公开(公告)号：US20230116500A1

公开(公告)日：2023-04-13

申请号：US17547843

申请日：2021-12-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sooyeon KIM ,  Seung Hwan KIM ,  Seung-Hyun CHO

IPC: H03B5/02

Abstract: Disclosed is a signal combining and distribution network apparatus including multi-array circuits. The signal combining and distribution network apparatus includes multi-array circuits each including a plurality of oscillators, and 2-terminal networks a arranged between the oscillators and including a slow wave structure or a coupled line filter, and 2-terminal networks c arranged between the multi-array circuits and including a slow wave structure or a coupled line filter.

公开(公告)号：US20220247439A1

公开(公告)日：2022-08-04

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：US20210136416A1

公开(公告)日：2021-05-06

申请号：US16768054

申请日：2018-11-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Youn-Hee KIM ,  Hui-Yong KIM ,  Seung-Hyun CHO ,  Jin-Wuk SEOK ,  Joo-Young LEE ,  Woong LIM ,  Jong-Ho KIM ,  Dae-Yeol LEE ,  Se-Yoon JEONG ,  Jin-Soo CHOI

IPC: H04N19/61 ,  H04N19/105 ,  H04N19/176 ,  G06N3/08

Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. A transformed block is generated by performing a first transformation that uses a prediction block for a target block. A reconstructed block for the target block is generated by performing a second transformation that uses the transformed block. The prediction block may be a block present in a reference image, or a reconstructed block present in a target image. The first transformation and the second transformation may be respectively performed by neural networks. Since each transformation is automatically performed by the corresponding neural network, information required for a transformation may be excluded from a bitstream.

公开(公告)号：US20210084290A1

公开(公告)日：2021-03-18

申请号：US16772443

申请日：2018-12-13

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Hyun CHO ,  Joo-Young LEE ,  Youn-Hee KIM ,  Jin-Wuk SEOK ,  Woong LIM ,  Jong-Ho KIM ,  Dae-Yeol LEE ,  Se-Yoon JEONG ,  Hui-Yong KIM ,  Jin-Soo CHOI

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/159 ,  H04N19/85

Abstract: Disclosed herein are a method and apparatus for video decoding and a method and apparatus for video encoding. A prediction block for a target block is generated by predicting the target block using a prediction network, and a reconstructed block for the target block is generated based on the prediction block and a reconstructed residual block. The prediction network includes an intra-prediction network and an inter-prediction network and uses a spatial reference block and/or a temporal reference block when it performs prediction. For learning in the prediction network, a loss function is defined, and learning in the prediction network is performed based on the loss function.

公开(公告)号：US20190306526A1

公开(公告)日：2019-10-03

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 ,  H04N19/105 ,  H04N19/132 ,  G06N20/00

Abstract: Disclosed herein are an inter-prediction method and apparatus using 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：US20190165858A1

公开(公告)日：2019-05-30

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: H04B10/079 ,  H04B10/29 ,  H04J14/02 ,  H04W24/08

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：US20160227243A1

公开(公告)日：2016-08-04

申请号：US15013280

申请日：2016-02-02

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung-Hyun CHO

IPC: H04N19/593 ,  H04N19/176 ,  H04N19/119

CPC classification number: H04N19/593 ,  H04N19/107 ,  H04N19/119 ,  H04N19/159 ,  H04N19/176

Abstract: A video encoding apparatus and method is provided. The video encoding apparatus includes a processor configured to encode video data according to a program, and a memory configured to store the program. The program performs intra prediction on a block of the video data, determines whether an optimum prediction method according to the intra prediction is a block non-division method, performs inter prediction according to a block division method corresponding to a prediction mode group in which a prediction mode of the block according to the intra prediction is included when the optimum prediction method is the block non-division method, selects a method in which an error is smallest among the block division methods applied in the inter prediction as an optimum division method, performs encoding according to the optimum division method.

Abstract translation: 提供了一种视频编码装置和方法。 视频编码装置包括被配置为根据程序对视频数据进行编码的处理器和被配置为存储该程序的存储器。 程序对视频数据的块执行帧内预测，​​确定根据帧内预测的最佳预测方法是否是块非分割方法，根据与预测模式组对应的块分割方法来执行帧间预测，其中， 当最优预测方法是块非分割方法时，包括根据帧内预测的块的预测模式，选择在帧间预测中应用的块分割方法中的误差最小的方法作为最佳分割方法， 根据最佳分割方法进行编码。

公开(公告)号：US20140153928A1

公开(公告)日：2014-06-05

申请号：US14096650

申请日：2013-12-04

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jea Hoon YU ,  Seung-Hyun CHO ,  Tae Il KIM ,  Jeong-Dong RYOO ,  Tae Whan YOO ,  Bheom Soon JOO ,  Jong Hyun LEE ,  Bong Tae KIM

IPC: H04B10/11

CPC classification number: H04B10/1129

Abstract: In a wireless optical communication system in which communication is performed based on a free space and a plurality of the communication apparatuses are arranged in a ring form around a central office terminal (COT), the communication apparatus monitors optical signals received in a first direction or in a second direction opposite to the first direction, and selects a first path through which the optical signals in the first direction are received and a second path through which the optical signals in the second direction are received. The communication apparatus converts an optical signal having a predetermined unique wavelength from among the optical signals received through the selected path into a signal of a frequency domain having a plurality of subcarriers, and obtains packet data mapped to each of the subcarriers.

Abstract translation: 在基于自由空间进行通信并且多个通信装置以环形方式布置在中心局终端（COT）周围的无线光通信系统中，通信装置监视沿第一方向接收的光信号， 在与第一方向相反的第二方向上，选择接收第一方向的光信号的第一路径和接收第二方向的光信号的第二路径。 通信装置将从所选择的路径接收的光信号中具有预定唯一波长的光信号转换为具有多个子载波的频域的信号，并获得映射到每个副载波的分组数据。

公开(公告)号：US20130170837A1

公开(公告)日：2013-07-04

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: H04J14/08

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：US20240178916A1

公开(公告)日：2024-05-30

申请号：US18515598

申请日：2023-11-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung-Hyun CHO ,  Joon Ki LEE

IPC: H04B10/112 ,  H04B10/03

CPC classification number: H04B10/112 ,  H04B10/03

Abstract: Disclosed are a radio access network (RAN) equipment and communication equipment for performing photonics-based terahertz wireless communication. The RAN equipment includes a radio unit (RU), a distributed unit (DU), and a central unit (CU), wherein the RU and the DU are configured to transmit and/or receive data through photonics-based terahertz wireless communication, and the DU and the CU are configured to transmit and/or receive data through photonics-based terahertz wireless communication.