Patents by Inventor Tom Tewalt

Tom Tewalt 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).

  • Systems and methods for locating a mobile device within a cellular system
    Patent number: 9753115
    Abstract: A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.
    Type: Grant
    Filed: April 16, 2013
    Date of Patent: September 5, 2017
    Assignee: Digimarc Corporation
    Inventors: Geoffrey B. Rhoads, Tom Tewalt, Hugh L. Brunk, Tyler J. McKinley
  • SYSTEMS AND METHODS FOR LOCATING A MOBILE DEVICE WITHIN A CELLULAR SYSTEM
    Publication number: 20140141815
    Abstract: A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.
    Type: Application
    Filed: April 16, 2013
    Publication date: May 22, 2014
    Applicant: Digimarc Corporation
    Inventors: Geoffrey B. Rhoads, Tom Tewalt, Hugh L. Brunk, Tyler J. McKinley
  • Systems and methods for locating a mobile device within a cellular system
    Patent number: 8421675
    Abstract: A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: April 16, 2013
    Assignee: Digimarc Corporation
    Inventors: Geoffrey B. Rhoads, Tom Tewalt, Hugh L. Brunk, Tyler J. McKinley
  • SYSTEMS AND METHODS FOR LOCATING A MOBILE DEVICE WITHIN A CELLULAR SYSTEM
    Publication number: 20090233621
    Abstract: A system for determining location and timing information in a cellular network includes a space-time calibration unit (SCU) and a plurality of nodes in communication with the SCU. Each node includes a node ping driver that receives frame synchronization information from a respective subset of cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local node clock. The system also includes a user handset that includes a handset ping driver that receives the frame synchronization information from a serving cell site and one or more neighbor cell sites, and associates the frame synchronization information with respective receive count stamps generated using a local handset clock. The SCU uses the information from the node and handset ping drivers to determine a handset location.
    Type: Application
    Filed: April 20, 2009
    Publication date: September 17, 2009
    Applicant: ZULUTIME, LLC
    Inventors: Geoffrey B. Rhoads, Tom Tewalt, Hugh L. Brunk, Tyler J. McKinley