Patents by Inventor Denis Blavette

Denis Blavette 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).

  • Apparatus for detecting the presence or the absence of a digitally modulated carrier, a corresponding receiver, and a corresponding method
    Patent number: 6081559
    Abstract: The invention relates to apparatus for detecting the presence or the absence of a signal carrier wave received by a receiver. The carrier wave is modulated by a digital signal at a symbol clock frequency. According to the invention, the apparatus includes:a non-linear circuit receiving the received signal or the received signal after it has been frequency transposed, the non-linear circuit supplying in particular a signal whose frequency corresponds to the symbol clock frequency;a narrow-band filter centered on the symbol clock frequency and supplying a filtered signal;detection means for detecting the filtered signal and for supplying a detection signal; andcomparator means for comparing the detection signal with a reference value, the output signal from the comparator means constituting a signal indicating the presence or the absence of the carrier wave.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: June 27, 2000
    Assignee: Alcatel Espace
    Inventors: Gerard Leclerc, Denis Blavette, Didier Lemaitre