Patents by Inventor Takehito Tsurumi

Takehito Tsurumi 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).

  • Call controlling apparatus, call controlling method, and computer program
    Patent number: 7890101
    Abstract: An I-CSCF and an S-CSCF are included in a single call controlling apparatus. A message from a terminal directed to one of a plurality of degenerate-call controlling apparatuses. The I-CSCF in that apparatus receives the message and forwards the message to an S-CSCF that serves as the storing destination, which is specified for each subscriber in advance. The I-CSCF is configured to receive a message that has been forwarded from the same call controlling apparatus or another call controlling apparatus and to control sessions of the terminal based on the received messages.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: February 15, 2011
    Assignee: Fujitsu Limited
    Inventors: Keiichiro Yamakawa, Takashi Mitsuhashi, Yuji Tajima, Takehito Tsurumi, Takashi Kitano
  • Call controlling apparatus, call controlling method, and computer program
    Publication number: 20070191004
    Abstract: An I-CSCF and an S-CSCF are included in a single call controlling apparatus. A message from a terminal directed to one of a plurality of degenerate-call controlling apparatuses. The I-CSCF in that apparatus receives the message and forwards the message to an S-CSCF that serves as the storing destination, which is specified for each subscriber in advance. The I-CSCF is configured to receive a message that has been forwarded from the same call controlling apparatus or another call controlling apparatus and to control sessions of the terminal based on the received messages.
    Type: Application
    Filed: May 22, 2006
    Publication date: August 16, 2007
    Inventors: Keiichiro Yamakawa, Takashi Mitsuhashi, Yuji Tajima, Takehito Tsurumi, Takashi Kitano