公开(公告)号：US20200021805A1

公开(公告)日：2020-01-16

申请号：US16471071

申请日：2018-01-02

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hyun Suk KO ,  Sung Chang LIM ,  Jung Won KANG ,  Dong San JUN ,  Seung Hyun CHO ,  Jin Ho LEE ,  Ha Hyun LEE ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/11 ,  H04N19/159 ,  H04N19/46 ,  H04N19/176

Abstract: The present invention relates to an image encoding/decoding method and apparatus. The image decoding method according to the present invention may comprise constructing N MPM lists for a current block, wherein N is equal to or greater than 1, deriving an intra prediction mode of the current block based on the N MPM lists, and performing intra prediction for the current block based on the intra prediction mode.

公开(公告)号：US20190246103A1

公开(公告)日：2019-08-08

申请号：US16336264

申请日：2017-09-26

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong San JUN ,  Ha Hyun LEE ,  Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Jin Ho LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/109 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/91

CPC classification number: H04N19/109 ,  H04N19/117 ,  H04N19/119 ,  H04N19/132 ,  H04N19/172 ,  H04N19/174 ,  H04N19/176 ,  H04N19/182 ,  H04N19/513 ,  H04N19/86 ,  H04N19/91

Abstract: An image encoding method and an image decoding method are provided. The image decoding method includes deriving a temporal merge candidate from a co-located block of a current block, generating a merge candidate list of the current block based on the derived temporal merge candidate, and generating a prediction block of the current block based on the generated merge candidate list. The deriving a temporal merge candidate includes scaling a motion vector derived from the co-located block based on a POC difference value between the current block and a reference picture of the current block and a POC difference value between the co-located block and a reference picture of the co-located block, and modifying the scaled motion vector based on motion vector scaling information between a neighboring block of the current block and a co-located block of the neighboring block.

公开(公告)号：US20190238841A1

公开(公告)日：2019-08-01

申请号：US16342225

申请日：2017-10-24

Applicant: Electronics and Telecommunications Research Institute ,  Industry-University Cooperation Foundation Korea Aerospace University ,  Hanbat National University Industry-Academic Cooperation Foundation

Inventor： Jin Ho LEE ,  Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Ha Hyun LEE ,  Dong San JUN ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jae Gon KIM ,  Do Hyeon PARK ,  Jin Soo CHOI ,  Hae Chul CHOI

IPC: H04N19/11 ,  G06F17/18 ,  H04N19/159 ,  H04N19/176

CPC classification number: H04N19/11 ,  G06F17/18 ,  H04N19/105 ,  H04N19/117 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/159 ,  H04N19/174 ,  H04N19/176 ,  H04N19/513 ,  H04N19/80 ,  H04N19/91

Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator.

公开(公告)号：US20190215512A1

公开(公告)日：2019-07-11

申请号：US16336219

申请日：2017-09-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jin Ho LEE ,  Hyun Suk KO ,  Jung Won KANG ,  Sung Chang LIM ,  Ha Hyun LEE ,  Dong San JUN ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/105 ,  H04N19/176 ,  H04N19/186 ,  H04N19/119 ,  H04N19/11

CPC classification number: H04N19/105 ,  H04N19/11 ,  H04N19/117 ,  H04N19/119 ,  H04N19/172 ,  H04N19/176 ,  H04N19/186 ,  H04N19/51 ,  H04N19/70 ,  H04N19/80 ,  H04N19/91 ,  H04N19/96

Abstract: An image encoding/decoding method and apparatus for predicting a second color component block using a first color component block are provided. An image decoding method of the present invention comprises deriving a prediction parameter using the first color component block, and predicting the second color component block using the derived prediction parameter.

公开(公告)号：US20190191155A1

公开(公告)日：2019-06-20

申请号：US16099639

申请日：2017-06-15

Applicant: Electronics and Telecommunications Research Institute

Inventor： Hyun Suk KO ,  Jin Ho LEE ,  Sung Chang LIM ,  Jung Won KANG ,  Ha Hyun LEE ,  Dong San JUN ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/11 ,  H04N19/96 ,  H04N19/176 ,  H04N19/184

CPC classification number: H04N19/11 ,  H04N19/107 ,  H04N19/117 ,  H04N19/176 ,  H04N19/184 ,  H04N19/91 ,  H04N19/96

Abstract: The present invention relates to an intra prediction method and apparatus. The image decoding method according to the present invention may comprise decoding information on intra prediction; and generating a prediction block by performing intra prediction for a current block based on the information on intra prediction. The information on intra prediction may include information on an intra prediction mode, and the intra prediction mode may include a curved intra prediction mode.

公开(公告)号：US20190174136A1

公开(公告)日：2019-06-06

申请号：US16321173

申请日：2017-08-09

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong San JUN ,  Ha Hyun LEE ,  Jung Won KANG ,  Hyun Suk KO ,  Sung Chang LIM ,  Jin Ho LEE ,  Seung Hyun CHO ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/159 ,  H04N19/105 ,  H04N19/13 ,  H04N19/126 ,  H04N19/593 ,  H04N19/176

Abstract: The present invention relates to a method for encoding/decoding a video. To this end, the method for decoding a video may include: deriving a spatial merge candidate from at least one of spatial candidate blocks of a current block, deriving a temporal merge candidate from a co-located block of the current block, and generating a prediction block of the current block based on at least one of the derived spatial merge candidate and the derived temporal merge candidate, wherein a reference picture for the temporal merge candidate is selected based on a reference picture list of a current picture including the current block and a reference picture list of a co-located picture including the co-located block.

公开(公告)号：US20150326321A1

公开(公告)日：2015-11-12

申请号：US14698025

申请日：2015-04-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Seung Hyun CHO ,  Kyeong Hwan DOO ,  Hun Sik KANG ,  Jie Hyun LEE

IPC: H04B10/556 ,  H04L27/26

CPC classification number: H04B10/556 ,  H04B10/272 ,  H04B10/548 ,  H04L27/2626 ,  H04L27/2627

Abstract: Provided is an optical transmission apparatus and method for uplink transmission in an orthogonal frequency division multiple access-passive optical network (OFDMA-PON), wherein the optical transmission apparatus includes a digital signal processor to output a baseband orthogonal frequency division multiplexing (OFDM) signal, a tone generator to generate a dithering tone, a synthesizer to synthesize the dithering tone and the baseband OFDM signal, and an optical source to output an output light in which a spectrum width is increased to be greater than a spectrum width of a carrier light based on the baseband OFMD signal synthesized with the dithering tone.

Abstract translation: 提供了一种在正交频分多址无源光网络（OFDMA-PON）中的上行链路传输的光传输装置和方法，其中光传输装置包括数字信号处理器，用于输出基带正交频分复用（OFDM）信号 ，产生抖动音的乐音发生器，用于合成抖动音的合成器和基带OFDM信号;以及光源，用于将频谱宽度增加的输出光输出为大于载波的频谱宽度 基于用抖动音合成的基带OFMD信号。

公开(公告)号：US20140146884A1

公开(公告)日：2014-05-29

申请号：US13765263

申请日：2013-02-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Hyun CHO ,  Hyun Mi KIM ,  Seong Mo PARK ,  Ig Kyun KIM ,  Kyoung Seon SHIN ,  Kyung Jin BYUN

IPC: H04N7/26

CPC classification number: H04N19/50 ,  H04N19/103 ,  H04N19/119 ,  H04N19/147 ,  H04N19/176 ,  H04N19/96

Abstract: The present invention provides a fast prediction mode determination method of a video encoder that may remove an unnecessary operation of an encoder by selectively terminating early or omitting a splitting process and a pruning process based on a probability distribution of rate-distortion values, and thereby enables the encoder to quickly determine a prediction mode. The present invention may include a method that may adaptively change a termination and omission determination criterion of the splitting process and the pruning process based on a characteristic of an input image. When using the method provided by the present invention, reliability regarding the termination and omission determination of the splitting process and the pruning process may be set and thus, it is possible to adjust the tradeoff between a decrease in an operation amount and a quality degradation of the encoder.

Abstract translation: 本发明提供了一种视频编码器的快速预测模式确定方法，其可以通过基于速率失真值的概率分布来选择性地终止或省略分离处理和修剪过程来选择性地终止编码器的不必要操作，从而使能 编码器快速确定预测模式。 本发明可以包括可以基于输入图像的特性自适应地改变分割处理和修剪处理的终止和省略确定标准的方法。 当使用本发明提供的方法时，可以设置关于分割处理和修剪过程的终止和省略确定的可靠性，因此可以调整操作量的降低和质量劣化之间的权衡 编码器。

公开(公告)号：US20140044436A1

公开(公告)日：2014-02-13

申请号：US13962292

申请日：2013-08-08

Applicant: Electronics and Telecommunications Research Institute

Inventor： Jie Hyun LEE ,  Seung Hyun CHO ,  Kyeong Hwan DOO ,  Seung Il MYONG

IPC: H04B10/40

CPC classification number: H04B10/40 ,  H01S3/08059 ,  H01S5/02284 ,  H01S5/028 ,  H01S5/141

Abstract: An optical transmitter and an optical transceiver including the same are provided. The optical transmitter may include a semiconductor laser diode to output optical signals, a multilayer thin film filter to receive the optical signals and pass optical signals corresponding to a transmission wavelength band, and a concave lens to collect the optical signals passed through the multilayer thin film filter.

Abstract translation: 提供了一种光发射机和包括其的光收发器。 光发射机可以包括用于输出光信号的半导体激光二极管，用于接收光信号并通过对应于透射波段的光信号的多层薄膜滤光器和用于收集通过多层薄膜的光信号的凹透镜 过滤。

公开(公告)号：US20250133211A1

公开(公告)日：2025-04-24

申请号：US19002909

申请日：2024-12-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Seung Hyun CHO ,  Sung Chang LIM ,  Jung Won KANG ,  Hyun Suk KO ,  Jin Ho LEE ,  Ha Hyun LEE ,  Dong San JUN ,  Hui Yong KIM ,  Jin Soo CHOI

IPC: H04N19/129 ,  H04N19/105 ,  H04N19/11 ,  H04N19/119 ,  H04N19/13 ,  H04N19/132 ,  H04N19/159 ,  H04N19/18 ,  H04N19/513 ,  H04N19/91 ,  H04N19/96

Abstract: The present invention relates to a method for encoding and decoding an image. For this, a method for decoding an image may include: entropy-decoding a bitstream; determining a scanning unit and a scanning order of the transform coefficients of the current block; scanning and aligning the transform coefficients of the current block based on the determined scanning unit and scanning order; and performing inverse-transform for the aligned transform coefficients.