Patents by Inventor Jeffrey G. Koller

Jeffrey G. Koller 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).

  • System and method for power-efficient charging and discharging of a capacitive load from a single source
    Patent number: 5473526
    Abstract: A system and method for efficiently charging and discharging a capacitive load from a single voltage source. The system includes a first switch for selectively connecting the voltage source to the load and a second switch for selectively providing a short across the load as may be common in the art. A particularly novel aspect of the invention resides in the provision of plural capacitive elements and a switching mechanism for selectively connecting each of the capacitive elements to the load whereby the load is gradually charged or discharged. In the illustrative embodiment, the switching mechanism includes a set of switches for selectively connecting each of the capacitive elements to the capacitive load and a switch control mechanism for selectively activating the switches.
    Type: Grant
    Filed: April 22, 1994
    Date of Patent: December 5, 1995
    Assignee: University of Southern California
    Inventors: Lars Svensson, William C. Athas, Jeffrey G. Koller