Patents by Inventor Stanely W. Takata

Stanely W. Takata 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).

  • Virtual-chassis switch network topology
    Patent number: 6567403
    Abstract: A “virtual-chassis” topology network includes three or more “front-plane” switches and two or more “back-plane switches”. Front-plane switches can be added to increase the number of ports available for connecting network segments; port count can be exchanged for bandwidth by adding more back-plane switches. The virtual-chassis topology relies on an asymmetrical trunk mode in which each front-plane switch is operating in trunk mode, while the back-plane switches are not. The number of ports per trunk equals the number of back-plane switches so that each front-plane switch is coupled to every back-plane switch (and vice versa). Each back-plane switch is only coupled to front-plane switches, while the untrunked ports of front-plane switches are available for links to network segments.
    Type: Grant
    Filed: April 30, 1998
    Date of Patent: May 20, 2003
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Paul T. Congdon, James E. Lucari, Stanely W. Takata