RFID TAG DEVICE, TAG IDENTIFICATION DEVICE AND RADIO COMMUNICATION SYSTEM
First Claim
Patent Images
1. A communication method of using an RFID tag device, comprising:
- generating a random number or a pseudo-random number;
holding identification information having a plurality of bits;
generating noise-added identification information by conducting either of reversal from “
0”
of a bit decided based on the generated random number generator to “
1”
or reversal from “
1”
of the bit to “
0”
, among a plurality of bits included in the identification information; and
transmitting the noise-added identification information by radio.
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Abstract
An RFID tag device has a random number generator which generates a random number or a pseudo-random number, an identification information holding unit which holds identification information having a plurality of bits, a noise addition processing unit which generates noise-added identification information by conducting either of reversal from “0” of a bit decided based on the random number generated by the random number generator to “1” or reversal from “1” of the bit to “0”, among a plurality of bits included in the identification information, and a radio communication unit which transmits the noise-added identification information by radio.
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Citations
12 Claims
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1. A communication method of using an RFID tag device, comprising:
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generating a random number or a pseudo-random number; holding identification information having a plurality of bits; generating noise-added identification information by conducting either of reversal from “
0”
of a bit decided based on the generated random number generator to “
1”
or reversal from “
1”
of the bit to “
0”
, among a plurality of bits included in the identification information; andtransmitting the noise-added identification information by radio. - View Dependent Claims (2, 3, 4)
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5. A communication method of using an RFID tag device, comprising:
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holding a filter having a plurality of bits capable of probabilistically detecting whether or not a certain bit string is included in a group of bit strings; generating a random number or a pseudo-random number; generating a noise-added filter obtained by either of reversal from “
0”
of a bit decided based on the generated random number or reversal from “
1”
of a bit decided based on the generated random number among a plurality of bits included in the filter; andtransmitting the noise-added filter by radio. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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Specification