의 저온에서 약 15일에서 20일간 발효시키는 단계에 의해 그 농축액을 생성하게 된다. 
     간단히 설명하면, 어성초 잎과 녹차 잎을 분쇄해서 프레스에 의해 농축액을 조성하여 발효시키는 것이다. 
     또한 이 농축발효액에 쌀을 깨끗이 세척하여, 건조시킨 후 열을 가해서 볶지 아니하고 그대로 미세하게 분쇄해서 어성초와 녹차의 농축액에 적당한 비율에 의해서 배합하여 마사지 팩으로 사용하게 된다. 
     본 발명으로 인하여 여러 가지 의술로 치료하지 못한 여드름이나 기미 주근깨를 본 농축액의 마사지 팩으로 충분히 관리할 수 있으며, 천연 식물성 치료제이므로 전혀 부작용이 없음을 입증된바 있다. 그리고 본 발명의 농축액은 [표1]과 [표2]와 같이 피부 미용에 탁월한 효과를 기대할 수 있다. 본 발효액은 사람이 마셔도 부작용이 없으며, 기타 인간의 비부에 나타난 곰팡이균이나 세균성 질환을 제거할 수 있는 효과를 얻을 수 있다. 
     
     기능성 마사지 팩 제조방법	어성초와 녹차의 혼합 농축발효액에 쌀가루 배합한 물질
Patent KR-20060060642-A (KR)
Inventor: BURFORD DWIGHT A
IPC: B23K20/12
Filed: 2006-05-03
Abstract: 마찰교반용접 작업을 행하기 위한 시스템, 연관된 마찰교반용접(FSW) 어셈블리, 콘트롤러 및 방법이 제공된다. 상기 마찰교반용접 시스템은 FSW 공구를 공작물에 대하여 이동시킬 수 있는 엑츄에이터를 포함하는, CNC 머신과 같은 FSW 장치를 포함한다. 또한, 상기 시스템은 상기 엑츄에이터를 구동하여 FSW 공구를 이동시키기 위하여 상기 FSW 장치를 제어할 수 있는 콘트롤러를 포함한다. 이 점에서, 상기 엑츄에이터는 상기 FSW 공구가 상기 공작물에 마찰교반용접 작업을 행할 수 있도록 구동될 수 있다. 상기 콘트롤러는 상기 엑츄에이터의 토크를 모니터링하여, 상기 토크가 토크 설정에 대한 범위 내에 유지되도록 상기 엑츄에이터를 구동하기 위하여 상기 FSW 장치를 제어할 수 있다.
Patent KR-20070006552-A (KR)
Title: Organic light emitting display device, and manufacturing method thereof
Inventor: FISCHER JOERG
IPC: H05B33/26
Filed: 2006-05-09
Abstract: An organic light emitting display device and a method for manufacturing the same are provided to attach a first board to a second board by interposing an anisotropic conductive material between the boards and pressing the conductive material to connect a contact and a second electrode. A first board(100) having an organic light display emitting device is prepared, and a second board(200) having an organic thin film transistor(220) is prepared. A contact(300) is formed on at least one of the first and second boards. The first and second boards are adhered to each other so that the first board is electrically connected to the second board by a contact. In the step of preparing the first board, a first electrode is formed on a first substrate(110), an organic film having a light emitting layer is formed on the first electrode, and then, a second electrode is formed on the organic film.
Patent KR-20070110630-A (KR)
Title: Soundproof interfloor structure for apartment house
Inventor: NA SEUNG CHEUL
IPC: E04F15/20
Filed: 2006-05-15
Abstract: An interlayer noise shut off structure of an apartment house is provided to insulate light and heavy weight vibration effectively, and to prevent the noise from being transferred to the lower layer through a bottom slab by placing a sound absorbing unit and a particle shaped foaming agent. An interlayer noise shut off structure of an apartment house comprises a sound absorbing unit(20), a connecting unit(30), a particle shaped foaming agent(80), a screw members(50), and rubber members(60). The sound absorbing unit is made of light weight cement-concrete, light weight bubble concrete, or a ceramic plate material. The connecting unit is inserted in through holes(21) and formed with a predetermined gap between plate parts(32) integrated with rod parts(31) to form a support plate. The particle shaped foaming agent is filled between the sound absorbing unit and the sleeve. The screw members have end protrusions(52) formed to rear ends of the rod parts, and integrated with fixed support plates. The end protrusions of the screw members are inserted in the rubber members.
Patent KR-20060120449-A (KR)
Title: Matching circuit
Inventor: FUKUDA ATSUSHI
IPC: H04B1/44
Filed: 2006-05-18
Abstract: A matching circuit is provided to allow the second matching block to consist of a lumped parameter element, thus the size of the matching circuit is more miniaturized than an existing matching circuit consisting of a distributed parameter element. One end of the first matching block(2) is connected to the first terminal which is connected with an element whose impedance has a frequency characteristic. More than one of the second matching blocks(3) consists of a lumped parameter element, and is connected to the first matching block(2) in serial. More than one of switch elements(4,5) is equipped. More than one of mismatching blocks(6,7) is connected to the second matching blocks(3) through the switch elements.
Patent KR-20060120455-A (KR)
Title: Liquid-crystalline medium
Inventor: KLASEN MEMMER MELANIE
IPC: C09K19/12
Filed: 2006-05-18
Abstract: Provided is a liquid crystal medium, which is useful for a matrix liquid crystal display device, has a very high specific resistance value, is based on ECB or IPS effect, and ensures a mobile phone or navigation system operatable at a very high or low temperature. The liquid crystal medium based on a mixture of polar compounds comprises at least one compound represented by the following formula 1. In the formula 1, each of R11 and R12 independently represents H, a substituted or non-substituted C15 or lower alkyl or alkenyl radical optionally having a linking group; ring A represents (a) 1,4-cyclohexenylene or 1,4-cyclohexylene radical (wherein one or two non-adjacent CH2 groups may be substituted with -O- or -S-), (b) 1,4-phenylene radical (wherein one or two CH groups may be substituted with N), or (c) a radical selected from the group consisting of piperidine-1,4-diyl, 1,4-bicyclo[2.2.2]octylene, naphthalene-2,6-diyl, decahydronaphthalene-2,6-diyl, 1,2,3,4-tetrahydronaphthalene-2,6-diyl, phenanthrene-2,7-diyl and fluorene-2,7-diyl (wherein the radicals (a)-(c) may be substituted with halogen atoms); and each of L1-L6 independently represents H or F, with the proviso that at least two of L1-L6 represent F.
Patent KR-20070113037-A (KR)
Title: Efficient dual frame buffer control device and the same method
Inventor: MOON SANG AH
IPC: G06F3/14
Filed: 2006-05-24
Abstract: An efficient dual frame buffer control device and a method thereof are provided to the latest vide data(frame data) generated from an image sensor by using a dual frame buffer without abandoning the video data. First and second buffers(225,230) selectively records previous frame data. A record buffer controller(220) generates a buffer state check signal if the frame data is inputted. A read buffer controller(240) reads the previous frame data recorded in one of the first and second buffers. If the buffer state check signal is inputted, a frame controller(245) calculates a remained read time of the read previous frame data. After that, the calculated read time is compared with an expectation time to decide whether the frame data can be recorded or not and decide a buffer which will store the data.
Patent KR-20070059852-A (KR)
Title: Apparatus and method for making broadcast stream data into internet protocol packet
Inventor: PARK WAN KI
IPC: H04L5/00
Filed: 2006-05-30
Abstract: An IP(Internet Protocol) packetizing apparatus for broadcast stream data and a method thereof are provided to receive broadcast streams from a plurality of tuners by performing interfacing with the processing part of an existing home server, acquiring broadcast streams, executing IP packetization, and distributing and broadcasting them to each room. An IP packetizing apparatus for broadcast stream data comprises a broadcast receiving tuner part(400), a processing part(100), an interface conversion FPGA(Field Programmable Gate Array) part(300), and a PCI(Peripheral Component Interconnect) bus/local bus conversion part(200). The broadcast receiving tuner part(400), composed of a plurality of tuners(410-430), receives broadcast streams from a plurality of broadcasting channels. The processing part(100) executes IP packetization for the broadcast streams received from the broadcast receiving tuner part(400), and outputs tuner control signals for channel selection in a plurality of channels(410-430). The interface conversion FPGA part(300) executes control so that an associated processing part can receive the broadcast streams, received from the broadcast receiving tuner part(400), according to a tuner channel control message. The PCI bus/local bus conversion part(200) provides interfacing between the processing part(100) having only a PCI interface and the broadcast receiving tuner part(400) supporting only an SPI(Synchronous Parallel Interface) and an I2C(Inter-Integrated Circuit) interface.
Patent KR-20070115495-A (KR)
Title: Urinary flow rate measuring method and system for thereof
Inventor: KIM KUNG AH
IPC: A61B5/20
Filed: 2006-06-02
Abstract: A method for measuring a urinary flow rate and a system thereof are provided to obtain an effective and efficient urinary flow signal by not using a special funnel used to prevent an impact noise. A method for measuring a urinary flow rate includes the steps of: transmitting pressure of urine(113) accumulated in a container(100) to an outside of a pressure sensor(116) through a pressure transmission pipe(115); generating an electric signal as a voltage signal corresponding to a capacity signal in the pressure sensor; amplifying the electric signal through a bridge amplifier in the pressure sensor; changing the amplified analog signal into a digital signal; and deriving the urinary flow signal by a mathematical differentiation after changing the transmitted water pressure signal into a volume signal by interfacing the digital signal with an analyzing device.
Patent KR-20070078683-A (KR)
Title: Radio communication system
Inventor: ODE TAKAYOSHI
IPC: H04W52/32
Filed: 2006-06-19
Abstract: A wireless communication system is provided to improve PAE(Power-Added Efficiency) of an amplifier by setting an operation point high without the distortion of output of the amplifier. A wireless communication system includes a plurality of wireless channels. Each of the plurality of wireless channels is composed of a control channel and a data channel. The plurality of wireless channels is divided to a frequency direction, and is mapped in a wireless frame format. A control signal position of the control signal is controlled in the wireless frame format for each user or service. Among a plurality of wireless frame formats with different control signal positions, the wireless frame format to be used is selected when setting connection.
Patent KR-20070121163-A (KR)
Title: Multi-color display device and driving method thereof
Inventor: PARK KYONG TAE
IPC: G09G5/06
Filed: 2006-06-21
Abstract: A multi-color display device and a driving method of the same are provided to generate four output image signals from three input image signals by using a lookup table without performing a gamma-degamma converting process. A plurality of pixels are formed to displaying a first color, a second color, a third color and a fourth color. A signal processing unit converts three input image signals having gray scales to four output image signals for displaying the first, second, third, and fourth colors on the basis of a lookup table without a gamma-converting process. A data driving unit generates data voltage on the basis of the output image signal and supplies the data voltage to the pixels. The output image signal for displaying four colors is extracted directly from one of the image signal irrespective of the image lookup table.
Patent KR-20080001354-A (KR)
Title: Case having sliding connection type
Inventor: LA KOANG KYUN
IPC: H05K5/02
Filed: 2006-06-29
Abstract: A case having sliding connection type is provided to improve the rate of interception of electromagnetic waves by inserting an insertion unit into a guide unit to improve sealing of the connection part between front and rear cases. A case having sliding connection type includes a front case(20) and a rear case(30). The front case has a pair of guide units(21), and a plurality of bosses(25) at the rear surface. The rear case has a pair of insertion units(31) inserted into the guide units, and a plurality of coupling holes(35) corresponding to the bosses. The rear case is coupled with the front case by sliding the insertion units to the guide units. Screws(40) pass through the coupling holes and are coupled with the bosses.
Patent KR-20080009398-A (KR)
Title: Air conditioner type heat pump
Inventor: WANG YOON HO
IPC: F25B30/02
Filed: 2006-07-24
Abstract: An air conditioner type heat pump is provided to increase a temperature of cooling water introduced into an engine directly after starting the engine, execute auxiliary heating when the temperature of the cooling water in a heater core does not reach a necessary temperature, and prevent reduction of blowoff force of cold air and hot air in cooling and heating modes. A compressor(100) compresses and discharges a sucked refrigerant. A heater core(650) is installed in an air conditioning duct(610) for passing through cooling water going by way of an engine. A heating indoor heat exchanger(200) is installed at an upper stream of the heater core and heats air while cooling a refrigerant of high temperature and high pressure discharged from the compressor. A temperature control door(651) passes air passing through the heating indoor heat exchanger through the heater core or makes a detour around the heater core. An outdoor heat exchanger(300) cools a refrigerant of high temperature and high pressure discharged from the compressor. A first direction change valve(400) converts a flow direction of the refrigerant discharged from the compressor into one of the heating indoor heat exchanger and the outdoor heat exchanger. A throttle element(500) throttles a refrigerant discharged from the heating indoor heat exchanger. A cooling indoor heat exchanger(600) is arranged at an upper stream of the heating indoor heat exchanger for evaporating a refrigerant. A bypass door(210) passes air passing through the cooling indoor heat exchanger through the heating indoor heat exchanger or makes a detour around the heating indoor heat exchanger. An accumulator(700) sends only gaseous refrigerant among refrigerant discharged from the cooling indoor heat exchanger to the compressor. A second direction change valve(800) converts a flow direction of the refrigerant discharged from the throttle element into one of the outdoor heat exchanger and the cooling indoor heat exchanger.
Patent KR-20080011895-A (KR)
Title: Backlight unit and liquid crystal display comprising the same
Inventor: LEE SANG GIL
IPC: G02F1/13357
Filed: 2006-08-01
Abstract: A backlight unit and an LCD comprising the same are provided to reduce the distortion of color, decrease the thickness of the backlight unit, and achieve the uniformity of brightness. A light source unit is divided into a plurality of light source regions(111-114) each having point light sources(120). A plurality of light source drivers(131-134) supply electric power to the light source regions, respectively. Temperature sensors(151-154) sense the temperatures of the light source regions. Light source controllers(141-144) control the light source so that the color coordinate of each point light source has a predetermined reference value based on the sensed temperatures. The light source, the light source drivers, and the light source controllers are mounted on a point light source circuit board.
Patent KR-20080012568-A (KR)
Title: Water softener for dish washer and controlling method of the same of
Inventor: KANG HONG KI
IPC: A47L15/00
Filed: 2006-08-04
Abstract: A water softener for a dishwasher and a controlling method thereof are provided to prevent stains due to heavy metal from forming in a part where washing water contacts, and to reduce the amount salt being used through the optimized regeneration cycle of the water softener, thereby elongating the service life of the water softener. A water softener(300) for a dishwasher comprises a water softening tank, a regeneration tank, an air brake(210), a hardness sensor(217), and a regeneration valve. The water softening tank contains ion exchange resin. The regeneration tank stores regeneration water for regeneration of the ion exchange resin. The air brake supplies regeneration water to the regeneration tank. The hardness sensor, as an electrode sensor, is mounted onto the air brake for sensing the hardness of the regeneration water. The regeneration valve controls the inflow of regeneration water in the regeneration tank to the water softening tank, in correspondence to the hardness of regeneration water sensed by the hardness sensor.
Patent KR-20080016299-A (KR)
Title: Optical navigation device and method for compensating an offset in optical navigation device
Inventor: KWAK JONG TAEK
IPC: G06F3/00
Filed: 2006-08-18
Abstract: An optical navigation device and an offset compensating method thereof are provided to compensate incorrect operation caused by light offset of the optical navigation device, gain offset of an image sensor, and a rapid object change or foreign materials by accumulating averages of a digital image signal and offsetting the accumulative average from the current digital image signal. An image input part(20) generates an analog image signal by outputting light and receiving the light reflected from the surface of a table, converts the analog image signal into the digital image signal, and outputs the digital image signal. A delta image generator generates a delta image signal by generating the accumulative average of each pixel of the digital image signal and offsetting the accumulative average from the digital image signal of each pixel. A motion value calculator(50) calculates a motion value through the delta image signal. The delta image generator includes an average calculator calculating/outputting the accumulative average for the digital image signal applied between two points, an average storing part, and a delta image operator generating the delta image signal by offsetting the accumulative average from the digital image signal.
Patent KR-20060094945-A (KR)
Inventor: JANG KYUNG HUN
IPC: H04L47/41
Filed: 2006-08-21
Abstract: 본 발명의 패킷 응집 전송 장치에서는 상위 계층으로부터 다양한 목적지 주소와 트래픽 타입의 매체접속제어 서비스 데이터 유닛(MSDU)들을 전달받고, 상기 MSDU들을 목적지 주소별로 분류하고, 상기 목적지 주소 별로 분류된 MSDU들을 트래픽 타입에 따라 분류하고, 상기 목적지 주소와 트래픽 타입이 동일한 MSDU들을 매체접속제어 프로토콜 데이터 유닛 (MPDU)으로 응집하고, 상기 MPDU 들 중 목적지 주소가 동일한 MPDU들을 물리계층 프로토콜 데이터 유닛(PPDU)으로 응집하고, 상기 목적지 주소가 다른 PPDU들을 하나의 프레임에 실어 전송한다. 본 발명에 따른 패킷 응집 전송 장치에서는 상위계층으로부터 전달되는 패킷들을 목적지 주소와 트래픽 타입에 따라 계층적으로 응집하여 목적지별 데이터 유닛으로 묶어 전송함으로써 목적지 단말에 대한 최적의 전송율로 데이터 전송이 가능하다. 
       
     패킷 응집 (packet aggregation), 매체접속제어 서비스 데이터 유닛(MSDU), 매체접속제어 프로토콜 유닛 (MPDU), 물리계층 서비스 데이터 유닛 (PSDU), 물리계층 프로토콜 데이터 유닛(PPDU)