Identification card including switching means for built-in battery
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United States of America Patent
Stats
-
Sep 8, 1987
Grant Date -
N/A
app pub date -
Mar 18, 1986
filing date -
Mar 25, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An identification card such as an IC card includes a built-in type battery, a central processing unit, a RAM, an FET switch and a latch circuit. An IC card production, the RAM is not energized by the battery when the FET switch is turned off in conjunction with the latch circuit. When the IC card is first used by an card issuer, the RAM is energized by turning on the FET switch in conjunction with the latch circuit.
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Family
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