Patents by Inventor Donald Rush

Donald Rush 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).

  • Methods and systems to calibrate push-pull drivers
    Patent number: 8253440
    Abstract: Methods and systems to calibrate an on-die resistor relative to an operating voltage of an on-die push-pull driver, and to calibrate the push-pull driver relative to the on-die resistor and relative to operating voltages of the push-pull driver. The calibrated on-die resistor may be used to calibrate receive terminations, a differential transmit termination, and a simulated far-end differential receive termination. The calibrated differential transmit termination and simulated far-end differential receive termination may be coupled in parallel to calibrate current drivers. Calibration of the current drivers may include calibrating voltage swing, and may include a first phase that simultaneously adjusts compensation to the current drivers, and a second phase that individually adjusts the compensation to the current drivers.
    Type: Grant
    Filed: September 23, 2009
    Date of Patent: August 28, 2012
    Assignee: Intel Corporation
    Inventors: John Maddux, Luke A. Johnson, Ronald W. Swartz, Donald Rush, Meetul Goyal, Rajashri Doddamani
  • METHODS AND SYSTEMS TO CALIBRATE PUSH-PULL DRIVERS
    Publication number: 20110050280
    Abstract: Methods and systems to calibrate an on-die resistor relative to an operating voltage of an on-die push-pull driver, and to calibrate the push-pull driver relative to the on-die resistor and relative to operating voltages of the push-pull driver. The calibrated on-die resistor may be used to calibrate receive terminations, a differential transmit termination, and a simulated far-end differential receive termination. The calibrated differential transmit termination and simulated far-end differential receive termination may be coupled in parallel to calibrate current drivers. Calibration of the current drivers may include calibrating voltage swing, and may include a first phase that simultaneously adjusts compensation to the current drivers, and a second phase that individually adjusts the compensation to the current drivers.
    Type: Application
    Filed: September 23, 2009
    Publication date: March 3, 2011
    Inventors: John Maddux, Luke A. Johnson, Ronald W. Swartz, Donald Rush, Meetul Goyal, Rajashri Doddamani