Patents by Inventor Quenie Qinghua Sun

Quenie Qinghua Sun 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).

  • Determining mean opinion scores (MOS) for variable bit rate audio streams
    Patent number: 8472349
    Abstract: Systems and methods for determining mean opinion scores (MOS) for variable bit rate (VBR) audio streams transmitted over VoIP networks are described. In an embodiment, a method may include monitoring a communication over a network and detecting portions of the communication including packets having a different packet payload sizes. The method may also include deriving bit rates corresponding to those portions. The method may then include calculating MOS values for each portion based on the derived bit rates, and calculating an overall MOS value for the communication based upon each individual MOS value averaged according to a distribution of packets having the different packet payload sizes.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: June 25, 2013
    Assignee: Tektronix, Inc.
    Inventors: Quenie Qinghua Sun, John Peter Curtin
  • Determining Mean Opinion Scores (MOS) for Variable Bit Rate Audio Streams
    Publication number: 20130155866
    Abstract: Systems and methods for determining mean opinion scores (MOS) for variable bit rate (VBR) audio streams transmitted over VoIP networks are described. In an embodiment, a method may include monitoring a communication over a network and detecting portions of the communication including packets having a different packet payload sizes. The method may also include deriving bit rates corresponding to those portions. The method may then include calculating MOS values for each portion based on the derived bit rates, and calculating an overall MOS value for the communication based upon each individual MOS value averaged according to a distribution of packets having the different packet payload sizes.
    Type: Application
    Filed: December 15, 2011
    Publication date: June 20, 2013
    Applicant: Tektronix, Inc.
    Inventors: Quenie Qinghua Sun, John Peter Curtin