Patents by Inventor James Easton Cameron Brown

James Easton Cameron Brown 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).

  • Phase-locked loop with a digital calibration loop and an analog calibration loop
    Patent number: 7420427
    Abstract: A phase-locked loop (PLL) architecture (100) is provided that includes a voltage-controlled oscillator (VCO) (116). The PLL architecture (100) also includes a digital calibration loop (132) coupled to the VCO (116). The digital calibration loop (132) implements a digital filter (126) to provide a digital control to the VCO (116) for centering a VCO frequency output. The PLL architecture (100) also includes an analog calibration loop (130) coupled to the VCO (116). The analog calibration loop (130) provides an analog control to the VCO (116) for adjusting the centered VCO frequency output.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: September 2, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: James Easton Cameron Brown, Hans Thomas Cramer