Patents by Inventor Pieter J. Woeltgens

Pieter J. Woeltgens 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).

  • Physical design system and method
    Patent number: 8473885
    Abstract: A design system for designing complex integrated circuits (ICs), a method of IC design and program product therefor. A layout unit receives a circuit description representing portions in a grid and glyph format. A checking unit checks grid and glyph portions of the design. An elaboration unit generates a target layout from the checked design. A data prep unit prepares the target layout for mask making. A pattern caching unit selectively replaces portions of the design with previously cached results for improved design efficiency.
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: June 25, 2013
    Assignee: International Business Machines Corporation
    Inventors: John M. Cohn, James A. Culp, Ulrich A. Finkler, Fook-Luen Heng, Mark A. Lavin, Jin Fuw Lee, Lars W. Liebmann, Gregory A. Northrop, Nakgeuon Seong, Rama N. Singh, Leon Stok, Pieter J. Woeltgens
  • Physical design system and method
    Patent number: 8219943
    Abstract: A design system for designing complex integrated circuits (ICs), a method of IC design and program product therefor. A layout unit receives a circuit description representing portions in a grid and glyph format. A checking unit checks grid and glyph portions of the design. An elaboration unit generates a target layout from the checked design. A data prep unit prepares the target layout for mask making. A pattern caching unit selectively replaces portions of the design with previously cached results for improved design efficiency.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: July 10, 2012
    Assignee: International Business Machines Corporation
    Inventors: John M Cohn, James A. Culp, Ulrich A. Finkler, Fook-Luen Heng, Mark A. Lavin, Jin Fuw Lee, Lars W. Liebmann, Gregory A. Northrop, Nakgeuon Seong, Rama N. Singh, Leon Stok, Pieter J. Woeltgens
  • Independent migration of hierarchical designs with methods of finding and fixing opens during migration
    Patent number: 7568173
    Abstract: Methods of independently migrating a hierarchical design are disclosed. A method for migrating a macro in an integrated circuit comprises: determining an interface strategy between a base cell in the macro and the macro, the base cell including an interface element involved in the interface strategy; migrating the base cell independently with respect to the macro based on the interface strategy; initially scaling the macro; swapping the migrated base cell into the macro; and legalizing content of the initially scaled macro.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: July 28, 2009
    Assignee: International Business Machines Corporation
    Inventors: Veit Gernhoefer, Matthew T. Guzowski, Jason D. Hibbeler, Kevin W. McCullen, Rani Narayan, Stephen L. Runyon, Leon J. Sigal, Robert F. Walker, Pieter J. Woeltgens, Xiaoyun K. Wu, Xin Yuan
  • INDEPENDENT MIGRATION OF HIERARCHICAL DESIGNS WITH METHODS OF FINDING AND FIXING OPENS DURING MIGRATION
    Publication number: 20080313581
    Abstract: Methods of independently migrating a hierarchical design are disclosed. A method for migrating a macro in an integrated circuit comprises: determining an interface strategy between a base cell in the macro and the macro, the base cell including an interface element involved in the interface strategy; migrating the base cell independently with respect to the macro based on the interface strategy; initially scaling the macro; swapping the migrated base cell into the macro; and legalizing content of the initially scaled macro.
    Type: Application
    Filed: June 14, 2007
    Publication date: December 18, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Veit Gernhoefer, Matthew T. Guzowski, Jason D. Hibbeler, Kevin W. McCullen, Rani Narayan, Stephen L. Runyon, Leon J. Sigal, Robert F. Walker, Pieter J. Woeltgens, Xiaoyun K. Wu, Xin Yuan