Patents by Inventor Andrew Hulbert

Andrew Hulbert 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 method for modifying integrated circuit hold times
    Patent number: 7191416
    Abstract: A method of arranging an integrated circuit to correct for hold time errors comprises fixing the position of existing cells in a design, determining hold time errors required to be corrected and placing buffer cells in spaces in the existing design. By placing buffer cells in spaces in the existing design, rather than moving cells in the existing design, the hold time can be corrected without changing the critical path.
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 13, 2007
    Assignee: STMicroelectronics Limited
    Inventors: Andrew Hulbert, Enrico Gregoratto
  • Integrated circuit design system and method
    Publication number: 20040148583
    Abstract: A method of arranging an integrated circuit to correct for hold time errors comprises fixing the position of existing cells in a design, determining hold time errors required to be corrected and placing buffer cells in spaces in the existing design. By placing buffer cells in spaces in the existing design, rather than moving cells in the existing design, the hold time can be corrected without changing the critical path.
    Type: Application
    Filed: January 27, 2003
    Publication date: July 29, 2004
    Applicant: STMicroelectronics Limited
    Inventors: Andrew Hulbert, Enrico Gregoratto