baber/WOPTO huggingface dataset:
Patent KR-100757530-B1 (KR)
Title: Terminal and method for setting wireless environment
Inventor: O CHANG WHOAN
IPC: H04B7/26
Filed: 2006-05-30
Granted: 2007-09-11
Abstract: A terminal and a method for setting up a wireless environment are provided to establish efficiently a wireless communication environment by selecting a flexible wireless communication option in accordance with a wireless environment and to determine whether VJC is applied corresponding to a wireless communication environment. A wireless environment measurement part in a terminal measures a wireless environment parameter in accordance with a service network connected to the terminal(S310). A PDSN(Packet Data Serving Node) setup part, based on the measured wireless environment parameter and a preappointed table stored in a table storage part, determines whether the application of VJC(Van Jacobson Compress) is required(S320). At this moment, the PDSN setup part determines the application of SACK(Selective Acknowledge), MSS(Maximum Sequence Size), and window size using the measured wireless environment parameter and the preappointed table. Then the PDSN setup part executes PPP NEGO(Point-to-Point Protocol Negotiation) between the terminal and a PDSN according to a determined result for the application of VJC(S330). The PDSN setup part establishes a TCP/IP environment between the terminal and a service provider server in accordance with a determined result for the application of SACK, the determined MSS, and the determined window size(S340).
Patent KR-100779615-B1 (KR)
Title: An improved manufacturing method, a hole-punching assembly and a pressing structure for a hole-punching unit
Inventor: CHOU CHIH CHIANG
IPC: B26F1/44
Filed: 2006-06-02
Granted: 2007-11-26
Abstract: A method for manufacturing a hole-punching assembly is provided to increase a manufacturing efficiency of the hole-punching assembly by simplifying a manufacturing process for the hole-punching assembly. A method for manufacturing a hole-punching assembly(7) comprises the steps of providing a concave part at one side of a balance piece(71), forming an elongated slot(712) in the concave part of the balance piece through a stamping process, forming a row of holes through which a punch piece passes, and connecting the balance pieces using a screw or a bolt. The balance piece is made from aluminum through an extrusion process and has a rectangular shape. The balance piece has a width identical to that of the concave part.
Patent KR-100712419-B1 (KR)
Inventor: YOO CHAN SEI
IPC: H01P3/08
Filed: 2006-06-08
Granted: 2007-04-27
Abstract: 본 발명은 3차원의 구조로, 초광대역의 신호를 필터링하는 대역통과필터를 구성한다. 
     본 발명에 따르면, 순차적으로 적층되는 제 1 내지 제 4 유전체 기판으로 이루어지고, 제 1 유전체 기판은 배면에 제 1 접지패턴이 형성되며, 제 2 유전체 기판은 상면에 제 2 접지패턴이 형성되며, 제 1 및 제 2 유전체 기판의 사이에는 스트립라인 패턴이 형성된다. 그리고 제 4 유전체 기판의 상면에는 필터패턴과 입력 및 출력 커플드 라인패턴이 형성된다. 
       
     초광대역, UWB, 대역통과필터, 적층, 고유전율, 저유전율,
Patent KR-100737952-B1 (KR)
Title: Method and apparatus for washing and rustproofing automatically accessories
Inventor: JEON DONG SUL
IPC: B08B3/04
Filed: 2006-06-09
Granted: 2007-07-13
Abstract: A method and an apparatus for automatically washing and rustproofing a gear part are provided to maximize the productivity and secure uniform quality by automating a series of processes for producing the gear part. An apparatus for automatically washing and rustproofing a gear part removes foreign substances on the surface of the gear part and prevents generation of rust. The apparatus includes a washing unit(10), a washing liquid drying unit(30), first and second rustproofing units(40a,40b), and a rustproofing liquid drying unit(70). The washing unit automatically transfers the part into a washing chamber and injects washing liquid to the surface of the part through a plurality of washing liquid injection nozzles. The washing liquid drying unit removes the washing liquid stuck to the surface of the part by using compressed air and warm air. The first and second rustproofing units selectively perform a rustproofing work in first and second rustproofing chambers. The rustproofing liquid drying unit dries the rustproofing liquid stuck to the surface of the part.
Patent KR-100645004-B1 (KR)
Title: The processing apparatus for stone edge into curved surface, that using cylinder type cutter
Inventor: SIN IL
IPC: B28D1/30
Filed: 2006-06-12
Granted: 2006-11-15
Abstract: An equipment for processing the edge of stone into a curved surface using a cylindrical cutter, which can process the stone edge relatively smoothly without generating a vibration phenomenon, is capable of processing the edge of a stone promptly, and can process the stone edge into various sized curved surfaces through one equipment, is provided. An equipment for processing the edge of stone(1) into a curved surface using a cylindrical cutter comprises: a fixed frame(20) installed on a path along which stone moves; a moving frame(30) moved forward and backward without shaking; a table(40) that is moved together with the moving frame and is vertically movable without shaking; a first rotation body(60) rotatably connected to a speed reducer(50); a second rotation body(70) rotatably installed; a crank shaft(80) for rotating the second rotation body by receiving rotary power of the first rotation body in a way that the second rotation body is rotated forwardly and reversely within a predetermined angle range when the first rotation body is rotated to an angle of 360 degrees; a front and rear connecting shaft(90) for moving the moving frame forward and backward according to rotation of the second rotation body; an up and down connecting shaft(100) for moving the table up and down according to rotation of the second rotation body; a cylindrical cutter(10) rotatably installed on the table; and a motor(110) for rotating the cylindrical cutter.
Patent KR-100733619-B1 (KR)
Title: The composition for anti vibration material
Inventor: PARK JANG SOO
IPC: C08J5/18
Filed: 2006-06-19
Granted: 2007-06-28
Abstract: Provided is a vibration damping composition having a low specific gravity which is excellent in self-adhesive property and is improved in cold resistance. The vibration damping composition comprises 8-15 wt% of butyl rubber; 3-8 wt% of polyisobutylene; 20-40 wt% of a flow preventer; 1-2 wt% of carbon black; 10-30 wt% of the glass bubble having a density of 0.3-0.5 g/cc as a filler; and 1-2 wt% of maleic anhydride polyethylene wax, 8-15 wt% of low molecular weight polybutene and 20-30 wt% of high molecular weight polybutene as a tackifier. Preferably the flow preventer is the calcium carbonate coated with a fatty acid.
Patent KR-100766947-B1 (KR)
Title: Organic light emitting device and organic light emitting display having the same
Inventor: LEE MIN WOO
IPC: H05B33/22
Filed: 2006-07-05
Granted: 2007-10-12
Abstract: An organic light emitting device and an organic light emitting display apparatus having the same are provided to increase life by improving the interface property between a second electrode and a buffer layer. An organic light emitting device(L) includes a first electrode(310), an organic material layer(330), a second electrode(340), and a buffer layer(350). The organic material layer(330) is formed on the first electrode(310) and has an EML(EMitting Layer)(332). The second electrode(340) is formed on the organic material layer(330). The buffer layer(350) is formed between the organic material layer(330) and the second electrode(340) and is composed of a structure where a first buffer layer(351) and a second buffer layer(352) are laminated.
Patent KR-100796460-B1 (KR)
IPC: A01G9/02
Filed: 2006-07-06
Granted: 2008-01-22
Abstract: 본 발명은 각종 농작물이나 원예작물을 아파트 베란다나 거실 등의 실내에서 천청에 매달아 다단으로 분화 재배하는 행거형 분화식물 재배장치에 관한 것으로서, 좀더 상세하게는 양측방에 상하로 다단의 링형 거치대(15)를 구비하여 와이어(11)(12)로 대향 연결하되, 상기 와이어(11)(12)은 천정부(5)의 안내롤 및 스토퍼(50)에 안내, 지지되게 설치되어 상기 와이어를 당기거나 늦추도록 조작하는 것에 의해 승하강 조절하는 지지수단(10)과, 상기 거치대에 수평으로 삽입 설치되어 상부로 재배작물이 담긴 재배용기(2)를 삽입 설치하는 지지튜브(20)와, 각 재배용기로 물이나 양액을 자동 공급하는 물/양액 자동공급부(30) 및 적절한 바람을 공급하는 송풍기(70)를 구비한 것에 의해 실내에서 천청에 매달아 다단으로 분화 재배하면서 공간활용성 및 장식효과를 우수하게 제공함은 물론 각 재배작물에 물이나 양액의 자동공급, 바람 및 각 재배작물의 높낮이 위치를 조절하여 햇볕을 효과적으로 공급하므로 재배 효율성을 극대화하는데 그 특징이 있다. 
       
     행거형, 실내, 재배장치, 농작물, 원예작물, 분화, 높낮이 위치 조절
Patent KR-100841078-B1 (KR)
IPC: G06F7/58
Filed: 2006-07-11
Granted: 2008-06-24
Abstract: 본 발명에 따른 랜덤 번호 회로에는, 중심 주파수로부터의 주파수 오프셋을 가지고 있으며 클록 시퀀스를 포함하는 클록 신호를 상기 중심 주파수에서 발생할 수 있는 발진기, 제1 상태에서부터 제2 상태까지의 전환을 표시하는 리셋 신호를 발생할 수 있는 리셋 회로, 초기값을 발생할 수 있는 초기값 발생기, 및 상기 발진기, 상기 리셋 회로 및 상기 초기값 발생기 중 적어도 하나와 결합되어 있고 상기 클록 신호, 상기 리셋 신호 및 상기 초기값 중 적어도 하나를 수신할 수 있으며, 상기 주파수 오프셋, 상기 전환의 타이밍 및 상기 초기값의 적어도 하나에 따르는 랜덤 번호를 발생할 수 있는 계수기가 포함되어 있다. 
       
     랜덤 번호 발생기
Patent KR-100749843-B1 (KR)
Title: 2,4-quinazoline deivatives having activity to t-type calcium channel and preparation method thereof
Inventor: PAE AE NIM
IPC: C07D403/12
Filed: 2006-07-13
Granted: 2007-08-21
Abstract: 2,4-Quinazoline derivatives having inhibitory activity against T-type calcium channel and a preparation method thereof are provided to treat neuronal pain, epilepsy or hypertension by selectively inhibiting the T-type calcium channel. The 2,4-quinazoline derivatives represented by the formula(1) are provided, wherein n is 1 or 2; R1 is C1-C15 alkyl group, C1-C15 cycloalkyl group, or C6-C10 aryl group optionally substituted by at least one halogen atom, C1-C15 alkyl, C1-15 alkoxy or phenoxy; R2 is C1-C15 alkyl, amino, C1-C15 alkylamino, or 5- to 7-membered saturated or unsaturated hetero ring optionally substituted by halogen atom which contains 1-3 hetero atoms selected from N, O and S. The 2,4-quinazoline derivatives represented by the formula(1) are prepared by reductive-acylating the amine compounds represented by the formula(2) with the carboxylic acid compounds represented by the formula(3) at 0 to 40 deg.C.
Patent KR-101320854-B1 (KR)
IPC: G02F1/13357
Filed: 2006-07-14
Granted: 2013-10-22
Abstract: 본 발명은 액정표시장치에 관한 것이다. 본 발명에 따른 액정표시장치는 표시창을 갖는 상부커버와; 상부커버의 후방에 위치하는 액정패널과; 액정패널의 후방에 배치되어 있는 도광판과; 도광판의 측부를 따라 배치되어 있는 광원부와; 상부커버와 결합되며, 광원부의 빛을 상기 도광판으로 반사시키는 반사부와 반사부의 일측으로부터 도광판의 배면으로 연장되어 있는 지지부를 포함하는 광원커버를 포함하는 것을 특징으로 한다.　이에 의해, 원가를 절감할 수 있는 경량 및 박형의 액정표시장치가 제공된다.
Patent KR-100639755-B1 (KR)
Title: Supporting apparatus of cable in earth
Inventor: LEE KYOO SEUNG
IPC: H02G9/02
Filed: 2006-07-25
Granted: 2006-11-01
Abstract: An underground cable supporting apparatus for housing complex is provided to transfer rainwater a right/left side of a hanger by forming a rainwater induction groove at a horizontal part formed on a supporting plate. A hanger(10) includes an adhesive plate(11) and a supporting plate(12). The adhesive plate includes a fixing part(111) having a through-hole(111a) formed on a wall by using an anchor bolt(102) and an adhesive part(112). The supporting plate includes a bent part(121), a horizontal part(122) having a right induction groove, and a supporting part(123) having a bent section(123a), a plurality of insertion holes(123b), and a fixing hole(123b'). A supporting clamp(20) is formed with a holder(21), a coupling plate(22), and a fixing plate. The holder includes a hanging section, a cable penetration hole, a convex part, and a concave part. The coupling plate includes a sealing part having a sealing groove and a projection bar, a connecting part, and an adhesive part. The fixing plate includes a front separate part, a body, a rear separate part, and a coupling section. A hole of the front separate part is connected with a hole of the rear separate part. A handle is formed at each of upper and lower parts of the rear separate part. The coupling section is inserted into the rear separate part.
Patent KR-100786845-B1 (KR)
Title: Oscillator for geverating pyramidal wave and square wave, and organic light emitting display device using the same
Inventor: KIM DO IK
IPC: H05B33/02
Filed: 2006-07-31
Granted: 2007-12-20
Abstract: An oscillator for generating a triangular wave and a square wave and an organic light emitting display device using the same are provided to reduce the EMI(Electro Magnetic Interference) generated in a wiring, and the noise interference between the wirings. An oscillator for generating a triangular wave and a square wave includes a buffer circuit(10), an integrator(20), a first resistor(R1), and a second resistor(R2). The buffer circuit outputs a square wave signal to a square wave output stage. The integrator integrates the square wave signal, and generates and outputs a triangular wave signal. The first resistor is connected between an input stage of the buffer circuit and the square wave output stage. The second resistor is connected between an output stage of the integrator and the input stage of the buffer circuit.
Patent KR-100826721-B1 (KR)
Title: Air conditioner and controlling method thereof
Inventor: KIM HO JUNG
IPC: F24F11/02
Filed: 2006-08-03
Granted: 2008-04-30
Abstract: A ceiling type air conditioner is provided to form optimal air flow suitable for indoor space, and to improve comfort of users by adjusting an angle of a discharge vane corresponding to installation space and height of the air conditioner. A ceiling type air conditioner comprises an information input unit(110), a memory unit(120), a vane driving unit(130) and a controller(100). The information input unit inputs information for operation of the air conditioner. The information input unit includes a space state input unit equipped with a height input unit and an indoor structure input unit. The memory unit stores operation information corresponding to the inputted information. The vane driving unit adjusts a turning angle of a discharge vane according to the operation information corresponding to the inputted information. The controller controls drive of the vane driving unit according to the operation information corresponding to the inputted information.
Patent KR-100807050-B1 (KR)
Title: Semiconductor device and fabricating method thereof
Inventor: HAN JAE WON
IPC: H01L23/36
Filed: 2006-08-23
Granted: 2008-02-25
Abstract: A semiconductor device and a fabricating method thereof are provided to radiate the heat generated from each device by electrically connecting the uppermost device to the lowermost device. Plural devices(210,230,250) are stacked on an interposer(200), and through-electrodes(211,231,251) are formed in the devices, respectively, to penetrate through the respective device. Connection electrodes(221,241) are formed between the respective devices to connect the through-electrode formed in an upper device to the through-electrode formed in a lower device. The through-electrodes formed in each device are connected to ground electrodes of the respective devices. A metal film is formed under a lower surface of the device positioned at the lowermost position.
Patent KR-100784536-B1 (KR)
Title: Terminal for controlling a event, and method thereof
Inventor: KIM SUNG JIN
IPC: H04B1/40
Filed: 2006-08-29
Granted: 2007-12-11
Abstract: An event control terminal and a method thereof are provided to enable a user to adjust the volume, to change setting values or to set up a vibration or backlight function while executing a Java game through his mobile terminal. If a user selects a desired Java game through an input part and inputs a command to run the selected Java game(S202), a control part drives a Java virtual machine through a Java machine driving part and executes the selected Java game(S204). If the user selects an event control menu through the input part in the middle of executing the Java game(S206), the control part displays event control items through a Java midlet(S208). If the user selects an event control item about volume adjustment among the displayed event control items(S210), the control part displays an icon to adjust the volume of the Java game(S212). If the user inputs an event control command about volume adjustment while watching the icon(S214), the control part adjusts the volume or establishes a vibration or backlight function according to the inputted event control command(S216).
Patent KR-100757971-B1 (KR)
Title: Apparatus for cleaning the wheels of vehicle
Inventor: CHO NAM YOUNG
IPC: B60S1/68
Filed: 2006-08-30
Granted: 2007-09-11
Abstract: An apparatus for cleaning wheels of a vehicle is provided to simplify the cleaning work by solving the problem of having to locate tires at a predetermined portion of the apparatus. An apparatus for cleaning wheels of a vehicle includes a plurality of support members(11), an endless belt(20), a drive rotational body(32), a driven rotational body(33), and a power generating and transferring unit. The support members have a narrow width and are installed on the upper surface of a water storage tank by a predetermined interval. The endless belt is provided between the support members. Brushes making contact with tires are formed on the outer surface of the endless belt. The drive rotational body and the driven rotation body rotate the endless belt. The power generating and transferring unit drives the drive rotational body.
Patent KR-100776684-B1 (KR)
Title: Home network system and home network service method
Inventor: JUNG SE WON
IPC: H04L12/16
Filed: 2006-08-30
Granted: 2007-11-16
Abstract: A home network system and a home network service method are provided to install a home network server in an IDC(Internet Data Center), thereby collectively managing various groups of home gateways which use corresponding home networks, consequently server management costs are cut down. A home network server group(210) comprises as follows. A home gateway interworking server(211) interworks with home gateways(240-1~240-N) to control home electric/electronic devices where the home gateways(240-1~240-N) are installed, and inquires about state information. A DDNS(Dynamic Domain Name Server)(212) manages home gateway IP(Internet Protocol) addresses of each subscriber, and delivers an IP address of a home gateway equivalent to a subscriber who wants to access the home gateway to the interworking server.
Patent KR-101308398-B1 (KR)
IPC: H01L21/027
Filed: 2006-08-31
Granted: 2013-09-16
Abstract: 본 발명은 약액 회수장치 및 이를 이용한 약액 회수방법에 관한 것으로, 기판이송방향을 따라 이송되는 기판에 대하여 습식처리하는 베쓰와, 상기 베쓰 저면에 형성되어 기판의 습식처리에 사용된 약액을 집수하는 집수부와, 상기 집수부의 약액을 유입받아 저장하는 회수탱크를 포함하는 약액 회수장치를 제공한다. 또한 본 발명은 (a) 상기 베쓰에서 기판의 습식처리에 사용된 약액을 상기 베쓰의 저면에 형성된 집수부에 집수하는 단계; 및 (b) 상기 집수부에 집수된 약액을 회수탱크로 유입시켜 저장하는 단계를 포함하는 약액 회수방법을 제공한다. 본 발명에 의하면, 폐현상액을 회수하는 구성부품의 간소화로 인해 장비의 원가를 대폭 절감할 뿐만 아니라 설치가 용이해지며 유지보수가 간편해 진다는 효과가 있다. 
       
     기판, 약액, 회수, 집수부, 회수탱크
Patent KR-100789140-B1 (KR)
Title: A novel maximum likelihood decoding scheme for multi-input multi-output systems
Inventor: SONG IICK HO
IPC: H04B7/04
Filed: 2006-09-22
Granted: 2007-12-28
Abstract: A novel maximum likelihood decoding method suitable for a multi-input multi-output system is provided to be capable of suggesting a signal decoder which obtains the most similar explanation by finding grating points hidden in a second space, and to obtain and compare bit error rate performance and average multiplying frequency of the suggested decoder and a sphere decoder through Montecarlo simulation. Through input values, output values are derived by decomposing a matrix to calculate a certain formula, and by obtaining a value with the use of a decision feedback equalization method and calculating another formula. Through another input values, the most likelihood explanation output value is derived. A threshold value is obtained by using a mathematical formula 18 and a mathematical formula 19.
Patent KR-100790887-B1 (KR)
Title: Apparatus and method for processing image
Inventor: ZHANG HUI
IPC: G06V10/24
Filed: 2006-09-22
Granted: 2008-01-02
Abstract: An image processing apparatus and a method thereof are provided to generate a panoramic image by precisely connecting a plurality of images captured in various directions and to correct color of an image quickly. An image aligning unit(220) moves at least one of images to be connected such that colors of overlapped images correspond to each other to the limit, and repeatedly operate in response to a re-alignment signal. An image correcting unit(224) corrects at least some colors of the overlapped images after movement in consideration of colors of the overlapped images, and generates the re-alignment signal. A comparing unit(226) compares a difference between a color similarity of overlapped images resulting from a current movement and that of overlapped images resulting from an immediately previous movement with a threshold value. The image correcting unit(224) operates in response to the comparison result.
Patent KR-100782856-B1 (KR)
Title: Method and apparatus for upgrading software of digital broadcasting receiver
Inventor: KOH KWANG HYUN
IPC: H04N5/44
Filed: 2006-09-26
Granted: 2007-12-06
Abstract: A method and an apparatus for upgrading software of a digital broadcasting receiver are provided to perform upgrade of each module included in software using upgrade data according to upgrade information including an upgrade method information and version information of plural modules which are included in the software of the digital broadcasting receiver, thereby effectively upgrading the software. A method for upgrading software of a digital broadcasting receiver comprises the following steps of: receiving upgrade data needed for upgrade and upgrade information including information related to upgrade method and version information related to plural modules which are included in the software(200); and performing upgrade of the software according to information related to the upgrade method using the upgrade data(210). The upgrade method includes at least one among an upgrade data type, a transmission method of the upgrade data, a memory position, and time information of the upgrade.
Patent KR-100821147-B1 (KR)
IPC: B60W30/16
Filed: 2006-09-27
Granted: 2008-04-14
Abstract: 본 발명은 운전자 가변형 헤드웨이타임 설정시스템 및 방법에 관한 것으로서, 더욱 상세하게는 선행 차량이 있는 경우에 운전자의 선행차량 추종 패턴을 실시간으로 학습시켜 운전자의 성향 및 주위 환경에 따라 가변적으로 헤드웨이타임을 설정하도록 하는 장치 및 방법에 관한 것이다. 
     본 발명에 따른 운전자 가변형 헤드웨이타임 설정시스템은 차량의 주행상황에 따라 차속을 자동 조절하는 ACC 시스템에서 헤드웨이타임 설정을 위해 학습을 실행시키기 위한 메모리 버튼과, 학습이 끝난 후 저장을 위한 세트 버튼이 구비되는 ACC HMI장치와, 상기 차량 전방으로 레이저빔을 주사하여 선행차량을 검출하는 동시에, 선행차량까지의 차간거리를 검출하는 차간거리 레이더와, 주행중인 차량의 현재 차속을 검출하는 차속 센서와, 상기 메모리 버튼을 누른 경우 차속과 차간거리로 헤드웨이타임을 구하여 이 헤드웨이타임으로 운전자의 선행차량 추종 패턴을 실시간으로 학습하고 이를 연산하여 헤드웨이타임을 설정하며, 상기 세트 버튼을 누르면 설정된 헤드웨이타임을 저장하는 ACC 제어유닛을 포함한다. 
       
     헤드웨이타임, 차간거리제어, TTG(Time-To-Gap), 운전자 가변형
Patent KR-100756745-B1 (KR)
Title: A can communication recovery system using termination register
Inventor: KWAK HEE CHON
IPC: H04L12/26
Filed: 2006-09-28
Granted: 2007-09-07
Abstract: A CAN(Controller Area Network) communication recovery system using a termination resistor is provided to recover an ECU(Electronic Control Unit) fault including the termination resistor or a disconnected communication line, so that another ECU can play a role of a malfunctioning ECU, thereby removing a risk of distortion of a communication signal. A monitoring and control ECU for setting a circumstantial termination resistor by checking a network state is additionally installed in a communication bus. Demultiplexers are serially connected with termination resistor application circuits of each communication unit connected in a CAN bus, so as to connect or disconnect termination resistors by receiving a control signal from the monitoring and control ECU. Two termination resistors are selected in the CAN bus according to the control signal outputted from the monitoring and control ECU.
Patent KR-101377455-B1 (KR)
IPC: H04L9/00
Filed: 2006-10-09
Granted: 2014-04-02
Abstract: 본 발명은 브로드캐스트 암호화를 위한 암호화 키 생성 방법에 관한 것으로서, 브로드캐스트를 위한 암호화 키를 효율적으로 생성할 수 있도록 하는 브로드캐스트 암호화를 위한 암호화 키 생성 방법 및 장치를 개시한다.  본 발명에 따른 브로드캐스트 암호화를 위한 암호화 키 생성 방법은 복수의 뎁쓰(Depth)로 구성된 루트 노드로부터 복수의 리프 노드들까지 모든 노드들에 대한 제1 암호화 키를 생성하는 단계, 및 상기 루트 노드와 상기 복수의 리프 노드들 사이의 각 중간 노드들에 대한 제2 암호화 키를 생성하는 단계를 포함하고, 상기 제2 암호화 키를 생성하는 단계는 상기 제1 암호화 키를 이용하여 상기 중간 노드의 시블링 노드와 연결된 제1 자식 노드가 상기 중간 노드의 좌측 또는 우측 경로에 있는지 여부에 따라 제1 키 또는 제2 키 중 어느 하나를 생성하는 단계를 포함하는 것을 특징으로 한다. 
       
     브로드캐스트 암호화, 루트 노드, 리프 노드, 시블링 노드, 해쉬 함수, 암호화 키, 암호화 키 그룹