Patents by Inventor Jon Hamkins

Jon Hamkins 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 of error floor mitigation in low-density parity-check codes
    Patent number: 8656245
    Abstract: A digital communication decoding method for low-density parity-check coded messages. The decoding method decodes the low-density parity-check coded messages within a bipartite graph having check nodes and variable nodes. Messages from check nodes are partially hard limited, so that every message which would otherwise have a magnitude at or above a certain level is re-assigned to a maximum magnitude.
    Type: Grant
    Filed: April 9, 2012
    Date of Patent: February 18, 2014
    Assignee: California Institute of Technology
    Inventor: Jon Hamkins
  • Self-configurable radio receiver system and method for use with signals without prior knowledge of signal defining characteristics
    Patent number: 8358723
    Abstract: A method, radio receiver, and system to autonomously receive and decode a plurality of signals having a variety of signal types without a priori knowledge of the defining characteristics of the signals is disclosed. The radio receiver is capable of receiving a signal of an unknown signal type and, by estimating one or more defining characteristics of the signal, determine the type of signal. The estimated defining characteristic(s) is/are utilized to enable the receiver to determine other defining characteristics. This in turn, enables the receiver, through multiple iterations, to make a maximum-likelihood (ML) estimate for each of the defining characteristics. After the type of signal is determined by its defining characteristics, the receiver selects an appropriate decoder from a plurality of decoders to decode the signal.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: January 22, 2013
    Assignee: The United States of America as Represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Jon Hamkins, Marvin K. Simon, Dariush Divsalar, Samuel J. Dolinar, Andre Tkacenko
  • METHOD OF ERROR FLOOR MITIGATION IN LOW-DENSITY PARITY-CHECK CODES
    Publication number: 20120266040
    Abstract: A digital communication decoding method for low-density parity-check coded messages. The decoding method decodes the low-density parity-check coded messages within a bipartite graph having check nodes and variable nodes. Messages from check nodes are partially hard limited, so that every message which would otherwise have a magnitude at or above a certain level is re-assigned to a maximum magnitude.
    Type: Application
    Filed: April 9, 2012
    Publication date: October 18, 2012
    Inventor: Jon HAMKINS