Patents by Inventor Sadato Ando

Sadato Ando 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 connection switching method and ATM switch
    Patent number: 6822962
    Abstract: A communication network capable of establishing an SVC bypass route when a failure occurs in a PVC multiplexed line wherein each of ATM switches at both ends of a PVC stores the relations of SVC specifying information and the other party PVC information in association with each PVC in a management table. At the time of bypassing, one of the switches transmits a message including the other party PVC information to another ATM switch for each PVC to be bypassed and another ATM switch specifies a PVC to be switched on the basis of the received message and switches the PVC to an SVC specified by the corresponding SVC specifying information stored in the management table.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: November 23, 2004
    Assignee: Hitachi Telecom Technologies, Ltd.
    Inventors: Toshimichi Noake, Toshiki Ichikawa, Mitsumasa Mori, Katsuya Ohwada, Sadato Ando
  • Communication apparatus having shaping function
    Publication number: 20040213245
    Abstract: A communication apparatus, wherein for a connection identified by an identifier of a cell from an input port, the communication apparatus is capable of: determining transmission scheduled time of the cell according to predetermined rules; selecting a first connection when the transmission scheduled time has come; and selecting a second connection if there is no fixed-length packet to be transmitted for the first connection.
    Type: Application
    Filed: February 20, 2001
    Publication date: October 28, 2004
    Inventors: Motohiro Asai, Shota Tsukanaka, Sadato Ando, Takayuki Nishijima