Patents by Inventor Junhui Gu

Junhui Gu 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: 9048820
    Abstract: A high-speed fully differential clock duty cycle calibration circuit applied to calibrating the clock duty cycle in a high-speed system. The circuit detects the duty cycle with a continuous time integrator, and directly adjusts the duty cycle on a clock transmission link so as to increase the working speed. Being of a fully differential circuit structure, the circuit can calibrate the duty cycle under a designated process within a higher and wider frequency range, and has relatively good constraining force for process mismatch and common mode noise. The circuit comprises adjustment level ADJ1 and ADJ2, a first buffer level BUF1, a second buffer level BUF2 and a duty cycle detection level DCD.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: June 2, 2015
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Longxing Shi, Danhong Gu, Junhui Gu, Jianhui Wu, Wei Zhao, Zhiyi Ye, Dahai Hu, Meng Zhang, Hong Li
  • Publication number: 20140002158
    Abstract: A high-speed fully differential clock duty cycle calibration circuit applied to calibrating the clock duty cycle in a high-speed system. The circuit detects the duty cycle with a continuous time integrator, and directly adjusts the duty cycle on a clock transmission link so as to increase the working speed. Being of a fully differential circuit structure, the circuit can calibrate the duty cycle under a designated process within a higher and wider frequency range, and has relatively good constraining force for process mismatch and common mode noise. The circuit comprises adjustment level ADJ1 and ADJ2, a first buffer level BUF1, a second buffer level BUF2 and a duty cycle detection level DCD.
    Type: Application
    Filed: August 18, 2011
    Publication date: January 2, 2014
    Applicant: SOUTHEAST UNIVERSITY
    Inventors: Longxing Shi, Danhong Gu, Junhui Gu, Jianhui Wu, Wei Zhao, Zhiyi Ye, Dahai Hu, Meng Zhang, Hong Li