Patents by Inventor Thomas Van Baak

Thomas Van Baak 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).

  • Loader conditionally replacing a code sequence with a functionally-alike code sequence in an executable program intended for execution in different run-time environments
    Patent number: 6115550
    Abstract: A compiler-loader system enables the creation of different loaded executable images in target computers complying with different versions of an instruction-set architecture, the different images being created from a single executable program on secondary storage. The compiler generates an executable program containing a routine executable on both versions of the target computers, and also containing an architecture entry with (i) an address of the program location from which the routine is called, (ii) an instruction executable on only one version of the target computers that performs the same function as the routine but with superior performance, and (iii) a value indicating which version of the target machines the instruction can be executed on. The loader determines whether the target machine can execute the instruction, and if so replaces the subroutine call appearing at the address in the architecture entry with the instruction appearing in the architecture entry.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: September 5, 2000
    Assignee: Digital Equipment Corporation
    Inventors: David P. Hunter, William K. Colgate, Richard L. Sites, Thomas Van Baak
  • Compiler generating functionally-alike code sequences in an executable program intended for execution in different run-time environments
    Patent number: 5920721
    Abstract: A compiler-loader system enables the creation of different loaded executable images in target computers complying with different versions of an instruction-set architecture, the different images being created from a single executable program on secondary storage. The compiler generates an executable program containing a routine executable on both versions of the target computers, and also containing an architecture entry with (i) an address of the program location from which the routine is called, (ii) an instruction executable on only one version of the target computers that performs the same function as the routine but with superior performance, and (iii) a value indicating which version of the target machines the instruction can be executed on. The loader determines whether the target machine can execute the instruction, and if so replaces the subroutine call appearing at the address in the architecture entry with the instruction appearing in the architecture entry.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: July 6, 1999
    Assignee: Digital Equipment Corporation
    Inventors: David P. Hunter, William K. Colgate, Richard L. Sites, Thomas Van Baak