Patents by Inventor Sivannarayana Nagireddi

Sivannarayana Nagireddi 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).

  • Method and apparatus for a multi-tone modem
    Patent number: 8223859
    Abstract: A multi-tone modem with shared and discrete components forming a transmit path and a receive path configured to couple to a wired communication medium to communicate at least one multi-tone modulated communication channel thereon. The modem includes a multi-tone modulator component and a configurable frequency up converter component. The multi-tone modulator component is configured for multi-tone modulation and demodulation of a transmitted and received communication channel at a base band frequency range. The configurable frequency up converter component is coupled to the multi-tone modulator to selectably up convert the frequency range of the transmitted base band signal from the multi-tone modulator to that of a selected communication band and down convert received signals from the selected communication band to the base band for demodulation by the multi-tone modulator.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: July 17, 2012
    Assignee: Ikanos Communications, Inc.
    Inventors: Sam Heidari, Sivannarayana Nagireddi, Sigurd Schelstraete, Avadhani Shridhar
  • Method and apparatus for a multi-tone modem
    Publication number: 20100002755
    Abstract: A multi-tone modem with shared and discrete components forming a transmit path and a receive path configured to couple to a wired communication medium to communicate at least one multi-tone modulated communication channel thereon. The modem includes a multi-tone modulator component and a configurable frequency up converter component. The multi-tone modulator component is configured for multi-tone modulation and demodulation of a transmitted and received communication channel at a base band frequency range. The configurable frequency up converter component is coupled to the multi-tone modulator to selectably up convert the frequency range of the transmitted base band signal from the multi-tone modulator to that of a selected communication band and down convert received signals from the selected communication band to the base band for demodulation by the multi-tone modulator.
    Type: Application
    Filed: June 25, 2009
    Publication date: January 7, 2010
    Applicant: IKANOS Communication, Inc.
    Inventors: Sam Heidari, Sivannarayana Nagireddi, Sigurd Schelstraete, Avadhani Shridhar