Patents by Inventor Kangwook JO

Kangwook JO 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: 10650874
    Abstract: A magnetic memory device includes a magnetic element and a write circuit electrically connected to two nodes of the magnetic element and configured to provide a write current to the magnetic element, wherein the write current includes a first current having a first peak applied for a first time period and a second current having a second peak applied for a second time period, where the second peak is smaller than the first peak and the second period is longer than the first time period.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: May 12, 2020
    Assignees: SK hynix Inc., Industry-Academic Cooperation Foundation, Yonsei University
    Inventors: Sachin Pathak, Kangwook Jo, Jongil Hong, Hongil Yoon
  • Patent number: 10615801
    Abstract: A technology mapping method for a FPGA includes converting a gate level netlist into an AND-Inverter Graph (AIG) netlist, selecting a node among nodes included in the AIG netlist, generating a cut set including one or more cuts corresponding to the selected node, selecting a best cut by sorting the cuts included in the cut set according to predetermined criteria and outputting a LUT netlist including the best cut, wherein the predetermined criteria include a maximum difference of levels of sub-cuts connected in each cut as a first criterion.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: April 7, 2020
    Assignees: SK hynix Inc., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kangwook Jo, Jeongbin Kim, Minyoung Im, Taehee You, Eui-Young Chung, Hongil Yoon
  • Publication number: 20190356316
    Abstract: A technology mapping method for a FPGA includes converting a gate level netlist into an AND-Inverter Graph (AIG) netlist, selecting a node among nodes included in the AIG netlist, generating a cut set including one or more cuts corresponding to the selected node, selecting a best cut by sorting the cuts included in the cut set according to predetermined criteria and outputting a LUT netlist including the best cut, wherein the predetermined criteria include a maximum difference of levels of sub-cuts connected in each cut as a first criterion.
    Type: Application
    Filed: August 1, 2019
    Publication date: November 21, 2019
    Inventors: Kangwook JO, Jeongbin KIM, Minyoung IM, Taehee YOU, Eui-Young CHUNG, Hongil YOON
  • Patent number: 10419001
    Abstract: A look up table (LUT) includes a decoder configured to decode input signals and to output decoded signals, a storage unit including a plurality of magnetic elements an being configured to select one or more of the plurality of magnetic elements in response to the decoded signals and a signal input/output (TO) unit configured to output an output signal corresponding to the selected one or more magnetic elements and to program the selected one or more magnetic elements by receiving a write signal.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: September 17, 2019
    Assignees: SK Hynix Inc., Industry-Academic Cooperation Foundation Yonsei University
    Inventors: Kangwook Jo, Jeongbin Kim, Minyoung Im, Taehee You, Eui-Young Chung, Hongil Yoon
  • Patent number: 10290339
    Abstract: An operating method of a magnetic memory device may include: a first step of retrieving write data to be written to a plurality of magnetic memory cells sharing a bit line according to a write request, the write data including more of a first type of data than a second type of data; a second step of writing the first type of data simultaneously to all cells of the plurality of magnetic memory cells; and a third step of writing the second type of data to a portion of the plurality of magnetic memory cells, the second type of data being different from the first type of data.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 14, 2019
    Assignees: SK HYNIX INC., INDUSTRY-ACADEMIC COOPERATION FOUNDATION YONSEI UNIVERSITY
    Inventors: Kangwook Jo, Jongil Hong, Hongil Yoon
  • Publication number: 20180287614
    Abstract: A look up table (LUT) includes a decoder configured to decode input signals and to output decoded signals, a storage unit including a plurality of magnetic elements an being configured to select one or more of the plurality of magnetic elements in response to the decoded signals and a signal input/output (TO) unit configured to output an output signal corresponding to the selected one or more magnetic elements and to program the selected one or more magnetic elements by receiving a write signal.
    Type: Application
    Filed: November 2, 2017
    Publication date: October 4, 2018
    Inventors: Kangwook JO, Jeongbin KIM, Minyoung IM, Taehee YOU, Eui-Young CHUNG, Hongil YOON
  • Publication number: 20180268889
    Abstract: A magnetic memory device includes a magnetic element and a write circuit electrically connected to two nodes of the magnetic element and configured to provide a write current to the magnetic element, wherein the write current includes a first current having a first peak applied for a first time period and a second current having a second peak applied for a second time period, where the second peak is smaller than the first peak and the second period is longer than the first time period.
    Type: Application
    Filed: October 4, 2017
    Publication date: September 20, 2018
    Inventors: Sachin PATHAK, Kangwook JO, Jongil HONG, Hongil YOON
  • Publication number: 20180108392
    Abstract: An operating method of a magnetic memory device may include: a first step of retrieving write data to be written to a plurality of magnetic memory cells sharing a bit line according to a write request, the write data including more of a first type of data than a second type of data; a second step of writing the first type of data simultaneously to all cells of the plurality of magnetic memory cells; and a third step of writing the second type of data to a portion of the plurality of magnetic memory cells, the second type of data being different from the first type of data.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Inventors: Kangwook JO, Jongil HONG, Hongil YOON
  • Patent number: 9875782
    Abstract: A magnetic memory device may include a bit line, a plurality of source lines, a plurality of normal cells coupled between the bit line and the plurality of source lines, and each including a magnetic resistance element and a switching element coupled in series to the magnetic resistance element and switched by a word line signal, a dummy cell coupled to the bit line, and a spin-hall effect material layer between the bit line and the magnetic resistance element. The magnetic resistance element may write data according to a first current that flows through the dummy cell and flows in a direction parallel to the magnetic resistance element, and a second current that flows through the magnetic resistance element.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: January 23, 2018
    Assignees: SK HYNIX INC., INDUSTRY—ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Kangwook Jo, Jongil Hong, Hongil Yoon
  • Publication number: 20170221541
    Abstract: A magnetic memory device may include a bit line, a plurality of source lines, a plurality of normal cells coupled between the bit line and the plurality of source lines, and each including a magnetic resistance element and a switching element coupled in series to the magnetic resistance element and switched by a word line signal, a dummy cell coupled to the bit line, and a spin-hall effect material layer between the bit line and the magnetic resistance element. The magnetic resistance element may write data according to a first current that flows through the dummy cell and flows in a direction parallel to the magnetic resistance element, and a second current that flows through the magnetic resistance element.
    Type: Application
    Filed: January 9, 2017
    Publication date: August 3, 2017
    Inventors: Kangwook JO, Jongil HONG, Hongil YOON