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Method for selecting one or more transponders

  • US 20050024186A1
  • Filed: 07/30/2004
  • Published: 02/03/2005
  • Est. Priority Date: 08/01/2003
  • Status: Active Grant
First Claim
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1. A method for selecting one or more transponders from a plurality of transponders by a base station, said method comprising the following steps:

  • a) generating in each transponder of said plurality of transponders a random number bit sequence, b) providing in each of said plurality of transponders an identification bit sequence including said random number bit sequence, c) transmitting in bit-by-bit fashion a selection bit sequence from said base station to said plurality of transponders, d) comparing in bit-by-bit fashion in each of said transponders bits of said selection bit sequence with corresponding bits of said identification bit sequence using a predeterminable comparing criterion, to provide a comparing result, e) allocating to a transponder selection bit for each transponder a value according to said comparing result, and f) selecting one or more transponders depending on the value of their transponder selection bits.

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