Patents by Inventor Stephen A. Muller

Stephen A. Muller 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).

  • Patent number: 7979225
    Abstract: Method and system that test device sensitivity according to whether the device passes or fails when subjected to a test signal. The device may be repeatedly subjected to test signal at varying operating parameters in order to assess pass-fail threshold at which the device transitions from operating properly/improperly to operating improperly/properly.
    Type: Grant
    Filed: June 17, 2008
    Date of Patent: July 12, 2011
    Assignee: Oracle America, Inc.
    Inventors: Stephen A. Muller, Xiao-Ding Cai, Agustin Del Alamo, James M. Frei
  • Publication number: 20090312972
    Abstract: Method and system that test device sensitivity according to whether the device passes or fails when subjected to a test signal. The device may be repeatedly subjected to test signal at varying operating parameters in order to assess pass-fail threshold at which the device transitions from operating properly/improperly to operating improperly/properly.
    Type: Application
    Filed: June 17, 2008
    Publication date: December 17, 2009
    Applicant: SUN MICROSYSTEMS, INC.
    Inventors: Stephen A. Muller, Xiao-Ding Cai, Agustin Del Alamo, James M. Frei
  • Patent number: 7627028
    Abstract: A method for making measurements using a vector network analyzer, and for multi-port S-parameter and T-parameter conversion includes a generalized T-matrix definition that facilitates the conversion between the S-parameters and the T-parameters for multi-port networks based on the well understood and mathematically simple 2-port relations. One contemplated approach generalizes all multi-port networks into two cases: balanced and unbalanced. Through careful selection of the T-matrix, the contemplated method extends 2-port symmetry to multi-port networks and provides an engineering implementable relationship between the S- and T-parameters for multi-port networks. This symmetry extension allows a practical means to cascade and de-embed such networks.
    Type: Grant
    Filed: October 18, 2008
    Date of Patent: December 1, 2009
    Assignee: Sun Microsystems, Inc.
    Inventors: James M. Frei, Xiao-Ding Cai, Stephen A. Muller