JP2006092362A - Radio tag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide radio tags which makes work of prescribed processing to dispose IC chips easy, enables to perform the work in a short period and certainly, and improves security to data stored in the memory of IC chips after disposal. <P>SOLUTION: After prescribed processing for disposing the IC chips of radio tags which are constituted such that the IC chip and an antenna are fixed to a substrate and outputs the radio wave modulated by the information stored in memories to the outside when the radio tags receives radio wave modulated by prescribed command from the outside, the inspection medicine prepared near the IC chips and stored in a storing means which stores the inspection medicine prepared near the IC chips and whose color changes is made contact with air, and color of inspection medicine changes. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a wireless tag that, when receiving a radio wave modulated with a predetermined command from the outside, modulates information stored in a memory into a radio wave and outputs the radio wave to the outside.

  In recent years, it has been proposed to manage articles using a wireless tag such as an RFID tag. For example, the management number associated with the article to which the wireless tag is attached is stored in the memory of the wireless tag, and when necessary, the management number is read out from the memory by the wireless tag reader, so that the article stored in the shelf is stored. Inventory management, management for searching for a desired article from many articles, and the like are performed.

  As described above, the management number associated with the article is stored in the wireless tag. In addition, the amount of data that can be stored in the memory of the wireless tag is large compared to the amount of data that can be represented on the barcode used for conventional article management, so it is more than the data such as the article management number. The data can be stored. When discarding such a wireless tag, because a lot of information is stored in the internal memory, it is discarded after ensuring that data cannot be read from the memory so that information is not leaked to a third party. It is desirable to do.

  However, in order to check whether data can no longer be read from the memory of the RFID tag to be discarded, it is necessary to perform a reading operation to check whether the data can be read by the RFID tag reader. Since it is conceivable that a large number of wireless tags are discarded, if the reading operation has to be performed again in this way, the operation for destroying the wireless tags becomes complicated and takes time.

  The present invention has been made in view of the above circumstances, and its purpose is to facilitate an operation for performing a predetermined discarding process on an IC chip, and can be performed reliably in a short time. An object of the present invention is to provide a wireless tag with improved security for data stored in the memory of an IC chip.

  The present invention is configured by fixing an IC chip and an antenna to a substrate, and when receiving a radio wave in which a predetermined command is modulated from the outside, a radio tag that modulates information stored in a memory into a radio wave and outputs the radio wave to the outside When a predetermined disposal process is applied to the IC chip, the test agent stored in the storage means for storing the test agent whose color changes by contact with the air provided in the vicinity of the IC chip comes into contact with the air. However, the color of the test agent changes.

  According to the present invention, it is possible to easily perform a process for performing a predetermined discarding process on an IC chip, and to perform it reliably in a short time, and to improve the security for the data stored in the memory of the IC chip after the discarding. A wireless tag can be provided.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a view of a wireless tag 1 that is an RFID tag, for example, as viewed from above. The wireless tag 1 is a paint that changes its color when it comes into contact with a tag antenna 2, an LSI chip 3 that is an IC chip, and air provided on the lower side of the LSI chip 3 from a rectangular loop coil or the like. A test agent storage portion 5 (not shown in this figure), which is a storage means for storing the test agent, is formed integrally with the substrate 4. The test agent is colorless when sealed in the test agent storage unit 5, but changes to, for example, red when it comes into contact with air.

  FIG. 2 is a diagram showing a cross section taken along line AA in FIG. The LSI chip 3 is fitted into the concave portion of the substrate 4 above the inspection agent storage portion 5, and the tag antenna 2 is disposed on the convex portion of the substrate 4. The test agent storage unit 5, the LSI chip 3, and the concave side surface of the substrate 4 are fixed by, for example, an adhesive.

  The strength of the storage wall for hermetically storing the test agent in the test agent storage unit 5 is, for example, when the LSI chip 3 of the wireless tag 1 is sandwiched with pliers or the like, the force is applied to the grip of the pliers, and the LSI chip 3 is damaged. The LSI chip 3 is in a damaged state when the storage wall of the test agent storage unit 5 is damaged so that only the storage wall of the test agent storage unit 5 is damaged and the LSI chip 3 is not damaged. It is strong.

  FIG. 3 is a diagram showing a control configuration of the LSI chip 3 of the wireless tag 1. The LSI chip 3 rectifies and stabilizes the modulated radio wave received by the tag antenna 2 to demodulate the modulated radio wave and transmit it to the control unit 12 by supplying power to each part of the LSI chip 3. The demodulator 13, the modulator 14 that modulates the data transmitted from the controller 12 and transmits the data to the tag antenna 2, the data demodulated by the demodulator 13 is written to the memory 15, and the transmission data is read from the memory 15 The control unit 12 and the memory 15 are sent to the modulation unit 14. In the memory 15, a unique wireless ID area for storing a unique wireless ID (RFID) assigned and set by the manufacturer at the manufacturing stage of the wireless tag 1 and a user area in which a user can write arbitrary information are formed. Has been. In this user area, for example, data indicating a management number used when the wireless tag 1 is pasted to manage an article and data such as confidential data necessary for management are stored.

  When the control unit 12 of the wireless tag 1 configured as described above receives a radio wave in which a predetermined command is modulated from the outside via the tag antenna 2 and the power generation unit 11 operates to supply power, The received radio wave is demodulated, the data stored in the memory 15 is read, the read data is modulated, and output from the tag antenna 2 to the outside.

  Next, an operation when the wireless tag 1 configured in this way is subjected to a process for discarding will be described. As processing for discarding, processing is performed in which the LSI chip 3 of the wireless tag 1 is pinched with pliers and the data stored in the memory 15 of the LSI chip 3 cannot be read.

  The operator puts the LSI chip 3 of the wireless tag 1 to be discarded with pliers and applies force to the grip of the pliers. At this time, if the force applied by the operator is weak, the LSI chip 3 is not damaged, and the test agent storage unit 5 is not damaged. For this reason, since the test agent stored in the test agent storage unit 5 does not come into contact with air, it remains colorless.

  On the other hand, when the force applied to the grip of the operator's pliers exceeds a predetermined force, the storage wall of the test agent storage unit 5 together with the LSI chip 3 is damaged. As a result, data cannot be read from the memory 3 of the LSI chip 3 and the test agent stored in the test agent storage unit 5 comes into contact with air and turns red.

  Therefore, when the worker performs processing for discarding the LSI chip 3 of the wireless tag 1, the color of the test agent changes that data cannot be read from the memory 15 of the LSI chip 3 of the wireless tag 1. This can be confirmed reliably. For this reason, the operator can perform processing for discarding the wireless tag 1 by an easy operation of sandwiching the LSI with pliers and applying a predetermined force or more, and in a short time. As described above, since it is certain that the data cannot be read from the memory 15 of the LSI chip 3, the wireless tag 1 is discarded, so that the security for the data stored in the memory 15 can be improved.

  In addition, since the worker can perform an easy work and a process for discarding the LSI chip 3 of the wireless tag 1 in a short time, when the wireless tag 1 is discarded in large quantities, the worker's The effort is greatly reduced.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying constituent elements without departing from the scope of the invention in the implementation stage.

The figure which looked at the radio | wireless tag in embodiment of this invention from the upper side. The figure which shows the AA cross section in FIG. 1 in the embodiment. The figure which shows the control structure of the LSI chip in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Wireless tag, 2 ... Tag antenna, 3 ... LSI chip, 4 ... Board | substrate, 5 ... Test agent accommodating part, 12 ... Control part, 15 ... Memory

Claims (1)

In a wireless tag configured to fix an IC chip and an antenna to a substrate and receive a radio wave in which a predetermined command is modulated from the outside, the information stored in the memory is modulated into a radio wave and output to the outside.
A storage means for storing a test agent whose color changes by contact with air is provided near the IC chip,
The wireless tag according to claim 1, wherein when the IC chip is subjected to predetermined disposal processing, the test agent stored in the storage unit comes into contact with air, and the color of the test agent changes.

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