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    Demultiplexing apparatus, multiplexing apparatus, and multi-channel transmission and reception method using the same
    11.
    发明授权
    Demultiplexing apparatus, multiplexing apparatus, and multi-channel transmission and reception method using the same 有权
    解复用装置，复用装置和使用其的多信道发送和接收方法

    公开(公告)号：US09232029B2

    公开(公告)日：2016-01-05

    申请号：US14085207

    申请日：2013-11-20

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Joon Young Jung ,  Dong Joon Choi ,  Nam Ho Hur

    IPC: H04L29/06 ,  H04L25/14 ,  H04N21/236 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/61 ,  H04N21/8547

    CPC classification number: H04L69/22 ,  H04L25/14 ,  H04L69/14 ,  H04N21/236 ,  H04N21/2381 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/6118 ,  H04N21/8547

    Abstract: A demultiplexing apparatus, a multiplexing apparatus, and a multi-channel transmission and reception method using the same are provided. The demultiplexing apparatus includes a broadcasting data reception unit for separating a broadcasting data stream into N input packets, an output packet generation unit for generating (N+1) output packets by connecting a pre-header, including a field for multi-channel transmission, with each of the N input packets, and a packet distribution unit for distributing the (N+1) output packets over at least two channels. The multiplexing apparatus includes a packet restoration unit for detecting first field information for restoration and second field information for synchronization from each of pre-headers included in (N+1) output packets received through at least two channels and generating N restoration packets using the first field information and an output synchronization unit for performing output timing synchronization between the N restoration packets using the second field information.

    Abstract translation: 提供了解复用装置，多路复用装置和使用该解复用装置的多信道发送和接收方法。 解复用装置包括：广播数据接收单元，用于将广播数据流分离成N个输入分组;输出分组生成单元，用于通过连接包括用于多信道传输的字段的预标题来生成（N + 1）个输出分组; 与N个输入分组中的每一个分组，以及用于在至少两个信道上分发（N + 1）个输出分组的分组分发单元。 复用装置包括：分组恢复单元，用于从包括在通过至少两个信道接收的（N + 1）个输出分组中的每个预标题检测用于恢复的第一场信息和用于同步的第二场信息，并且使用第一 场信息和输出同步单元，用于使用第二场信息来执行N个恢复分组之间的输出定时同步。

    METHOD AND APPARATUS FOR COMPENSATING FOR VARIABLE SYMBOL TIMING USING CYCLIC PREFIX IN NON-SYNCHRONIZED OFDM SYSTEM
    12.
    发明申请
    METHOD AND APPARATUS FOR COMPENSATING FOR VARIABLE SYMBOL TIMING USING CYCLIC PREFIX IN NON-SYNCHRONIZED OFDM SYSTEM 有权
    在非同步OFDM系统中使用循环前缀来补偿可变符号时序的方法和装置

    公开(公告)号：US20140286468A1

    公开(公告)日：2014-09-25

    申请号：US14097440

    申请日：2013-12-05

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Jae Ho LEE ,  Yang Su Kim ,  Sang Jung Ra ,  Han Seung Koo ,  Dong Joon Choi ,  Nam Ho Hur

    IPC: H04L7/00

    CPC classification number: H04L7/0079 ,  H04L27/2656 ,  H04L27/2663 ,  H04L27/2678

    Abstract: Disclosed are a method and apparatus for estimating symbol timing in a non-synchronized OFDM system. The present invention includes synchronizing a frame of a received signal, estimating the symbol timing of each symbol of the frame based on the synchronization, compensating for the symbol timing using a phase difference attributable to a Symbol Timing Offset (STO), variably changing within a Cyclic Prefix (CP) interval due to the frequency offset of a sampling clock and thermal noise, and performing channel equalization using a preamble based on output including corrected phase rotation.

    Abstract translation: 公开了一种在非同步OFDM系统中估计符号定时的方法和装置。 本发明包括使接收信号的帧同步，基于同步来估计帧的每个符号的符号定时，使用归因于符号定时偏移（STO）的相位差来补偿符号定时，该相位差可在一个 由于采样时钟和热噪声的频率偏移导致的循环前缀（CP）间隔，并且使用基于包括校正相位旋转的输出的前导码来执行信道均衡。

    Method and system for transmitting broadcast and data stream and method and apparatus for converting broadcast and data stream in HFC-based cable network
    16.
    发明授权
    Method and system for transmitting broadcast and data stream and method and apparatus for converting broadcast and data stream in HFC-based cable network 有权
    用于传输广播和数据流的方法和系统，以及用于在基于HFC的有线网络中转换广播和数据流的方法和装置

    公开(公告)号：US09167309B2

    公开(公告)日：2015-10-20

    申请号：US13957134

    申请日：2013-08-01

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Ho Sook Lee ,  Dong Joon Choi ,  Nam Ho Hur

    IPC: H04N7/16 ,  H04N7/173 ,  H04N21/61 ,  H04L12/28 ,  H04N21/239 ,  H04N21/238

    CPC classification number: H04N21/6131 ,  H04L12/2801 ,  H04N21/238 ,  H04N21/239 ,  H04N21/6106 ,  H04N21/6125

    Abstract: 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.

    Abstract translation: 一种用于在基于HFC的有线网络中发送广播和数据流的方法包括：广播传输设备的第一传输步骤，其以基于IP的流或RF信号形式通过光学部分发送广播和数据业务流，直到单元节点 即光纤部分和电缆网络的电缆部分之间的接触点，并且小区节点的第二传输步骤将广播和数据业务流转换成RF信号，基于IP的流和RF / IP收敛服务之一 流形式取决于用户终端的服务类型，并通过电缆部分将转换的广播和数据业务流发送给用户终端。

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