Patents by Inventor Bo Bogeskov Thomsen

Bo Bogeskov Thomsen 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).

  • Differential voltage mode driver and digital impedance caliberation of same
    Patent number: 7821290
    Abstract: A differential voltage mode driver and digital impedance calibration of same is provided. In one embodiment, the invention relates to a method of calibrating a differential driver circuit having a plurality of parallel driver stages, the differential driver circuit for driving a differential signal over a transmission line having an impedance, the method including determining an indication of an impedance of a plurality of parallel replica stages, wherein the plurality of parallel replica stages are replicas of the plurality of parallel driver stages, determining a number of the plurality of parallel replica stages to approximately match the measured impedance with the transmission line impedance, and activating a number of the plurality of parallel driver stages equal to the number of the plurality of parallel replica stages. In another embodiment, the invention relates to a differential voltage mode driver using at least one H-bridge driver stage.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: October 26, 2010
    Assignee: Vitesse Semiconductor Corporation
    Inventor: Bo Bøgeskov Thomsen
  • DIFFERENTIAL VOLTAGE MODE DRIVER AND DIGITAL IMPEDANCE CALIBERATION OF SAME
    Publication number: 20100079167
    Abstract: A differential voltage mode driver and digital impedance calibration of same is provided. In one embodiment, the invention relates to a method of calibrating a differential driver circuit having a plurality of parallel driver stages, the differential driver circuit for driving a differential signal over a transmission line having an impedance, the method including determining an indication of an impedance of a plurality of parallel replica stages, wherein the plurality of parallel replica stages are replicas of the plurality of parallel driver stages, determining a number of the plurality of parallel replica stages to approximately match the measured impedance with the transmission line impedance, and activating a number of the plurality of parallel driver stages equal to the number of the plurality of parallel replica stages. In another embodiment, the invention relates to a differential voltage mode driver using at least one H-bridge driver stage.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 1, 2010
    Inventor: Bo Bogeskov Thomsen