Patents by Inventor Frederic M. Davidson

Frederic M. Davidson 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).

  • System and method for frame synchronization
    Patent number: 8259759
    Abstract: A system and method for calculating and applying a metric that is calculated over a binary interval that corresponds in length to a preamble. The value of the metric reflects the likelihood that the interval is the preamble. A lower value for the metric suggests that the interval is more likely to be the preamble. In an embodiment, the metric is calculated beginning at an initial location in the bitstream, and then recalculated beginning at each of several successive locations in the bitstream. This results in a set of calculated metrics. The start of the preamble is considered likely to be the initial location of the interval that corresponds to the metric having the lowest value.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: September 4, 2012
    Assignee: The Johns Hopkins University
    Inventors: A. Roger Hammons, Jr., Frederic M. Davidson
  • System and Method for Frame Synchronization
    Publication number: 20100260208
    Abstract: A system and method for calculating and applying a metric that is calculated over a binary interval that corresponds in length to a preamble. The value of the metric reflects the likelihood that the interval is the preamble. A lower value for the metric suggests that the interval is more likely to be the preamble. In an embodiment, the metric is calculated beginning at an initial location in the bitstream, and then recalculated beginning at each of several successive locations in the bitstream. This results in a set of calculated metrics. The start of the preamble is considered likely to be the initial location of the interval that corresponds to the metric having the lowest value.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 14, 2010
    Inventors: A. Roger Hammons, JR., Frederic M. Davidson