System for authenticating an authorized user of an IC card
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United States of America Patent
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-
Sep 8, 1992
Grant Date -
N/A
app pub date -
Nov 28, 1990
filing date -
Dec 1, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An IC card which has a timer circuit that shuts off the IC card within a predetermined time interval is used with a terminal which resets the timer circuit in the IC card in response to any terminal operations. This prevents the IC card from shutting itself off during the terminal operations.
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