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1.发明授权公开(公告)号：US11609474B2
公开(公告)日：2023-03-21
申请号：US17496684
申请日：2021-10-07
Inventor： Won Kyoung Lee , Heuk Park , Seung-Hyun Cho
IPC: G02F1/21 , G02F1/225 , H04B10/516 , H04B10/114
Abstract: Disclosed are a terahertz signal generation apparatus and a terahertz signal generation method using the same. The terahertz signal generation apparatus includes first and second resonators configured to respectively output an optical signal of a first resonant frequency and an optical signal of a second resonant frequency from an optical signal input through a gain medium, an optical modulator configured to optically modulate the output optical signal of the second resonant frequency, an optical combiner configured to combine the CW optical signal of the first resonant frequency and the modulated optical signal of the second resonant frequency, and a signal generator configured to generate a terahertz signal using heterodyne beating between the CW optical signal of the first resonant frequency and the modulated optical signal of the second resonant frequency, wherein the first resonant frequency and the second resonant frequency are processed to have a predetermined frequency difference.
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公开(公告)号：US11477468B2
公开(公告)日：2022-10-18
申请号：US16760609
申请日：2018-10-30
Inventor： Joo-Young Lee , Seung-Hyun Cho , Youn-Hee Kim , Jin-Wuk Seok , Woong Lim , Jong-Ho Kim , Dae-Yeol Lee , Se-Yoon Jeong , Hui-Yong Kim , Jin-Soo Choi
IPC: H04N7/12 , H04N19/42 , H04N19/136 , G06N3/04 , G06N3/08
Abstract: A method and apparatus for image compression using a latent variable are provided. The multiple components of the latent variable may be sorted in order of importance. Through sorting, when the feature information of only some of the multiple components is used, the quality of a reconstructed image may be improved. In order to generate a latent variable, the components of which are sorted in order of importance, learning may be performed in various manners. Also, less important information may be eliminated from the latent variable, and processing, such as quantization, may be applied to the latent variable. Through elimination and processing, the amount of data for the latent variable may be reduced.
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公开(公告)号：US11166014B2
公开(公告)日：2021-11-02
申请号：US16772443
申请日：2018-12-13
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 , H04N19/159 , H04N19/176 , 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.
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公开(公告)号：US10560196B2
公开(公告)日：2020-02-11
申请号：US16197793
申请日：2018-11-21
Inventor： Joonyoung Kim , Minkyu Sung , Jong Hyun Lee , Seung-Hyun Cho
IPC: H04B10/58 , H04B10/516 , H04B10/2575 , H04B10/60
Abstract: A method and apparatus for adjusting a modulation index of an analog optical signal using an interference phenomenon of a coherent light, the method including dividing an analog optical signal for a first path and a second path, extracting an optical carrier from an analog optical signal divided for the first path, controlling an intensity and a phase of the optical carrier, and controlling a modulation index of the analog optical signal by combining an analog optical signal divided for the second path and the optical carrier of which the intensity and the phase are controlled.
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公开(公告)号：US11663476B2
公开(公告)日：2023-05-30
申请号：US16772557
申请日：2018-12-13
Inventor： Seung-Hyun Cho , Youn-Hee Kim , Jin-Wuk Seok , Joo-Young Lee , Woong Lim , Jong-Ho Kim , Dae-Yeol Lee , Se-Yoon Jeong , Hui-Yong Kim , Jin-Soo Choi , Je-Won Kang
IPC: G06V10/75 , G06N3/08 , G06N3/04 , G06V10/82 , G06F18/214
CPC classification number: G06V10/751 , G06F18/214 , G06N3/04 , G06N3/08 , G06V10/82
Abstract: Disclosed herein are a method and apparatus for compressing learning parameters for training of a deep-learning model and transmitting the compressed parameters in a distributed processing environment. Multiple electronic devices in the distributed processing system perform training of a neural network. By performing training, parameters are updated. The electronic device may share the updated parameter thereof with additional electronic devices. In order to efficiently share the parameter, the residual of the parameter is provided to the additional electronic devices. When the residual of the parameter is provided, the additional electronic devices update the parameter using the residual of the parameter.
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Patent Agency Ranking
公开(公告)号：US11503286B2
公开(公告)日：2022-11-15
申请号：US16461943
申请日：2017-11-28
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY
Inventor： Sung-Chang Lim , Jung-Won Kang , Hyunsuk Ko , Jin-Ho Lee , Ha-Hyun Lee , Dong-San Jun , Seung-Hyun Cho , Hui-Yong Kim , Yung-Lyul Lee , Jun-Woo Choi , Jin-Soo Choi , Nam-Uk Kim , Myung-Jun Kim
IPC: H04N19/00 , H04N19/117 , H04N19/132 , H04N19/44 , H04N19/80 , H04N19/70 , H04N19/513 , H04N19/19 , H04N19/122 , H04N19/176
Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus, and more particularly, a method and apparatus for performing filtering in video encoding and decoding. An encoding apparatus may perform filtering on a target, and may generate filtering information indicating whether filtering has been performed on the target. Further, the encoding apparatus may generate a bitstream including filtering information. A decoding apparatus may determine, based on filtering information, whether to perform filtering on a target, and may perform filtering on the target. The decoding apparatus may receive filtering information from the encoding apparatus through a bitstream or may derive filtering information using additional information.
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公开(公告)号：US11412225B2
公开(公告)日：2022-08-09
申请号：US16585658
申请日：2019-09-27
Inventor： Joo-Young Lee , Seung-Hyun Cho , Seung-Kwon Beack , Hyunsuk Ko , Youn-Hee Kim , Jong-Ho Kim , Jin-Wuk Seok , Woong Lim , Se-Yoon Jeong , Hui-Yong Kim , Jin-Soo Choi
IPC: H04N19/13 , H04N19/184 , H04N19/196 , H04N19/149
Abstract: Disclosed herein is a context-adaptive entropy model for end-to-end optimized image compression. The entropy model exploits two types of contexts. The two types of contexts are a bit-consuming context and a bit-free context, respectively, and these contexts are classified depending on the corresponding context requires the allocation of additional bits. Based on these contexts, the entropy model may more accurately estimate the distribution of each latent representation using a more generalized form of entropy models, thus improving compression performance.
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公开(公告)号：US10805021B2
公开(公告)日：2020-10-13
申请号：US16529929
申请日：2019-08-02
Inventor： Minkyu Sung , Joonyoung Kim , Jong Hyun Lee , Seung-Hyun Cho
IPC: H04B10/079 , H04B17/336 , H04B10/2575 , H04B10/114
Abstract: A transmission performance monitoring method for monitoring a transmission performance based on an analog optical link and an apparatus performing the method. The transmission performance monitoring method and apparatus centrally monitor an RF signal transmission performance in an analog optical link-based mobile haul or indoor distributed antenna system.
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9.发明授权Apparatus and method for skipping fractional motion estimation in high efficiency video coding 有权用于在高效率视频编码中跳过分数运动估计的装置和方法公开(公告)号：US09398309B2
公开(公告)日：2016-07-19
申请号：US14264610
申请日：2014-04-29
Inventor： Seong-Mo Park , Seung-Hyun Cho , Hyun-Mi Kim , Kyung-Jin Byun , Nak-Woong Eum
IPC: H04N19/51 , H04N19/557 , H04N19/176 , H04N19/139 , H04N19/119 , H04N19/96 , H04N19/109
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跃单元。 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。
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10.发明授权公开(公告)号：US09191116B2
公开(公告)日：2015-11-17
申请号：US14050465
申请日：2013-10-10
Inventor： Seung-Hyun Cho , Seung-Il Myong , Kyeong-Hwan Doo , Jie-Hyun Lee , Sang-Soo Lee , Jong-Hyun Lee
IPC: H04J14/02 , H04B10/27 , H04B10/548 , H04L27/26
CPC classification number: H04B10/27 , H04B10/548 , H04L27/2649 , H04L27/2697
Abstract: An orthogonal frequency division multiple access-passive optical network including a plurality of optical network units each configured to generate orthogonal frequency division multiplexed signals, which are allocated thereto, based on a central frequency for frequency division multiplexing that is allocated in advance, and to use the generated signals in upstream transmission.
Abstract translation: 一种正交频分多址无源光网络，包括多个光网络单元，每个光网络单元被配置为基于预先分配的用于频分复用的中心频率而分配给它们的正交频分复用信号，并且使用 在上行传输中产生的信号。
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