Patents by Inventor Prabal K. Bhattacharya

Prabal K. Bhattacharya 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: 8554530
    Abstract: Systems and methods for simulating and verifying a design are contemplated. Various embodiments determine a set of verification rules for a design, wherein the verification rules use a PSL or SVA syntax in a SPICE netlist to describ a property of the circuit design. The state of a circuit at a simulated first time, t1, can be determined. The state at the first time, t1, may be analyzed to determine if a triggering event has occurred. Based on the occurrence of the triggering event, the systems and methods can verify the state at the first time, t1, against the set of verification rules. Some embodiments of the systems and methods described herein can include a mixed-signal circuit including an analog portion and a digital portion, and the analog portion, the mixed-signal portion, or both, may be simulated and verified.
    Type: Grant
    Filed: June 16, 2009
    Date of Patent: October 8, 2013
    Assignee: Cadence Design Systems, Inc.
    Inventors: Donald O'Riordan, Prabal K. Bhattacharya, Walter Hartong, Richard John O'Donovan
  • Patent number: 8401828
    Abstract: Systems and methods for simulating and verifying an analog mixed signal design provide an analog mixed signal testbench configured to verify analog parameters of the design. The testbench can include a mechanism to fetch a value of an analog object in an analog portion of a mixed signal design. The testbench mechanism can include an argument specifying the name of the object and the analog quantity to be fetched for that object. The testbench can retrieve estimated values and can further specify timing constraints specifying absolute times or events at which values are to be measured and returned.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: March 19, 2013
    Assignee: Cadence Design Systems, Inc.
    Inventors: Prabal K. Bhattacharya, Timothy Martin O'Leary, William Scott Cranston, Walter Hartong