Patents by Inventor Masataka Iizuka

Masataka Iizuka 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 and system for data communication
    Patent number: 5881061
    Abstract: A data communication method is provided by the present invention for carrying out a radio communication by intermingling circuit-switched communication and packet-switched communication using the TDMA communication mode between a radio base station and multiple radio terminals. An idle slot among slots for traffic channel is assigned for a generated circuit-switched data in order, and an idle slot among slots for control channel that belongs to a frame wherein a control signal is not transmitted for a generated packet-switched data, by this method. By assigning an idle slot among slots for control channel for packet-switched data, this method allows intermingling with the good efficiency of the circuit-switched communication and the packet-switched communication.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: March 9, 1999
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Masataka Iizuka, Hiroshi Yoshida, Hidetoshi Kayama