Patents by Inventor Chanwoong HWANG

Chanwoong HWANG 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).

  • Integrated circuit, electronic device including the same, and operating method thereof
    Patent number: 11271584
    Abstract: Disclosed is an integrated circuit, which includes a DTC block including DTCs, receiving a first reference signal and a first division signal, and outputting a second reference signal and a second division signal based on the first reference signal, the first division signal, and control codes, a TDC comparing phases of the second reference signal and the second division signal and outputting a comparison signal, a digital loop filter filtering the comparison signal, an oscillator generating an output signal based on the filtered comparison signal, a delta-sigma modulator outputting a first signal and a quantized noise signal based on first and second division ratio signals, a divider dividing a frequency of the output signal based on the first signal and outputting the first division signal, and a probability modulator generating the control codes based on the quantized noise signal. Probability density functions of the control codes are time-invariant.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 8, 2022
    Assignee: Korean Advanced Institute of Science and Technology
    Inventors: Jaehyouk Choi, Taeho Seong, Yongsun Lee, Chanwoong Hwang, Hangi Park
  • INTEGRATED CIRCUIT, ELECTRONIC DEVICE INCLUDING THE SAME, AND OPERATING METHOD THEREOF
    Publication number: 20220014208
    Abstract: Disclosed is an integrated circuit, which includes a DTC block including DTCs, receiving a first reference signal and a first division signal, and outputting a second reference signal and a second division signal based on the first reference signal, the first division signal, and control codes, a TDC comparing phases of the second reference signal and the second division signal and outputting a comparison signal, a digital loop filter filtering the comparison signal, an oscillator generating an output signal based on the filtered comparison signal, a delta-sigma modulator outputting a first signal and a quantized noise signal based on first and second division ratio signals, a divider dividing a frequency of the output signal based on the first signal and outputting the first division signal, and a probability modulator generating the control codes based on the quantized noise signal. Probability density functions of the control codes are time-invariant.
    Type: Application
    Filed: January 27, 2021
    Publication date: January 13, 2022
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jaehyouk CHOI, Taeho SEONG, Yongsun LEE, Chanwoong HWANG, Hangi PARK