Patents by Inventor Hae Chul Choi

Hae Chul Choi 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: 20210375007
    Abstract: Disclosed is a data transmission system that transmits data by using a relay. The relay selects a transmission terminal from among a plurality of terminals accessing a base station. A base station transmits base station data to the relay during a first time slot, and the transmission terminal transmits terminal data to the relay. The relay transmits terminal data to the base station during a second time slot, and transmits base station data to the transmission terminal.
    Type: Application
    Filed: August 9, 2021
    Publication date: December 2, 2021
    Inventors: Sung Chang LIM, Se Yoon JEONG, Hae Chul CHOI, Jin Soo CHOI, Jin Woo HONG, Yung Lyul LEE, Dae Yeon KIM
  • Publication number: 20210377526
    Abstract: An image encoding/decoding method is disclosed. An image decoding method of the present invention may comprise identifying a region by partitioning an image, and determining a prediction mode of the region on the basis of at least one of a size of the region, a partition shape, and a coding parameter of the region. The determined prediction mode of the region may be determined as a prediction mode of all coding blocks included in the region.
    Type: Application
    Filed: September 20, 2019
    Publication date: December 2, 2021
    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
  • Patent number: 11176711
    Abstract: Disclosed is a data transmission system that transmits data by using a relay. The relay selects a transmission terminal from among a plurality of terminals accessing a base station. A base station transmits base station data to the relay during a first time slot, and the transmission terminal transmits terminal data to the relay. The relay transmits terminal data to the base station during a second time slot, and transmits base station data to the transmission terminal.
    Type: Grant
    Filed: October 3, 2013
    Date of Patent: November 16, 2021
    Assignee: Intellectual Discovery Co., Ltd.
    Inventors: Sung Chang Lim, Se Yoon Jeong, Hae Chul Choi, Jin Soo Choi, Jin Woo Hong, Yung Lyul Lee, Dae Yeon Kim
  • Patent number: 11172206
    Abstract: An intra prediction mode encoding and decoding method, an image decoding device, and an image encoding device operate by deriving most probable modes (MPMs) from surrounding prediction units adjacent to a current prediction unit and deriving an intra prediction mode of the current prediction unit on the basis of an MPM flag indicating whether an MPM having the same prediction mode as the intra prediction mode of the current prediction unit exists among the derived MPMs.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: November 9, 2021
    Assignees: Electronics and Telecommunications Research Institute, Intellectual Discovery Co., Ltd.
    Inventors: Jin Ho Lee, Hui Yong Kim, Sung Chang Lim, Jin Soo Choi, Jin woong Kim, Jae Gon Kim, Hae Chul Choi, Sang Yong Lee
  • Publication number: 20210297658
    Abstract: An image encoding/decoding method is disclosed. Present invention of the method of decoding an image comprises determining a prediction mode for a current block and performing prediction on the current block on the basis of the determined prediction mode.
    Type: Application
    Filed: September 3, 2019
    Publication date: September 23, 2021
    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, Aram BACK, Dae Hyeok GWON
  • Publication number: 20210268311
    Abstract: According to the present invention, disclosed is a radiotherapy apparatus for an animal, comprising: a treatment part including an accommodation space for placing an animal thereon; an irradiation part including an electron generator and a linear accelerator coupled to one side of the electron generator and placed in a direction perpendicular to the treatment part for emitting radiation toward the treatment part; and an image acquisition part, positioned at a predetermined interval with the treatment part along the direction of the emitting of radiation, for acquiring an image of an irradiation area when radiation is emitted, wherein an output of radiation is between 1 and 2 MeV so that radiation is emitted to an affected area positioned within a predetermined distance from the epidermis of the animal.
    Type: Application
    Filed: April 17, 2019
    Publication date: September 2, 2021
    Applicant: Korea Institute of Radiological & Medical Sciences
    Inventors: Seung Woo Park, Mun Sik Choi, Hae June Lee, Su Chul Han, Jong Hyun Back
  • Publication number: 20210218972
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Application
    Filed: April 1, 2021
    Publication date: July 15, 2021
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon JEONG, Hae-Chul CHOI, Jeong-Il SEO, Seung-Kwon BEACK, In-Seon JANG, Jae-Gon KIM, Kyung-Ae MOON, Dae-Young JANG, Jin-Woo HONG, Jin-Woong KIM, Yung-Lyul LEE, Dong-Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Dae-Yeon KIM, Dong-Kyun KIM
  • Publication number: 20210218973
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Application
    Filed: April 1, 2021
    Publication date: July 15, 2021
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon JEONG, Hae-Chul CHOI, Jeong-Il SEO, Seung-Kwon BEACK, In-Seon JANG, Jae-Gon KIM, Kyung-Ae MOON, Dae-Young JANG, Jin-Woo HONG, Jin-Woong KIM, Yung-Lyul LEE, Dong-Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Dae-Yeon KIM, Dong-Kyun KIM
  • Publication number: 20210195188
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 24, 2021
    Applicants: Electronics and Telecommunications Research Institute, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jin Ho LEE, Jung Won KANG, Hyun Suk KO, Sung Chang LIM, Ha Hyun LEE, Dong San JUN, Seung Hyun CHO, Hui Yong KIM, Hae Chul CHOI, Aram BACK, Jin Soo CHOI, Jae Gon KIM
  • Publication number: 20210185349
    Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 17, 2021
    Inventors: Hae-Chul CHOI, Se Yoon JEONG, Sukhee CHO, Hui Yong KIM, Jinho LEE, Hahyun LEE, Sung-Chang LIM, Jongho KIM, Jin Soo CHOI, Jin Woo HONG, Jin Woong KIM
  • Patent number: 11039130
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus according to the present invention may comprise deriving an intra-prediction mode of a current block, and performing intra-prediction for the current block based on the intra-prediction mode. The deriving of the intra-prediction mode may comprise decoding a predetermined mode sameness indicator.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 15, 2021
    Assignees: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Hanbat National University Industry-Academic Cooperation Foundation
    Inventors: Jin Ho Lee, Sung Chang Lim, Jung Won Kang, Hyun Suk Ko, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Jae Gon Kim, Do Hyeon Park, Jin Soo Choi, Hae Chul Choi
  • Publication number: 20210127121
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Application
    Filed: January 5, 2021
    Publication date: April 29, 2021
    Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul CHOI, Se Yoon JEONG, Sung-Chang LIM, Jin Soo CHOI, Jin Woo HONG, Dong Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Gwang Hoon PARK, Seung Ryong KOOK, Sea-Nae PARK, Kwang-Su JEONG
  • Patent number: 10965952
    Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 30, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hae-Chul Choi, Se Yoon Jeong, Sukhee Cho, Hui Yong Kim, Jinho Lee, Hahyun Lee, Sung-Chang Lim, Jongho Kim, Jin Soo Choi, Jin Woo Hong, Jin Woong Kim
  • Patent number: 10965953
    Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 30, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hae-Chul Choi, Se Yoon Jeong, Sukhee Cho, Hui Yong Kim, Jinho Lee, Hahyun Lee, Sung-Chang Lim, Jongho Kim, Jin Soo Choi, Jin Woo Hong, Jin Woong Kim
  • Patent number: 10958933
    Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: March 23, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hae-Chul Choi, Se Yoon Jeong, Sukhee Cho, Hui Yong Kim, Jinho Lee, Hahyun Lee, Sung-Chang Lim, Jongho Kim, Jin Soo Choi, Jin Woo Hong, Jin Woong Kim
  • Patent number: 10917647
    Abstract: The present invention relates to an image encoding and decoding technique, and more particularly, to an image encoder and decoder using unidirectional prediction. The image encoder includes a dividing unit to divide a macro block into a plurality of sub-blocks, a unidirectional application determining unit to determine whether an identical prediction mode is applied to each of the plurality of sub-blocks, and a prediction mode determining unit to determine a prediction mode with respect to each of the plurality of sub-blocks based on a determined result of the unidirectional application determining unit.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: February 9, 2021
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Industry-Academic Collaboration Foundation, University-Industry Cooperation Group of Kyung Hee University
    Inventors: Hae Chul Choi, Se Yoon Jeong, Sung-Chang Lim, Jin Soo Choi, Jin Woo Hong, Dong Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Gwang Hoon Park, Seung Ryong Kook, Sea-Nae Park, Kwang-Su Jeong
  • Patent number: 10911756
    Abstract: An image encoding/decoding method and apparatus are provided. An image decoding method performed by an image decoding apparatus of the present invention may comprise decoding an indicator indicating whether or not partition information of a current block is derived from partition information of a corresponding block of the current block, obtaining the partition information of the current block based on the decoded indicator, and partitioning the current block based on the obtained partition information.
    Type: Grant
    Filed: October 23, 2017
    Date of Patent: February 2, 2021
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITY, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Jin Ho Lee, Jung Won Kang, Hyun Suk Ko, Sung Chang Lim, Ha Hyun Lee, Dong San Jun, Seung Hyun Cho, Hui Yong Kim, Hae Chul Choi, Aram Back, Jin Soo Choi, Jae Gon Kim
  • Publication number: 20200366931
    Abstract: Disclosed herein are a video decoding method and apparatus and a video encoding method and apparatus. Encoding and decoding of a target block are performed using intra-prediction. The intra-prediction is intra-prediction that uses bidirectional intra-prediction and a remaining mode. In bidirectional intra-prediction, a prediction value for a target pixel in the target block is determined based on reference pixels in two directions of bidirectional intra-prediction. In intra-prediction using a remaining mode, the remaining mode indicates remaining intra-prediction modes other than MPMs present in an MPM list.
    Type: Application
    Filed: November 28, 2018
    Publication date: November 19, 2020
    Applicants: Electronics and Telecommunications Research Institute, HANBAT NATIONAL UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
    Inventors: Hyunsuk KO, Jung-Won KANG, Sung-Chang LIM, Jin-Ho LEE, Ha-Hyun LEE, Dong-San JUN, Hae-Chul CHOI, Hui-Yong KIM, A-Ram BACK
  • Patent number: 10798409
    Abstract: Provided is an image encoding/decoding apparatus and method. The image encoding apparatus may include a motion vector prediction unit to perform a prediction with respect to an arbitrary motion vector of a current block within an image, using at least one of vector information of a motion vector corresponding to an adjacent block and vector information of a previous motion vector of the current block, and a differential determination unit to determine differential information of a motion vector of the current block based on the motion vector predicted in the motion vector prediction unit and an actual motion vector of the current block.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: October 6, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hae-Chul Choi, Se Yoon Jeong, Sukhee Cho, Hui Yong Kim, Jinho Lee, Hahyun Lee, Sung-Chang Lim, Jongho Kim, Jin Soo Choi, Jin Woo Hong, Jin Woong Kim
  • Publication number: 20200304781
    Abstract: Provided are an image encoding method and device. When carrying out image encoding for a block within a slice, at least one block in a restored block of the slice is set as a reference block. When this is done, the encoding parameters of the reference block are distinguished, and the block to be encoded is encoded adaptively based on the encoding parameters.
    Type: Application
    Filed: June 9, 2020
    Publication date: September 24, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Chang Lim, Jong Ho Kim, Hae Chul Choi, Hui Yong Kim, Ha Hyun Lee, Jin Ho Lee, Se Yoon Jeong, Suk Hee Cho, Jin Soo Choi, Jin Woo Hong, Jin Woong Kim