Patents by Inventor David Abercrombie

David Abercrombie 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: 20240115147
    Abstract: A system and method are provided for determining a pressure associated with a lumen of a body. A wireless sensor is positioned in the lumen of the body. The sensor comprises an LC resonant circuit having a resonant frequency configured to vary in response to changes in pressure in the lumen. One or more sensor calibration parameters are stored at an external base unit. The external based unit generates and transmits an energizing signal. A ring down response is received from the wireless sensor. The system and method determine the resonant frequency of the LC resonant circuit from the ring down response and calculate the pressure in the lumen from the resonant frequency of the LC resonant circuit utilizing the one or more sensor calibration parameters associated with the LC resonant circuit.
    Type: Application
    Filed: December 19, 2023
    Publication date: April 11, 2024
    Inventors: Florent Cros, David O'Brien, Michael Fonseca, Matthew Abercrombie, Jin Woo Park, Angad Singh
  • Publication number: 20220309222
    Abstract: Systems and methods for analyzing a semiconductor layout design around a point of interest (POI) are disclosed. Semiconductor layout designs are a representation of an integrated circuit in terms of planar geometric shapes which make up the components of the integrated circuit, and are used to manufacture the integrated circuit. The layout design may be analyzed using one or more POI-based approaches to determine whether to modify the layout design. In one POI-based approach, set of kernels, tailored to the downstream application, are convolved with a representation of the layout design about or around the POI in order to generate a signature associated with the POI. In turn, the signatures may be analyzed based on the downstream application. Another POI-based approach consists of analyzing geometrical parameters associated with the POI, which may be used during a design stage to identify and modify problem areas in the layout design.
    Type: Application
    Filed: August 30, 2019
    Publication date: September 29, 2022
    Inventors: David A. Abercrombie, Mohamed Alimam Mohamed Selim, Mohamed Bahnas, Hazem Hegazy, Ahmed Hamed Fathi Hamed
  • Patent number: 10552565
    Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: February 4, 2020
    Assignee: Mentor Graphics Corporation
    Inventors: Eugene Anikin, Fedor G. Pikus, Laurence Grodd, David A. Abercrombie, John W. Stedman
  • Publication number: 20170147732
    Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.
    Type: Application
    Filed: November 22, 2016
    Publication date: May 25, 2017
    Applicant: Mentor Graphics Corporation
    Inventors: Eugene Anikin, Fedor G. Pikus, Laurence Grodd, David A. Abercrombie, John W. Stedman
  • Patent number: 9652574
    Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: May 16, 2017
    Assignee: Mentor Graphics Corporation
    Inventors: Eugene Anikin, Fedor G. Pikus, Laurence W. Grodd, David A. Abercrombie, John W. Stedman
  • Patent number: 9507902
    Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: November 29, 2016
    Assignee: Mentor Graphics Corporation
    Inventors: Eugene Anikin, Fedor G. Pikus, Laurence W. Grodd, David A. Abercrombie, John W. Stedman
  • Patent number: 8612919
    Abstract: An analog design-rule-check tool analyzes a microdevice design, such as an integrated circuit design, to identify occurrences of geometric elements that share a specified relationship. When the tool identifies such an occurrence of these geometric elements, it will associate or “cluster” these geometric elements together into an identifiable unit. For specified “clusters” of geometric elements, the analog design-rule-check tool will then determine the value of a measurement or measurements required by a user. Once the analog design-rule-check tool has determined the necessary measurement values, it will use those values to evaluate the function describing a model.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: December 17, 2013
    Assignee: Mentor Graphics Corporation
    Inventors: Fedor G. Pikus, David A. Abercrombie
  • Publication number: 20110289471
    Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.
    Type: Application
    Filed: April 25, 2011
    Publication date: November 24, 2011
    Inventors: Eugene Anikin, Fedor G. Pikus, Laurence W. Grodd, David A. Abercrombie, John W. Stedman
  • Patent number: 7930655
    Abstract: A graphical profile map for integrated circuits on a substrate. The graphical profile map includes a depiction of die placement boundaries and shot placement boundaries for the integrated circuits on the substrate. Also included are integrated circuit property information contours, where the contours are not limited to either of the die placement boundaries or the shot placement boundaries. In this manner, three key pieces of information for the integrated circuits are presented, including integrated circuit property information, die placement, and shot placement. Because these three pieces of information are presented in a graphical form, it is much easier to interpret the information. For example, it is much easier to determine which shot and die placements have properties that are at risk, and which shot and die placements have adequate property profiles.
    Type: Grant
    Filed: May 8, 2008
    Date of Patent: April 19, 2011
    Assignee: LSI Corporation
    Inventors: ChandraSekhar Desu, Nima A. Behkami, Bruce J. Whitefield, David A. Abercrombie, David J. Sturtevant
  • Patent number: 7725849
    Abstract: Techniques are disclosed for determining the likelihood that a known feature in an integrated circuit design will cause a defect during the manufacturing process. According to some of these techniques, various logical units that incorporate an identified design feature are identified, and the amount that the design feature occurs in each of a plurality of these logical units is determined. The failure rate of integrated circuit portions corresponding to at least these logical units are then obtained. A feature failure coefficient indicating the likelihood that the feature will cause a defect then is determined by correlating the failure rates with the amount of occurrences of the feature.
    Type: Grant
    Filed: October 3, 2005
    Date of Patent: May 25, 2010
    Assignee: Mentor Graphics Corporation
    Inventors: David Abercrombie, Bernd Karl Ferdinand Koenemann
  • Patent number: 7653523
    Abstract: An embodiment of the present invention provides a method to utilize data from many different die sizes and products so that highly detailed wafer profiles can be generated that have an improved signal to noise ratio and spatial resolution. Instead of being limited to single die size like normal wafer maps, this method takes advantage of multiple die sizes and their variation in placement on the wafer to increase the information available about the wafer patterns.
    Type: Grant
    Filed: December 15, 2003
    Date of Patent: January 26, 2010
    Assignee: LSI Corporation
    Inventors: Bruce Whitefield, David Abercrombie
  • Publication number: 20090077506
    Abstract: Techniques are disclosed for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define empty regions that can be filled with fill polygons (referred to hereafter as “fill” regions). Next, a pattern of fill polygons is generated. After the fill polygons have been defined, the layout design for the layer is divided into separate areas or “windows,” and a target density for each window is determined. Once this target density for the window has been determined, the fill polygons required to most closely approach this target density are generated and added to the circuit layout design. This process may be repeated with progressively different (e.g., smaller) fill polygons, until each window meets or exceeds both the specified minimum density and complies with the specified maximum density gradient.
    Type: Application
    Filed: May 15, 2008
    Publication date: March 19, 2009
    Inventors: Eugene Anikin, Fedor Pikus, Laurence Grodd, David A. Abercrombie, John W. Stedman
  • Patent number: 7460211
    Abstract: An apparatus includes an edge expose unit for exposing an annular area in an edge exclusion zone of a wafer to radiation having a wavelength suitable for removing a film from the wafer in the annular area and a radiation modulator coupled to the edge expose unit for modulating the radiation to pattern the film in the annular area.
    Type: Grant
    Filed: May 12, 2006
    Date of Patent: December 2, 2008
    Assignee: LSI Corporation
    Inventors: Bruce Whitefield, David Abercrombie
  • Patent number: 7454387
    Abstract: A method of isolating sources of variance in parametric data includes steps of: (a) cleaning a data set of measurements for a plurality of parameters; (b) generating a principal component analysis basis from the cleaned data set; (c) estimating an independent component analysis model from the principal component analysis basis; (d) calculating percentages of variance for the plurality of parameters explained by each component in the estimated independent component analysis model; (e) if the calculated percentages of variance indicate that a component is a minor component, then transferring control to step (f), else transferring control to step (g); (f) removing the minor component from the principal component analysis basis and transferring control to step (c); and (g) generating as output the estimated independent component analysis model wherein no component of the independent component analysis model is a minor component.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: November 18, 2008
    Assignee: LSI Corporation
    Inventors: David Abercrombie, Thaddeus T. Shannon, III, James McNames
  • Publication number: 20080216048
    Abstract: A graphical profile map for integrated circuits on a substrate. The graphical profile map includes a depiction of die placement boundaries and shot placement boundaries for the integrated circuits on the substrate. Also included are integrated circuit property information contours, where the contours are not limited to either of the die placement boundaries or the shot placement boundaries. In this manner, three key pieces of information for the integrated circuits are presented, including integrated circuit property information, die placement, and shot placement. Because these three pieces of information are presented in a graphical form, it is much easier to interpret the information. For example, it is much easier to determine which shot and die placements have properties that are at risk, and which shot and die placements have adequate property profiles.
    Type: Application
    Filed: May 8, 2008
    Publication date: September 4, 2008
    Applicant: LSI CORPORATION
    Inventors: ChandraSekhar Desu, Nima A. Behkami, Bruce J. Whitefield, David A. Abercrombie, David J. Sturtevant
  • Publication number: 20080189667
    Abstract: An analog design-rule-check tool analyzes a microdevice design, such as an integrated circuit design, to identify occurrences of geometric elements that share a specified relationship. When the tool identifies such an occurrence of these geometric elements, it will associate or “cluster” these geometric elements together into an identifiable unit. For specified “clusters” of geometric elements, the analog design-rule-check tool will then determine the value of a measurement or measurements required by a user. Once the analog design-rule-check tool has determined the necessary measurement values, it will use those values to evaluate the function describing a model.
    Type: Application
    Filed: November 20, 2007
    Publication date: August 7, 2008
    Inventors: Fedor G. Pikus, David A. Abercrombie
  • Patent number: 7395522
    Abstract: A graphical profile map for integrated circuits on a substrate. The graphical profile map includes a depiction of die placement boundaries and shot placement boundaries for the integrated circuits on the substrate. Also included are integrated circuit property information contours, where the contours are not limited to either of the die placement boundaries or the shot placement boundaries. In this manner, three key pieces of information for the integrated circuits are presented, including integrated circuit property information, die placement, and shot placement. Because these three pieces of information are presented in a graphical form, it is much easier to interpret the information. For example, it is much easier to determine which shot and die placements have properties that are at risk, and which shot and die placements have adequate property profiles.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: July 1, 2008
    Assignee: LSI Corporation
    Inventors: ChandraSekhar Desu, Nima A. Behkami, Bruce J. Whitefield, David A. Abercrombie, David J. Sturtevant
  • Patent number: 7390680
    Abstract: A method and system for selectively identifying reliability risk die based on characteristics of local regions on a wafer by computing particle sensitive yield and using the particle sensitive yield to identify reliability risk die. Specifically, a bin characteristics database which identifies hard and soft bins that are sensitive to different failure mechanisms is maintained, and the bin characteristics database is used to compute particle sensitive yield. It is determined whether the particle sensitive yield of the local region around the current die is less than a pre-set threshold, and the die is downgraded if the particle sensitive yield of the local region around the current die is less than the pre-set threshold. If the particle sensitive yield of the local region around the current die is not less than the pre-set threshold, the die is not downgraded.
    Type: Grant
    Filed: January 6, 2005
    Date of Patent: June 24, 2008
    Assignee: LSI Corporation
    Inventors: Ramon Gonzales, Kevin Cota, Manu Rehani, David Abercrombie
  • Publication number: 20080034332
    Abstract: Techniques are provided for optimizing the pattern density in the circuit layout design of a circuit layer. A layer in circuit design is analyzed to define fill regions that can be filled with fill polygons A pattern of fill polygons also is generated, to fill the fill regions. The layout design for the layer then is divided into separate areas or “windows,” and a target density for each window is determined. More particularly, each window is analyzed to determine a target density for the window that will satisfy specified density constraint values, such as a minimum density constraint, a maximum density constraint, or a maximum density gradient constraint. In some implementations, the target density will be the smallest density that will comply with each of the specified density value constraints. Once the target density for the window has been determined, the fill polygons required to most closely approach this target density are selected and added to the circuit layout design.
    Type: Application
    Filed: May 1, 2007
    Publication date: February 7, 2008
    Applicant: Mentor Graphics Corporation
    Inventors: Eugene Anikin, Fedor Pikus, John Stedman, Laurence Grodd, David Abercrombie
  • Publication number: 20070143718
    Abstract: Techniques are disclosed for determining the likelihood that a known feature in an integrated circuit design will cause a defect during the manufacturing process. According to some of these techniques, various logical units that incorporate an identified design feature are identified, and the amount that the design feature occurs in each of a plurality of these logical units is determined. The failure rate of integrated circuit portions corresponding to at least these logical units are then obtained. A feature failure coefficient indicating the likelihood that the feature will cause a defect then is determined by correlating the failure rates with the amount of occurrences of the feature.
    Type: Application
    Filed: October 3, 2005
    Publication date: June 21, 2007
    Applicant: Mentor Graphics Corp.
    Inventors: David Abercrombie, Bernd Ferdinend Koonemann