Patents by Inventor Michael Durr

Michael Durr 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: 12530515
    Abstract: A system and method are provided for detectability analysis to identify defective analog components of a circuit. The method includes applying detectability analysis stimuli to the circuit for the purpose of identifying all detectable defects within a defect universe of the circuit, the defect universe including all actual, and potentially undetectable, defects in the circuit, and the applying resulting in an identification of first defects, which is a subset of all of the actual defects within the defect universe. The method further includes applying a user defect analysis to the circuit to identify second defects, which is a subset of all of the actual defects within the defect universe, determining defects, from the first defects, that are not included in the second defects to be not-covered (NC) defects, grouping the NC defects into clusters, and providing the grouped NC defects as a result of the defect detectability analysis.
    Type: Grant
    Filed: October 28, 2022
    Date of Patent: January 20, 2026
    Assignee: Synopsys, Inc.
    Inventors: Mayukh Bhattacharya, Huiping Huang, Mihir Sherlekar, Michael Durr
  • Patent number: 12271668
    Abstract: This disclosure describes a method for finding equivalent classes of hard defects in a stacked MOSFET array. The method includes identifying the stacked MOSFET array in a circuit netlist. The stacked MOSFET array includes standard MOSFETs sharing gate and bulk terminals. The method further includes determining electrical defects for the standard MOSFETs, grouping the electrical defects into at least one intermediate equivalent defect class based on a topological equivalence of the electrical defects, grouping the electrical defects in the at least one intermediate equivalent defect class into at least one final equivalent defect class based on an electrical equivalence of the electrical defects, performing a defect simulation on an electrical defect in the at least one final equivalent defect class, and attributing a result of the defect simulation on the electrical defect to additional electrical defects in the final equivalent defect class.
    Type: Grant
    Filed: September 19, 2023
    Date of Patent: April 8, 2025
    Assignee: Synopsys, Inc.
    Inventors: Mayukh Bhattacharya, Michal Jerzy Rewienski, Shan Yuan, Michael Durr, Chih Ping Antony Fan
  • Patent number: 11797737
    Abstract: This disclosure describes a method for finding equivalent classes of hard defects in a stacked MOSFET array. The method includes identifying the stacked MOSFET array in a circuit netlist. The stacked MOSFET array includes standard MOSFETs sharing gate and bulk terminals. The method further includes determining electrical defects for the standard MOSFETs, grouping the electrical defects into at least one intermediate equivalent defect class based on a topological equivalence of the electrical defects, grouping the electrical defects in the at least one intermediate equivalent defect class into at least one final equivalent defect class based on an electrical equivalence of the electrical defects, performing a defect simulation on an electrical defect in the at least one final equivalent defect class, and attributing a result of the defect simulation on the electrical defect to additional electrical defects in the final equivalent defect class.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: October 24, 2023
    Assignee: Synopsys, Inc.
    Inventors: Mayukh Bhattacharya, Michal Jerzy Rewienski, Shan Yuan, Michael Durr, Chih Ping Antony Fan
  • Patent number: 11763056
    Abstract: A method of simulating defects in an analog circuit design includes, in part, defining a multitude of defect models, defining a defect scope associated with the defect models, and compiling, by a processor, the defect models, the defect scope, and a netlist associated with the analog circuit design. The method further includes, in part, scanning the netlist to identify a multitude of nodes to which a multitude of defects defined by the defect models and the defect scope are applied, injecting the multitude of defects at the identified nodes, and simulating the analog circuit design using the injected defects.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: September 19, 2023
    Assignee: Synopsys, Inc.
    Inventors: Mayukh Bhattacharya, Michael Durr, Mira Tzakova, Beatrice Solignac, Rayson Yam
  • Publication number: 20210374313
    Abstract: This disclosure describes a method for finding equivalent classes of hard defects in a stacked MOSFET array. The method includes identifying the stacked MOSFET array in a circuit netlist. The stacked MOSFET array includes standard MOSFETs sharing gate and bulk terminals. The method further includes determining electrical defects for the standard MOSFETs, grouping the electrical defects into at least one intermediate equivalent defect class based on a topological equivalence of the electrical defects, grouping the electrical defects in the at least one intermediate equivalent defect class into at least one final equivalent defect class based on an electrical equivalence of the electrical defects, performing a defect simulation on an electrical defect in the at least one final equivalent defect class, and attributing a result of the defect simulation on the electrical defect to additional electrical defects in the final equivalent defect class.
    Type: Application
    Filed: August 12, 2021
    Publication date: December 2, 2021
    Applicant: Synopsys, Inc.
    Inventors: Mayukh BHATTACHARYA, Michal Jerzy REWIENSKI, Shan YUAN, Michael DURR, Chih Ping Antony FAN
  • Publication number: 20210326506
    Abstract: A method of simulating defects in an analog circuit design includes, in part, defining a multitude of defect models, defining a defect scope associated with the defect models, and compiling, by a processor, the defect models, the defect scope, and a netlist associated with the analog circuit design. The method further includes, in part, scanning the netlist to identify a multitude of nodes to which a multitude of defects defined by the defect models and the defect scope are applied, injecting the multitude of defects at the identified nodes, and simulating the analog circuit design using the injected defects.
    Type: Application
    Filed: April 20, 2021
    Publication date: October 21, 2021
    Inventors: Mayukh Bhattacharya, Michael Durr, Mira Tzakova, Beatrice Solignac, Rayson Yam
  • Publication number: 20210312113
    Abstract: In modern VLSI technology, often, stacked arrays of smaller sized MOSFETs are used to achieve the desired width and length of a design MOSFET. In analog defect simulation, each physical transistor can contribute to the circuit's defect universe and this can directly lead to tremendous increase in defect simulation time. Here we propose a method of finding equivalent defects in the context of stacked MOSFET arrays that can lead to significant reduction in defect simulation effort and yet provide accurate defect coverage results.
    Type: Application
    Filed: April 2, 2021
    Publication date: October 7, 2021
    Applicant: Synopsys, Inc.
    Inventors: Mayukh BHATTACHARYA, Michal Jerzy Rewienski, Shan Yuan, Michael Durr, Chih Ping Antony Fan
  • Publication number: 20060003156
    Abstract: The present invention relates to a method of controlling light diffusion and/or glare from a surface, in particular from a reflective back plane. It furthermore relates to a display with controlled light diffusion and to the use of a nanoparticle film for controlling light diffusion and/or glare from a surface.
    Type: Application
    Filed: June 24, 2005
    Publication date: January 5, 2006
    Inventors: Akira Masutani, Bettina Schuller, Michael Durr, Anthony Roberts, Akio Yasuda
  • Publication number: 20040226602
    Abstract: The invention relates to a porous film for use in an electronic device, uses of such a porous film, a method of producing a porous film and a porous film produced by said method.
    Type: Application
    Filed: March 22, 2004
    Publication date: November 18, 2004
    Inventors: Michael Durr, Gabriele Nelles, Akio Yasuda