Patents by Inventor Pradish Mathews

Pradish Mathews 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: 9703916
    Abstract: This application discloses a computing system implementing tools and mechanisms that can incorporate a validation system into a circuit design. The validation system can be configured to monitor at least a portion of an electronic device described in the circuit design. The tools and mechanisms can identify one or more trace signals associated with the electronic device to route to the validation system, and identify one or more trigger signals associated with the electronic device to route to the validation system. The tools and mechanisms can configure the validation system to detect a conditional event corresponding a state of the one or more trigger signals, and to transmit the trace signals associated with the electronic device for debugging in response to the detected conditional event.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: July 11, 2017
    Assignee: Mentor Graphics Corporation
    Inventors: Rajeev Sehgal, Srinivas Mandavilli, Pradish Mathews, Ajit Singh, Henry Potts
  • Patent number: 9673819
    Abstract: This application discloses a system to detect meta-stable glitches in a signal, such as an output of latch or other storage element. The system can include a sampling circuit configured to sample an output of a storage element. The system can include a mono-shot circuit configured to monitor the output of the storage element and generate a pulse when the monitored output of the storage element differs from the sampled output. The system can include a drive circuit configured to generate a glitch signal based, at least in part, on the sampled output, and to output the glitch signal in response to the pulse from the mono-shot circuit. The system can include an error detection circuit configured to receive the sampled output from the sampling circuit and the glitch signal from the drive circuit, and to generate an error signal when the sampled output differs from the glitch signal.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: June 6, 2017
    Assignee: Mentor Graphics Corporation
    Inventors: Rajeev Sehgal, Srinivas Mandavilli, Pradish Mathews, Ajit Singh, Henry Potts
  • Publication number: 20170141764
    Abstract: This application discloses a system to detect meta-stable glitches in a signal, such as an output of latch or other storage element. The system can include a sampling circuit configured to sample an output of a storage element. The system can include a mono-shot circuit configured to monitor the output of the storage element and generate a pulse when the monitored output of the storage element differs from the sampled output. The system can include a drive circuit configured to generate a glitch signal based, at least in part, on the sampled output, and to output the glitch signal in response to the pulse from the mono-shot circuit. The system can include an error detection circuit configured to receive the sampled output from the sampling circuit and the glitch signal from the drive circuit, and to generate an error signal when the sampled output differs from the glitch signal.
    Type: Application
    Filed: August 29, 2014
    Publication date: May 18, 2017
    Inventors: Rajeev Sehgal, Srinivas Mandavilli, Pradish Mathews, Ajit Singh, Henry Potts
  • Publication number: 20150220677
    Abstract: This application discloses a computing system implementing tools and mechanisms that can incorporate a validation system into a circuit design. The validation system can be configured to monitor at least a portion of an electronic device described in the circuit design. The tools and mechanisms can identify one or more trace signals associated with the electronic device to route to the validation system, and identify one or more trigger signals associated with the electronic device to route to the validation system. The tools and mechanisms can configure the validation system to detect a conditional event corresponding a state of the one or more trigger signals, and to transmit the trace signals associated with the electronic device for debugging in response to the detected conditional event.
    Type: Application
    Filed: August 29, 2014
    Publication date: August 6, 2015
    Inventors: Rajeev Sehgal, Srinivas Mandavilli, Pradish Mathews, Ajit Singh, Henry Potts
  • Publication number: 20150214933
    Abstract: This application discloses a system to detect meta-stable glitches in a signal, such as an output of latch or other storage element. The system can include a sampling circuit configured to sample an output of a storage element. The system can include a mono-shot circuit configured to monitor the output of the storage element and generate a pulse when the monitored output of the storage element differs from the sampled output. The system can include a drive circuit configured to generate a glitch signal based, at least in part, on the sampled output, and to output the glitch signal in response to the pulse from the mono-shot circuit. The system can include an error detection circuit configured to receive the sampled output from the sampling circuit and the glitch signal from the drive circuit, and to generate an error signal when the sampled output differs from the glitch signal.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 30, 2015
    Inventors: Rajeev Sehgal, Srinivas Mandavilli, Pradish Mathews, Ajit Singh, Henry Potts
  • Patent number: 8539406
    Abstract: Techniques and technology for formally verifying a first electronic design with a second electronic design that has been synthesized from the first electronic design, wherein the synthesis process included structural transformation operations, is provide herein. In various implementations, a first design and a second design are received. The second design having been synthesized from the first design, where no structural transformation operations were performed during synthesis of the second design. Additionally, a third design and a structural transformation guidance file are received. The third design having also been synthesized from the first design, but, where structural transformation operations were performed during synthesis of the third design. The structural transformation guidance file specifies what transformations where made during synthesis.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: September 17, 2013
    Inventors: Michael Mahar, Pradish Mathews, James Henson, Anant-Kumar Jain
  • Publication number: 20120198398
    Abstract: Techniques and technology for formally verifying a first electronic design with a second electronic design that has been synthesized from the first electronic design, wherein the synthesis process included structural transformation operations, is provide herein. In various implementations, a first design and a second design are received. The second design having been synthesized from the first design, where no structural transformation operations were performed during synthesis of the second design. Additionally, a third design and a structural transformation guidance file are received. The third design having also been synthesized from the first design, but, where structural transformation operations were performed during synthesis of the third design. The structural transformation guidance file specifies what transformations where made during synthesis.
    Type: Application
    Filed: January 31, 2011
    Publication date: August 2, 2012
    Inventors: Michael Mahar, Pradish Mathews, James Henson, Anant-Kumar Jain