Patents by Inventor Dongyu Ou

Dongyu Ou 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).

  • Calibration of interpolating string digital-to-analog converters
    Patent number: 9813074
    Abstract: Methods, apparatus and articles of manufacture (e.g., physical storage media) to calibrate interpolating string digital-to-analog converters are disclosed. Example methods disclosed herein to calibrate a digital-to-analog converter (DAC) include determining a first calibration codeword based on a first nonlinearity error value measured at an output of the DAC when a most-significant-bit (MSB) portion of an input codeword is applied to an input of the DAC. Such disclosed example methods also include determining a second calibration codeword based on a second measured nonlinearity error value measured at the output of the DAC when a least-significant-bit (LSB) portion of the input codeword is applied to the input of the DAC. Such disclosed example methods further include combining the first calibration codeword and the second calibration codeword to determine a third calibration codeword to be accessed by the DAC to calibrate the output of the DAC when the input codeword is applied to the DAC.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: November 7, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Zhang Jun, Xuan Wang, Dongyu Ou, Elliott Zhang, Echo Cao
  • CALIBRATION OF INTERPOLATING STRING DIGITAL-TO-ANALOG CONVERTERS
    Publication number: 20170201265
    Abstract: Methods, apparatus and articles of manufacture (e.g., physical storage media) to calibrate interpolating string digital-to-analog converters are disclosed. Example methods disclosed herein to calibrate a digital-to-analog converter (DAC) include determining a first calibration codeword based on a first nonlinearity error value measured at an output of the DAC when a most-significant-bit (MSB) portion of an input codeword is applied to an input of the DAC. Such disclosed example methods also include determining a second calibration codeword based on a second measured nonlinearity error value measured at the output of the DAC when a least-significant-bit (LSB) portion of the input codeword is applied to the input of the DAC. Such disclosed example methods further include combining the first calibration codeword and the second calibration codeword to determine a third calibration codeword to be accessed by the DAC to calibrate the output of the DAC when the input codeword is applied to the DAC.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 13, 2017
    Inventors: Zhang Jun, Xuan Wang, Dongyu Ou, Elliott Zhang, Echo Cao
  • Calibration of interpolating string digital-to-analog converters
    Patent number: 9621177
    Abstract: Methods, apparatus and articles of manufacture (e.g., physical storage media) to calibrate interpolating string digital-to-analog converters are disclosed. Example methods disclosed herein to calibrate a digital-to-analog converter (DAC) include determining a first calibration codeword based on a first nonlinearity error value measured at an output of the DAC when a most-significant-bit (MSB) portion of an input codeword is applied to an input of the DAC. Such disclosed example methods also include determining a second calibration codeword based on a second measured nonlinearity error value measured at the output of the DAC when a least-significant-bit (LSB) portion of the input codeword is applied to the input of the DAC. Such disclosed example methods further include combining the first calibration codeword and the second calibration codeword to determine a third calibration codeword to be accessed by the DAC to calibrate the output of the DAC when the input codeword is applied to the DAC.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: April 11, 2017
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Zhang Jun, Xuan Wang, Dongyu Ou, Elliott Zhang, Echo Cao