Patents by Inventor Ricardo Augusto de Luz Reis

Ricardo Augusto de Luz Reis 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).

  • Methods and apparatus for providing flexible timing-driven routing trees
    Patent number: 8095904
    Abstract: A method of producing a flexible timing-driven routing tree is provided. Two or more target nodes are sorted in accordance with data criticality. A source-sink grid is built from one or more source nodes and the two or more target nodes. An initial routing tree is built comprising the one or more source nodes. A routing tree generation algorithm is executed on the initial routing tree, utilizing the sorted two or more target nodes and the source-sink grid in accordance with a user-defined timing factor to construct a flexible timing-driven routing tree. The user-defined timing factor specifies an extent of isolation for a routing path from a given one of the one or more source nodes to a given one of the two or more target nodes.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: January 10, 2012
    Assignee: International Business Machines Corporation
    Inventors: Renato Fernandes Hentschke, Marcelo de Oliveira Johann, Jagannathan Narasimhan, Ricardo Augusto de Luz Reis
  • Methods and apparatus for providing flexible timing-driven routing trees
    Patent number: 7571411
    Abstract: A method of producing a flexible timing-driven routing tree is provided. Two or more target nodes are sorted in accordance with data criticality. A source-sink grid is built from one or more source nodes and the two or more target nodes. An initial routing tree is built comprising the one or more source nodes. A routing tree generation algorithm is executed on the initial routing tree, utilizing the sorted two or more target nodes and the source-sink grid in accordance with a user-defined timing factor to construct a flexible timing-driven routing tree. The user-defined timing factor specifies an extent of isolation for a routing path from a given one of the one or more source nodes to a given one of the two or more target nodes.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: August 4, 2009
    Assignee: International Business Machines Corporation
    Inventors: Renato Fernandes Hentschke, Marcelo de Oliveira Johann, Jagannathan Narasimhan, Ricardo Augusto de Luz Reis
  • Methods and Apparatus for Providing Flexible Timing-Driven Routing Trees
    Publication number: 20080170514
    Abstract: A method of producing a flexible timing-driven routing tree is provided. Two or more target nodes are sorted in accordance with data criticality. A source-sink grid is built from one or more source nodes and the two or more target nodes. An initial routing tree is built comprising the one or more source nodes. A routing tree generation algorithm is executed on the initial routing tree, utilizing the sorted two or more target nodes and the source-sink grid in accordance with a user-defined timing factor to construct a flexible timing-driven routing tree. The user-defined timing factor specifies an extent of isolation for a routing path from a given one of the one or more source nodes to a given one of the two or more target nodes.
    Type: Application
    Filed: March 26, 2008
    Publication date: July 17, 2008
    Applicant: International Business Machines Corporation
    Inventors: Renato Fernandes Hentschke, Marcelo De Oliveira Johann, Jagannathan Narasimhan, Ricardo Augusto De Luz Reis