RFID TAG APPARATUS AND AUTHENTICATION METHOD THEREOF
First Claim
1. An RFID (radio frequency identifier) tag apparatus comprising:
- a device adapted to receive a first signal and outputs a second signal in response to the first signal;
a device recognizing unit adapted to output the first signal to the device in response to a control signal and receive the second signal to output n-bit data, where n is an integer greater than 1;
an RF processor adapted to receive an RF signal and extract information from the RF signal; and
a controller adapted to output the control signal to the device recognizing unit in response to the information and process the n-bit data in response to the information.
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Abstract
Provided is a radio frequency identifier (RFID) tag apparatus and an authentication method thereof. The RFID tag apparatus includes a device, a device recognizing unit, an RF processor, and a controller. The device receives a first signal and outputs a second signal in response to the first signal. The device recognizing unit outputs the first signal to the device in response to control signal and receives the second signal to output n-bit data, where n is an integer greater than 1. The RF processor receives an RF signal and extracts information from the RF signal. The controller outputs the control signal to the device recognizing unit in response to the information and processes the n-bit data in response to the information.
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Citations
19 Claims
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1. An RFID (radio frequency identifier) tag apparatus comprising:
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a device adapted to receive a first signal and outputs a second signal in response to the first signal; a device recognizing unit adapted to output the first signal to the device in response to a control signal and receive the second signal to output n-bit data, where n is an integer greater than 1; an RF processor adapted to receive an RF signal and extract information from the RF signal; and a controller adapted to output the control signal to the device recognizing unit in response to the information and process the n-bit data in response to the information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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8. The RFID tag apparatus of claim wherein the device comprises:
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a charging unit, a voltage across both ends of which increases in response to the first signal; a threshold voltage generator adapted to generate a threshold voltage; and a comparator adapted to compare the threshold voltage with a voltage input from the charging unit to output the second signal.
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18. A method for authenticating an RFID (radio frequency identifier) tag including a device adapted to receive a first signal and output a second signal in response to the first signal, the method comprising:
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outputting the first signal to the device; receiving the second signal from the device to generate n-bit data, where n is an integer greater than 1; and comparing the n-bit data with n-bit data stored in the storage unit to perform authentication. - View Dependent Claims (19)
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Specification