Patents by Inventor Young-su Lee

Young-su Lee 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: 9537158
    Abstract: An oxidation-resistant ferritic stainless steel including a ferritic stainless steel base material, and a Cu-containing spinel-structured oxide.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: January 3, 2017
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong-Ik Kim, Byung Kyu Kim, Ju Heon Kim, Young-Su Lee, In Suk Choi, Jin-Yoo Suh, Jae-Hyeok Shim, Woo Sang Jung, Young Whan Cho
  • Publication number: 20160381395
    Abstract: A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
    Type: Application
    Filed: September 12, 2016
    Publication date: December 29, 2016
    Inventors: Hyun Mun Kim, Jong Beom Ra, Sung Deuk Kim, Young Su Lee
  • Patent number: 9456221
    Abstract: A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
    Type: Grant
    Filed: February 5, 2015
    Date of Patent: September 27, 2016
    Assignee: LG Electronics Inc.
    Inventors: Hyun Mun Kim, Jong Beom Ra, Sung Deuk Kim, Young Su Lee
  • Publication number: 20150184727
    Abstract: The present invention relates to a power transmission apparatus which includes a planetary gear set with a planetary carrier of which one side extending to form gear teeth, wherein rotating speed input from a driving power source is reduced and then input to one actuating means, rotating speed of a gear-shifting power source is input to another actuating means to achieve a plurality of gear shifts, generating power is obtained from an output shaft to store electricity to a storage battery, the stored electric energy is utilized as controlling energy for gear-shifting power so that a transmission input shaft can be easily controlled.
    Type: Application
    Filed: February 24, 2015
    Publication date: July 2, 2015
    Inventor: Young Su Lee
  • Publication number: 20150156514
    Abstract: A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
    Type: Application
    Filed: February 5, 2015
    Publication date: June 4, 2015
    Inventors: Hyun Mun Kim, Jong Beom Ra, Sung Deuk Kim, Young Su Lee
  • Publication number: 20150134715
    Abstract: A method of converting coordinates of a physical quantity from a latitude-longitude coordinates system to a rotated cubed-sphere coordinates system is disclosed. The method is performed in a hardware device including a computation part and a memory. A plurality of latitude-longitude grid areas which overlap a cubed-sphere grid area is determined. An overlapping area between the cubed-sphere grid area and the latitude-longitude grid areas is computed.
    Type: Application
    Filed: November 14, 2013
    Publication date: May 14, 2015
    Inventors: Ki-Hwan KIM, Young-Su LEE, Seol-Eun SHIN
  • Patent number: 9020404
    Abstract: A developing unit includes a toner storage portion for containing toner and a development portion for containing the toner supplied from the toner storage portion. The development portion includes a developing roller for supplying the toner to a photosensitive body, a supply roller and an auxiliary supply roller. The supply roller and the auxiliary supply roller rotate while facing each other to supply the toner to the developing roller. In the developing unit, an inequality that |D?(R1+R2)|?1.0 mm is satisfied, where a distance between the centers of the auxiliary supply roller and the supply roller in a region where the auxiliary supply roller and the supply roller face each other is D, a radius of the supply roller is R1, and a radius of the auxiliary supply roller is R2.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-hong Kim, Joo-hwan Noh, Young-su Lee, Yun-kyu Sim
  • Patent number: 8983225
    Abstract: A method of coding a moving picture is provided that reduces blocking artifacts. The method can include defining a plurality of defining pixels S0, S1, and S2, which are centered around a block boundary. If a default mode is selected then frequency information of the surroundings of the block boundary is obtained. A magnitude of a discontinuous component in a frequency domain belonging to the block boundary is adjusted based on a magnitude of a corresponding discontinuous component selected from a pixel contained entirely within a block adjacent the block boundary. The frequency domain adjustment is then applied to a spatial domain. Or, a DC offset mode can be selected to reduce blocking artifacts in smooth regions where there is little motion.
    Type: Grant
    Filed: October 5, 2009
    Date of Patent: March 17, 2015
    Assignee: LG Electronics Inc.
    Inventors: Hyun Mun Kim, Jong Beom Ra, Sung Deuk Kim, Young Su Lee
  • Patent number: 8983340
    Abstract: An image forming apparatus includes a main body; at least one developer including an image carrier unit having an image carrier and a charged body charging the image carrier, a developing unit installed to swing at a predetermined angle with respect to the image carrier unit and having a developing roller, and a pressing member pressing the developing unit so that the developing roller comes in contact with the image carrier, and separably installed in the main body; a nip separation unit installed in the main body on one side of the developer to swing the developing unit so that the developing unit is in a position that is separated from the image carrier; and a control unit controlling the developer and the nip separation unit according to a print command.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: March 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-hyun Shin, Young-su Lee, Joon-hee Kim
  • Patent number: 8923736
    Abstract: A developing unit includes a toner storage portion containing toner and including a toner supply member, a development portion disposed above the toner storage portion and containing the toner supplied from the toner storage portion by the toner supply member, and including a developing roller and a supply roller to supply the toner to the developing roller, and a partition wall to divide the toner storage portion and the development portion, and including an opening portion disposed under the lowest portion of the supply roller and forming a path of the toner supplied from the toner storage portion to the development portion.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-hong Kim, Joo-hwan Noh, Young-su Lee, Yun-kyu Sim
  • Patent number: 8752932
    Abstract: An inkjet image forming apparatus includes a main body frame, a medium supplying unit which is coupled to the main body frame and supplying a print medium, an image forming cartridge which is coupled to the main body frame, forms an image on the supplied print medium, and including a nozzle to eject ink, and a wiping assembly which wipes the nozzle. The wiping assembly includes a wiping sheet storage unit in which the wiping sheet is stored as being wound, a transfer shuttle which moves along arrangement of the nozzle by a driving force of a driving source, a pressing member which is provided in the transfer shuttle and presses a region of the wiping sheet against the nozzle to perform wiping using the wiping sheet, and a wiping sheet support unit which is provided in the transfer shuttle and restricts move of the wiping sheet while the nozzle is wiped.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: June 17, 2014
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Youn-gun Jung, Karp-sik Youn, Young-su Lee, Gun Heo
  • Publication number: 20140140920
    Abstract: A vanadium-based hydrogen permeation alloy for a membrane, a method of manufacturing the same, and a method of using a membrane including the same are provided. The vanadium-based hydrogen permeation alloy for a membrane includes nickel (Ni) at more than 0 atm % and 5 atm % or less, iron (Fe) at 5 atm % to 15 atm %, yttrium (Y) at more than 0 atm % and 1 atm % or less, and a remainder of vanadium and impurities.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 22, 2014
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jin-Yoo SUH, Ja-ryeong KIM, Eric FLEURY, Young-Su LEE, In-Suk CHOI, Young-Whan CHO, Dong-Ik KIM, Jae-Hyeok SHIM
  • Patent number: 8577121
    Abstract: Disclosed herein is a forged seal imprint checking method which includes a step ST-101 of generating a reference seal imprint from a genuine seal (ST-110) and a step ST-121 of comparing a compared seal imprints with the reference seal imprint to calculate characteristic values of the compared seal imprint with respect to the reference seal imprint (ST-140). According to experimental results, forged seal imprints obtained by seals forged by etching a zinc plate or a resin plate can be recognized and forged seal imprints generated by seals forged through computer copy can be also recognized. Accordingly, an objective basis on which it can be determined whether seal imprints on documents are forged in civil and criminal cases can be provided to prevent errors which may be generated when seal imprints are inspected with the naked eyes or microscopes.
    Type: Grant
    Filed: November 30, 2010
    Date of Patent: November 5, 2013
    Assignee: Republic of Korea (National Forensic Service Director Ministry of Public Administration and Security)
    Inventors: Joong Lee, Young Su Lee, Jun Suk Kim, Ki Woong Moon, Byung Wook Park
  • Patent number: 8444251
    Abstract: A scrapping unit and an image forming apparatus having the same, and cleaning methods thereof to improve a maintenance performance. The scrapping unit cleans a polluted member disposed in an image forming apparatus and stained by a polluting material. The scrapping unit may include an endless belt to circulate between an exposed position where a surface of the endless belt is exposed toward the polluted member, and a non-exposed position where the surface of the endless belt is not exposed with respect to the polluted member, and a belt support frame which includes a belt support surface to support the endless belt so that the endless belt can be unfolded in the exposed position, and a storing space to store the endless belt so that the endless belt can be folded in the non-exposed position.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: May 21, 2013
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Gun Heo, Karp-sik Youn, Young-su Lee, Youn-gun Jung
  • Publication number: 20130040220
    Abstract: An oxidation-resistant ferritic stainless steel comprising: a ferritic stainless steel comprising Cr, wherein a {110} grain orientation fraction of a surface of the ferritic stainless steel as measured using electron back scattered diffraction pattern (EBSD) is about 5% or more; and a chromium oxide layer formed on the surface of the ferritic stainless steel is provided.
    Type: Application
    Filed: September 8, 2011
    Publication date: February 14, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Dong-Ik KIM, Young Whan CHO, Jae Pyoung AHN, Woo Sang JUNG, Jae-Hyeok SHIM, Jin-Yoo SUH, In Suk CHOI, Young-Su LEE, Ju heon KIM
  • Patent number: 8342666
    Abstract: An ink-jet image forming apparatus. The ink-jet image forming apparatus includes a print head having a plurality of nozzles to eject ink, an ink tank to store the ink, an ink supply passage to supply the ink in the ink tank to the print head, an ink return passage to return the ink in the print head to the ink tank, a regulator mounted in the ink supply passage to regulate ink flow supplied to the print head, a shut-off valve mounted in the ink supply passage, between the ink tank and the regulator, to intercept ink flow supplied to the regulator, and an ink pump mounted in the ink return passage to forcedly flow the ink in the ink return passage. The ink pump is configured to be driven in forward and reverse directions so as to change an ink flow direction. Since the shut-off valve intercepts forcedly the ink flow in the ink supply passage, the ink in the ink tank is prevented from flowing abnormally to the print head and leaking from the print head.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: January 1, 2013
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Jae Yun Lee, Jin Ho Park, Sung Wook Kang, Young Su Lee, In Su Lee, Il Ju Mun
  • Patent number: 8297745
    Abstract: An image forming apparatus including a body, a print head including a nozzle part having a length corresponding to a width of a printing medium, and a regulator provided separately from the print head and mounted to the body, the regulator serves to adjust a negative pressure of ink which is to be supplied into the print head.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: October 30, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Su Lee, Jin Ho Park, Myung Song Jung
  • Publication number: 20120254979
    Abstract: Hardware internet packet processing device for network security constructed in such a manner that packet data is packet processed by hardware without a receiving memory or MCU and interruption of internet packets for network security is implemented by hardware construction.
    Type: Application
    Filed: September 25, 2011
    Publication date: October 4, 2012
    Applicant: WIZNET CO., LTD.
    Inventors: Jung tae LEE, Bong Jun HUR, June woo RYU, Jae ho LEE, Soo hwan KIM, Young su LEE
  • Publication number: 20120183332
    Abstract: An image forming apparatus includes a main body; at least one developer including an image carrier unit having an image carrier and a charged body charging the image carrier, a developing unit installed to swing at a predetermined angle with respect to the image carrier unit and having a developing roller, and a pressing member pressing the developing unit so that the developing roller comes in contact with the image carrier, and separably installed in the main body; a nip separation unit installed in the main body on one side of the developer to swing the developing unit so that the developing unit is in a position that is separated from the image carrier; and a control unit controlling the developer and the nip separation unit according to a print command.
    Type: Application
    Filed: August 4, 2011
    Publication date: July 19, 2012
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Jae-hyun Shin, Young-su Lee, Joon-hee Kim
  • Patent number: RE45135
    Abstract: A method of coding a moving picture reduces blocking artifacts. The method includes defining pixel sets S0, S1, S2 around a block boundary, selectively determining a deblocking mode as a default mode or a DC offset mode depending on the degree of blocking artifacts. If the default mode is selected, frequency information is obtained around the block boundary per pixel using a 4-point DCT kernel, for example, a magnitude of a discontinuous component belonging to the block boundary is replaced with a minimum magnitude of discontinuous components belonging to the surroundings of the block boundary in the frequency domain and the replacing step is applied to the spatial domain. If the DC offset mode is selected and a determination is made to perform DC offset mode, the blocking artifacts in a smooth region are removed in the DC offset mode.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: September 16, 2014
    Assignee: LG Electronics Inc.
    Inventors: Hyun Mun Kim, Jong Beom Ra, Sung Deuk Kim, Young Su Lee