Patents by Inventor Jaehyun Lim

Jaehyun Lim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200244967
    Abstract: The present invention discloses a method and apparatus for encoding or decoding a video signal. The method for processing a video signal according to the present invention uses a merging mode in which prediction information on a neighbor unit is used instead of transmitting prediction information on the present unit, so as to improve coding efficiency. In this case, the number of available candidate units for merging among the units in a predetermined position is determined, and information for the merging mode is acquired on the basis of the number of the available candidate units for merging. The unit to be merged is determined using the information for the merging mode, and prediction information on the unit to be merged is acquired. The prediction value for the present unit is acquired using the prediction information on the unit to be merged, and the present unit is restored using the acquired prediction value.
    Type: Application
    Filed: April 15, 2020
    Publication date: July 30, 2020
    Inventors: Seungwook PARK, Joonyoung PARK, Jungsun KIM, Younghee CHOI, Yongjoon JEON, Jaewon SUNG, Byeongmoon JEON, Jaehyun LIM
  • Patent number: 10728576
    Abstract: Disclosed are an intra-prediction method using filtering and an apparatus using the method. An image-decoding method comprises: a step of filtering an n upper reference pixel of a block to be predicted and neighboring pixels of the n upper reference pixel so as to obtain the filtered n upper reference pixel; and a step of filtering an n left reference pixel of a block to be predicted and neighboring pixels of the n left reference pixel so as to obtain the filtered n left reference pixel. According to the present invention, intra-prediction may be efficiently performed to improve image-encoding/decoding efficiency.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: July 28, 2020
    Assignee: LG Electronics Inc.
    Inventors: Yongjoon Jeon, Seungwook Park, Jaehyun Lim, Jungsun Kim, Joonyoung Park, Younghee Choi, Jaewon Sung, Byeongmoon Jeon
  • Patent number: 10728577
    Abstract: A method for intra prediction comprises determining a first MPM candidate corresponding to a left-side candidate block on the basis of a position of the left-side candidate block adjacent to a left side of a current block; determining a second MPM candidate corresponding to an upper-end candidate block on the basis of a position of the upper-end candidate block adjacent to an upper end of the current block; generating an MPM candidate list including a plurality of MPM candidates, on the basis of the first MPM candidate and the second MPM candidate; and determining one MPM candidate of the plurality of the MPM candidates that constitute the MPM candidate list as an intra prediction mode of the current block, and performing intra prediction for the current block on the basis of the determined intra prediction mode to generate a prediction block corresponding to the current block.
    Type: Grant
    Filed: June 7, 2019
    Date of Patent: July 28, 2020
    Assignee: LG Electronics Inc.
    Inventors: Jaehyun Lim, Seungwook Park, Yongjoon Jeon, Jungsun Kim, Hendry Hendry, Byeongmoon Jeon, Joonyoung Park, Chulkeun Kim, Naeri Park
  • Publication number: 20200236361
    Abstract: Disclosed herein are an intra prediction mode based image processing method and an apparatus therefor. Specifically, a method for processing an image based on an intra prediction mode may include: generating a first prediction sample and a second prediction sample using a reference sample adjacent to a current block; generating a final prediction sample of the current block by performing a weighted addition of the first and second prediction samples; and reconstructing the current block by adding the final prediction sample to a residual sample of the current block.
    Type: Application
    Filed: July 18, 2018
    Publication date: July 23, 2020
    Inventors: Hyeongmoon JANG, Seunghwan KIM, Jaehyun LIM
  • Publication number: 20200228797
    Abstract: The present invention relates to method and device for decoding a bitstream for a video signal in a decoding device, the method comprising the steps of: obtaining skip flag information about a current coding block from a bitstream; and, if the skip flag information indicates that a skip mode is applied with respect to the current coding block, performing inter-prediction for the current coding block by means of inter-prediction parameter information of a neighboring block of the current coding block. Moreover, the neighboring block of the current coding block comprises a plurality of temporal neighboring blocks and spatial neighboring blocks adjacent to the current coding block.
    Type: Application
    Filed: March 30, 2020
    Publication date: July 16, 2020
    Inventors: Naeri PARK, Jaehyun LIM, Jungdong SEO, Junghak NAM
  • Publication number: 20200228835
    Abstract: The present invention relates to an intra-prediction method and to an encoder and decoder using same. The intra-prediction method according to one embodiment of the present invention comprises the steps of deriving a prediction mode of a current block; and generating a prediction block with respect to the current block on the basis of the prediction mode of the current block. When the prediction mode of the current block is an intra-angular prediction mode, values of boundary samples from among left boundary samples and upper boundary samples of the prediction block, which are not positioned in a prediction direction of the intra-angular prediction mode, are derived on the basis of reference samples positioned in the prediction direction of the intra-angular prediction mode, and on the basis of adjacent reference samples.
    Type: Application
    Filed: March 31, 2020
    Publication date: July 16, 2020
    Inventors: Joonyoung PARK, Seungwook PARK, Jaehyun LIM, Jungsun KIM, Younghee CHOI, Byeongmoon JEON, Yongjoon JEON
  • Patent number: 10715825
    Abstract: The present invention relates to the encoding and decoding of image information. According to the present invention, the decoding method comprises the steps of: entropy-decoding received information; performing inter prediction on a current block based on the entropy-decoded information; and restoring images by using the prediction results, wherein, in the inter prediction step, a skip mode or merge mode is applied to the current block and movement information of the current block may be determined based on the movement information of a neighboring block of the current block.
    Type: Grant
    Filed: January 24, 2019
    Date of Patent: July 14, 2020
    Assignee: LG ELECTRONIC INC.
    Inventors: Seungwook Park, Jaehyun Lim, Yongjoon Jeon, Hendry Hendry, Younghee Choi, Jaewon Sung, Jungsun Kim, Byeongmoon Jeon, Joonyoung Park
  • Publication number: 20200221319
    Abstract: The present disclosure relates to a 5th generation (5G) or pre-5G communication system for supporting a higher data transmission rate beyond a 4th generation (4G) communication system such as long-term evolution (LTE). The present disclosure relates to beam management in a wireless communication system, and an operation method of a base station may comprise the steps of: transmitting first type reference signals; receiving feedback information on the first type reference signals; transmitting information on resources for second type reference signals, which are allocated on the basis of the feedback information, to at least one terminal; and transmitting the second type reference signals through the resources, wherein the second type reference signals are transmitted using fixed transmission beams by the base station. The present research has been conducted with the support of the “cross-departmental giga KOREA project” of the government (the ministry of science and ICT) in 2017 (No.
    Type: Application
    Filed: December 15, 2017
    Publication date: July 9, 2020
    Inventors: Namkoo KANG, Giwon LEE, Jaehyun HWANG, Jin PARK, Kangeun LEE, Chiwoo LIM
  • Publication number: 20200221084
    Abstract: The present invention provides an image processing method on the basis of an intra prediction mode and an apparatus therefor. Specifically, a method for processing an image on the basis of an intra prediction mode may comprise the steps of: identifying whether weighted intra prediction is allowed for a current block and whether the weight intra prediction is applied to the current block; identifying whether reference sample filtering is applied to the current block when the weighted intra prediction is not allowed for the current block or when the weighted intra prediction is not applied to the current block; and performing reference sample filtering of reference samples neighboring the current block when the reference sample filtering is applied.
    Type: Application
    Filed: June 19, 2018
    Publication date: July 9, 2020
    Inventors: Hyeongmoon JANG, Seunghwan KIM, Jaehyun LIM
  • Publication number: 20200213621
    Abstract: The present disclosure provides a method for processing a video signal by using a linear relationship between transform types, the method comprising the steps of: determining a transform group on the basis of a prediction mode of a current block; parsing a transform combination index from the video signal, wherein the transform combination index indicates one of a plurality of transform combinations in the transform group; deriving a transform combination corresponding to the transform combination index, wherein the transform combination includes a horizontal transform and a vertical transform and includes DST-1 or DCT-5; performing inverse transform of the current block on the basis of the transform combination; and reconstructing the video signal by using the inverse-transformed current block.
    Type: Application
    Filed: June 8, 2018
    Publication date: July 2, 2020
    Inventors: Moonmo KOO, Jaehyun Lim, Bumshik Lee
  • Publication number: 20200204814
    Abstract: According to the present disclosure, an image decoding method performed by a decoding device comprises the steps of: deriving a first intra prediction mode of a current block; deriving neighboring samples including left neighboring samples and upper neighboring samples of the current block; deriving a second intra prediction mode of a target sample on the basis of a location of the target sample and the first intra prediction mode of the current block; and performing prediction for the target sample on the basis of the second intra prediction mode of the target sample.
    Type: Application
    Filed: November 27, 2017
    Publication date: June 25, 2020
    Inventors: Sunmi YOO, Jaehyun LIM, Jin HEO
  • Patent number: 10693800
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. A method of a proxy device in a communication system of the present disclosure includes identifying a packet loss rate on a wireless connection between a terminal and a server, determining whether the packet loss rate is greater than a predetermined threshold value, and proxying, if the packet loss rate is greater than the threshold value, the connection between the terminal and the server.
    Type: Grant
    Filed: May 17, 2018
    Date of Patent: June 23, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hakyung Jung, Junghwan Lim, Youngsuk Sun, Jinhyoung Kim, Jaehyun Hwang, Hyunjoo Lee, Sooyoung Jang, Giwon Lee, Jinho Lee
  • Patent number: 10694187
    Abstract: A video decoding method performed by a decoding device, according to the present invention, comprises the steps of: deriving at least one reference block for an object block; deriving a partitioned structure of the object block on the basis of a partitioned structure of the at least one reference block; partitioning the object block into a plurality of sub blocks on the basis of the derived partitioned structure; and generating recovered samples by decoding the plurality of sub blocks. According to the present invention, a partitioned structure of a current picture can be derived on the basis of a reference block of a neighboring picture, and thus the amount of data used in the additional information signaled for partitioning of the current picture can be reduced and overall coding efficiency can be improved.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: June 23, 2020
    Assignee: LG Electronics Inc.
    Inventors: Jaehyun Lim, Naeri Park
  • Patent number: 10687073
    Abstract: Disclosed are a method for encoding/decoding an image and a device therefor. Particularly, a method by which a decoding device decodes an image comprises the steps of: deriving a part mode of a coding block within a predefined part mode set; decoding a motion parameter in a prediction block unit partitioned from the coding block according to the part mode; and generating a predicted block by using the motion parameter decoded in the prediction block unit, wherein the part mode set includes an asymmetric 4-block part mode, the asymmetric 4-block part mode enables four prediction blocks to be partitioned from the coding block, and a horizontal partition and/or a vertical partition can be defined as an asymmetric partition form.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: June 16, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Jungdong Seo, Jaehyun Lim, Naeri Park
  • Publication number: 20200186821
    Abstract: According to an embodiment disclosed in the present document, it is possible to derive a history-based motion vector prediction (HMVP) buffer for a current block based on a history, and to derive motion information of the current block based on an HMVP candidate included in the HMVP buffer, thereby increasing inter prediction efficiency.
    Type: Application
    Filed: February 18, 2020
    Publication date: June 11, 2020
    Inventors: Naeri PARK, Seunghwan KIM, Junghak NAM, Jaehyun LIM, Hyeongmoon JANG
  • Publication number: 20200186828
    Abstract: A motion information storing method and a TMVP deriving method using the motion information storing method are provided. The motion information storing method includes a step of determining a representative block out of blocks of a motion data storage unit in a co-located picture with a current picture and a step of storing motion information of the representative block as motion information of the motion data storage unit, wherein the motion information of the representative block is used as motion information of the blocks included in the motion data storage unit.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Inventors: Joonyoung PARK, Seungwook PARK, Jaehyun LIM, Jungsun KIM, Younghee CHOI, Jaewon SUNG, Byeongmoon JEON, Yongjoon JEON
  • Patent number: 10681347
    Abstract: A filtering method performed by a decoding device according to the present invention comprises the steps of: deriving a specific neighboring block of a current block so as to derive filter information on the current block; deriving the specific neighboring block and a reference block within a reference picture corresponding to the specific neighboring block; deriving the filter information on the current block on the basis of the specific neighboring block and the reference block; and filtering the current block on the basis of the filter information. According to the present invention, the overall coding efficiency can be improved by deriving the filter information on the basis of the neighboring block of the already decoded current block and reducing or removing the amount of data for the transmission of the information necessary for filter generation.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: June 9, 2020
    Assignee: LG Electronics Inc.
    Inventors: Chulkeun Kim, Junghak Nam, Jaehyun Lim, Naeri Park, Jungdong Seo
  • Patent number: 10681364
    Abstract: The present invention relates to a video encoding method, a video decoding method, and a device using the same, and the video encoding method according to the present invention comprises the steps of: specifying a tile and a slice by partitioning an inputted picture; performing encoding on the basis of the tile and the slice; and transmitting the encoded video information, wherein the picture is partitioned into one or more tiles and one or more slices, and the restrictions for parallel processing can be applied to the tiles and the slices.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: June 9, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Hendry Hendry, Joonyoung Park, Yongjoon Jeon, Byeongmoon Jeon, Jungsun Kim, Jaehyun Lim, Chulkeun Kim, Naeri Park, Seungwook Park
  • Publication number: 20200177878
    Abstract: Disclosed are an intra-prediction mode-based image processing method and apparatus. In particular, the intra-prediction mode-based image processing method may comprise the steps of: generating a first prediction sample by performing spatial prediction on a current chroma block; determining whether or not a combined intra-prediction mode is applicable to the current chroma block; when the combined intra-prediction mode is applicable to the current chroma block, determining a component prediction mode used for inter-component prediction of the current chroma block; generating a second prediction sample by applying the determined component prediction mode to the current chroma block; and generating a final prediction sample of the current chroma block by using the first prediction sample and the second prediction sample.
    Type: Application
    Filed: March 19, 2018
    Publication date: June 4, 2020
    Inventors: Jangwon CHOI, Jaehyun LIM
  • Publication number: 20200177889
    Abstract: A transform method, according to the present invention, comprises the steps of: obtaining transform coefficients for a target block; determining a non-separable secondary transform (NSST) set for the target block; selecting one of a plurality of NSST kernels included in the NSST set on the basis of an NSST index; and generating modified transform coefficients by non-separable secondary-transform of the transform coefficients on the basis of the NSST kernel that has been selected, wherein the NSST set for the target block is determined on the basis of an intra-prediction mode and/or the size of the target block. According to the present invention, the amount of data transmitted, which is required for residual processing, can be reduced and residual coding efficiency can be increased.
    Type: Application
    Filed: January 31, 2018
    Publication date: June 4, 2020
    Inventors: Seunghwan KIM, Hyeongmoon JANG, Jaehyun LIM