Patents by Inventor Damian Cowell

Damian Cowell 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).

  • Optical vestigial sideband (VSB) transmission
    Publication number: 20030058509
    Abstract: A VSB generation control system is provided that uses received signal quality (detected error rate) as a measure of correct VSB filter or signal wavelength adjustment. The use of VSB will offer spectral efficiency improvements for optical transmission and the margins gained may be used either to increase span length or reduce wavelength spacing. The control loops proposed offer minimal complexity and implementation whilst providing reliable and understandable performance improvement.
    Type: Application
    Filed: September 24, 2001
    Publication date: March 27, 2003
    Applicant: Ditech Communications Corporation
    Inventors: Steve Webb, Damian Cowell