Patents by Inventor Dong Joon Choi

Dong Joon 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: 20250151076
    Abstract: An operation method of a terminal in a communication system may comprise: receiving downlink control information (DCI) for scheduling uplink transmission from a base station; identifying a communication node initiating a channel occupancy time associated with the uplink transmission based on a channel access parameter included in the DCI; and performing the uplink transmission scheduled by the DCI within the channel occupancy time initiated by the communication node, wherein the communication node is the terminal or the base station.
    Type: Application
    Filed: January 10, 2025
    Publication date: May 8, 2025
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hoi Yoon JUNG, Sung Ik PARK, Nam Ho HUR, Heung Mook KIM, Dong Joon CHOI
  • Patent number: 12284235
    Abstract: Disclosed herein are a hybrid download method and apparatus for multiview streaming. The hybrid download method includes requesting a group download for an n?1-th segment from a server, playing an n?3-th segment at a viewpoint VP1 of a viewer, when a group download request for the n?1-th segment is completed, making a group download request for an n-th segment, when a change in a viewpoint of the viewer occurs at a time at which an n?2-th segment is played, playing a low-quality n?2-th segment at a viewpoint VP3, when the group download for the n-th segment is completed, requesting a single download for a high-quality n?1-th segment corresponding to the viewpoint VP3 from the server, and when the single download for the high-quality n?1-th segment corresponding to the viewpoint VP3 is completed, playing the high-quality n?1-th segment at the viewpoint VP3.
    Type: Grant
    Filed: November 7, 2023
    Date of Patent: April 22, 2025
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Joon-Young Jung, Je-Won Lee, Dong-Joon Choi, Eun-Hee Hyun
  • Patent number: 12232133
    Abstract: An operation method of a terminal in a communication system may comprise: receiving downlink control information (DCI) for scheduling uplink transmission from a base station; identifying a communication node initiating a channel occupancy time associated with the uplink transmission based on a channel access parameter included in the DCI; and performing the uplink transmission scheduled by the DCI within the channel occupancy time initiated by the communication node, wherein the communication node is the terminal or the base station.
    Type: Grant
    Filed: March 17, 2022
    Date of Patent: February 18, 2025
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hoi Yoon Jung, Sung Ik Park, Nam Ho Hur, Heung Mook Kim, Dong Joon Choi
  • Patent number: 12177515
    Abstract: According to an embodiment of the present disclosure, there is provided a method and apparatus for transmitting/receiving a digital broadcast. The method for transmitting a digital broadcast, the method comprising: configuring AV data; configuring broadcast data; configuring application signaling information (ASI) by considering at least one of the AV data and the broadcast data or combination thereof; configuring an MPEG-based transport stream by multiplexing the AV data, the broadcast data and the ASI; and transmitting the MPEG-based transport stream, wherein the ASI includes data for driving an application executed by a broadcast receiver.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: December 24, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joon Young Jung, Je Won Lee, Dong Joon Choi
  • Publication number: 20240214112
    Abstract: Disclosed herein are a method for processing a retransmission broadcast signal using multi-antenna signals based on channel bonding and an apparatus for the same. The apparatus includes a stream multiplexing (muxing) unit for generating a single piece of input data from signals received from two or more reception channels, an input formatting unit for converting the input data into a Physical Layer Pipe (PLP), a stream partitioning unit for segmenting the physical layer pipe into pieces of data to be respectively transmitted over two or more transmission channels, and two or more retransmission-signal-processing units for retransmitting the pieces of data to the respective transmission channels corresponding thereto through multiple transmission antennas.
    Type: Application
    Filed: December 14, 2023
    Publication date: June 27, 2024
    Inventors: Jae-Hyun SEO, Hoi-Yoon JUNG, Sung-Ik PARK, Bo-Mi LIM, Dong-Joon CHOI, Nam-Ho HUR
  • Patent number: 11997366
    Abstract: An adaptive multi-view streaming processing method and apparatus for a multi-view stream is disclosed. Specifically, disclosed herein is a method and apparatus for adaptively processing or transmitting adaptive streaming by reflecting network states and changes in transmission environments in a multi-view streaming service environment where several or more multiple videos are simultaneously transmitted at an arbitrary moment. An adaptive streaming processing method for a multi-view stream may comprise selecting and downloading an i-th segment of a main view stream with a first quality level, inferring a size of an i-th segment of downloadable neighboring view streams based on a download time and transfer rate of the i-th segment of the main view stream, and selecting a second quality level corresponding to the inferred size of the i-th segment of the neighboring view streams and downloading the i-th segment of the neighboring view streams based on the selected second quality level.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: May 28, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Eun Hee Hyun, Kwan Woong Ryu, Je Won Lee, Joon Young Jung, Dong Joon Choi
  • Publication number: 20240163511
    Abstract: Disclosed herein is a method for receiving adaptive media streaming. The method may include calculating segment download time for each video quality level based on network throughput, a segment bitrate for the video quality level, segment duration, and a standard deviation of segment bitrates, determining a segment bitrate for maximizing the quality of viewing experience of a user based on the segment download time for each video quality level and a buffer level received from a playback buffer, making a request for the determined segment bitrate, transferring the request to a server, and transferring a corresponding video segment received in response to the request to the playback buffer.
    Type: Application
    Filed: October 31, 2023
    Publication date: May 16, 2024
    Inventors: Je-Won LEE, Joon-Young JUNG, Dong-Joon CHOI, Eun-Hee HYUN
  • Publication number: 20240155014
    Abstract: Disclosed herein are a hybrid download method and apparatus for multiview streaming. The hybrid download method includes requesting a group download for an n?1-th segment from a server, playing an n?3-th segment at a viewpoint VP1 of a viewer, when a group download request for the n?1-th segment is completed, making a group download request for an n-th segment, when a change in a viewpoint of the viewer occurs at a time at which an n?2-th segment is played, playing a low-quality n?2-th segment at a viewpoint VP3, when the group download for the n-th segment is completed, requesting a single download for a high-quality n?1-th segment corresponding to the viewpoint VP3 from the server, and when the single download for the high-quality n?1-th segment corresponding to the viewpoint VP3 is completed, playing the high-quality n?1-th segment at the viewpoint VP3.
    Type: Application
    Filed: November 7, 2023
    Publication date: May 9, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joon-Young JUNG, Je-Won LEE, Dong-Joon CHOI, Eun-Hee HYUN
  • Patent number: 11882481
    Abstract: Disclosed are an apparatus and method for providing an offloading service. A method of providing an offloading service according to an example embodiment includes streaming, to a user terminal including a cellular network receiver and a broadcast network receiver, media content data through a cellular network, transmitting, to the user terminal, an offloading service providing signal for activating the broadcast network receiver of the user terminal through the cellular network, transmitting, to the user terminal, a broadcast signal including connection information of a broadcast network to which the user terminal is to be connected so as to receive the media content data, through the cellular network, and broadcasting the media content data through the broadcast network.
    Type: Grant
    Filed: April 12, 2022
    Date of Patent: January 23, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon Choul Kim, Sung Ik Park, Jae-young Lee, Hyun-Jeong Yim, Namho Hur, Dong Joon Choi
  • Publication number: 20230318679
    Abstract: Disclosed herein is a method for signal configuration. The method may include evenly dividing, by a signal-bit configuration block, data or information forming signal bits or a signal bitstring and transferring the same to N multiple channels; mapping, by a first spatial path configuration block, a coded bitstring, which is generated through coding and signal processing of the data or information forming the signal bits or the signal bitstring, to cells corresponding to M antennas; and configuring, by a frequency path configuration block, the transmission paths of the cells.
    Type: Application
    Filed: March 27, 2023
    Publication date: October 5, 2023
    Inventors: Jung-Sun UM, Sung-Ik PARK, Hoi-Yoon JUNG, Dong-Joon CHOI, Nam-Ho HUR
  • Publication number: 20230283333
    Abstract: Disclosed herein are an apparatus and method for channel bonding-based multi-antenna signal transmission in a broadcasting system. An apparatus for channel bonding-based multi-antenna signal transmission includes an input formatting unit for converting input data into a Physical Layer Pipe (PLP), a stream partitioning unit for partitioning the PLP into pieces of data to be transmitted to two or more channels, respectively, and two or more transmission units for transmitting the pieces of data resulting from partitioning to corresponding channels through multiple antennas.
    Type: Application
    Filed: March 1, 2023
    Publication date: September 7, 2023
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hoi-Yoon JUNG, Sung-Ik PARK, Jae-Hyun SEO, Bo-Mi LIM, Dong-Joon CHOI, Nam-Ho HUR, Jeong-Chang KIM
  • Patent number: 11722355
    Abstract: Disclosed herein are an apparatus and method for transmitting and receiving a 4-layer layered-division multiplexing (LDM) signal. An apparatus for transmitting a 4-layer layered-division multiplexing signal includes a layered-division multiplexing modulation unit for generating a 3-layer layered-division multiplexing signal by performing layered-division multiplexing modulation on three layer signals and generating a 4-layer layered-division multiplexing signal by inserting a Pseudo-random Noise (PN) sequence into the 3-layer layered-division multiplexing signal, a pilot insertion unit for inserting a pilot into the 4-layer layered-division multiplexing signal, and a transmission unit for transmitting the 4-layer layered-division multiplexing signal.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: August 8, 2023
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jae-Hwui Bae, Young-Su Kim, Dong-Joon Choi, Nam-Ho Hur
  • Publication number: 20230199267
    Abstract: An adaptive multi-view streaming processing method and apparatus for a multi-view stream is disclosed. Specifically, disclosed herein is a method and apparatus for adaptively processing or transmitting adaptive streaming by reflecting network states and changes in transmission environments in a multi-view streaming service environment where several or more multiple videos are simultaneously transmitted at an arbitrary moment. An adaptive streaming processing method for a multi-view stream may comprise selecting and downloading an i-th segment of a main view stream with a first quality level, inferring a size of an i-th segment of downloadable neighboring view streams based on a download time and transfer rate of the i-th segment of the main view stream, and selecting a second quality level corresponding to the inferred size of the i-th segment of the neighboring view streams and downloading the i-th segment of the neighboring view streams based on the selected second quality level.
    Type: Application
    Filed: August 25, 2022
    Publication date: June 22, 2023
    Inventors: Eun Hee HYUN, Kwan Woong RYU, Je Won LEE, Joon Young JUNG, Dong Joon CHOI
  • Publication number: 20230144522
    Abstract: According to an embodiment of the present disclosure, there is provided a method and apparatus for transmitting/receiving a digital broadcast. The method for transmitting a digital broadcast, the method comprising: configuring AV data; configuring broadcast data; configuring application signaling information (ASI) by considering at least one of the AV data and the broadcast data or combination thereof; configuring an MPEG-based transport stream by multiplexing the AV data, the broadcast data and the ASI; and transmitting the MPEG-based transport stream, wherein the ASI includes data for driving an application executed by a broadcast receiver.
    Type: Application
    Filed: September 8, 2022
    Publication date: May 11, 2023
    Inventors: Joon Young JUNG, Je Won LEE, Dong Joon CHOI
  • Publication number: 20220330095
    Abstract: Disclosed are an apparatus and method for providing an offloading service. A method of providing an offloading service according to an example embodiment includes streaming, to a user terminal including a cellular network receiver and a broadcast network receiver, media content data through a cellular network, transmitting, to the user terminal, an offloading service providing signal for activating the broadcast network receiver of the user terminal through the cellular network, transmitting, to the user terminal, a broadcast signal including connection information of a broadcast network to which the user terminal is to be connected so as to receive the media content data, through the cellular network, and broadcasting the media content data through the broadcast network.
    Type: Application
    Filed: April 12, 2022
    Publication date: October 13, 2022
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: SOON CHOUL KIM, Sung Ik PARK, Jae-young LEE, Hyun-Jeong YIM, Namho HUR, Dong Joon CHOI
  • Publication number: 20220312468
    Abstract: An operation method of a terminal in a communication system may comprise: receiving downlink control information (DCI) for scheduling uplink transmission from a base station; identifying a communication node initiating a channel occupancy time associated with the uplink transmission based on a channel access parameter included in the DCI; and performing the uplink transmission scheduled by the DCI within the channel occupancy time initiated by the communication node, wherein the communication node is the terminal or the base station.
    Type: Application
    Filed: March 17, 2022
    Publication date: September 29, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hoi Yoon JUNG, Sung Ik PARK, Nam Ho HUR, Heung Mook KIM, Dong Joon CHOI
  • Patent number: 11403512
    Abstract: Disclosed herein are an apparatus and method for detecting a broadcast signal. The apparatus includes a bootstrap detection unit for detecting whether a bootstrap signal is included in a received broadcast signal based on a preset first bootstrap window and a machine-learning method, a bootstrap offset estimation unit for searching the broadcast signal for the start point of the bootstrap signal using a preset second bootstrap window, estimating a bootstrap offset based on the machine-learning method, and estimating bootstrap symbols from the bootstrap offset, and a demodulation unit for demodulating information included in the broadcast signal from the bootstrap symbols based on the machine-learning method.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: August 2, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Myung-Sun Baek, Jin-Hyuk Song, Byung-Jun Bae, Dong-Joon Choi
  • Publication number: 20220174253
    Abstract: An image receiving method includes receiving, from a plenoptic server, a high-quality image stream of a first viewpoint; requesting, from the plenoptic server, information on a second viewpoint to be shifted when a user's view is shifted, and requesting, from an edge server, a medium-quality image stream of the shifted second viewpoint; receiving, from the edge server, the medium-quality image stream of the second viewpoint and playing the received medium-quality image stream; and receiving information on the second viewpoint and subsequently playing a high-quality image stream of the second viewpoint received from the plenoptic server.
    Type: Application
    Filed: November 30, 2021
    Publication date: June 2, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon Choul KIM, Joon Young JUNG, Dong Joon CHOI
  • Patent number: 11343786
    Abstract: Disclosed herein are a method for broadcast gateway signaling using a cloud network and an apparatus for the same. The method includes generating an outer packet corresponding to the outer layer of a tunneling system using an inner packet corresponding to the inner layer of the tunneling system, generating a header of the outer packet, and transmitting the outer packet to a transmitter through a Studio-to-Transmitter Link (STL). The header includes an STL propagation delay time field indicating a reception wait time for an STL stream corresponding to the outer packet.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: May 24, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon-Choul Kim, Jae-Young Lee, Hye-Ju Oh, Hyun-Jeong Yim, Dong-Joon Choi
  • Patent number: 11343062
    Abstract: Disclosed herein are an apparatus and method for removing a self-interference signal. The apparatus includes one or more processors and executable memory for storing at least one program executed by the one or more processors. The at least one program receives an upstream signal for removing self-interference, generates a downstream signal for channel estimation, replicates a self-interference signal in a time domain and a self-interference signal in a frequency domain using the upstream signal and the downstream signal, and removes the self-interference signal from the upstream signal using the replicated self-interference signal in the time domain and the replicated self-interference signal in the frequency domain.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: May 24, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Je-Won Lee, Joon-Young Jung, Dong-Joon Choi