JP4666281B2 - Radio tag circuit element and tag label producing apparatus - Google Patents

Description

  The present invention relates to a RFID circuit element capable of reading or writing RFID tag information from outside via wireless communication, and a tag label producing apparatus for producing a tag label having the RFID circuit element.

Conventionally, a wireless communication system that matches the antenna impedance of a receiver and an antenna in accordance with a reception frequency has been proposed (see, for example, Patent Document 1). In this prior art, matching data is acquired for each reception frequency based on the detected antenna impedance value and stored in the storage means. Then, at the time of reception, the corresponding stored matching data is read in response to the received frequency, and the constant is adjusted and controlled by the matching element with the matching control signal corresponding to the read data, and the matching is automatically performed. Yes.
JP-A-6-90186

In recent years, RFID (Radio) that reads / writes information of a wireless tag by transmitting an inquiry and receiving a response from a reader / writer without contact with a small wireless tag.
There is known a Frequency Identification) system.

  The wireless tag circuit element provided in the wireless tag rectifies the carrier wave (signal) from the interrogator received by the antenna and the IC circuit unit for storing predetermined RFID tag information, the antenna connected to the IC circuit unit Power generating means for generating electric power and modulation / reflecting means for modulating a carrier wave based on a predetermined information signal and reflecting the reflected signal via an antenna. Even when the wireless tag is dirty or placed at a position where it cannot be seen, the reader / writer side can access the IC circuit unit (read / write information) and manage the product. Practical use is expected in various fields such as inspection processes.

  In such a RFID tag communication system, in order to perform communication by matching the impedance between the antenna and the IC circuit unit to efficiently generate electric power, the above-mentioned conventional technology is applied and transmitted from the apparatus side (reader / writer side). When the received signal is received by the antenna of the RFID circuit element, it is considered that the matching data stored in advance in the memory of the IC circuit unit is read and impedance matching is performed accordingly.

  However, in this case, the following inconvenience occurs. That is, since many RFID tag circuit elements are supplied with electric power from received radio waves and operate using this as a driving source, for example, when the distance from the apparatus side (reader / writer side) to the RFID tag circuit element is relatively long There is a possibility that power is not sufficiently supplied to the RFID circuit element, and the operation itself of reading data from the memory for impedance matching becomes impossible. For this reason, it is difficult to ensure a good impedance matching state between the antenna of the RFID circuit element and the IC circuit part, and it is difficult to reliably perform long-distance communication.

  An object of the present invention is to provide a RFID circuit element capable of realizing a good impedance matching state between an antenna and an IC circuit section and capable of reliably performing long-distance communication, and a tag label producing apparatus for producing a RFID label provided with the RFID circuit element. It is to provide.

In order to achieve the above object, a first invention is a wireless tag circuit element that includes an IC circuit unit that stores information and a tag-side antenna connected to the IC circuit unit, and transmits and receives information. The IC circuit unit includes impedance control means for variably setting the impedance according to an input signal from the outside and holding the setting state in a nonvolatile manner , and the impedance control means is parallel to the tag side antenna. A plurality of reactance elements connected to each other, a plurality of fuses respectively connected in series to the plurality of reactance elements, and a cutting control means capable of individually cutting the plurality of fuses in response to an input signal from the outside The cutting control means includes a tag side first control means for outputting a control signal in response to the external input signal, and the tag side first control. Characterized in that it comprises a fuse control current application means capable of supplying a fusing current to the fuse in response to the control signal from the means.

  In the first invention of this application, the impedance control means provided in the IC circuit section has a function of variably setting the impedance of the RFID circuit element in accordance with an external input signal. As a result, for example, a signal for matching the RFID tag circuit element impedance is transmitted by the device side antenna of the tag label producing apparatus capable of securing a relatively strong signal strength, and the impedance is set according to the response signal from the RFID tag circuit element side for this. If the control signal is output to the impedance control means and the impedance of the IC circuit section is variably set, it is possible to reliably supply power to the impedance control means and execute impedance matching. In addition, at this time, by providing a function for holding the impedance set by the impedance control means in a non-volatile manner, once the impedance matching setting is made, it is possible to reliably perform the operation without generating a matching driving power source. A good impedance matching state can be maintained. As a result, a good impedance matching state between the antenna of the RFID tag circuit element and the IC circuit unit can always be realized, and long-distance communication can be reliably performed.

  By cutting a plurality of fuses connected in series to a plurality of reactance elements individually by a cutting control means, the number of reactance elements connected in parallel to the tag side antenna is reduced, thereby reducing the impedance of the IC circuit section. The setting can be made variable and the setting can be held in a nonvolatile manner.

  The tag-side first control means outputs a control signal, and the fuse control current applying means supplies the blowing current to the fuse and cuts it accordingly, whereby the plurality of fuses can be cut individually.

In order to achieve the above object, a second invention is a wireless tag circuit element that includes an IC circuit unit that stores information and a tag-side antenna connected to the IC circuit unit, and transmits and receives information. The IC circuit unit includes impedance control means for variably setting the impedance according to an input signal from the outside and holding the setting state in a nonvolatile manner, and the impedance control means is parallel to the tag side antenna. A plurality of reactance elements connected to each other, a plurality of fuses respectively connected in series to the plurality of reactance elements, and a cutting control means capable of individually cutting the plurality of fuses in accordance with an input signal from the outside The cutting control means includes a first nonvolatile memory for storing information on the number or location of the plurality of fuses that can be cut. Characterized in that it comprises means.

For example, information on the number and location of fuses that can be further cut, or the number and location of fuses that have already been cut, can be obtained from the first non-volatile storage means, and reliable impedance control without excess or deficiency can be performed. .
According to a third invention, in the first or second invention, the reactance element is a capacitor.
A plurality of fuses connected in series to capacitors as a plurality of reactance elements are individually cut by the cutting control means, thereby reducing the number of capacitors connected in parallel to the tag side antenna. The impedance can be variably set and the setting can be held in a nonvolatile manner. Further, the capacitor can be easily fabricated in the IC circuit portion.

In order to achieve the above object, a fourth invention is an RFID circuit element comprising an IC circuit section for storing information and a tag-side antenna connected to the IC circuit section, for transmitting and receiving information. The IC circuit unit includes impedance control means for variably setting impedance according to an input signal from the outside and holding the setting state in a nonvolatile manner, and the impedance control means is connected to the tag side antenna. A reactance element; a storage switch element connected in series or in parallel with the tag side antenna; and an element control means capable of controlling the storage switch element in accordance with an external input signal, the storage switch element Is a floating gate type field effect transistor, and the element control means includes a charge amount of the floating gate type field effect transistor or Characterized in that it comprises a second non-volatile memory means for storing information relating to Niryou level.

  For example, by controlling the storage switch element with element control means, such as controlling the amount of charge of the floating gate type field effect transistor, the impedance of the IC circuit section is variably set and the setting is held in a nonvolatile manner can do.

  By controlling and increasing / decreasing the charge amount of the floating gate type field effect transistor as a storage switch element, for example, by the element control means, the impedance of the IC circuit unit can be set variably and the setting can be held in a nonvolatile manner. it can.

For example, information on the amount of charge generated in the floating gate field-effect transistor at that time or that can be further accumulated, or the level of charge amount is obtained from the second nonvolatile memory means, so that there is no excess or deficiency. Impedance control can be performed.
In a fifth aspect based on the fourth aspect, the element control means includes a tag side second control means for outputting a control signal in response to the external input signal, and the tag side second control means. Charge injection means capable of generating a predetermined charge in the floating gate type field effect transistor according to a control signal is provided.
The tag-side second control means outputs a control signal, and in response to this, the charge injection means generates (or eliminates) a predetermined charge in the floating gate field effect transistor, whereby the charge amount of the floating gate field effect transistor Can be controlled.

To achieve the above object, according to a sixth aspect of the present invention, there is provided an IC circuit unit comprising impedance control means arranged on a tag tape, variably setting impedance according to an external input signal, and holding the set state in a nonvolatile manner And a device side antenna for transmitting and receiving information by wireless communication with a RFID tag circuit element having a tag side antenna connected to the IC circuit unit, and generating access information to the IC circuit unit, An information access means for transmitting to the RFID circuit element via the side antenna and accessing the IC circuit section, and a reply signal returned from the RFID circuit element in accordance with the access information by the information access means From the reply signal receiving means received via the device side antenna and the reply signal received by the reply signal receiving means, the IC Determination means for determining a matching state between the impedance of the road portion and the impedance of the tag side antenna, and impedance setting to the impedance control means of the IC circuit portion of the RFID circuit element based on the determination result of the determination means Impedance control signal output means for outputting a control signal for use.

  In the tag label producing device, the access information generated by the information access means is transmitted to the RFID tag circuit element provided on the tag tape via the device-side antenna to access (read or write) the IC circuit unit. The tag label is created using the tag tape with the RFID circuit element after the information is read or written in this way.

Here, in the sixth invention of the present application, for example, the access information from the information access means is transmitted to the RFID circuit element via the device side antenna for impedance matching before the access to the IC circuit section. In response, the reply signal returned from the RFID circuit element is received by the reply signal receiving means via the device-side antenna. Based on the return signal, the determining means determines the impedance matching state between the IC circuit portion of the RFID circuit element and the tag side antenna, and further, based on the determination result, the control signal for setting the impedance is the RFID circuit element. The impedance of the IC circuit unit is variably set. Thereby, the impedance of the IC circuit part of the RFID circuit element and the tag side antenna can be matched.

  In general, since the distance between the device-side antenna and the RFID circuit element at the time of access is relatively short in the tag label producing apparatus, it is used for accessing the IC circuit section in the tag label producing apparatus as described above. By transmitting the signal for impedance matching using the antenna on the device side, the signal can reach the RFID tag circuit element with a relatively strong signal strength, and power can be supplied to the impedance control means. Can be executed. At this time, the impedance control means holds the set impedance in a non-volatile manner, and once the impedance matching is set, the good impedance is surely ensured even without generating a matching driving power supply. A consistent state can be maintained. As a result, a good impedance matching state between the antenna of the RFID tag circuit element and the IC circuit unit can always be realized at the time of user use after the label is created, so that long-distance communication can be reliably performed.

In a seventh aspect based on the sixth aspect , the determining means transmits the information access means to the RFID circuit element with a predetermined signal strength, and the reply signal to this is the reply signal receiving means. When received, it is determined that the matching state between the impedance of the IC circuit unit and the impedance of the tag side antenna is completed.

  For example, even if transmission to the RFID circuit element is performed with a sufficiently small predetermined signal strength, if the corresponding return signal can be received by the return signal receiving means, the predetermined signal strength received by the tag side antenna The radio wave is efficiently supplied to the power generation means of the RFID circuit element, can generate sufficient power necessary for the operation of the circuit, and a good communication state is realized between the device-side antenna and the RFID circuit element. I understand that. Therefore, the determination unit can determine that the impedance is satisfactorily matched between the IC circuit unit and the tag-side antenna, and can determine the matching completion state.

According to an eighth aspect of the present invention, in the sixth aspect of the invention, there is provided signal strength detecting means for detecting the signal strength of the reply signal received by the reply signal receiving means. When the signal strength of the reply signal detected by the signal strength detection means is equal to or greater than a predetermined threshold value, the impedance of the IC circuit unit and the impedance are transmitted to the RFID circuit element with signal strength. It is determined that the matching with the impedance of the tag side antenna is completed.

  For example, when transmission to the RFID circuit element is performed with a certain predetermined signal strength and the response signal received by the response signal receiving means is relatively large and exceeds a predetermined threshold, the device It can be seen that a good communication state is realized between the side antenna and the RFID circuit element. Therefore, the determination unit can determine that the impedance is satisfactorily matched between the IC circuit unit and the tag-side antenna, and can determine the matching completion state.

A ninth invention is characterized in that, in any one of the sixth to eighth inventions, a drive means for feeding out the tag tape and a printing means for printing in a predetermined area of the tag tape. To do.

  The RFID tag circuit element can be accessed sequentially by feeding out the tag tape by the driving means, and the printed tag tape can be generated by printing on a predetermined area of the tag tape by the printing means. It can be used to create a printed RFID label.

According to a tenth aspect of the present invention, in the ninth aspect of the invention, the drive means, the determination means, and so on, so as to perform the determination and output of the impedance setting control signal according to the determination when the feeding out of the tag tape is stopped. And device-side first control means for controlling the impedance control signal output means.

  Thereby, the feeding out of the tag tape is stopped, and the impedance matching control can be stably performed in a state where the positional relationship and distance between the RFID circuit element on the tag tape and the device-side antenna are fixed.

In an eleventh aspect based on the ninth aspect , the printing is performed so that the determination and output of the control signal for impedance setting in accordance with the determination are performed before printing on the predetermined area of the tag tape is started. And a device-side second control means for controlling the impedance control signal output means.

  Thus, for example, after impedance matching control is performed, access to the RFID circuit element and printing on a predetermined area of the tag tape can be performed to create a RFID tag with print.

In a twelfth aspect according to the ninth aspect , the printing means is configured to perform the determination and output of the impedance setting control signal in accordance with the determination after the printing on the predetermined area of the tag tape is completed. It has the apparatus side 3rd control means which controls the said determination means and the said impedance control signal output means, It is characterized by the above-mentioned.

  Thereby, for example, impedance matching control is performed after first printing on a predetermined area of the tag tape, and then access to the RFID circuit element is performed to create a RFID tag with printing.

  ADVANTAGE OF THE INVENTION According to this invention, the favorable impedance matching state of an antenna and IC circuit part is realizable, and long-distance communication can be performed reliably.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a system configuration diagram showing a wireless tag generation system to which the tag label producing apparatus of this embodiment is applied.

  In the RFID tag generating system 1 shown in FIG. 1, a tag label producing device 2 according to the present embodiment is connected to a route server 4, a terminal 5, a general-purpose computer 6, and a plurality of information servers 7 via a wired or wireless communication line 3. It is connected.

  FIG. 2 is a conceptual configuration diagram showing a detailed structure of the tag label producing apparatus 2.

  2, the device body 8 of the tag label producing device 2 is provided with a cartridge holder portion (not shown) as a recess, and a cartridge (RFID tag circuit element cartridge) 100 is detachably attached to this holder portion. It has been.

  The apparatus main body 8 drives a print head (thermal head, printing means) 10 that performs predetermined printing (printing) on the cover film 103 fed out from the second roll 104, and an ink ribbon 105 that has finished printing on the cover film 103. Pressure roller driving for feeding out from the cartridge 100 as a printed tag label tape 110 while adhering the ribbon take-up roller drive shaft 11, the cover film 103 and the base tape (tag tape) 101 fed out from the first roll 102 An antenna (device-side antenna) that transmits and receives signals by radio communication between the shaft 12 (driving means) and the RFID circuit element To (provided later) provided on the base tape 101 using a high frequency such as a UHF band. ) 14 and the printed tag label tape 110 at a predetermined timing for a predetermined length A cutter 15 that generates a RFID label T in label form (described later in detail), a delivery roller 17 that conveys and sends the RFID label T to the carry-out port 16, and the presence / absence of the RFID label T at the carry-out port 16 And a housing 9 having an outer shell configured to store them and the cartridge holder portion into which the cartridge 100 is detachably fitted and the carry-out port 16.

  The antenna 14 is composed of a directional antenna (in this example, a so-called patch antenna) having directivity on one side (in this example, the front side of the paper in FIG. 2) and the axial direction of the first roll 102. It is arrange | positioned in the vicinity (back side toward the paper surface of FIG. 2), and is arrange | positioned so that it can communicate with the feeding part vicinity area | region X of the base tape 101 of the 1st roll 102. FIG.

  On the other hand, the apparatus main body 8 also processes a signal read from the RFID circuit element To and a high frequency circuit 21 for accessing (writing or reading) the RFID circuit element To via the antenna 14. Signal processing circuit 22, the above-described ribbon take-up roller drive shaft 11, the cartridge motor 23 that drives the pressure roller drive shaft 12, the cartridge drive circuit 24 that controls the drive of the cartridge motor 23, and the print head A printing drive circuit 25 that controls energization to the power supply 10, a solenoid 26 that drives the cutter 15 to perform a cutting operation, a solenoid drive circuit 27 that controls the solenoid 26, and a feed roller that drives the feed roller 17 Motor 28, high frequency circuit 21, signal processing circuit 22, cartridge drive circuit 24, mark Drive circuit 25, the solenoid driving circuit 27, via the delivery roller driving circuit 29 and the like, and a control circuit 30 for controlling the tag label producing apparatus 2 overall operation.

  The control circuit 30 is a so-called microcomputer, and although not shown in detail, is composed of a central processing unit such as a CPU, a ROM, and a RAM, and is stored in advance in the ROM while using a temporary storage function of the RAM. Signal processing is performed according to the program. The control circuit 30 is connected to, for example, a communication line via the input / output interface 31, and is connected to the route server 4, the other terminal 5, the general-purpose computer 6, the information server 7 and the like connected to the communication line. It is possible to exchange information.

  FIG. 3 is an explanatory diagram for explaining the detailed structure of the cartridge 100.

  In FIG. 3, the cartridge 100 includes a casing 100 </ b> A, the first roll 102 around which the strip-shaped base tape 101 is wound and disposed in the casing 100 </ b> A, and substantially the same width as the base tape 101. The second roll 104 around which the transparent cover film 103 is wound, and the ribbon supply side roll 111 for feeding out the ink ribbon 105 (thermal transfer ribbon, but not required when the cover film is made of thermal tape); Then, the ribbon take-up roller 106 for winding the ribbon 105 after printing, the base tape 101 and the cover film 103 are pressed and bonded to each other, and the tape is fed in the direction indicated by the arrow A while making the printed tag label tape. A pressure roller 107 (which also functions as a tape feed roller).

  The first roll 102 is wound around the reel member 102a with the base tape 101 in which a plurality of RFID tag circuit elements To are sequentially arranged at predetermined equal intervals in the longitudinal direction.

  In this example, the base tape 101 has a four-layer structure (see a partially enlarged view in FIG. 3), from the side wound inside (right side in FIG. 3) to the opposite side (left side in FIG. 3), An adhesive layer 101a made of an appropriate adhesive material, a colored base film 101b made of PET (polyethylene terephthalate), an adhesive layer 101c made of an appropriate adhesive material, and a release paper 101d are laminated in this order.

  An antenna (tag side antenna) 152 for transmitting and receiving information is integrally provided on the back side (left side in FIG. 3) of the base film 101b, and information can be updated so as to be connected thereto (rewritable rewritable). The IC circuit unit 151 for storage is formed, and the RFID tag circuit element To is constituted by these.

  The adhesive layer 101a for later bonding the cover film 103 is formed on the front side (right side in FIG. 3) of the base film 101b, and the RFID circuit element is formed on the back side (left side in FIG. 3) of the base film 101b. The release paper 101d is bonded to the base film 101b by the adhesive layer 101c provided so as to enclose To. The release paper 101d is one that can be adhered to the product or the like by the adhesive layer 101c when the RFID label T finally completed in a label shape is attached to a predetermined product or the like by peeling it off. It is.

  The second roll 104 has the cover film 103 wound around a reel member 104a. The cover film 103 fed out from the second roll 104 is a ribbon driven by the ribbon supply side roll 111 and the ribbon take-up roller 106 arranged on the back side thereof (that is, the side to be bonded to the base tape 101). 105 is pressed against the print head 10 to be brought into contact with the back surface of the cover film 103.

  The ribbon winding roller 106 and the pressure roller 107 are driven by the driving force of the cartridge motor 23 (see FIG. 2 described above), for example, a pulse motor provided outside the cartridge 100. By being transmitted to the roller drive shaft 12, it is rotationally driven.

  In the cartridge 100 configured as described above, the base tape 101 fed out from the first roll 102 is supplied to the pressure roller 107. On the other hand, the cover film 103 fed out from the second roll 104 is ink driven by a ribbon supply side roll 111 and a ribbon take-up roller 106 arranged on the back side thereof (that is, the side to be bonded to the base tape 101). The ribbon 105 is pressed against the print head 10 and brought into contact with the back surface of the cover film 103.

  When the cartridge 100 is mounted on the cartridge holder portion of the apparatus main body 8 and a roll holder (not shown) is moved from the separation position to the contact position, the cover film 103 and the ink ribbon 105 are moved to the print head 10 and the platen roller. The base tape 101 and the cover film 103 are sandwiched between the pressure roller 107 and the sub-roller 109. The ribbon take-up roller 106 and the pressure roller 107 are rotationally driven in synchronization with the directions indicated by the arrows B and D by the driving force of the cartridge motor 23, respectively. At this time, the pressure roller driving shaft 12 is connected to the sub roller 109 and the platen roller 108 by a gear (not shown), and the pressure roller 107, the sub roller 109, and the platen roller are driven by the driving of the pressure roller driving shaft 12. The roller 108 rotates, the base tape 101 is fed out from the first roll 102, and is supplied to the pressure roller 107 as described above. On the other hand, the cover film 103 is fed out from the second roll 104 and the plurality of heating elements of the print head 10 are energized by the print drive circuit 25. As a result, a print R (see FIG. 7 described later) is printed on the back surface of the cover film 103. The base tape 101 and the cover film 103 after the printing are bonded and integrated by the pressure roller 107 and the sub-roller 109 to form a tag label tape with print and are carried out of the cartridge 100. . The ink ribbon 105 that has finished printing on the cover film 103 is taken up by the ribbon take-up roller 106 by driving the ribbon take-up roller drive shaft 11. Further, a guide roller 120 is provided in the vicinity of the feeding of the first roll 102, and the positional relationship between the antenna 14 on the apparatus side and the RFID label T is predetermined even if the outer diameter changes depending on the remaining amount of the first roll 102. The communication condition with the RFID circuit element To is kept constant by regulating the range.

  FIG. 4 is a functional block diagram showing detailed functions of the high-frequency circuit 21. In FIG. 4, the high-frequency circuit 21 receives a transmission unit 32 that transmits a signal to the RFID circuit element To through the antenna 14 and a reflected wave from the RFID circuit element To that is received by the antenna 14. The unit 33 and the transmission / reception separator 34 are configured.

The transmitting unit 32 generates a carrier wave for accessing (writing or reading) the RFID tag information of the IC circuit unit 151 of the RFID circuit element To, a crystal resonator 35, and a PLL (Phase
The generated carrier wave is modulated on the basis of a signal supplied from the signal processing circuit 22 (Locked Loop) 36 and VCO (Voltage Controlled Oscillator) 37 (in this example, a “TX_ASK” signal from the signal processing circuit 22 A transmission multiplication circuit 38 (amplitude modulation based on the above) (however, in the case of amplitude modulation, an amplification factor variable amplifier or the like may be used) and a modulated wave (wireless tag information) modulated by the transmission multiplication circuit 38 And a variable transmission amplifier 39 that determines and amplifies the amplification factor according to the “TX_PWR” signal from 30. The generated carrier wave preferably uses a frequency in the UHF band or microwave band, and the output of the transmission amplifier 39 is transmitted to one of the antennas 14 via the transmission / reception separator 34 and wirelessly transmitted. This is supplied to the IC circuit 151 of the tag circuit element To. Note that the RFID tag information is not limited to the signal modulated as described above, but may be only a carrier wave.

  The reception unit 33 is necessary from the reception first multiplication circuit 40 that multiplies the reflected wave from the RFID circuit element To received by the antenna 14 and the generated carrier wave, and the output of the reception first multiplication circuit 40. Received by the antenna 14, the first band-pass filter 41 for extracting only a signal in a wide band, the reception first amplifier 43 that amplifies the output of the first band-pass filter 41 and supplies the amplified signal to the first limiter 42. The reception second multiplication circuit 44 for multiplying the reflected wave from the RFID circuit element To and the carrier wave having a phase delayed by 90 ° after being generated, and a signal in a necessary band from the output of the reception second multiplication circuit 44 A second bandpass filter 45 for extracting only the first bandpass filter 45, and an output of the second bandpass filter 45 is input and amplified and supplied to the second limiter 46. A reception second amplifier 47 is provided. The signal “RXS-I” output from the first limiter 42 and the signal “RXS-Q” output from the second limiter 46 are input to the signal processing circuit 22 and processed.

  The outputs of the reception first amplifier 43 and the reception second amplifier 47 are also input to an RSSI (Received Signal Strength Indicator) circuit 48, and a signal “RSSI” indicating the strength of these signals is input to the signal processing circuit 22. It has become so. In this way, in the tag label producing apparatus 2 of the present embodiment, the reflected wave from the RFID circuit element To is demodulated by IQ orthogonal demodulation.

  FIG. 5 is a functional block diagram showing a functional configuration of the RFID circuit element To. In FIG. 5, the RFID circuit element To includes an antenna 152 (tag antenna) that transmits and receives signals in a non-contact manner using a high frequency such as a UHF band with the antenna 14 on the tag label producing apparatus 2 side, and the antenna 152. And the IC circuit portion 151 connected to the terminal.

  The IC circuit unit 151 includes a plurality (four in this example) of disconnectable capacitors C1, C2, C3, C4 (reactance elements) and a non-disconnectable capacitor C0 connected in parallel to the antenna 152. A plurality of (in this example, 4 groups × 2 groups = 8) fuses F11, F12, and fuses F21 respectively connected in series to the capacitors C1, C2, C3, and C4 (specifically, on the terminal sides at both ends). , F22, fuses F31 and F32, fuses F41 and F42, a control circuit / memory 155 (tag-side first control means) for outputting a control signal in response to an external input signal, and the control circuit / memory 155 A fusing current is supplied to each of the fuses F11, F12, F21, F22, F31, F32, F41, and F42 with a gate voltage corresponding to the control signal. Possible FETs (= field effect transistors, fuse control current application means) t11, t12, t21, t22, t31, t32, t41, t42, a rectifier circuit 153 that rectifies the carrier wave received by the antenna 152, and the antenna A modulation / demodulation circuit 158 connected to 152, a power supply circuit (in the control circuit / memory 155) for accumulating the energy of the carrier wave rectified by the rectification circuit 153 and serving as a driving power supply for the IC circuit unit 151, and the antenna 152 And a clock extractor (not shown) for extracting a clock signal from the carrier wave received by the control circuit and supplying it to the control circuit / memory 155. Between the IC circuit unit 151 and the antenna 152, there are provided two coils L1 and L2 connected in series to the antenna 152 (however, a coil function may be provided by a wiring pattern). ing. However, the coils L1 and L2 may be incorporated in the IC circuit unit 151.

  The control circuit / memory 155 has a function of controlling the operation of the RFID circuit element To and storing a predetermined information signal. In this example, the control circuit / memory 155 can be disconnected from the four capacitors C1 to C4. A large number (in other words, four sets of eight fuses F11 and F12, fuses F21 and F22, fuses F31 and F32, and fuses F41 and F42, how many sets that can be cut remain. Each set is cut simultaneously. ) Is stored (first nonvolatile storage means, details will be described later). Of course, not the number of pieces that can be cut, but cut portion information or uncut portion information indicating a cut set or an uncut set may be stored. The control circuit / memory 155 interprets the received signal demodulated by the modulation / demodulation circuit 158, generates a return signal based on the stored information signal as described above, and returns the response by the modulation / demodulation circuit 158. Perform basic control.

  The modem circuit 158 demodulates the communication signal received from the antenna 14 of the tag label producing apparatus 2 received by the antenna 152 and, based on the response signal from the control circuit / memory 155, the carrier wave received from the antenna 152. Modulated reflection.

  The FETs t11 to t42 flow the currents acquired by the rectifier circuit 153 and charged in the control circuit / memory 155 to the corresponding fuses F11 to F42, respectively.

  In this example, the capacitors C1, C2, C3, and C4 have the same capacitance.

  FIGS. 6A and 6B show an example of the appearance of the RFID label T formed by completing the information writing of the RFID circuit element To and the cutting of the printed tag label tape 110 as described above. 6A is a top view, and FIG. 6B is a bottom view. FIG. 7 is a cross-sectional view taken along section VII-VII ′ in FIG.

  6 (a), 6 (b), and 7, the RFID label T has a five-layer structure in which the cover film 103 is added to the four-layer structure shown in FIG. From the (upper side in FIG. 7) to the opposite side (lower side in FIG. 7), the cover film 103, the adhesive layer 101a, the base film 101b, the adhesive layer 101c, and the release paper 101d constitute five layers. As described above, the RFID circuit element To including the antenna 152 provided on the back side of the base film 101b is provided in the adhesive layer 101c and printed on the back surface of the cover film 103 (in this example, the RFID label T). "RF-ID" indicating the type) is printed.

  FIG. 8 shows a screen displayed on the terminal 5 or the general-purpose computer 6 when accessing (writing or reading) the RFID tag information of the IC circuit unit 151 of the RFID circuit element To by the tag label producing apparatus 2 as described above. It is a figure showing an example.

  In FIG. 8, in this example, the type (access frequency and tape size) of the tag label, the print character R printed corresponding to the RFID circuit element To, and the access (writing) that is an ID unique to the RFID circuit element To. (Reading) ID, the address of the article information stored in the information server 7, the storage address of the corresponding information in the route server 4 and the like can be displayed on the terminal 5 or the general-purpose computer 6. Then, the tag label producing apparatus 2 is activated by the operation of the terminal 5 or the general-purpose computer 6 so that the print character R is printed on the cover film 103 and the write ID and article information are written on the IC circuit unit 151 as will be described later. Etc. (or wireless tag information such as article information stored in advance in the IC circuit unit 151 is read).

  At the time of writing (or reading) as described above, the ID of the generated RFID label T and the information read from the IC circuit unit 151 of the RFID label T (or information written to the IC circuit unit 151) The correspondence relationship is stored in the route server 4 and can be referred to as necessary.

  Here, the greatest feature of the tag label producing apparatus 2 of the present embodiment is that the capacitors C1 to C4 are (predetermined in advance) using the fuses F11 to F42 provided in the IC circuit unit 151 when producing the RFID label. ) The impedance matching is performed by cutting in a predetermined order, and the setting is retained with non-volatility. The contents will be described in detail below.

  FIG. 9 is a flowchart showing a control procedure executed by the control circuit 30.

  In FIG. 9, when a writing (or reading) operation of the tag label producing apparatus 2 is performed, this flow is started. First, in step S10, the RFID tag information to be written from the antenna 14 to the IC circuit unit 151 of the RFID circuit element To and input via the terminal 5 or the general-purpose computer 6 is printed on the RFID label T by the print head 10. The print information to be read is read through the communication line 3 and the input / output interface 31.

  Thereafter, the process proceeds to step S15, and a variable N for counting the number of times of retry (retry) without a response from the RFID circuit element To and a flag F indicating whether communication is good or bad are initialized to zero.

  Next, in step S <b> 16, a control signal is output to the cartridge driving circuit 24, and the ribbon take-up roller 106 and the pressure roller 107 are driven to rotate by the driving force of the cartridge motor 23. Thereby, the base tape 101 is fed out from the first roll 102 and supplied to the pressure roller 107, and the cover film 103 is fed out from the second roll 104. Further, a control signal is output to the delivery roller motor 28 via the delivery roller drive circuit 29 to drive the delivery roller 17 to rotate. As a result, as described above, the base tape 101 and the cover film 103 (which has been printed as will be described later) are bonded and integrated by the pressure roller 107 and the sub-roller 109 to form a tag label tape 110 with print. The tapes 101, 103, and 110 are started to be driven so as to be conveyed outward from the cartridge body 100.

  Thereafter, the process proceeds to step S17, and it is determined whether or not the base tape 101 has been transported to a predetermined position (a position where the RFID circuit element To faces the antenna 14). Specifically, for example, the cartridge 100 is provided with an appropriate identification mark provided corresponding to each RFID circuit element To on the base tape 101 (specifically, for example, the release paper 101d or the cover film 103 may be used). It is sufficient to detect by a known tape sensor provided outside (for example, further downstream of the cutter 15 in the transport direction).

  When the determination is satisfied, the process proceeds to step S18, where a control signal is output to the cartridge drive circuit 24 to stop the rotational drive of the ribbon take-up roller 106 and the pressure roller 107, and for the feed roller via the feed roller drive circuit 29. A control signal is output to the motor 28 to stop the rotational driving of the feed roller 17 and stop the tape conveyance.

  Thereafter, in step S200, impedance matching processing is performed between the antenna 152 of the RFID circuit element To and the IC circuit unit 151 (refer to FIG. 10 described later for details).

  In step S20, a control signal is output to the cartridge drive circuit 24, and the ribbon take-up roller 106 and the pressure roller 107 are rotated again, and the control signal is sent to the feed roller motor 28 via the feed roller drive circuit 29. Is output, the delivery roller 17 is rotationally driven again, and the tape drive is resumed.

  Thereafter, in step S30, a write process is performed to transmit and write the RFID tag information to the RFID circuit element To (refer to FIG. 11 described later for details).

  Then, the process proceeds to step S35, a control signal is output to the print drive circuit 25, the print head 10 is energized, and the cover film 103 is arranged at predetermined intervals (for example, at a predetermined pitch on the base tape 101). A print R of characters, symbols, barcodes, etc. read in step S10 is printed on the area to be attached to the back surface of the RFID circuit element To. When step S35 ends, the process proceeds to step S39.

  In step S39, it is determined whether or not the flag F = 0. If the writing process has been completed normally, F = 0 remains (see step S38A in the flow shown in FIG. 11 described later), so this determination is satisfied, and the routine goes to step S40. On the other hand, if the writing process is not normally completed for some reason, F = 1 is set (see step S38A in the flow shown in FIG. 11 to be described later), so this determination is not satisfied, and the process proceeds to step S45 to drive printing. A control signal is output to the circuit 25 to stop energization of the print head 10 and stop printing. As described above, the fact that the RFID circuit element To is not a normal product is clearly displayed by stopping the printing, and then the process proceeds to step S60 described later.

  In step S 40, the combination of the RFID tag information written to the RFID circuit element To in the above step S 30 and the print information printed by the print head 10 corresponding thereto is sent via the input / output interface 31 and the communication line 3. The data is output via the terminal 5 or the general-purpose computer 6 and stored in the information server 7 or the route server 4. The stored data is stored and held in, for example, a database so that it can be referred to from the terminal 5 or the general-purpose computer 6 as necessary.

  Thereafter, in step S50, after confirming whether or not all the printing on the area corresponding to the RFID circuit element To which is the processing target at this time in the cover film 103 is completed, the process proceeds to step S60.

  In step S60, it is determined whether the printed tag label tape 110 has been transported to a predetermined position to be cut by the cutter 15. Specifically, for example, whether the target RFID circuit element To and the print area of the cover film 103 corresponding to the target RFID circuit element To all exceed the cutter 15 by a predetermined length (margin amount) An appropriate identification mark provided corresponding to each RFID circuit element To on 101 (specifically, for example, release sheet 101d or cover film 103) may be provided outside cartridge 100 (for example, further downstream of cutter 15 in the transport direction). It is sufficient to perform detection by using a known tape sensor provided on the side). In addition, without such detection, it is determined based on the print information whether the length of the print character length of the print R plus a predetermined blank area exceeds the total length of the RFID circuit element To (is exceeded). For example, it is possible to avoid cutting the RFID circuit element To to be bonded by cutting the margin area outside with the cutter 15 at least when the printing of the cover film 103 is completed). Also good.

  If the determination in step S60 is satisfied, the process proceeds to step S70. In step S70, control signals are output to the cartridge drive circuit 24 and the delivery roller drive circuit 29, the drive of the cartridge motor 23 and the delivery roller motor 28 is stopped, and the ribbon take-up roller 106, the pressure roller 107, and the delivery roller. The rotation of 17 is stopped. Thereby, the feeding of the base tape 101 from the first roll 102, the feeding of the cover film 103 from the second roll 104, and the conveyance of the tag label tape 110 with print by the feed roller 17 are stopped.

  In the next step S80, a control signal is output to the solenoid drive circuit 27 to drive the solenoid 26, and the printed tag label tape 110 is cut by the cutter 15. As described above, at this time, for example, the RFID tag circuit element To to be processed and the print area of the cover film 103 corresponding thereto all sufficiently exceed the cutter 15, and by cutting the cutter 15, the RFID tag A label-like RFID label T on which the RFID tag information of the circuit element To is read and predetermined printing corresponding to the RFID tag information is performed is generated.

  Thereafter, the process proceeds to step S90, where a control signal is output to the delivery roller drive circuit 29, the drive of the delivery roller motor 28 is resumed, and the delivery roller 17 is rotated. As a result, the conveyance by the delivery roller 17 is resumed, and the RFID label T generated in the label shape in step S150 is conveyed toward the carry-out port 16 and is discharged from the carry-out port 16 to the outside of the apparatus 2.

  Finally, in step S100, the entire RFID tag information of the IC circuit unit 151 provided in the RFID label circuit element To remaining in the communication range (the above-described region X) in the cartridge 100 is erased (initialized). Specifically, an “Erase” command for initializing information stored in the memory unit 157 of the RFID circuit element To is output to the signal processing circuit 22. Based on this, an “Erase” signal as RFID tag information is generated by the signal processing circuit 22 and transmitted to all RFID circuit elements To in the communication range (the region X) via the transmitter 32 and the antenna 14 of the high frequency circuit 21. Then, the memory unit 157 is initialized.

  FIG. 10 is a flowchart showing the detailed procedure of step S200.

  In FIG. 10, when the above-described step S18 in FIG. 9 is completed, the process first proceeds to step S205, where the “TX_PWR” signal is output to the variable transmission amplifier 39 provided in the transmission unit 32 of the high-frequency circuit 21 and The access power (output power amount) value for the tag circuit element To is set to the maximum value (within the range allowed by the device 2 or within a preset power range).

  Thereafter, the process proceeds to step S210, and a “matching” command for detecting the presence of the RFID circuit element To existing within the communication range and obtaining a response thereof (in other words, performing an impedance matching advance notice) is sent to the signal processing circuit 22. Output. Based on this, a predetermined matching signal (= inquiry signal in this example, for example, an access information signal such as a “Scroll All ID” signal and a “Ping” signal) is generated in the signal processing circuit 22, and the communication range via the high frequency circuit 21. Is transmitted to the target RFID circuit element To existing in the ID, and the ID of the target RFID circuit element is identified. When a plurality of RFID circuit elements To respond, the RFID circuit elements having a predetermined ID (for example, the ID number is minimum or maximum) are targeted for matching. A matching command is transmitted to the target tag circuit element to prompt a reply.

  In step S215, a reply signal (for example, RFID tag information including tag ID information) transmitted from the target RFID circuit element To corresponding to the matching signal is received via the antenna 14, and the high frequency circuit 21 is received. The signal is captured via the signal processing circuit 22. Then, based on the fetch result, it is determined whether or not a correct response signal has been received from the RFID circuit element To. If the response signal has not been received, the determination is not satisfied, and the routine goes to Step S220 to perform predetermined error processing. For example, an error display signal is output to the terminal 5 or the general-purpose computer 6 via the input / output interface 31 and the communication line 3 to display a corresponding error (no target tag), and this flow is finished. Even if the target RFID circuit element cannot cope with the impedance matching process, a correct response signal is not received (in the RFID circuit element that cannot recognize the matching command, the command is ignored and the reply signal is not transmitted, or the command is not received. On the other hand, an incorrect response signal indicating that it is impossible to handle is transmitted), and the process proceeds to step 220.

  If a correct response signal is received from the RFID circuit element To, the determination is satisfied, and the routine goes to Step S225. In step S225, the "TX_PWR" signal is output to the variable transmission amplifier 39 provided in the transmission unit 32 of the high frequency circuit 21, and the access power (output power amount) value for the RFID circuit element To of the transmission unit 32 is set (this device). 2 is set to a minimum value within a range allowed by 2 or within a preset power range.

  Thereafter, the process proceeds to step S230 to obtain a response to the RFID tag circuit element To that has responded (= confirmed to exist within the communication range) (in other words, to detect the degree of matching of the current impedance). The “start” command is output to the signal processing circuit 22. Based on this, a predetermined activation signal (= inquiry signal in this example, for example, an access information signal such as a “Scroll All ID” signal or a “Ping” signal) is generated in the signal processing circuit 22, and impedance matching is performed via the high frequency circuit 21. It is transmitted to the target RFID circuit element To and prompts a reply.

  In step S235, a reply signal (for example, RFID tag information including tag ID information) transmitted from the target RFID circuit element To in response to the activation signal is received via the antenna 14, and the high frequency circuit 21 is received. The signal is captured via the signal processing circuit 22. Then, based on the fetch result, it is determined whether or not a correct response signal has been received from the RFID circuit element To. When the response signal is not received, it is considered that the impedance matching is not sufficiently achieved (therefore, the reception sensitivity is low), the determination is not satisfied, and the process proceeds to step S240.

  In step S240, as in step S205, the “TX_PWR” signal is output to the variable transmission amplifier 39 provided in the transmission unit 32 of the high-frequency circuit 21, and the access power (output power amount) for the RFID circuit element To of the transmission unit 32 is output. ) Set the value to the maximum value.

  In step S245, a predetermined number (one in this example) of the capacitors C1 to C4 provided in the RFID tag circuit element To (a relatively large number in advance) (four in this example) are provided. A “capacitor disconnection” command is output to the signal processing circuit 22. Based on this, a predetermined capacitor disconnection signal is generated by the signal processing circuit 22 and transmitted to the target RFID circuit element To existing within the communication range via the high frequency circuit 21, and the control circuit of the RFID circuit element To Captured in the memory 155.

  In step S250, the response signal transmitted from the target RFID circuit element To in response to the capacitor disconnection signal is received via the antenna 14 and taken in via the high frequency circuit 21 and the signal processing circuit 22. Then, based on the result of capturing, a signal indicating that the set of fuses F11 to F42 related to one capacitor C1 to C4 corresponding to the correct disconnection response signal (= capacitor disconnection signal is disconnected from the RFID circuit element To is described in detail later. ) Is received. If the disconnection response signal is received, the determination is satisfied, the process returns to step S225, the transmission output is minimized again, and the same procedure is repeated thereafter. In this way, while the activation response signal by the RFID circuit element To is not received at the minimum transmission power value, the step S225 → the step S230 → the step S235 → the step S240 → the step S245 → the step S250 → the step S225 is repeated in the capacitor in the step S245. The fuses F11 to F42 related to the capacitors C1 to C4 of the IC circuit unit 151 of the RFID circuit element To are each disconnected by the disconnection signal (details will be described later), thereby changing the capacitance of the capacitors C1 to C4. Then, the input impedance changes (decreases) sequentially (in this example, matching is achieved by reducing the capacitance component).

  When the input impedance decreases by such repetition and the sensitivity gradually increases and the start response signal is received, it is considered that the impedance matching has been sufficiently achieved (therefore, the reception sensitivity has increased), and thus the step. The determination in S235 is satisfied, and the routine goes to Step S265.

  In step S265, the “TX_PWR” signal is output to the variable transmission amplifier 39 provided in the transmission unit 32 of the high-frequency circuit 21, and the access power (output power amount) value for the RFID circuit element To of the transmission unit 32 is set as the device 2. In FIG. 9, the value is set to an optimal value set in advance for writing information into the IC circuit unit 151 when the RFID label is created, and the process returns to step S20 in FIG.

  On the other hand, as described above, step S225 → step S230 → step S235 → step S240 → step S245 → step S250 → step S225 is repeated, and the fuses F11 to F42 are disconnected one by one, the input impedance is decreased, and the sensitivity is gradually increased. However, if the activation response signal is not received, and the pair of fuses F41 to F42 to be finally disconnected is lost and the disconnection response signal is no longer received, the determination in step S250 is not satisfied, and the process proceeds to step S255.

  In step S255, in response to the fact that the activation response signal is not received even if the sensitivity is greatly increased as described above, the RFID circuit element To exceeds the impedance matching range by the tag label producing device 2 and has a very high sensitivity. The small error display signal is output to the terminal 5 or the general-purpose computer 6 via the input / output interface 31 and the communication line 3 to display the corresponding low sensitivity, and the process proceeds to step S260.

  In step S <b> 260, it is determined whether an operation instruction signal for creating a tag label is input from the terminal 5, for example, via the input / output interface 31 and the communication line 3. Even if the low-sensitivity display is performed on the terminal 5 or the general-purpose computer 6 in the above step S255, if the operator gives an instruction to create a tag label after recognizing it (that is, the operator knows that only near field communication can be used) If yes, the determination is satisfied, and the process proceeds to step S265, and as described above, the access power (output power amount) value is set to the value for writing information when the RFID label is created, and the process proceeds to step S20 in FIG. And return. If the operator has not instructed to create a tag label (such as giving up because of low sensitivity), the process proceeds to the above-described step S220 to perform a predetermined error process (for example, an error display indicating that the tag label is not created because of low sensitivity). This flow is finished. In addition, as the error processing, the RFID circuit element To may be discharged without writing or reading information.

  FIG. 11 is a flowchart showing the detailed procedure of step S30.

  In FIG. 11, when the above-described step S <b> 20 in FIG. 9 ends, the process first proceeds to step S <b> 31, and a “Program” command for writing desired data in the memory unit 157 is output to the signal processing circuit 22. Based on this, a “Program” signal as radio tag information including, for example, ID information is generated by the signal processing circuit 22, and within the communicable area (in the above-described region X) via the transmitter 32 and the antenna 14 of the high-frequency circuit 21. Are transmitted to all the RFID circuit elements To and the information is written in the memory unit 157.

  Thereafter, in step S 32, a “Verify” command for confirming the contents of the memory unit 157 is output to the signal processing circuit 22. Based on this, a “Verify” signal as RFID tag information is generated in the signal processing circuit 22 and transmitted to all RFID circuit elements To in the communicable area via the transmitter 32 and the antenna 14 of the high frequency circuit 21. Prompt for a reply.

  Then, the process proceeds to step S33, and a reply (response) signal transmitted (returned) from all the RFID circuit elements To in the communicable area corresponding to the “Verify” signal is received via the antenna 14, and the high frequency signal is received. The data is taken in via the receiving unit 33 and the signal processing circuit 22 of the circuit 21.

  Next, in step S34, based on the reception result of step S33, at least one of all the RFID circuit elements To in the communication area, any valid reply signal (that has been normally stored in the memory unit 157). It is determined whether or not a signal indicating

  If the determination is satisfied, the data is correctly written in at least one RFID circuit element To in the area X, and the writing failure to all the RFID circuit elements To in the area X is avoided. Exit the routine. If the determination is not satisfied, the process moves to step S36, 1 is added to N, and it is further determined in step S37 whether N = 5. If N ≦ 4, the determination is not satisfied and the routine returns to step S31 and the same procedure is repeated. If N = 5, the process proceeds to step S38. In step S38, an error display signal is output to the terminal 5 or the general-purpose computer 6 via the input / output interface 31 and the communication line 3 to display a corresponding writing failure (error). Then, in step S38A, the flag F = 1. This routine is finished as follows. As described above, even if information writing is not successful, the retry is performed up to five times, so that it is possible to make sure of the writing reliability.

In the impedance matching process, since the RFID circuit element To to be matched is identified, only the RFID circuit element To may be specified and the writing process in Step 30 may be performed. The writing process is the same as that shown in FIG. 11. In this case, the object of the writing process is limited to one RFID circuit element To, so that a stable writing process can be performed. Furthermore, step 100 in FIG. 9 is not necessary.
In the above, a case has been described in which RFID tag information is transmitted to the RFID circuit element To and written in the IC circuit 151. However, the present invention is not limited to this, and predetermined RFID tag information (tag identification information, etc.) is previously stored. There is a case where the RFID label T is created by reading the RFID tag information from the read-only RFID circuit element To stored and held so as not to be rewritable and performing printing corresponding thereto.

  In this case, only the print information is read in step S10 in FIG. 9, and the RFID tag information is read in step S30 (refer to FIG. 12 described later for details). Thereafter, in step S40, the combination of the print information and the read RFID tag information is stored.

  FIG. 12 is a flowchart showing a detailed procedure of the wireless tag reading process.

In FIG. 12, when the RFID circuit element To to be read information is transported to the vicinity of the antenna 14, in step S101, information stored in the RFID circuit element To is read out “Scroll”.
The “All ID” command is output to the signal processing circuit 22. Based on this, a “Scroll All ID” signal as RFID tag information is generated by the signal processing circuit 22 and transmitted to the RFID tag circuit element To to be read via the high frequency circuit 21 to prompt a reply.

  Next, in step S102, a reply signal (RFID tag information including tag ID information) transmitted from the RFID tag circuit element To to be read in response to the “Scroll All ID” signal is received via the antenna 14. Then, the high-frequency circuit 21 and the signal processing circuit 22 are used.

  Next, in step S103, it is determined using a known error detection code (CRC code; Cyclic Redundancy Check, etc.) whether or not there is an error in the reply signal received in step S102.

  If the determination is not satisfied, the process moves to step S104, 1 is added to N, and it is further determined in step S105 whether N = 5. If N ≦ 4, the determination is not satisfied and the routine returns to step S101 and the same procedure is repeated. If N = 5, the process proceeds to step S106, and an error display signal is output to the terminal 5 or the general-purpose computer 6 via the input / output interface 31 and the communication line 3, and a corresponding reading failure (error) display is performed. In step S107, the flag F is set to 1, and this routine is terminated. Thus, even if information reading is unsuccessful, retrying is performed up to five times, so that the reading reliability can be ensured to ensure completeness.

  If the determination in step S103 is satisfied, reading of the RFID tag information from the RFID circuit element To to be read is completed, and this routine ends.

  FIG. 13 shows a control procedure executed in the control circuit / memory 155 of the IC circuit unit 151 of the RFID circuit element To corresponding to the flow of step S200 by the control circuit 30 of the tag label producing apparatus 2 shown in FIG. It is a flowchart to represent.

  In FIG. 13, in the RFID circuit element To, as described above, some signal is transmitted from the antenna 14 of the tag label producing apparatus 2, received by the antenna 152, rectified by the rectifier circuit 153, and then driven by the power circuit. This flow is started when power is supplied.

  First, in step S305, the received signal received via the antenna 152 and demodulated by the modulation / demodulation circuit 158 is interpreted to determine whether any command is included therein. As described above with reference to FIGS. 9 and 10, in this embodiment, as a signal including a command that can be received, a matching signal (see step S210 in FIG. 10), an activation signal (see step S230 in FIG. 10), Capacitor disconnection signal (see step S245 in FIG. 10), and access information signal for writing or reading information at the time of tag label creation (Scroll All ID signal, Erase signal, Program ID signal, Verify in FIGS. 9, 11, and 12) Signal). If the received signal is any one of these, the determination at step S305 is satisfied, and the routine goes to step S310.

  In step S310, it is determined whether or not the received signal is the matching signal. If it is a matching signal, the determination is satisfied and the routine goes to Step S315, where a response signal corresponding to the matching signal is generated based on the stored information signal as described above, and the modulation / demodulation circuit 158 passes the antenna 152 through. After returning the response to the antenna 14 of the tag label producing apparatus 2, the process returns to step S305 and the same procedure is repeated. If it is not a matching signal, the determination at step S310 is not satisfied and the routine goes to step S320. Before returning the response signal in step S315 and returning to step S305, the flag indicating that it was a matching signal is set in the non-volatile memory means in the control circuit / memory 155, and then the process returns to step S305. It may be determined that the flag has been set, and step S305 and step S310 may be skipped and the process may proceed to step S320 (the same applies to other signals).

  In step S320, it is determined whether the received signal is the activation signal. If it is an activation signal, the determination is satisfied and the routine goes to Step S325, where a response signal corresponding to the activation signal is generated based on the stored information signal as described above, and the modulation / demodulation circuit 158 passes the antenna 152. After returning the response to the antenna 14 of the tag label producing apparatus 2, the process returns to step S305 and the same procedure is repeated. If it is not an activation signal, the determination at step S320 is not satisfied, and the routine goes to step S330.

  In step S330, it is determined whether the received signal is the capacitor disconnect signal. If it is a capacitor disconnection signal, the determination is satisfied and the routine goes to Step S335. Here, as described above, the control circuit / memory 155 has a function of storing and holding NF, the number of times the capacitor can be cut (in other words, the number of uncut fuses F11 to 42). In step S335, the number of possible cuttings NF is read.

  Thereafter, in step S340, it is determined whether or not the number of possible cuttings NF = 0 read in step S335 (the number of cuts NF ′ already arranged so as to store the number of cuts NF ′ (NFo = in this example) It may be determined whether or not 4) has been reached). If a set of uncut fuses F11 to F42 (in other words, uncut capacitors C1 to C4) remains, NF ≧ 1 and the determination is not satisfied, and the routine goes to Step S345.

  In step S345, the group cutting process of the next fuse in a predetermined order among the group of uncut fuses F11 to F42 is performed. That is, a control signal is output to the corresponding FET t11 to t42, and in response to this, the gate voltage corresponding to the control signal is output from the FET t11 to t42 to the corresponding fuse F11 to F42, and the one set of fuses is blown ( Disconnected).

  Thereafter, in step S350, the NF value read in step S340 is decremented by one in response to the cutting in step S345, and the reduced value is updated and stored as a new NF value in step S355, and then in step S360. Move on.

  In step S360, a predetermined disconnection response signal (indicating that the disconnection processing of one set of fuses F has been completed) is generated based on the stored information signal as described above, and the tag label is transmitted via the antenna 152 by the modem circuit 158. After returning the response to the antenna 14 of the creating apparatus 2, the process returns to step S305 and the same procedure is repeated.

  As long as the cutting signal is received and NF ≧ 1 (= one or more sets of fuses F11 to F42 that can be cut remain), step S305 → step S310 → step S320 → step S330 → Step S335 → Step S340 →... → Step S360 → Step S305 are repeated, and the fuse F is cut one by one along the predetermined order to reduce the capacitance of the entire capacitor C, thereby improving the sensitivity of the IC circuit unit 151. We will improve. If NF = 0 during such repetition (= when all the fuses F11 to F42 are disconnected), the determination at step S340 is satisfied, and the routine goes to step S365.

  In step S365, a disconnection inability signal indicating that further disconnection processing is impossible is generated (after all capacitors C1 to C4 have been disconnected), and the modulation / demodulation circuit 158 of the tag label producing apparatus 2 via the antenna 152 After replying to the antenna 14, the process returns to step S305 and the same procedure is repeated.

  On the other hand, if the received signal described above is not the capacitor disconnection signal in step S330 described above, the determination is not satisfied, and the routine goes to step S370. In step S370, it is determined whether or not the received signal is an access information signal (Scroll All ID signal, Erase signal, Program ID signal, Verify signal, or the like) for performing information writing or reading when the above-described tag label is created. If it is an access information signal, the determination is satisfied and the routine goes to Step S375, where a response signal corresponding to each signal is generated based on the stored information signal as described above (see FIGS. 11 and 12 above). ) After the modem circuit 158 sends a reply to the antenna 14 of the tag label producing apparatus 2 via the antenna 152, the process returns to step S305 and the same procedure is repeated. If it is not an access information signal, the determination in step S375 is not satisfied, and the process returns to step S305 as described above.

  In the above, the control circuit / memory 155 of the RFID circuit element To and the FETs t11 to t42 constitute a disconnection control means capable of individually disconnecting a plurality of fuses in accordance with an external input signal. These, the capacitors C1 to C4, and the fuses F11 to F42 constitute an impedance control means that variably sets the impedance according to an input signal from the outside and holds the set state in a nonvolatile manner.

  Further, the transmission unit 32 and the signal processing circuit 22 of the high-frequency circuit 21 of the tag label producing device 2 generate access information to the IC circuit unit and transmit it to the RFID circuit element via the device-side antenna to access the IC circuit unit. And the reception unit 33 and the signal processing circuit 22 of the high-frequency circuit 21 send a reply signal returned from the RFID circuit element according to the access information from the information access means via the device-side antenna. The reply signal receiving means for receiving is configured. Also, in the flow of FIG. 10 executed by the control circuit 30, step S235 is a matching state between the impedance of the IC circuit unit and the impedance of the tag side antenna based on the reply signal received by the reply signal receiving means. The judging means for judging is configured. Step S245 constitutes an impedance control signal output means for outputting a control signal for impedance setting to the impedance control means of the IC circuit portion of the RFID tag circuit element based on the determination result of the determination means.

  Further, the driving means is configured so that steps S18 and S200 in the flow of FIG. 9 executed by the control circuit 30 perform determination and output of a control signal for impedance setting according to the determination when the feeding of the tag tape is stopped. , A determination unit and an apparatus-side first control unit for controlling the impedance control signal output unit.

  Further, step S200 in the flow of FIG. 9 executed by the control circuit 30 performs determination and output of a control signal for impedance setting according to the determination before printing on a predetermined area of the base tape 101 is started. Further, the apparatus side second control means for controlling the printing means, the determination means, and the impedance control signal output means is constituted.

  In the present embodiment described above, when the RFID label producing device 2 creates the RFID label T, the access generated by the signal processing circuit 22 and the high-frequency circuit 21 with respect to the RFID circuit element To provided on the base tape 101 is generated. An information signal is transmitted through the antenna 14 to access (read or write) the IC circuit unit 151, and thus printed with the RFID circuit element To after the information is read or written. The RFID label T is created using the tag label tape 110.

  At this time, in the RFID label producing apparatus 2, before producing the RFID label T, an activation signal as access information is sent from the signal processing circuit 22 and the high frequency circuit 32 through the antenna 14 for impedance matching in the same manner as described above. The signal is transmitted to the circuit element To (see step S230 in FIG. 10), and the return signal returned from the RFID circuit element To in response to this is received via the antenna 14. Based on this return signal, the control circuit 30 determines the impedance matching state between the IC circuit unit 151 and the antenna 152 (step S235). Further, based on the determination result, the control signal for impedance setting (= in this example) (Capacitor cutting signal) is output to the control circuit / memory 155 of the RFID circuit element To (see step S245), and each set of fuses F11 to F42 relating to the capacitors C1 to C4 is sequentially cut to change the total capacitance. By doing so, the impedance of the IC circuit unit 151 is variably set. Thereby, the impedance of the IC circuit unit 151 of the RFID circuit element To and the antenna 152 can be matched.

  In the RFID label producing apparatus 2, the distance between the antenna 14 and the RFID circuit element To at the time of access is set to be relatively short. In this embodiment, as described above, the IC circuit section in the RFID label producing apparatus 2 is used. Since the signal for impedance matching is transmitted using the antenna 14 used to access 151, the signal reaches the RFID circuit element To with a relatively strong signal strength, and power is supplied to the control circuit / memory 155 and the like. In addition, since it is possible to supply power necessary for fuse cutting, it is possible to reliably perform impedance matching. At this time, the fuses F11 to F42 are blown (cut) to perform variable impedance setting, and the set impedance value can be held in a nonvolatile manner (= the matching condition once set in the IC circuit unit 151 is power Therefore, once the impedance matching is set, the good impedance matching state can be reliably maintained without further generating a matching driving power source or the like. As a result, when the created RFID label T is used by the user, a good impedance matching state between the antenna 152 of the RFID circuit element To and the IC circuit unit 151 can always be realized, and long-distance communication is reliably performed. Can do.

  In this embodiment, in particular, information such as the number of sets of fuses F that can be further cut in the control circuit / memory 155 of the RFID circuit element To or the number of sets of fuses F that have been cut is displayed. Since it is stored, it is possible to perform reliable impedance control without excess or deficiency.

  In this embodiment, in particular, in step S18 and step S200 of the flow shown in FIG. 9, when the feeding of the base tape 101 is stopped, determination of the impedance matching state and output of an impedance setting control signal corresponding thereto are performed. Do. Thereby, the feeding of the base tape 101 from the first roll 102 is stopped, and the impedance matching is stably performed in a state where the positional relationship and distance between the RFID circuit element To and the antenna 14 on the base tape 101 are fixed. Control can be performed.

  In addition to the above, the above embodiment can be further modified in various ways without departing from the scope of the gist and technical idea. Hereinafter, such modifications will be sequentially described.

(1) When the impedance matching state is determined based on the received signal strength In the above embodiment, as shown in FIG. 10, the transmission power from the RFID label producing apparatus 2 side to the RFID circuit element To is minimized. However, the present invention is not limited to this, although transmission is performed (steps S225 and S230) and the impedance matching state is determined based on whether or not there is a response (step S235).

  That is, in step S225, transmission is performed with a predetermined fixed value, not a minimum value. In step S235, the activation response signal from the RFID circuit element To received by the antenna 14 corresponding to the activation signal is transmitted. Depending on whether the signal strength (detected by the RSSI circuit 48 which is a signal strength detection means of the receiving unit 33 of the high frequency circuit 21 and acquired by the signal processing circuit 22) is equal to or higher than a predetermined threshold value, The impedance matching state may be determined.

  When the impedance is well matched, the power received by the tag antenna is efficiently supplied to the rectifier circuit, and the power reflected from the tag antenna is small. When modulation is performed based on an activation response signal or the like in the wireless tag circuit, for example, when the tag antenna is short-circuited by a diode or the like of the modulation circuit, power is not supplied to the rectifier circuit, and almost no received power is received from the tag antenna. Reflected. Therefore, the intensity change of the radio wave reflected from the tag antenna increases with this modulation. When the impedance is not matched, there is reflection due to mismatch even when the tag antenna is not short-circuited by the modulation circuit, and the intensity of the radio wave reflected from the tag antenna is greater than when the impedance is matched. Therefore, the intensity change accompanying the modulation of the radio wave reflected from the tag antenna is reduced. As a result, the response signal subjected to IQ quadrature demodulation becomes larger as the impedance is better matched.

  That is, in this case, if the received response signal is relatively large and exceeds the threshold value, it can be seen that a good communication state is realized between the antenna 14 and the RFID circuit element To. It can be determined that the impedance is well matched between the circuit unit 151 and the antenna 152.

  Alternatively, the transmission power value may not be minimized from the beginning as in the above embodiment, but may be decreased in several steps. In this case, it is effective that the capacitances of the capacitors C1 to C4 are different from each other, and the capacitance to be disconnected is designated from the RFID label producing apparatus 2 side according to the starting power. That is, for example, if there is no activation response even if the power is large, the matching deviation is large, so the capacitor C having a large capacity is disconnected. When the transmission does not start after the transmission power is reduced, the matching deviation is reduced, so the capacitor C having a small capacity is disconnected. In this case, when a capacitor disconnection signal is transmitted from the RFID label producing apparatus 2 side, a signal specifying which capacitor C is to be disconnected may be transmitted. At this time, the RFID circuit element To updates and stores the location of the cut capacitor C or the location of the capacitor C that can be cut without being cut, and determines whether or not the cut is possible.

(2) In the case where the coil and the capacitor are arranged in reverse FIG. 14 is a functional block diagram showing a functional configuration of the RFID circuit element To-1 according to this modification, and corresponds to the above-described FIG. . In FIG. 14, instead of this, coils LA, LB, LC, LD, and L0 as reactance elements are provided at the positions of capacitors C1, C2, C3, C4, and C0 shown in FIG. Instead of this, capacitors CA and CB are provided at the positions of the shown coils L1 and L2. The coils LA, LB, LC, LD, LE include the above-described plural (in this example, 4 groups × 2 groups = 8) fuses F11, F12, fuses F21, F22, fuses F31, F32, fuses F41, F42. Are connected in series, and the FETs t11, t12, t21, t22, t31, t32, t41, and t42 are gate voltages corresponding to the control signals from the control circuit / memory 155 and the fuses F11, F12, F21, A fusing current is supplied to each of F22, F31, F32, F41, and F42.

  The RFID circuit element To-1 of the present modification is merely the replacement of the RFID circuit element To of the above embodiment with the capacitor C and the coil L as reactance elements. Except for, the description is omitted.

  Also in this modification, the same effect as the above embodiment is obtained.

(3) When impedance adjustment is performed without using a fuse In this modification, the impedance is controlled by controlling the charge amount of a floating gate type FET (field effect transistor) without using a fuse.

  FIG. 15 is a functional block diagram showing a functional configuration of the RFID circuit element To-2 according to the present modification, and is a diagram substantially corresponding to FIGS. 5 and 11 described above. In FIG. 15, the RFID circuit element To-2 includes a capacitor CP as a reactance element connected to the antenna 152 and a floating gate type field effect transistor (FET) as a storage switch element connected in parallel with the antenna 152. ) TTA and a predetermined value for the floating gate type field effect transistor (FET) ttA according to the control signal from the control circuit / memory 155 functioning as the tag side second control means for outputting the control signal according to the input signal from the outside And a field effect transistor (FET) tA as a charge injection means capable of generating the electric charge.

  As described above, the control circuit / memory unit 155 of the RFID circuit element To-2 outputs a corresponding control signal (impedance setting control signal) according to the signal transmitted from the antenna 14 of the tag label producing apparatus 2, Further, in response to the control signal, the FET tA as the charge injection means generates (or disappears) a predetermined charge (gate charge) in the floating gate type field effect transistor ttA, thereby reducing the charge amount of the floating gate type field effect transistor ttA. Control (= capacitance is changed).

  At this time, similarly to the case where the control circuit / memory 155 stores the number of sets of fuses F that can be cut in the above embodiment, in the present modification, the control circuit / memory 155 includes the floating gate type field effect transistor ttA. (Second non-volatile storage means) function for storing information relating to the charge amount or charge amount level of, for example, applied voltage, applied current, and application time thereof, and thereby, for example, a floating gate type field effect transistor at that time By acquiring information such as the amount of charge generated in ttA or that can further accumulate, and the charge amount level, it is possible to perform reliable impedance control without excess or deficiency.

  In the above, the control circuit / memory 155 and FETtA constitute an element control means capable of controlling the storage switch element in accordance with an external input signal, and this, the floating gate type FETttA and the capacitor CP (reactance element) The impedance control means is configured to variably set the impedance according to the input signal from the outside and hold the set state in a nonvolatile manner. The control circuit / memory 155 also constitutes a second non-volatile storage unit that stores information on the charge amount or the charge amount level of the floating gate type field effect transistor.

  In this modification, as described above, the impedance of the IC circuit unit 151 is variably set by controlling the amount of charge of the floating gate type field effect transistor ttA under the control of the control circuit / memory 155 and increasing / decreasing it. Settings can be retained in a non-volatile manner. As a result, similar to the above embodiment, the impedance variable setting can be performed and the set impedance value can be held in a nonvolatile manner. As a result, when the created RFID label T is used by the user, a good impedance matching state between the antenna 152 of the RFID circuit element To and the IC circuit unit 151 can always be realized, and long-distance communication is reliably performed. Can do.

  In the RFID circuit element To-2, as shown in FIG. 15, the floating gate type field effect transistor tA is connected in parallel to the antenna 152. However, the invention is not limited to this, and the floating tag type field effect transistor tA is connected in series. May be.

  FIG. 16 is a functional block diagram showing a functional configuration of the RFID circuit element To-3 of such a further modification. In FIG. 16, in the RFID circuit element To-3, a coil LP as a reactance element connected to the antenna 152 and a floating gate type field effect transistor (FET) as a storage switch element connected in series with respect to the antenna 152 ) TtB, ttC and a field effect transistor (FET) tB as charge injection means capable of generating a predetermined charge in the floating gate type field effect transistors (FET) ttB, ttC in accordance with a control signal from the control circuit / memory 155 , TC. As indicated by broken lines in the drawing, capacitors CQ and CR may be connected in parallel with the floating gate field effect transistors (FETs) ttB and ttC.

  As described above, in this modification, the control circuit / memory 155 and the FETs tB and tC constitute element control means capable of controlling the storage switch element in accordance with an external input signal, and the floating gate type FETttB and ttC. And the coil LP (reactance element) constitute impedance control means for variably setting the impedance according to an external input signal and holding the set state in a nonvolatile manner.

  Also according to this modification, the same effect can be obtained by the same operation principle as that of the modification shown in FIG.

  In the two modifications shown in FIGS. 15 and 16, the floating gate type FET is used as the memory switch element. However, the present invention is not limited to this, and a ferroelectric type FET or a non-volatile nonvolatile memory having a different structure is used. A similar function may be executed using a combination of a memory and a switch. In this case, the same effect is obtained.

(4) Variations in Arrangement Configuration of Cartridge and Antenna In the above, as shown in FIG. 3, with respect to the IC circuit portion 151 of the RFID circuit element To of the base tape 101 existing in the cartridge 100 In addition to accessing (reading / writing) via the antenna 14, impedance matching (matching) was also performed using the antenna 14. In other words, the antenna 14 is used as a dual-purpose antenna for access and matching. The matching was performed in a state in which the tape drive was stopped (that is, at least printing was not performed after printing was finished or before printing was started).

  FIG. 17A conceptually illustrates this, but the application of the present invention is not limited to such an antenna arrangement.

  That is, as shown in FIG. 17B, access for accessing (reading / writing) the IC circuit portion 151 of the RFID circuit element To of the base tape 101 in the state of being present in the cartridge 100. In addition to providing a dedicated antenna, an antenna dedicated for matching that performs impedance matching (matching) with the RFID circuit element To outside the cartridge 100 may be separately provided. In this case, for example, after the base tape 101 and the cover film 103 are transported and driven, access (reading / writing) by the access dedicated antenna and printing by the print head are performed, then the tape driving is stopped, and matching is performed in this stopped state. Just do it.

  On the other hand, as shown in FIG. 17C, only for matching that performs impedance matching (matching) on the IC circuit portion 151 of the RFID circuit element To of the base tape 101 existing in the cartridge 100. And an antenna dedicated to access for reading (writing) the RFID circuit element To outside the cartridge 100 may be provided. In this case, first, the drive of the base tape 101 and the cover film 103 is stopped and matching is performed in this stopped state, and then access (reading / writing) by the access dedicated antenna and the print head are started while transporting the tape. Printing may be performed.

(5) In the case where bonding is not performed That is, although not specifically described with reference to the drawings, printing is performed on the cover film 103 different from the base tape 101 provided with the RFID circuit element To as in the above embodiment. Instead of pasting them together, the present invention may be applied to a so-called non-laminate type cartridge that performs printing on a cover film provided on a tag tape. In this case, a plurality of RFID circuit elements To may be provided on the thermal tape, and printing may be performed on the surface of the thermal tape by a print head having a plurality of heating elements, or an ink ribbon as in the above embodiment may be used. The printing used may be used.

  Also in this modified example, as in the above-described embodiment, a good impedance matching state between the antenna 152 of the RFID circuit element To and the IC circuit unit 151 can always be realized, and long-distance communication can be reliably performed. Can be obtained.

(6) Others In addition to the capacitors C1 to C4, a similar capacitor may be newly attached from the outside of the RFID circuit element To (= so-called external attachment) to be connectable. In this way, for example, when the capacitance for impedance matching is insufficient even if all the capacitors C1 to C4 are added, the matching range is expanded by adding another external capacitor C. Is possible.

  Further, in the RFID label producing apparatus 2, it is preferable that the position of the antenna 14 and the RFID tag circuit element To at the time of impedance matching are always the same, so a positioning roller or the like may be provided separately. Alternatively, a positioning marker may be provided on the base tape 101, and this may be detected by a detection means to perform high-precision positioning. In this case, as described with reference to FIG. 9, it may be used also as an identification mark (for positioning a tape cutting position or a wireless tag information writing position) detected by a tape sensor.

  Also, as shown in FIG. 9, the impedance matching process is not performed on all the RFID circuit elements To in step S200, but the operator performs the impedance matching process in advance (in other words, the RFID circuit element for long distance communication). It may be specified whether or not. Or, conversely, the impedance mismatching process may be performed (= the impedance is intentionally shifted in the reverse of the impedance matching process) to intentionally create the RFID tag circuit element To for ultra short distance.

  In addition, since the radio communication frequency with the RFID circuit element To is slightly different from country to country at present, the RFID tag circuit element To (cartridge) may be common and the tag label producing apparatus 2 may be adapted to each country. In this case, even if the antenna is common, impedance can be matched according to the radio communication frequency of each country, and a radio tag capable of stable communication can be created.

  Further, in the above, an example in which communication (writing or reading) is performed with respect to the base tape 101 (or the thermal tape) moving inside the cartridge 100 or the like in accordance with the printing operation is shown, but the present invention is not limited thereto. The communication may be performed by stopping the base tape 101 or the like at a predetermined position (further held by a predetermined conveyance guide).

  Furthermore, it is assumed that the “Scroll All ID” signal, “Erase” signal, “Verify” signal, and “Program” signal used above comply with the specifications established by EPC global. EPC global is a non-profit corporation established jointly by the International EAN Association, which is an international organization of distribution codes, and the United Code Code Council (UCC), which is an American distribution code organization. Note that signals conforming to other standards may be used as long as they perform the same function.

  In addition, although not illustrated one by one, the present invention is implemented with various modifications within a range not departing from the gist thereof.

1 is a system configuration diagram showing a wireless tag generation system to which a tag label producing apparatus according to an embodiment of the present invention is applied. It is a conceptual block diagram showing the detailed structure of a tag label production apparatus. It is explanatory drawing for demonstrating the detailed structure of a cartridge. It is a functional block diagram showing the detailed function of a high frequency circuit. It is a functional block diagram showing the functional structure of a wireless tag circuit element. It is the upper surface figure and bottom view showing an example of the appearance of a RFID tag label. It is a cross-sectional view by the VII-VII 'cross section in FIG. It is a figure showing an example of the screen displayed on a terminal or a general purpose computer. It is a flowchart showing the control procedure performed by the control circuit. It is a flowchart showing the detailed procedure of step S200 shown in FIG. It is a flowchart showing the detailed procedure of step S30 shown in FIG. It is a flowchart showing the detailed procedure of a wireless tag reading process. It is a flowchart showing the control procedure performed with the control circuit and memory of the IC circuit part of a RFID circuit element. It is a functional block diagram showing the functional structure of the RFID circuit element by the modification which has arrange | positioned a coil and a capacitor reversely. It is a functional block diagram showing the functional structure of the RFID tag circuit element by the modification which performs impedance adjustment without using a fuse. It is a functional block diagram showing the functional structure of the RFID tag circuit element of the modification which connected the floating gate type field effect transistor and the antenna in series. A diagram conceptually showing an embodiment of the present invention in which an antenna is used as an antenna for both access and matching, and conceptually shows a case where an access antenna is provided inside the cartridge and a matching dedicated antenna is provided outside the cartridge. FIG. 3 is a diagram conceptually showing a case where an access antenna is provided outside the cartridge and a matching dedicated antenna is provided inside the cartridge.

Explanation of symbols

2 Tag label production device 10 Print head (printing means)
12 Pressure roller drive shaft (drive means)
14 Antenna (device side antenna)
21 High-frequency circuit 22 Signal processing circuit (information access means, reply signal receiving means)
30 control circuit (determination means, impedance control signal output means,
(Device side first control means, device side second control means)
32 Transmitter (information access means)
33 Receiver (Reply signal receiving means)
48 RSSI circuit (signal strength detection means)
101 Base tape (tag tape)
151 IC circuit section 152 Antenna (tag side antenna)
155 Control circuit / memory (cutting control means, impedance control hand
Stage, first non-volatile storage means, tag side first
Control means; element control means, impedance
Control means, second non-volatile storage means,
Second control means)
C1-4 capacitor (reactance element, impedance control means)
CP capacitor (reactance element, impedance control means)
F11-42 fuse (impedance control means)
LP coil (reactance element, impedance control means)
T wireless tag label To wireless tag circuit element To-1 wireless tag circuit element To-2 wireless tag circuit element t11-42 FET (cutting control means, current application means for fuse control, a
Impedance control means)
tA FET (element control means, impedance control means)
tB, tC FET (element control means, impedance control means)
ttA FET (impedance control means)
ttB, ttC FET (impedance control means)

Claims (12)

A wireless tag circuit element that includes an IC circuit unit that stores information and a tag-side antenna connected to the IC circuit unit, and transmits and receives information.
The IC circuit unit is
The impedance is variably set according to the input signal from the outside , and equipped with impedance control means for holding the setting state in a nonvolatile manner ,
The impedance control means includes
A plurality of reactance elements connected in parallel to the tag-side antenna;
A plurality of fuses respectively connected in series to the plurality of reactance elements;
In accordance with an external input signal, the cutting control means capable of individually cutting the plurality of fuses,
The cutting control means includes
Tag-side first control means for outputting a control signal in accordance with an external input signal, and fuse control current capable of supplying a fusing current to the fuse in accordance with the control signal from the tag-side first control means An RFID circuit element, comprising: an applying means . A wireless tag circuit element that includes an IC circuit unit that stores information and a tag-side antenna connected to the IC circuit unit, and transmits and receives information.
The IC circuit unit is
The impedance is variably set according to the input signal from the outside, and equipped with impedance control means for holding the setting state in a nonvolatile manner,
The impedance control means includes
A plurality of reactance elements connected in parallel to the tag-side antenna;
A plurality of fuses respectively connected in series to the plurality of reactance elements;
In accordance with an external input signal, the cutting control means capable of individually cutting the plurality of fuses ,
The cutting control means includes
A wireless tag circuit element, comprising: first nonvolatile storage means for storing information on the number or location of the plurality of fuses that can be cut . In the RFID circuit element according to claim 1 or 2,
2. The RFID circuit element according to claim 1, wherein the reactance element is a capacitor. A wireless tag circuit element that includes an IC circuit unit that stores information and a tag-side antenna connected to the IC circuit unit, and transmits and receives information.
The IC circuit unit is
The impedance is variably set according to the input signal from the outside, and equipped with impedance control means for holding the setting state in a nonvolatile manner,
The impedance control means includes
A reactance element connected to the tag-side antenna;
A storage switch element connected in series or in parallel with respect to the tag side antenna;
An element control means capable of controlling the memory switch element in response to an external input signal;
The memory switch element is
A floating gate field effect transistor,
The element control means includes
Second non-volatile storage means for storing information on the charge amount or charge amount level of the floating gate field effect transistor is provided.
A wireless tag circuit element characterized by the above. The RFID circuit element according to claim 4 , wherein
The element control means includes
Tag-side second control means for outputting a control signal in response to the external input signal;
An RFID circuit element comprising: charge injection means capable of generating a predetermined charge in the floating gate field effect transistor in response to the control signal from the tag side second control means. An IC circuit unit having impedance control means that is arranged on a tag tape and variably sets impedance according to an input signal from the outside and holds the set state in a nonvolatile manner, and a tag side antenna connected to the IC circuit unit A device-side antenna that transmits and receives information by wireless communication with the wireless tag circuit element;
Information access means for generating access information to the IC circuit unit, transmitting the information to the RFID circuit element via the device-side antenna, and accessing the IC circuit unit;
Reply signal receiving means for receiving a reply signal returned from the RFID circuit element according to the access information by the information access means via the device-side antenna;
From the reply signal received by the reply signal receiving means, a judging means for determining a matching state between the impedance of the IC circuit unit and the impedance of the tag side antenna;
Tag label production comprising: impedance control signal output means for outputting a control signal for setting impedance to the impedance control means of the IC circuit unit of the RFID circuit element based on the determination result of the determination means apparatus. In the tag label producing apparatus according to claim 6 ,
The determination means is configured such that when the information access means performs transmission to the RFID circuit element with a predetermined signal strength, and the reply signal is received by the reply signal receiving means, the impedance of the IC circuit unit And a tag label producing apparatus, wherein a matching completion state between the impedance of the tag side antenna and the tag side antenna is determined. In the tag label producing apparatus according to claim 6 ,
Signal strength detecting means for detecting the signal strength of the reply signal received by the reply signal receiving means;
The determination means performs transmission to the RFID circuit element with a predetermined signal strength by the information access means, and the signal strength of the reply signal detected by the signal strength detection means exceeds a predetermined threshold value. Then, the tag label producing apparatus is characterized in that it is determined that the matching between the impedance of the IC circuit section and the impedance of the tag antenna is completed. The tag label producing apparatus according to any one of claims 6 to 8 ,
Drive means for paying out the tag tape;
A tag label producing apparatus comprising: a printing unit that prints on a predetermined area of the tag tape. In the tag label production apparatus according to claim 9 ,
An apparatus for controlling the driving means, the judging means, and the impedance control signal output means so as to output the judgment and the control signal for setting the impedance corresponding to the judgment when the feeding of the tag tape is stopped. A tag label producing apparatus comprising first side control means. In the tag label production apparatus according to claim 9 ,
The printing means, the judging means, and the impedance control signal output so as to output the control signal for the judgment and the impedance setting according to the judgment before printing on a predetermined area of the tag tape is started. A tag label producing apparatus comprising apparatus-side second control means for controlling the means. In the tag label production apparatus according to claim 9 ,
The printing unit, the determination unit, and the impedance control signal output unit are configured to output the control signal for the determination and the impedance setting according to the determination after the printing on the predetermined area of the tag tape is completed. A tag label producing device comprising a device-side third control means for controlling.

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