Patents by Inventor Rajesh Veerabhadraiah

Rajesh Veerabhadraiah 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: 10831970
    Abstract: Techniques for generating a layout of a multi-port memory cell are provided. A specification describing at least on port within a memory cell is defined. A base memory cell including at least one extension point is modeled. A port that interfaces with the base memory cell is identified from the specification. An electrical interface between the identified port and an extension point of the base memory cell is modeled. In some embodiments, a design bucket is selected from among a predefined set of design buckets based on a count of ports within the memory cell, as described by the specification. Each design bucket corresponding to a respective layout template including the base memory cell and a respective maximum count of ports. Each electrical interface including a port described in the specification of the memory cell is modeled based on the selected design bucket and the respective layout template.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: November 10, 2020
    Assignee: International Business Machines Corporation
    Inventors: Rolf Sautter, Amira Rozenfeld, Shankar Kalyanasundaram, Ananth Nag Raja Darla, Rajesh Veerabhadraiah
  • Publication number: 20200320174
    Abstract: Techniques for generating a layout of a multi-port memory cell are provided. A specification describing at least on port within a memory cell is defined. A base memory cell including at least one extension point is modeled. A port that interfaces with the base memory cell is identified from the specification. An electrical interface between the identified port and an extension point of the base memory cell is modeled. In some embodiments, a design bucket is selected from among a predefined set of design buckets based on a count of ports within the memory cell, as described by the specification. Each design bucket corresponding to a respective layout template including the base memory cell and a respective maximum count of ports. Each electrical interface including a port described in the specification of the memory cell is modeled based on the selected design bucket and the respective layout template.
    Type: Application
    Filed: April 8, 2019
    Publication date: October 8, 2020
    Inventors: Rolf Sautter, Amira Rozenfeld, Shankar Kalyanasundaram, Ananth Nag Raja Darla, Rajesh Veerabhadraiah
  • Publication number: 20180181687
    Abstract: A method includes receiving a register-transfer-level description and a gate-level description for an integrated circuit design. The gate-level description includes one or more spare latches implemented as reconfigurable latch filler cells. The method further includes receiving an engineering change order, and, responsive to the engineering change order, adding the at least one additional latch to the register-transfer-level description and, for at least one of the at least one additional latch, selecting one of the one or more spare latches in the register-transfer-level description to yield a selected spare latch. The method further includes, for the selected spare latch, identifying a selected reconfigurable latch filler cell in the gate-level description and replacing the selected reconfigurable latch filler cell with an operational latch in the gate-level description. The method further includes finalizing the integrated circuit design.
    Type: Application
    Filed: March 14, 2018
    Publication date: June 28, 2018
    Inventors: Ayan Datta, Saurabh Gupta, Jayaprakash Udhayakumar, Rajesh Veerabhadraiah, Alok Verma
  • Publication number: 20180181686
    Abstract: A method includes receiving a register-transfer-level description and a gate-level description for an integrated circuit design. The gate-level description includes one or more spare latches implemented as reconfigurable latch filler cells. The method further includes receiving an engineering change order, and, responsive to the engineering change order, adding the at least one additional latch to the register-transfer-level description and, for at least one of the at least one additional latch, selecting one of the one or more spare latches in the register-transfer-level description to yield a selected spare latch. The method further includes, for the selected spare latch, identifying a selected reconfigurable latch filler cell in the gate-level description and replacing the selected reconfigurable latch filler cell with an operational latch in the gate-level description. The method further includes finalizing the integrated circuit design.
    Type: Application
    Filed: March 14, 2018
    Publication date: June 28, 2018
    Inventors: Ayan Datta, Saurabh Gupta, Jayaprakash Udhayakumar, Rajesh Veerabhadraiah, Alok Verma
  • Patent number: 9965576
    Abstract: A method includes receiving a register-transfer-level description and a gate-level description for an integrated circuit design. The gate-level description includes one or more spare latches implemented as reconfigurable latch filler cells. The method further includes receiving an engineering change order, and, responsive to the engineering change order, adding the at least one additional latch to the register-transfer-level description and, for at least one of the at least one additional latch, selecting one of the one or more spare latches in the register-transfer-level description to yield a selected spare latch. The method further includes, for the selected spare latch, identifying a selected reconfigurable latch filler cell in the gate-level description and replacing the selected reconfigurable latch filler cell with an operational latch in the gate-level description. The method further includes finalizing the integrated circuit design.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: May 8, 2018
    Assignee: International Business Machines Corporation
    Inventors: Ayan Datta, Saurabh Gupta, Jayaprakash Udhayakumar, Rajesh Veerabhadraiah, Alok Verma
  • Patent number: 9953121
    Abstract: A computer-implemented method includes identifying an in initial register-transfer-level description for an integrated circuit design and adding one or more spare latches to the initial register-transfer-level description to yield a modified register-transfer-level description for the integrated circuit design. The computer-implemented method further includes performing placement and routing for the modified register-transfer-level description to yield a gate-level description for the integrated circuit design. The one or more spare latches exist in said gate-level description. The computer-implemented method further includes converting at least one of the one or more spare latches in the gate-level description into a reconfigurable latch filler cell to yield a modified gate-level description for the integrated circuit design and finalizing the integrated circuit design. A corresponding computer program product and computer system are also disclosed.
    Type: Grant
    Filed: May 3, 2016
    Date of Patent: April 24, 2018
    Assignee: International Business Machines Corporation
    Inventors: Ayan Datta, Saurabh Gupta, Jayaprakash Udhayakumar, Rajesh Veerabhadraiah, Alok Verma
  • Publication number: 20170323032
    Abstract: A method includes receiving a register-transfer-level description and a gate-level description for an integrated circuit design. The gate-level description includes one or more spare latches implemented as reconfigurable latch filler cells. The method further includes receiving an engineering change order, and, responsive to the engineering change order, adding the at least one additional latch to the register-transfer-level description and, for at least one of the at least one additional latch, selecting one of the one or more spare latches in the register-transfer-level description to yield a selected spare latch. The method further includes, for the selected spare latch, identifying a selected reconfigurable latch filler cell in the gate-level description and replacing the selected reconfigurable latch filler cell with an operational latch in the gate-level description. The method further includes finalizing the integrated circuit design.
    Type: Application
    Filed: July 21, 2017
    Publication date: November 9, 2017
    Inventors: Ayan Datta, Saurabh Gupta, Jayaprakash Udhayakumar, Rajesh Veerabhadraiah, Alok Verma
  • Publication number: 20170323030
    Abstract: A computer-implemented method includes identifying an in initial register-transfer-level description for an integrated circuit design and adding one or more spare latches to the initial register-transfer-level description to yield a modified register-transfer-level description for the integrated circuit design. The computer-implemented method further includes performing placement and routing for the modified register-transfer-level description to yield a gate-level description for the integrated circuit design. The one or more spare latches exist in said gate-level description. The computer-implemented method further includes converting at least one of the one or more spare latches in the gate-level description into a reconfigurable latch filler cell to yield a modified gate-level description for the integrated circuit design and finalizing the integrated circuit design. A corresponding computer program product and computer system are also disclosed.
    Type: Application
    Filed: May 3, 2016
    Publication date: November 9, 2017
    Inventors: Ayan Datta, Saurabh Gupta, Jayaprakash Udhayakumar, Rajesh Veerabhadraiah, Alok Verma