Patents by Inventor Sunmean KIM

Sunmean KIM 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: 11868740
    Abstract: A circuit includes a first full adder, a second full adder, a first half adder, a third full adder configured to receive a sum output signal of the first full adder, a sum output signal of the second full adder, and a sum output signal of the first half adder, a fourth full adder configured to receive a carry output signal of the first full adder, a carry output signal of the second full adder, and a carry output signal of the first half adder, a second half adder configured to receive a carry output signal of the third full adder and a sum output signal of the fourth full adder, and a third half adder configured to receive a carry output signal of the second half adder and a carry output signal of the fourth full adder.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: January 9, 2024
    Assignee: Postech Research and Business Development Foundation
    Inventors: Seokhyeong Kang, Sunmean Kim, Sunghye Park, SungYun Lee
  • Patent number: 11817858
    Abstract: A static ternary gate is disclosed. The static ternary gate includes a drain-ground path configured to output a drain voltage through a first transistor when a first pull-up circuit is turned on, and output a ground voltage through a second transistor when a first pull-down circuit is turned on, a half-drain path configured to output a half-drain voltage through the first transistor and the second transistor when both a second pull-up circuit and a second pull-down circuit are turned on. The first transistor is configured to connect a node between the first pull-up circuit and the second pull-down circuit to an output terminal, and the second transistor is configured to connect a node between the second pull-up circuit and the first pull-down circuit to the output terminal.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: November 14, 2023
    Assignee: POSTECH Research and Business Development Foundation
    Inventors: Seokhyeong Kang, Sunghye Park, SungYun Lee, Sunmean Kim
  • Publication number: 20230170907
    Abstract: Disclosed is an inverter which includes a first P-MOS transistor connected between a node receiving a drain voltage and a first path node and operated based on an input voltage, a first N-MOS transistor connected between the first path node and an output terminal outputting an output voltage and operated based on the drain voltage, a second P-MOS transistor connected between the output terminal and a second path node and operated based on a ground voltage, a second N-MOS transistor connected between the second path node and a node receiving the ground voltage and operated based on the input voltage, a third P-MOS transistor connected between the first path node and the second path node and operated based on the input voltage, and a third N-MOS transistor connected between the first path node and the second path node and operated based on the input voltage.
    Type: Application
    Filed: November 30, 2022
    Publication date: June 1, 2023
    Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION
    Inventors: Seokhyeong KANG, Youngchang CHOI, Sunmean KIM, Kyongsu LEE
  • Patent number: 11533054
    Abstract: A circuit includes a plurality of first counting gates, a first ternary half adder (THA) and a second THA that are connected to the plurality of first counting gates, a third THA configured to receive a sum output signal of the first THA and a sum output signal of the second THA, a first ternary sum gate configured to receive a carry output signal of the first THA and a carry output signal of the second THA, and a second ternary sum gate configured to receive a carry output signal of the third THA and an output signal of the first ternary sum gate, wherein the third THA and the second ternary sum gate may be configured to output voltage signals corresponding to a number of drain voltages among input signals applied to the plurality of first counting gates.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: December 20, 2022
    Assignee: POSTECH Research and Business Development Foundation
    Inventors: Seokhyeong Kang, Sunmean Kim, SungYun Lee, Sunghye Park
  • Publication number: 20220350568
    Abstract: A circuit includes a first full adder, a second full adder, a first half adder, a third full adder configured to receive a sum output signal of the first full adder, a sum output signal of the second full adder, and a sum output signal of the first half adder, a fourth full adder configured to receive a carry output signal of the first full adder, a carry output signal of the second full adder, and a carry output signal of the first half adder, a second half adder configured to receive a carry output signal of the third full adder and a sum output signal of the fourth full adder, and a third half adder configured to receive a carry output signal of the second half adder and a carry output signal of the fourth full adder.
    Type: Application
    Filed: September 29, 2021
    Publication date: November 3, 2022
    Inventors: Seokhyeong KANG, Sunmean KIM, Sunghye PARK, SungYun LEE
  • Publication number: 20220352893
    Abstract: A circuit includes a plurality of first counting gates, a first ternary half adder (THA) and a second THA that are connected to the plurality of first counting gates, a third THA configured to receive a sum output signal of the first THA and a sum output signal of the second THA, a first ternary sum gate configured to receive a carry output signal of the first THA and a carry output signal of the second THA, and a second ternary sum gate configured to receive a carry output signal of the third THA and an output signal of the first ternary sum gate, wherein the third THA and the second ternary sum gate may be configured to output voltage signals corresponding to a number of drain voltages among input signals applied to the plurality of first counting gates.
    Type: Application
    Filed: September 29, 2021
    Publication date: November 3, 2022
    Inventors: Seokhyeong KANG, Sunmean KIM, SungYun LEE, Sunghye PARK
  • Publication number: 20220109444
    Abstract: A static ternary gate is disclosed. The static ternary gate includes a drain-ground path configured to output a drain voltage through a first transistor when a first pull-up circuit is turned on, and output a ground voltage through a second transistor when a first pull-down circuit is turned on, a half-drain path configured to output a half-drain voltage through the first transistor and the second transistor when both a second pull-up circuit and a second pull-down circuit are turned on. The first transistor is configured to connect a node between the first pull-up circuit and the second pull-down circuit to an output terminal, and the second transistor is configured to connect a node between the second pull-up circuit and the first pull-down circuit to the output terminal.
    Type: Application
    Filed: February 12, 2021
    Publication date: April 7, 2022
    Inventors: Seokhyeong KANG, Sunghye PARK, SungYun LEE, Sunmean KIM
  • Patent number: 11036904
    Abstract: Provided is a ternary logic synthesis method at least temporarily performed by a computer, the ternary logic synthesis method including generating a switching table with respect to pull-up and pull-down circuits using a truth table corresponding to a ternary function, converting the switching table into a sum of products (SOP) using a Quine-McCluskey algorithm, minimizing the SOP, and mapping a transistor corresponding to the SOP.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: June 15, 2021
    Assignee: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION
    Inventors: Seokhyeong Kang, Sunmean Kim, Sung-Yun Lee
  • Publication number: 20200210637
    Abstract: Provided is a ternary logic synthesis method at least temporarily performed by a computer, the ternary logic synthesis method including generating a switching table with respect to pull-up and pull-down circuits using a truth table corresponding to a ternary function, converting the switching table into a sum of products (SOP) using a Quine-McCluskey algorithm, minimizing the SOP, and mapping a transistor corresponding to the SOP.
    Type: Application
    Filed: December 13, 2019
    Publication date: July 2, 2020
    Inventors: Seokhyeong KANG, Sunmean KIM, Sung-Yun LEE