Patents by Inventor Reena Ramname

Reena Ramname 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).

  • CATV digital receiver intermodulation susceptibility tester
    Patent number: 8311086
    Abstract: A method and apparatus are provided for testing susceptibility of a receiver to intermodulation distortion of a digital channel, the method including selecting a first digital channel from channels in a composite signal, determining a first power measurement from the first digital channel, determining a total power measurement from other channels in the composite signal, and determining susceptibility of the first digital channel to intermodulation distortion by comparing the first power measurement and the total power measurement with intermodulation distortion characteristics of the receiver.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: November 13, 2012
    Assignee: Acterna LLC
    Inventors: Walter Miller, Pingnan Shi, Reena Ramname, Gregory W. Massey
  • Digital quality index for QAM digital signals
    Patent number: 7792183
    Abstract: The present invention relates to a system for calculating a digital quality index (DQI), which provides a rating on a predetermined scale, indicative of the impairments in a received quadrature amplitude modulated (QAM) signal in a CATV cable system. The DQI system utilizes bit error rates prior to and after forward error correction to calculate the DQI value. To increase the calculation rate, the bit error rates can be estimated using voltage errors, signal to noise ratios and/or average corner error metrics.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: September 7, 2010
    Assignee: Acterna LLC
    Inventors: Gregory W. Massey, Reena Ramname, Kevin J. Oliver
  • CATV Digital Receiver Intermodulation Susceptibility Tester
    Publication number: 20090086028
    Abstract: A method and apparatus are provided for testing susceptibility of a receiver to intermodulation distortion of a digital channel, the method including selecting a first digital channel from channels in a composite signal, determining a first power measurement from the first digital channel, determining a total power measurement from other channels in the composite signal, and determining susceptibility of the first digital channel to intermodulation distortion by comparing the first power measurement and the total power measurement with intermodulation distortion characteristics of the receiver.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 2, 2009
    Applicant: ACTERNA LLC
    Inventors: Walter MILLER, Pingnan SHI, Reena RAMNAME, Gregory W. MASSEY
  • Digital Quality Index For QAM Digital Signals
    Publication number: 20080089402
    Abstract: The present invention relates to a system for calculating a digital quality index (DQI), which provides a rating on a predetermined scale, indicative of the impairments in a received quadrature amplitude modulated (QAM) signal in a CATV cable system. The DQI system utilizes bit error rates prior to and after forward error correction to calculate the DQI value. To increase the calculation rate, the bit error rates can be estimated using voltage errors, signal to noise ratios and/or average corner error metrics.
    Type: Application
    Filed: September 18, 2007
    Publication date: April 17, 2008
    Applicant: ACTERNA LLC
    Inventors: Gregory W. Massey, Reena Ramname, Kevin J. Oliver