Patents by Inventor Tomoo Kunikyo

Tomoo Kunikyo 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).

  • Patent number: 6226268
    Abstract: An information communication system in which a switch constituting section (2) housing a data generating source is connected to a center switch constituting section (1) through a communication channel (3) using an ATM technology as if the function of an ATM switch of distributed arrangement type was realized. This information communication system flexibly handles new kinds of information provided with the progress of times, and, even when a fault occurs, properly copes with the fault.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: May 1, 2001
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomoo Kunikyo, Keiichi Obara, Kazuo Nogami, Tamiya Ochiai
  • Patent number: 5062035
    Abstract: An improved time slot allocation method for a loop network. Loop networks in which the present invention is applied include a loop-connecting a control station and a number of branch stations. The control and branch stations each have at least one terminal connected thereto such that interstation communication, when demanded by a terminal, is made by passing a frame through the transmission path. The frame includes a synchronization area for indicating the leading end of the frame, a fixed-length control area, and a data area composed of a plurality of time slots. According to the invention, the control and branch stations are each allocated with a predetermined or unique number of time slots to be used by terminals for interstation communication. When a station has its reserve of unused time slots fall below a preset lower limit, the control station supplements time slots from its own reserve.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: October 29, 1991
    Assignees: Kabushiki Kaisha Toshiba, Nippon Telegram and Telephone Corporation
    Inventors: Shigeaki Tanimoto, Tadashi Kayano, Hirobumi Karasawa, Osamu Yamagishi, Tomoo Kunikyo
  • Patent number: 4779261
    Abstract: The present invention relates to a loop network arranged by loop-connecting a control station and a number of substations through a main transmission path where at least one of the substations comprises a branch station inserting and coupling another station into the main transmission path as a lobe or subloop. In order to prevent an out-of-step condition of the main transmission path, resulting from a failure in the lobe or subloop, the branch station includes a frame buffer for normally selecting the signal from the lobe or subloop and selecting the signal from the main transmission path during detection of a failure and on a bypass command, and for accumulating the selected signal in units of a single frame, and a mechanism for supplying the accumulated signal to the main transmission path.
    Type: Grant
    Filed: September 17, 1986
    Date of Patent: October 18, 1988
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Osamu Yamagishi, Tomoo Kunikyo, Tatsuo Kaji
  • Patent number: 4504945
    Abstract: Two hairpin networks are provided between two owner stations. A plurality of member stations are connected along the networks for mutual data communication. Each member station has two sets of reception and transmission terminals, one set being connected to one network and the other set to the other network, in reverse of order of connection relative to the two owner stations.
    Type: Grant
    Filed: November 7, 1983
    Date of Patent: March 12, 1985
    Assignee: Agency of Industrial Science and Technology
    Inventor: Tomoo Kunikyo