Patents by Inventor David Aha

David Aha 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).

  • System and method providing an arrangement for efficiently emulating an operating system call
    Patent number: 6530017
    Abstract: An operating system call control subsystem is disclosed for use in a computer that includes a processor for processing a program, the program instructions of an operating system call instruction type identifying one of a plurality of types of operating system calls, each type of operating system call being associable with an operating system call type identifier value within a predetermined range of values. The operating system call control subsystem comprises a crossover table, an operating system call instruction type address resolution module, and an operating system call instruction type processing module. The crossover table has a number of entries corresponding to a predetermined fraction of the predetermined range, each entry in the crossover table having an instruction for enabling the processor to save a value corresponding to an offset of the entry into the crossover table.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: March 4, 2003
    Assignee: Sun Microsystems, Inc.
    Inventors: David Dice, Sunil Sreenivasan, David Aha