公开(公告)号：US20170126451A1

公开(公告)日：2017-05-04

申请号：US15287575

申请日：2016-10-06

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  Kyungpook National University Industry-Academic Cooperation Foundation

Inventor： Young Su KIM ,  Dong Seog HAN ,  Myung Chul PARK ,  Hyoung Soo LIM ,  Nam Ho HUR

IPC: H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2613 ,  H04L5/0048 ,  H04L27/2688

Abstract: An exemplary embodiment of the present invention provides a pilot signal generating apparatus, including: a changed amount estimating unit which estimates a changed amount of a pilot symbol due to interference of a data symbol which is adjacent to a predefined position of the pilot symbol; and a symbol generating unit which generates the pilot symbol in consideration of the estimated changed amount.

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。

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。

公开(公告)号：US20140211861A1

公开(公告)日：2014-07-31

申请号：US14163982

申请日：2014-01-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gwang Soon LEE ,  Sung Ik PARK ,  Heung Mook KIM ,  Nam Ho HUR

IPC: H04N19/40 ,  H04N19/89

CPC classification number: H04N19/33 ,  H04N19/89

Abstract: A method of transmitting a high definition (HD) image and an ultra high definition (UHD) image, the method including obtaining a first HD image by down-scaling an original UHD image, obtaining at least one of a second HD image and a half-resolution UHD image by down-scaling the original UHD image, encoding the first HD image, encoding at least one of the second HD image and the half-resolution UHD image, generating a first transmission stream by multiplexing and synchronizing the encoded first HD image, generating a second transmission stream by multiplexing and synchronizing at least one of the encoded second HD image and the encoded half-resolution UHD image, transmitting the first transmission stream via a first transmission channel, and transmitting the second transmission stream via a second transmission channel differing from the first transmission channel is provided.

Abstract translation: 一种发送高分辨率（HD）图像和超高分辨率（UHD）图像的方法，所述方法包括：通过对原始UHD图像进行缩小来获得第一HD图像，获得第二HD图像和第二HD图像中的至少一个 通过缩小原始UHD图像，对第一HD图像进行编码，对第二HD图像和半分辨率UHD图像中的至少一个进行编码，通过多路复用和同步编码的第一HD图像来生成第一传输流， 通过多路复用和同步编码的第二HD图像和编码的半分辨率UHD图像中的至少一个来生成第二传输流，经由第一传输信道发送第一传输流，以及经由第二传输信道发送第二传输流 与第一传输信道不同。

公开(公告)号：US20140165125A1

公开(公告)日：2014-06-12

申请号：US14103169

申请日：2013-12-11

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gwang Soon LEE ,  Hyun LEE ,  Won Sik CHEONG ,  Nam Ho HUR

IPC: H04N21/2365 ,  H04N21/2389 ,  H04N13/00

CPC classification number: H04N21/2365 ,  H04N13/194 ,  H04N21/2389 ,  H04N21/431

Abstract: A broadcasting transmitting apparatus of providing a multi-picture may include a multi-picture generator configured to divide an acquired video into a first video and a second video; a first video encoder configured to encode the first video; a second video encoder configured to encode the second video; a multiplexer configured to multiplex the first and second videos to a single stream video; and a transmitter configured to modulate the multiplexed single stream video to transmit the modulated single stream video to a receiving apparatus through a broadcasting network.

Abstract translation: 提供多画面的广播发送装置可以包括被配置为将所获取的视频划分为第一视频和第二视频的多画面生成器; 被配置为对所述第一视频进行编码的第一视频编码器; 被配置为对所述第二视频进行编码的第二视频编码器; 多路复用器，被配置为将第一和第二视频复用到单个流视频; 以及发射机，被配置为调制多路复用的单流视频，以通过广播网络将调制的单流视频传输到接收设备。

公开(公告)号：US20140112395A1

公开(公告)日：2014-04-24

申请号：US14059913

申请日：2013-10-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Gwang Soon LEE ,  Kug Jin YUN ,  Jin Young LEE ,  Hyun Jeong YIM ,  Eung Don LEE ,  Won Sik CHEONG ,  Nam Ho HUR

IPC: H04N19/89

CPC classification number: H04N19/44 ,  H04N19/597 ,  H04N21/23406 ,  H04N21/242 ,  H04N21/8451

Abstract: Disclosed is a transport device in a video system which uses a hybrid video codec. The transport device includes a first video encoder which encodes a first video using a first video codec, a second video encoder which encodes a second video using a second video codec, and a delay buffer for synchronizing a delay time for the first video and the second video, based on a buffer size of if a first transport stream system target decoder (T-STD) stipulated in the first video encoder and a buffer size of a second T-STD stipulated in the second video encoder.

Abstract translation: 公开了使用混合视频编解码器的视频系统中的传输设备。 传输设备包括使用第一视频编解码器对第一视频进行编码的第一视频编码器，使用第二视频编解码器对第二视频进行编码的第二视频编码器以及用于同步第一视频和第二视频编码器的延迟时间的延迟缓冲器 视频，基于第一视频编码器中规定的第一传输流系统目标解码器（T-STD）的缓冲器大小和第二视频编码器中规定的第二T-STD的缓冲器大小。

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 。

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。

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。

公开(公告)号：US20250151076A1

公开(公告)日：2025-05-08

申请号：US19017096

申请日：2025-01-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoi Yoon JUNG ,  Sung Ik PARK ,  Nam Ho HUR ,  Heung Mook KIM ,  Dong Joon CHOI

IPC: H04W72/23 ,  H04W74/02

Abstract: An operation method of a terminal in a communication system may comprise: receiving downlink control information (DCI) for scheduling uplink transmission from a base station; identifying a communication node initiating a channel occupancy time associated with the uplink transmission based on a channel access parameter included in the DCI; and performing the uplink transmission scheduled by the DCI within the channel occupancy time initiated by the communication node, wherein the communication node is the terminal or the base station.