Patents by Inventor Carl W. C. Anderson

Carl W. C. Anderson 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).

  • Distribution network comprising coax and optical fiber paths for transmission of television and additional signals
    Patent number: 5499047
    Abstract: A cable television network is supplemented with optical fibers and fiber termination units to communicate additional downstream digital signals and upstream signals. A drop unit for each customer premises is provided in the drop cable. The drop unit demodulates downstream signals and selects for delivery to the customer premises only those downstream signals addressed to the customer premises, modulating the selected signals using binary phase shift keying (BPSK) which provides relative immunity to noise for forwarding the signals to the customer premises. Upstream BPSK signals from the customer premises are demodulated and remodulated in the drop unit to isolate the customer premises wiring from the rest of the network.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: March 12, 1996
    Assignee: Northern Telecom Limited
    Inventors: John B. Terry, Alastair A. Warwick, Carl W. C. Anderson