Patent application number | Description | Published |
20090147681 | METHOD AND APPARATUS OF DOWNSTREAM SERVICE FLOW CONTROL IN HFC NETWORKS - A method and apparatus of controlling a downstream service flow is provided. A method of controlling a downstream service flow, the method including: receiving a control request with respect to a service flow; generating classifier information for identifying a Quality of Service (QoS) classification standard of the service flow for which a generation request is performed, and registering the generated classifier information in a table when the control request is the generation request for the service flow; registering a pattern mask corresponding to the classifier information in the table; and composing the table for searching for downstream service flow information of a downstream input packet using the classifier information and the pattern mask. | 06-11-2009 |
20090147781 | METHOD AND APPARATUS OF MULTICAST SERVICE FLOW PROCESSING FOR HEADEND CABLE MODEM - A method and apparatus of processing a multicast service flow for a headend cable modem is provided. | 06-11-2009 |
20090147788 | METHOD AND APPARATUS OF DOWNSTREAM SERVICE FLOWS CLASSIFICATION FOR HEADEND CABLE MODEM - A method and apparatus of classifying downstream service flows for a cable modem is provided. A method of classifying downstream service flows, the method including: classifying a service flow based on a Quality of Service (QoS) using a destination address of an inputted packet; composing an internal header including corresponding service flow information based on the classifying of the service flow; and adding the internal header to the inputted packet. | 06-11-2009 |
20100162337 | APPARATUS AND METHOD FOR PROCESSING VIDEO SERVICE FLOW USING DUAL SCHEDULER FOR HEADEND CABLE MODEM IN HFC NETWORK - Provided is an apparatus and method for providing a video service flow using a dual scheduler for a headend cable modem in a Hybrid Fiber Coax (HFC) network. The apparatus may include: a service flow processing unit to determine whether a packet corresponds to a registered video service flow, when the packet is received; and at least one channel transmitter to schedule a packet corresponding to the registered video service flow and a packet not corresponding to the registered video service flow so that a transmission rate of the registered video service flow is guaranteed, and to thereby transmit the packets. | 06-24-2010 |
20110153859 | HEADEND SYSTEM BASED ON IP NETWORK, METHOD OF OPERATING THE HEADEND SYSTEM, AND QAM PRE-PROCESSOR - Provided is an IP network-based headend system. The headend system may obtain service flow information pre-registered in a subscriber modem device, may transmit, to a service supply server connected based on an IP network, the pre-registered service flow information and the network protocol packet, may determine a data reception route determined by the service supply server, may receive, from the service supply server, a video data stream to perform data processing, may receive data processed video data stream, and may transmit the data processed video data stream to the subscriber modem device based on the pre-registered service flow information. | 06-23-2011 |
20110154424 | APPARATUS AND METHOD FOR TRANSMITTING VIDEO STREAM - A video stream transmission apparatus is provided. The video stream transmission apparatus may register an information flow path through which an Internet Protocol (IP)-based data packet is received from an IP network based on snooping information that is received through a cable modem termination device from at least one subscriber terminal, may receive the IP-based data packet directly from an information supply device through the registered information flow path, and may transmit the received IP-based data packet to a Hybrid Fiber Coax (HFC)-based cable network. | 06-23-2011 |
20110228775 | METHOD AND APPARATUS OF MULTICAST SERVICE FLOW PROCESSING FOR HEADEND CABLE MODEM - A method and apparatus of processing a multicast service flow for a headend cable modem is provided. | 09-22-2011 |
20130179933 | HEADEND DEVICE FOR CABLE NETWORK AND METHOD OF OPERATING HEADEND DEVICE - Disclosed is a headend device for a cable network and a method of operating the headend device. The headend device for a hybrid fiber coaxial (HFC)-based cable network may transmit a digital video data stream and an Internet Protocol (IP) data stream input using various input interface standards integratedly based on a frequency channel standard for the cable network to improve efficiency. | 07-11-2013 |
20140215530 | METHOD AND SYSTEM FOR TRANSMITTING BROADCAST AND DATA STREAM AND METHOD AND APPARATUS FOR CONVERTING BROADCAST AND DATA STREAM IN HFC-BASED CABLE NETWORK - A method for transmitting broadcast and data streams in an HFC-based cable network includes a first transmission step of a broadcast transmission apparatus sending broadcast and data service streams in an IP-based stream or RF signal form through an optical section up to a cell node that is a contact point between the optical section and a cable section of a cable network and a second transmission step of the cell node converting the broadcast and data service streams into one of RF signal, IP-based stream, and RF/IP convergence service stream forms depending on a service type of a subscriber terminal and sending the converted broadcast and data service streams to the subscriber terminal through the cable section. | 07-31-2014 |