Hitachi, Ltd.

Shoshiro Kuzunuki

Kimiya Yamaashi

Koichiro Tanikoshi

Masayuki Tani

Masayasu Futakawa

Atsuhiko Nishikawa

Masato Horita

Harumi Uchigasaki

Takekazu Maruyama

An information terminal system including a process control computer and a portable terminal device for inputting information to said process control computer and gaining information from said process control, includes component information storing means for storing information for distinguishing each one of plural components composing a plant and component identifying means for identifying a component from plural components composing a plant and existing in the direction indicated by and at the location of the portable terminal device, by using information for distinguishing each one of the plural components stored in the component information storing means.

Information terminal system getting information based on a location and

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Hitachinaka, Japan

Shoshiro Kuzunuki