Patents by Inventor Seog Choi

Seog 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).

  • Patent number: 11322836
    Abstract: The present disclosure provides a shield wall for shielding multiple individual antenna modules of a massive MIMO antenna from each other. A shield wall according to at least one embodiment of the present disclosure is formed by a plurality of staple-shaped unit partitions arrayed longitudinally of the shield wall, wherein the unit partitions are designed to have optimal widths and heights according to the frequency band in use, and are arranged at a predetermined interval or less with reference to the frequency band in use, thereby providing an antenna structure which satisfies both the X-POL isolation and CO-POL isolation characteristics and can be easily fabricated in a compact, lightweight design.
    Type: Grant
    Filed: July 9, 2020
    Date of Patent: May 3, 2022
    Assignee: KMW INC.
    Inventors: Inho Kim, Oh-seog Choi, Hyoung-seok Yang, Jeong Uk Park, Jin Suk Seo
  • Patent number: 11289805
    Abstract: The preset invention relates to a dual polarized antenna and an antenna array and, more particularly, to a dual polarized antenna comprising: a top portion having a radiation patch; a bottom portion forming a probe; and side portions formed along the outer peripheral edge of the top portion so as to have a predetermined height, wherein the side portions include a cup-shaped aluminum structure, and the top portion, the bottom portion, and the side portions are formed in an integrated form.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: March 29, 2022
    Assignee: KMW INC.
    Inventors: Yong Won Seo, In Ho Kim, Hyoung Seok Yang, Oh Seog Choi
  • Publication number: 20220077593
    Abstract: The present disclosure provides a dual-polarized antenna, which is advantageous for a reduction in size by significantly reducing the complexity of a structure while satisfying a Cross Polarization ratio (CPR) characteristic and an isolation characteristic, that is, advantages of a dual feed, by enabling a dual feed using a shift series feed even without another structure in one antenna structure.
    Type: Application
    Filed: November 16, 2021
    Publication date: March 10, 2022
    Applicant: KMW INC.
    Inventors: Su Won LEE, Yong Won SEO, Oh Seog CHOI, Young Chan MOON
  • Publication number: 20220059951
    Abstract: The present disclosure includes, in a dual polarized omni-directional antenna and a base station including the same, a plurality of radiating elements disposed to be spaced apart in one direction by the dual polarized omni-directional antenna, and a feed line for providing a feed signal to the plurality of radiating elements, and the plurality of radiating elements include a first radiator for generating one polarization of dual polarization, and a second radiator for generating the other polarization of the dual polarization, respectively, the first radiator is prepared on a first surface, and the second radiator is prepared on a second surface, and a main lobe direction of the first radiator and a main lobe direction of the second radiator are different directions from each other.
    Type: Application
    Filed: September 2, 2021
    Publication date: February 24, 2022
    Applicant: KMW INC.
    Inventors: Duk Yong Kim, Young Chan Moon, In Ho Kim, Oh Seog Choi
  • Publication number: 20220052750
    Abstract: Disclosed are a spatial multiplexing method and apparatus using polarization in a multi-beam system. As the spatial multiplexing method using polarization in a multi-beam system, an embodiment of the present invention provides a spatial multiplexing method including determining different phases and different polarizations to be applied to a first beam and a second beam, precoding a signal so that the first beam and the second beam have the determined different phases, and converting polarization of the precoded signal so that the first beam and the second beam have the determined different polarizations.
    Type: Application
    Filed: October 29, 2021
    Publication date: February 17, 2022
    Applicant: KMW INC.
    Inventors: Tae Youl OH, Joon Hyong SHIM, Min Seon YUN, Jae Young CHOI, Kyung Hoon KWON, Young Chan MOON, Oh Seog CHOI
  • Patent number: 11114772
    Abstract: The present disclosure includes, in a dual polarized omni-directional antenna and a base station including the same, a plurality of radiating elements disposed to be spaced apart in one direction by the dual polarized omni-directional antenna, and a feed line for providing a feed signal to the plurality of radiating elements, and the plurality of radiating elements include a first radiator for generating one polarization of dual polarization, and a second radiator for generating the other polarization of the dual polarization, respectively, the first radiator is prepared on a first surface, and the second radiator is prepared on a second surface, and a main lobe direction of the first radiator and a main lobe direction of the second radiator are different directions from each other.
    Type: Grant
    Filed: August 26, 2019
    Date of Patent: September 7, 2021
    Assignee: KMW INC.
    Inventors: Duk Yong Kim, Young Chan Moon, In Ho Kim, Oh Seog Choi
  • Patent number: 11024796
    Abstract: Provided are an ultrasonic probe and a method of manufacturing the same. The method includes: forming a plurality of grooves by removing regions of a first insulating layer and a first silicon wafer from a first substrate including the first silicon wafer and the first insulating layer; bonding a second substrate including a second silicon wafer, a second insulating layer, and a silicon thin layer to the first substrate, such that the plurality of grooves turn into a plurality of cavities; removing the second silicon wafer from the second substrate; forming transducer cells on regions of the second insulating layer corresponding to the plurality of cavities; and forming a plurality of unit substrates by cutting the first substrate, the silicon thin layer, and the second insulating layer.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG MEDISON CO., LTD.
    Inventors: Young-il Kim, Jong-keun Song, Tae-ho Jeon, Min-seog Choi
  • Publication number: 20210126358
    Abstract: The preset invention relates to a dual polarized antenna and an antenna array and, more particularly, to a dual polarized antenna comprising: a top portion having a radiation patch; a bottom portion forming a probe; and side portions formed along the outer peripheral edge of the top portion so as to have a predetermined height, wherein the side portions include a cup-shaped aluminum structure, and the top portion, the bottom portion, and the side portions are formed in an integrated form.
    Type: Application
    Filed: November 10, 2020
    Publication date: April 29, 2021
    Applicant: KMW INC.
    Inventors: Yong Won SEO, In Ho KIM, Hyoung-Seok YANG, Oh Seog CHOI
  • Publication number: 20210098872
    Abstract: A base station apparatus of an antenna-integrated type for use in a mobile communication network, includes an enclosure configured to have electric and electronic devices for processing signals in receipt and to form at least a part of an exterior of the base station, and an antenna configured to be installed so as to be tiltable on one surface of the enclosure, to have an outer contour defined by a radome, to include at least one radiating element for transmitting and receiving a radio signal, and an enclosure fixing device configured to fixedly mount the enclosure to an external support, and an antenna fixing apparatus configured to fixedly install the antenna on the enclosure so that the antenna is adjustably tilted with respect to the enclosure.
    Type: Application
    Filed: December 15, 2020
    Publication date: April 1, 2021
    Applicant: KMW INC.
    Inventors: In-Ho KIM, Oh-Seog CHOI, Hee KIM
  • Patent number: 10910700
    Abstract: The present invention relates to an omnidirectional antenna for a mobile communication service, comprising: a plurality of radiation elements disposed on a horizontal surface with a mutually same angle so as to respectively radiate beams; and a power supply unit for distributing and providing a power supply signal to each of the plurality of radiation elements, wherein each of the plurality of radiation elements has a structure in which a horizontal polarization dipole radiation unit having two radiation arms is coupled to a vertical polarization dipole radiation unit having two radiation arms.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 2, 2021
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Oh-Seog Choi, In-Ho Kim, Hyoung-Seok Yang
  • Patent number: 10897078
    Abstract: A base station apparatus of an antenna-integrated type for use in a mobile communication network, includes an enclosure configured to have electric and electronic devices for processing signals in receipt and to form at least a part of an exterior of the base station, and an antenna configured to be installed so as to be tiltable on one surface of the enclosure, to have an outer contour defined by a radome, to include at least one radiating element for transmitting and receiving a radio signal, and an enclosure fixing device configured to fixedly mount the enclosure to an external support, and an antenna fixing apparatus configured to fixedly install the antenna on the enclosure so that the antenna is adjustably tilted with respect to the enclosure.
    Type: Grant
    Filed: July 19, 2018
    Date of Patent: January 19, 2021
    Assignee: KMW INC.
    Inventors: In-Ho Kim, Oh-Seog Choi, Hee Kim
  • Publication number: 20200343629
    Abstract: The present disclosure provides a shield wall for shielding multiple individual antenna modules of a massive MIMO antenna from each other. A shield wall according to at least one embodiment of the present disclosure is formed by a plurality of staple-shaped unit partitions arrayed longitudinally of the shield wall, wherein the unit partitions are designed to have optimal widths and heights according to the frequency band in use, and are arranged at a predetermined interval or less with reference to the frequency band in use, thereby providing an antenna structure which satisfies both the X-POL isolation and CO-POL isolation characteristics and can be easily fabricated in a compact, lightweight design.
    Type: Application
    Filed: July 9, 2020
    Publication date: October 29, 2020
    Applicant: KMW INC.
    Inventors: Inho Kim, Oh-seog Choi, Hyoung-seok Yang, Jeong Uk Park, Jin Suk Seo
  • Patent number: 10764570
    Abstract: The present invention relates to a rotating inspector for a camera module. The rotating inspector includes a rotary table having one or more socket units on which the camera module mounted; a plurality of inspection devices disposed around the rotary table to inspect the camera module; test boards disposed on the rotary table, each of test boards being connected to the one or more socket units, respectively to control the camera module and generate inspection data for the camera module; a first data processing unit disposed on the rotary table and analyzing the inspection data to generate result data for possible defects of the camera module; a second data processing unit disposed outside the rotary table, the second data processing unit being configured to receive the result data and to sort and store the received data; and a data transmission unit transmitting the result data generated in the first data processing unit to the second data processing unit.
    Type: Grant
    Filed: January 20, 2019
    Date of Patent: September 1, 2020
    Assignee: ISMedia Co., Ltd.
    Inventors: Seong Cheol Hong, Dong Choon Kim, Sung Oh Yim, Yong Woo Han, Eun Seok Shin, Cheon Su Mun, Min Seog Choi
  • Patent number: 10697838
    Abstract: Provided are a filter element and a method of preparing a filter element. The filter element includes a pattern substrate having a first channel formed on one surface and a second channel formed on the other surface and including a first base and a second base which have different liquid permeabilities; a first liquid metal pattern disposed in the first channel; a second liquid metal pattern disposed in the second channel and at least partially overlapping the first liquid metal pattern; and a contactor configured to invade in the first base and the second base and electrically connect the first liquid metal pattern to the second liquid metal pattern.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: June 30, 2020
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Sung Bok Kang, Jong Seok Kim, Hyeun Seog Choi
  • Publication number: 20190379141
    Abstract: The present disclosure includes, in a dual polarized omni-directional antenna and a base station including the same, a plurality of radiating elements disposed to be spaced apart in one direction by the dual polarized omni-directional antenna, and a feed line for providing a feed signal to the plurality of radiating elements, and the plurality of radiating elements include a first radiator for generating one polarization of dual polarization, and a second radiator for generating the other polarization of the dual polarization, respectively, the first radiator is prepared on a first surface, and the second radiator is prepared on a second surface, and a main lobe direction of the first radiator and a main lobe direction of the second radiator are different directions from each other.
    Type: Application
    Filed: August 26, 2019
    Publication date: December 12, 2019
    Applicant: KMW INC.
    Inventors: Duk Yong Kim, Young Chan Moon, In Ho Kim, Oh Seog Choi
  • Publication number: 20190313088
    Abstract: The present invention relates to a rotating inspector for a camera module. The rotating inspector includes a rotary table having one or more socket units on which the camera module mounted; a plurality of inspection devices disposed around the rotary table to inspect the camera module; test boards disposed on the rotary table, each of test boards being connected to the one or more socket units, respectively to control the camera module and generate inspection data for the camera module; a first data processing unit disposed on the rotary table and analyzing the inspection data to generate result data for possible defects of the camera module; a second data processing unit disposed outside the rotary table, the second data processing unit being configured to receive the result data and to sort and store the received data; and a data transmission unit transmitting the result data generated in the first data processing unit to the second data processing unit.
    Type: Application
    Filed: January 20, 2019
    Publication date: October 10, 2019
    Applicant: ISMEDIA Co., Ltd.
    Inventors: Seong Cheol HONG, Dong Choon KIM, Sung Oh YIM, Yong Woo HAN, Eun Seok SHIN, Cheon Su MUN, Min Seog CHOI
  • Publication number: 20190296423
    Abstract: The present invention relates to an omnidirectional antenna for a mobile communication service, comprising: a plurality of radiation elements disposed on a horizontal surface with a mutually same angle so as to respectively radiate beams; and a power supply unit for distributing and providing a power supply signal to each of the plurality of radiation elements, wherein each of the plurality of radiation elements has a structure in which a horizontal polarization dipole radiation unit having two radiation arms is coupled to a vertical polarization dipole radiation unit having two radiation arms.
    Type: Application
    Filed: June 3, 2019
    Publication date: September 26, 2019
    Inventors: Young-Chan Moon, Oh-Seog Choi, In-Ho Kim, Hyoung-Seok Yang
  • Patent number: 10403974
    Abstract: A compact antenna apparatus for a mobile communication system includes: a radome having at least one frequency band radiating element provided therein; at least one phase shifter portion which is provided in an inner side of the radome and which is connected to the radiating element to adjust a tilting angle of the radiating element; and a rotary knob portion which is provided so as to be exposed to the outside of the radome and which is directly coupled to the phase shifter portion to drive a phase shifter.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: September 3, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, In-Ho Kim, Oh-Seog Choi, Hyoung-Seok Yang, Sang-Hyeong Kim, Hee Kim, Hye-Mi Jung
  • Patent number: 10355342
    Abstract: The present invention relates to an omnidirectional antenna for a mobile communication service, comprising: a plurality of radiation elements disposed on a horizontal surface with a mutually same angle so as to respectively radiate beams; and a power supply unit for distributing and providing a power supply signal to each of the plurality of radiation elements, wherein each of the plurality of radiation elements has a structure in which a horizontal polarization dipole radiation unit having two radiation arms is coupled to a vertical polarization dipole radiation unit having two radiation arms.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: July 16, 2019
    Assignee: KMW INC.
    Inventors: Young-Chan Moon, Oh-Seog Choi, In-Ho Kim, Hyoung-Seok Yang
  • Patent number: 10349835
    Abstract: Provided are an optical switch, an optical probe including the optical switch, and a medical imaging apparatus including the optical probe. The optical probe includes a probe body that is configured to be insertable into a body cavity, and an optical switch that is disposed in the probe body and includes a first region formed of a material having a first refractive index, and a second region that forms an interface with the first region and is configured to have a fluid is introduced into the second region, wherein the optical switch is configured to change a path of propagation of incident light according to a second refractive index of the second region.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: July 16, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-wan Lee, Woon-bae Kim, Eun-sung Lee, Jong-hyeon Chang, Min-seog Choi, Hyun Choi