Patents by Inventor Seung Keun Park

Seung Keun Park 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: 20220204671
    Abstract: The present invention relates to a fluorinated acrylate-based copolymer and to a photosensitive resin composition comprising the same. The copolymer can have excellent water repellency even with a relatively low content of fluorine by introducing a non-polar ring-containing unit, so that it can prevent coating imbalance and decreases in the pattern strength that may occur when the fluorine content is high.
    Type: Application
    Filed: December 6, 2021
    Publication date: June 30, 2022
    Inventors: Kyung-Jae Park, Seung-Keun Kim, Kyu-Cheol Lee
  • Publication number: 20220208406
    Abstract: An apparatus for saturating a buffer material includes a jig for fixing and supporting a buffer material to prevent an increase of a volume of the buffer material. The jig is provided to surround at least a portion of the buffer material. The apparatus further includes a case having a space in which the jig supporting the buffer material is accommodated, a supply unit configured to supply water vapor into the case to adjust a saturation level of the buffer material, and a control unit configured to control the supply unit to stop the supply of water vapor when the saturation level of the buffer material reaches a preset critical saturation level.
    Type: Application
    Filed: July 23, 2021
    Publication date: June 30, 2022
    Inventors: Seok Yoon, Seung-Hun Park, Geon Young Kim, Dong Keun Cho
  • Publication number: 20220167927
    Abstract: An apparatus for estimating bio-information may include: a bio-signal acquirer configured to acquire a bio-signal; and a processor configured to extract one or more first feature values from the bio-signal, determine a scale factor based on the first feature values, and to estimate bio-information based on the scale factor and the first feature values.
    Type: Application
    Filed: February 18, 2022
    Publication date: June 2, 2022
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Soon PARK, Ui Kun KWON, Yunseo KU, Seung Woo NOH, Seung Keun YOON, Dae Geun JANG
  • Publication number: 20220173158
    Abstract: A display device includes a first subpixel and a second subpixel, wherein the first subpixel includes a first light source unit including a plurality of first light-emitting elements configured to emit first light having a center wavelength of a first wavelength, the second subpixel includes a second light source unit including a plurality of second light-emitting elements configured to emit second light having a center wavelength of a second wavelength, the first light source unit includes first to nth light-emitting groups that are connected in series, each of the groups including the plurality of first light-emitting elements, the second light source unit includes first to mth light-emitting groups that are connected in series and each of the groups includes the plurality of second light-emitting elements, where n and m are natural numbers, and the second wavelength is different from the first wavelength.
    Type: Application
    Filed: November 5, 2021
    Publication date: June 2, 2022
    Inventors: Seung Geun LEE, Byung Ju LEE, Hoo Keun PARK, Chul Jong YOO, Dong Eon LEE
  • Publication number: 20220163887
    Abstract: The colored photosensitive resin composition of the present invention maintains excellent resolution, visibility, and the like while it has excellent reflectance RSCI measured by the SCI (specular component included) method, reflectance RSCE measured by the SCE (specular component excluded) method, and the ratio between them (RSCE/RSCI), and has a uniform film thickness in an appropriate range. Thus, it can be formed into a multilayer cured film that simultaneously satisfies such physical properties as a high reflectance and a high light-shielding property. In addition, when a cured film is formed from the composition, it is possible to form a pattern on a multilayer film in a single development process. Thus, it can be advantageously used for a quantum dot display device.
    Type: Application
    Filed: November 17, 2021
    Publication date: May 26, 2022
    Inventors: Seung-Keun KIM, Kyung-Jae Park
  • Publication number: 20210360420
    Abstract: Provided is a method and apparatus for determining an operating condition for frequency coexistence and an operating condition determining method includes a method of calculating and transferring an inference-free available frequency and an output level to an existing radio station that operates and needs to be protected or a method of calculating a channel access parameter for sharing a frequency with a heterogeneous device, a network, or a system.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 18, 2021
    Inventors: Jung Sun UM, Bong-Su KIM, Igor KIM, Seung Keun PARK
  • Patent number: 11172448
    Abstract: An operation method of a communication node for supporting a low power mode in a wireless LAN is disclosed. A method for operating an access point comprises: a step of transmitting a CTS frame to protect transmission of a wake-up packet, a step of transmitting the wake-up packet to wake up a station including PCR and WURx; and a step of transmitting a data frame to the station. Therefore, the performance of the communication system can be improved.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: November 9, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Hyun Hwang, Seung Keun Park, Yong Ho Kim
  • Patent number: 11153818
    Abstract: Disclosed are a method and an apparatus for initial negotiation in a wireless LAN. An operating method of a station in a communication system comprises the steps of: generating a probe request frame including WUR capability information of the station which supports a WUR mode; transmitting the probe request frame; and receiving a probe response frame from an access point having received the probe request frame. Therefore, the performance of the communication system can be improved.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: October 19, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Hyun Hwang, Igor Kim, Seung Keun Park
  • Patent number: 11140690
    Abstract: A method for transmitting an uplink signal in an unlicensed band by a terminal is provided. The terminal receives first scheduling information that schedules one or more uplink subframes, from a base station in a first downlink subframe. The terminal receives second scheduling information that determines a transmission time point of the uplink signal, from the base station in a second downlink subframe after the first downlink subframe. The terminal transmits the uplink signal in a first uplink subframe corresponding to the transmission time point among the one or more uplink subframes.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: October 5, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoiyoon Jung, Sungjin Yoo, Seung Keun Park
  • Publication number: 20210274509
    Abstract: A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.
    Type: Application
    Filed: February 26, 2021
    Publication date: September 2, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Bong-Su Kim, Igor Kim, Seung Keun Park
  • Publication number: 20210266825
    Abstract: A method and a device for searching for an access point in a wireless LAN are disclosed. An operating method of a station comprising a PCR and a WUR comprises the steps of: allowing the WUR operating in a wake up state to receive a WUR beacon frame from an access point; shifting an operating state of the PCR from a sleep state to the wake up state, when the WUR beacon frame is received; and allowing the PCR operating in the wake up state to communicate with the access point. Therefore, the performance of a communication system can be improved.
    Type: Application
    Filed: May 6, 2021
    Publication date: August 26, 2021
    Inventors: Sung Hyun HWANG, Igor KIM, Seung Keun PARK
  • Patent number: 11050506
    Abstract: An apparatus for analyzing a frequency use status may obtain a candidate radio network temporary identifier (RNTI) using downlink control information (DCI), estimate an active RNTI from the candidate RNTI, and analyze a frequency use status using the active RNTI.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: June 29, 2021
    Assignee: Electronics and Telecommunications Research institute
    Inventors: Jung Sun Um, Igor Kim, Seung Keun Park, Hyeyeon Kwon, Yunbae Kim, Young Hwan Lee
  • Patent number: 11044747
    Abstract: Disclosed is a method for scheduling an uplink transmission in a communication network. A terminal operation method comprises the steps of: detecting a control channel of a subframe #n transmitted from a base station; receiving an uplink grant from the control channel; and transmitting, to the base station, a plurality of subframes scheduled by the uplink grant. Thus, the performance of the communication network may be improved.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: June 22, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoi Yoon Jung, Seung Keun Park, Sung Jin Yoo
  • Patent number: 11032758
    Abstract: A method and a device for searching for an access point in a wireless LAN are disclosed. An operating method of a station comprising a PCR and a WUR comprises the steps of: allowing the WUR operating in a wake up state to receive a WUR beacon frame from an access point; shifting an operating state of the PCR from a sleep state to the wake up state, when the WUR beacon frame is received; and allowing the PCR operating in the wake up state to communicate with the access point. Therefore, the performance of a communication system can be improved.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 8, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Hyun Hwang, Igor Kim, Seung Keun Park
  • Publication number: 20210168853
    Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
    Type: Application
    Filed: February 15, 2021
    Publication date: June 3, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun UM, Hoiyoon JUNG, Seung Keun PARK, Sungjin YOO
  • Publication number: 20210127282
    Abstract: A resource usage measuring method and an apparatus performing the same. The resource usage measuring method includes measuring a resource usage in a frequency domain based on a demodulation reference signal (DM-RS) transmitted from a base station, and measuring a resource usage in a time domain based on the DM-RS.
    Type: Application
    Filed: October 16, 2020
    Publication date: April 29, 2021
    Inventors: Jung Sun UM, Seung Keun PARK, Bong-Su KIM, Igor KIM
  • Publication number: 20210092678
    Abstract: Disclosed is a method for operating a communication node supporting a low power mode in a wireless LAN. A method for operating a station, which includes a PCR and a WURx, comprises the steps of: allowing the WURx, which operates in a wake-up state, to receive a wake-up packet from an access point; transitioning an operating state of the PCR from a sleep state to the wake-up state when the wake-up packet is received; allowing the PCR, which operates in the wake-up state, to receive a data frame from an access point; and allowing the PCR to transmit, to the access point, a response to the data frame.
    Type: Application
    Filed: December 8, 2020
    Publication date: March 25, 2021
    Inventors: Yong Ho KIM, Sung Hyun HWANG, Igor KIM, Seung Keun PARK
  • Patent number: 10932294
    Abstract: The present invention relates to a method for transmitting uplink data in a spectrum sharing wireless communication system wherein, in order to enhance uplink transmission efficiency in an LTE-U service, clear channel assessment (CCA) is performed on a user terminal so as to consider the hidden node problem, and channel occupation based on an uplink signal of another terminal is considered, wherein applied are: a method for generating and transmitting a random backoff counter value at a base station so that all terminals can equally use a channel connection parameter needed for transmitting an uplink subframe in an unlicensed band; and a downlink controlling method for scheduling an uplink multi-subframe.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: February 23, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jung Sun Um, Sung Jin Yoo, Hoi Yoon Jung, Seung Keun Park
  • Patent number: 10925085
    Abstract: Disclosed herein is a method for transmitting, by a terminal, a sounding reference signal (SRS). The terminal receives a grant for uplink multiple subframes from a base station. The terminal determines a first subframe for an SRS transmission of the terminal among the uplink multiple subframes on the basis of SRS transmission position information received from the base station. Further, the terminal transmits the SRS in the first subframe.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: February 16, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jung Sun Um, Hoiyoon Jung, Seung Keun Park, Sungjin Yoo
  • Patent number: 10897739
    Abstract: Disclosed is a method for operating a communication node supporting a low power mode in a wireless LAN. A method for operating a station, which includes a PCR and a WURx, comprises the steps of: allowing the WURx, which operates in a wake-up state, to receive a wake-up packet from an access point; transitioning an operating state of the PCR from a sleep state to the wake-up state when the wake-up packet is received; allowing the PCR, which operates in the wake-up state, to receive a data frame from an access point; and allowing the PCR to transmit, to the access point, a response to the data frame.
    Type: Grant
    Filed: August 23, 2017
    Date of Patent: January 19, 2021
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, KOREA NATIONAL UNIVERSITY OF TRANSPORTATION INDUSTRY—ACADEMIC COOPERATION FOUNDATION
    Inventors: Yong Ho Kim, Sung Hyun Hwang, Igor Kim, Seung Keun Park