Patents by Inventor Mitsuru Tanida

Mitsuru Tanida 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).

  • Voice data communication system
    Patent number: 7039043
    Abstract: In a voice data communication system comprising a switchboard for switching lines, a network, interworking units for interworking a protocol on the network with a protocol for a line switching, and IP extension terminals connected to the interworking units through the network, a switchboard notifies a communication between interworking units to the interworking units when recognizing the communication between the interworking units, which are provided corresponding to each of IP extension terminals, and establish a relay route to the interworking unit according to a notification from the switchboard and establish a voice data packet route to a route between the IP extension terminals through the network by using the relay route in response to a route establishment request from the IP extension terminals accommodated, or when the interworking unit is a single and the notification is received from the switchboard, establish a voice data packet route to a route between the IP extension terminals through the netw
    Type: Grant
    Filed: January 9, 2002
    Date of Patent: May 2, 2006
    Assignee: Fujitsu Limited
    Inventors: Hideyuki Sugihashi, Mitsuru Tanida, Hideaki Shimizu, Osamu Shimada
  • Voice data communication system
    Publication number: 20030103512
    Abstract: In a voice data communication system comprising a switchboard for switching lines, a network, interworking units for interworking a protocol on the network with a protocol for a line switching, and IP extension terminals connected to the interworking units through the network, a switchboard notifies a communication between interworking units to the interworking units when recognizing the communication between the interworking units, which are provided corresponding to each of IP extension terminals, and establish a relay route to the interworking unit according to a notification from the switchboard and establish a voice data packet route to a route between the IP extension terminals through the network by using the relay route in response to a route establishment request from the IP extension terminals accommodated, or when the interworking unit is a single and the notification is received from the switchboard, establish a voice data packet route to a route between the IP extension terminals through the netw
    Type: Application
    Filed: January 9, 2002
    Publication date: June 5, 2003
    Inventors: Hideyuki Sugihashi, Mitsuru Tanida, Hideaki Shimizu, Osamu Shimada