Patents by Inventor Ada Chen

Ada Chen 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).

  • Oscillator and self-calibration method thereof
    Patent number: 9071254
    Abstract: An oscillator and a self-calibration method thereof are provided. The oscillator includes: an oscillation unit for generating an oscillation signal; a converting unit for converting frequency of the oscillation signal into a voltage signal; a comparison unit for comparing the voltage signal with a first voltage corresponding to a higher frequency and a second voltage corresponding to a lower frequency, and outputting a comparison result signal; an adjusting unit for storing a calibration value, adjusting the calibration value based on the comparison result signal and outputting a calibration signal corresponding to the adjusted calibration value; and a calibration unit for calibrating the frequency of the oscillation signal based on the calibration signal. Self-calibration for the frequency of the oscillation signal may be achieved, which may ensure the stability of the frequency of the oscillation signal.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: June 30, 2015
    Assignee: Shanghai Huahong Grace Semiconductor Manufacturing Corporation
    Inventors: Ada Chen, Emir Yu
  • OSCILLATOR AND SELF-CALIBRATION METHOD THEREOF
    Publication number: 20140176245
    Abstract: An oscillator and a self-calibration method thereof are provided. The oscillator includes: an oscillation unit for generating an oscillation signal; a converting unit for converting frequency of the oscillation signal into a voltage signal; a comparison unit for comparing the voltage signal with a first voltage corresponding to a higher frequency and a second voltage corresponding to a lower frequency, and outputting a comparison result signal; an adjusting unit for storing a calibration value, adjusting the calibration value based on the comparison result signal and outputting a calibration signal corresponding to the adjusted calibration value; and a calibration unit for calibrating the frequency of the oscillation signal based on the calibration signal. Self-calibration for the frequency of the oscillation signal may be achieved, which may ensure the stability of the frequency of the oscillation signal.
    Type: Application
    Filed: September 20, 2013
    Publication date: June 26, 2014
    Applicant: Grace Semiconductor Manufacturing Corporation
    Inventors: Ada Chen, Emir Yu