Multiple protocol smart card communication device
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United States of America Patent
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Jun 10, 2003
Grant Date -
N/A
app pub date -
Jun 10, 1999
filing date -
Jun 10, 1999
priority date (Note) -
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Abstract
A communication link is established between the smart card and a computer using a valid smart card communication protocol. A smart card communication device determines the valid smart card communication protocol used by a smart card by polling a communication channel using a plurality of smart card communication protocols until a valid acknowledgment message is received. A radio frequency circuit is configured to communicate with the smart card using the valid smart card communication protocol. A digital signal processor having at least two demodulators demodulates an incoming data stream produced by the receiver in accordance with the valid smart card communication protocol in a dynamically reconfigurable manner.
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