Patents by Inventor Seok Chang

Seok Chang 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: 20200378918
    Abstract: Disclosed is an open-junction ionic transistor which includes: a substrate; a p type gel which is formed as a polyelectrolyte gel on the substrate; an n type gel which is formed as the polyelectrolyte gel on the substrate and having one side contacting one side of the p type gel; a first reservoir contacting the other side of the p type gel; a second reservoir contacting the other side of the n type gel; and an encapsulation layer covering the p type gel, the n type gel, the first reservoir, and the second reservoir, in which on the encapsulation layer, an injection unit for injecting an ion input is formed at a location corresponding to an interface contacting the p type gel and the n type gel and when reverse bias voltage is applied between the p type gel and the n type gel, the ion input injected through the injection unit is amplified and ionic current peak is generated.
    Type: Application
    Filed: May 29, 2020
    Publication date: December 3, 2020
    Inventors: Jeong-Yun SUN, Young-Chang Joo, Taek Dong Chung, Hae-Ryung LEE, Seung-Min LIM, Seok Hee HAN, Hyunjae YOO
  • Publication number: 20200383074
    Abstract: Disclosed are a method and an apparatus for transmitting and receiving a synchronization signal in a communication system. According to an exemplary embodiment of the present disclosure, a method of transmitting a first synchronization signal, performed by a base station in the communication system, may comprise generating a base sequence; generating a modified sequence by inverting polarity of the base sequence; mapping the base sequence and the modified sequence to a first frequency region having a frequency higher than a center subcarrier and a second frequency region having a frequency lower the center subcarrier, so that the base sequence and the modified sequence are symmetric centering the center subcarrier located at a center frequency of a frequency domain of the synchronization signal; and transmitting the synchronization signal comprising the base sequence and the modified sequence to a terminal. Therefore, performance of the communication system can be improved.
    Type: Application
    Filed: May 27, 2020
    Publication date: December 3, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok CHANG, Young Jo KO, Yong Sun KIM, Sang Ho LEE
  • Publication number: 20200351177
    Abstract: According to the present invention, a device for controlling an operation of at least one electric device including a user interface unit having a conversation display window in which a conversation with the at least one electric device is displayed, a conversation input window configured to receive a character for controlling the operation of the at least one electric device, an icon selection window in which an icon corresponding to the at least one electric device is displayed, and a chatting screen on which a send button for transmitting the character received by the conversation input window is arranged, and a control unit configured to collectively control the operation of the at least one electric device based on a batch control instruction received by the conversation input window.
    Type: Application
    Filed: July 22, 2020
    Publication date: November 5, 2020
    Inventors: Ji Hyun JEON, Hye Jung CHANG, Young Sun SHIN, Sun Young SEO, So Young YUN, Ji Yoon YOON, Eun Kyung HONG, A Ra CHO, Kyung Nam KIM, Jae Seok LEE, Eun Hwa JANG
  • Patent number: 10823883
    Abstract: The present invention relates to an antireflection film being capable of realizing high scratch resistance and antifouling property while simultaneously having low reflectivity and high light transmittance, and further being capable of enhancing screen sharpness of a display device.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: November 3, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jin Seok Byun, Jae Young Kim, Yeong Rae Chang
  • Publication number: 20200335232
    Abstract: A safety injection device includes a containment building, a reactor coolant system provided inside the containment building and accommodating a reactor coolant formed to carry heat energy generated according to fission of fuel, a cooling water storage section accommodating cooling water injected into the reactor coolant system, a power producing section producing power with steam discharged from the reactor coolant system in case of an accident, a steam supply pipe transmitting steam discharged from the reactor coolant system to the power producing section, a steam discharge pipe discharging steam drove the power producing section and a safety injection line supplying cooling water accommodated in the cooling water storage section to the inside of the reactor coolant system.
    Type: Application
    Filed: August 31, 2018
    Publication date: October 22, 2020
    Applicants: KOREA ATOMIC ENERGY RESEARCH INSTITUTE, KING ABDULLAH CITY FOR ATOMIC AND RENEWABLE ENERGY
    Inventors: Youngin KIM, Hyungi YOON, Seungyeob RYU, Youngmin BAE, Joohyung MOON, Hunsik HAN, Soojai SHIN, Cheongbong CHANG, Seok KIM, Junewoo KEE, Hyunjun CHO, Minkyu LEE, Bonghyun CHO
  • Patent number: 10812175
    Abstract: Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node after a predetermined period of time from a start point of the second time interval.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: October 20, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kap Seok Chang, Hyoung Jin Kwon, Sung Geun Jin, Yong Sun Kim, Seung Eun Hong, Woo Yong Lee, Hyun Kyu Chung
  • Patent number: 10802178
    Abstract: Disclosed herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin, and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein the low-refractive layer includes a first layer containing at least 70 vol % of the entire solid inorganic nanoparticles and a second layer containing at least 70 vol % of the entire hollow inorganic nanoparticles, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer or/and the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the second layer satisfies a predetermined condition.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: October 13, 2020
    Assignee: LG CHEM, LTD.
    Inventors: In Young Song, Jin Seok Byun, Boo Kyung Kim, Seok Hoon Jang, Yeong Rae Chang, Sung Joon Oh
  • Publication number: 20200319378
    Abstract: The present invention relates to an optical film for protecting a polarizer which can effectively suppress the generation of interference fringes derived from a polyester-based substrate film and exhibit a low curling property, thereby being suitably applied as a polarizer protective film or the like; a polarizing plate and an image display device comprising the same. The optical film for protecting a polarizer comprises a polyester-based substrate film having a refractive index of 1.6 to 1.7; and a hard coating layer formed on the substrate film and having a refractive index of 1.53 to 1.6 and a thickness of 13 ?m to 25 ?m, wherein the hard coating layer includes a predetermined cross-linked copolymer.
    Type: Application
    Filed: July 28, 2017
    Publication date: October 8, 2020
    Inventors: Jung Hyun SEO, Yeong Rae CHANG, Jin Seok BYUN, Jae Young KIM
  • Publication number: 20200309121
    Abstract: An electric hydraulic pump for a transmission includes: a motor including a motor cover, a motor case coupled with the motor cover, and a stator and a rotor disposed within the motor cover and the motor case; and a pump including a pump case forming a pump chamber, and a gear rotor which is disposed within the pump chamber, connected with the rotor through a motor shaft and receives rotational power of the motor. In particular, a plurality of oil circulation holes are formed in the motor cover and a connecting hole is formed in the motor cover corresponding to the pump case, and an oil flow channel is formed within the pump case for connecting the connecting hole and an oil inlet of the pump chamber.
    Type: Application
    Filed: July 17, 2019
    Publication date: October 1, 2020
    Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Sung Wook JANG, Kihyup KIM, Woo Jung KIM, June Ho LEE, Jin Seung LIM, Seungwan NOH, Youngho MOON, Taegeun KIM, Jaeyeol YUN, Jungwook LEE, Chulwan PARK, Chi Hun CHO, Gyu Chull DOH, Kyoo Ho LEE, Hyun Chul KIM, Joung Chul KIM, Hyun Duk CHANG, Jin Hee LEE, Yongho JUNG, Chang Yeon CHO, Yun Seok SUNG, Hyeonjin KIM, Joo Hang LEE
  • Publication number: 20200312878
    Abstract: In a method of manufacturing a vertical semiconductor device, an insulation layer and a sacrificial layer are alternatively and repeatedly formed on a substrate to define a structure. The structure is etched to form a hole therethrough that exposes the substrate. A first semiconductor pattern is formed in a lower portion of the hole, and a blocking pattern, a charge storage pattern, a tunnel insulation pattern and a first channel pattern are formed on a sidewall of the hole. A second channel pattern is formed on the first channel pattern and the semiconductor pattern, and a second semiconductor pattern is formed on a portion of the second channel pattern on the semiconductor pattern to define an upper channel pattern including the second channel pattern and the second semiconductor pattern. The sacrificial layers are replaced with a plurality of gates, respectively, including a conductive material.
    Type: Application
    Filed: June 16, 2020
    Publication date: October 1, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-il CHANG, Jun-Hee Lim, Yong-Seok Kim, Tae-Young Kim, Jae-Sung Sim, Su-Jin Ahn, Ji-Yeong Hwang
  • Publication number: 20200287616
    Abstract: A data transmission method of a source node in a cooperative communication system includes: performing a beamforming to a relay node; transmitting data to the relay node; performing a beamforming to a destination node; and transmitting data to the destination node.
    Type: Application
    Filed: May 22, 2020
    Publication date: September 10, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Kap-Seok CHANG, Woo-Yong LEE, Kyeongpyo KIM, Hyoung-Jin KWON, Hyun-Kyu CHUNG
  • Patent number: 10768342
    Abstract: An antireflection film including a low reflective index layer and a hard coating layer, the low reflective index layer including: a binder resin including a crosslinked polymer of a photopolymerizable compound and polysilsesquioxane having at least one reactive functional group substituted thereon; and inorganic fine particles dispersed in the binder resin, wherein a ratio of internal haze (Hi) to total haze (Ha) is 97% or less and a variation in color coordinate value (b*) before and after alkaline treatment is 0.7 or less.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: September 8, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Boo Kyung Kim, Jin Seok Byun, In Young Song, Yeong Rae Chang, Seok Hoon Jang
  • Publication number: 20200278479
    Abstract: The present invention relates to an anti-reflective film exhibiting one or more peaks (qmax) at a scattering vector of 0.0758 to 0.1256 nm?1, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 3, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jin Seok BYUN, Jeong Kyu LEE, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Publication number: 20200278478
    Abstract: The present invention relates to an anti-reflective film exhibiting one or more peaks (qmax) at a scattering vector of 0.0758 to 0.1256 nm?1, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 3, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Jin Seok BYUN, Jeong Kyu LEE, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Patent number: 10764157
    Abstract: According to the present invention, a device for controlling an operation of at least one electric device including a user interface unit having a conversation display window in which a conversation with the at least one electric device is displayed, a conversation input window configured to receive a character for controlling the operation of the at least one electric device, an icon selection window in which an icon corresponding to the at least one electric device is displayed, and a chatting screen on which a send button for transmitting the character received by the conversation input window is arranged, and a control unit configured to collectively control the operation of the at least one electric device based on a batch control instruction received by the conversation input window.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 1, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji Hyun Jeon, Hye Jung Chang, Young Sun Shin, Sun Young Seo, So Young Yun, Ji Yoon Yoon, Eun Kyung Hong, A Ra Cho, Kyung Nam Kim, Jae Seok Lee, Eun Hwa Jang
  • Patent number: 10764790
    Abstract: Provided is a communication method of a coordinator in a wireless networks system that uses a reservation-based media access control (MAC). The communication method includes receiving, from a source device, a frame that requests a reservation resource for a relay device, to enable a frame that the source device transmits to a destination device to be relayed via the relay device, and allocating the reservation resource for the relay device, in response to the request.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: September 1, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hyoung Jin Kwon, Yong Sun Kim, Kap Seok Chang, Seung Eun Hong, Sung Geun Jin, Woo Yong Lee, Hyun Kyu Chung
  • Patent number: 10754522
    Abstract: Disclosed herein is an apparatus for editing objects that applies some of object attributes of one or more objects to a target object as selected attributes. The apparatus for editing object attributes of an HMI object in a power system includes: a display unit configured to display one or more objects; an input unit configured to receive a selected object among one or more objects and receive from a user a selected attribute to be copied among object attributes of the selected object and a target object to which the selected attribute is to be applied; and a control unit configured to control the display unit so that the selected attribute is applied to the target object and the target object with the selected attribute applied thereto is displayed.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: August 25, 2020
    Assignee: LSIS CO., LTD.
    Inventors: Ae-Kyoung Bae, Yeo-Chang Yoon, Seung-Ju Lee, Seok-Chan Lee, Jang-Hyeok Yun
  • Patent number: 10747434
    Abstract: A light-emitting storage device and a light-emitting control method are provided. The device includes a storage device controller, a processor, and at least one light-emitting unit. The storage device controller is electrically connected to a host through a host controller interface for controlling the access of the light-emitting storage device. The processor is electrically connected to the storage device controller to connect to the host. The at least one light-emitting unit is electrically connected to the processor. When the host transmits a control signal to the storage device controller through the host controller interface and the control signal is judged as a signal for controlling the at least one light-emitting unit by the storage device controller, the storage device controller transmits the control signal to the processor to control a light-emitting mode of the at least one light-emitting unit.
    Type: Grant
    Filed: January 16, 2019
    Date of Patent: August 18, 2020
    Assignee: Essencore Limited
    Inventors: Ming-Chang Ou, Seok-Cheon Kwon, Chan-Ho Sohn
  • Publication number: 20200257021
    Abstract: The present invention relates to a visibility improving film for a display panel and a display device including the same. More specifically, the present invention relates to a visibility improving film for a display panel capable of exhibiting excellent physical and optical properties particularly while improving the visibility of a laser pointer, by including fine metal particles dispersed in the photocurable resin layer, and to a display device including the same.
    Type: Application
    Filed: September 28, 2018
    Publication date: August 13, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Kwangseok SEO, Han Na LEE, Yeong Rae CHANG, Jin Seok BYUN, Yun U SHIN
  • Patent number: 10725210
    Abstract: An antireflection film including a low reflective index layer and a hard coating layer, the low reflective index layer including: a binder resin including a crosslinked polymer of a photopolymerizable compound and polysilsesquioxane having at least one reactive functional group substituted thereon; and inorganic fine particles dispersed in the binder resin, wherein a ratio of internal haze (Hi) to total haze (Ha) is 97% or less and a variation in color coordinate value (b*) before and after alkaline treatment is 0.7 or less.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: July 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Boo Kyung Kim, Jin Seok Byun, In Young Song, Yeong Rae Chang, Seok Hoon Jang