Patents by Inventor Young Geun Choi

Young Geun 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).

  • Publication number: 20180085624
    Abstract: Disclosed is a rehabilitation training apparatus that is used when a stroke patient or the like performs rehabilitation training. A rehabilitation training system includes a main device in which a plurality of unit modules are disposed on a plane at a specific interval; a board plate inserted into or coupled to the main device and including a plurality of holes; and a plurality of pegs that are inserted into the holes of the board plate, wherein each of the unit modules includes a sensor module configured to detect insertion of a peg into the hole, and a light source module configured to output light of a specific color, and if the board plate is inserted into the main device, the light source module provides output light to the outside through the hole of the board plate.
    Type: Application
    Filed: December 4, 2017
    Publication date: March 29, 2018
    Applicant: NEOFECT CO., LTD.
    Inventors: Young Geun CHOI, Dong Seok Yang, Sung Jun Roh, Dae Hoon Jang, Dae Kwan Park, Kyung Hwan Yoo, Su Hyun Bae, Seo Jeong Han
  • Patent number: 9925109
    Abstract: Disclosed is a rehabilitation training apparatus including a pair of first tracks that are arranged in parallel at an interval, a second track that is perpendicular to the pair of first tracks and is movably connected to the pair of first tracks, a hand holder that is movably provided in the second track and on which a hand of the user is held, a holder driving unit that reciprocally moves the hand holder along the second track, and a track driving unit that reciprocally moves the second track along the pair of first tracks.
    Type: Grant
    Filed: October 12, 2016
    Date of Patent: March 27, 2018
    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
  • Publication number: 20180078814
    Abstract: Disclosed is a rehabilitation training apparatus. The rehabilitation training apparatus includes a pair of first tracks that are arranged in parallel at an interval, a second track movably connected to the pair of first tracks, a hand holder that is movably provided in the second track and on which a hand and an arm of a user is held, and a stopper for a track provided in at least one of the first tracks and the second track to limit movements of the second track and the hand holder.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 22, 2018
    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
  • Patent number: 9922726
    Abstract: A semiconductor memory device may include: a memory cell array coupled between a plurality of word lines and a plurality of bit lines; a first source voltage supply unit suitable for providing a boosted voltage to a source voltage terminal when a cell mat signal is activated; a second source voltage supply unit suitable for providing a dropped voltage that is lower than the boosted voltage to the source voltage terminal; a word line driving circuit suitable for selecting one of the plurality of word lines in response to an address combination signal and driving the selected word line and unselected word lines, when the cell mat signal is activated; and a weak cell detection circuit suitable for detecting a weak cell by checking data values of memory cells coupled to a word line which is driven by the word line driving circuit during the test mode.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: March 20, 2018
    Assignee: SK Hynix Inc.
    Inventor: Young-Geun Choi
  • Patent number: 9853288
    Abstract: Disclosed is a lithium secondary battery including (i) a cathode active material including a lithium metal phosphate according to Formula 1 below; and (ii) an anode active material including amorphous carbon, Li1+aM(PO4?b)Xb??(1) wherein M is at least one selected from metals of Groups II to XII, X is at least one selected from F, S and N, ?0.5?a?+0.5, and 0?b?0.1.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: December 26, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Young Geun Choi, Geun Chang Chung, Yourim Yoon, Seung Jae Yoon, Jong Mo Jung, Jonghyun Chae
  • Patent number: 9853328
    Abstract: Disclosed are an electrolyte for lithium secondary batteries including 10 wt % to 90 wt % of an ester based solvent and 10 wt % to 90 wt % of a carbonate based solvent with respect to the total weight of a non-aqueous solvent, and a lithium secondary battery including the same.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: December 26, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Young Geun Choi, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Yourim Yoon, Young Cheol Choi, Seung Jae Yoon
  • Publication number: 20170340502
    Abstract: Disclosed is a rehabilitation training apparatus including a pair of first tracks that are arranged in parallel at an interval, a second track that is perpendicular to the pair of first tracks and is movably connected to the pair of first tracks, a hand holder that is movably provided in the second track and on which a hand of the user is held, a holder driving unit that reciprocally moves the hand holder along the second track, and a track driving unit that reciprocally moves the second track along the pair of first tracks.
    Type: Application
    Filed: October 12, 2016
    Publication date: November 30, 2017
    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
  • Publication number: 20170237123
    Abstract: Disclosed is a lithium secondary battery including: (i) a cathode active material including a lithium metal phosphate according to Formula 1 below; (ii) an anode active material including amorphous carbon; and (iii) an electrolyte for lithium secondary batteries including a lithium salt and an ether based solvent, wherein propylene carbonate (PC) is included in an amount of 1 wt % to 60 wt % in the electrolyte for lithium secondary batteries, based on the total weight of the electrolyte, Li1+aM(PO4?b)Xb??(1) wherein M is at least one selected from metals of Groups II to XII; X is at least one selected from F, S and N, ?0.5?a?+0.5, and 0?b?0.1.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 17, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Yourim Yoon, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Young Cheol Choi, Young Geun Choi, Seung Jae Yoon
  • Publication number: 20170222216
    Abstract: Provided is an electrode, comprising: an electrode current collector, a metal nanowire formed on a surface of the electrode current collector, and a conductive layer surrounding the outside of the metal nanowire, wherein a gap is formed between the metal nanowire and the conductive layer, so that the metal nanowire and the conductive layer are spaced apart from each other without direct contact between them.
    Type: Application
    Filed: January 11, 2016
    Publication date: August 3, 2017
    Applicant: LG CHEM, LTD.
    Inventors: Sun-Hwak WOO, Young-Geun CHOI, Hye-Bin KIM, Ji-Hye YANG
  • Publication number: 20170178751
    Abstract: A semiconductor memory device may include: a memory cell array coupled between a plurality of word lines and a plurality of bit lines; a first source voltage supply unit suitable for providing a boosted voltage to a source voltage terminal when a cell mat signal is activated; a second source voltage supply unit suitable for providing a dropped voltage that is lower than the boosted voltage to the source voltage terminal; a word line driving circuit suitable for selecting one of the plurality of word lines in response to an address combination signal and driving the selected word line and unselected word lines, when the cell mat signal is activated; and a weak cell detection circuit suitable for detecting a weak cell by checking data values of memory cells coupled to a word line which is driven by the word line driving circuit during the test mode.
    Type: Application
    Filed: May 5, 2016
    Publication date: June 22, 2017
    Inventor: Young-Geun CHOI
  • Patent number: 9672157
    Abstract: A semiconductor device may include an active controller configured to count pulses of an active signal, and activate an active masking signal for masking an active operation when the counted number of the active signal is greater than predetermined activation times of the active signal during a predetermined bank active section.
    Type: Grant
    Filed: April 28, 2015
    Date of Patent: June 6, 2017
    Assignee: SK hynix Inc.
    Inventor: Young Geun Choi
  • Patent number: 9668219
    Abstract: A power reduction method for a multi-path receiver including multi-receivers, includes detecting a state of the multi-receivers, and controlling clock gating or power gating of the multi-receivers based on the state.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: May 30, 2017
    Assignees: Samsung Electronics Co., Ltd., Postech Academy—Industry Foundation
    Inventors: Jong Han Kim, Young Geun Choi, Sung Joo Yoo, Joon Seong Kang, Young Jun Hong
  • Patent number: 9666897
    Abstract: Disclosed are an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which the non-aqueous solvent includes an ether based solvent and a glyme based solvent and a ratio of the ether based solvent to the glyme based solvent is 20:80 to 60:40 based on the total volume of the non-aqueous solvent, and a secondary battery including the same.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: May 30, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Young Geun Choi, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Yourim Yoon, Young Cheol Choi, Seung Jae Yoon
  • Patent number: 9660266
    Abstract: Disclosed is a lithium secondary battery including (i) a cathode active material including a lithium metal phosphate according to Formula 1 below, (ii) an anode active material including amorphous carbon, and (iii) an electrolyte for lithium secondary batteries including a lithium salt and an ether-based solvent, Li1+aM(PO4-b)Xb??(1) wherein M is at least one selected from the group consisting of Group II to XII metals, X is at least one selected from F, S, and N, ?0.5?a?+0.5, and 0?b?0.1.
    Type: Grant
    Filed: November 21, 2013
    Date of Patent: May 23, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Young Geun Choi, Geun Chang Chung, Yourim Yoon, Seung Jae Yoon, Jong Mo Jung, Jonghyun Chae
  • Patent number: 9595738
    Abstract: Disclosed is an electrolyte for lithium secondary batteries including a lithium salt and a non-aqueous solvent, in which a silane based material is included in an amount of 0.1 to 20 wt % based on the total weight of the electrolyte, and a lithium secondary battery including the same.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: March 14, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Yourim Yoon, Jong Mo Jung, Jonghyun Chae, Chul Haeng Lee, Geun Chang Chung, Young Cheol Choi, Young Geun Choi, Seung Jae Yoon
  • Patent number: 9552850
    Abstract: An embodiment relates to a sense amplifier driving device for stabilizing bit line precharge power when a post-overdriving operation is performed. The sense amplifier driving device includes a power driving unit configured to supply a first pull-up voltage and a pull-down voltage to a pull-up power line and a pull-down power line during a post-overdriving period and a driving signal generation unit configured to generate a pull-up driving signal and a pull-down driving signal activated during the post-overdriving period in order to control the driving of the power driving unit. The driving signal generation unit controls a point of time at which the pull-down driving signal shifts in response to a post-overdriving enable signal.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: January 24, 2017
    Assignee: SK HYNIX INC.
    Inventor: Young Geun Choi
  • Publication number: 20160372162
    Abstract: An embodiment relates to a sense amplifier driving device for stabilizing bit line precharge power when a post-overdriving operation is performed. The sense amplifier driving device includes a power driving unit configured to supply a first pull-up voltage and a pull-down voltage to a pull-up power line and a pull-down power line during a post-overdriving period and a driving signal generation unit configured to generate a pull-up driving signal and a pull-down driving signal activated during the post-overdriving period in order to control the driving of the power driving unit. The driving signal generation unit controls a point of time at which the pull-down driving signal shifts in response to a post-overdriving enable signal.
    Type: Application
    Filed: October 19, 2015
    Publication date: December 22, 2016
    Inventor: Young Geun CHOI
  • Patent number: 9515654
    Abstract: A semiconductor apparatus include a signal level switching decision unit and a transmitter unit. The signal level switching decision unit generates a switching control signal according to off-current of transistors included therein. The transmitter unit outputs a transmitter input signal as a transmitter output signal in response to a switching control signal.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: December 6, 2016
    Assignee: Sk hynix Inc.
    Inventor: Young Geun Choi
  • Patent number: 9443609
    Abstract: A voltage monitoring test circuit includes a switching control signal generation unit configured to receive first and second switching signals, control the first and second switching signals such that an enable period of the first switching signal and an enable period of the second switching signal do not overlap with each other, and generate first and second switching control signals where a first voltage is transmitted in response to the first switching control signal and a second voltage is transmitted in response to the second switching control signal.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: September 13, 2016
    Assignee: SK HYNIX INC.
    Inventor: Young Geun Choi
  • Publication number: 20160217838
    Abstract: A semiconductor device may include an active controller configured to count pulses of an active signal, and activate an active masking signal for masking an active operation when the counted number of the active signal is greater than predetermined activation times of the active signal during a predetermined bank active section.
    Type: Application
    Filed: April 28, 2015
    Publication date: July 28, 2016
    Inventor: Young Geun CHOI