Patents by Inventor Satoshi Fudatate

Satoshi Fudatate 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).

  • Method of and apparatus for realizing priority data transmissions for CSMA/CD system
    Patent number: 6501764
    Abstract: A method of transmitting a large amount of data with priority for use with a CSMA/CD system includes the steps of checking to see if a transmission line has a free space in response to a data transmission request from a node serving as a source node, transmitting, if the transmission line has a free space, a priority transmission notice carried by a data-link-layer protocol signal of the CSMA/CD system from the source node to the other nodes, transmitting data for which the data transmission request has been made from the source node to a node serving as a destination node, and putting the nodes except the source node in a transmission-disabled, reception-enabled state when the priority transmission notice is received by the nodes. Also provided is an apparatus for achieving such a method.
    Type: Grant
    Filed: November 18, 1998
    Date of Patent: December 31, 2002
    Assignee: Fujitsu Limited
    Inventors: Satoshi Fudatate, Hiroshi Nagano, Minoru Yamaguchi, Hiroaki Hamano, Naohide Sekiya
  • Network system and switching unit
    Patent number: 6229820
    Abstract: A network system of the present invention is constructed of first to third terminal equipments connected to a network. In the case of establishing such a plurality of connection calls that a plurality of connections belong to one call between the first and second terminal equipments, if unable to set all the connections between the first and second terminal equipments, the network sets the connections capable of ensuring bandwidths between the first and second terminal equipments, and sets a remaining connection between the first and third terminal equipments.
    Type: Grant
    Filed: March 9, 1998
    Date of Patent: May 8, 2001
    Assignee: Fujitsu Limited
    Inventors: Hideyasu Kanemaki, Satoshi Fudatate, Eitarou Hiraga, Minoru Yamaguchi, Toshikatsu Atarashi
  • ARP server
    Patent number: 6081845
    Abstract: An ARP server which can inform a calling terminal of an address suitable for an intended communication with a receiving terminal among a plurality of addresses usable for that purpose. The ARP server is equipped with an ATMARP table consisting of a plurality of unit tables each of which correlates an IP address and a plurality of ATM addresses. When receiving an inquiry about an ATM address corresponding to a certain IP address, the ARP server checks free bandwidths of circuits relating to respective ATM addresses in a unit table that corresponds to the IP address of interest, and informs the terminal that issued the inquiry of an ATM address with the largest free bandwidth.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: June 27, 2000
    Assignee: Fujitsu Limited
    Inventors: Hideyasu Kanemaki, Takeshi Okamoto, Satoshi Fudatate, Eitarou Hiraga, Toshikatsu Atarashi, Minoru Yamaguchi