Multiple protocol smart card communication device

Details Multiple protocol smart card communication device Multiple protocol smart card communication device

2007-06-05

2007-06-05

Garber, Wendy R. (Department: 2635)

Communications: electrical

Selective

Interrogation response

C235S492000, C235S379000

Reexamination Certificate

active

10329814

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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ISO/IEC 14443-2, Final Committee Draft re. Identification cards - Contactless integrated circuit(s) cards - Proximity cards, Part 2:Radio frequency power and signal interface (Mar. 26, 1999), p. i-8.

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