METHOD FOR COMMUNICATION WITH NON-CONTACT BATTERYLESS DATA CARRIER

摘要

PROBLEM TO BE SOLVED: To enable data communication with a moving data carrier only inside the stable response area of strong electromagnetic wave distribution transmitted from a host controller side antenna. SOLUTION: Concerning the system of electromagnetic induced communication between a moving non-contact batteryless data carrier 3 and a host controller for communicating read and write data, a sensor 9 for detection detects that the data carrier 3 moves into a stable response area (f) of strong electromagnetic wave distribution at a host controller side antenna 7. With this detecting signal as the communication starting command of the host controller, data communication is performed with that data carrier 3.