Patents by Inventor William Draper

William Draper 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 of power supply unit rotating in an information handling system
    Patent number: 9710051
    Abstract: A method of power supply unit rotating in an information handling system (IHS) may include a control unit dividing a power loading of an IHS into N sections, where N corresponds to a number of power supply units coupled to the IHS. The control unit may configure a first power supply unit to an active state and configure one or more remaining power supply units to a suspended state during a first time period. The control unit may configure the first power supply unit to the suspended state and configure a second power supply unit to the active state in response to a second time period being reached. The control unit may rotate the active state among the power supply units in response to sequential time periods being reached. In an embodiment the control unit may rotate the active state sequentially between each of the subsequent power supplies.
    Type: Grant
    Filed: December 31, 2014
    Date of Patent: July 18, 2017
    Assignee: Dell Products, L.P.
    Inventors: Mark A. Muccini, Mehran Mirjafari, William Draper, Ashish Razdan, Lei Wang, John Evren Jenne, Stuart Allen Berke
  • METHODS OF POWER SUPPLY UNIT ROTATING IN AN INFORMATION HANDLING SYSTEM
    Publication number: 20170017293
    Abstract: A method of power supply unit rotating in an information handling system (IHS) may include a control unit dividing a power loading of an IHS into N sections, where N corresponds to a number of power supply units coupled to the IHS. The control unit may configure a first power supply unit to an active state and configure one or more remaining power supply units to a suspended state during a first time period. The control unit may configure the first power supply unit to the suspended state and configure a second power supply unit to the active state in response to a second time period being reached. The control unit may rotate the active state among the power supply units in response to sequential time periods being reached. In an embodiment the control unit may rotate the active state sequentially between each of the subsequent power supplies.
    Type: Application
    Filed: December 31, 2014
    Publication date: January 19, 2017
    Applicant: DELL PRODUCTS, L.P.
    Inventors: Mark A. Muccini, Mehran Mirjafari, William Draper, Ashish Razdan, Wei Wang, John Evren Jenne, Stuart Allen Berke
  • Boost and linear LED control
    Patent number: 9119262
    Abstract: A light emitting diode (LED) lighting system includes a switching power converter having an input for coupling to an alternating current (AC) power source, an output, and a switch. The LED lighting system also includes an LED lighting subsystem coupled to receive power from the output of the switching power converter. The LED lighting subsystem includes a current source for one or more LEDs, and the current source has a control node and a sense node. The LED lighting system additionally includes a switch state controller coupled to the switching power converter and coupled to the LED lighting subsystem. The switch state controller controls switching of the switch and varies a control current provided to the control node of the current source based on at least a parameter sensed from the sense node.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: August 25, 2015
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: John L. Melanson, William Draper
  • BOOST AND LINEAR LED CONTROL
    Publication number: 20150145427
    Abstract: A light emitting diode (LED) lighting system includes a switching power converter having an input for coupling to an alternating current (AC) power source, an output, and a switch. The LED lighting system also includes an LED lighting subsystem coupled to receive power from the output of the switching power converter. The LED lighting subsystem includes a current source for one or more LEDs, and the current source has a control node and a sense node. The LED lighting system additionally includes a switch state controller coupled to the switching power converter and coupled to the LED lighting subsystem. The switch state controller controls switching of the switch and varies a control current provided to the control node of the current source based on at least a parameter sensed from the sense node.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 28, 2015
    Applicant: CIRRUS LOGIC, INC
    Inventors: JOHN L. MELANSON, WILLIAM DRAPER
  • Boost and linear LED control
    Patent number: 9018851
    Abstract: A light emitting diode (LED) lighting system includes a switching power converter having an input for coupling to an alternating current (AC) power source, an output, and a switch. The LED lighting system also includes an LED lighting subsystem coupled to receive power from the output of the switching power converter. The LED lighting subsystem includes a current source for one or more LEDs, and the current source has a control node and a sense node. The LED lighting system additionally includes a switch state controller coupled to the switching power converter and coupled to the LED lighting subsystem. The switch state controller controls switching of the switch and varies a control current provided to the control node of the current source based on at least a parameter sensed from the sense node.
    Type: Grant
    Filed: November 4, 2011
    Date of Patent: April 28, 2015
    Assignee: Cirrus Logic, Inc
    Inventors: John Laurence Melanson, William Draper