Patents by Inventor William C. Pearson

William C. Pearson 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 and system for efficiently multiplying signed and unsigned variable width operands
    Patent number: 5764558
    Abstract: A plurality of multipliers for multiplying numbers having B number of bits are provided for multiplying A-operands having B number of bits by a B-operand having B number of bits. Pairs of A- and B-operands are loaded into each multiplier. Each of the multipliers calculates an intermediate result by internally adding B number of partial products. In response to the data processing system being operated in a signed mode, selected bits in selected partial products in selected multipliers are complemented, and 2.sup.B is added to a selected intermediate result so that when the intermediate results are appropriately weighted and added together, a result that is the product of two operands having 2B-bits may be calculated. In another mode, multiple products having B-bits are calculated from the pairs of A- and B-operands. The A- and B-operands may be either signed or unsigned.
    Type: Grant
    Filed: August 25, 1995
    Date of Patent: June 9, 1998
    Assignee: International Business Machines Corporation
    Inventors: William C. Pearson, Clarence R. Ogilvie
  • Neural network interpretation of aeromagnetic data
    Patent number: 5355313
    Abstract: A method for determining depth to basement from aeromagnetic data utilizes neural networks to automate the laborious process of profile interpretation. The neural networks provide consistency, accuracy and overall quality without bias of interpretation.
    Type: Grant
    Filed: October 25, 1991
    Date of Patent: October 11, 1994
    Assignee: Texaco Inc.
    Inventors: Robert F. Moll, William C. Pearson, John R. Rogers, Jacky M. Wiener