Patents by Inventor Akihiro Ogawara

Akihiro Ogawara 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).

  • High speed switching system in a radio-communication system including a plurality of main communication systems and a plurality of stand-by communication systems
    Patent number: 4985904
    Abstract: A switching system in a digital radio-communication system including a plurality of main radio-communication systems and a plurality of stand-by radio-communication systems provided for backing-up the main radio-communication systems. The switching system includes a plurality of switches independently operable from one another, the number of which is equal to the number of the stand-by radio-communication systems. Each switch switches between a stand-by radio-communication system defined in connection with the switch and a failed main radio-communication system, in a predetermined time.
    Type: Grant
    Filed: May 17, 1990
    Date of Patent: January 15, 1991
    Assignee: Fujitsu Limited
    Inventor: Akihiro Ogawara