Abstract:
본 발명은 댁내 방송분배 기능을 갖는 유무선 방송분배 장치 및 이를 이용한 방송채널 생성/해지 방법에 관한 것으로, HD급의 다채널 지상파/위성/케이블방송 등을 수신하여 IEEE1394 등시성 패킷(Isochronous Packet)으로 변환하거나, IEEE1394 신호로 변환된 방송 패킷을 다시 UWB 무선 신호로 변환하여 댁내로 전송함으로써 장소에 구애받지 않고 수 백 Mbps급의 전송 대역폭을 필요로 하는 다채널 HD급의 유무선 방송을 분배한다. 홈 네트워크, 디지털 방송, IEEE1394, UWB, 방송분배
Abstract:
본 발명에 따른 디지털 데이터 방송을 이용한 소프트웨어 전송 방법 및 장치는, 방송국에서 디지털 방송에 응용프로그램 소프트웨어를 실어서 방송을 송출하고, 허용된 가입자가 디지털 방송 수신 장치를 통하여 방송 스트림에 실려오는 소프트웨어를 추출 분리하여 홈의 컴퓨팅 장치로 재전송하여 소프트웨어를 설치 운영하도록 하는 방법이다. 이 방법은 기존의 컴퓨터 시디롬이나 인터넷을 통하여 소프트웨어를 다운로드 받아서 소프트웨어를 설치 운영하는 방법에서 벗어나 디지털 데이터 방송에 실려오는 응용프로그램 소프트웨어를 추출하여 소프트웨어를 설치 운영함으로써 디지털 방송 수신이 가능한 지역 어디에서나 소프트웨어 전송과 운영이 가능하며 리턴 채널(Return Channel)을 통하여 사용자 인증 및 소프트웨어 선택과 사용에 관한 정보를 교환함으로써 소프트웨어 사용에 대한 과금(Billing) 체계의 구성과 전체 시스템의 보안 관리가 용이하다.
Abstract:
본 발명은 전력선 통신 프로토콜의 1.5 계층에서의 프로토콜 분기 시스템에 관한 것으로, 네트워크로 연결되는 전력선과, 전력선을 통해 다수의 상위 계층으로 통신 프로토콜을 분기하는 물리계층(Physical layer)과 MAC 계층(Medium Access Control layer)으로 이루어진 1.5 계층 이하의 단일 전력선 송수신 모듈과, 단일 전력선 송수신 모듈과 상기 다수의 상위 계층을 연결하여 네트워크 프로토콜을 복합 및 분기시킴으로써 프로토콜의 수정을 최소화하는 저 계층 멀티플렉서 모듈(Low layer Protocol Multiplex module : LPMux)을 포함한다. 본 발명에 의하면, 전력선 네트워크에서 물리계층과 MAC계층의 단일화된 네트워크 인터페이스(송수신 모듈)를 통해 다양한 상위 통신 프로토콜을 지원함으로써, 물리적인 통신 매체의 효율을 저하시키지 않고 여러 개의 이질적인 통신 프로토콜을 운용할 수 있는 기반 구조가 가능하다.
Abstract:
본 발명은 PSTN와 VoIP 전화 기능을 구비한 xDSL 및 VoIP 인터페이스를 갖는 홈 게이트웨이 장치에 관한 것이다. 본 발명은, 댁내 망과 액세스 망을 연결하며 xDSL인터페이스와 VoIP인터페이스를 갖는 홈 게이트웨이 장치에 있어서, 댁내 망과 액세스 망간의 데이터 처리 및 흐름을 제어하는 시스템 제어부; 하나 이상의 포트를 구비하며 제1 커넥터를 통해 상기 액세스 망과의 접속기능을 제공하고 상기 액세스 망과의 송수신 신호를 처리하는 액세스 망 신호처리부; 상기 액세스 망 신호처리부의 신호처리에 따른 시스템 제어부와의 인터페이싱을 제공하는 액세스 망 접속부; 제2 커넥터를 통해 상기 댁내 망과의 홈피엔에이 접속을 제공하고 상기 댁내 망과의 HomePNA 신호를 처리하는 홈피엔에이(HomePNA) 처리부; 및 상기 제2 커넥터를 통해 상기 댁내 망과의 POTS/VoIP 접속을 제공하고 상기 댁내 망과의 POTS/VoIP 신호를 처리하는 브이오아이피(VoIP) 처리부를 포함하며, 상기 액세스망으로는 단일의 상기 제1커넥터접속을 제공하여 인터넷 및 PSTN신호를 동시에 전송하고, 상기 댁내망으로는 단일의 상기 제2커넥터접속을 제공하여 POTS/VoIP기능을 선택적으로 사용함과 동시에 댁내 전화망에 접속된 홈피엔에이 장치의 접속이 가능하도록 된 것을 특징으로 한다.
Abstract:
PURPOSE: An UPnP(Universal Plug and Play) PLC(Power Line Communication) adapter and a method for controlling the same are provided to control PLC devices, which cannot support UPnP, through UPnP. CONSTITUTION: An UPnP PLC adapter(100) consists of a PLC command processing module, a PLC state receiving module, an UPnP discovery server module, an UPnP description server module, an UPnP control server module, and an UPnP event server module. The UPnP PLC adapter(100) makes a virtual PLC route device for PLC devices(500-530) on a PLC network and announces it to the UPnP CPs(Control Points)(200,210) of an UPnP network(300). The PLC command processing module sends a command to a PLC device and receives a response. The PLC state receiving module receives a state change from a PLC device. The UPnP discovery server module receives a search message from an UPnP CP and sends a response message for the virtual PLC route device. The UPnP description server module modifies the description of the virtual PLC route device in case that an additional PLC device is found out or an existing PLC device is removed. The UPnP control server module receives an UPnP control message from an UPnP CP and converts it into a relevant PLC command. The UPnP event server module receives an event registration request message from an UPnP CP and sends an associated response message.
Abstract:
PURPOSE: A frequency domain channel compensation circuit without division is provided to estimate and compensate a channel by using a pilot signal of a received signal and remove ISI(Inter Symbol Interference) and ICI(Inter Chip Interference) by using a single tap equalizer. CONSTITUTION: A frequency domain channel compensation circuit without division includes a pilot channel compensation circuit and a single tap equalizer. The pilot channel compensation circuit is used for estimating an error after a pilot signal passes a channel. In addition, the pilot channel compensation circuit is used for obtaining an approximate value of a pilot channel compensation coefficient by estimating the error. The single tap equalizer is used for improving an initial symbol coefficient by using an output of the pilot channel compensation circuit.
Abstract:
PURPOSE: A dynamic priority queueing engine in a home gateway system, a method thereof and a data service system of a home gateway using a queueing engine are provided to assign a higher dynamic priority to a real-time service class packet, and to increase priority weight for a non real-time service class packet according to a standby time of a queue, thereby securing service fairness for each service class. CONSTITUTION: A receiving queue(300) queues up for packets incoming to receive a service. A processing queue(310) assigns dynamic priorities to the packets of the receiving queue(300) in consideration of priorities given according to service classes when the packets are produced, arriving rates of the queueing packets, and weight that increases the priorities according to a standby time of the receiving queue(300). An execution queue(320) stands by in order to receive a substantial service according to the dynamic priorities of the packets of the processing queue(310).
Abstract:
PURPOSE: An apparatus and a method for controlling a device of a private network in a public network are provided to offer a data structure of a message used for a communication protocol between a client of the public network and a directory server controlling the device of the private network, when the client controls the device. CONSTITUTION: A control point system(21) comprises a UPnP(Universal Plug and Play) control point function module(210), a URL(Uniform Resource Locator) information change module(220) and an NAT(Network Address Translation) registration management module(230). The UPnP control point function module(210) provides a multicast discovery function, and a description request and receiving function. The URL information change module(220) extracts URL information from a description document in a UPnP devices(100) of a private network device received by the UPnP control point function module(210) and allocates a public address corresponding to a private address, to produce a changed description document having information on the URL changed to the public address. And the NAT registration management module(230) stores and manages matching relation between the private address and the public address in an NAT table. A proxy server system(24) comprises a unicast discovery/advertisement processing module(240) and a changed description request management module(250). The unicast discovery/awareness processing module(240) receives a discovery message delivered from a public network client(300) to respond to the URL information of the device description, and delivers a unicast advertising message to the public network client(300) if new device description information is generated in the private network. And the changed description request management module(250) delivers the changed description document generated in the control point system(21), if a description request is delivered from the public client(300).
Abstract:
PURPOSE: A bridging device for processing stream data and a method therefor are provided to transmit a stream between an ATM(Asynchronous Transfer Mode) association device connected to the outside and a device connected to an 1394 serial bus by using a VPI/VCI(Virtual Path Identifier/Virtual Channel Identifier) and channel information. CONSTITUTION: An ATM processing unit(11) connects to an ATM interface having an SAR(Segmentation And Reassembly) function through a PCI(Peripheral Component Interface) bus for segmenting and reassembling an ATM cell transmitted through an ADSL(Asymmetric Digital Subscriber Line) physical layer through a UTOPIA(Universal Test and Operations PHY Interface for ATM) bus. A home PNA(Phoneline Network Alliance) processing unit(12) receives a packet of a home PNA physical layer transmitted through a telephone line, converts the received packet into a MAC(Media Access Control) packet frame, and transmits the MAC packet frame through the PCI bus. An 1394 processing unit(13) has an 1394 physical layer and an 1394 link layer(131) and connects the 1394 physical layer and the 1394 link layer(131) through the PCI bus. A memory table(14) stores information associated with interfaces.
Abstract:
PURPOSE: A device and a method for managing a network fault by communication between multi-agents are provided to arrange an MACP(Multi-Agent Communication Protocol) sharing fault causes and restoration methods between agents and information managed by each agent through a mediator system, so that each agent itself can detect and restore a fault. CONSTITUTION: A manager system(10) includes a client(11) and a server(13). The client(11) provides a user interface. In the server(13), a message processing module(19) processes messages transmitted from a mediator system(20) and management request messages of a manager delivered from the mediator system(20). A collecting module(15) collects the messages periodically. An analyzing module(16) analyzes and processes information collected by the collecting module(15). And a database(17) converts the collected information into statistical information and stores the converted information. The mediator system(20) includes a client(21) and a server(23). The client(21) provides an interface for network monitoring. In the server(23), a message processing module(29) classifies messages from agents(30,40). A mediating module(28) accepts a message requiring mediation from the message processing module(29), and analyzes the message to request fault diagnosis to a corresponding agent. A collecting module(25) collects the messages from the agents(30,40). An analyzing module(26) analyzes and processes the information collected by the collecting module(25). And a database(27) converts the collected information into statistical information and stores the converted information. In the agents(30,40), collecting modules(35,45) collect current state information of the agents(30,40). Rule storing parts(37,47) diagnose generated faults and store restoration rules. Deductive engines(38,48) diagnose faults of the agents(30,40) and perform deduction for restoring the faults. And message processing modules(39,49) transmit information on the fault diagnosis and restoration performed in the agents(30,40) to the mediator system(20).