Patents by Inventor Christopher Spandikow

Christopher Spandikow 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: 20140143745
    Abstract: A logic verification program, method and system that segments simulation results and then processes the resulting segments separately, and optionally in parallel, reduces memory and other system requirements and improves efficiency of verification of digital logic designs. The verification process fixes up event dependency check for past-directed checkers by including additional information with each segment after an initial segment that describes at least a portion of a state of the logic design, so that resultant events in the current segment that are caused by events in the previous segment(s) can be traced back to those events. Future directed checks are fixed-up by either repeating a failed check with a concatenation of the current segment and a next segment, or by providing an overlap between segments to ensure that the expected time duration between a causative event and the resulting event are included within the same segment file.
    Type: Application
    Filed: November 19, 2012
    Publication date: May 22, 2014
    Applicant: International Business Machines Corporation
    Inventors: Eitan Marcus, Christopher Spandikow, Avi Ziv
  • Publication number: 20070233765
    Abstract: A system and method for test generation for system level verification using parallel algorithms are provided. The present invention generates test patterns for system level tests by exploiting the scalability of parallel algorithms while allowing for data set coloring and expected result checking. Based on the characteristics of the system being tested an iterative parallel algorithm is selected from a plurality of possible parallel algorithms. The selected parallel algorithm is then separated into separate program statements for execution by a plurality of processors. A serial version of the selected algorithm is executed to generate a set of expected results. The devised parallel version of the selected algorithm is then run to generate a set of test result data which is compared to the set of expected results. If the two sets of data match, it is determined that the system is operating correctly.
    Type: Application
    Filed: June 5, 2007
    Publication date: October 4, 2007
    Inventors: Sanjay Gupta, Steven Roberts, Christopher Spandikow
  • Publication number: 20060276998
    Abstract: A system and method for test generation for system level verification using parallel algorithms are provided. The present invention generates test patterns for system level tests by exploiting the scalability of parallel algorithms while allowing for data set coloring and expected result checking. Based on the characteristics of the system being tested an iterative parallel algorithm is selected from a plurality of possible parallel algorithms. The selected parallel algorithm is then separated into separate program statements for execution by a plurality of processors. A serial version of the selected algorithm is executed to generate a set of expected results. The devised parallel version of the selected algorithm is then run to generate a set of test result data which is compared to the set of expected results. If the two sets of data match, it is determined that the system is operating correctly.
    Type: Application
    Filed: June 6, 2005
    Publication date: December 7, 2006
    Inventors: Sanjay Gupta, Steven Roberts, Christopher Spandikow