Patents by Inventor Dmitry Nadezhin

Dmitry Nadezhin 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).

  • Methods for constructing lookup tables for division and square-root implementations
    Patent number: 10423389
    Abstract: Control circuitry coupled to a multiply unit which includes a plurality of stage, each of which may be configured to perform a corresponding arithmetic function, may be configured to retrieve a given entry from a lookup table dependent upon a first portion of a binary representation of an input operand. An error value of an error function evaluated dependent upon a lookup value in a given entry of the plurality of entries is included in a predetermined error range. The control circuitry may be further configured to determine an initial approximation of a result of an iterative arithmetic operation using the first entry and initiate the iterative arithmetic operation using the initial approximation and the input operand.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: September 24, 2019
    Assignee: Oracle International Corporation
    Inventors: Josephus Ebergen, Dmitry Nadezhin, Christopher Olson
  • METHODS FOR CONSTRUCTING LOOKUP TABLES FOR DIVISION AND SQUARE-ROOT IMPLEMENTATIONS
    Publication number: 20180018146
    Abstract: Control circuitry coupled to a multiply unit which includes a plurality of stage, each of which may be configured to perform a corresponding arithmetic function, may be configured to retrieve a given entry from a lookup table dependent upon a first portion of a binary representation of an input operand. An error value of an error function evaluated dependent upon a lookup value in a given entry of the plurality of entries is included in a predetermined error range. The control circuitry may be further configured to determine an initial approximation of a result of an iterative arithmetic operation using the first entry and initiate the iterative arithmetic operation using the initial approximation and the input operand.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 18, 2018
    Inventors: Josephus Ebergen, Dmitry Nadezhin, Christopher Olson