Patent ID: 7498924

Claim:
An anticollision method to identify data carriers arranged in a communication field of a reader station, which method involves the following steps: sending interrogation information from the reader station to all data carriers arranged in the communication field, as a result of which the start of a quantity of N successive time slots is defined; sending response information from the data carriers to the reader station, wherein each data carrier selects one of the N time slots to send its response information identifying the data carrier; sending a time-slot progressing information, for progressing from the current time slot to the time slot following next in line, from the reader station to the data carriers, characterized in that the time-slot progressing information comprises a time-slot characterizing information formed by multiple pulses, wherein the multiple pulses identify one of the N time slots, and which is evaluated by the data carriers in order to establish the current time slot in each case.