Patents by Inventor Eizou Hashi

Eizou Hashi 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).

  • ATM controller and ATM communication control device
    Patent number: 6714989
    Abstract: There is provided an ATM controller which can support setting or alteration of protocol processing, and more greatly reduce the load (overhead) of software processing. The ATM controller performs the processing of an ATM layer and an AAL layer between a terminal and an ATM network, and comprises cell transmit control means for transferring a packet from a terminal side to an ATM network side while segmenting the packet into data cells, cell reception control means for reassembling data cells received from the ATM network side into a packet and transferring the packet to the terminal side, a rewritable memory for storing a firmware, and a microprocessor for performing a cell analysis and the processing corresponding to the analysis result.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: March 30, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Mika Mizutani, Tatsuya Yokoyama, Eizou Hashi, Osamu Takada, Yoshiki Watanabe
  • ATM controller and ATM communication control device
    Patent number: 5974466
    Abstract: There is provided an ATM controller which can support setting or alteration of protocol processing, and more greatly reduce the load (overhead) of software processing. The ATM controller performs the processing of an ATM layer and an AAL layer between a terminal and an ATM network, and comprises cell transmit control moans for transferring a packet from a terminal side to an ATM network side while segmenting the packet into data cells, cell reception control means for reassembling data cells received from the ATM network side into a packet and transferring the packet to the terminal side, a rewritable memory for storing a firmware, and a microprocessor for performing a cell analysis and the processing corresponding to the analysis result.
    Type: Grant
    Filed: December 27, 1996
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Mika Mizutani, Tatsuya Yokoyama, Eizou Hashi, Osamu Takada, Yoshiki Watanabe