HIGH-SPEED COMMUNICATION TYPE ELECTRONIC IDENTIFICATION SYSTEM AND LABEL FOR THE SAE SYSTEM

摘要

PURPOSE: To realize high-speed demodulation without damaging the electronic circuit of a label by limiting the voltage generated from a resonance circuit to a prescribed maximum value. CONSTITUTION: An electronic identification system is provided with a transmitter-receiver for generating a modulated electromagnetic field by using the information transferred to a label and at least one label. The label is provided with at least one resonance circuit for receiving information and processing the information and a control means which temporarily expands the bandwidth of the resonance circuit for suitably improving the information flow between the transmitter-receiver and label. The label is also provided with a limiter circuit 20 and the circuit 20 is provided with a control means which limits the voltage generated from the resonance circuit to a prescribed maximum value.