Patents by Inventor David John Tyler

David John Tyler 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).

  • Demodulation of phase modulated fibre-optic sensor system signals
    Patent number: 8023829
    Abstract: Demodulation apparatus for demodulating phase-modulated signals comprises a quadrature signal generator (QSG) for generating in-phase (I) and quadrature-phase (Q) signals in response to an unmodulated input signal. The QSG provides fast frequency tracking of the input signal and excludes any high-frequency content the input signal.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: September 20, 2011
    Assignee: Qinetiq Limited
    Inventors: Philip John Nash, David John Tyler, Nicholas Middleton
  • Demodulation of Phase Modulated Fibre-Optic Sensor System Signals
    Publication number: 20090220244
    Abstract: Demodulation apparatus for demodulating phase-modulated signals comprises a quadrature signal generator (QSG) for generating in-phase (I) and quadrature-phase (Q) signals in response to an unmodulated input signal. The QSG provides fast frequency tracking of the input signal and excludes any high-frequency content the input signal.
    Type: Application
    Filed: August 17, 2006
    Publication date: September 3, 2009
    Inventors: Philip John Nash, David John Tyler, Nicholas Middleton