Patents by Inventor Tom Lofgren

Tom Lofgren 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).

  • Optimization of control transfers to dynamically loaded modules
    Patent number: 6934943
    Abstract: Method and apparatus for optimization of an executable program that calls procedures in a shared library. Code segments that read procedure address information from a linkage table are first identified. Each linkage code segment is associated with a call to a procedure in the shared library, and the address information in the linkage table is associated with the procedures in the shared library. During program execution, the address information is read from the linkage table and substitute code segments are generated for the linkage code segments. Each substitute code segment has direct loads of the address information for calling the associated procedure instead of the original references to the linkage table. Thereafter, the substitute code segments are executed instead of the linkage code segments.
    Type: Grant
    Filed: October 18, 2001
    Date of Patent: August 23, 2005
    Assignee: Hewlett-Packard Development Company
    Inventors: Robert Hundt, Tom Lofgren, Vinodha Ramasamy
  • Optimization of control transfers to dynamically loaded modules
    Publication number: 20030079215
    Abstract: Method and apparatus for optimization of an executable program that calls procedures in a shared library. Code segments that read procedure address information from a linkage table are first identified. Each linkage code segment is associated with a call to a procedure in the shared library, and the address information in the linkage table is associated with the procedures in the shared library. During program execution, the address information is read from the linkage table and substitute code segments are generated for the linkage code segments. Each substitute code segment has direct loads of the address information for calling the associated procedure instead of the original references to the linkage table. Thereafter, the substitute code segments are executed instead of the linkage code segments.
    Type: Application
    Filed: October 18, 2001
    Publication date: April 24, 2003
    Inventors: Robert Hundt, Tom Lofgren, Vinodha Ramasamy