×

Data carrier for transmitting data with different repetition frequencies

  • US 20030095033A1
  • Filed: 11/12/2002
  • Published: 05/22/2003
  • Est. Priority Date: 11/16/2001
  • Status: Active Grant
First Claim
Patent Images

1. A data carrier (1) for contactless communication with a communication station (40), the data carrier (1) comprising the means listed below:

  • reception means (3) for receiving an interrogation signal (IS), which interrogation signal (IS) can be generated by a communication station (40) and can be transmitted to the data carrier (1) in a contactless manner by a field produced by the communication station (40) and acting on the data carrier (1), and generating means (17) for generating a response signal (RS) upon reception of the interrogation signal (IS), and processing means (18) for processing the response signal (RS), said processing means (18) being designed to process the response signal (RS) into a transmission signal (MCRS) suitable for transmission to the communication station (40), which transmission signal (MCRS) is recurrently transmitted to the communication station (40) with a specific repetition frequency, and determination means (22) for determinating calculating at least one representative value (REP1, REP2), the representative value (REP1, REP2) representing the field strength of the field acting on the data carrier (1), and control connection means (25) between the determination means (22) and the generating means (17) and/or the processing means (18), said control connection means (25) being designed to controllably influence the generating means (17) and/or the processing means (18) as a function of the at least one representative value (REP1, REP2), i.e. to vary, as a function of the at least one representative value (REP1, REP2), the repetition frequency with which the transmission signal (MCRS) is transmitted to the communication station (40).

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×