Patents by Inventor Robert Riggsby

Robert Riggsby 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).

  • Publication number: 20070189780
    Abstract: A fiber-to-the-home (FTTH) system transmits forward and reverse optical signals, such as video, voice, and data signals, via optical fiber, and includes a plurality of home network units. The home network units include an optical receiver for receiving at least one of the video, voice, and data signals. Included is a plurality of gain stages that are distributed throughout the optical receiver. The gain stages include a preamplifier stage, two interstage amplifiers, and a postamplifier stage. Two gain control circuits automatically adjust the gain of the video signal based upon the input power level to the FTTH optical receiver. Additionally, a tilt network performs level compensation for externally located coaxial cable. A signal is then provided to a device located within a home via the coaxial cable at the proper RF level having low noise signals.
    Type: Application
    Filed: February 15, 2006
    Publication date: August 16, 2007
    Applicant: SCIENTIFIC-ATLANTA, INC.
    Inventor: Robert Riggsby
  • Publication number: 20060281370
    Abstract: An internal seizure assembly for providing connectivity with a conductor of a stinger without having access to the seizure assembly itself from the exterior. The seizure assembly includes a seizure lock nut for securing the seizure assembly within an opening within the interior of a housing. A seizure holder for receives a plunger therethrough and the plunger urges the conductor of the stinger into electrical contact with the seizure lock nut. In one embodiment, the plunger has an end keyed to the bottom of the opening in the housing to prevent the plunger from turning.
    Type: Application
    Filed: December 19, 2005
    Publication date: December 14, 2006
    Inventors: William Mahoney, Robert Riggsby
  • Publication number: 20050231288
    Abstract: A device includes a differential equalizer that is suitable for use between an amplification chain. Additionally, the differential equalizer is suitable for use coupled before or after an amplification chain in a transmitter or a receiver. The device comprises a differential equalizer for equalizing an input signal. The differential equalizer can be packaged into an integrated circuit for greater performance figures.
    Type: Application
    Filed: April 16, 2004
    Publication date: October 20, 2005
    Inventors: Robert Riggsby, Walid Kamali
  • Publication number: 20050232346
    Abstract: A device includes an equalizer and an amplification chain in a transmitter or a receiver. The device comprises an equalizer for equalizing an input signal. The equalizer is positioned between two amplifier stages, which amplify the signal. The positioning of the equalizer greatly improves the noise figure and the distortion figures on the output signal. The device can be packaged into an integrated circuit for greater performance figures.
    Type: Application
    Filed: April 16, 2004
    Publication date: October 20, 2005
    Inventors: Robert Riggsby, Walid Kamali