Patents by Inventor Shigenobu Yanai

Shigenobu Yanai 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).

  • Information transmission system and information transmission method
    Patent number: 7577668
    Abstract: A high reliability information transmission system which can continue transmission upon at the occurrence of multiple failures. The system includes two transmission lines and transmission terminals coupled to both of the transmission lines. Data can be transmitted between respective terminals using both transmission lines. The transmission terminals check the data reception status at the corresponding receiving terminals. When data is not being received, the data may be relayed to the receiving terminal using one of the other transmission lines.
    Type: Grant
    Filed: November 19, 2003
    Date of Patent: August 18, 2009
    Assignees: Hitachi, Ltd., Hitachi Information & Control Systems, Inc.
    Inventors: Yutaka Sato, Masahiro Nagasu, Shigenobu Yanai, Keiji Ishida, Toshiyuki Murakami
  • Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
    Patent number: 7336156
    Abstract: A communication apparatus installed in the trains and that in a complex station building, a station or a maintenance factory communication through feeders, trolley wires or third rails can communicate each other. The present invention can realize a low cost vehicle-facility intra communication system that provides various information services available in the train.
    Type: Grant
    Filed: April 5, 2004
    Date of Patent: February 26, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Setsuo Arita, Yuji Ichinose, Daisuke Shinma, Naoyuki Yamada, Hiroyuki Akiyama, Shigenobu Yanai
  • Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system
    Publication number: 20040227036
    Abstract: A communication apparatus installed in the trains and that in a complex station building, a station or a maintenance factory communication through feeders, trolley wires or third rails can communicate each other. The present invention can realize a low cost vehicle-facility intra communication system that provides various information services available in the train.
    Type: Application
    Filed: April 5, 2004
    Publication date: November 18, 2004
    Applicant: HITACHI, LTD.
    Inventors: Setsuo Arita, Yuji Ichinose, Daisuke Shinma, Naoyuki Yamada, Hiroyuki Akiyama, Shigenobu Yanai
  • Information transmission system and information transmission method
    Publication number: 20040103113
    Abstract: The present invention provides a high reliability information transmission system which can continue transmission at the occurrence of multiple failures.
    Type: Application
    Filed: November 19, 2003
    Publication date: May 27, 2004
    Inventors: Yutaka Sato, Masahiro Nagasu, Shigenobu Yanai, Keiji Ishida, Toshiyuki Murakami
  • Information processing system
    Patent number: 5299287
    Abstract: A problem solving system including apparatus for representing a relationship between a goal including subgoals and its lower level subgoals and for achieving the goal as a strategy of a first kind. Apparatus is provided for repetitively dividing a goal including subgoals into its lower level subgoals according to the relationship between the goal and the subgoals. A strategy of a second kind is used to specify the functions to be performed by the apparatus to achieve the lowest subgoal. Apparatus is also provided for simplifying and solving a complicated problem by executing the goal including subgoals by use of the strategies of the first and second kinds.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: March 29, 1994
    Assignees: Hitachi, Ltd., Hitachi Control Systems, Inc., Hitachi Microcomputer Engineering Ltd.
    Inventors: Setsuo Tsuruta, Kiyomi Kishi, Kuniaki Matsumoto, Shigenobu Yanai, Kiminori Nakamura