COMMUNICATION APPARATUS, COMMUNICATION SYSTEM AND POWER SOURCE CONTROL METHOD

摘要

PROBLEM TO BE SOLVED: To share data among RF tags even when a plurality of RF tags coexist that perform communication in different frequency bands.

SOLUTION: An RF tag section 15 performs communication using an electromagnetic wave of a frequency band f1. An RF tag section 16 performs communication using an electromagnetic wave of a frequency band f2 different from the frequency band f1. A storage section 14 includes a shared region accessible from the RF tag sections 15, 16. A power source control section 13 generates power for driving the storage section 14 and the RF tag section 15 based on the electromagnetic wave of the frequency band f1 and supplies the generated power to the storage section 14 and the RF tag section 15. Furthermore, the power source control section 13 generates power for driving the storage section 14 and the RF tag section 16 from the electromagnetic wave of the frequency band f2 and supplies the generated power to the storage section 14 and the RF tag section 16.

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