Patents by Inventor Frank Bognar

Frank Bognar 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).

  • Power supply circuit and method for providing output voltage to charge a battery
    Patent number: 8519671
    Abstract: Various embodiments are described herein for a charging device and an associated charging method for charging a rechargeable battery. The charging device generally includes a current source that is coupled to a power source and configured to provide a charging current to the rechargeable battery. The charging device further includes a controller that is configured to control the current source to provide the charging current with an amplitude that is less than the charging current required by the rechargeable battery in a given charging state to bring an output voltage of the current source towards the voltage of the rechargeable battery.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: August 27, 2013
    Assignee: BlackBerry Limited
    Inventors: Cheng Bao, Martin Guthrie, Frank Bognar
  • POWER SUPPLY CIRCUIT AND METHOD FOR PROVIDING OUTPUT VOLTAGE
    Publication number: 20100066311
    Abstract: Various embodiments are described herein for a charging device and an associated charging method for charging a rechargeable battery. The charging device generally includes a current source that is coupled to a power source and configured to provide a charging current to the rechargeable battery. The charging device further includes a controller that is configured to control the current source to provide the charging current with an amplitude that is less than the charging current required by the rechargeable battery in a given charging state to bring an output voltage of the current source towards the voltage of the rechargeable battery.
    Type: Application
    Filed: September 15, 2008
    Publication date: March 18, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Cheng Bao, Martin Guthrie, Frank Bognar