Patents by Inventor Rak-Joo Sung

Rak-Joo Sung 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: 10482962
    Abstract: A ternary content addressable memory (TCAM) device includes a memory cell. The memory cell includes a data storage circuit, a limiter circuit, and a discharge circuit. The data storage circuit includes a first resistor and a second resistor connected in series to divide a voltage corresponding to search data, and configured to store cell data. The limiter circuit is configured to receive the divided voltage through an input terminal and transmit an output voltage through an output terminal based on a level of the divided voltage. The discharge circuit discharges a matching line indicating whether the stored cell data matches with the search data, based on the output voltage of the limiter circuit.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: November 19, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., Research & Business Foundation, Sungkyunkwan Univ.
    Inventors: Cheol Kim, Hyun-Suk Kang, Kee-Won Kwon, Rak-Joo Sung, Sung-Gi Ahn
  • Patent number: 10395719
    Abstract: A memory device includes a storage circuit, a first driving circuit, and a second driving circuit. The storage circuit stores first data and compares the first data and second data. The first driving circuit selectively drives a matching line to a first logic state, depending on a comparison result of the first data and the second data by the storage circuit. The second driving circuit drives the matching line to a second logic state regardless of the comparison result.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: August 27, 2019
    Assignees: SAMSUNG ELECTRONICS CO., LTD., RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Cheol Kim, Kee-Won Kwon, Ji-Su Min, Rak-Joo Sung, Sung-gi Ahn
  • Publication number: 20190130958
    Abstract: A memory device includes a storage circuit, a first driving circuit, and a second driving circuit. The storage circuit stores first data and compares the first data and second data. The first driving circuit selectively drives a matching line to a first logic state, depending on a comparison result of the first data and the second data by the storage circuit. The second driving circuit drives the matching line to a second logic state regardless of the comparison result.
    Type: Application
    Filed: June 12, 2018
    Publication date: May 2, 2019
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Cheol Kim, Kee-Won Kwon, Ji-Su Min, Rak-Joo Sung, Sung-gi Ahn
  • Publication number: 20190080762
    Abstract: A ternary content addressable memory (TCAM) device includes a memory cell. The memory cell includes a data storage circuit, a limiter circuit, and a discharge circuit. The data storage circuit includes a first resistor and a second resistor connected in series to divide a voltage corresponding to search data, and configured to store cell data. The limiter circuit is configured to receive the divided voltage through an input terminal and transmit an output voltage through an output terminal based on a level of the divided voltage. The discharge circuit discharges a matching line indicating whether the stored cell data matches with the search data, based on the output voltage of the limiter circuit.
    Type: Application
    Filed: May 15, 2018
    Publication date: March 14, 2019
    Inventors: Cheol KIM, HYUN-SUK KANG, KEE-WON KWON, RAK-JOO SUNG, SUNG-GI AHN
  • Patent number: 9776306
    Abstract: The present invention relates to an electrodeposited diamond wire saw using patterned non-conductive materials in which non-conductive materials are pre-patterned along the outer circumference of a wire on which diamond grit should not be rubbed, before the diamond grit is upset, in order to efficiently improve the manufacturing process, and to a method for manufacturing same. According to one preferred embodiment of the invention, the method for manufacturing an electrodeposited diamond wire saw includes: printing a masking solution on the outer circumference of a wire in a plurality of directions when the wire is inserted for patterning; and upsetting diamond grit on the remaining regions of the outer circumference of the wire, with the exception of the patterned region.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: October 3, 2017
    Assignee: EHWA DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Seh-Kwang Lee, Rak-Joo Sung, Sang-Wook Park
  • Publication number: 20140246005
    Abstract: The present invention relates to an electrodeposited diamond wire saw using patterned non-conductive materials in which non-conductive materials are pre-patterned along the outer circumference of a wire on which diamond grit should not be rubbed, before the diamond grit is upset, in order to efficiently improve the manufacturing process, and to a method for manufacturing same. According to one preferred embodiment of the invention, the method for manufacturing an electrodeposited diamond wire saw includes: printing a masking solution on the outer circumference of a wire in a plurality of directions when the wire is inserted for patterning; and upsetting diamond grit on the remaining regions of the outer circumference of the wire, with the exception of the patterned region.
    Type: Application
    Filed: March 19, 2012
    Publication date: September 4, 2014
    Applicant: EHWA DIAMOND INDUSTRIAL CO., LTD.
    Inventors: Seh-Kwang Lee, Rak-Joo Sung, Sang-Wook Park