Patents by Inventor Stéphane Colomines

Stéphane Colomines 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).

  • PLL system and method for controlling a gain of a VCO circuit
    Patent number: 8912857
    Abstract: A phase locked loop system, comprises: a voltage controlled oscillator circuit, comprising a first plurality of switchable varactors for selecting a frequency band of the VCO, that has a gain that changes with frequency band, and a second plurality of switchable varactors for varying the gain in the selected band. The PLL system has a PLL feedback circuit comprising a switching device for switching the feedback circuit to an open loop state wherein a plurality of predefined tuning voltages can be applied to the VCO; a frequency measurement device for measuring the synthesized VCO frequency; and a control unit operable to determine the gain with respect to the synthesized frequency and the tuning voltages.
    Type: Grant
    Filed: April 18, 2008
    Date of Patent: December 16, 2014
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Hugues Beaulaton, Thierry Cassagnes, Stéphane Colomines, Didier Salle
  • PLL SYSTEM AND METHOD FOR CONTROLLING A GAIN OF A VCO CIRCUIT
    Publication number: 20130187719
    Abstract: A phase locked loop system, comprises: a voltage controlled oscillator circuit, comprising a first plurality of switchable varactors for selecting a frequency band of the VCO, that has a gain that changes with frequency band, and a second plurality of switchable varactors for varying the gain in the selected band. The PLL system has a PLL feedback circuit comprising a switching device for switching the feedback circuit to an open loop state wherein a plurality of predefined tuning voltages can be applied to the VCO; a frequency measurement device for measuring the synthesized VCO frequency; and a control unit operable to determine the gain with respect to the synthesized frequency and the tuning voltages.
    Type: Application
    Filed: April 18, 2008
    Publication date: July 25, 2013
    Applicant: Freescale Semiconductor, Inc
    Inventors: Hugues Beaulaton, Thierry Cassagnes, Stéphane Colomines, Didier Salle