Patents by Inventor Trevor Barcelo

Trevor Barcelo 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).

  • Current control circuitry and methodology for controlling current from current constrained source
    Patent number: 7733061
    Abstract: Current control circuitry for controlling current supplied from a source, that may be a current-constrained source, to a load and a battery. A current limit control circuit limits current supplied by the source to the load in accord with a programmed current limit. Load current is measured, and an input charger control circuit controls magnitude of current to the battery based on the difference between measured load current and battery current programmed to be supplied to the battery, such that the sum of load current and battery current is maintained within the programmed current limit.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: June 8, 2010
    Assignee: Linear Technology Corporation
    Inventors: Roger A. Zemke, David B. Bell, Samuel Nork, Trevor Barcelo
  • Power manager and power managing method for battery-powered application
    Publication number: 20070029975
    Abstract: A power manager is configured to manage power for a battery-powered application. A power source, a load and a battery are interconnected through a circuit path. Power from the power source is provided to the load and battery by a switching regulator. Various implementations are presented.
    Type: Application
    Filed: July 19, 2005
    Publication date: February 8, 2007
    Inventors: Steven Martin, Trevor Barcelo, Samuel Nork, Roger Zemke, David Simmons
  • Current control circuitry and methodology for controlling current from current constrained source
    Publication number: 20060139002
    Abstract: Current control circuitry for controlling current supplied from a source, that may be a current-constrained source, to a load and a battery. A current limit control circuit limits current supplied by the source to the load in accord with a programmed current limit. Load current is measured, and an input charger control circuit controls magnitude of current to the battery based on the difference between measured load current and battery current programmed to be supplied to the battery, such that the sum of load current and battery current is maintained within the programmed current limit.
    Type: Application
    Filed: December 29, 2004
    Publication date: June 29, 2006
    Inventors: Roger Zemke, David Bell, Samuel Nork, Trevor Barcelo
  • Current control circuitry and methodology for controlling current from current source
    Publication number: 20060119320
    Abstract: Current control circuitry for controlling current supplied from a current source to a load and a battery. A circuit path connects the source and the load. Current on the circuit path is limited to a predetermined amount. A voltage on the circuit path is monitored and in response, current to be supplied to the battery from the circuit path is controlled so as to maintain the current on the circuit path within the predetermined amount.
    Type: Application
    Filed: May 3, 2005
    Publication date: June 8, 2006
    Inventors: Samuel Nork, Trevor Barcelo, Roger Zemke, John Shannon