Patents by Inventor Clifford Ludwig

Clifford Ludwig 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 for testing smart cards and method for same
    Publication number: 20060276989
    Abstract: A system and method for testing multiple smart card devices in parallel and asynchronously are provided. The system includes a smart card module that may be easily inserted in a digital test system. The smart card module includes multiple smart card instrument channels, each one of which testing a separate smart card device independently and asynchronously from the others. The smart card instrument channels employ a novel modulation technique based on palette waveforms that are formed of transitions between two data bits.
    Type: Application
    Filed: May 19, 2006
    Publication date: December 7, 2006
    Inventors: Clifford Ludwig, Dan Bullard, Michael Ferland, Eric Parker, James St. Jean, David Reynolds