Patents by Inventor Mounir Meghelli, I

Mounir Meghelli, I 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).

  • Calibration of sampling phase and aperature errors in multi-phase sampling systems
    Patent number: 9369263
    Abstract: Method and apparatus to calibrate sampling phases of a multi-phase sampling system. The method includes on-chip generating a pristine phase reference pattern signal for use in generating at least one reference output signal from a data path; sampling, responsive to a clock signal, the at least one reference output signal to obtain samples; and modifying a phase of the clock signal to align the obtained samples to pattern edges of at least one reference output signal. Both symmetric and asymmetric duty cycle distortion are removed from the pristine phase reference pattern signal input to the data path. The effects of asymmetric distortion in the data path output signal upon the phase calibration are cancelled by periodically inverting the at least one reference output signal.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: June 14, 2016
    Assignee: International Business Machines Corporation
    Inventors: Matthew B. Baecher, John F. Bulzacchelli, John F. Ewen, Gautam Gangasani, Mounir Meghelli, I, Matthew J. Paschal, Trushil N. Shah