Patents by Inventor Shuji Otsubo

Shuji Otsubo 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).

  • Base station and packet transfer equipment
    Patent number: 7995522
    Abstract: A base station and a router are interactively connected by a multilink group which transmits VoIP packets and a multilink group which transmits data packets other than VoIP packets. The base station and the router split transmission lines by referencing the ToS area of received packets and transmit only VoIP packets by way of a dedicated line. In this way, VoIP packets can be transmitted without being affected by other data packets, and the quality of VoIP can be warranted on the mobile network.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: August 9, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Shuji Otsubo, Tomoya Yokota, Kingo Miyoshi
  • BASE STATION AND PACKET TRANSFER EQUIPMENT
    Publication number: 20090016267
    Abstract: A base station and a router are interactively connected by a multilink group which transmits VoIP packets and a multilink group which transmits data packets other than VoIP packets. The base station and the router split transmission lines by referencing the ToS area of received packets and transmit only VoIP packets by way of a dedicated line. In this way, VoIP packets can be transmitted without being affected by other data packets, and the quality of VoIP can be warranted on the mobile network.
    Type: Application
    Filed: April 23, 2008
    Publication date: January 15, 2009
    Inventors: Shuji Otsubo, Tomoya Yokota, Kingo Miyoshi