Patents by Inventor Robert D. Nowak

Robert D. Nowak 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).

  • Network tomography using closely-spaced unicast packets
    Patent number: 6839754
    Abstract: This work discloses a unicast, end-to-end network performance measurement process which is capable of determining internal network losses, delays, and probability mass functions for these characteristics. The process is based on using groups of closely-spaced communications packets to determine the information necessary for inferring the performance characteristics of communications links internal to the network. Computationally efficient estimation algorithms are provided.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: January 4, 2005
    Assignee: WM. Marsh Rice University
    Inventors: Robert D. Nowak, Mark J. Coates
  • Network Tomography Using Close-Spaced Unicast Packets
    Publication number: 20020116154
    Abstract: This work discloses a unicast, end-to-end network performance measurement process which is capable of determining internal network losses, delays, and probability mass functions for these characteristics. The process is based on using groups of closely-spaced communications packets to determine the information necessary for inferring the performance characteristics of communications links internal to the network. Computationally efficient estimation algorithms are provided.
    Type: Application
    Filed: September 14, 2001
    Publication date: August 22, 2002
    Inventors: Robert D. Nowak, Mark J. Coates
  • Artifact reduction method for tomographic image reconstruction using cross-plane rays
    Patent number: 5400377
    Abstract: A cone beam scanning apparatus reduces image artifacts incident to cone beam geometry by decomposing an acquired image into soft tissue and bone and air images based on the density of the pixels in that image. The soft tissue image is filtered to remove frequency space data corresponding to zones of incomplete frequency space data in the original projection image to remove the generated artifacts.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: March 21, 1995
    Assignee: General Electric Company
    Inventors: Hui Hu, Robert D. Nowak