Patents by Inventor Allan Tzungren Tzeng

Allan Tzungren Tzeng 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).

  • Elimination of end-around-carry critical path in floating point add/subtract execution unit
    Patent number: 7054898
    Abstract: A processor having a floating point execution unit with improved parallelism in the adder (add/subtract) unit is disclosed. A preferred aspect of the invention is a new use of the compare logic in the floating point execution unit, coupled with an end-around-carry bit value calculator, to allow the correct rounding choice of the operands to be made before the mantissa portions of the operands are subtracted (added) rather than after.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: May 30, 2006
    Assignee: Sun Microsystems, Inc.
    Inventors: Allan Tzungren Tzeng, Choon Ping Chng