Patents by Inventor Kazuya Kumazaki

Kazuya Kumazaki 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).

  • Converter and communication control method
    Patent number: 7599376
    Abstract: A converter for connecting its ATM network with other ATM networks through a LAN, which is provided with an address translation table storing external VPIs, internal VPIs uniquely assigned to the LAN, and opposing MAC addresses for opposing converters in correspondence and a processing unit for performing control for transmitting, to the LAN, frames changed from the external VPI/VCIs of headers of cells from its ATM network to the internal VPI/VCIs by referring to the address translation table and having opposing MAC addresses corresponding to the internal VPI/VCIs attached, removing the opposing MAC addresses of frames received from the LAN by referring to the address translation table, and transmitting cells changed from internal VPI/VCIs to external VPI/VCIs to its ATM network.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: October 6, 2009
    Assignee: Fujitsu Limited
    Inventors: Shinya Nakagaki, Toshikazu Inoue, Kazuya Kumazaki, Mineharu Hattori, Tetsuji Ichikawa, Nobuo Iguchi, Akio Morimoto, Michio Kusayanagi
  • CONVERTER AND COMMUNICATION CONTROL METHOD
    Publication number: 20090041031
    Abstract: A converter for connecting its ATM network with other ATM networks through a LAN, which is provided with an address translation table storing external VPIs, internal VPIs uniquely assigned to the LAN, and opposing MAC addresses for opposing converters in correspondence and a processing unit for performing control for transmitting, to the LAN, frames changed from the external VPI/VCIs of headers of cells from its ATM network to the internal VPI/VCIs by referring to the address translation table and having opposing MAC addresses corresponding to the internal VPI/VCIs attached, removing the opposing MAC addresses of frames received from the LAN by referring to the address translation table, and transmitting cells changed from internal VPI/VCIs to external VPI/VCIs to its ATM network.
    Type: Application
    Filed: October 7, 2008
    Publication date: February 12, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Shinya Nakagaki, Toshikazu Inoue, Kazuya Kumazaki, Mineharu Hattori, Tetsuji Ichikawa, Nobuo Iguchi, Akio Morimoto, Michio Kusayanagi
  • Converter and communication control method
    Publication number: 20060182125
    Abstract: A converter for connecting its ATM network with other ATM networks through a LAN, which is provided with an address translation table storing external VPIs, internal VPIs uniquely assigned to the LAN, and opposing MAC addresses for opposing converters in correspondence and a processing unit for performing control for transmitting, to the LAN, frames changed from the external VPI/VCIs of headers of cells from its ATM network to the internal VPI/VCIs by referring to the address translation table and having opposing MAC addresses corresponding to the internal VPI/VCIs attached, removing the opposing MAC addresses of frames received from the LAN by referring to the address translation table, and transmitting cells changed from internal VPI/VCIs to external VPI/VCIs to its ATM network.
    Type: Application
    Filed: June 9, 2005
    Publication date: August 17, 2006
    Inventors: Shinya Nakagaki, Toshikazu Inoue, Kazuya Kumazaki, Mineharu Hattori, Tetsuji Ichikawa, Nobuo Iguchi, Akio Morimoto, Michio Kusayanagi