Patents by Inventor Norihide Noyama

Norihide Noyama 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).

  • Network system having function of changing route upon failure
    Patent number: 7243258
    Abstract: A network system includes a plurality of networks, a first internetwork apparatus having a plurality of first ports each connected to the plurality of networks, a second internetwork apparatus having a plurality of second ports each connected to the plurality of networks, and a data transmission path connected to the first and second internetwork apparatuses to transmit data mutually between the first and second internetwork apparatuses. In the normal state, each of the plurality of first ports is caused to be able to transmit and receive data to and from one of the plurality of networks and the plurality of second ports are caused not to be able to receive data from the plurality of networks and to be able to transmit data to the plurality of networks.
    Type: Grant
    Filed: October 10, 2003
    Date of Patent: July 10, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura
  • Network system having function of changing route upon failure
    Publication number: 20050076231
    Abstract: A network system includes a plurality of networks, a first internetwork apparatus having a plurality of first ports each connected to the plurality of networks, a second internetwork apparatus having a plurality of second ports each connected to the plurality of networks, and a data transmission path connected to the first and second internetwork apparatuses to transmit data mutually between the first and second internetwork apparatuses. In the normal state, each of the plurality of first ports is caused to be able to transmit and receive data to and from one of the plurality of networks and the plurality of second ports are caused not to be able to receive data from the plurality of networks and to be able to transmit data to the plurality of networks.
    Type: Application
    Filed: October 10, 2003
    Publication date: April 7, 2005
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura
  • Network system having function of changing route upon failure
    Patent number: 6647509
    Abstract: A network system includes a plurality of networks, a first internetwork apparatus having a plurality of first ports each connected to the plurality of networks, a second internetwork apparatus having a plurality of second ports each connected to the plurality of networks, and a data transmission path connected to the first and second internetwork apparatuses to transmit data mutually between the first and second internetwork apparatuses. In the normal state, each of the plurality of first ports is caused to be able to transmit and receive data to and from one of the plurality of networks and the plurality of second ports are caused not to be able to receive data from the plurality of networks and to be able to transmit data to the plurality of networks.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: November 11, 2003
    Assignees: Hitachi, Ltd., Hitachi Microcomputer System Ltd.
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura
  • Network system having function of changing route upon failure
    Publication number: 20030093559
    Abstract: A network system includes a plurality of networks, a first internetwork apparatus having a plurality of first ports each connected to the plurality of networks, a second internetwork apparatus having a plurality of second ports each connected to the plurality of networks, and a data transmission path connected to the first and second internetwork apparatuses to transmit data mutually between the first and second internetwork apparatuses. In the normal state, each of the plurality of first ports is caused to be able to transmit and receive data to and from one of the plurality of networks and the plurality of second ports are caused not to be able to receive data from the plurality of networks and to be able to transmit data to the plurality of networks.
    Type: Application
    Filed: December 24, 2002
    Publication date: May 15, 2003
    Applicant: Hitachi, Ltd.
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura
  • Network system having function of changing route upon failure
    Patent number: 6505311
    Abstract: A network system has a plurality of networks. A first internetwork apparatus has a plurality of first ports each connected to the plurality of networks and a second internetwork apparatus has a plurality of second ports each connected to the plurality of networks. A data transmission path is connected to the first and second internetwork apparatuses to transmit data therebetween. In the normal state, each of the plurality of first ports is able to transmit and receive data to and from one of the plurality of networks while the plurality of second ports are able to transmit, but not receive data from the plurality of networks. A failure occurring in one of the plurality of first ports and a route therefrom to one of the plurality of networks is detected.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: January 7, 2003
    Assignees: Hitachi, Ltd., Hitachi Microcomputer System
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura
  • Internetwork route calculation execution method and apparatus
    Patent number: 6370653
    Abstract: In an internetwork apparatus for interconnecting a plurality of networks having a route calculating module for calculating routes and a management module for managing a whole operation of the internetwork apparatus, the management module substitutes for route calculation in place of the route calculating module, when a fault occurs in the route calculating module, and packets are repeated in accordance with route calculation results made by the management module.
    Type: Grant
    Filed: November 25, 1998
    Date of Patent: April 9, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Shinya Ichinohe, Shigeki Morimoto, Norihide Noyama, Takunori Yoneno
  • Network system having function of changing route upon failure
    Patent number: 6148411
    Abstract: A network system includes a plurality of networks, a first internetwork apparatus having a plurality of first ports each connected to the plurality of networks, a second internetwork apparatus having a plurality of second ports each connected to the plurality of networks, and a data transmission path connected to the first and second internetwork apparatuses to transmit data mutually between the first and second internetwork apparatuses. In the normal state, each of the plurality of first ports is caused to be able to transmit and receive data to and from one of the plurality of networks and the plurality of second ports are caused not to be able to receive data from the plurality of networks and to be able to transmit data to the plurality of networks.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: November 14, 2000
    Assignees: Hitachi, Ltd., Hitachi Microcomputer System, Ltd.
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura
  • Network system having function of changing route upon failure
    Patent number: 6032266
    Abstract: A network system includes a plurality of networks, a first internetwork apparatus having a plurality of first ports each connected to the plurality of networks, a second internetwork apparatus having a plurality of second ports each connected to the plurality of networks, and a data transmission path connected to the first and second internetwork apparatuses to transmit data mutually between the first and second internetwork apparatuses. In the normal state, each of the plurality of first ports is caused to be able to transmit and receive data to and from one of the plurality of networks and the plurality of second ports are caused not to be able to receive data from the plurality of networks and to be able to transmit data to the plurality of networks.
    Type: Grant
    Filed: April 3, 1997
    Date of Patent: February 29, 2000
    Assignees: Hitachi, Ltd., Hitachi Microcomputer System, Ltd.
    Inventors: Shinya Ichinohe, Norihide Noyama, Tokuhiro Niwa, Masao Nakamura