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: 20240103699
    Abstract: An electronic device including a touch-enabled display module configured to display a plurality of windows according to a multi-window mode; and a control module configured to displaying on the touch screen a first application window and a second application window according to the multi-window mode, alter the first application window in response to a touchscreen input received via the touch-enabled display, and automatically alter the second application window in response to the alteration of the first application window.
    Type: Application
    Filed: November 6, 2023
    Publication date: March 28, 2024
    Inventors: Doo Suk KANG, Geon Soo KIM, Dong Hyun YEOM, Pil Joo YOON, Yong Joon JEON, Bo Kun CHOI
  • Patent number: 11927890
    Abstract: A substrate processing apparatus includes a photoresist coater applying a photoresist film on a substrate, a humidifier increasing an amount of moisture in an ambient to which the photoresist film on the substrate is exposed, and an exposer irradiating the photoresist film exposed to the ambient having the increased amount of moisture with light. The humidifier is disposed between the photoresist coater and the exposer.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: March 12, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seok Heo, Cha Won Koh, Sang Joon Hong, Hyun Woo Kim, Kyung-Won Kang, Dong-Wook Kim, Kyung Won Seo, Young Il Jang, Yong Suk Choi
  • 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: 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
  • 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
  • Publication number: 20220132452
    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: Application
    Filed: February 23, 2021
    Publication date: April 28, 2022
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Soon-Choul KIM, Jae-Young LEE, Hye-Ju OH, Hyun-Jeong YIM, Dong-Joon CHOI
  • Publication number: 20210336837
    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: Application
    Filed: April 1, 2021
    Publication date: October 28, 2021
    Inventors: Jae-Hwui Bae, Young-Su Kim, Dong-Joon Choi, Nam-Ho Hur
  • Patent number: 11096030
    Abstract: Disclosed herein is a method of operating an apparatus for providing a cell broadcast service. The operating method includes receiving, by a transmission device of a broadcaster, a cell broadcast service signal containing an emergency alert from a mobile carrier; converting, by the transmission device, the cell broadcast service signal into a public warning broadcast signal; and transmitting, by the transmission device, the public warning broadcast signal to a mobile switching center or a base station.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: August 17, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Suk-Hee Cho, Byung-Jun Bae, Woong-Soo Na, Na-Yeon Kim, Dong-Joon Choi
  • Publication number: 20210211336
    Abstract: Disclosed herein are a synchronization apparatus and method for a upstream system. The synchronization apparatus for a upstream system includes one or more processors, and execution memory for storing at least one program that is executed by the one or more processors, wherein the at least one program is configured to receive a signal and calculate a first channel estimation value for the received signal using a predefined pilot, and calculate a second channel estimation value using a predefined complementary pilot and the first channel estimation value.
    Type: Application
    Filed: May 4, 2020
    Publication date: July 8, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kwan-Woong RYU, Jin-Hyuk SONG, Joon-Young JUNG, Dong-Joon CHOI
  • Publication number: 20210203471
    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: Application
    Filed: May 8, 2020
    Publication date: July 1, 2021
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Je-Won LEE, Joon-Young JUNG, Dong-Joon CHOI
  • Patent number: 11050494
    Abstract: Disclosed herein are a signal-multiplexing apparatus and method based on machine learning. The signal-multiplexing method based on machine learning, performed by a signal-multiplexing apparatus based on machine learning, including training a transmitted signal using a machine-learning technique, performing complex mapping to transmit the transmitted signal as multiple signals, receiving the multiple signals and regularizing the multiple signals based on a preset rule corresponding to the machine-learning technique, outputting an estimated value for the transmitted signal by training regularized multiple signals using the machine-learning technique, calculating a difference between the transmitted signal and the estimated value for the transmitted signal, and detecting the transmitted signal from an output value when the difference is less than or equal to a preset value.
    Type: Grant
    Filed: August 12, 2019
    Date of Patent: June 29, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Myung-Sun Baek, Joon-Young Jung, Dong-Joon Choi, Heung-Mook Kim