IC-tag read-write apparatus
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Abstract
A radio data communication apparatus includes a circuit unit and at least one antenna unit. The circuit unit performs data read and write operations relative to an IC tag. Each antenna unit has an antenna and conducts a predetermined signal modulation to a first signal to be transmitted through the antenna by radio to a specific IC tag in the data write operation. Also, each antenna unit conducts a predetermined signal demodulation to a second signal received through the antenna from the specific IC tag in accordance with the data read operation. The antenna unit is arranged at a position separated from the circuit unit.
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Citations
49 Claims
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1-38. -38. (canceled)
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39. A radio data communication apparatus, comprising:
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a circuit unit configured to perform a data read operation and a data write operation relative to an IC tag; and
at least one antenna unit, each antenna unit being arranged at a position separated from the circuit unit, and including an antenna configured to transmit a first signal and receive a second signal, and a signal modulation circuit configured to modulate a carrier wave and a data signal with a predetermined signal modulation to generate the first signal to be transmitted by radio transmission through the antenna to a specific IC tag in the data write operation, and conduct a predetermined signal demodulation to the second signal received from the specific IC tag in the data read operation. - View Dependent Claims (40, 41, 42, 43, 44)
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45. A radio data communication apparatus, comprising:
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carrier wave generating means for generating a carrier wave having a specific frequency;
control means for outputting a data signal and controlling output of the carrier wave to synchronize the data signal to the carrier wave, and performing a data read operation and a data write operation relative to an IC tag; and
at least one antenna unit, each antenna unit being arranged at a position separated from the control means, and including an antenna configured to transmit a first signal and receive a second signal, and signal modulation means for modulating the carrier wave and the data signal with a predetermined signal modulation to generate the first signal to be transmitted by radio transmission through the antenna to a specific IC tag in the data write operation, and conduct a predetermined signal demodulation to the second signal received from the specific IC tag in the data read operation. - View Dependent Claims (46, 47, 48, 49)
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Specification