Patents by Inventor Galen Hajime Sasaki

Galen Hajime Sasaki 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).

  • Fault management in a multichannel transmission system
    Publication number: 20010043563
    Abstract: Efficient methods for rerouting failed channels on to spare channels in a multichannel transmission system are described. One method uses a minimal amount of rerouting to reroute all the channels if one or two line cards fail.
    Type: Application
    Filed: May 4, 2001
    Publication date: November 22, 2001
    Inventors: Ornan Alexander Gerstel, William Eric Hall, Rajiv Ramaswami, Galen Hajime Sasaki
  • Fault management in a multichannel transmission system
    Patent number: 6256293
    Abstract: Efficient methods for rerouting failed channels on to spare channels in a multichannel transmission system are described. One method uses a minimal amount of rerouting to reroute all the channels if one or two line cards fail. Another set of methods reroute up to two failed channels on to spare channels in the event of channel failures. With this method only the failed channels are rerouted. However the failed channels may have to be routed through a slightly larger, but minimal, number of additional hops than with the first method.
    Type: Grant
    Filed: March 16, 1998
    Date of Patent: July 3, 2001
    Assignee: Tellabs Operations, Inc.
    Inventors: Ornan Alexander Gerstel, William Eric Hall, Rajiv Ramaswami, Galen Hajime Sasaki
  • Fault management in a multichannel transmission system
    Patent number: 5729527
    Abstract: Efficient methods for rerouting failed channels on to spare channels in a multichannel transmission system are described. One method uses a minimal amount of rerouting to reroute all the channels if one or two line cards fail.Another set of methods reroute up to two failed channels on to spare channels in the event of channel failures. With this method only the failed channels are rerouted. However the failed channels may have to be routed through a slightly larger, but minimal, number of additional hops than with the first method.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: March 17, 1998
    Assignee: Tellabs Operations, Inc.
    Inventors: Ornan Alexander Gerstel, William Eric Hall, Rajiv Ramaswami, Galen Hajime Sasaki