METHOD FOR MANAGING COMMUNICATION BETWEEN AN ELECTRONIC DEVICE, FOR EXAMPLE A CONTACTLESS CHIP CARD, AND A COMMUNICATION APPARATUS, FOR EXAMPLE A READER, AND CORRESPONDING ELECTRONIC DEVICE
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Abstract
The device is equipped with several protocol decoding means (DCDi) corresponding respectively to various communication protocols so as to be capable of dialoguing with the said communication apparatus during transactions selectively according to one of these communication protocols; the method comprises an automatic protocol detection comprising a) an activation (40) of all the decoding means at the start of a transaction, b) a delivery of the signal received by the electronic device to all the decoding means, c) an analysis (41) of at least one signal delivered by at least one of the decoding means and d) a selection (42) of one of the decoding means on the basis of the result of the said analysis, and a conducting of the said transaction with the selected decoding means.
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Citations
58 Claims
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1-30. -30. (canceled)
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31. A method for managing communication between an integrated circuit (IC) card and a communication apparatus, the IC card comprising a plurality of decoders for a plurality of communication protocols to communicate with the communication apparatus based upon at least one of the plurality of communication protocols, the method comprising:
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routing an input signal received by the IC card to each of a plurality of decoders; routing output signals of the plurality of decoders to a protocol detection module, the protocol detection module for analyzing each output signal generated from the plurality of decoders in parallel, each output signal comprising a respective decoded version of the input signal using a respective communication protocol; selecting at least one of the plurality of decoders based upon a result of the analysis; and conducting a transaction with the at least one selected decoder; wherein the selecting comprises if a decoder generates at least one indication identifying a communication protocol associated therewith, then the at least one indication comprises an identification cue based upon matching a marker characteristic of the input signal with a respective protocol of the decoder, and if when each decoder delivers an error indication except one, then the error indication comprises an error cue because the matching of the marker characteristic of the input signal with the respective protocol of the decoder does not occur. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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42. An integrated circuit (IC) for an IC card, the IC comprising:
a communication interface configured to communicate with a communication apparatus and comprising a plurality of decoders, each decoder configured to decode an input signal using a corresponding communication protocol from a plurality thereof, a protocol detector configured to perform an analysis of each output signal generated by said plurality of decoders using a respective communication protocol, and a selector configured to select a decoder from said plurality thereof based upon the analysis, and if the decoder generates at least one indication identifying a communication protocol associated therewith, then the at least one indication comprises an identification cue based upon matching a marker characteristic of the input signal with a respective protocol of the decoder, and if when each decoder delivers an error indication except one, then the error indication comprises an error cue because the matching of the marker characteristic of the input signal with the respective protocol of the decoder does not occur. - View Dependent Claims (43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54)
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55. An integrated circuit (IC) comprising:
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a plurality of decoders, each decoder configured to decode an input signal using a corresponding communication protocol from a plurality thereof; a protocol detector configured to perform an analysis of each output signal generated by said plurality of decoders using a respective communication protocol; and a selector configured to select a decoder from said plurality thereof based upon the analysis, and if the decoder generates at least one indication identifying a communication protocol associated therewith, then the at least one indication comprises an identification cue based upon matching a marker characteristic of the input signal with a respective protocol of the decoder, and if when each decoder delivers an error indication except one, then the error indication comprises an error cue because the matching of the marker characteristic of the input signal with the respective protocol of the decoder does not occur. - View Dependent Claims (56, 57, 58)
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Specification