Patents by Inventor Makoto Imahashi

Makoto Imahashi 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).

  • IP COMMUNICATION NETWORK SYSTEM HAVING A GATEWAY FUNCTION WITH COMMUNICATION PROTOCOL CONVERSION BETWEEN A SWITCHED CIRCUIT NETWORK AND A PACKET SWITCHED NETWORK INCLUDING DATA OVER TCP/IP AND VOICE/FAX OVER RTP
    Patent number: 6914898
    Abstract: An IP communication interface device includes first and second connecting units, and first, second and third processors. The first processor coding first media data as B-channel data inputted to the first connecting unit from a circuit switched network, decoding packet-disassembled media data into which a packet of second media data inputted to the second connecting unit from a LAN is disassembled, and transmitting the decoded media data to the first connecting unit for forwarding as the first media data to the circuit switched network. The second processor packetizing first coded media data, disassembling the packer of the second media data, and transmitting as packet-disassembled media data to the first processor.
    Type: Grant
    Filed: December 14, 2000
    Date of Patent: July 5, 2005
    Assignees: Fujitsu Limited, Fujitsu I-Network Systems Limited
    Inventors: Kazutaka Sasagawa, Tsuyoshi Uehara, Yasushi Takahashi, Makoto Imahashi
  • IP Communication network system
    Publication number: 20010007555
    Abstract: An IP communication interface device includes first and second connecting units (51, 52), a first processing unit ( 931, 932, 933) for coding first media-corresponding data as B-channel data inputted to the first connecting unit from the switched circuit network, decoding packet-deassembled media-corresponding data into which a packet of second media-corresponding data inputted to the second connecting unit from the LAN is deassembled, and for transmitting the decoded media-corresponding data to the first connecting unit for forwarding the same data as the first media-corresponding data to the switched circuit network, a second processing unit (941, 942, 943) for assembling the coded media-corresponding data coded by the first processing unit into a packet, deassembling the packet of the second media-corresponding data, and transmitting the same data as packet-deassembled media-corresponding data to the first processing unit, and a third processing unit (53) for generating the second media-corresponding data
    Type: Application
    Filed: December 14, 2000
    Publication date: July 12, 2001
    Applicant: FUJITSU LIMITED
    Inventors: Kazutaka Sasagawa, Tsuyoshi Uehara, Yasushi Takahashi, Makoto Imahashi