Patents by Inventor Minji Hyun

Minji Hyun 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).

  • System for generating low-jitter digital clock signals using pulsed laser
    Patent number: 11082032
    Abstract: A low-jitter digital clock signal generating system which uses optical pulses output from a pulse laser includes a first balanced photodetector that converts first and second optical pulses with a delayed time interval into first and second electrical pulses through first and second photodiodes and outputs first and second modulated pulses generated by allowing the first and second electrical pulses to partially overlap each other, a second balanced photodetector that converts third and fourth optical pulses with the delayed time interval into third and fourth electrical pulses through third and fourth photodiodes, and outputs a second modulated pulse generated by allowing the third and fourth electrical pulses to partially overlap each other, and a capacitor. The capacitor is charged by the first modulated pulse, is discharged by the second modulated pulse, and outputs a voltage according to the charging and discharging as a clock signal.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: August 3, 2021
    Assignees: Korea Advanced Institute of Science and Technology, Korean University Research and Business Foundation, Sejong Campus
    Inventors: Jungwon Kim, Hayun Cecillia Chung, Minji Hyun, Yongjin Na
  • SYSTEM FOR GENERATING LOW-JITTER DIGITAL CLOCK SIGNALS USING PULSED LASER
    Publication number: 20200350898
    Abstract: A low-jitter digital clock signal generating system which uses optical pulses output from a pulse laser includes a first balanced photodetector that converts first and second optical pulses with a delayed time interval into first and second electrical pulses through first and second photodiodes and outputs first and second modulated pulses generated by allowing the first and second electrical pulses to partially overlap each other, a second balanced photodetector that converts third and fourth optical pulses with the delayed time interval into third and fourth electrical pulses through third and fourth photodiodes, and outputs a second modulated pulse generated by allowing the third and fourth electrical pulses to partially overlap each other, and a capacitor. The capacitor is charged by the first modulated pulse, is discharged by the second modulated pulse, and outputs a voltage according to the charging and discharging as a clock signal.
    Type: Application
    Filed: February 26, 2020
    Publication date: November 5, 2020
    Applicants: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY, KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEJONG CAMPUS
    Inventors: Jungwon Kim, Hayun Cecilla Chung, Minji Hyun, Yongjin Na