ELECTRONIC TAG AND ELECTRONIC TAG SYSTEM
First Claim
1. An electronic tag for transmitting and receiving data to and from an R/W, comprising:
- a data storage unit for storing transmission-use data converted into digital data; and
a tag identifier transmission-necessity judgment unit for comparing between comparison data transmitted from an R/W and data stored in the data storage unit and determining whether or not the identifier of the tag per se is to be transmitted to the R/W in order to participate in an anti-collision process carried out between the electronic tag and R/W as a necessary process prior to transmitting data to the R/W.
1 Assignment
0 Petitions
Accused Products
Abstract
An electronic tag comprises a unit for storing transmission-use data and a unit for both comparing between the stored data and comparison data sent from an R/W and for determining whether or not the identifier of the tag per se is to be transmitted to the R/W in order to participate in an anti-collision process carried out between the electronic tag and the R/W as a necessary process prior to transmitting data to the R/W for the purpose of speeding up the recognition of electronic tags retaining data satisfying a condition by making the electronic tags retaining data satisfying the condition, from among a large number of electronic tags, participate in the anti-collision process.
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Citations
10 Claims
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1. An electronic tag for transmitting and receiving data to and from an R/W, comprising:
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a data storage unit for storing transmission-use data converted into digital data; and a tag identifier transmission-necessity judgment unit for comparing between comparison data transmitted from an R/W and data stored in the data storage unit and determining whether or not the identifier of the tag per se is to be transmitted to the R/W in order to participate in an anti-collision process carried out between the electronic tag and R/W as a necessary process prior to transmitting data to the R/W. - View Dependent Claims (4, 5, 6, 7, 10)
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2. An electronic tag for transmitting and receiving data to and from an R/W, comprising:
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a threshold value judgment unit for comparing between transmission-use data converted into digital data and a threshold value corresponding to the transmission-use data and for judging whether or not a threshold value judgment condition is satisfied; a data storage unit for storing the transmission-use data if the threshold value judgment condition is satisfied; and a tag-identifier transmission unit for transmitting the identifier of the tag per se in order to participate in an anti-collision process carried out between the electronic tag and R/W as a necessary process prior to transmitting data to the R/W if the threshold value judgment condition has been satisfied. - View Dependent Claims (8)
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3. An electronic tag for transmitting and receiving data to and from an R/W, comprising:
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a threshold value judgment unit for comparing between transmission-use data converted into digital data and a threshold value corresponding to the transmission-use data and for judging whether or not the threshold value judgment condition has been satisfied; a data storage unit for storing the transmission-use data if the threshold value judgment condition has been satisfied; and a tag identifier transmission-necessity judgment unit for determining whether or not the identifier of the tag per se is to be transmitted in order for the unit to participate in an anti-collision process carried out between the electronic tag and R/W as a necessary process prior to transmitting data to the R/W in accordance with condition data sent from the R/W after storing the transmission-use data. - View Dependent Claims (9)
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Specification