Patents by Inventor David Richard Gervais

David Richard Gervais 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).

  • Rate Adjustable Differential Phase Shift Key (DPSK) Modulation
    Publication number: 20110008057
    Abstract: In a fixed delay optical communication system, rate adjustable differential phase shift key (DPSK) techniques eliminate the need for multiple comparing modules, each corresponding to a different data rate. Setting alternative data rates at integer multiples of the fundamental data rate of the optical communication system allows the system to process the respective integer number of symbols per period of the system, wherein the period of the system is the inverse of the fundamental data rate. Pulse carving techniques may be used to set the duty cycle of clock levels associated with a clock signal. The clock levels may be combined with respective symbols to provide optical symbols having a duty cycle less than 100%.
    Type: Application
    Filed: September 10, 2010
    Publication date: January 13, 2011
    Applicant: The Mitre Corporation
    Inventors: David Richard GERVAIS, Jeffrey Roland MINCH, Daniel Jacob TOWNSEND
  • Rate adjustable differential phase shift key (DPSK) modulation
    Patent number: 7817924
    Abstract: In a fixed delay optical communication system, rate adjustable differential phase shift key (DPSK) techniques eliminate the need for multiple comparing modules, each corresponding to a different data rate. Setting alternative data rates at integer multiples of the fundamental data rate of the optical communication system allows the system to process the respective integer number of symbols per period of the system, wherein the period of the system is the inverse of the fundamental data rate. Pulse carving techniques may be used to set the duty cycle of clock levels associated with a clock signal. The clock levels may be combined with respective symbols to provide optical symbols having a duty cycle less than 100%.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: October 19, 2010
    Assignee: The Mitre Corporation
    Inventors: David Richard Gervais, Jeffrey Roland Minch, Daniel Jacob Townsend