Transaction processing system

Details Transaction processing system Transaction processing system

1982-02-18

1985-06-25

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

With meter reading

179 2DP, H04Q 900

Patent

active

045257124

ABSTRACT:
In a system for the transaction operation with terminal units connected to a central unit through the communication line, the transaction operation by use of an ineligible terminal unit is prevented. An illegality preventive information is provided for each terminal unit and stored in each terminal unit and the central unit. When the terminal unit transmits transaction data to the central unit, it also transmits the illegality preventive information registered in it. The central unit carries out the transaction process when the received illegality preventive information coincides with or has a certain relationship to the registered information.

REFERENCES:
patent: 4025760 (1977-05-01), Trenkamp
patent: 4114139 (1978-09-01), Boyd et al.
patent: 4264782 (1981-04-01), Konheim
patent: 4315101 (1982-02-01), Atalla
patent: 4317957 (1982-03-01), Sendrow

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