RFID tag
First Claim
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1. An RFID tag characterized by comprising:
- an external power input unit which inputs external power;
a first antenna unit which receives power from a communication device;
a first power supply unit which extracts power from the radio wave received by said first antenna unit;
a memory unit; and
a control unit which operates upon receiving power from said first power supply unit and controls permission and inhibition of access from the communication device to said memory unit in accordance with presence/absence of input of power from said external power input unit.
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Abstract
An RFID tag includes an external power input unit, first antenna unit, first power supply unit, memory unit, and control unit. The external power input unit inputs external power. The first antenna unit receives power from a communication device. The first power supply unit extracts power from the radio wave received by the first antenna unit. The control unit operates upon receiving power from the first power supply unit and controls permission and inhibition of access from the communication device to the memory unit in accordance with presence/absence of input of power from the external power input unit.
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Citations
16 Claims
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1. An RFID tag characterized by comprising:
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an external power input unit which inputs external power; a first antenna unit which receives power from a communication device; a first power supply unit which extracts power from the radio wave received by said first antenna unit; a memory unit; and a control unit which operates upon receiving power from said first power supply unit and controls permission and inhibition of access from the communication device to said memory unit in accordance with presence/absence of input of power from said external power input unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification