Patents by Inventor Howard Jerald Keller

Howard Jerald Keller 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 of diagnosing faults in an emulated computer system via a heterogeneous diagnostic program
    Patent number: 6141635
    Abstract: An emulated computer system includes an instruction processor which directly executes a set of native instructions. Stored in a memory, which is coupled to the instruction processor, are a plurality of foreign user programs and a foreign operating system, each of which is a compilation of foreign instructions and data. Also stored in the memory is an emulator program which is a compilation of the native instructions that interprets the foreign instructions, and a native operating system which is a compilation of the native instructions under which the emulator program is run. To diagnose faults in this emulated computer system, a heterogeneous diagnostic program is provided in the memory, which is a compilation of the native instructions that reads the foreign user programs and foreign operating system from the memory and stores them in a reformatted form on a magnetic media.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Unisys Corporation
    Inventors: Derek William Paul, Grace Jui-Yen Lin, Howard Jerald Keller