IC card with error processing unit for sense amplifiers
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United States of America Patent
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Apr 20, 1999
Grant Date -
N/A
app pub date -
Nov 3, 1997
filing date -
May 8, 1997
priority date (Note) -
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Abstract
An IC card having a memory for receiving data from and sending data to a data reader/writer includes a reading-completion detection circuit for detecting if each sense amplifier in the IC card has completed data reading from the memory and a control circuit which ignores a command sent from the data reader/writer when no reading completion detection signal is output from the data reading-completion detection circuit upon verifying a password sent from the data reader/writer.
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