Patents by Inventor David Widiger

David Widiger 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: 20080072189
    Abstract: An integrated circuit chip has new Frequency dependent RLC extraction and modeling providing on chip integrity and noise verification and the extraction and modeling employs: A) 2D scan line algorithm for the collection of adjacent signal and power conductor coordinates; B) In core pair-wise frequency Dependent RL extraction; C) In core equivalent circuit synthesis; D) caching and partitioning RL extraction techniques for run time efficiency; and E) Techniques for synthesizing stable circuits to represent frequency dependent RL circuits for non-mono tonic R12.
    Type: Application
    Filed: November 19, 2007
    Publication date: March 20, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael Bowen, Alina Deutsch, Gerard Kopcsay, Byron Krauter, Barry Rubin, Howard Smith, David Widiger
  • Publication number: 20070011630
    Abstract: A method for computing a Miller-factor compensated for peak noise is provided. The method includes mapping at least two delays as a function of at least two Miller-factors; determining an equation of the function; computing a peak noise; computing a peak delay resulting from the peak noise; and computing the compensated Miller-factor based on the equation and the peak delay. The function can be either a linear function or a non-linear function.
    Type: Application
    Filed: July 6, 2005
    Publication date: January 11, 2007
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Chandramouli Kashyap, Gregory Schaeffer, David Widiger
  • Publication number: 20060190881
    Abstract: A system and method for estimating propagation noise that is induced by a non-zero noise glitch at the input of the driver circuit. Such propagation noise is a function of both the input noise glitch and the driver output effective capacitive load, which is typically part of the total wiring capacitance due to resistive shielding in deep sub-micron interconnects. The noise-driven effective capacitance solution provided herein also estimates the propagation noise induced by a non-zero noise glitch at the input of the driving gate. Gate propagation noise rules describing a relationship between the output noise properties and the input noise properties and the output loading capacitance are used within the noise-driven effective capacitance process to determine the linear Thevenin model of the driving gate. The linearized Thevenin driver model is then employed to analyze both the propagation noise and the combined coupling and propagation noise typically seen in global signal nets.
    Type: Application
    Filed: February 1, 2005
    Publication date: August 24, 2006
    Inventors: Haihua Su, David Widiger, Ying Liu, Byron Krauter, Chandramouli Kashyap