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Information terminal system getting information based on a location and a direction of a portable terminal device

  • US 5,598,572 A
  • Filed: 03/15/1995
  • Issued: 01/28/1997
  • Est. Priority Date: 03/18/1994
  • Status: Expired due to Fees
First Claim
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1. An information terminal system including a process control computer which controls a plant composed of a plurality of physical components, and a portable terminal device for inputting information to at least one of said process control computer and said components and for obtaining information from at least one of said process control computer and said components, said information terminal system comprising:

  • component identifying means provided in at least one of said process control computer and said portable terminal device, for identifying a component from a plurality of physical components included in a plant, by using a direction indicated by said portable terminal device,wherein information pertaining to one of said components, as identified by said component identifying means, is input and obtained by said portable terminal device.

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