Patents by Inventor John Dunwoody

John Dunwoody 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).

  • Publication number: 20060026234
    Abstract: Functional components of a computer graphics network are separated from one another across a network. Each of these four components—a computer graphics application, user input functionality for the application, a graphics renderer, and a display for a rendered image—is allocated to its own network component, separate from the other components. This allows, for example, a user in one location to provide input to a desired computer graphics application that may be executing elsewhere. The computer graphics application may then have rendering performed by a renderer that is located at yet another location, e.g., centrally to the network. The display may be in still another location, e.g., a distant conference room or a classroom.
    Type: Application
    Filed: July 27, 2004
    Publication date: February 2, 2006
    Inventors: Alexander Chalfin, John Dunwoody, Alpana Kaulgud, Paul Ungar
  • Publication number: 20010034206
    Abstract: A reconfigurable payload for a satellite having a flexible antenna system, a variable downconverter technology and a filter technology that all work in combination to allow the payload of a satellite to be reconfigured in orbit.
    Type: Application
    Filed: December 23, 1998
    Publication date: October 25, 2001
    Applicant: THOMPSON, JAMES D.
    Inventors: JAMES D. THOMPSON, PARTHASARATHY RAMANUJAM, CYNTHIA A. DIXON, DEBBIE H. FEUERBON, DAVID R. GOLDBERG, STEPHEN SICHI, LOMASH SHAH, JOHN DUNWOODY
  • Patent number: 5613197
    Abstract: Input RF signals to a transponder, such as a communications satellite, are down converted to a lower intermediate frequency (IF) that is common for each different channel. The channel signals are all processed at the common IF, and then up converted to different respective transmission frequencies. This allows for a down conversion/signal processing/up conversion unit design that is the same for each channel (except for frequency and gain values), and facilitates the use of inexpensive available standard components as well as low bandwidth channel filters. An improved phase noise cancellation phase lock loop (PLL) is preferably used to generate tuning signals used in the up and down conversion processes. The PLL includes two loop mixers, with the down and up conversion mixing signals taken respectively from the inputs to the first and second loop mixers. The first and second loop mixers receive mixing signals at frequencies (T-R) and (T-IF-N.multidot.
    Type: Grant
    Filed: November 3, 1994
    Date of Patent: March 18, 1997
    Assignee: Hughes Aircraft Co.
    Inventors: Wilbert B. Copeland, Erik Soderburg, John Dunwoody, Robert Brunner, Keith Williams
  • Patent number: 4450649
    Abstract: A fly trap gun is provided with a fly trap carried on the end of a firing rod mounted for longitudinal movement within a barrel. The fly trap defines a trap chamber provided with a sticky area throughout a substantial portion thereof for catching flies or the like trapped therein. An actuating means causes the firing rod and the fly trap mounted thereon to move rapidly from a loaded position to a fired position for trapping a flying insect in the trap chamber and for subsequently catching the trapped insect on the sticky surface.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: May 29, 1984
    Inventor: John A. Dunwoody