WO2005106782A1 - Ic tag and dishonest taking prevention device using ic tag - Google Patents

Ic tag and dishonest taking prevention device using ic tag Download PDF

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Publication number
WO2005106782A1
WO2005106782A1 PCT/JP2005/007860 JP2005007860W WO2005106782A1 WO 2005106782 A1 WO2005106782 A1 WO 2005106782A1 JP 2005007860 W JP2005007860 W JP 2005007860W WO 2005106782 A1 WO2005106782 A1 WO 2005106782A1
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WO
Grant status
Application
Patent type
Prior art keywords
ic tag
switch
tag according
sensor
substrate
Prior art date
Application number
PCT/JP2005/007860
Other languages
French (fr)
Japanese (ja)
Inventor
Takashi Hasegawa
Isao Sakaguchi
Shousuke Matsuura
Masayuki Hosogi
Original Assignee
Ic Brains Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/073Special arrangements for circuits, e.g. for protecting identification code in memory
    • G06K19/07309Means for preventing undesired reading or writing from or onto record carriers
    • G06K19/07372Means for preventing undesired reading or writing from or onto record carriers by detecting tampering with the circuit
    • G06K19/07381Means for preventing undesired reading or writing from or onto record carriers by detecting tampering with the circuit with deactivation or otherwise incapacitation of at least a part of the circuit upon detected tampering

Abstract

To enable an IC tag having been removed to be read and to facilitate visual confirmation of a dishonesty. An inlet (5) is formed by joining, on a substrate (4) such as a PET film, an antenna coil (2) and a fracture switch (3) to an IC chip (1). The fracture switch (3) is constructed so as to break and shutoff a circuit when an external force greater than a predetermined level is applied to the switch. The inlet (5) is constructed such that an adhesive agent (a) is applied to the outer periphery of the upper surface of the substrate (4) and to the top surface of the fracture switch (3), the upper surface of the substrate is covered with a surface seal (6), the adhesive agent (a) is applied to the entire lower surface of the substrate, and the lower surface is supported by release paper (7) which is treated with silicone for release. The inlet (5) is peeled off from the release paper (7) and adhered to an article etc.

Description

Unauthorized taking-out prevention device using an IC tag and an IC tag

Technical field

[0001] The present invention is substituted secretly prevention function IC tag, damage detection function IC tag, a write-once function with IC tag, outgoing variable cycle active IC tag, and a prevention device out has illegally using IC tags.

BACKGROUND

[0002] IC tag performing solid recognition without contact can not be rewritten because data is written in the manufacturing process in ROM, high authenticity is guaranteed.

Moreover, anti-counterfeiting securities such as banknotes because it can be attached to various articles, personal authentication order to ensure room access room management, manufacturing, distribution, wide such article management in the course of such sales, use in the field It is expected to, Ru.

[0003] although these IC tags can be attached to various articles, you can also easy simply reattached to other articles.

Also, peel off the seal surface she can also easily be replaced laminated to other seals. Therefore, for example, article management Nio, Te or replacement of the IC tag and inexpensive IC tag of items of expensive goods, what fraud Do not paste the peel was IC tag from genuine goods to fake products made that there is a risk.

[0004] In order to solve this problem, JP 2000- the 151,459 discloses, prevent substituted secretly the IC tag as IC and connecting portions of the antenna Any attempt to remove the IC tag from the article is destroyed It is how to have proposed!, Ru.

However, in this method because the cause is disconnected the IC and antenna, it becomes unreadable ID of the removed IC tag.

For this reason, can not be tracked history information if you want to use in tracer Piriti the IC tag that nag at Chikarari if the original of the IC tag do not know what the was the the one, have not be able to know whether fraud has been carried out at any time .

In addition, there are a ヽ such it is possible to detect the fraud and Tsutemina!, Read the ID using the difficulty fitting reader Z writer is to make sure the swap is visually, cormorant problem.

Patent Document 1: JP 2000- 151459 JP

[0005] By the way, the food and I 匕学 chemicals, or above a certain temperature is in, such as precision parts, and limit outside of the shock, there is to lose the commercial value and deterioration of quality.

Therefore, transport of the articles 'when storing the vehicle' must always be kept within the specified temperature and vibration in the cabinet.

However, the temperature in the car 'warehouse outside temperature and sunlight conditions, changes due to opening and closing frequency of the door.

The vibration of the vehicle is changed by way of road conditions and driving.

Therefore, by keeping records by measuring the temperature and vibration at every predetermined time copy and paste the IC tag with a temperature sensor and a vibration sensor in the goods and car 'box, though also ensure the quality control of the article can do.

For example, if track recorded content at the stage of completion of the transportation 'storage, the coercive sauce such ChikaraTsuta defective (e.g. temporarily food temperature had risen in a refrigerator at failure) can be detected within the specified.

Also, when detecting a defective product by analyzing the force was a problem in the management of any stage, can help measures thereafter.

[0006] IC tag used in the temperature control, the ambient temperature, for example - 20 ° than active tags with a built-in battery becomes inoperable and C equal to or less than, the operating power by receiving electromagnetic waves even reader Z writer force towards the passive tags are preferred.

Further, since the traveling vehicle and is difficult upon communication costs for communication in a sealed compartment reader Z programmer or an external bring a lot of communication devices also Kakeryokuru, online method of transmitting retrieves the measurement results in real time than even, it is preferable find offline system to retrieve the measurement results after recorded in the memory of Itsutan tag.

However, in the case of the off-line system, a time lag occurs because the measurement is to check and remove the recorded contents after you have completed, or to tamper with the recorded contents in the meantime, it is possible to or fake.

[0007] 'is performed by sharing a separate skill in the art storage, transport' general transport of goods temperature management and vibration control during storage is carried out each of skill in the art with responsibility.

For this reason, in charge of skill in the art every time the transport 'storage is completed, the goods and the car, remove the tag that was attached to the refrigerator submitted to the requester, the proper temperature management and vibration management is requester reads the recorded contents check whether it was done in, it would be to impose some kind of penalty if there is a problem.

ID of the IC tag can not be rewritten, because the high authenticity is guaranteed, can not be the first to the article or the car, that a changeover pasted tag in the refrigerator to another tag with different recorded content.

Instead, after removal of the tag, it can be tampered with the contents recorded before to be submitted to the requester.

Also, the way remove the tag affixed to an article or vehicle 'in-compartment, it is also possible to forge the recorded contents transferred to a good location temperature state and vibration conditions.

[0008] In addition, if a built-in writable memory in the IC tag, raw materials, producer, production date, or can record information such as the expiration date, (tracking of production history) traceability of food is possible become.

As a result, the consumer is able to know the history information of food by using, for example, built-in reader to the store, will be able to purchase products with confidence.

[0009] The history information of food production, distribution, each skilled in the art each stage of such sales will be recorded separately, in the present circumstances can also be tampered with skill in the art after the information to which the trader was recorded. Therefore, for example, sales information, such as raw materials and producer has recorded expiry date store there is a risk of fraud, such as selling goods and falsification is done.

[0010] In addition, active tags Automatic transmission to ID, and you perform gated such entry control for controlling the opening and closing of the electric lock Ya automatic door attached to a person or moving object, communication Te ratio base to Nosshibu type distance operations such as sit force to long because the interrogator is not required, it is useful, for example, when both hands are blocked by luggage.

On the other hand, since the communication distance is long open gate at an earlier can have a position timing of detecting the ID is the fast tool people or moving objects is far away stage, ensuring security is difficult.

[0011] On the other hand, a built-in battery so active tag emits its own ID, and require a battery replacement or charging.

Furthermore, transmits the ID with a period which is determined because Ji Arakaka, so when shortening the outgoing cycle battery drain increases, calling period of normally set quite long, for example, 3 to 30 seconds. Therefore, since a long time that does not transmit the ID delay the timing of detecting the ID, Do not open the gate even if people and move animals near with ヽ, sometimes.

[0012] Further, in pos- sibly distribution process to manufacture power sales by the IC tag for exchanging data wirelessly between the reader Z writer added to the product to install an antenna with gate entrance, such as warehouses and stores get the inventory information and the entry and leaving information in real time, it is possible to prevent the unauthorized taking out of goods.

IC tag following the long-wave band 135 kHz, 13. shortwave band 56 MHz, 2. but communicates with the reader Z writer using a micro wave band of 45 GHz, if there is metal between the IC tag and the reader Z writer field because and radio waves is absorbed by the metal, even that which hardly communicate in any band.

[0013] 135 kHz when: diffract magnetic field leaves the gap of the metal, also the communication distance is extremely short can communicate.

13. For the case of a 56MHz band is current generated in the metal flow in a direction to cancel the magnetic field of the IC tag, IC tag can not be obtained almost an electromotive force.

2. In the case of 45GHz band can not communicate with shift tuning of the antenna.

Also, 2. Telecommunications of 45GHz band as utilized in a microwave oven, since is well absorbed in water, does not pass through the human body.

Therefore, when covering a portion of the IC tag such as metal or hands, such as an aluminum sheet, a problem easily gate no longer able to communicate can pass occurs.

Disclosure of the Invention

Problems that the Invention is to you'll solve

[0014] A first problem of the present invention is to Sho resolution, because the conventional method would be disconnected an IC and an antenna, will not be able to read the IC tag, the unauthorized confirmed difficulty in visually , and the first invention enables the reading of the removed IC tag, it has been made in order to facilitate an inaccurate certification of visually. [0015] The second problem is that, measurement results!, ​​In the case of the offline method to retrieve later recorded in the memory of Tsutan tag, because the time lag occurs, falsification and fabrication is possible of the recorded contents in the meantime is a point to be the second invention, than it was also made for the purpose of preventing fraud, such as difficulties in to tampering or forged of recorded contents removal of a tag affixed to the article or vehicle 'box .

[0016] A third problem is that when utilizing the IC tag traceability is the point where there is a risk of being falsified at a later stage information recorded in the previous stage, the third invention, the IC tag It has been made for the purpose of protecting the recorded information so as not to be tampered with later.

[0017] A fourth problem is that conventional active tag is a point difficulty instrument gating perform gate control is uncertain at an appropriate timing, the fourth invention, the active to perform reliably gate control It has been made with the aim of providing a tag.

[0018] The fifth problem is in that it can not communicate with covering an IC tag with metal and hand, the fifth invention, prevents unauthorized taking out of the IC-tagged article by detecting the communication jamming due to metals and hands that it has been made with the purpose.

Means for Solving the Problems

[0019] Accordingly a first aspect of the present invention, by inserting a switch for breaking the circuit by breaking the above external force given is applied to the data input circuit IC, the input means and to enter switch for entering the state of the switch state transmission means for transmitting in addition to response signals to the most important feature in that it comprises the IC tag.

[0020] Measurement second invention, for measuring and transmitting means for transmitting the ID at regular outgoing cycle active tag, a receiving means for receiving an outgoing wave of the interrogator, a transmission radio wave received voltage of the received interrogator and means, the most important feature Rukoto a changing means for changing an outgoing period according to the measured reception voltage.

[0021] Third invention includes a first communication means for IC tag through an antenna and a gate installed at the gate to communicate, a second communication means for the antenna each other and installed in the gate to communicate, the first when the communication unit detects the incommunicable is a switching means for switching to the second communication means, further comprising a notifying means you notifying an alarm when the second communication unit detects the incommunicable after switching the most important feature. [0022] Fourth invention, the AZD varying with the analog input terminal to be connected to the sensor incorporated in the IC, to connect the switch to break the predetermined or more external force to the analog input terminal is applied, the switch is damaged when is the most major feature that disables inputs from further sensors.

[0023] Fifth invention, peelable and label which is attached on the surface substrate of the inlet, and switch which is set to break with peeling the label, a memory write is inhibited when the switch is broken the most important feature in that it comprises an.

Effect of the invention

[0024] The first invention, since detecting the exchange pickpocket by pressurizing with a switch for breaking the circuit by breaking the predetermined or more external force is applied to the IC, detects the replacement medicine such compromising IC tag original function become able to. Therefore, reading about hindrance of the removed IC tags is no longer at all. Further, since the ink liquid in the switch breaks adheres to the periphery of the switch to leak, so the swap of the IC tag can be easily visually confirmed.

[0025] The second invention detects the removal of the tag by connecting the switch to break the predetermined or more external force is applied to the analysts port grayed input terminal of AZD converter input of the sensor or colleagues when detecting remove because disabling, it can not be rewritten illegally recorded contents after removal of the tag.

Moreover, it not can also be recorded by transferring the removed tags elsewhere.

[0026] Third invention, switch is broken when peeling off the labels of the inlet, since the switch is broken writing to the memory is inhibited, it becomes possible to control Ri by the timing of the write-once the release of the label . Therefore, the information recorded at that stage is to be reliably protected when peeled labels when the information is confirmed.

[0027] Fourth invention, since changing the outgoing periodic ID for active tag according to outgoing radio wave reception voltage of the interrogator, ing as understood proximity of the active tag by the originating period of ID.

Therefore, it allows the gate control at an appropriate timing.

In addition, since only the transmission cycle of the ID is shortened when approaching to the interrogator, waste is eliminated in the battery consumption of many active tag be spend at a distance most of the time. [0028] Fifth invention, since when the communication antenna and the IC tag installed in the gate becomes impossible switched to communication between antenna, it becomes possible to reliably detect the communication jamming due to the metal and hands.

Further, since the notification alarm if unable to communicate with the antenna each other, it becomes possible to reliably detect the illegal carrier of the IC tag inherent products.

BEST MODE FOR CARRYING OUT THE INVENTION

[0029] The following describes embodiments of the first invention.

[0030] Figure 1 and Figure 2 shows a plan view and a sectional view of the swap prevention function IC tag embodying the first invention.

In the figure, mainly 150kHz or less, or 13. Using the frequency band of 56MHz illustrates an example of an IC tag of an electromagnetic induction type! /, Ru.

Swap prevention function IC tag in sheet form, to form an inlet 5 bonded to the antenna coil 2 in the IC chip 1 break switch 3 on the substrate sheet 4, such as a PET film. Break switch 3 is decreased to the structure to cut off the circuit by breaking the predetermined or more external force is applied.

Inlet 5, by applying an adhesive a the periphery and breaking switch 3 of the substrate sheet 4, was coated over its surface seal 6, it silicon by applying an adhesive a is the entire back surface of the substrate sheet 4 bonding the release paper 7 that has been subjected to release treatment, thereby constituting the IC tag.

Peel off the the release paper 7 to attach an IC tag such as an article.

[0031] Figure 3 and Figure 4 shows an enlarged plan view and a sectional view of a breaking switch.

Break switch 3, the membrane 31 is formed on the substrate 4 using thick film printing technology, and the film to form a bag-shaped liquid storage layer 33 thereon in Bruno Kkingu 32 of brittle material, therein add ink b of conductivity.

The electrode 34 is arranged at both ends of the liquid storage layer 33, to connect to the IC chip 1 via lead 35.

Thus the good to the substrate 4 you put weakening line c in broken lines in the form of such rough force Ji because for example X mark, when you peel off draw inlet 5, the switching of the weakening line c and the substrate 4 is pulled Re width expanding to ensure breaking of the substrate 4 and the break switch 3 integral.

The weakening line c is summer so that the width crispness pulled vertically and horizontally in any direction is enlarged.

[0032] Further, it is preferable to ensure the adsorption of ink b is subjected to dot formation of any surface forces 卩E the entire surface of the peripheral or the substrate 4 of the break switch 3 of the substrate 4 surface.

In addition to the surface processing, or applying a coating material to adsorb ink b to the substrate 4 surface, even taped such as paper or cloth to adsorb ink b Yo,.

Thus, the ink liquid b leaked during fracture adheres widely diffused in the periphery of the substrate 4 while traces, the break switch 3 becomes to easily visually confirm that broken.

[0033] breaking switch 3, as shown in FIG. 5, even when energized by connecting the ends of the liquid storage layer 33 a conductive cutting easily fine line d!,.

Alternatively, the membrane 31 and the packing 32 may be energized to form a metal foil such as aluminum.

When configuring in this manner break switch 3 by a thin line d and the metal foil, ink b within the liquid storage layer 33 is Arebayo in what usually is not necessary conductivity, and, also without ink the Eki貯 built layer 33 may be omitted. When omitting the liquid storage layer 33 is directly connected thin lines d and a metal foil to the lead wire 35.

[0034] FIG. 6 shows a block diagram of an IC tag embodying the first invention.

The IC tag is to connect the antenna coil 2 to the antenna connections of the IC chip 1, it is configured to connect the breaking switch 3 to the data input of the IC chip 1.

IC chip 1 includes a rectifier circuit 11 connected to the antenna coil 2, a demodulation circuit 12, modulation circuit 1 3 and the clock circuit 14 forces become analog circuit unit, and a digital circuit portion consisting of CPU15 and memory 16.

[0035] swap prevention function IC tag in the configuration as above, the reader Z when writer 8 modulates a read signal of the ID is applied to the antenna coil 9, Ann tag side induction field is generated Tenakoiru 2 the induced voltage is generated in the.

The induced voltage rectifier circuit 11 is the operation power by rectifying, the clock circuit 14 generates a clock for IC synchronization using the frequency. When from the IC circuit in the power and clocks which are supplied, while synchronizing the demodulation circuit 12 is a clock demodulates the read signal received from the reader Z-writer 8, ID of the read signal from the memory 16 by CPU15 collapsed prayers reading, the read ID modulation circuit 13 transmits from the antenna coil 2 in modulation.

At this time, CPU 15 performs input processing of break switch 3 adds the ID of the state of the input switch transmits to the reader / writer 8. That executes an input command to the IO port (not shown) between the break switch 3 and CPU 15, reads the state of breaking switch 3 at that time, which was added to the ID to send to the reader Z writer 8.

[0036] In the first swap prevention function IC tag embodying the present invention the above-described configuration, if the replace the IC tag such as other articles, and you peel off pull an IC tag, i.e. more than external force given action Then, cut the width of the lines of weakness c of film-like substrate 4 is placed in a pulled and the substrate 4 is expanded.

Thus, as shown in FIG. 7, the tear force acts on any one of the weakening lines c, breaking sweep rate Tutsi 3 breaks.

At this time, ink b is attached to diffuse widely conductive ink b is the substrate 4 front surface of the break switch 3 near to leakage placed in.

Therefore, it is possible to detect visually that the IC tag is peeled prior to reading the ID reader Z writer 8.

Further, the ink b of conductive placed in leaks breaking switch 3 is turned off. Therefore, it is possible to detect that the IC tag is peeled off in to identify the state of the switch to be added when reading the ID reader Z-writer 8 side.

[0037] liquid when the break switch 3 connecting both ends of the storage layer 33 by a thin line d, as shown in FIG. 8, peel the IC tag and breaking switch 3 to break, normal ink liquid b was placed in There ink b is attached to the substrate 4 surface near break switch 3 leaks. At the fine line d is disconnected at the same time, break switch 3 is turned off.

[0038] Further, by peeling only the surface seal 6 of the IC tag even if Kaeyo bonded to another surface seal 6, breaking switch 3 is turned off and broken torn between the substrate 4 and the surface seal 6 I link liquid flows out. As a result, similarly to the case to be made to peel off pull the entire IC tag from the article, the peeling of the surface seal 6 can be detected.

Do the ink is a shorthand for the liquid storage layer 33, from, but not visible in eyes peeled for IC tags and the surface seal, breaking switch 3 by cleavage of the fine wire d or metal foil is turned off, the reader Z writer peeling can be detected at 8 side.

By arranging the circuit breaking switch thin line to seal instead doors and drawers, it can detect unauthorized opening of more doors to the disconnection.

[0039] Next, describes embodiments of the second invention.

[0040] breakage detection function IC tag embodying the second invention, as shown in FIGS. 1-2, breaking switch 3 and the antenna coil 2 in the IC chip 1 as with the swap prevention function IC tag of the first aspect of the present invention the bonded on the substrate 4, such as a PET film to form an inlet 5.

[0041] Figure 9 shows a block diagram of a failure detection function IC tag embodying the second aspect of the invention.

Breakage detection function IC tag, an antenna coil 2 is connected to the antenna connections of the IC chip 1, it is configured to connect the breaking switch 3 in series with the sensor input unit.

IC chip 1 includes a rectifier circuit 11 connected to the antenna coil 2, the demodulation circuit 12, the modulation circuit 1 3, a data transmitting and receiving unit of the analog consisting of a clock circuit 14, CPU 15, memory 16, digital consisting Α / Ό strange 7 a data processing unit, and a sensor input unit of the analog consisting Sensaan flop 18 and the sensor 19 between which breaking switch 3.

[0042] the sensor 19 resistance time sensor, the thermoelectromotive force or platinum resistance Ya thermistor temperature sensing element of the thermocouple to measure the time using and resistance change with the progress of the metal acid I spoon temperature sensor for measuring the temperature by using such anti-change, the resistance change and the capacitance change of the organic high molecular material, a humidity sensor for measuring the humidity by utilizing such change in resistance of the ceramic material, the voltage change of the piezoelectric ceramic , the resistance change of the piezoresistive element, and the like vibration sensor utilizing an electrostatic capacity change or change in resistance of the material bonding structure is loosened due to vibration of the displacement electrode to measure the vibrations.

Time sensor, and left iron, copper, aluminum, a metal foil having an electric resistance varying with the progress of Sani匕 such as tin in an oxygen atmosphere at a constant concentration, elapse and measuring the electrical resistance of the metal foil such as those to detect the time is considered.

[0043] Since the damage detection function IC tag of the second invention is broken sweep rate Tutsi 3 between the sensor amplifier 18 and the sensor 19 is inserted, when trying to peel pull the inlet 5 is broken switch 3 to break, sensor bond line between the amplifier 18 and the sensor 19 is disconnected.

Therefore, the resistance becomes infinite, AZD-varying conversion value when rupture switch 3 to break the full scale (maximum value).

[0044] Hereinafter, that describes the operation of the failure detection function IC tag with reference to the flowchart of FIG. 10.

First, the reader Z writer 8 is marked pressurizing the AC voltage in the antenna coil 9 modulates the command signal, transmits a command signal to the IC tag (step 101).

At this time, the induced voltage is generated in the antenna coil 2 of the tag-side induction field is generated. The following operation every time receiving the electric field supplied from the outside at every predetermined time, sufficient electrical field strength is obtained, the induced voltage is performed in a stable point.

Next, IC tag receives the command signal, the induced voltage rectifier circuit 11 is the operation power by rectifying, the clock circuit 14 generates a clock for IC synchronization with its frequency (step 102).

Next, when power is supplied and the clock to the IC circuit, the demodulation circuit 12 is similar in synchronism with a clock for demodulating a command signal received from al reader Z writer 8 (step 103).

[0045] Next, CPU 15 is converted into digital data by AZD strange ^ ^ 17, and inputs the measured value of the sensor 19 is amplified by the sensor amplifier 1 8 (step 104).

Then, check the measurements CPU15 entered (step 105), when the full-scale without an input operation as the inlet 5 is peeled off, the process is terminated. Thus, so far the history data since the history storage in the memory 16 at step 109, 110 after disappears is cryopreserved. Therefore, it can not be rewritten illegally recorded contents after removal of the tag.

[0046] Full-scale a Do! / Reads the ID code from the CPU 15 memory 16 when (Step 106), the measurement value input in the ID code and step 104 read modulation circuit 13 modulates, ID code by adding the measured values ​​to be transmitted from the antenna coil 2 to the reader / writer 8 (Sutetsu flop 107).

Next, it is determined whether the provisions in level measurements CPU15 entered (step 108), time series measurements entered to match the clock data included in the command signal as normal data if defined within the level sequentially history stored in the memory 16 (step 109).

If not defined within the level, and history stored in the memory 16 in chronological order the measurement value inputted together with clock data included in Likewise command signal as an abnormal data (step 110

) O

Accordingly, since it is stored only in the force S memory 16 abnormal data, reading efficiency and enhancement of historical data, ChikaraTsuta of defect detection speed such kept define the level is increased.

Also, storage of historical data can also be reduced.

The measurement values ​​of the sensor 19 if the vibration data, previously set normal waveform pattern, the same time of mismatch by matching waveform pattern of the measured vibration data at all times to make it as abnormal data.

[0047] Next, a description will be given embodiment of the third invention.

[0048] Figure 11 and Figure 12 shows an internal plan view and a cross-sectional view of a write-once function IC tag embodying the third invention. Further, FIG. 13 illustrates an external plan view of a write-once function IC tag.

In the figure, mainly 150kHz or less, or 13. Using the frequency band of 56MHz illustrates an example of an IC tag of an electromagnetic induction type! /, Ru.

Write-once function IC tag, the number breaking switch 3 in accordance with the antenna coil 2 and the number of channels in the IC chip 1 by bonding on the substrate 4, such as a PET film to form an inlet 5. In the Figure shows an example of an IC tag 3 channels organized! /, Ru, but can be joined breaking switch 3 any number by the number of channels.

Inlet 5 covers the upper surface with a surface seal 6 by applying the adhesive a in the outer peripheral and the top surface of the break switch 3 of the substrate 4 a top surface, a release-treated silicon lower surface by applying an adhesive a in entire lower surface supporting the release paper 7 that has been subjected.

The inlet 5 is peeled off from the release paper 7 is attached such to the article.

[0049] surface seal 6 forms form a number of labels 61 according to the broken switch 3 is subjected to punching force 卩E is internally provided with break switch 3 during the label 61 and the substrate 4.

Break switch 3, a structure in which damage to a predetermined or more external force is applied, to secure the bottom surface to the substrate 4 of the inlet 5, to adhere the top surface on the back side of the label 61. Accordingly, when peeling off the label 61 affixed to the bottom surface of the substrate 4, breaking switch 3 to stick the top surface on the back side of the label 61 is broken reliably pulled upward.

[0050] breaking switch 3, as shown in FIGS. 4-5, by forming a surface lens 31 on the substrate 4 using thick film printing technology, coated thereon in the packing 32 of the brittle material bag forming a Jo liquid storage layer 3 3, add ink b conductivity therein.

The electrode 34 is arranged at both ends of the liquid storage layer 33, to connect to the IC chip 1 via lead 35.

As a result, when you peel off pull the label 61, breaking switch 3 is damaged pulled

, Leads 35 for connecting to the IC chip 1 is disconnected.

In addition, mark, such as when you peel off the label 61, for example, "inspection completed" or "pass" is exposed. Accordingly, it is to mow min visually article attached to inlet 5 also is one that was tested.

[0051] breaking switch 3, it may be energized by connecting the ends of the liquid storage layer 33 of a conductive thin wire.

Alternatively, the membrane 31 and the packing 32 may be energized to form a metal foil such as aluminum.

[0052] FIG. 14 shows a block diagram of a write-once function IC tag embodying the third invention.

Write-once function IC tag is to connect the antenna coil 2 to the antenna connections of the IC chip 1, it is configured to connect the breaking switch 3 to the data input channels IC chip 1.

IC chip 1 includes a rectifier circuit 11 connected to the antenna coil 2, a demodulation circuit 12, modulation circuit 1 3 and the clock circuit 14 forces become analog circuit unit, and a digital circuit portion consisting of CPU15 and memory 16.

[0053] Data input channels is plural, breaking switch 3 is connected to a one-to-one correspondence with each data input channel.

Impedance data input channel when the break switch 3 is damaged Ri Do infinite, the input signal at that time is at a high level.

Banks of different memory 16 for each data input channel is assigned to one-to-one.

Memory 16 is managed in units of banks having a constant volume, select the bank to be an access request is generated, and summer to access only that bank performs bank switch. Bank switch may be performed hard, soft either method.

[0054] Hereinafter, with reference to the flowchart of FIG. 15 illustrating the operation of the write-once function IC tag.

First, the reader Z writer 8 is marked pressurizing the AC voltage in the antenna coil 9 modulates the command signal, transmits a command signal to the IC tag (step 201).

At this time, the induced voltage is generated in the antenna coil 2 of the tag-side induction field is generated. The following operation each time receiving an external force field supply sufficient electric field strength is obtained, the induced voltage is performed in a stable point.

Next, IC tag receives the command signal, the induced voltage rectifier circuit 11 is the operation power by rectifying, the clock circuit 14 generates a clock for IC synchronization with its frequency (step 202).

Next, when power is supplied and the clock to the IC circuit, the demodulation circuit 12 is similar in synchronism with a clock for demodulating a command signal received from al reader Z writer 8 (step 203).

Next, it analyzes the command signal CPU15 is demodulated (step 204), when the command signal is a command included can write enter the write operation of history data, when the Talia command enters the erase operation history data.

[0055] Next, a description will be given of the write operation of historical data.

First, CPU 15 selects the data input channel of interest, and is connected to the channel, the input processing of break switch 3 performs the Ru (step 205).

Then, check the input signal (step 206), when the high level does not write operation as a label 61 is peeled off, the process is terminated.

Roh, and if not Ireberu select a bank of memory 16 of interest, writes the history data included in the command signal to that bank (Step 207).

Then, a response signal added with the ID code modulation circuit 13 modulates, and transmits from the antenna coil 2 to the reader Z writer 9 (step 208).

[0056] Next, a description will be given of the erase operation of historical data.

First, CPU 15 selects the data input channel sequentially connected to all the channels, the input processing of break switch 3 performs the Ru (step 209).

Then, check the input signal (step 210), all the input signals are at a high level all the labels 61 are clear all the history data stored in the banks of the memory 16 as having been peeled off (Step 211 ).

Do at a high level, when are all labels 61 is yet peeled !, it! /, Without an erase operation as, the process ends.

As a result, it is possible to recycle the write-once function with IC tag after use.

[0057] write-once function IC tag of the third invention, as shown in FIG. 16, separated from the inlet 5 the labels 61 one by one at each stage of traceability, breakage detecting section break switch 3 corresponding than this There corrupted by this writing to the memory 16 of the corresponding address is inhibited, the history data is protected at each stage of traceability, controllably the timing of the write-once by having this functionality with the peeling of the label 61 Become.

Further, so prevent falsification of historical data on traceability each step in this that it is independent write-once area of ​​the memory 16 by the peeling detection unit there are multiple. Incidentally, is provided at all times rewritable realm in the memory 16 so that it can be conventional and similar use, it is in FIG.

[0058] Further, as shown in FIG. 17, so as to control the number of corrupted detection unit to be used to devise an adhesive or the wiring pattern of the label 61, Ru.

FIG. 17 (a), 3 a first channel of the channels is labeled 61 disposed on the outer peripheral portion as a normal peeling detection antenna, cutting a second, even peeled label 61 of those third channel present wiring Ru using it! / ヽ such adhesives.

Thus the second, the memory 16 at the address corresponding to the third channel has a rewritable.

FIG. 17 (b), 3 the portion of the channel there label 61 is made peelable. FIG. 17 (c) 3 peelable portion of the channel there label 61 is turned only a present odd one place. [0059] Next, a description will be given embodiment of the fourth invention.

[0060] Figure 18, outgoing variable cycle active IC tag T shown a block diagram of a transmitter variable cycle active IC tag embodying the fourth aspect of the present invention, to connect to the receiving terminal of the antenna duplexer T1 receiver T2 a frequency synthesizer .tau.3, receiver voltmeter Τ4 force becomes receiving circuit section, modulator Τ5 to be connected to the transmission side terminal, and a transmission circuit unit consisting of a transmitter .tau.6, CPUT7, timer T8, of memory Τ9 control circuit unit in constructed.

[0061] outgoing variable-cycle active IC tag Τ the above configuration, the probe electric wave reader Ζ writer R originates received receiver Τ2 via an antenna duplexer T1, in which the variable frequency oscillator converting the probe wave to a predetermined frequency by combining the station unit oscillation frequency obtained by electrically controlling a certain frequency synthesizer .tau.3.

Probe wave is assigned a different frequency channel for each reader Ζ writer R, it is required to select the desired frequency of the reader Ζ writer R from the time of receiving. Thus, by arranging a plurality of reader Ζ writer R on separate gates to control the outgoing period of outgoing variable cycle active IC tag Τ individually Ru.

[0062] After being frequency converted received voltage meter Τ4 measures the received voltage of the probe wave, and inputs A, a D converted received voltage CPUT7.

CPUT7 determines the outgoing cycle of ID according to the received voltage, and sets the time value of the determined calling period to start the timer T8 hardware or software.

Thus, reading the ID CPUT7 control timer T8 accesses the memory T9 at predetermined time intervals, the read ID and modulation modulator T5, the transmitter T6 Gaa antenna duplexer T1 the modulated ID through to send to the reader Z writer R and.

Frequency outgoing radio waves ID at this time, use a different frequency band than the frequency of the reader Z writer R frequency for each different professional one blanking Telecommunications.

Thus, rubbing 〖monkey as in recognizing the ID of all outgoing variable cycle active IC tag T of ID outgoing radio wave frequency and a common reader / writer R is multiple outbound variable cycle active IC tag T of.

[0063] Incidentally, when the probe wave from a reader Z writer R is temporarily interrupted, CPUT7 maintains the outgoing period immediately before the interruption to stop the updating of the timer T8.

Accordingly, the reader Ζ writer R will be able to temporarily control the outgoing period of outgoing variable cycle active IC tag Τ towards the gate is stopped temporarily probe wave.

Further, when the probe wave from a reader Ζ writer R is interrupted a certain time, CPUT7 return to predetermined calling period by setting the time value because set Ji rough force timer Tau8.

Accordingly, the reader Ζ writer R will be able to reset the outgoing period of outgoing variable cycle active IC tag Τ passing through the gate by a predetermined time stopped probe wave.

[0064] Reader Ζ writer R verifies the validity of the received ID, the outputs a control signal for performing such Gate control to the controller C if OK.

In this case, providing a reference period for measuring the timing of the rough force Ji because gate control outputs a control signal when a match by comparing the calling period of this and ID.

This allows you are sure that the gate control in the proper timing of the gate control.

[0065] In free space, as shown in FIG. 19, the reader Z if writer R is feeding the probe wave originating transmission power Pt (W) is constant, outgoing variable cycle active IC tag T of the received voltage E (V /) is attenuated as the inverse distance d (m) between the reader Z writer R and outgoing variable-cycle active IC tag T.

As a result, outgoing variable cycle active IC tag T (the dl> d2> d3) reader Z writer R in Konzuke ヽ Te distance d becomes shorter as the reception voltage E received by the originating variable-cycle active IC tag T becomes larger (E1 be <E2 <E3).

Outgoing variable-cycle active IC tag T is in inverse proportion outgoing period t of ID by measuring the reception voltage E to the reception voltage E is short (tl> t2> and t3).

Doing shortening operation of the measurement and outgoing period t above the reception voltage E continuously, the position of the so outgoing periodic t and distance d of ID is linearly proportional reader Z writer R outgoing variable-cycle active IC tag T it becomes possible to accurately detect. Therefore, the gate control accuracy is further improved.

[0066] Next, a description will be given embodiment of the fifth aspect of the present invention.

[0067] Figure 20 shows a schematic diagram of illegal carrier prevention device IC-tagged articles embodying the fifth aspect of the present invention.

Illegal carrier preventing device, while the transmitting side of the gate S1, the transmission § antenna S2, S3 and receiving antenna S4, S5 are opposed to the other as a receiver arranged to connect the receiver S7 and transmitter S6 respectively . Also, attach the lamp S8 to display the alarm above the gate S1, connecting the transmitter S6, the receiver S7 and lamp S8 together.

[0068] transmit antennas S2, it sends the read-signal ID to the IC tag S10 that Tsukeka卩 the article S9 that passes through the gate S1, the receiving antenna S4, receives the response signal from the IC tag S10. In this case, for example, ID read signal to ASK modulation scheme, Ru identifying the response signal and the read signal of the modulated and ID with different modulation schemes, such as a response signal to the FSK modulation method Yasukusu.

[0069] transmit antenna S3, sends a test signal for detecting a communication jamming due to metals and hand, the receiving antenna S5, receives the test signal transmitted from the transmitting antenna S3.

Test signal using a different carrier frequency and the read signal of the ID, for example, when the carrier frequency of the read-signal ID and 13. 56 MHz band, using different 2. 45 GHz band with it.

This facilitates the detection knowledge of communication jamming by effectively utilizing the different radio characteristics depending on the frequency band.

Moreover, dividing a frequency band used for a plurality of frequency channels, time division to communicate by switching the frequency of the carrier wave.

This avoids a communication failure caused by radio interference and wide band of the carrier frequency to be used.

The receiving antenna S4, S5 and transmit antennas S2, S3 becomes a loop coil antenna in the case of electrostatic magnetic induction method using a 13. 56 MHz band, in the case of a microwave method using a 2. 45 GHz band is printed flat It was a micro-strip antenna.

[0070] a transmitter S6 receiver S7, the transmitting antennas S2, S3 incorporates an antenna switching circuit (not shown) respectively perform switching of receiving antenna S4, S5, the plurality of frequencies an internal frequency synthesizer (not shown) synthesizing a reception frequency divided into channels, switching the reception frequency at regular time intervals. Further, it sends a synchronization signal to a receiver S7 synchronizing the timing of transmission and reception from the transmitter S6.

[0071] Figure 21 shows a flowchart of illegal carrier prevention processing IC tagged items.

First, the transmitter S6 is to transmit a read signal ID at the carrier frequency f0 via the transmit antennas S2 in step 301.

Next, the receiver S7 is via receive antenna S4 determines whether it has received a response signal of the IC tag S10 whether we in step 302, the transmission of the read signal ID returns to step 301 if it receives repeat.

Transmitter S6 in the next step 303 transmits a test signal in order at a carrier frequency fl~fn divided time via the transmitting antenna S3 are if it does not receive.

Then, if via the receiver S7 is receiving antenna S5 All in all transport frequency Fl~fn, Te determined force whether it receives the test signal in step 304, the received returns to step 301 ID repeated transmission of the read signal.

If it does not receive the broadcasts an alarm by lighting the lamp S8 in a next step 305, the process ends.

BRIEF DESCRIPTION OF THE DRAWINGS

[0072] FIG. 1 is a plan view of the swap prevention function IC tag of the first invention.

It is a cross-sectional view of FIG. 1; FIG.

3 is a plan view of the break switch.

It is a cross-sectional view of FIG. 4 FIG.

FIG. 5 is a plan view of the breaking switch modification.

6 is a block diagram of a swap prevention function IC tag of the first invention.

7 is a diagram showing a broken state of breaking switch.

8 is a diagram showing a broken state of breaking switch modification.

9 is a block diagram of a failure detection function IC tag of the second invention.

FIG. 10 is an operation flowchart of the failure detection function IC tag.

11 is an internal plan view of a write-once function IC tag of the third invention.

It is a cross-sectional view of FIG. 12 FIG. 11. An external plan view of FIG. 13 FIG. 11.

14 is a block diagram of a write-once function IC tag of the third invention.

It is an operation flow chart of FIG. 15 the write-once function IC tag.

圆 16 is a tiered state transition diagram of a write-once function IC tag.

圆 17 is a schematic diagram of a write-once function IC tag having a controlled number of corrupted detection unit.

18 is a block diagram of a transmitter variable cycle active IC tag of the fourth aspect of the present invention.

圆 19 is a graph showing changes in outgoing period t by distance d.

圆 20 is a schematic diagram of illegal carrier prevention device IC-tagged article of the fifth aspect of the present invention.

21 is a flowchart of illegal carrier prevention processing IC tagged items.

DESCRIPTION OF SYMBOLS

1 IC chip

11 rectifier circuit

12 demodulation circuit

13 modulation circuit

14 clock circuit

15 CPU

16 memory

17 AZD strange

18 sensor amplifiers

19 sensor

20 timer

2 antenna coil

3 break switch

31 membrane

32 packing

33 liquid storage layer

34 electrode

35 leads 4 board

5 inlet

6 surface Shinore

61 Rabenore

7 release paper

8 reader Z writer

9 antenna coil a pressure-sensitive adhesive b ink c cuts d thin line

C controller

Claims

The scope of the claims
Cutaway with [I] the external force more than a predetermined data input circuit IC is applied by inserting the Suitsu switch to break the circuit,
Input means for inputting the state of the switch,
Transmitting means for transmitting the state of the input switch is added to the response signal,
Swap prevention function IC tag comprising: a.
[2] IC tag according to claim 1, wherein the switch is one that was formed in vulnerable bag containing the conductive ink.
[3] IC tag according to claim 1, wherein the vulnerable bag put the switch force S ink is to be formed by inserting a thin wire conductive.
[4] IC tag according to claim 1, characterized in that formed in the fragile conductive bags containing the said switch force S ink.
[5] The switch is secured to the bottom surface to the substrate of the inlet, IC tag according to claim 1, characterized in that it had et attach to adhere the upper surface to a surface seal.
[6] Roughness force Ji because weakening lines on the substrate inlet to the bottom of the switch contacts is formed
V, IC tag according to claim 5, wherein Rukoto.
[7] above the surface of the substrate switch near the inlet is decorated surface forces 卩E to adsorb ink, IC tag according to claim 5, wherein Rukoto.
[8] above the surface of the substrate switch near the inlet is applied paint to adsorb ink, IC tag according to claim 5, wherein Rukoto.
[9] above the surface of the substrate switch near the inlet is affixed tape of adsorbing ink, IC tag according to claim 1, wherein Rukoto.
[10] The AZD varying incorporated in IC comprising an analog input terminal to be connected to the sensor,
This was connected to the analog input terminal of the switch to break the above external force given is applied, damage detection function IC tag characterized by disabling the input from the sensor when this switch is damaged.
[II] stored in the memory to the input of the sensor power as historical data,
IC tag according to claim 10, wherein freezing the historical data stored in memory until it simultaneously when the switch is damaged.
[12] IC tag according to claim 10 wherein the input of the sensor force when the provision outside, characterized in that stored in separate memory with normal data as abnormal data.
[13] according to the input of the sensor force when the vibration data, compares the waveform pattern of the vibration data enter the normal waveform pattern preset always when a mismatch, characterized in that it as abnormal data IC tag to claim 12.
[14] time sensor, a temperature sensor wherein the sensor is an electrical analog amount changes depending on the condition of the subject, the humidity sensor or a vibration sensor, IC tag according to claim 10, wherein a is or misalignment.
[15] IC tag according to claim 14 wherein said time sensor characterized that you have been formed of a material which changes its electrical resistance with the progress of oxidation.
[16] The temperature sensor is formed of a material of varying thermoelectric voltages or electrical resistance with temperature, IC tag according to claim 14, wherein Rukoto.
[17] The humidity sensor is formed of a material capacitance or electrical resistance by humidity changes, IC tag according to claim 14, wherein Rukoto.
[18] The vibration sensor is formed of a material whose electrical resistance varies loose coupling structure by vibration, IC tag according to claim 14, wherein Rukoto.
[19] and peelable label is attached on the surface substrate of the inlet,
A switch which is set to be broken and peeled off the label,
A memory write is prohibited When this switch is damaged,
Write-once function IC tag which is characterized in that it comprises an.
[20] IC tag according to claim 19, wherein the exfoliated portion and peeling the label is characterized in that is marked mark can be confirmed visually.
[21] a plurality of the labels,
Allocating the switch and memory in correspondence with each label,
IC tag according to claim 19, wherein the write to the memory switch corresponding to each of peeling these labels correspond damaged is characterized in that it is prohibited.
[22] IC tag according to claim 19, wherein the switch is one that was formed in vulnerable bag containing the conductive liquid.
[23] 19. Symbol mounting the IC tag, wherein the switch is one that was formed of a conductive thin wire.
[24] 19. Symbol mounting the IC tag, wherein the switch is one that was formed of a conductive thin film.
[25] the switch is secured to the bottom surface to the substrate of the inlet, IC tag according to claim 19, wherein a is obtained attach to adhere the top surface to the surface substrate.
[26] the switch is added the ability to erase all the data recorded up to that for the memory that is write-protected damaged, IC tag according to claim 19, wherein Rukoto
[27] a transmitting means for transmitting the ID at regular outgoing period,
Receiving means for receiving an outgoing wave interrogator,
Measuring means for measuring an outgoing radio waves received voltage of the received interrogator,
And changing means for changing the calling period according to the measured reception voltage,
Outgoing variable-cycle active IC tag comprising: a.
[28] IC tag according to claim 27, wherein the frequency of the outgoing radio wave transmitting wave and the interrogator of the ID are different.
[29] IC tag according to claim 27, wherein maintaining the outgoing period immediately before when transmitting radio waves of the interrogator is temporarily interrupted.
[30] IC tag according to claim 27, wherein transmitting a radio wave of the interrogator, characterized in that the return to the calling period set in advance when the interrupted period of time.
[31] IC tag according to claim 27, wherein the can be selected from a transmitting radio wave frequency is 1 or more frequency channels of the interrogator.
[32] IC tag according to claim 27, wherein said measuring means to said changing means in response to continuously measured reception voltage, characterized in that continuously changing the outgoing periodic.
[33] a first communication means for IC tag through an antenna and a gate installed at the gate to communicate, a second communication means for the antenna each other and installed in the gate to communicate,
A switching Ru switching means to said second communication means when the first communication unit detects the incommunicable,
And informing means for informing an alarm when the second communication unit detects the incommunicable after switching,
Illegal carrier prevention device IC-tagged article, characterized in that it comprises a.
[34] the illegal carrier prevention apparatus according to claim 33, wherein the communication frequency of the first communication means and second communication means are different.
[35] The first communication means and second communication means illegal carrier preventing apparatus according to claim 33, wherein the synchronizing the timing of the transmission and reception during communication.
[36] The second communication means illegal carrier prevention apparatus according to claim 33, wherein the communicating is switched by time division a plurality of frequency channels.
PCT/JP2005/007860 2004-04-28 2005-04-26 Ic tag and dishonest taking prevention device using ic tag WO2005106782A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP2004132420A JP2005316628A (en) 2004-04-28 2004-04-28 Ic tag with replacement prevention function
JP2004-132420 2004-04-28
JP2004-137251 2004-05-06
JP2004137251A JP2005321853A (en) 2004-05-06 2004-05-06 Variable transmission cycle active tag
JP2004-140829 2004-05-11
JP2004140829A JP2005322119A (en) 2004-05-11 2004-05-11 Device for preventing illegal taking of article equipped with ic tag
JP2004-324985 2004-11-09
JP2004324985A JP2006134223A (en) 2004-11-09 2004-11-09 Ic tag with damage detection function
JP2004-344726 2004-11-29
JP2004344726A JP2006155237A (en) 2004-11-29 2004-11-29 Ic tag with write-once function

Publications (1)

Publication Number Publication Date
WO2005106782A1 true true WO2005106782A1 (en) 2005-11-10

Family

ID=35241879

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2005/007860 WO2005106782A1 (en) 2004-04-28 2005-04-26 Ic tag and dishonest taking prevention device using ic tag

Country Status (1)

Country Link
WO (1) WO2005106782A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007179375A (en) * 2005-12-28 2007-07-12 Pfu Ltd Method and system for preventing data falsification
WO2012028280A3 (en) * 2010-08-30 2012-04-26 Tagstar Systems Gmbh Tamper-proof rfid label

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JPH06156691A (en) * 1992-11-25 1994-06-03 Nippondenso Co Ltd Electronic tag
JPH10228523A (en) * 1997-02-17 1998-08-25 Glory Ltd Non-contact tag reader provided with illegality detecting function
JP2000090224A (en) * 1998-09-14 2000-03-31 Toshiba Corp Information processing medium
JP2000205892A (en) * 1999-01-11 2000-07-28 Internatl Business Mach Corp <Ibm> Method and apparatus for safely deciding various states of history of commodity
JP2002060012A (en) * 2000-08-09 2002-02-26 Nippon Signal Co Ltd:The Slip for article transportation
JP2002525640A (en) * 1998-09-28 2002-08-13 タグテック リミテッド Rfid detection system
US20020188259A1 (en) * 2001-05-21 2002-12-12 Scott Laboratories, Inc. Smart supplies, components and capital equipment
JP2003111956A (en) * 2001-10-04 2003-04-15 Lintec Corp Unsealing detector and unsealing detection method
JP2003256784A (en) * 2002-02-28 2003-09-12 Toshiba Corp Non-contact type ic card reader/writer device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06156691A (en) * 1992-11-25 1994-06-03 Nippondenso Co Ltd Electronic tag
JPH10228523A (en) * 1997-02-17 1998-08-25 Glory Ltd Non-contact tag reader provided with illegality detecting function
JP2000090224A (en) * 1998-09-14 2000-03-31 Toshiba Corp Information processing medium
JP2002525640A (en) * 1998-09-28 2002-08-13 タグテック リミテッド Rfid detection system
JP2000205892A (en) * 1999-01-11 2000-07-28 Internatl Business Mach Corp <Ibm> Method and apparatus for safely deciding various states of history of commodity
JP2002060012A (en) * 2000-08-09 2002-02-26 Nippon Signal Co Ltd:The Slip for article transportation
US20020188259A1 (en) * 2001-05-21 2002-12-12 Scott Laboratories, Inc. Smart supplies, components and capital equipment
JP2003111956A (en) * 2001-10-04 2003-04-15 Lintec Corp Unsealing detector and unsealing detection method
JP2003256784A (en) * 2002-02-28 2003-09-12 Toshiba Corp Non-contact type ic card reader/writer device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007179375A (en) * 2005-12-28 2007-07-12 Pfu Ltd Method and system for preventing data falsification
JP4763453B2 (en) * 2005-12-28 2011-08-31 株式会社Pfu Data alteration prevention method and a data alteration prevention systems
WO2012028280A3 (en) * 2010-08-30 2012-04-26 Tagstar Systems Gmbh Tamper-proof rfid label
US8991709B2 (en) 2010-08-30 2015-03-31 Tagstar Systems Gmbh Tamper-proof RFID label

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