公开(公告)号：US11515902B2

公开(公告)日：2022-11-29

申请号：US17514849

申请日：2021-10-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang Rok Moon ,  Minkyu Sung ,  Eon-sang Kim ,  Won Kyoung Lee ,  Seung-Hyun Cho

IPC: H04B1/12 ,  H04B17/29

Abstract: Disclosed is a method and apparatus for phase error compensation having tolerance to a cyclic slip. The method includes determining first phase error candidates based on symbol phases of a first block of a received signal, determining an initial estimation error according to the first phase error candidates, determining second phase error candidates based on symbol phases of a second block of the received signal, determining a final estimation error according to the initial estimation error and the second phase error candidates, and compensating for a phase of the received signal according to the final estimation error.

公开(公告)号：US11284076B2

公开(公告)日：2022-03-22

申请号：US16494507

申请日：2018-03-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Jin-Ho Lee ,  Jung-Won Kang ,  Hyunsuk Ko ,  Sung-Chang Lim ,  Dong-San Jun ,  Ha-Hyun Lee ,  Seung-Hyun Cho ,  Hui-Yong Kim ,  Hae-Chul Choi ,  Dae-Hyeok Gwon ,  Jae-Gon Kim ,  A-Ram Back

IPC: H04N19/119 ,  H04N19/105 ,  H04N19/593 ,  H04N19/124 ,  H04N19/61 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

公开(公告)号：US20140341270A1

公开(公告)日：2014-11-20

申请号：US14264610

申请日：2014-04-29

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seong-Mo Park ,  Seung-Hyun Cho ,  Hyun-Mi Kim ,  Kyung-Jin Byun ,  Nak-Woong Eum

IPC: H04N19/11 ,  H04N19/176 ,  H04N19/196 ,  H04N19/167

CPC classification number: H04N19/557 ,  H04N19/109 ,  H04N19/119 ,  H04N19/139 ,  H04N19/176 ,  H04N19/96

Abstract: An apparatus and method for skipping fractional motion estimation (FME) in high efficiency video coding (HEVC) are disclosed. The apparatus includes a current sum of absolute differences (SAD) acquisition unit, a redundancy determination unit, and a motion estimation skip unit. The SAD acquisition unit acquires the SAD from an integer motion estimation (IME) unit when the IME unit performs IME on a coding tree block (CTB). The redundancy determination unit determines whether or not the CTB is an estimated redundant block using the current SAD. The motion estimation skip unit provides an FME unit with an FME skip signal of the CTB depending on whether or the CTB is an estimated redundant block.

Abstract translation: 公开了一种在高效率视频编码（HEVC）中跳过分数运动估计（FME）的装置和方法。 该装置包括绝对差的当前和（SAD）获取单元，冗余确定单元和运动估计跳过单元。 当IME单元在编码树块（CTB）上执行IME时，SAD获取单元从整数运动估计（IME）单元获取SAD。 冗余确定单元使用当前的SAD来确定CTB是否是估计的冗余块。 运动估计跳跃单元根据CTB是估计的冗余块还是提供具有CTB的FME跳过信号的FME单元。

公开(公告)号：US11917148B2

公开(公告)日：2024-02-27

申请号：US17667141

申请日：2022-02-08

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY ,  HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION

Inventor： Jin-Ho Lee ,  Jung-Won Kang ,  Hyunsuk Ko ,  Sung-Chang Lim ,  Dong-San Jun ,  Ha-Hyun Lee ,  Seung-Hyun Cho ,  Hui-Yong Kim ,  Hae-Chul Choi ,  Dae-Hyeok Gwon ,  Jae-Gon Kim ,  A-Ram Back

IPC: H04N19/61 ,  H04N19/105 ,  H04N19/119 ,  H04N19/124 ,  H04N19/593 ,  H04N19/176

CPC classification number: H04N19/119 ,  H04N19/105 ,  H04N19/124 ,  H04N19/593 ,  H04N19/61 ,  H04N19/176

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. In video encoding and decoding, multiple partition blocks are generated by splitting a target block. A prediction mode is derived for at least a part of the multiple partition blocks, among the multiple partition blocks, and prediction is performed on the multiple partition blocks based on the derived prediction mode. When prediction is performed on the partition blocks, information related to the target block may be used, and information related to an additional partition block, which is predicted prior to the partition block, may be used.

公开(公告)号：US11019355B2

公开(公告)日：2021-05-25

申请号：US16374601

申请日：2019-04-03

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Hyun Cho ,  Je-Won Kang ,  Na-Young Kim ,  Jung-Kyung Lee ,  Joo-Young Lee ,  Hyunsuk Ko ,  Youn-Hee Kim ,  Jong-Ho Kim ,  Jin-Wuk Seok ,  Dae-Yeol Lee ,  Woong Lim ,  Se-Yoon Jeong ,  Hui-Yong Kim ,  Jin-Soo Choi

IPC: H04N19/513 ,  G06N20/00 ,  H04N19/132 ,  H04N19/105

Abstract: An inter-prediction method and apparatus uses a reference frame generated based on deep learning. In the inter-prediction method and apparatus, a reference frame is selected, and a virtual reference frame is generated based on the selected reference frame. A reference picture list is configured to include the generated virtual reference frame, and inter prediction for a target block is performed based on the virtual reference frame. The virtual reference frame may be generated based on a deep-learning network architecture, and may be generated based on video interpolation and/or video extrapolation that use the selected reference frame.

公开(公告)号：US10673524B2

公开(公告)日：2020-06-02

申请号：US16190905

申请日：2018-11-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Hyun Cho ,  Joonyoung Kim ,  Minkyu Sung ,  Jong Hyun Lee

IPC: H04B10/00 ,  H04B10/08 ,  H04B17/00 ,  H04B10/06 ,  H04B10/079 ,  H04B10/29 ,  H04W24/08 ,  H04J14/02 ,  H04B10/2575 ,  H04W88/08

Abstract: An optical repeater performs an electrical-to-optical conversion based on a power level of an optical signal or an optical modulation index (OMI) required by a radio unit or a host unit connected to the optical repeater. Further, the optical repeater performs an optical-to-electrical conversion based on a power level of a radio frequency (RF) signal required by the radio unit or the host unit connected to the optical repeater.

公开(公告)号：US09246628B2

公开(公告)日：2016-01-26

申请号：US13728089

申请日：2012-12-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Hyun Cho ,  Jie Hyun Lee ,  Seung Il Myong ,  Sang Soo Lee ,  Jong Hyun Lee ,  Eui Suk Jung ,  Kwang Ok Kim

IPC: H04J14/02

CPC classification number: H04J14/0278 ,  H04J14/02 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J14/0298 ,  H04J2014/0253

Abstract: Provided is a hybrid passive optical network (PON) system. The hybrid PON system of wavelength division multiplexing (WDM)/time division multiplexing (TDM) may include an optical line terminal (OLT) and an optical network unit (ONU). The OLT and the ONU may transmit a signal based on wavelength reuse using a seed light source and a reflective modulator. The light source may include a seed light source having a single wavelength, two seed light sources having different wavelength bands, and a light source having a wavelength tunable characteristic.

Abstract translation: 提供了一种混合无源光网络（PON）系统。 波分复用（WDM）/时分复用（TDM）的混合PON系统可以包括光线路终端（OLT）和光网络单元（ONU）。 OLT和ONU可以使用种子光源和反射调制器来发射基于波长重用的信号。 光源可以包括具有单个波长的种子光源，具有不同波长带的两个种子光源和具有波长可调特性的光源。

公开(公告)号：US09225570B2

公开(公告)日：2015-12-29

申请号：US14082902

申请日：2013-11-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong-Hwan Doo ,  Hak-Jeon Bang ,  Seung-Il Myong ,  Seung-Hyun Cho ,  Jie-Hyun Lee

IPC: H04J14/02 ,  H04L27/26 ,  H04L5/00 ,  H04Q11/00

CPC classification number: H04L27/2608 ,  H04L5/0039 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/2697 ,  H04Q11/0067

Abstract: There are provided a method of allocating upstream bandwidth resources and a method of transmitting upstream data in an orthogonal frequency division multiple access-open optical subscriber network. The method of allocating an upstream bandwidth resource according to an embodiment of the invention includes receiving queue status information from each optical network unit (ONU), and allocating an upstream bandwidth by providing to each ONU a 2-D upstream bandwidth map on a subcarrier-time resource through a frame synchronized at constant cycles, based on the queue status information received from each ONU.

Abstract translation: 提供了一种分配上行带宽资源的方法和在正交频分多址接入开放光用户网络中发送上行数据的方法。 根据本发明实施例的分配上行带宽资源的方法包括从每个光网络单元（ONU）接收队列状态信息，并且通过向每个ONU提供子载波上的带宽映射的分配上行带宽， 基于从每个ONU接收的队列状态信息，通过以恒定周期同步的帧的时间资源。

公开(公告)号：US09219567B2

公开(公告)日：2015-12-22

申请号：US13729638

申请日：2012-12-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwang Ok Kim ,  Seung-Hyun Cho ,  Jie Hyun Lee ,  Seung Il Myong ,  Sang Soo Lee ,  Jong Hyun Lee

IPC: H04J14/02 ,  H04J4/00 ,  H04J14/08 ,  H04Q11/00

CPC classification number: H04J14/08 ,  H04Q11/0005 ,  H04Q2011/0064

Abstract: A converged passive optical network (CPON) and a data transmission method are disclosed. The CPON is a combination of a time division multiple access-passive optical network (TDMA-PON) and an orthogonal frequency division multiple access-passive optical network (OFDMA-PON) and is able to dynamically controlling a bandwidth for upstream signal transmission through allocation of multiple subcarriers to each single optical network unit (ONU).

Abstract translation: 公开了一种融合无源光网络（CPON）和数据传输方法。 CPON是时分多址无源光网络（TDMA-PON）和正交频分多址无源光网络（OFDMA-PON）的组合，能够通过分配动态地控制上行信号传输的带宽 的多个子载波到每个单个光网络单元（ONU）。

公开(公告)号：US09197351B2

公开(公告)日：2015-11-24

申请号：US14082796

申请日：2013-11-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kyeong-Hwan Doo ,  Seung-Il Myong ,  Han-Hyub Lee ,  Seung-Hyun Cho ,  Jie-Hyun Lee ,  Sang-Soo Lee

IPC: H04B10/50 ,  H04B10/60 ,  H04B10/2587 ,  H04J3/16 ,  H04J14/02

CPC classification number: H04J14/0227 ,  H04J3/1694 ,  H04J14/0246 ,  H04J14/025

Abstract: Provided is a method of selecting a wavelength of an optical network unit including selecting a pre-loaded default wavelength as an available wavelength candidate or the wavelength that has been changed when a preset wavelength changing condition is satisfied as the available wavelength candidate, acquiring frame synchronization for a downstream signal having the same wavelength as the selected available wavelength candidate, and transmitting a registration request message to an optical line terminal (OLT) from which the downstream signal has been transmitted when the frame synchronization is acquired, assigning the available wavelength candidate to an available wavelength used for communication with the OLT and registering the terminal in the OLT when a registration allowance message is received from the OLT.

Abstract translation: 提供了一种选择光网络单元的波长的方法，包括选择预先加载的默认波长作为可用波长候选，或当满足预设波长变化条件时已经改变的波长作为可用波长候选，获取帧同步 对于与选择的可用波长候选具有相同波长的下行信号，并且当获取帧同步时，向已经发送了下行信号的光线路终端（OLT）发送注册请求消息，将可用波长候选分配给 用于与OLT通信的可用波长，并且当从OLT接收到注册允许消息时，在OLT中注册终端。