Patents by Inventor Karl Schabas

Karl Schabas 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).

  • Method and apparatus for performing compound duplication of components on field programmable gate arrays
    Patent number: 7401314
    Abstract: A method for designing a system on a target device utilizing field programmable gate arrays (FPGAs) includes duplicating a plurality of components in response to slack values associated with connections to the components in placement locations.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: July 15, 2008
    Assignee: Altera Corporation
    Inventors: Karl Schabas, Stephen Brown, Deshanand Singh, Terry Borer, Shawn Malhotra
  • Method and apparatus for performing retiming on field programmable gate arrays
    Patent number: 7360190
    Abstract: A method for designing a system on a target device utilizing field programmable gate arrays (FPGAs) includes identifying registers on near-critical paths. The registers are moved to shorten lengths of one or more near-critical paths.
    Type: Grant
    Filed: June 25, 2004
    Date of Patent: April 15, 2008
    Assignee: Altera Corporation
    Inventors: Deshanand Singh, Gabriel Quan, Terry Borer, Ian Chesal, Valavan Manohararajah, Karl Schabas, Stephen Brown
  • Method and apparatus for performing post-placement functional decomposition for field programmable gate arrays
    Patent number: 7290239
    Abstract: A method for designing a system on a target device utilizing field programmable gate arrays (FPGAs) includes synthesizing a design for the system. Components in the design are mapped onto resources on the target device. Placement locations are determined for the components on the target device. The design for the system is restructured after placement locations for the components are determined to improve timing for the system.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: October 30, 2007
    Assignee: Altera Corporation
    Inventors: Deshanand Singh, Valavan Manohararajah, Karl Schabas
  • Method and apparatus for performing logic replication in field programmable gate arrays
    Patent number: 7257800
    Abstract: A method for designing a system on a target device utilizing field programmable gate arrays is disclosed. A design is synthesized for the system. Components in the design are mapped onto resources on the target device. Placement locations are determined for the components on the target device. Components to replicate are identified in response to criticality determined from the placement locations.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: August 14, 2007
    Assignee: Altera Corporation
    Inventors: Deshanand Singh, Gabriel Quan, Terry Borer, Valavan Manohararajah, Paul McHardy, Ivan Hamer, Karl Schabas, Kevin Chan