Abstract:
본 발명은 IPTV(Internet Protocol TV) 에서의 채널 변경 시스템 및 그 방법에 관한 것으로, 보다 상세하게는 IGMP(Internet Group Management Protocol) 메시지의 수정을 통해 시청 후보 채널을 미리 라우터에 등록함으로써 IPTV 환경에서의 채널 변경을 고속으로 가능하게 하는 시스템과 그 방법에 관한 것이다. 본 명세서에서 개시하는 IPTV에서의 채널 변경 방법은 (a)IPTV 환경에서 사용자가 시청 중인 채널의 변경 시에 셋탑 박스가 시청 후보 채널들을 라우터에 미리 등록하는 단계; (b)IPTV 서비스를 제공하는 인터넷 방송 서버가 상기 시청 후보 채널들의 방송 패킷을 상기 라우터에 사전 전송하는 단계; 및 (c)상기 사용자가 변경한 채널이 상기 미리 등록한 후보 채널들에 포함되는 경우, 상기 라우터가 상기 셋탑 박스에 해당 방송 패킷을 전송하는 단계를 포함하여 본 발명의 목적 및 기술적 과제를 달성한다.
Abstract:
An apparatus and a method for connecting a video phone in a set-top-box are provided to allow a set-top-box to automatically turn on TV when a user has a phone call while the TV is turned off. A set-top-box(103) includes a transceiver(202), a video phone processor(203), and a TV power processor(204). The transceiver performs communication with a telephone network, a telephone, and a TV receiver. The video phone processor provides a video phone function between an external telephone connected to the telephone network and the telephone. The video phone processor outputs an image through the TV receiver and transmits a speech signal to the telephone when the video phone function is executed. The TV power processor confirms whether the TV receiver is turned on or off when a video phone call signal is received from the video phone processor through the telephone network or a user picks up the receiver in response to the video phone call signal and turns on the TV receiver when the TV receiver is turned off.
Abstract:
본 발명은 플로우별로 패킷 필터링 규칙을 설정하여 수신 패킷에 대해 매치되는 필터링 규칙을 빠르게 검색하면서 운용자가 자유롭게 필터링 규칙을 추가, 삭제, 수정할 수 있는 네트워크 장치에서의 고속 패킷 필터링 방법 및 장치, 그리고 이를 지원하는 네트워크 장치에 관한 것으로서, 본 발명은 라우터와 같은 고속의 성능을 요구하는 네트워크 장치에서 효과적으로 악성 패킷을 차단하기 위해, 플로우 값을 키로 하는 패킷 필터링 테이블을 구성하고, 상기 패킷 필터링 테이블의 각 엔트리에 링크된 연동 데이터를 이용하여 필터링 규칙을 기술함으로써, 수신된 패킷에 매치되는 필터링 규칙을 검색할 경우 더 빠르게 대응하는 필터링 규칙의 유무를 확인할 수 있으면서, L4 이상의 필터링 및 컨텐츠 필터링까지 지원할 수 있는 것이다. TCAM, 패킷 필터링, 컨텐츠 필터링, 플로우, 연동 데이터, 5-투플(tuple)
Abstract:
본 발명은 이더넷-폰(Ethernet-PON) 시스템에서의 가상 랜 관리 장치 및 그 방법에 관한 것이다. 본 발명에서는, 광 종단 장치(Optical Line Terminator)와 광 통신망 유니트(Optical Network Unit)를 포함하는 이더넷-폰(Ethernet-PON) 시스템에서의 가상 랜(LAN) 관리 장치에 있어서, 광 종단 장치의 포트에 가상 랜을 설정하는 가상랜 설정/제어부와, 설정한 가상 랜의 상태를 포함하는 가상 랜 정보를 주기적으로 갱신하며, 갱신한 가상 랜 정보와 광 통신망 유니트가 관리하는 단말기별 가상 랜 정보가 일치하지 않으면, 일치하지 않은 정보를 가진 광 통신망 유니트별 응답 여부에 따라 갱신한 가상 랜 정보를 전송하는 가상랜 정보 관리부를 포함한다. 이때, 가상랜 정보 관리부와 광 통신망 유니트는 레드-블랙 트리(Red-Black Tree) 알고리즘에 따라 가상 랜 정보를 주기적으로 갱신한다. E-PON, 가상 랜(LAN), 광 종단 장치(OLT), 광 통신망 유니트(ONU/ONT)
Abstract:
PURPOSE: An Internet voice communication gateway system capable of separately processing a signal and media by using common channel signaling and a voice communication service providing method are provided to transfers a service to a user at a high speed by distributing load of a gateway system. CONSTITUTION: A common channel signaling network(101) and a PSTN(103) interwork to be connected to the Internet(106). A CNAS(CCS No.7 Network Access Subsystem)(102) is connected to the common channel signaling network(101). A VNAS(VoIP Network Access Subsystem)(104) provides a VoIP service at the Internet. An Ethernet switch(105) connects the CNAS(102) and the VNAS(104). The VNAS(104) manages a signaling point of the common channel signaling network, a destination number or a trunk link ID. The CNAS(102) manages a trunk and channel information of the VNAS as a table and distribute them. An SCTP(Stream Control Transmission Protocol) and an M3UA(MTP3-User Adaptation) layer are used between the CNAS(102) and the VNAS(104). An NIF(Nodal Interworking Function) provides an interworking function between the SCTP and the M3UA.
Abstract:
PURPOSE: A method of transmitting accounting packets between a gateway and an accounting server is provided to store accounting packets in a self memory after the accounting server is down, and to store the packets in a local operation and maintenance server if the packets exceed a threshold value of the memory, thereby preventing loss of the accounting packets. CONSTITUTION: An H323 task checks a speech state(S601), and decides whether a call is started or completed(S602). If the call is completed, the H323 task collects accounting information(S604), and transmits the accounting information to an RADIUS(Remote Authentication Dial-In User Service) task(S605). The RADIUS task searches an accounting packet having a free flag, and fills a header value(S606), and generates each attribute by using the accounting information(S607). The RADIUS task decides whether an accounting server having high priority is alive(S609). If so, the RADIUS task generates a UDP(User Datagram Protocol) socket(S611), transmits the accounting packet to the accounting server(S612), and waits for a response packet(S613). The RADIUS task decides whether the response packet is received(S614). If so, the RADIUS task cancels a memory, changes a flag value into 'free', and completes an accounting packet transmission(S616).
Abstract:
PURPOSE: A method for controlling data flow in an AICPS.LiTE system is provided to increase the data throughput for each channel by using the LWM(Low Water Mark)/HWM(High Water Mark) threshold of a TNAB(Telephony Network Access Board) and the flow control message method of an NDPB(Network Data Processing Board) in the case of executing uploading service and downloading service in an AICPS.LiTE system. CONSTITUTION: A TNAB(301) consists of an E1 framer driver(303), a TDM switch driver(304), four UAM modules(305-308), a data receiving processing(311), a data transmitting processing(313), and an HDLC driver(315). The E1 framer driver(303) covers the processing of signals and data incoming from a trunk. The TDM switch driver(304) executes a data exchange function between the E1 framer driver(303) and the UAM modules(305-308). Each UAM module(305-308) having 30 receiving buffers(309) and 30 transmitting buffers(310) is in charge of a modem pool function for 1E1, 30 subscribers. The data receiving processing(311) receives data through a channel-by-channel mail box(312) from the UAM modules(305-308), executes PPP framing processing for the received data, and transmits the processed data to the HDLC driver(315). The data transmitting processing(313) receives data through a channel-by-channel queue(314) from the HDLC driver(315) and transmits the received data to the UAM modules(305-308). The HDLC driver(315) communicates with an NDPB(316) through an HDLC link. The data transmitting processing(313) executes data flow control by exchanging flow control messages with the NDPB(316) through the HDLC driver(315).
Abstract:
PURPOSE: A method for controlling data flow in an AICPS.LiTE system is provided to increase the data throughput for each channel by using the LWM(Low Water Mark)/HWM(High Water Mark) threshold of a TNAB(Telephony Network Access Board) and the flow control message method of an NDPB(Network Data Processing Board) in the case of executing uploading service and downloading service in an AICPS.LiTE system. CONSTITUTION: A TNAB(301) consists of an E1 framer driver(303), a TDM switch driver(304), four UAM modules(305-308), a data receiving processing(311), a data transmitting processing(313), and an HDLC driver(315). The E1 framer driver(303) covers the processing of signals and data incoming from a trunk. The TDM switch driver(304) executes a data exchange function between the E1 framer driver(303) and the UAM modules(305-308). Each UAM module(305-308) having 30 receiving buffers(309) and 30 transmitting buffers(310) is in charge of a modem pool function for 1E1, 30 subscribers. The data receiving processing(311) receives data through a channel-by-channel mail box(312) from the UAM modules(305-308), executes PPP framing processing for the received data, and transmits the processed data to the HDLC driver(315). The data transmitting processing(313) receives data through a channel-by-channel queue(314) from the HDLC driver(315) and transmits the received data to the UAM modules(305-308). The HDLC driver(315) communicates with an NDPB(316) through an HDLC link. The data transmitting processing(313) executes data flow control by exchanging flow control messages with the NDPB(316) through the HDLC driver(315).