Secure transmission of information between electronic stations
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United States of America Patent
Stats
-
Mar 6, 1990
Issued Date -
N/A
app pub date -
Jul 11, 1988
filing date -
Apr 19, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An information transport system for conveying information between a franking meter machine and a Post Office equipment includes a unit having a non-volatile read/write memory which may consist of an EEPROM which can be transported between the meter and the equipment. When the unit is inserted in the franking machine a transaction code is verified by comparison with a registered code and information transfer is effected. The machine then generates a new code and stores it in a register. Upon return of the unit to the Post Office, the equipment responds to the transaction code stored in the unit to generate a new code corresponding to the new code generated and stored in the meter machine.
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