Patents by Inventor Kenya Katoh

Kenya Katoh 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).

  • Arithmetic unit and method thereof
    Patent number: 6988120
    Abstract: A squaring multiplier for a floating-point number comprises: a pseudo carry generator for generating pseudo information concerning a carry equivalent to predetermined bits for the calculation of a target variable; an MSB look ahead circuit for employing the variable to perform a look ahead operation and establish the location of the MSB (Most Significant Bit) in the calculation results; and combinational circuits for performing the rounding off process and the calculation of the variables by using information concerning a carry, which is generated by the pseudo carry generator and based on the location of the MSB determined by the MSB look ahead circuit.
    Type: Grant
    Filed: June 4, 2002
    Date of Patent: January 17, 2006
    Assignee: International Business Machines Corporation
    Inventors: Yoshinao Kobayashi, Ken Namura, Kenya Katoh
  • Arithmetic unit and method thereof
    Publication number: 20030126177
    Abstract: A squaring multiplier for a floating-point number comprises: a pseudo carry generator for generating pseudo information concerning a carry equivalent to predetermined bits for the calculation of a target variable; an MSB look ahead circuit for employing the variable to perform a look ahead operation and establish the location of the MSB (Most Significant Bit) in the calculation results; and combinational circuits for performing the rounding off process and the calculation of the variables by using information concerning a carry, which is generated by the pseudo carry generator and based on the location of the MSB determined by the MSB look ahead circuit.
    Type: Application
    Filed: June 4, 2002
    Publication date: July 3, 2003
    Applicant: International Business Machines Corporation
    Inventors: Yoshinao Kobayashi, Ken Namura, Kenya Katoh