Information terminal system getting information based on a location and a direction of a portable terminal device
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United States of America Patent
Stats
-
Jan 28, 1997
Grant Date -
N/A
app pub date -
Mar 15, 1995
filing date -
Mar 18, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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