Patents by Inventor Keiko Yanagita

Keiko Yanagita 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).

  • Speech quality evaluation system and an apparatus used for the speech quality evaluation
    Publication number: 20040215448
    Abstract: A speech quality evaluation system comprising: (1) sound quality evaluation units; and (2) network analyzers. The speech quality evaluation system transmits sound signals used for evaluation from the sound quality evaluation unit; the network analyzer captures a packet which corresponds to the sound part of the sound signals used for evaluation; receives the sound signals used for evaluation which have become degraded in passing through the IP network; and the network analyzer captures a packet which corresponds to the sound part of the sound signals used for evaluation.
    Type: Application
    Filed: March 24, 2004
    Publication date: October 28, 2004
    Applicant: AGILENT TECHNOLOGIES, INC.
    Inventors: Kazuhiko Funatsu, Keiko Yanagita, Taiji Katsube