Importance

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Abstract

A system for carrying out remote diagnosis is established between a maker and its users. Each user has a device controlled by its control computer and the maker has a trouble-diagnosing computer capable of diagnosing troubles which occur in its device. Public telecommunication lines including relay stations each capable of receiving and storing electronic mail messages connect these computers. The control computer of each user has a diagnostic data memory for storing diagnostic data which are used for diagnosing troubles occurring in the device and is capable of setting the diagnostic data in a form of electronic mail receivable by the relay stations. The maker's trouble-diagnosing computer is capable of reading out and saving electronic mail messages from the user's control computers stored at an associated one of the relay stations.

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First Claim