Contactless data transmission system and method for contactless data transmission

摘要

A contactless data transmission system having a transponder and a write/read station, between which data can be exchanged by a HF signal. The transponder includes a receiver unit having a receiving interface for accepting the HF signal and having an output terminal providing a data signal formed from the HF signal. The receiver unit has means for receiving and processing at least two differently modulated and/or encoded HF signals. The transponder also includes a processing unit having a first input terminal that is connected to the output terminal of the receiver unit. The transponder also includes a detection unit for providing a control signal dependent on the performance of the received HF signal. The receiver unit and/or the processing unit can be controlled or driven dependent on the control signal.