Patents by Inventor Baribrata Biswas

Baribrata Biswas 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: 8863055
    Abstract: A method and apparatus to provide a capacitance to a design an integrated circuit is described. In one embodiment, the method receive a layout of the integrated circuit and applying canonical hierarchical models to the layout, wherein the canonical hierarchical models include a first type canonical model to capture a first capacitance of a device having a plurality of first conductors and a second type canonical model to capture a second capacitance between at least a portion of the device and one or more second conductors of the integrated circuit. The method further includes determining a capacitance for the layout based on the applying.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: October 14, 2014
    Assignee: Synopsys, Inc.
    Inventors: Arthur Nieuwoudt, Jiyoun Kim, Mathew Koshy, Baribrata Biswas
  • Publication number: 20130339915
    Abstract: A method and apparatus to provide a capacitance to a design an integrated circuit is described. In one embodiment, the method receive a layout of the integrated circuit and applying canonical hierarchical models to the layout, wherein the canonical hierarchical models include a first type canonical model to capture a first capacitance of a device having a plurality of first conductors and a second type canonical model to capture a second capacitance between at least a portion of the device and one or more second conductors of the integrated circuit. The method further includes determining a capacitance for the layout based on the applying.
    Type: Application
    Filed: August 21, 2013
    Publication date: December 19, 2013
    Applicant: Synopsys, Inc.
    Inventors: Arthur Nieuwoudt, Jiyoun Kim, Mathew Koshy, Baribrata Biswas
  • Patent number: 8522181
    Abstract: A technology specific information to design the integrated circuit is received. A plurality of canonical hierarchical models to capture an integrated circuit capacitance are created. The plurality of canonical hierarchical models includes at least a canonical model to capture a capacitance of a device having a plurality of conductors, and a canonical model to capture a capacitance between at least a portion of the device and one or more other conductors of the integrated circuit. The canonical hierarchical models can be applied to a layout of the integrated circuit. A capacitance for the layout can be determined based on the canonical hierarchical models.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: August 27, 2013
    Assignee: Synopsys, Inc.
    Inventors: Arthur Nieuwoudt, Jiyoun Kim, Mathew Koshy, Baribrata Biswas
  • Publication number: 20130191798
    Abstract: A technology specific information to design the integrated circuit is received. A plurality of canonical hierarchical models to capture an integrated circuit capacitance are created. The plurality of canonical hierarchical models includes at least a canonical model to capture a capacitance of a device having a plurality of conductors, and a canonical model to capture a capacitance between at least a portion of the device and one or more other conductors of the integrated circuit. The canonical hierarchical models can be applied to a layout of the integrated circuit. A capacitance for the layout can be determined based on the canonical hierarchical models.
    Type: Application
    Filed: January 24, 2012
    Publication date: July 25, 2013
    Inventors: Arthur Nieuwoudt, Jiyoun Kim, Mathew Koshy, Baribrata Biswas
  • Patent number: 8146032
    Abstract: One embodiment of the present invention provides a system that performs an RLC extraction for a three-dimensional integrated circuit (3D-IC) die. During operation, the system receives a 3D-IC die description. The system then transforms the 3D-IC die description into a set of 2D-IC die descriptions, wherein the transform maintains equivalency between the set of 2D-IC die descriptions and the 3D-IC die description. Next, for each 2D-IC die description in the set of 2D-IC die descriptions, the system performs an electrical property extraction using a 2D-IC extraction tool to obtain a 2D-IC RLC netlist file. The system then combines the set of 2D-IC RLC netlist files for the set of 2D-IC die descriptions to form an RLC netlist file for the 3D-IC die description.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: March 27, 2012
    Assignee: Synopsys, Inc.
    Inventors: Qiushi Chen, Beifang Qiu, Charles C. Chiang, Xiaoping Hu, Mathew Koshy, Baribrata Biswas
  • Publication number: 20100199236
    Abstract: One embodiment of the present invention provides a system that performs an RLC extraction for a three-dimensional integrated circuit (3D-IC) die. During operation, the system receives a 3D-IC die description. The system then transforms the 3D-IC die description into a set of 2D-IC die descriptions, wherein the transform maintains equivalency between the set of 2D-IC die descriptions and the 3D-IC die description. Next, for each 2D-IC die description in the set of 2D-IC die descriptions, the system performs an electrical property extraction using a 2D-IC extraction tool to obtain a 2D-IC RLC netlist file. The system then combines the set of 2D-IC RLC netlist files for the set of 2D-IC die descriptions to form an RLC netlist file for the 3D-IC die description.
    Type: Application
    Filed: January 30, 2009
    Publication date: August 5, 2010
    Applicant: SYNOPSYS, INC.
    Inventors: Qiushi Chen, Beifang Qiu, Charles C. Chiang, Xiaoping Hu, Mathew Koshy, Baribrata Biswas
  • Patent number: 7587691
    Abstract: One embodiment of the present invention provides a system for determining an electrical property for an interconnect layer. During operation, the system receives interconnect technology data which includes nominal parameter values for a first interconnect layer, and parameter-variation values which represent variations in the nominal parameter values due to random process variations. Next, the system receives an interconnect template which describes the geometry of a portion of a second interconnect layer. The system then determines electrical property data for the interconnect template using the interconnect technology data. The electrical property data can include a nominal electrical property value, and sensitivity values which represent the sensitivities of the nominal electrical property value to variations in the nominal parameter values. Next, the system stores the electrical property data and the interconnect technology data in a storage.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: September 8, 2009
    Assignee: Synopsys, Inc.
    Inventors: Edhi Sutjahjo, Kishore Singhal, Byungwook Kim, Goetz Leonhardt, Beifang Qiu, Sergey Krasnovsky, Baribrata Biswas, Alex Gyure, Mahmoud Shahram
  • Publication number: 20070124707
    Abstract: One embodiment of the present invention provides a system for determining an electrical property for an interconnect layer. During operation, the system receives interconnect technology data which includes nominal parameter values for a first interconnect layer, and parameter-variation values which represent variations in the nominal parameter values due to random process variations. Next, the system receives an interconnect template which describes the geometry of a portion of a second interconnect layer. The system then determines electrical property data for the interconnect template using the interconnect technology data. The electrical property data can include a nominal electrical property value, and sensitivity values which represent the sensitivities of the nominal electrical property value to variations in the nominal parameter values. Next, the system stores the electrical property data and the interconnect technology data in a storage.
    Type: Application
    Filed: November 14, 2006
    Publication date: May 31, 2007
    Inventors: Edhi Sutjahjo, Kishorc Singhal, Byungwook Kim, Goetz Leonhardt, Beifang Qiu, Sergey Krasnovsky, Baribrata Biswas, Alex Gyure, Mahmoud Shahram