Patents by Inventor Paul Gerard Villarubia

Paul Gerard Villarubia 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).

  • System and computer program product for diffusion based cell placement migration
    Patent number: 8112732
    Abstract: A system and computer program product for cell placement in an integrated circuit design that uses a calculated diffusion velocity determined from a density value in order to relocate the cells until the cell placement reduces the density below a predetermined threshold. The method acts to control the movement of different cells to reduce the density of the cells prior to legalization of the cell placement.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: February 7, 2012
    Assignee: International Business Machines Corporation
    Inventors: Charles J Alpert, Haoxing Ren, Paul Gerard Villarubia
  • Method for diffusion based cell placement migration
    Patent number: 8091059
    Abstract: A method for cell placement in an integrated circuit design that uses a calculated diffusion velocity determined from a density value in order to relocate the cells until the cell placement reduces the density below a predetermined threshold. The method acts to control the movement of different cells to reduce the density of the cells prior to legalization of the cell placement.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: January 3, 2012
    Assignee: International Business Machines Corporation
    Inventors: Charles J Alpert, Haxoing Ren, Paul Gerard Villarubia
  • METHOD FOR DIFFUSION BASED CELL PLACEMENT MIGRATION
    Publication number: 20090064073
    Abstract: A method for cell placement in an integrated circuit design that uses a calculated diffusion velocity determined from a density value in order to relocate the cells until the cell placement reduces the density below a predetermined threshold. The method acts to control the movement of different cells to reduce the density of the cells prior to legalization of the cell placement.
    Type: Application
    Filed: November 4, 2008
    Publication date: March 5, 2009
    Applicant: International Business Machines Corporation
    Inventors: Charles Jay Alpert, Haoxing Ren, Paul Gerard Villarubia