Patents by Inventor Y. W. Sing

Y. W. Sing 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).

  • Floating point unit using combined multiply and ALU functions
    Patent number: 4866652
    Abstract: A method and apparatus for combining the multiply and ALU functions for floating point numbers to enable the completion of a multiply-accumulate operation in a shorter time. The multiplied fraction is left in sum and carry form and is provided in this form to the ALU, eliminating the CP adder from the multiplier. The normalization of the fraction and the corresponding changes to the exponent in the multiplier are also eliminated. The ALU can combine the sum and carry of the product fraction simultaneously if the exponents are sufficiently similar. Otherwise, the sum and carry of the fraction product is combined first and compared with the new fraction, with the smaller of the fractions being right shifted prior to their combination.
    Type: Grant
    Filed: September 1, 1987
    Date of Patent: September 12, 1989
    Assignee: Weitek Corporation
    Inventors: George K. Chu, Jan Fandrianto, Y. W. Sing