Patents by Inventor Sharad N. Vittal

Sharad N. Vittal 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 apparatus for using DFE in a system with non-continuous data
    Patent number: 8553754
    Abstract: A decision feedback equalization (DFE) receiver and method are provided. The DFE receiver is configured to sample data bits from a data bus. The DFE receiver includes a data sampler configured to sample a current data bit from the data bus using one of a first, second and third voltage reference. The DFE receiver also includes multiplexing logic configured to select one of the first, second and third voltage references based on a prior data bus level. The wherein the first voltage reference is selected if the prior data bus level was a logic zero. The second voltage reference is selected if the prior data bus level was a logic one. The third voltage reference is selected if the prior data bus level was tri-state.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: October 8, 2013
    Assignee: Advanced Micro Devices, Inc.
    Inventors: Ramon Mangaser, Shefali Walia, Edoardo Prete, Jonathan P. Dowling, Gerald R. Talbot, Sharad N. Vittal
  • METHOD AND APPARATUS FOR USING DFE IN A SYSTEM WITH NON-CONTINUOUS DATA
    Publication number: 20120155529
    Abstract: A decision feedback equalization (DFE) receiver and method are provided. The DFE receiver is configured to sample data bits from a data bus. The DFE receiver includes a data sampler configured to sample a current data bit from the data bus using one of a first, second and third voltage reference. The DFE receiver also includes multiplexing logic configured to select one of the first, second and third voltage references based on a prior data bus level. The wherein the first voltage reference is selected if the prior data bus level was a logic zero. The second voltage reference is selected if the prior data bus level was a logic one. The third voltage reference is selected if the prior data bus level was tri-state.
    Type: Application
    Filed: December 20, 2010
    Publication date: June 21, 2012
    Applicant: ADVANCED MICRO DEVICES, INC.
    Inventors: Ramon Mangaser, Shefali Walia, Edoardo Prete, Jonathan P. Dowling, Gerald R. Talbot, Sharad N. Vittal