Patents by Inventor Sung-won Lim

Sung-won 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: 20220150500
    Abstract: There is provided an image encoding/decoding method and apparatus. The image decoding method comprises decoding size information of a quantization group from a bitstream, acquiring a delta quantization parameter of a current block on the basis of the size information of the quantization group, and deriving a quantization parameter for the current block on the basis of the delta quantization parameter.
    Type: Application
    Filed: January 31, 2022
    Publication date: May 12, 2022
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY
    Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM, Yung Lyul LEE, Myung Jun KIM, Nam Uk KIM, Ji Youn JUNG, Yang Woo KIM, Jae Gon KIM
  • Publication number: 20220150529
    Abstract: The present specification discloses a method of decoding an image. The method includes obtaining a motion vector of a collocated block included in a reference picture of a current block in a temporal motion buffer; changing a format of the obtained motion vector; and deriving the motion vector, in which the format is changed, into a temporal motion vector of the current block.
    Type: Application
    Filed: September 17, 2019
    Publication date: May 12, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang LIM, Jung Won KANG, Ha Hyun LEE, Jin Ho LEE, Hui Yong KIM
  • Publication number: 20220150511
    Abstract: An image decoding method is disclosed in the present specification. An image decoding method according to the present invention may include: determining a prediction mode of a current block as IBC (Intra Block Copy) mode, deriving a candidate list for deriving a block vector of the current block and deriving a block vector of the current block by using the candidate list, wherein the candidate list is derived based on a size of the current block.
    Type: Application
    Filed: December 19, 2019
    Publication date: May 12, 2022
    Applicants: Electronics and Telecommunications Research Institute, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Ha Hyun LEE, Jung Won KANG, Sung Chang LIM, Jin Ho LEE, Hui Yong KIM, Hae Chul CHOI, Dae Hyeok GWON, Hee Ji HAN
  • Patent number: 11297343
    Abstract: A method of decoding a video signal according to the present invention may include: determining whether or not change in brightness is present between a current video including a current block and a reference video of the current video; when it is determined that change in brightness is present between the current video and the reference video, determining weight prediction parameter candidates of the current block; determining a weight prediction parameter of the current block on the basis of index information specifying any of the weight prediction parameter candidates; and performing prediction for the current block on the basis of the weight prediction parameter.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 5, 2022
    Assignee: Intellectual Discovery Co.. Ltd.
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • Patent number: 11276761
    Abstract: A semiconductor device includes at least one trench extending into a semiconductor substrate and lined with a gate dielectric layer; a dipole inducing layer covering a lowermost portion of the lined trench; a gate electrode covering the dipole inducing layer and filled in the lined trench; and doping regions, in the semiconductor substrate, separated from each other by the lined trench and separated from the dipole inducing layer.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 15, 2022
    Assignee: SK hynix Inc.
    Inventors: Dong-Soo Kim, Sung-Won Lim, Eun-Jeong Kim, Hyun-Jin Chang, Keun Heo, Jee-Hyun Kim
  • Publication number: 20220030249
    Abstract: The present invention relates to an image encoding/decoding method and device. In an image decoding method and device according to an embodiment of the present invention, a reconstructed pixel region within an image to which a current block to be decoded belongs is selected; a motion vector of the reconstructed pixel region is derived on the basis of the reconstructed pixel region and a reference image of the current block; and the derived motion vector is selected as a motion vector of the current block.
    Type: Application
    Filed: October 4, 2021
    Publication date: January 27, 2022
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • Publication number: 20210392339
    Abstract: An image decoding method according to the present disclosure includes determining a reference pixel line of a current block, determining an intra prediction mode of the current block and deriving a prediction sample of the current block based on the intra prediction mode and a reference pixel included in the reference pixel line. In this case, the prediction sample is determined based on a prediction angle of the intra prediction mode and an inverse-angle variable derived based on the prediction angle. And when the prediction angle has a predefined value, the inverse-angle variable is set as a default value.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • Publication number: 20210392370
    Abstract: A video decoding method according to the present disclosure may include determining whether an affine motion model is applied to a current block or not, performing motion compensation for the current block according to whether the affine motion model is applied or not, determining a value of a first variable and a second variable representing whether a prediction block obtained by the motion compensation will be refined and determining a padding size of the prediction block.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • Publication number: 20210392337
    Abstract: An image decoding method and apparatus according to the present disclosure may determine an inter prediction mode of a current block, derive motion information of a current block according to the inter prediction mode, obtain a first prediction block of the current block based on the motion information, and obtain a second prediction block of the current block by applying at least one of a weight, an offset, or a first variable for explicit weighted prediction to the first prediction block.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Applicant: KT CORPORATION
    Inventor: Sung Won LIM
  • Publication number: 20210352296
    Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.
    Type: Application
    Filed: July 21, 2021
    Publication date: November 11, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Dong Jae WON, Sung Won LIM
  • Publication number: 20210329238
    Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.
    Type: Application
    Filed: June 30, 2021
    Publication date: October 21, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • Patent number: 11140396
    Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: October 5, 2021
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
  • Patent number: 11140397
    Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: October 5, 2021
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
  • Publication number: 20210297666
    Abstract: The present invention provides an image encoding method and an image decoding method. The image encoding method of the present invention comprises: a first dividing step of dividing a current image into a plurality of blocks; and a second dividing step of dividing, into a plurality of sub blocks, a block, which is to be divided and includes a boundary of the current image, among the plurality of blocks, wherein the second dividing step is recursively performed by setting a sub block including the boundary of the current images as the block to be divided, until the sub block including the boundary of the current image does not exist among the sub blocks.
    Type: Application
    Filed: May 24, 2021
    Publication date: September 23, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • Patent number: 11122273
    Abstract: A method for encoding image signal, according to the present invention, can: encode a partial block coefficient flag indicating whether a coefficient of a current partial block is a non-zero coefficient; encode a first flag indicating whether an absolute value of the coefficient is greater than 1, encode a second flag indicating whether the absolute value of the coefficient is greater than 2; encode the residual coefficients, which have not been encoded, on the basis of the first flag or the second flag in the current partial block; and encode a code for the coefficient of the current partial block.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: September 14, 2021
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee Moon, Dong Jae Won, Sung Won Lim
  • Patent number: 11122265
    Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: September 14, 2021
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • Publication number: 20210281853
    Abstract: Disclosed are an image encoding/decoding method and apparatus. The method and apparatus select at least one reference pixel line from among multiple reference pixel lines and derive a predicted value of a pixel within a current block by using the value of at least one pixel within the selected reference pixel line(s). Alternatively, the method and apparatus derive an intra prediction mode of a reconstructed pixel region on the basis of a reference pixel region of at least one reconstructed pixel region, derive an intra prediction mode of a current block on the basis of the derived intra prediction mode of the reconstructed pixel region, obtain an intra prediction block of the current block by using the derived intra prediction mode, and reconstruct the current block by summing the obtained intra prediction block and a residual block of the current block.
    Type: Application
    Filed: May 12, 2021
    Publication date: September 9, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • Publication number: 20210281854
    Abstract: Disclosed are an image encoding/decoding method and apparatus. The method and apparatus select at least one reference pixel line from among multiple reference pixel lines and derive a predicted value of a pixel within a current block by using the value of at least one pixel within the selected reference pixel line(s). Alternatively, the method and apparatus derive an intra prediction mode of a reconstructed pixel region on the basis of a reference pixel region of at least one reconstructed pixel region, derive an intra prediction mode of a current block on the basis of the derived intra prediction mode of the reconstructed pixel region, obtain an intra prediction block of the current block by using the derived intra prediction mode, and reconstruct the current block by summing the obtained intra prediction block and a residual block of the current block.
    Type: Application
    Filed: May 12, 2021
    Publication date: September 9, 2021
    Applicant: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee MOON, Sung Won LIM, Dong Jae WON
  • Patent number: 11115659
    Abstract: An image signal decoding method according to the present invention comprises the steps of: decoding information indicating whether a current block is encoded using a multi-mode intra prediction; when it is determined that the current block is encoded in the multi-mode intra prediction, dividing the current block into a plurality of partial blocks; and obtaining an intra prediction mode of each of the plurality of partial blocks.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: September 7, 2021
    Assignee: Industry Academy Cooperation Foundation of Sejong University
    Inventors: Joo Hee Moon, Sung Won Lim, Dong Jae Won
  • Publication number: 20210274214
    Abstract: Disclosed herein are an image encoding method and an image decoding method. The image decoding method includes determining an initial motion vector of a current block using a motion vector of a reconstructed region, searching for the motion vector of the current block based on the initial motion vector, and generating a prediction sample of the current block using the motion vector. The initial motion vector includes a motion vector in a past direction and a motion vector in a future direction.
    Type: Application
    Filed: June 18, 2019
    Publication date: September 2, 2021
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Joo Hee MOON, Dong Jae WON, Jae Min HA, Sung Won LIM