Patents by Inventor Jonathan C. Grigsby

Jonathan C. Grigsby 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).

  • Subscriber line interface circuit with intra-operational state selectable supply
    Patent number: 8467520
    Abstract: A method of generating a plurality of supply voltages for a plurality of subscriber line channels includes generating a first target VBAT value for a first associated linefeed driver from a first VBAT control. A second target VBAT value for a second associated linefeed driver is generated from a second VBAT control. A selected target VBAT value is generated based upon the first and second target VBAT values. A magnitude of the selected target VBAT value is not less than any maximum of a magnitude of the first and second target VBAT values. A switching regulator is controlled to provide a first generated VBAT corresponding to the selected target VBAT value, wherein the switching regulator provides a second generated VBAT having a pre-determined proportional relationship (p) to the first generated VBAT.
    Type: Grant
    Filed: October 23, 2010
    Date of Patent: June 18, 2013
    Assignee: Silicon Laboratories Inc.
    Inventors: Yan Zhou, Sean A. Lofthouse, Jonathan C. Grigsby
  • Subscriber Line Interface Circuit with Intra-Operational State Selectable Supply
    Publication number: 20120098333
    Abstract: A method of generating a plurality of supply voltages for a plurality of subscriber line channels includes generating a first target VBAT value for a first associated linefeed driver from a first VBAT control. A second target VBAT value for a second associated linefeed driver is generated from a second VBAT control. A selected target VBAT value is generated based upon the first and second target VBAT values. A magnitude of the selected target VBAT value is not less than any maximum of a magnitude of the first and second target VBAT values. A switching regulator is controlled to provide a first generated VBAT corresponding to the selected target VBAT value, wherein the switching regulator provides a second generated VBAT having a pre-determined proportional relationship (p) to the first generated VBAT.
    Type: Application
    Filed: October 23, 2010
    Publication date: April 26, 2012
    Inventors: Yan Zhou, Sean A. Lofthouse, Jonathan C. Grigsby