Patents by Inventor Edward J. Segall

Edward J. Segall 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).

  • Method for Position Estimation Using Generalized Error Distributions
    Publication number: 20110205108
    Abstract: A method for improving the results of radio location systems that incorporate weighted least squares optimization generalizes the weighted least squares method by using maximum a posteriori (MAP) probability metrics to incorporate characteristics of the specific positioning problem (e.g., UTDOA). Weighted least squares methods are typically used by TDOA and related location systems including TDOA/AOA and TDOA/GPS hybrid systems. The incorporated characteristics include empirical information about TDOA errors and the probability distribution of the mobile position relative to other network elements. A technique is provided for modeling the TDOA error distribution and the a priori mobile position. A method for computing a MAP decision metric is provided using the new probability distribution models. Testing with field data shows that this method yields significant improvement over existing weighted least squares methods.
    Type: Application
    Filed: April 14, 2011
    Publication date: August 25, 2011
    Applicant: TRUEPOSITION, INC.
    Inventors: Pete A. Boyer, Rashidus S. Mia, Edward J. Segall
  • Method for position estimation using generalized error distributions
    Patent number: 7956808
    Abstract: A method for improving the results of radio location systems that incorporate weighted least squares optimization generalizes the weighted least squares method by using maximum a posteriori (MAP) probability metrics to incorporate characteristics of the specific positioning problem (e.g., UTDOA). Weighted least squares methods are typically used by TDOA and related location systems including TDOA/AOA and TDOA/GPS hybrid systems. The incorporated characteristics include empirical information about TDOA errors and the probability distribution of the mobile position relative to other network elements. A technique is provided for modeling the TDOA error distribution and the a priori mobile position. A method for computing a MAP decision metric is provided using the new probability distribution models. Testing with field data shows that this method yields significant improvement over existing weighted least squares methods.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: June 7, 2011
    Assignee: TruePosition, Inc.
    Inventors: Pete A. Boyer, Rashidus S. Mia, Edward J. Segall
  • Method for Position Estimation Using Generalized Error Distributions
    Publication number: 20100164781
    Abstract: A method for improving the results of radio location systems that incorporate weighted least squares optimization generalizes the weighted least squares method by using maximum a posteriori (MAP) probability metrics to incorporate characteristics of the specific positioning problem (e.g., UTDOA). Weighted least squares methods are typically used by TDOA and related location systems including TDOA/AOA and TDOA/GPS hybrid systems. The incorporated characteristics include empirical information about TDOA errors and the probability distribution of the mobile position relative to other network elements. A technique is provided for modeling the TDOA error distribution and the a priori mobile position. A method for computing a MAP decision metric is provided using the new probability distribution models. Testing with field data shows that this method yields significant improvement over existing weighted least squares methods.
    Type: Application
    Filed: December 30, 2008
    Publication date: July 1, 2010
    Applicant: TRUEPOSITION, INC.
    Inventors: Pete A. Boyer, Rashidus S. Mia, Edward J. Segall