Patents by Inventor Etsuko Koyanagi

Etsuko Koyanagi 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).

  • Retry communication control method and system
    Patent number: 8694677
    Abstract: A terminal apparatus firstly transfers packets of a trial class. When the communication quality is insufficient, the terminal apparatus determines after a predetermined period of time whether or not to transfer the trail-class packets again according to a traffic rate of priority-class packets. There are provided a trial-class band capacity not to discard packets of the trial class and a priority-class band capacity not to discard packets of the priority class. Trial-class packets exceeding the former are discarded but the packets that has once become a priority class will not be discarded unless the latter is exceeded.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: April 8, 2014
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Etsuko Koyanagi, Satoshi Miyayama, Naotaka Morita, Shunsuke Mori
  • Re-challenge communication control method and system thereof, packet transfer enabled/disabled decision method, packet transfer device, packer transfer system, packet monitoring method, call control device, monitor device, and program
    Publication number: 20060168336
    Abstract: A terminal apparatus firstly transfers packets of a trial class. When the communication quality is insufficient, the terminal apparatus determines after a predetermined period of time whether or not to transfer the trail-class packets again according to a traffic rate of priority-class packets. There are provided a trial-class band capacity not to discard packets of the trial class and a priority-class band capacity not to discard packets of the priority class. Trial-class packets exceeding the former are discarded but the packets that has once become a priority class will not be discarded unless the latter is exceeded.
    Type: Application
    Filed: July 30, 2003
    Publication date: July 27, 2006
    Inventors: Etsuko Koyanagi, Satoshi Miyayama, Naotaka Morita, Shunsuke Mori