Patents by Inventor Tiffany S. Furuya

Tiffany S. Furuya 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).

  • Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
    Patent number: 7426243
    Abstract: Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal, a processor for decoding the layered in-phase signal and the layered quadrature signal to produce a single layer in-phase signal and a single layer quadrature signal, a digital-to-analog encoder for converting the single layer in-phase signal and the single layer quadrature signal to a single layer in-phase analog signal and a single layer quadrature analog signal and a modulator for modulating the single layer in-phase analog signal and the single layer quadrature analog signal to produce a single layer signal.
    Type: Grant
    Filed: January 2, 2007
    Date of Patent: September 16, 2008
    Assignee: The DIRECTV Group, Inc.
    Inventors: Ernest C. Chen, Tiffany S. Furuya, Philip R. Hilmes, Joseph Santoru
  • Dual layer signal processing in a layered modulation digital signal system
    Patent number: 7426246
    Abstract: Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal and a processor for decoding the layered in-phase signal and the layered quadrature signal to produce one or more discrete layer signals.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: September 16, 2008
    Assignee: The DIRECTV Group, Inc.
    Inventors: Ernest C. Chen, Tiffany S. Furuya, Philip R. Hilmes, Joseph Santoru
  • Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
    Patent number: 7245671
    Abstract: Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal, a processor for decoding the layered in-phase signal and the layered quadrature signal to produce a single layer in-phase signal and a single layer quadrature signal, a digital-to-analog encoder for converting the single layer in-phase signal and the single layer quadrature signal to a single layer in-phase analog signal and a single layer quadrature analog signal and a modulator for modulating the single layer in-phase analog signal and the single layer quadrature analog signal to produce a single layer signal.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: July 17, 2007
    Assignee: The DirecTV Group, Inc.
    Inventors: Ernest C. Chen, Tiffany S. Furuya, Philip R. Hilmes, Joseph Santoru
  • Dual layer signal processing in a layered modulation digital signal system
    Patent number: 7173981
    Abstract: Systems and methods for receiving layered modulation for digital signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal and a processor for decoding the layered in-phase signal and the layered quadrature signal to produce one or more discrete layer signals.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: February 6, 2007
    Assignee: The DirecTV Group, Inc.
    Inventors: Ernest C. Chen, Tiffany S. Furuya, Philip R. Hilmes, Joseph Santoru