Patents by Inventor Dan Rivaud

Dan Rivaud 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).

  • System and method for synchronizing sample rates of voiceband channels and a DSL interface channel
    Patent number: 7221703
    Abstract: A system is provided for synchronizing a PSTN clock and a DSL clock. The system comprises a PSTN interface for transmitting and receiving voiceband samples, a data DSL transceiver for modulating and demodulating data to and from DSL samples, a synchronization circuit for synchronizing the voiceband samples and the data samples, and a converter for converting the synchronized voiceband and DSL samples between analog and digital formats. The synchronization circuit synchronizes the voiceband and the data samples for conversion by the same converter.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: May 22, 2007
    Assignee: Ciena Corporation
    Inventors: Fred Stacey, Dan Rivaud, Scott McClennon
  • System and method for synchronizing sample rates of voiceband channels and a DSL interface channel
    Publication number: 20020003871
    Abstract: A system is provided for synchronizing a PSTN clock and a DSL clock. The system comprises a PSTN interface for transmitting and receiving voiceband samples, a data DSL transceiver for modulating and demodulating data to and from DSL samples, a synchronization circuit for synchronizing the voiceband samples and the data samples, and a converter for converting the synchronized voiceband and DSL samples between analog and digital formats. The synchronization circuit synchronizes the voiceband and the data samples for conversion by the same converter.
    Type: Application
    Filed: March 26, 2001
    Publication date: January 10, 2002
    Inventors: Fred Stacey, Dan Rivaud, Scott McClennon