Data carrier provided with at least two decoding stages

  • US 7,570,716 B1
  • Filed: 01/19/2000
  • Issued: 08/04/2009
  • Est. Priority Date: 01/26/1999
  • Status: Expired due to Fees
First Claim
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1. A device comprising:

  • receiving means for receiving a modulated carrier signalwhich contains an encoded data signal, said encoded data signal including decoding instruction information;

    a power supply capable of generating an operating voltage from the modulated carrier signal;

    demodulation means for demodulating the received modulated carrier signal and for outputting the encoded data signal contained therein,decoding means for decoding the encoded data signal and for outputting a data signal,data processing means for processing the data output by the decoding means and powered by the power supply,the decoding means including at least a first physical decoding stage and a second physical decoding stage, the first decoding stage being arranged to decode said data signal encoded in conformity with a first decoding method whereas the second decoding stage is arranged to decode said data signal encoded in conformity with a second decoding method,and wherein said first decoding method is Manchester (MA) and the second decoding method is Miller; and

    wherein said decoding means further includes a decision stage capable of determining based on said decoding instruction information which of the first and second decoding stages is suitable to decode decodes the encoded data signal, and wherein the decoding stage information includes redundancy data.

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