Patents Assigned to Industry-Academia Cooperation Group of Sejong University
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Patent number: 11155699Abstract: Provided are nanocellulose composite and preparation method thereof. The method comprises preparing cellulose nanofiber, mixing the cellulose nanofiber with a silica precursor in a solvent to attach silica particles to the surface of the cellulose nanofiber, or to form a silica coating layer on the surface of the cellulose nanofiber, and mixing the cellulose nanofiber with the silica particles or the silica coating layer with a polymer. According to the present invention, by using surface vitrification-treated nano cellulose, nanocellulose polymer composites that exhibits high mechanical properties such as impact resistance as well as excellent heat resistance can be prepared.Type: GrantFiled: April 12, 2018Date of Patent: October 26, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Young Soo Seo, Sang Yul Park, Hyo Sun Kim, Song Hee Lee
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Patent number: 11115085Abstract: A MIMO-OFDM system for increasing reliability includes a transmission terminal that includes Nt transmission antennas and transmits a MIMO signal through relay terminals, and a reception terminal that receives the MIMO signal from the relay terminal through Nr reception antennas, and the transmission terminal extracts a composite channel coefficient from a composite channel generated by matching a channel between the transmission terminal and the reception terminal with a channel between each of a plurality of the relay terminals and the reception terminal, selects the relay terminal corresponding to the composite channel coefficient having a maximized channel capacity from among the plurality of relay terminals by using the extracted composite channel coefficient, and transmits a MIMO signal to the reception terminal through the selected relay terminal.Type: GrantFiled: October 29, 2020Date of Patent: September 7, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Hyoung-Kyu Song, Yu-Jin Na, Min-Jae Paek
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Patent number: 11101459Abstract: Disclosed is a zinc ion secondary battery. More particularly, the zinc ion secondary battery includes a first electrode; a second electrode; and an electrolyte disposed between the first electrode and the second electrode, wherein an active material included in the first electrode is an alkali metal-vanadium oxide/graphene oxide composite, wherein the alkali metal-vanadium oxide has a layered structure in which alkali metal layers and vanadium oxide layers are alternately stacked. Accordingly, a zinc ion battery system including the K2V3O8/a graphene oxide composite as an electrode active material can exhibit excellent rechargeability and have a high discharge capacity and an excellent capacity retention rate.Type: GrantFiled: December 17, 2018Date of Patent: August 24, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek Myung, Jae Hyeon Jo, Hee Jae Kim
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Patent number: 11075402Abstract: The present invention relates to a positive electrode active material for a potassium secondary battery, the positive electrode active material according to the present invention is a crystalline material comprising: K; a transition metal; P; and O, and comprises, as a main image, an image indicating a diffraction peak having a relative intensity of 5% or more in a range of Bragg angles (2?) of a X-ray diffraction pattern of 14.7° to 15.7°, 22.1° to 23.1°, 25.5° to 26.5°, and 29.7° to 30.8°, when the relative intensity of the diffraction peak having the highest intensity is taken as 100% in the powder X-ray diffraction pattern of the material.Type: GrantFiled: March 7, 2018Date of Patent: July 27, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Kee-sun Sohn, Un-bea Park
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Publication number: 20210218972Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.Type: ApplicationFiled: April 1, 2021Publication date: July 15, 2021Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong UniversityInventors: Se-Yoon JEONG, Hae-Chul CHOI, Jeong-Il SEO, Seung-Kwon BEACK, In-Seon JANG, Jae-Gon KIM, Kyung-Ae MOON, Dae-Young JANG, Jin-Woo HONG, Jin-Woong KIM, Yung-Lyul LEE, Dong-Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Dae-Yeon KIM, Dong-Kyun KIM
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Publication number: 20210218973Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.Type: ApplicationFiled: April 1, 2021Publication date: July 15, 2021Applicants: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong UniversityInventors: Se-Yoon JEONG, Hae-Chul CHOI, Jeong-Il SEO, Seung-Kwon BEACK, In-Seon JANG, Jae-Gon KIM, Kyung-Ae MOON, Dae-Young JANG, Jin-Woo HONG, Jin-Woong KIM, Yung-Lyul LEE, Dong-Gyu SIM, Seoung-Jun OH, Chang-Beom AHN, Dae-Yeon KIM, Dong-Kyun KIM
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Patent number: 11053438Abstract: The invention relates to a red phosphor with a narrow full width at half maximum, having improved decay time and resolving afterglow phenomenon. The fluoride-based phosphor according to the invention is characterized in including a host having a composition of the following [Formula 1] including rubidium (Rb), cesium (Cs), silicon (Si) and fluorine (F) as constituent elements, and manganese (Mn) which is solid solution treated in the host as an activator: Rb3-xCsxSiF7??[Formula 1] (where, 0<x<3).Type: GrantFiled: September 16, 2019Date of Patent: July 6, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Kee-sun Sohn, Min-seuk Kim
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Patent number: 11043702Abstract: Disclosed is a zinc ion secondary battery including an aqueous electrolyte. More particularly, the zinc ion secondary battery includes a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; and an aqueous electrolyte disposed between the positive electrode and the negative electrode and containing an aqueous solvent and a metal salt, wherein the metal salt has a composition represented by Formula 1 below: A-xZn.yM??[Formula 1] wherein A is an aminopolycarboxylate, x is 1 to 2, y is 0 to 3, and M is an alkali metal.Type: GrantFiled: December 17, 2018Date of Patent: June 22, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek Myung, Jae Hyeon Jo
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Patent number: 10938029Abstract: A sodium-based electrode active material and a secondary battery comprising the same are provided. The electrode active material is represented by the following Chemical Formula 1, and has an orthorhombic crystal system and a space group of Cmcm. [Chemical Formula 1] Nax[Mn1-y-zM1yM2z]O2-?A?. In Chemical Formula 1, x may be 0.5 to 0.8. M1 and M2 may be, regardless of each other, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nd, Mo, Tc, Ru, Rh, Pd, Pb, Ag, Cd, Al, Ga, In, Sn, or Bi. y may be from 0 to 0.25. z may be from 0 to 0.25. A may be N, O, F, or S, and ? may be 0 to 0.1.Type: GrantFiled: April 12, 2017Date of Patent: March 2, 2021Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seungtaek Myung, Jiung Choi, Changheum Jo
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Publication number: 20210037245Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus that perform inter-prediction using a motion vector predictor. For a candidate block in a col picture, a scaled motion vector is generated based on a motion vector of the candidate block. When the scaled motion vector indicates a target block, a motion vector predictor of the target block is generated based on the motion vector of the candidate block. The motion vector predictor is used to derive the motion vector of the target block in a specific inter-prediction mode such as a merge mode and an AMVP mode.Type: ApplicationFiled: January 25, 2019Publication date: February 4, 2021Applicants: Electronics and Telecommunications Research Institute, INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITY, INDUSTRY-UNIVERSITY COOPERATION FOUNDATION KOREA AEROSPACE UNIVERSITYInventors: Sung-Chang LIM, Jung-Won KANG, Hyunsuk KO, Jin-Ho LEE, Ha-Hyun LEE, Dong-San JUN, Hui-Yong KIM, Yung-Lyul LEE, Nam-Uk KIM, Jae-Gon KIM
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Publication number: 20210021816Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus for deriving an intra-prediction mode. An intra-prediction mode may be derived using a method for deriving an intra-prediction mode based on a neighbor block of the target block, a method for deriving an intra-prediction mode using signaling of the intra-prediction mode of the target block, or a method for deriving an adaptive intra-prediction mode based on the type of a target slice. An MPM list may be used to derive the intra-prediction mode, and a temporal neighbor block or the like may be used to configure the MPM list.Type: ApplicationFiled: August 3, 2020Publication date: January 21, 2021Applicants: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Industry-Academia Cooperation Group of Sejong UniversityInventors: Jin-Ho LEE, Jae-Gon KIM, Jung-Won KANG, Do-Hyeon PARK, Yung-Lyul LEE, Ha-Hyun LEE, Sung-Chang LIM, Hui-Yong KIM, Ji-Hoon DO, Yong-Uk YOON
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Patent number: 10862547Abstract: Disclosed is a MIMO-OFDM-based intercellular cooperative communication system and a cooperative communication method using the system, the system and method using the system mitigate influence of an intercellular interference and to increase reliability of the mobile terminal located at an edge of a cell, using a CoMP scheme by which base stations cooperate in a HetNet system, a pre-coding scheme by which a channel coefficient of a desired signal increases and a channel coefficient of an interference signal is reduced, and a MIMO detection scheme with an excellent signal detection performance.Type: GrantFiled: February 21, 2019Date of Patent: December 8, 2020Assignee: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Hyoung-Kyu Song, Min-Jae Paek, Won-Chang Kim
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Patent number: 10771781Abstract: Disclosed herein are a decoding method and apparatus and an encoding method and apparatus for deriving an intra prediction mode. An intra prediction mode may be derived using a method for deriving an intra prediction mode based on a neighbor block of the target block, a method for deriving an intra prediction mode using signaling of the intra prediction mode of the target block, or a method for deriving an adaptive intra prediction mode based on the type of a target slice. An MPM list may be used to derive the intra prediction mode, and a temporal neighbor block or the like may be used to configure the MPM list.Type: GrantFiled: March 12, 2019Date of Patent: September 8, 2020Assignees: Electronics and Telecommunications Research Institute, Industry-University Cooperation Foundation Korea Aerospace University, Industry-Academia Cooperation Group of Sejong UniversityInventors: Jin-Ho Lee, Jae-Gon Kim, Jung-Won Kang, Do-Hyeon Park, Yung-Lyul Lee, Ha-Hyun Lee, Sung-Chang Lim, Hui-Yong Kim, Ji-Hoon Do, Yong-Uk Yoon
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Patent number: 10700060Abstract: An e-fuse for a semiconductor device includes first and second electrodes; a gate metal electrically coupling the first and second electrodes with each other; a semiconductor layer formed under the gate metal, and forming a capacitor together with the gate metal; and a first oxide layer formed under the gate metal and on both sides of the semiconductor layer.Type: GrantFiled: November 1, 2019Date of Patent: June 30, 2020Assignees: SK hynix Inc., INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Deok-kee Kim, Honggyun Kim, Jae Hong Kim, Seo Woo Nam
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Publication number: 20200190629Abstract: A vehicle interior material made of a rose-gold-colored copper alloy may include 0.07 to 0.21 wt % of aluminum (Al), 0.06 to 0.19 wt % of magnesium (Mg), 0.17 to 0.52 wt % of zinc (Zn), and a balance of copper (Cu) and unavoidable impurities, wherein the sum of the aluminum (Al), the magnesium (Mg), and the zinc (Zn) is 0.5 to 1.5 at %.Type: ApplicationFiled: November 12, 2019Publication date: June 18, 2020Applicants: HYUNDAI MOTOR COMPANY, Kia Motors Corporation, Industry-Academia Cooperation Group Of Sejong UniversityInventors: Hoo-Dam LEE, Chang-Yeol YOO, Jong-Kook LEE, Sung-Ho YOON, Ye-Lim KIM, Yeon-Beom JEONG, Ki-Buem KIM
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Patent number: 10685913Abstract: An e-fuse for use in a semiconductor device includes first and second electrodes; a gate metal coupling the first and second electrodes with each other; a first oxide layer formed under the gate metal; and a gate oxide layer formed between a bottom end of the gate metal and a top end of the first oxide layer.Type: GrantFiled: February 14, 2018Date of Patent: June 16, 2020Assignees: SK hynix Inc., INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Deok-kee Kim, Jae Hong Kim, Seo Woo Nam
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Publication number: 20200177241Abstract: Disclosed is a MIMO-OFDM-based intercellular cooperative communication system and a cooperative communication method using the system, the system and method using the system mitigate influence of an intercellular interference and to increase reliability of the mobile terminal located at an edge of a cell, using a CoMP scheme by which base stations cooperate in a HetNet system, a pre-coding scheme by which a channel coefficient of a desired signal increases and a channel coefficient of an interference signal is reduced, and a MIMO detection scheme with an excellent signal detection performance.Type: ApplicationFiled: February 21, 2019Publication date: June 4, 2020Applicant: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Hyoung-Kyu SONG, Min-Jae PAEK, Won-Chang KIM
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Publication number: 20200157318Abstract: Provided are nanocellulose composite and preparation method thereof. The method comprises preparing cellulose nanofiber, mixing the cellulose nanofiber with a silica precursor in a solvent to attach silica particles to the surface of the cellulose nanofiber, or to form a silica coating layer on the surface of the cellulose nanofiber, and mixing the cellulose nanofiber with the silica particles or the silica coating layer with a polymer. According to the present invention, by using surface vitrification-treated nano cellulose, nanocellulose polymer composites that exhibits high mechanical properties such as impact resistance as well as excellent heat resistance can be prepared.Type: ApplicationFiled: April 12, 2018Publication date: May 21, 2020Applicant: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Young Soo SEO, Sang Yul PARK, Hyo Sun KIM, Song Hee LEE
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Patent number: 10651463Abstract: A negative electrode active material includes a silicon-based alloy represented by Si-M1-M2-C—B, wherein M1 and M2 are different from each other and are each independently selected from magnesium, aluminum, titanium, vanadium, chromium, iron, cobalt, nickel, copper, zinc, gallium, germanium, manganese, yttrium, zirconium, niobium, molybdenum, silver, tin, tantalum, and tungsten. In the silicon-based alloy, Si is in a range of about 50 at % to about 90 at %, M1 is in a range of about 10 at % to about 50 atom %, and M2 is in a range of 0 at % to about 10 at %, based on a total number of Si, M1, and M2 atoms. C is in a range of about 0.01 to about 30 parts by weight, and B is in a range of 0 to about 5 parts by weight, based on a total of 100 parts by weight of Si, M1, and M2.Type: GrantFiled: May 23, 2017Date of Patent: May 12, 2020Assignees: SAMSUNG SDI CO., LTD., MK ELECTRON CO., LTD., Industry-Academia Cooperation Group of Sejong UniversityInventors: Soonsung Suh, Jaehyuk Kim, Jaemyung Kim, Kibuem Kim, Jeongtae Kim, Seungwhan Lee, Yulsang Lee, Jongsoo Cho, Sunghwan Hong
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Publication number: 20200099105Abstract: Disclosed is a zinc ion secondary battery including an aqueous electrolyte. More particularly, the zinc ion secondary battery includes a positive electrode comprising a positive electrode active material; a negative electrode comprising a negative electrode active material; and an aqueous electrolyte disposed between the positive electrode and the negative electrode and containing an aqueous solvent and a metal salt, wherein the metal salt has a composition represented by Formula 1 below: A-xZn.yM??[Formula 1] wherein A is an aminopolycarboxylate, x is 1 to 2, y is 0 to 3, and M is an alkali metal.Type: ApplicationFiled: December 17, 2018Publication date: March 26, 2020Applicant: INDUSTRY-ACADEMIA COOPERATION GROUP OF SEJONG UNIVERSITYInventors: Seung Taek MYUNG, Jae Hyeon JO