公开(公告)号：US11166040B2

公开(公告)日：2021-11-02

申请号：US17113215

申请日：2020-12-07

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC分类号： H04N19/513 ,  H04N19/53 ,  H04N19/57

摘要： An apparatus for decoding a video signal, the apparatus comprising a processor, wherein the processor is configured to: configure a Motion Vector Prediction (MVP) candidate list for motion compensation of a current block through one of a first method and a second method, acquire a motion vector predictor of the current block, based on the configured MVP candidate list, acquire a motion vector differential value indicating a difference between a motion vector of the current block and the motion vector predictor, modify the motion vector differential value, based on a resolution of the motion vector differential value of the current block, acquire the motion vector of the current block, based on the motion vector predictor and the modified motion vector differential value, and reconstruct the current block, based on the acquired motion vector.

公开(公告)号：US11140384B2

公开(公告)日：2021-10-05

申请号：US16907081

申请日：2020-06-19

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Geonjung Ko ,  Juhyung Son ,  Dongcheol Kim ,  Jaehong Jung ,  Jinsam Kwak

IPC分类号： H04N19/105 ,  H04N19/132 ,  H04N19/159 ,  H04N19/176

摘要： Disclosed is a video signal processing method and device for encoding or decoding a video signal. More specifically, disclosed are a video signal processing method and a video signal processing device for performing the method, the method comprising: obtaining reference line information indicating a reference line for intra prediction of a current block among a plurality of reference lines comprising neighboring samples of the current block; determining, on the basis of the reference line information, an intra prediction mode for the current block among a plurality of intra prediction modes constituting an intra prediction mode set; and decoding the current block on the basis of a plurality of reference samples on the reference line according to the reference line information and the determined intra prediction mode, wherein the plurality of reference lines include a first reference line comprising neighboring samples on a line adjacent to the boundary of the current block and a second reference line comprising neighboring samples on a line spaced a distance corresponding to a predetermined number of samples apart from the boundary of the current block.

公开(公告)号：US11044470B2

公开(公告)日：2021-06-22

申请号：US17089267

申请日：2020-11-04

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Dongcheol Kim ,  Geonjung Ko ,  Jaehong Jung ,  Juhyung Son ,  Jinsam Kwak

IPC分类号： H04N19/105 ,  H04N19/176

摘要： A video signal processing method comprises the steps of: acquiring reference samples on a first side of a current block and reference samples on a second side thereof on the basis of pre-restored samples neighboring the current block; acquiring a direct current (DC) value for a prediction of the current block on the basis of a reference sample set composed of at least some of the reference samples on the first side and the reference samples on the second side, wherein the reference sample set includes the number of reference samples raised to a power of 2, obtained by excluding some of the reference samples on the first side and the reference samples on the second side, if the length of the first side and the length of the second side are different; and restoring the current block on the basis of the DC value.

公开(公告)号：US11284108B2

公开(公告)日：2022-03-22

申请号：US16758046

申请日：2018-10-24

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC分类号： H04N19/11 ,  H04N19/593 ,  H04N19/136 ,  H04N19/176

摘要： Disclosed are a video signal processing method and apparatus for encoding or decoding a video signal. In more detail, the video signal processing method includes receiving intra prediction mode information for a current block, wherein the intra prediction mode information indicates one of a plurality of intra prediction modes configuring an intra prediction mode set; and decoding the current block based on the received intra prediction mode information, wherein the intra prediction mode set comprises a plurality of angle modes, and the plurality of angle modes comprises a basic angle mode and an extended angle mode, wherein the extended angle mode is signaled based on the basic angle mode.

公开(公告)号：US11039162B2

公开(公告)日：2021-06-15

申请号：US17033723

申请日：2020-09-26

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Jaehong Jung ,  Dongcheol Kim ,  Geonjung Ko ,  Juhyung Son ,  Jinsam Kwak

IPC分类号： H04N19/513 ,  H04N19/105 ,  H04N19/132 ,  H04N19/137 ,  H04N19/176

摘要： Disclosed is a video signal processing method comprising the steps of: acquiring a merge index which indicates a candidate for prediction of a current block among a plurality of candidates for the prediction of the current block, which are included in a merge candidate list; acquiring motion information of the current block on the basis of motion information corresponding to the candidate indicated by the merge index; when the motion information of the current block includes a plurality of motion vectors corresponding to a list of different reference pictures, comparing picture order count (POC) differences between each of the reference pictures corresponding to the plurality of motion vectors and the current picture including the current block; correcting the plurality of motion vectors on the basis of a result of the comparison; and reconstructing the current block on the basis of the plurality of corrected motion vectors.

公开(公告)号：US11330302B2

公开(公告)日：2022-05-10

申请号：US17088110

申请日：2020-11-03

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Jaehong Jung ,  Juhyung Son ,  Dongcheol Kim ,  Geonjung Ko ,  Jinsam Kwak

IPC分类号： H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/61 ,  H04N19/132 ,  H04N19/176 ,  H04N19/18 ,  H04N19/70

摘要： A video signal decoding apparatus comprising a processor, wherein the processor is configured to: parse a syntax element related to a secondary transform of a coding unit from a bitstream of a video signal when one or more preset conditions are satisfied; check whether or not the secondary transform is applied to a transform block included in the coding unit based on the parsed syntax element; obtain one or more inverse transform coefficients for a first sub-block by performing an inverse secondary transform based on one or more coefficients of the first sub-block which is one of one or more sub-blocks constituting the transform block when the secondary transform is applied to the transform block; and obtain a residual sample for the transform block by performing an inverse primary transform based on the one or more inverse transform coefficients.

公开(公告)号：US11317118B2

公开(公告)日：2022-04-26

申请号：US17185683

申请日：2021-02-25

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC. ,  HUMAX CO., LTD.

发明人： Jaehong Jung ,  Juhyung Son ,  Dongcheol Kim ,  Geonjung Ko ,  Jinsam Kwak

IPC分类号： H04N19/625 ,  H04N19/12 ,  H04N19/176 ,  H04N19/61

摘要： Disclosed is a video signal processing method comprising the steps of: obtaining at least one transform block for a residual signal of a current block from a video signal bitstream; determining, on the basis of length information of a first side of the transform block, a horizontal transform kernel for horizontal transformation of the transform block, regardless of the length of a second side of the transform block, which is orthogonal to the first side; determining, on the basis of length information of the second side, a vertical transform kernel for vertical transformation of the transform block, regardless of the length of the first side; obtaining the residual signal of the current block by performing, on the transform block, inverse transformation using the horizontal transform kernel and the vertical transform kernel; and reconstructing the current block on the basis of the obtained residual signal.

公开(公告)号：US12108340B2

公开(公告)日：2024-10-01

申请号：US18437244

申请日：2024-02-09

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

发明人： Sanghyun Kim ,  Geonjung Ko ,  Juhyung Son ,  Jinsam Kwak

IPC分类号： H04W52/02

CPC分类号： H04W52/0235

摘要： Disclosed are a traffic transmission method and device, the method being performed by a terminal in a wireless communication system. Specifically, a non-access point (AP) STA of the present invention can receive, from an AP, a trigger frame triggering the transmission of a physical layer protocol data unit (PPDU). The trigger frame includes information indicating at least one traffic identifier (TID) that is allowed to be transmitted in a target wake time (TWT) period. The TWT period may indicate a period in which the transmission of traffic for the at least one TID having a specific transmission condition is allowed, and the transmission of traffic not having the specific transmission condition is restricted. Thereafter, the non-AP STA transmits a PPDU, including the traffic corresponding to the at least one TID, to the AP within the TWT period.

公开(公告)号：US12101814B2

公开(公告)日：2024-09-24

申请号：US18544403

申请日：2023-12-18

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

发明人： Geonjung Ko ,  Juhyung Son ,  Sanghyun Kim ,  Jinsam Kwak

IPC分类号： H04W4/00 ,  H04W24/10 ,  H04W74/08 ,  H04W74/0816

CPC分类号： H04W74/0816 ,  H04W24/10 ,  H04W74/0866

摘要： A station in a wireless communication system is disclosed. The station includes: a transceiver; and a processor for controlling the transceiver. The processor receives a trigger frame for triggering uplink transmission from an access point (AP), and the trigger frame allocates, to the station, a part of a transmission opportunity (TXOP) acquired by the AP, as a shared TXOP, transmits a CTS frame as a response to the trigger frame, and switches a first enhanced distributed channel access (EDCA) parameter set used for channel access to a second EDCA parameter set based on transmission for the AP within the shared TXOP.

公开(公告)号：US12101501B2

公开(公告)日：2024-09-24

申请号：US18328246

申请日：2023-06-02

申请人： WILUS INSTITUTE OF STANDARDS AND TECHNOLOGY INC.

发明人： Geonjung Ko ,  Dongcheol Kim ,  Juhyung Son ,  Jaehong Jung ,  Jinsam Kwak

IPC分类号： H04N19/53 ,  H04N19/513 ,  H04N19/57

CPC分类号： H04N19/513 ,  H04N19/53 ,  H04N19/57

摘要： A video signal decoding device comprising a processor, wherein the processor is configured to: obtain reference samples corresponding to a first side of a current block and reference samples corresponding to a second side of the current block, obtain a direct current (DC) value for prediction of the current block based on a reference sample set comprising at least some of the reference samples corresponding to the first side and the reference samples corresponding to the second side, and reconstruct the current block based on the DC value.