Patents by Inventor Hwan Yoo

Hwan Yoo 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: 20210389638
    Abstract: The embodiments relate to an electrochromic device having flexibility while achieving an excellent light transmission variable function based on the electrochromic principle. The electrochromic device comprises a light transmission variable structure interposed between a first base layer and a second base layer, wherein the light transmission variable structure comprises a first chromic layer and a second chromic layer, and the value of ?TTd24 as defined in Equation (1) is 3% or less.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 16, 2021
    Inventors: Seung Bae OH, Yong Sang LA, Seong Hwan LEE, Jongmin SHIM, Il Hwan YOO, Byeong Uk AHN
  • Publication number: 20210382342
    Abstract: The embodiments relate to an electrochromic device having flexibility while achieving an excellent light transmission variable function based on the electrochromic principle. The flexible electrochromic device comprises a first base layer; a first barrier layer on the first base layer; a light transmission variable structure on the first barrier layer; a second barrier layer on the light transmission variable structure; and a second base layer on the second barrier layer.
    Type: Application
    Filed: June 7, 2021
    Publication date: December 9, 2021
    Inventors: Byeong Uk AHN, Yong Sang LA, Seong Hwan LEE, Il Hwan YOO, Seung Bae OH
  • Publication number: 20210361192
    Abstract: The present disclosure relates to a hand rehabilitation exercise device, including: a finger movement sensing sensor sensing a movement of a finger; and a finger worn unit to which the finger movement sensing sensor is attached/detached, and worn on the finger.
    Type: Application
    Filed: August 6, 2021
    Publication date: November 25, 2021
    Applicant: NEOFECT Co., Ltd.
    Inventors: Byung Geol PARK, Young Geun CHOI, Kyung Hwan YOO, Sung Jun ROH, Hyun Soo KIM, Joon Ha JEON
  • Publication number: 20210250177
    Abstract: Provided is a system for blockchain-based multi-factor security authentication between a mobile terminal and an IoT device, the system including: the IoT device; a user terminal remotely controlling operation of the IoT device; and an authentication server approving control of the IoT device by the user terminal, wherein the authentication server has: a first function of recording information related to a registration hash value in a blockchain; a second function of receiving an authentication hash value generated by the user terminal when approval for control of the IoT device is requested, and determining validity of the authentication hash value by using the information related to the registration hash value recorded in the blockchain; and a third function of approving control of the IoT device by the user terminal when the authentication hash value has validity as a result of the determination.
    Type: Application
    Filed: September 3, 2018
    Publication date: August 12, 2021
    Applicant: ICNCAST CO., LTD.
    Inventors: Yong-Hwan YOO, Bonggyeol CHOI
  • Publication number: 20210219703
    Abstract: The present invention provides a backpack structure for easily loading a large item having column shape or “T”-shape that cannot be put into a storage space of a backpack.
    Type: Application
    Filed: December 9, 2020
    Publication date: July 22, 2021
    Inventor: Ted Hwan YOO
  • Patent number: 11062526
    Abstract: A system and method for detecting and notifying access to a dangerous area in a workplace using image processing and location tracking technology are disclosed. The system includes a server configured to partition a workplace into grating sections to assign coordinates, set a dangerous object or a dangerous area, and broadcast a notification message including coordinates of the dangerous object and information on the dangerous area, and smart glasses configured to display a grating of an adjacent dangerous area or an adjacent dangerous object in an augmented reality mode by using the coordinates of the dangerous object or the information on the dangerous area that are received.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: July 13, 2021
    Assignee: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Young-Hwan Yoo, Joonyoung Lim, Youngjin Shin
  • Patent number: 11061968
    Abstract: A method of recommending a query word using a domain property includes receiving a search keyword from a terminal of a user, the search keyword being input by the user; generating at least one recommendation query word concerned with the search keyword by using a property of an object of a domain when the search keyword belongs to the object of the domain; and providing the recommendation query word to the terminal of the user as an autocomplete query word for the search keyword.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: July 13, 2021
    Assignee: Naver Corporation
    Inventors: Jin-hwan Yoo, Eric Eun, Taeil Kim, Jinah Jeong, Tae Ho Lee
  • Publication number: 20210154082
    Abstract: The present invention relates to a device for assisting body movement, comprising: a pulley for winding or unwinding a wire for moving a specific body between a first position and a second position; a motor for rotating the pulley forward or backward to wind the wire on or unwind the wire from the pulley; and a stopper portion for restricting winding or unwinding of the wire so that the specific body does not move out from between the first position and the second position, wherein the stopper portion comprises: a pulley hook that protrudes to form a swing trajectory on one side of the pulley; and a stopper formed to have a predetermined arc length along the swing trajectory of the pulley hook and provided with a stopper track to which the pulley hook is movably coupled.
    Type: Application
    Filed: February 4, 2021
    Publication date: May 27, 2021
    Applicant: NEOFECT CO., LTD.
    Inventors: Byung Geol PARK, Young Geun CHOI, Seo Jeong HAN, Kyung Hwan YOO
  • Publication number: 20210121120
    Abstract: The present disclosure relates to a sensing device and a method for processing sensing data.
    Type: Application
    Filed: January 7, 2021
    Publication date: April 29, 2021
    Applicant: NEOFECT CO., LTD.
    Inventors: Young Geun CHOI, Sung Gon MOON, Byung Geol PARK, Seo Jeong HAN, Jin Young CHO, Keun Hyeok YOO, Eun Jung KIM, Do Kyeong HA, Kyung Hwan YOO
  • Patent number: 10982309
    Abstract: Disclosed are a hot-rolled galvanized steel sheet having excellent galling resistance and formability, and a method for manufacturing the same. The hot-rolled galvanized steel sheet, includes: a base steel; and a hot-rolled galvanizing layer formed on the surface of the base steel, wherein the hot-rolled galvanizing layer provides a hot-rolled galvanized steel sheet having a Mn crystallite having a size of 10 ?m or less between the resin dendrites of zinc that form sequins.
    Type: Grant
    Filed: August 22, 2017
    Date of Patent: April 20, 2021
    Assignee: POSCO
    Inventors: Sang-Heon Kim, Hyeon-Seok Hwang, Suk-Kyu Lee, Sun-Ho Jeon, Yon-Kyun Song, Bong-Hwan Yoo
  • Patent number: 10979007
    Abstract: An amplifying device includes: an amplifying circuit connected between an input terminal and an output terminal and amplifying a signal input in an amplification mode; and a bypass circuit including a filter connected to a bypass path for bypassing the amplifying circuit, wherein the bypass path is in an off-state in the amplification mode and is in an on-state in a bypass mode, and the filter bypasses an input high-frequency signal to ground, in the amplification mode.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: April 13, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyung Jun Cho, Hyun Jin Yoo, Jong Mo Lim, Hyun Hwan Yoo, Yoo Sam Na, Yoo Hwan Kim
  • Publication number: 20210086012
    Abstract: Disclosed is a rehabilitation training apparatus. The rehabilitation training apparatus includes a pair of first tracks formed parallel to each other along first axis, a second track disposed on the pair of first tracks, and moving along the first axis, and formed along second axis, a hand holder disposed on the second track, and moving along the second track, and on which at least one of hand and arm of a user is held, a stopper for a track disposed on the pair of first tracks for limiting a movement range of the second track, and a stopper for a holder disposed on the second track for limiting a movement range of the second pair of first tracks, wherein the first axis and the second axis are disposed with an inclination.
    Type: Application
    Filed: December 9, 2020
    Publication date: March 25, 2021
    Applicant: NEOFECT CO., LTD.
    Inventors: Sung Jun ROH, Hyun Soo KIM, Soo Bin LEE, Ho Yeong SONG, Ho Young BAN, Young Geun CHOI, Dae Hoon JANG, Byeong Geol PARK, Kyung Hwan YOO
  • Publication number: 20210058646
    Abstract: According to the present invention, there is provided a video signal processing method of dividing an input image on a per-block basis for encoding, the method including: determining, at a division determination step, whether to divide a current block; dividing, at a block division step, the current block into multiple sub blocks on the basis of the determination; generating block division information on division of the current block; and encoding, at an encoding step, the block division information, the current block, or the sub blocks. Examples of division of the block according to the present invention include division using N-ary tree structures, such as the quad tree structure, the binary tree structure, and/or the triple tree structure.
    Type: Application
    Filed: October 15, 2020
    Publication date: February 25, 2021
    Applicant: INDUSTRY ACADEMY COOPERATION FOUNDATION OF SEJONG UNIVERSITY
    Inventors: Yung Lyul LEE, Nam Uk KIM, Kyung Hwan KO, Young Hwan YOO
  • Patent number: 10903799
    Abstract: An amplifying apparatus includes a variable gain amplifying circuit configured to operate in a gain mode selected from a plurality of gain modes in response to a first control signal during operation in an amplification mode, a variable attenuation circuit configured to have an attenuation value that is adjusted in response to a second control signal, and a phase compensation value which compensates for a phase distortion in the selected gain mode, and a control circuit configured to control the selecting of the gain mode, the adjusting of the attenuation value and the phase compensation value, based on the first and second control signals.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: January 26, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Jin Yoo, Jong Mo Lim, Yoo Sam Na, Hyung Jun Cho, Yoo Hwan Kim, Hyun Hwan Yoo
  • Patent number: 10888726
    Abstract: Disclosed is a rehabilitation training apparatus. The rehabilitation training apparatus includes a pair of first tracks formed parallel to each other along first axis, a second track disposed on the pair of first tracks, and moving along the first axis, and formed along second axis, a hand holder disposed on the second track, and moving along the second track, and on which at least one of hand and arm of a user is held, a stopper for a track disposed on the pair of first tracks for limiting a movement range of the second track, and a stopper for a holder disposed on the second track for limiting a movement range of the second pair of first tracks, wherein the first axis and the second axis are disposed with an inclination.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: January 12, 2021
    Assignee: NEOFECT CO., LTD.
    Inventors: Sung Jun Roh, Hyun Soo Kim, Soo Bin Lee, Ho Yeong Song, Ho Young Ban, Young Geun Choi, Dae Hoon Jang, Byeong Geol Park, Kyung Hwan Yoo
  • Patent number: 10886058
    Abstract: An inductor includes a substrate, and a first coil pattern disposed on one surface of the substrate and having a spiral shape comprising a plurality of turns, wherein as the first coil pattern extends inwardly towards a center of the first coil pattern, a pattern width of the first coil pattern decreases while a center-to-center distance between two adjacent turns of the first coil pattern increases.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: January 5, 2021
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyung Jun Cho, Jong Mo Lim, Hyun Hwan Yoo, Hyun Jin Yoo, Yoo Hwan Kim, Yoo Sam Na
  • Patent number: 10860708
    Abstract: An apparatus and a method for measuring the security strength of a lock pattern applied to a terminal device are disclosed. The disclosed apparatus may include: a CCI monitoring part configured to read cache coherence information associated with a touch made over a multiple number of points implementing a lock pattern inputted by a user from a CCI (cache coherence interconnect); a computation part configured to compute a multiple number of similar lock pattern candidates by using the read cache coherence information; and a measurement part configured to measure the security strength of the inputted lock pattern by using the multiple number of similar lock pattern candidates.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: December 8, 2020
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Chuck Yoo, Young Pil Kim, See Hwan Yoo, Kyoung Woon Lee
  • Patent number: 10826442
    Abstract: An apparatus includes an amplifying circuit configured to include stacked first and second transistors, and to amplify a signal input from an input terminal during an operation in an amplifying mode, and provide the amplified signal to an output terminal, and a negative feedback circuit comprising first to nth sub-negative feedback circuits, each corresponding to a separate gain mode included in the amplifying mode, wherein the negative feedback circuit is configured to provide a variable resistance value to determine a negative feedback gain based on each of the separate gain modes.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: November 3, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyun Jin Yoo, Jong Mo Lim, Yoo Hwan Kim, Hyung Jun Cho, Hyun Hwan Yoo, Yoo Sam Na
  • Patent number: 10826151
    Abstract: A directional coupler circuit includes a signal line disposed between a first terminal and a second terminal; a coupling line comprising a first end terminal and a second end terminal, and disposed to be coupled to the signal line; a switching circuit connecting the first end terminal and a coupling port to each other to extract a first coupling signal in a first coupling mode, and connecting the second end terminal and the coupling port to extract a second coupling signal in a second coupling mode; and a phase compensating circuit configured to compensate for a phase difference between the coupling port and a first isolation port in the first coupling mode, or compensate for a phase difference between the coupling port and a second isolation port in the second coupling mode.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: November 3, 2020
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jong Mo Lim, Yoo Sam Na, Hyun Hwan Yoo, Hyun Jin Yoo, Hyung Jun Cho, Yoo Hwan Kim
  • Publication number: 20200294416
    Abstract: A pegboard of the present disclosure includes: a main device including multiple unit modules; a board plate including multiple receiving portions; and multiple pegs to be inserted into the multiple receiving portions, and the multiple unit modules include multiple sensor modules configured to sense whether the multiple pegs are inserted into the multiple receiving portions and multiple light source modules configured to output light to the multiple receiving portions.
    Type: Application
    Filed: September 27, 2018
    Publication date: September 17, 2020
    Inventors: Sung Jun ROH, Kyung Hwan YOO, Seo Jeong HAN