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11.发明授权公开(公告)号：US11825077B2
公开(公告)日：2023-11-21
申请号：US17724818
申请日：2022-04-20
Applicant: Electronics and Telecommunications Research Institute , University-Industry Cooperation Group of Kyung Hee University
Inventor： Jung Won Kang , Hyun Suk Ko , Sung Chang Lim , Jin Ho Lee , Ha Hyun Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi , Gwang Hoon Park , Tae Hyun Kim , Dae Young Lee
IPC: H04N19/70 , H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/52
CPC classification number: H04N19/105 , H04N19/117 , H04N19/132 , H04N19/159 , H04N19/172 , H04N19/176 , H04N19/182 , H04N19/46 , H04N19/52
Abstract: An image encoding/decoding method and apparatus are provided. An image encoding method performed by an image encoding apparatus may comprise determining an intra-prediction mode of a current block, configuring a reference sample of intra prediction by using at least one of a neighbor pixel of the current block in a current picture and a pixel of a reference picture, and performing intra prediction for the current block based on the intra-prediction mode and the reference sample.
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12.发明授权公开(公告)号：US11805247B2
公开(公告)日：2023-10-31
申请号：US17401424
申请日：2021-08-13
Inventor： Seung Hyun Cho , Jung Won Kang , Sung Chang Lim , Hyun Suk Ko , Dong San Jun , Jin Ho Lee , Ha Hyun Lee , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/11 , H04N19/105 , H04N19/176 , H04N19/96 , H04N19/119
CPC classification number: H04N19/11 , H04N19/105 , H04N19/119 , H04N19/176 , H04N19/96
Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra-prediction mode for a current block, determining whether or not a left boundary or an upper boundary of the current block is a boundary of a predetermined image region, configuring a reference sample by using at least one reconstructed sample included in at least one reconstructed sample line adjacent to the current block based on the determination result, and performing intra-prediction for the current block based on the intra-prediction mode and the reference sample.
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13.发明授权公开(公告)号：US10958903B2
公开(公告)日：2021-03-23
申请号：US16336243
申请日：2017-09-26
Inventor： Dong San Jun , Jin Ho Lee , Jung Won Kang , Hyun Suk Ko , Sung Chang Lim , Ha Hyun Lee , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/176 , H04N19/593 , H04N19/11
Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method of the present invention comprises decoding first information indicating whether a maximum of N intra prediction modes are used or a maximum of M intra prediction modes are used for an intra prediction for a current block, in which the M is smaller than the N, deriving an intra prediction mode of the current block, inverse-mapping the derived intra prediction mode on a corresponding intra prediction mode among the maximum N intra prediction modes when the decoded first information indicates that the maximum M intra prediction modes are used for the intra prediction for the current block, and generating an intra prediction block by performing an intra prediction for the current block, based on the inverse-mapped intra prediction mode.
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公开(公告)号：US10090928B2
公开(公告)日：2018-10-02
申请号：US15378194
申请日：2016-12-14
Inventor： Min Kyu Sung , Jong Hyun Lee , Hwan Seok Chung , Seung Hyun Cho , Chan Gyo Han
IPC: H04B10/00 , H04B10/2513 , H04B10/2575
Abstract: Provided is an analog optical transmission system using a dispersion management technique. The analog optical transmission system may include a digital unit (DU) pool including a plurality of DUs to transmit an optical signal; a plurality of radio units (RUs) to receive the optical signal; and one or more dispersion management apparatus to remove a signal distortion component caused by an interaction between a chirp and chromatic dispersion by compensating for the chromatic dispersion before the plurality of RUs receives the optical signal that is transmitted from the DU pool.
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公开(公告)号：US10027415B2
公开(公告)日：2018-07-17
申请号：US15079714
申请日：2016-03-24
Inventor： Seung Hyun Cho , Jong Hyun Lee , Hwan Seok Chung , Chan Gyo Han
IPC: H04B10/25 , H04B10/2575
CPC classification number: H04B10/25753 , H04B10/25759
Abstract: An apparatus for transmitting a control signal in a radio-over-fiber (RoF)-based mobile fronthaul includes: a data channel transmitter configured to generate a data signal at a preassigned frequency or wavelength; a control channel transmitter configured to generate a control signal at a designated frequency or wavelength that is shared with other apparatuses; and a combiner configured to combine the data signal with the control signal.
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Patent Agency Ranking
公开(公告)号：US09787395B2
公开(公告)日：2017-10-10
申请号：US15007739
申请日：2016-01-27
Inventor： Hwan Seok Chung , Seung Hyun Cho , Jong Hyun Lee , Sang Soo Lee , Chan Gyo Han
IPC: H04B10/079 , H04B10/2575 , H04B10/50 , H04B10/564
CPC classification number: H04B10/07953 , H04B10/25759 , H04B10/50572 , H04B10/50575 , H04B10/564
Abstract: An optical fiber cable of a mobile fronthaul system based on a radio over fiber (RoF), which includes a control apparatus for monitoring an analog optical link according to an exemplary embodiment, may be monitored. The monitoring control apparatus may include an optical signal monitor to monitor an optical signal passing through an optical fiber cable, and a system controller to control the optical signal based on a result of the monitoring. The optical signal monitor may calculate an average optical power, carrier-to-noise ratio (CNR), and a size of a nonlinear component from an electrical signal, which has been acquired from the optical signal. Then, the optical signal monitor may control the calculated average optical power, CNR, and nonlinear component.
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公开(公告)号：US12225189B2
公开(公告)日：2025-02-11
申请号：US18411515
申请日：2024-01-12
Inventor： Jung Won Kang , Sung Chang Lim , Hyun Suk Ko , Ha Hyun Lee , Jin Ho Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/96
Abstract: The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.
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公开(公告)号：US12192483B2
公开(公告)日：2025-01-07
申请号：US18463848
申请日：2023-09-08
Inventor： Dong San Jun , Jin Ho Lee , Jung Won Kang , Hyun Suk Ko , Sung Chang Lim , Ha Hyun Lee , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/159 , H04N19/105 , H04N19/126 , H04N19/13 , H04N19/176 , H04N19/50 , H04N19/593
Abstract: An image encoding/decoding method and apparatus for performing intra prediction are provided. An image decoding method of the present invention comprises deriving an intra prediction mode for a current block, selecting at least one reconstructed sample line neighboring to the current block, constructing a reference sample using at least one reconstructed sample included in the at least one reconstructed sample line, and performing intra prediction for the current block based on the intra prediction mode and the reference sample.
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公开(公告)号：US11936853B2
公开(公告)日：2024-03-19
申请号：US18094456
申请日：2023-01-09
Inventor： Jung Won Kang , Sung Chang Lim , Hyun Suk Ko , Ha Hyun Lee , Jin Ho Lee , Dong San Jun , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi
IPC: H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/96
CPC classification number: H04N19/105 , H04N19/119 , H04N19/159 , H04N19/176 , H04N19/186 , H04N19/70 , H04N19/96
Abstract: The present invention relates to an image encoding method and an image decoding method. The image decoding method includes partitioning a picture into a plurality of coding units, constructing a coding unit group including at least one coding unit of the plurality of coding units, obtaining coding information in units of one coding unit group, and decoding at least one coding unit of the plurality of coding units included in the coding unit group by using the obtained coding information.
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公开(公告)号：US11863798B2
公开(公告)日：2024-01-02
申请号：US16308208
申请日：2017-07-10
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
Inventor： Sung Chang Lim , Jung Won Kang , Hyun Suk Ko , Jin Ho Lee , Dong San Jun , Ha Hyun Lee , Seung Hyun Cho , Hui Yong Kim , Jin Soo Choi , Yung Lyul Lee , Jun Woo Choi
IPC: H04N19/91 , H04N19/149 , H04N19/159 , H04N19/176 , H04N19/44 , H04N19/182 , H04N19/146
CPC classification number: H04N19/91 , H04N19/146 , H04N19/149 , H04N19/159 , H04N19/176 , H04N19/182 , H04N19/44
Abstract: The present invention relates to an image encoding/decoding method and apparatus. An image encoding method according to the present invention may comprise generating a transform block by performing at least one of transform and quantization; grouping at least one coefficient included in the transform block into at least one coefficient group (CG); scanning at least one coefficient included in the coefficient group; and encoding the at least one coefficient.
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