Hitachi, Ltd.

Hitachi Microcomputer Engineering, Ltd.

Hitachi Control Systems, Inc.

Hitachi Information Control Systems, Inc.

Shigenobu Yanai

Yutaka Sato

Setsuo Arita

Masahiro Nagasu

Kuniaki Matsumoto

Naoyuki Yamada

Hiroyuki Akiyama

Setsuo Tsuruta

Yuji Ichinose

Toshiyuki Murakami

Daisuke Shinma

Kiyomi Kishi

Keiji Ishida

Kiminori Nakamura

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.

Information transmission system and information transmission method

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.

Communication apparatus, communication method and installation method of railway vehicle-facility intra communication system

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.

Information processing system

Growing community of inventors

Hitachinaka, Japan

Shigenobu Yanai