Patents by Inventor Roger D. Steen

Roger D. Steen 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 for transmitting multiple signals across a single fiber optic channel
    Patent number: 5426527
    Abstract: The present invention is a system for the transmission of a plurality of analog video, analog audio, and discrete signals across a single fiber optic cable. The system includes a transmitter which first digitizes the analog video and audio signals and then converts a combination of the digital video, digital audio, and discrete signals into a single serial digital data stream. The system modulates this digital data stream into a corresponding lightwave signal and transmits the lightwave signal across the fiber optic cable. A receiver within the system demodulates the lightwave signal into a serial digital data stream, which is then converted into a parallel signal so that the receiver may restore the analog video, analog audio, and discrete signals from the parallel combination of signals.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: June 20, 1995
    Assignee: Alliant Techsystems Inc.
    Inventors: Roger D. Steen, Donald G. Krantz