Patents by Inventor Michael D. Massa

Michael D. Massa 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).

  • Precision resampling system
    Patent number: 6778621
    Abstract: A system for changing the sample rate of a digital signal precisely such that frequency coherence is maintained. The system uses coupled direct digital synthesizers to establish the phase of a resampled clock compared to the original clock. The system implements precision resampling that changes the sample rate of a sampled data signal, while maintaining the frequency coherence of the sampled signal. A precision phase calculation for the relation between an input clock and an output clock enables the precision resampling.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: August 17, 2004
    Assignee: Lockheed Martin Corporation
    Inventors: Dennis L. Wilson, Michael D. Massa