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    APPARATUS AND METHOD FOR SOFT-DECISION DEMODULATING IN NON-SQUARE QUADRATURE AMPLITUDE MODULATION
    2.
    发明申请
    APPARATUS AND METHOD FOR SOFT-DECISION DEMODULATING IN NON-SQUARE QUADRATURE AMPLITUDE MODULATION 有权
    非平方公尺调制中软决策解调的装置和方法

    公开(公告)号：US20160337081A1

    公开(公告)日：2016-11-17

    申请号：US15151768

    申请日：2016-05-11

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Joon Young JUNG ,  Je Won LEE ,  Dong Joon CHOI ,  Nam Ho HUR

    IPC: H04L1/00 ,  H04L27/38

    CPC classification number: H04L27/38 ,  H04L1/0057

    Abstract: Disclosed are an apparatus and a method for soft-decision demodulating in non-square quadrature amplitude modulation. The apparatus includes: a signal receiving unit receiving a quadrature amplitude modulation (QAM) modulated signal at an m modulation degree at a transmitting side; a soft-decision bit calculating unit determining a soft-decision bit value by calculating log likelihood ratios (LLRs) for m bits of the received QAM modulated signal; and a signal decoding unit restoring the received QAM modulated signal based on the determined soft-decision bit value, in which the soft-decision bit calculating unit defines a log likelihood ratio calculation equation by approximating soft-decision boundary points of constellation points for m bits of non-square QAM having odd bits, respectively.

    Abstract translation: 公开了一种在非正交正交幅度调制中进行软判决解调的装置和方法。 该装置包括：信号接收单元，其在发送侧以m个调制度接收正交幅度调制（QAM）调制信号; 软判决比特计算单元，通过计算所接收的QAM调制信号的m比特的对数似然比（LLR）来确定软判决比特值; 以及信号解码单元，基于所确定的软判决比特值来恢复接收到的QAM调制信号，其中软判决比特计算单元通过近似m位的星座点的软判决边界点来定义对数似然比计算方程 分别具有奇数位的非正方形QAM。

    CHANNEL SWITCHING METHOD AND CHANNEL RECEPTION METHOD TO INCREASE SPECTRUM USE EFFICIENCY, AND CHANNEL SWITCHING APPARATUS AND CHANNEL RECEPTION APPARATUS USING THE SAME
    3.
    发明申请
    CHANNEL SWITCHING METHOD AND CHANNEL RECEPTION METHOD TO INCREASE SPECTRUM USE EFFICIENCY, AND CHANNEL SWITCHING APPARATUS AND CHANNEL RECEPTION APPARATUS USING THE SAME 审中-公开
    使用频谱切换方法和信道接收方法提高频谱使用效率，以及使用该信道的信道切换设备和信道接收设备

    公开(公告)号：US20160037534A1

    公开(公告)日：2016-02-04

    申请号：US14811377

    申请日：2015-07-28

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Joon Young JUNG ,  Dong Joon CHOI ,  Nam Ho HUR

    IPC: H04W72/04 ,  H04L29/06

    CPC classification number: H04L65/4076 ,  H04W72/005

    Abstract: Provided is a channel switching method and channel reception method to enhance spectrum use efficiency and a channel switching apparatus and channel reception apparatus using the same. The channel switching method may include extracting, based on received information associated with a virtual channel currently viewed by a user, broadcasting data on a corresponding virtual channel in a physical channel, determining communication data to be added to an idle frequency band in the physical channel including the extracted broadcasting data, and transmitting a transmission data stream generated based on communication data and broadcasting data included in the physical channel, wherein the physical channel comprises broadcasting data on a plurality of virtual channels and uses a predetermined frequency band.

    Abstract translation: 提供了一种提高频谱利用效率的信道切换方法和信道接收方法以及使用该方法的信道切换装置和信道接收装置。 信道切换方法可以包括基于与用户当前观看的虚拟频道相关联的接收到的信息来提取在物理信道中的对应虚拟信道上的广播数据，确定要添加到物理信道中的空闲频带的通信数据 包括提取的广播数据，以及发送基于包括在物理信道中的通信数据和广播数据而生成的传输数据流，其中物理信道包括在多个虚拟信道上广播数据并使用预定的频带。

    METHOD AND APPARATUS FOR INSERTING BROADCAST PROGRAM BY DETECTING AVAILABLE CHANNEL OVER HYBRID FIBER COAX NETWORK OR OPTICAL CABLE NETWORK
    4.
    发明申请
    METHOD AND APPARATUS FOR INSERTING BROADCAST PROGRAM BY DETECTING AVAILABLE CHANNEL OVER HYBRID FIBER COAX NETWORK OR OPTICAL CABLE NETWORK 有权
    通过检测混合光纤网络或光缆网络中的可用信道来插入广播节目的方法和装置

    公开(公告)号：US20130283331A1

    公开(公告)日：2013-10-24

    申请号：US13868674

    申请日：2013-04-23

    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

    Inventor： Yang Su KIM ,  Han Seung KOO ,  Jae Ho LEE ,  Sang Jung RA ,  Dong Joon CHOI ,  Nam Ho HUR

    IPC: H04N21/2385

    CPC classification number: H04N21/2385 ,  H04H20/06 ,  H04H60/41 ,  H04N21/2383 ,  H04N21/6118

    Abstract: An apparatus for combining a broadcasting channel may include a channel detector to detect a vacant Radio Frequency (RF) broadcasting channel used by a photoelectric converter that converts a first broadcast program as an optical signal to a first RF signal, a broadcast receiving interface to receive at least one second broadcast program, a broadcast modulator to generate a second RF signal by modulating the second broadcast program using the vacant RF broadcasting channel, and a channel combiner to combine a broadcasting channel used for the first RF signal and the vacant RF broadcasting channel.

    Abstract translation: 用于组合广播信道的装置可以包括：信道检测器，用于检测由光电转换器使用的空闲射频（RF）广播信道，其将作为光信号的第一广播节目转换为第一RF信号;广播接收接口，用于接收 至少一个第二广播节目，通过使用空闲RF广播频道调制第二广播节目来产生第二RF信号的广播调制器，以及组合用于第一RF信号的广播频道和空闲RF广播频道 。

    HEADEND DEVICE FOR CABLE NETWORK AND METHOD OF OPERATING HEADEND DEVICE
    5.
    发明申请
    HEADEND DEVICE FOR CABLE NETWORK AND METHOD OF OPERATING HEADEND DEVICE 审中-公开
    用于电缆网络的头部装置和操作头部装置的方法

    公开(公告)号：US20130179933A1

    公开(公告)日：2013-07-11

    申请号：US13734656

    申请日：2013-01-04

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Ho Sook LEE ,  Dong Joon CHOI ,  Nam Ho HUR

    IPC: H04N21/258

    CPC classification number: H04N21/258 ,  H04N21/2221 ,  H04N21/6118 ,  H04N21/6168 ,  H04N21/64322 ,  H04N21/64707

    Abstract: 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.

    Abstract translation: 公开了一种用于电缆网络的头端设备和操作头端设备的方法。 用于基于混合光纤同轴（HFC）的有线网络的前端设备可以基于用于有线网络的频率信道标准集成地传输使用各种输入接口标准输入的数字视频数据流和因特网协议（IP）数据流，以改善 效率。

    APPARATUS AND METHOD FOR BONDING BROADCAST CHANNEL
    6.
    发明申请
    APPARATUS AND METHOD FOR BONDING BROADCAST CHANNEL 审中-公开
    用于绑定广播通道的装置和方法

    公开(公告)号：US20130160069A1

    公开(公告)日：2013-06-20

    申请号：US13715574

    申请日：2012-12-14

    Applicant: Electronics and Telecommunications Research Institute

    Inventor： Woong Shik YOU ,  Dong Joon CHOI ,  Nam Ho HUR

    IPC: H04N21/61

    CPC classification number: H04N21/61 ,  H04N21/23614 ,  H04N21/2383

    Abstract: An apparatus for bonding a broadcast channel, including an encoder to output at least one broadcasting program in a form of a transport stream (TS) packet by encoding the at least one broadcasting program, a multiplexer to multiplex the TS packets by mixing the TS packets with signaling information, and a transmitter to transmit the multiplexed TS packet by distributing the multiplexed TS packet via bonded channels, and the transmitter transmits control packets to control the TS packets along with the TS packets through the bonded channels via which the TS packets is transmitted is provided.

    Abstract translation: 一种用于连接广播频道的装置，包括编码器，通过对至少一个广播节目进行编码，以传输流（TS）分组的形式输出至少一个广播节目;复用器，通过混合TS分组来复用TS分组 以及通过经由绑定信道分配经复用的TS分组来发送经复用的TS分组的发射机，并且发射机发送控制分组，以通过传输TS分组的绑定信道与TS分组一起控制TS分组 被提供。

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