Multiple protocol smart card communication device
US7227449B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2002 |
| Grant date | Jun 5, 2007 |
| Priority date | — |
| Expiry date | Sep 29, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07F7/0866
- WIPO fieldControl
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.