Patents by Inventor Bogdan Tutuianu

Bogdan Tutuianu 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: 20230224365
    Abstract: A digital sensor network is overlaid on an integrated circuit for identifying and mapping hotspots in the integrated circuit. The digital sensor network may include a plurality of digital sensors distributed within an area of an integrated circuit component of an integrated circuit. Each of the plurality of digital sensors may include a ring oscillator and may be configured to output a counter value of a ring oscillator counted over a designated period. A sensor network control unit may be provided that is communicatively connected to the plurality of digital sensors via a communication circuit. The sensor network control unit may be configured to receive a plurality of counter values including the counter value from each of the plurality of digital sensors and identify a hotspot within the area of the integrated circuit.
    Type: Application
    Filed: March 21, 2023
    Publication date: July 13, 2023
    Inventors: Bogdan Tutuianu, Osamu Takahashi
  • Patent number: 11616841
    Abstract: A digital sensor network is overlaid on an integrated circuit for identifying and mapping hotspots in the integrated circuit. The digital sensor network may include a plurality of digital sensors distributed within an area of an integrated circuit component of an integrated circuit. Each of the plurality of digital sensors may include a ring oscillator and may be configured to output a counter value of a ring oscillator counted over a designated period. A sensor network control unit may be provided that is communicatively connected to the plurality of digital sensors via a communication circuit. The sensor network control unit may be configured to receive a plurality of counter values including the counter value from each of the plurality of digital sensors and identify a hotspot within the area of the integrated circuit.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: March 28, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Bogdan Tutuianu, Osamu Takahashi
  • Publication number: 20210250405
    Abstract: A digital sensor network is overlaid on an integrated circuit for identifying and mapping hotspots in the integrated circuit. The digital sensor network may include a plurality of digital sensors distributed within an area of an integrated circuit component of an integrated circuit. Each of the plurality of digital sensors may include a ring oscillator and may be configured to output a counter value of a ring oscillator counted over a designated period. A sensor network control unit may be provided that is communicatively connected to the plurality of digital sensors via a communication circuit. The sensor network control unit may be configured to receive a plurality of counter values including the counter value from each of the plurality of digital sensors and identify a hotspot within the area of the integrated circuit.
    Type: Application
    Filed: February 7, 2020
    Publication date: August 12, 2021
    Inventors: Bogdan TUTUIANU, Osamu TAKAHASHI
  • Patent number: 8799842
    Abstract: Systems, methods, and other embodiments associated with analyzing interconnects for global wires of a circuit are described. In one embodiment, for a target wire in a circuit design, a method includes determining an inductance value and a capacitance value for parallel wires to the target wire. The method then calculates a second capacitance value for non-parallel wires to the target wire and calculates an estimated inductance value for the non-parallel wires based on the second capacitance value. A circuit model for the target wire may then be generated using the inductance and capacitance values.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: August 5, 2014
    Assignee: Oracle International Corporation
    Inventors: Bogdan Tutuianu, George J. Chen
  • Publication number: 20140075405
    Abstract: Systems, methods, and other embodiments associated with analyzing interconnects for global wires of a circuit are described. In one embodiment, for a target wire in a circuit design, a method includes determining an inductance value and a capacitance value for parallel wires to the target wire. The method then calculates a second capacitance value for non-parallel wires to the target wire and calculates an estimated inductance value for the non-parallel wires based on the second capacitance value. A circuit model for the target wire may then be generated using the inductance and capacitance values.
    Type: Application
    Filed: September 10, 2012
    Publication date: March 13, 2014
    Applicant: Oracle International Corporation
    Inventors: Bogdan TUTUIANU, George J. CHEN
  • Patent number: 8464195
    Abstract: An integrated circuit clock analysis system receives a cell library of gates of the integrated circuit and generates a macro model for each of the gates, where each macro model includes at least one of a nonlinear current source model, an input parasitics model or a nonlinear capacitors model. The system then tunes the macro models and generates a simulation deck from an electrical netlist of a layout of the integrated circuit and the tuned macro models. The system then performs clock analysis simulation based on the simulation deck.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: June 11, 2013
    Assignee: Oracle International Corporation
    Inventors: Alexander Korobkov, Bogdan Tutuianu, Alexandre Ardelea, Amit Agarwal
  • Patent number: 8078447
    Abstract: A method of estimating a Miller coefficient for an aggressor network and a victim network coupled by a coupling capacitor includes synthesizing a reduced order system from the aggressor network and the victim network, estimating an active area across the coupling capacitor for an aggressor induced noise signal based on the reduced order system, calculating an estimate of the Miller coefficient based on the active area of the aggressor induced noise signal, and outputting the calculated estimate of the Miller coefficient.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: December 13, 2011
    Assignee: Oracle America, Inc.
    Inventors: Bogdan Tutuianu, Iris E. Chen, Jiyang Cheng
  • Publication number: 20090319254
    Abstract: A method of estimating a Miller coefficient for an aggressor network and a victim network coupled by a coupling capacitor includes synthesizing a reduced order system from the aggressor network and the victim network, estimating an active area across the coupling capacitor for an aggressor induced noise signal based on the reduced order system, calculating an estimate of the Miller coefficient based on the active area of the aggressor induced noise signal, and outputting the calculated estimate of the Miller coefficient.
    Type: Application
    Filed: June 18, 2008
    Publication date: December 24, 2009
    Applicant: SUN MICROSYSTEMS, INC.
    Inventors: Bogdan Tutuianu, Iris E. Chen, Jiyang Cheng