DATA DISPLAY DEVICE, INDIVIDUAL MANAGEMENT METHOD FOR DATA DISPLAY DEVICE, DATA DELIVERY CENTER AND DATA DELIVERY SYSTEM USING THE SAME

摘要

PROBLEM TO BE SOLVED: To efficiently perform individual management of apparatus at remote places connected through telephone lines. SOLUTION: The apparatus are provided with means for storing individual management information and means for accessing this individual management information and the individual management information is compared with the results of the previous communication by each of the communication with the apparatus, by which the exchanging, if any, of the apparatus by faults, etc., is made identifiable even from the remote places.