JP2005135074A - Radio tag circuit element and radio tag information communication apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reliably access only a specific radio tag circuit element positioned in an access position. <P>SOLUTION: The radio tag circuit element 10A comprises a memory part 115 for storing radio tag information, an antenna part 101 for receiving access information for accessing the memory part 115, by radio communication, from a radio tag information communication apparatus 2, conductive terminals 102A and 102B for detecting whether or not the antenna part 101 is positioned in a predetermined access position in the radio tag information communication apparatus 2, and a control part 113 for controlling access to the memory part 115 in dependence on the detection result of the conductive terminals 102A and 102B when the antenna part 101 receives the access information. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wireless tag circuit element provided in a wireless tag capable of exchanging information with the outside by wireless communication, and a wireless tag information communication apparatus that reads or writes information from / to the outside.

  An RFID (Ratio Frequency Identification) system that reads / writes information in a non-contact manner between a small wireless tag and a reader (reading device) / writer (writing device) is known. For example, a wireless tag circuit element provided in a label-like wireless tag includes an IC circuit unit that stores predetermined information and an antenna unit that is connected to the IC circuit unit and transmits and receives information. Even if it is dirty or placed in an invisible position, information can be read / written from / to the IC circuit section from the reader / writer side, and various fields such as product management and inspection processes can be performed. Is expected to be put to practical use.

  In communication with wireless tags, the 125 KHz band that has been used for a long time and the 13.56 MHz band that has been used for a long time have been used. However, since those using these bands have a short communication distance, there is a problem that the use as a wireless tag is limited. Therefore, in the future, use of a high frequency such as UHF band (868 MHz band, 915 MHz band, 2.45 GHz band, etc.) that is widely used in Europe and the United States is being considered as a frequency band. When such a high-frequency band is used, as it is, not only the RFID circuit element that is an original access (information read or write) target but also the IC of other succeeding RFID tag circuit elements as the communication distance becomes long. There is a possibility that information is read or written to the circuit portion.

  As a conventional technique in consideration of prevention of such erroneous reading or erroneous writing, only the RFID circuit element that is an original access target can be accessed (in this example, writing), and other RFID tag circuit elements are provisionally provisionally. A technique for prohibiting access (in this example, writing) (sleep state) has already been proposed (see, for example, Patent Document 1).

  In this prior art, a rectangular tag label on which a RFID circuit element is formed is connected in a strip shape so as to be separable later. In this state, it is continuously supplied from one side to a predetermined information access position. Each tag label is formed by being sequentially separated from the tag label.

  At the time of the supply, a part of each RFID tag circuit element is short-circuited by a short circuit that is to be broken later, thereby prohibiting writing to the storage means (sleep state). At this time, the short circuit is formed in advance so as to straddle the separation position between the respective tag labels (in detail, the short circuit of the RFID tag circuit element of a certain tag label is separated from the adjacent tag label in the supply direction) Formed). At the time of supply, when a tag label adjacent to the front side in the supply direction of each tag label is cut off, a part of the short circuit related to the RFID tag circuit element of the tag label at the cut off position is broken and the short circuit disappears. Thus, only the RFID tag circuit element of the tag label (the tag label positioned at the front end in the supply direction at this time) that is no longer short-circuited is released from the write prohibition and can be written (activated).

JP 2002-230499 A (paragraph numbers 0012 to 0021, FIGS. 1 and 2)

  In the above-described prior art, the adjacent tag label is broken and separated by using a cutter (or by providing a perforation at the separation position and manually cutting by an operator). That is, the short circuit of the label connection part is cut by a cutter (or manual operation) outside the RFID circuit element that is not directly related to the original access (information writing in this example) part (IC circuit part of the RFID circuit element). However, the structure is designed to activate. For this reason, it is necessary to perform complicated control such as cooperation between the cutter operation (or manual operation operation) speed and the supply speed of the tag label connected in a strip shape, and accurate positioning of the cutting position. As a result, the reliability of preventing erroneous access to the RFID tag circuit elements other than the access position is not necessarily sufficient.

  An object of the present invention is to provide a wireless tag circuit element and a wireless tag information communication apparatus capable of reliably accessing only a specific wireless tag circuit element located at an access position.

  In order to achieve the above object, a first invention provides a storage means for storing wireless tag information and a receiving antenna for receiving access information for accessing the storage means from a wireless tag information communication apparatus by wireless communication. Detection means for detecting whether or not the reception antenna is located at a predetermined access position in the RFID tag information communication apparatus, and when the access information is received by the reception antenna, the detection result of the detection means And an access control means for controlling access to the storage means.

  When access is made to the storage means of the RFID tag circuit element in the RFID tag information communication apparatus, for example, the RFID tag circuit elements are sequentially taken out from the RFID tag circuit element storage unit, and the apparatus side that transmits access information for access It is transported to a predetermined access position facing the antenna. In the first invention of the present application, the detecting means detects whether or not the receiving antenna is located at the access position. And according to the detection result, access to the storage means of the access information received by the receiving antenna in the RFID circuit element is controlled. Thus, for example, when the detection means detects that the reception antenna is not located at the access position, access to the storage means is prohibited (read-inhibition or write-inhibition mode), and the detection means receives the reception antenna at the access position. Only when it is detected that is located, access to the storage means is permitted without being prohibited (read permission or write permission mode). In this way, even when wireless communication using a high frequency such as UHF band is performed and the communication distance becomes long, only the RFID circuit element that should be accessed and that has been transported to the access position is allowed to be read or written. The RFID circuit element other than that can be set in a state (activated state) and in a read-inhibited state or a write-inhibited state (inactivated state; hibernating state), thereby preventing erroneous access (incorrect reading or erroneous writing). it can. Particularly, at this time, the RFID tag circuit element itself has a function of detecting whether or not it has reached the access position and an activation function based on this function, so that a cutter or a manual sewing machine outside the RFID circuit element that is remote from the access position. Since there is no need for coordination or complicated control between the RFID tag circuit element side and the external cutter or operator side as in the conventional structure in which the RFID tag circuit element is activated by eye separation, a specific radio located at the access position Only the tag circuit element can be reliably accessed.

  According to a second invention, in the first invention, the detection means detects an object to be detected provided at the predetermined access position.

  It is possible to detect whether or not the receiving antenna of the RFID tag circuit element is at the access position by providing an object to be detected at the access position of the RFID tag information communication apparatus and detecting means detecting the detected object. .

  According to a third invention, in the first or second invention, the access control means prohibits access to the storage means of the access information received by the reception antenna in accordance with a detection result of the detection means. Or whether to prohibit access.

  According to the detection result of the detection means, access to the storage means is prohibited or not prohibited by switching on the RFID circuit element side, thereby reading or writing only to a specific RFID circuit element located at the access position. It becomes possible.

  According to a fourth aspect of the present invention, in the first or second aspect, the access control means receives the signal received by the reception antenna when the detection means detects that the reception antenna is not located at the access position. Access to the storage means of access information is prohibited, and when the detection means detects that the reception antenna is located at the access position, the access information received by the reception antenna is stored in the storage means. It is characterized by not prohibiting access.

  As a result, the RFID circuit element that has been transported to the access position can be read or written to the storage means, and otherwise the read or write to the storage means cannot be performed. Therefore, the specific RFID circuit that is located at the access position Reading or writing can be reliably performed only on the element.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the detection unit includes a pair of conductive terminals that are short-circuited in contact with a conductive portion provided at the predetermined access position. It is characterized by.

  When the RFID circuit element is transported to the access position, the conductive terminal comes into contact with the conductive portion, so that the conductive portion can be detected. Accordingly, the access control means can control access to the storage means for the access information received by the receiving antenna.

  According to a sixth invention, in any one of the first to fourth inventions, the detection means includes a pair of electrodes whose capacitance is changed by a conductor or a dielectric provided at the predetermined access position. And a capacitance detection circuit for detecting the capacitance between the electrodes.

  When the RFID circuit element is conveyed to the access position, the capacitance between the electrodes changes due to the conductor or the dielectric, and this is detected by the capacitance detection circuit. Accordingly, the access control means can control access to the storage means for the access information received by the receiving antenna.

  In a sixth aspect based on the sixth aspect, the electrode is also used as a pair of the receiving antennas, and the capacitance detection circuit detects a capacitance between the pair of receiving antennas.

  By using the electrode and the receiving antenna in common, it is not necessary to provide a separate electrode for detection, and an increase in size can be prevented and cost can be reduced.

  In an eighth aspect based on the sixth aspect, the capacitance detection circuit calculates the intensity of the radio signal received by the receiving antenna and the intensity of the radio signal received by the receiving antenna and further via the pair of electrodes. A comparison circuit for comparison is included.

  The strength when the electrode is interposed in the radio signal received by the receiving antenna is low because the electrostatic capacitance between the electrodes is small before the RFID circuit element is transported to the access position. Smaller than. On the other hand, when the RFID circuit element is transported to the access position, the capacitance between the electrodes is increased by the conductor or the dielectric, so that the intensity of the radio signal received by the receiving antenna is almost the same. As a result, the comparison circuit compares the strength of the radio signal received by the receiving antenna with the strength of the radio signal received by the receiving antenna and via the pair of electrodes. When the element is not in the access position and both are substantially equal, it can be detected that the RFID circuit element has been transported to the access position.

  According to a ninth invention, in any one of the first to fourth inventions, the detecting means detects a state quantity of the RFID circuit element at the predetermined access position or a state quantity relating to the surrounding environment. It is a detection means.

  When the RFID tag circuit element is conveyed to the access position, the state quantity (magnetic resistance, strain, etc.) of the RFID tag circuit element itself or the state quantity (temperature, pressure, etc.) related to the surrounding environment changes. It is detected by the detection means. Thereby, the access control means can control access to the storage means of the access information received by the receiving antenna accordingly.

  According to a tenth aspect, in the ninth aspect, the state quantity detection unit includes a magnetoresistive element whose electric resistance is changed by magnetism from the magnetism generation unit provided at the predetermined access position. .

  When the RFID circuit element is transported to the access position, the electric resistance of the magnetoresistive element is changed by the magnetism generating means. Accordingly, the access control means can control access to the storage means for the access information received by the receiving antenna.

  In an eleventh aspect based on the ninth aspect, the state quantity detecting means includes a temperature sensor for detecting a specific temperature environment at the predetermined access position.

  When the RFID circuit element is brought to the access position and a specific temperature environment is reached, this is detected by the temperature sensor. Thereby, the access control means can control access to the storage means of the access information received by the receiving antenna accordingly.

  In a twelfth aspect based on the ninth aspect, the state quantity detection means includes a pressure sensor for detecting a specific pressure environment at the predetermined access position.

  When the RFID circuit element is conveyed to the access position and a specific pressure environment is reached, this is detected by the pressure sensor. Thereby, the access control means can control access to the storage means of the access information received by the receiving antenna accordingly.

  In a thirteenth aspect based on the ninth aspect, the state quantity detection means includes a strain gauge.

  When the RFID circuit element is conveyed to the access position and bent by, for example, a roller or the like, distortion caused by the bending is detected by a strain gauge. Thereby, the access control means can control access to the storage means of the access information received by the receiving antenna.

  To achieve the above object, according to a fourteenth aspect of the present invention, there is provided an access information generating unit for generating predetermined access information, and the generated predetermined access information transmitted for access, connected to the access information generating unit. A device-side antenna unit and a receiving antenna that receives information transmitted from the device-side antenna unit in a non-contact manner by wireless communication; a storage unit that is connected to the receiving antenna and stores RFID tag information; Detection means for detecting whether or not the reception antenna is located; access control means for controlling access to the storage means of the access information received by the reception antenna according to a detection result of the detection means; A plurality of RFID circuit elements, and a RFID circuit element storage portion configured to be sequentially removable, and the RFID circuit elements Vignetting said receiving antenna and having an object to be detected which is provided for detecting on whether the detection means positioned in the predetermined access position.

  When reading or writing is performed on the RFID tag circuit element, the RFID tag circuit elements are sequentially taken out from the RFID tag circuit element storage unit, and a predetermined access facing the device-side antenna that transmits access information for access. Transported to position. In the fourteenth invention of the present application, an object to be detected is provided at this access position, and the object to be detected is detected by a detecting means provided on the RFID tag circuit element side. And according to the detection result, access to the storage means of the access information received by the receiving antenna in the RFID circuit element is controlled. Thereby, for example, when the detection means does not detect the detected object, access to the storage means is prohibited (reading prohibition or writing prohibited mode), and only when the detection means detects the detected object. Access to the storage means can be permitted without being prohibited (read permission or write permission mode). In this way, even when wireless communication using a high frequency such as UHF band is performed and the communication distance becomes long, only the RFID circuit element that should be accessed and that has been transported to the access position is allowed to be read or written. The RFID circuit element other than that can be set in a state (activated state) and in a read-inhibited state or a write-inhibited state (inactivated state; hibernating state), thereby preventing erroneous access (incorrect reading or erroneous writing). it can. Particularly, at this time, the RFID tag circuit element itself has a function of detecting whether or not it has reached the access position and an activation function based on this function, so that a cutter or a manual sewing machine outside the RFID circuit element that is remote from the access position. Since there is no need for coordination or complicated control between the RFID tag circuit element side and the external cutter or operator side as in the conventional structure in which the RFID tag circuit element is activated by eye separation, a specific radio located at the access position Only the tag circuit element can be reliably accessed.

  In a fifteenth aspect based on the fourteenth aspect, the access control means of the RFID circuit element accesses the storage means of the access information received by the reception antenna according to a detection result of the detection means. Switching between prohibiting access and prohibiting access.

  According to the detection result of the detection means, access to the storage means is prohibited or not prohibited by switching on the RFID circuit element side, thereby reading or writing only to a specific RFID circuit element located at the access position. It becomes possible.

  In a sixteenth aspect based on the fifteenth aspect, the access control means of the RFID circuit element includes the access information received by the receiving antenna in a state where the detection means does not detect the detected object. Access to the storage means is prohibited, and access to the storage means of the access information received by the receiving antenna is not prohibited in a state where the detection object is detected by the detection means.

  As a result, the RFID circuit element that has been transported to the access position can be read or written to the storage means, and otherwise the read or write to the storage means cannot be performed. Therefore, the specific RFID circuit that is located at the access position Reading or writing can be reliably performed only on the element.

  According to a seventeenth aspect of the present invention, in any one of the fourteenth to sixteenth aspects, the detected object includes a conduction portion for contacting the detection means of the wireless tag circuit element, and the wireless tag The detection means of the circuit element includes a pair of conductive terminals that are short-circuited by contacting the conductive portion.

  When the RFID circuit element is transported to the access position, the conductive terminal comes into contact with the conductive portion, so that the conductive portion can be detected. Accordingly, the access control means can control access to the storage means for the access information received by the receiving antenna.

  In an eighteenth aspect based on the seventeenth aspect, the object to be detected includes a pressing unit that presses the conducting portion toward the detecting unit.

  Thereby, when the RFID circuit element is transported to the access position, the conductive portion can be brought into contact with each other and the conductive terminal can be short-circuited.

  According to a nineteenth aspect of the present invention, in any one of the fourteenth to sixteenth aspects, the detected object includes a conductor or a dielectric provided at the predetermined access position, and the RFID circuit element The detection means includes a pair of electrodes whose capacitance is changed by the conductor or the dielectric, and a capacitance detection circuit that detects the capacitance between the electrodes.

  When the RFID circuit element is conveyed to the access position, the capacitance between the electrodes changes due to the conductor or the dielectric, and this is detected by the capacitance detection circuit. Accordingly, the access control means can control access to the storage means for the access information received by the receiving antenna.

  In a twentieth aspect according to any one of the fourteenth to sixteenth aspects, the detection unit of the RFID circuit element includes a state quantity of the RFID circuit element at the predetermined access position or a state related to an ambient environment. It is a state quantity detection means for detecting the quantity.

  When the state quantity of the RFID tag circuit element itself or the state quantity related to the surrounding environment changes due to the RFID tag circuit element being transported to the access position, this is detected by the state quantity detection means. Thereby, the access control means can control access to the storage means of the access information received by the receiving antenna accordingly.

  According to the present invention, it is possible to reliably access (read or write) only a specific RFID tag circuit element located at the access position.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The present embodiment is an embodiment in the case where the present invention is applied to a wireless tag generation system capable of only reading (not writing).

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

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

  FIG. 2 is a conceptual configuration diagram showing a detailed structure of the RFID tag information communication apparatus 2.

  In FIG. 2, the RFID tag information communication apparatus 2 has a plurality of RFID tag circuit elements 10A and a detachable cartridge (RF tag circuit element accommodation portion) 20 configured to be able to sequentially take them out. ing.

  FIG. 3 is a view showing the detailed structure of the cartridge 20 as viewed from the direction III in FIG.

  3 and FIG. 2 described above, the cartridge 20 is wound with a belt-like base tape (tape label material) 21 in which a plurality of RFID circuit elements 10A are sequentially formed in the longitudinal direction (details will be described later). In addition, a first roll (reel member) 22, a second roll 24 around which a transparent cover film 23 having the same width as the base tape 21 is wound, and an ink around which a printing ink ribbon 25 is wound. The ribbon roll 26, the take-up roller 27 for taking up the ink ribbon 25 after printing, and the base tape 21 and the cover film 23 are pressed and bonded together to form a tag tape 28, and the tape is fed in the direction indicated by the arrow. The pressure roller 29 to be rotated is provided so as to be able to rotate about each axis. In addition, although the base tape 21 and the cover film 23 are schematically shown as concentric circles in FIG. 3, they are actually spirally wound around a core. Of these, the take-up roller 27 and the pressure roller 29 are rotationally driven by the driving force of a cartridge motor 30 (see FIG. 2), for example, a pulse motor provided outside the cartridge. The driving of the cartridge motor 30 is controlled by a cartridge driving circuit 31 (see FIG. 2).

  The base tape 21 has a four-layer structure as shown in a partially enlarged view in FIG. 3, and is directed from the side (the right side in FIG. 3) to which the cover film 23 is later adhered to the opposite side (the left side in FIG. 3). Then, an adhesive layer 32, a colored base film 33 made of PET (polyethylene terephthalate), an adhesive layer 34, and a release paper 35 are laminated in this order. The base tape 21 and the first roll 22 constitute a wireless tag circuit element housing.

  The IC circuit unit 100 is integrally provided on the back side (left side in FIG. 3) of the base film 33, and the antenna unit (reception antenna) 101 is formed on the back side surface of the base film 33. The RFID circuit element 10A is configured by the IC circuit unit 100, the antenna unit 101, and conductive terminals 102A and 102B described later (see also FIG. 8 described later).

  FIG. 4 is a functional block diagram showing a functional configuration of the RFID circuit element 10A.

  In FIG. 4, the RFID circuit element 10A includes an antenna 40 (details will be described later) provided in the RFID tag information communication apparatus 2 and the antenna unit (not shown) that transmits and receives signals in a contactless manner using a high frequency such as a UHF band. A tag side antenna unit) 101, the IC circuit unit 100 connected to the antenna unit 101, and the conductive terminals 102A and 102B.

  The IC circuit unit 100 includes a rectifying unit 111 that rectifies a carrier wave received by the antenna unit 101, a power source unit 112 that accumulates energy of the carrier wave rectified by the rectifying unit 111, and serves as a driving power source, and the antenna unit. 101, a clock extraction unit 114 that extracts a clock signal from the carrier wave received by 101 and supplies it to a control unit 113 (described later), a memory unit 115 that functions as a storage unit that can store an information signal (wireless tag information), and A modulation / demodulation unit 116 connected to the antenna unit 101, and a control unit 113 for controlling the operation of the RFID circuit element 10A through the rectification unit 111, the clock extraction unit 114, the modulation / demodulation unit 116, and the like. Yes.

  The modem unit 116 demodulates the communication signal received from the antenna 40 of the RFID tag information communication apparatus 2 received by the antenna unit 101 and received from the antenna unit 101 based on the return signal from the control unit 113. Reflectively modulate the carrier wave.

  The control unit 113 interprets the received signal demodulated by the modulation / demodulation unit 116, generates a reply signal based on the information signal stored in the memory unit 115, and performs basic operations such as control for returning by the modulation / demodulation unit 116. Execute proper control. In the present embodiment, the IC circuit unit 100 is configured to be capable of only reading (not writing) information stored in the memory unit 115 via the control unit 113.

  The conductive terminal 102A and the conductive terminal 102B are connected to the control unit 113, respectively. Normally, the control unit 113 prohibits access to the wireless tag information in the memory unit 115 (in this example, refer to a later-described modification for reading and writing) (makes the function dormant), while the conductive terminal 102A and the conductive tag 102A When the terminal 102B is short-circuited (see the broken line in FIG. 4, details will be described later), the control unit 113 detects this and releases the above-mentioned access prohibition on the RFID tag information in the memory unit 115 (activates the function). (Details will be described later).

  5 is a horizontal sectional view taken along the line VV in FIG. 3, and FIG. 6 is a transverse sectional view taken along the line VI-VI in FIG.

  5, FIG. 6, and FIG. 3 described above, the adhesive layer 32 for later bonding the cover film 23 is formed on the front side of the base film 33 (right side in FIG. 3, upper side in FIG. 6). The release paper 35 is bonded to the base film 33 by the adhesive layer 34 on the back side of the base film 33. The release paper 35 is configured such that when the completed wireless tag 10 is affixed to a predetermined product or the like, it can be adhered to the product or the like by the adhesive layer 34 by peeling it off.

  In the width direction center part of the release paper 35 and the adhesive layer 34, a groove 103 in which the thickness direction of the base tape 21 is a depth direction is formed, in other words, the release paper 35 and the adhesive layer 34 are formed by the groove 103. Separated left and right in the width direction. Further, the groove 103 is extended substantially in a straight line in the longitudinal direction of the base tape 21 (see also FIG. 11B described later). At this time, as shown in FIG. 5, the rear end of the antenna 101 on the front side in the supply direction (lower side in FIG. 3, right side in FIG. 5) and the rear side in the supply direction (upper side in FIG. 3, left side in FIG. 5) The IC circuit portion 100 is provided so as to connect the front end portion of the antenna 101 in the width direction of the base tape 21. As shown in FIG. 6, the conductive terminals 102 </ b> A and 102 </ b> B are provided so as to protrude from the IC circuit portion 100 into the groove 103 so as to be positioned between the antennas 101 and 101 connected in the width direction. .

  Returning to FIG. 3, the ink ribbon roll 26 and the take-up roller 27 are arranged on the back side of the cover film 23, that is, the side to be bonded to the base tape 21. At this time, in the vicinity of the cartridge 20, a thermal head 41 that is energized by the print drive circuit 42 (see FIG. 2) and performs printing (printing) on the cover film 23 is provided, and the ink ribbon 25 is connected to the thermal head 41. Is pressed against the back surface of the cover film 23.

  In such a configuration, the winding roller 27 and the pressure roller 29 are rotated in synchronization with each other in the directions indicated by the arrows by driving the cartridge motor 30, and a plurality of heat generation of the thermal head 41 is performed by the print driving circuit 42. The element is energized. Thereby, the print 43 (refer FIG. 8 and FIG. 11 (a) mentioned later) of predetermined characters, symbols, barcodes, etc. on the back surface of the cover film 23 (= the surface on the adhesive layer 32 side, see FIG. 8 described later). Printing is performed (however, since characters are printed from the back side, characters to be mirrored are printed from the printing side). After this printing, the pressure-sensitive roller 29 is bonded to the base tape 21 to form the tag tape 28, and is unwound from the cartridge 20 through the conveyance guide 83 and is carried out.

  Further, referring back to FIG. 2, the RFID tag information communication apparatus 2 performs the above-described RFID circuit element 10 </ b> A included in the tag tape 28 with respect to the tag tape 28 passing through the conveyance guide 83 in association with the printing operation. Between the antenna (device-side antenna unit) 40 for transmitting and receiving signals by radio communication using a high frequency such as a UHF band, and information (wireless tag) of the IC circuit unit 100 of the RFID circuit element 10A via the antenna 40 Information) (reading is performed in this example) and the signal read from the IC circuit unit 100 of the RFID circuit element 10A are processed to read the information and the RFID circuit element 10A A signal processing circuit 52 that also functions as an access information generation unit for accessing the IC circuit unit 100, the cartridge drive circuit 31, A control circuit 60 for controlling the overall operation of the RFID tag information communication apparatus 2 through the printing drive circuit 42, the high-frequency circuit 51, the signal processing circuit 52, a solenoid drive circuit 88 and a delivery roller drive circuit 90 described later, and the like. I have.

  The control circuit 60 is a so-called microcomputer, and although not shown in detail, is composed of a central processing unit such as a CPU, a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and is temporarily stored in the RAM. The signal processing is performed according to a program stored in advance in the ROM while using the function. The control circuit 60 is connected to the communication line 3 by an input / output interface 61, and can exchange information with the route server 4, the terminal 5, the general-purpose computer 6, the information server 7, and the like. Yes.

  FIG. 7 is a functional block diagram showing detailed functions of the high-frequency circuit 51.

  In FIG. 7, the high-frequency circuit 51 receives a transmission unit 53 that transmits a signal to the RFID circuit element 10 </ b> A via the antenna 40 and a reflected wave from the RFID circuit element 10 </ b> A that is received by the antenna 40. And a transmission / reception separator 55.

  The transmission unit 53 includes a crystal oscillation circuit 56 that functions as a carrier wave generation unit that generates a carrier wave for accessing (reading in this example) the RFID tag information of the IC circuit unit 100 of the RFID circuit element 10A, and the signal A first multiplication circuit 71 ("" that functions as a carrier modulation unit that modulates a carrier wave generated by the carrier wave generation unit based on a signal supplied from the processing circuit 52 (for example, amplitude modulation based on a "TX-ASK" signal). In the case of the “TX-ASK signal”, a variable amplification factor amplifier or the like may be used), and a first amplifier 72 that functions as a modulation wave amplification unit that amplifies the modulation wave modulated by the first multiplication circuit 71. ing. The carrier wave generated by the carrier wave generator is preferably set to a frequency of 300 MHz or higher, and the output of the first amplifier 72 is transmitted to the antenna 40 via the transmission / reception separator 55 to be transmitted to the RFID circuit element 10A. It is supplied to the IC circuit unit 100.

  The receiving unit 54 multiplies the reflected wave from the RFID tag circuit element 10A received by the antenna 40 and the carrier wave generated by the carrier wave generating unit, and the output of the second multiplication circuit 73. A second band pass filter 74 for extracting only a signal of a necessary band from the second band pass filter 74, a second amplifier 76 for amplifying the output of the second band pass filter 74 and supplying the amplified signal to the first limiter 75, and reception by the antenna 40. A third multiplier circuit 77 for multiplying the reflected wave from the RFID circuit element 10A and the carrier wave whose phase is shifted by 90 ° after being generated by the carrier wave generation unit, and necessary from the output of the third multiplier circuit 77 A first band pass filter 78 for extracting only a signal in a wide band, and an output of the first band pass filter 78 is inputted and amplified. And a third amplifier 80 supplied to the second limiter 79. The signal “RXS-I” output from the first limiter 75 and the signal “RXS-Q” output from the second limiter 79 are input to the signal processing circuit 52 and processed.

  The outputs of the second amplifier 76 and the third amplifier 80 are also input to a received signal strength indicator (RSSI) 81 so that a signal “RSSI” indicating the strength of these signals is input to the signal processing circuit 52. It has become. In this way, in the RFID tag information communication apparatus 2 of the present embodiment, the reflected wave from the RFID tag circuit element 10A is demodulated by IQ orthogonal demodulation.

  Returning to FIG. 2 again, the RFID tag information communication apparatus 2 is provided in the vicinity of the outlet portion of the cartridge 20, and reads RFID tag information from the IC circuit portion 100 of the RFID circuit element 10A (in the modified example described later, A cutter 82 that cuts the tag tape 28, which has been described in detail later, to a predetermined length by cutting it into a predetermined length and divides it into label-like wireless tags (wireless tag labels) 24, and a pair of conveyance guides that guide the wireless tags 10 after cutting. (RFID tag circuit element holding unit) 83, a delivery roller 85 that conveys and sends the guided RFID tag 10 to the carry-out port 84, and a sensor 86 that detects the presence / absence of the RFID tag 10 at the carry-out port 84. doing.

  The cutter 82 is driven by a solenoid 87 to perform its cutting operation, and the solenoid 87 is controlled by a solenoid drive circuit 88.

  In addition to the above-described guiding function, the transport guide 83 has a predetermined access area (= reading position, writing) where the RFID circuit element 10A is opposed to the antenna 40 at the time of reading (writing in a modified example described later, details will be described later). In the case of the position, the function of setting and holding in the later-described modification) and the function of activating the RFID tag circuit element 10A from the sleep state are achieved.

  FIG. 8 is a cross-sectional view taken along section VIII-VIII in FIG. 2 showing the detailed cross-sectional structure of the transport guide 83 together with the tag tape 28 being transported.

  8 and FIG. 2 described above, the tag tape 28 having the RFID circuit element 10A has a five-layer structure in which the cover film 23 is added to the four-layer structure shown in FIG. From the upper side in FIG. 8 to the opposite side (lower side in FIG. 8), the cover film 23, the adhesive layer 32, the base film 33, the adhesive layer 34, and the release paper 35 constitute five layers.

  On the other hand, as described above, at least one side (in this example, the release paper 35 side, that is, the right side in FIG. 8, the back side in FIG. 2) of the pair of upper and lower transport guides 83 is made of a conductor (for example, metal). In addition, a rail-like protrusion (conduction portion) 83A corresponding to the groove 103 formed in the central portion in the width direction of the release paper 35 and the adhesive layer 34 of the RFID circuit element 10A described above is provided. As shown in the figure, when the RFID circuit elements 10A are transported, the projections 83A are inserted into the grooves 103 to guide the RFID circuit elements 10A in the transport direction, and in the middle of the guide. The protrusion 83A, which is a conductor, is in contact with both the conductive terminal 102A and the conductive terminal 102B, and short-circuits between them. As described above, the control unit 113 cancels the access prohibition (in this example, read prohibition, and write prohibition in the later-described modification) as a result of this short circuit, and as a result, the wireless unit that has been transported and has reached the position of the transport guide 83 Only the tag circuit element 10A is activated. That is, the conductive terminals 102 </ b> A and 102 </ b> B function as detection means for detecting whether or not the antenna unit 101 is located at a predetermined access position in the wireless tag information communication device 2. Further, the protrusion 83A functions as an object to be detected provided as a detection target of the conductive terminals 102A and 102B at the predetermined access position.

  FIG. 9 is a flowchart showing an access (reading in this example) prohibition (sleeping) processing and its prohibition release (activation) processing function by the control unit 113 of the RFID circuit element 10A.

  In FIG. 9, first, in step S100, a flag relating to short circuit detection of the conductive terminals 102A and 102B is initialized to F = 0 indicating an access (reading in this example) prohibition (sleeping) state. Thereafter, in step S110, it is determined whether the conductive terminal 102A and the conductive terminal 102B are short-circuited.

  This determination is satisfied when the RFID circuit element 10A reaches the position of the transport guide 83 and the conductive terminals 102A and 102B are short-circuited by the protrusion 83A of the transport guide 83, and the flag is accessed in step S120. (Read in this example) F = 1 representing the prohibition release (activation) state is set, and the process proceeds to step S130. If the conductive terminal 102A and the conductive terminal 102B are not short-circuited in step S110, the determination is not satisfied, and the process directly proceeds to step S130.

  In step S130, whether or not a read command signal requesting to start reading information to the memory unit 115 is received from the RFID tag information communication apparatus 2 side (antenna 40) (specifically, as described later, the RFID tag). The “Scroll All ID” command signal as access information generated by the signal processing circuit 52 based on the “Scroll All ID” command output from the control circuit 60 of the information communication apparatus 2 is transmitted to the antenna via the high frequency circuit 51 and the antenna 40. Whether it is received by the unit 101).

  If the “Scroll All ID” command signal is received by the antenna unit 101, this determination is satisfied, and the routine goes to Step S 140 where it is determined whether or not the flag F = 1. If the access is prohibited (sleeping) with the flag F = 0, this determination is not satisfied and this flow is terminated. If the access is permitted (activated) with the flag F = 1, this determination is satisfied, and the process proceeds to step S150 to perform a read process.

  FIG. 10 is a flowchart showing the detailed control contents in step S150.

  In FIG. 10, first, in step S151, the stored contents of the memory unit 115 are read in response to the “Scroll All ID” signal, and in step S152, the RFID tag information communication apparatus 2 side (antenna 40 ).

  After that, in step S153, it is determined again whether or not the “Scroll All ID” command signal is received by the antenna unit 101, as in step S130 described above.

  Here, the RFID tag information to be read by the control circuit 60 of the RFID tag information communication apparatus 2 depends on whether or not the reply signal transmitted in step S152 is only one from the RFID circuit element 10A to be read. It is determined whether or not is obtained normally. However, if it is determined that this reading is not normal (such as the original tag to be read cannot be specified), the RFID tag information communication apparatus 2 again “retrys” reading after a predetermined period in order to retry reading (retry). Since the “Scroll All ID” command signal is transmitted, the determination in step S153 is satisfied, and the process returns to step S151 to repeat the same procedure.

  If it is determined by the control circuit 60 of the wireless tag information communication device 2 that the reading has been completed normally, the “Scroll All ID” command signal is not transmitted from the wireless tag information communication device 2 side. Is not satisfied, this routine is terminated.

  By the above routine, the RFID tag information stored in the memory unit 115 of the IC circuit unit 100 of the RFID circuit element 10A to be accessed can be accessed and read. When the above reading process is completed, the flow shown in FIG. 9 is ended.

  As is clear from the above, when the control unit 113 of the RFID circuit element 10A receives the access information by the antenna unit 115, the storage unit according to the detection result of the detection unit (conductive terminals 102A and 102B). Access control means for controlling access to the (memory unit 115) is configured. In the above operation flow, an example is shown in which the conveyance guide 83 is held and accessed in the access area with respect to the tag tape 28 that is moving in accordance with the printing operation. However, the present invention is not limited to this. That is, the access may be performed while the tag tape 28 is stopped at a predetermined position and held by the conveyance guide 83.

  Returning to FIG. 2 again, the delivery roller 85 is driven by a delivery roller motor 89, and this motor 89 is controlled by a delivery roller drive circuit 90. The sensor 86 is a transmissive photoelectric sensor including a projector and a light receiver, for example. When the wireless tag 10 does not exist between the projector and the light receiver, the light output from the projector is input to the light receiver. On the other hand, when the wireless tag 10 exists between the projector and the light receiver, the light output from the projector is shielded and the control output from the light receiver is reversed.

  FIGS. 11A and 11B are examples of the appearance of the wireless tag 10 formed after information reading (writing in a modification described later, writing in detail) and cutting are completed as described above. 11A is a top view, and FIG. 11B is a bottom view. Note that FIG. 8 described above substantially corresponds to a cross-sectional view taken along line AA in FIG.

  In these FIG. 11 (a), FIG. 11 (b), and FIG. 8 described above, as a result of the wireless tag generation process as described above, the wireless tag 10 has an IC circuit portion 100 and an antenna portion on the back side of the base film 33. A wireless tag circuit element 10 </ b> A composed of 101 is provided, and a print 43 (in this example, “RF-ID” indicating the type of the wireless tag 10) is printed on the back surface of the cover film 23.

  FIG. 12 shows the above-described terminal 5 or general-purpose computer 6 when the RFID tag information communication device 2 as described above accesses (reads in this example) the RFID tag information of the IC circuit unit 100 of the RFID circuit element 10A. It is a figure showing an example of the screen performed.

  In FIG. 12, in this example, the print character 43 printed corresponding to the RFID circuit element 10A, the access (reading in this example) ID that is an ID unique to the RFID circuit element 10A, the information server 7 The stored address of the article information and the storage destination address of the corresponding information in the route server 4 can be displayed on the terminal 5 or the general-purpose computer 6. Then, the RFID tag information communication apparatus 2 is operated by the operation of the terminal 5 or the general-purpose computer 6, and the print characters 43 are printed on the cover film 23 and stored in the memory unit 115 of the IC circuit unit 100 in advance. Radio tag information such as article information is read out. Further, the correspondence between the generated ID of the wireless tag 10 and the wireless tag information stored in the memory unit 115 of the IC circuit unit 100 is stored in the route server 4 and can be referred to as necessary. Yes.

  The operation and action of the present embodiment configured as described above will be described below.

  When the RFID tag information is read from the RFID circuit element 10A in the RFID tag information communication apparatus 2 of the present embodiment, the tag tape 28 including the plurality of RFID tag circuit elements 10A is sequentially unwound from the cartridge 20. The RFID circuit element 10A-1 (see FIG. 2) to be accessed (read target in this example) is a transport guide that is a predetermined access position facing the antenna 40 that transmits access information (the aforementioned Scroll All ID signal). It is conveyed and held at position 83.

  At this time, the protrusion 83A fits into the groove 103 formed in the release paper 35 and the adhesive layer 34 of the RFID circuit element 10A-1, and contacts both the conductive terminal 102A and the conductive terminal 102B. Short-circuit between the two. As a result, due to this short circuit, the control unit 113 sets the flag F = 1 in step S120 of the flow of FIG. 9 and cancels the prohibition of reading information to the memory unit 115. As a result, only the RFID circuit element 10A-1 that has been transported and reached the position of the transport guide 83 is activated so that it can be read from the memory unit 115, and the Scroll All ID signal from the antenna 40 is transmitted. In step S130, the reading process is performed in step S150 through step S140. On the other hand, subsequent RFID circuit elements 10A-2,... Are maintained in a sleep state in which reading from the memory unit 115 is prohibited, so that the RFID tag information communication apparatus 2 side and the RFID tag circuit element 10A side are not connected. The communication distance becomes longer by wireless communication using high frequency such as UHF band, and the antenna unit 115 temporarily receives the Scroll All ID signal from the antenna 40 at the access position (position closer to the transport guide 83). However, since the flag F = 0, the determination in step S140 is not satisfied from step S130, so the reading process is not performed.

  As described above, in the present embodiment, even when wireless communication using a high frequency such as the UHF band is performed, a wireless tag other than the wireless tag circuit element 10A-1 that should be originally accessed (to be read in this example). It is possible to prevent erroneous access (in this example, erroneous reading) to the circuit elements 10A-2,. At this time, in particular, the RFID tag circuit element 10A itself has a function of detecting whether or not the antenna unit 101 has reached the access position and an activation function based on the detection function. Since there is no need for coordination or complicated control between the RFID tag circuit element side and the external cutter or operator side as in the conventional structure in which the RFID circuit element is activated by separating the cutter and manual perforation, the access position is Only the specific RFID circuit element 10A-1 located can be reliably accessed (read in this example).

  In the above embodiment, the antenna portion 101 of the RFID circuit element 10A is detected to be located at the access position by short-circuiting the conductive terminals 102A and 102B by the protrusion 83A of the conveyance guide 83. However, the present invention is not limited to this. The aspect of this may be sufficient. Hereinafter, such modifications will be described in order.

(1) Press contact to conductive terminal FIG. 13 is a diagram showing a detailed cross-sectional structure of the conveyance guide 83 in this modification, and corresponds to FIG. 8 described above. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. As shown in FIG. 13, in this modification, a protruding member 83 </ b> A ′ for contacting and short-circuiting the conductive terminals 102 </ b> A and 102 </ b> B is provided separately from the main body of the conveyance guide 83. The projecting member 83A 'has leg portions 83A'a provided on both side edges thereof penetrating through through holes provided in corresponding portions of the main body of the conveyance guide 83 and engaging the opposite side thereof. It is pressed and urged by pressing means (in this example, a spring) 83B provided on the peripheral side, and is thereby pressed against the conductive terminals 102A and 102B.

  According to this modification, when the RFID circuit element 10A-1 to be accessed has been transported to the transport guide 83 position as the access position, the conductive terminals 102A and 102B are securely brought into contact with the protruding member 83A ′. Thus, the conductive terminals 102A and 102B can be short-circuited.

(2) Capacitance detection type In other words, a pair of electrodes constituting a capacitor is provided on the RFID circuit element 10A side, and it is detected that the capacitance between these electrodes increases due to the approach / contact of the conveyance guide 83, etc. It is.

  FIG. 14 is a functional block diagram showing a functional configuration of the RFID circuit element 10A according to this modification, and is a diagram substantially corresponding to FIG. 4 described above. The same parts as those in the above embodiment are denoted by the same reference numerals, and description thereof will be omitted as appropriate. The RFID circuit element 10A shown in FIG. 14 includes an antenna portion 101, an IC circuit 100A, and a pair of electrodes 104A and 104B. Further, the IC circuit unit 100A newly includes a capacitance detection (detection) circuit 117 that detects the capacitance between the electrodes 104A and 104B.

  Although not shown in detail, the electrodes 104A and 104B are connected to the capacitance detection circuit 117, respectively. The capacitance detection circuit 117 outputs a detection signal (ON signal described later) to the control unit 113 at the normal time when there is no conductor or dielectric between the electrodes 104A and 104B and the capacitance is small. In response to this, the unit 113 prohibits access to the RFID tag information in the memory unit 115 (refer to a later-described modification for reading and writing in this example) (makes the function dormant). On the other hand, when a conductor or dielectric B (see FIG. 14) is present between the electrodes 104A and 104B and the capacitance increases (capacity increase is detected), a detection signal to that effect (OFF described later) Signal) is output to the control unit 113, and the control unit 113 cancels the access prohibition to the memory unit 115 (activates the function) accordingly (details will be described later).

  FIG. 15 is a circuit diagram showing a detailed configuration of the capacitance detection circuit 117. In FIG. 15, a capacitance detection circuit 117 includes a clock circuit 117A connected to one of the electrodes 104A and 104B, a differentiation circuit 117B connected to the other electrode 104B, and an amplification circuit 117C. , A detection circuit 117D and a comparison circuit 117E are provided.

  FIGS. 16A to 16D show changes in signal waveforms in the “a” portion, “b” portion, “c” portion, and “d” portion of the capacitance detection circuit 117 shown in FIG. It is a representation. Hereinafter, the function of each part of the capacitance detection circuit 117 will be described with reference to FIG. 16 and FIG. 15 described above.

  The clock circuit 117A outputs a signal waveform (rectangular wave) at a predetermined operating frequency fo (see FIG. 16A), and this waveform is supplied to the electrode 104A on one side.

  This waveform is further supplied to the differentiating circuit 117B from the electrode 104B separated from the electrode 104A by a predetermined capacity. The differentiation circuit 117B performs amplification according to a predetermined frequency characteristic. FIG. 17 is a diagram illustrating an example of the amplification characteristic.

  In FIG. 17, the frequency f-amplification degree A characteristic of the differentiating circuit 117B becomes a characteristic curve of constant amplification after a certain frequency after rising linearly on the low frequency side. The characteristic curve behaves to slide in the left-right direction in the figure according to the magnitude of the capacitance C between the electrodes 104A and 104B. For example, when the characteristic line of the differentiation circuit 117B is a small capacitance C1 that does not exist between the electrodes 104A and 104B, it is represented by FA1, and a large capacitance C2 in which a conductor or dielectric B exists between the electrodes 104A and 104B. If it is expressed by FA2 at this time, the amplification factor of the signal of the frequency fo will be increased from A1 to A2.

  As a result, the signal waveform at the position b obtained by further amplifying the output of the differentiating circuit 117B by the amplifier circuit 117C is compared when the small capacity C1 does not exist between the electrodes 104A and 104B, as shown in FIG. On the other hand, in the case of a large capacity C2 in which a conductor or dielectric B is present between the electrodes 104A and 104B, a sine wave waveform having a relatively large amplitude is obtained.

  The result of rectifying these by the detection circuit 117D having a diode is FIG. 16 (c) showing the waveform at the position c, and there is nothing between the electrodes 104A and 104B corresponding to the magnitude of the amplitude. It is represented by a low voltage signal (Low signal) when it has a small capacitance C1, and a high voltage signal (High signal) when it has a large capacitance C2 in which a conductor or dielectric B exists between the electrodes 104A and 104B.

  Then, the comparison circuit 117E subtracts the output signal (Low signal or High signal) from the detection circuit 117D from the constant voltage signal generated from the VCC power supply and inputs it to the control unit 113 as the final output signal. As a result, a relatively high voltage High signal (= ON signal) is present when there is a small capacitance C1 that does not exist between the electrodes 104A and 104B, and a large capacitance where a conductor or dielectric B exists between the electrodes 104A and 104B. When C 2, a signal (= OFF signal) substantially close to the ground voltage is input to the control unit 113.

  FIG. 18 is a flowchart showing an access (reading in this example) prohibition (dormant) process and its prohibition release (activation) process function by the control unit 113 of the RFID circuit element 10A in this modified example. This corresponds to 9. In FIG. 18, step S110A is provided instead of step S110 in FIG. 9 described above, and it is determined whether or not an increase in capacitance due to the conductor or dielectric B between the electrodes 104A and 104B is detected. Other than that, it is almost the same as FIG. 9 (including the reading process of step S150 whose detailed procedure is shown in FIG. 10).

  In this modification, a tag tape 28 having a plurality of RFID circuit elements 10A is sequentially unwound from the cartridge 20, and the RFID circuit element 10A-1 (see FIG. 2) to be accessed (read in this example) is conveyed. When transported to the position of the guide 83, a part of the transport guide 83 (the protrusion 83A is not necessarily provided) comes into contact with the vicinity of the electrodes 104A and 104B of the RFID circuit element 10A-1 to contact the conductor or dielectric. Functions as body B and increases the capacitance between them. The capacitance detection circuit 117 detects this increase in capacitance, and inputs the OFF signal to that effect to the control unit 113. In response to the input of this OFF signal, the control unit 113 goes through step S110A of the flow of FIG. 18 and sets flag F = 1 in step S120, thereby canceling the prohibition of access (reading in this example) to the memory unit 115. As a result, only the RFID circuit element 10A-1 that has been conveyed and has reached the position of the conveyance guide 83 is activated so that it can access (read in this example) the memory unit 115, and the subsequent RFID circuit element 10A-2,... Are maintained in a sleep state in which access (reading in this example) to the memory unit 115 is prohibited.

  As described above, the same effect as that of the embodiment of the present invention can be obtained also by this modification.

(3) Sharing electrode and antenna This modification is the same as that of the capacitance detection type modified example described in (2) above, in the RFID tag circuit element 10A. 104B and the antenna unit 101 for signal transmission / reception are shared.

  FIG. 19 is a functional block diagram showing a functional configuration of the RFID circuit element 10A according to this modification, and is a diagram substantially corresponding to FIGS. 4 and 14 described above. Portions that are the same as those in the above-described embodiment and modifications are assigned the same reference numerals, and descriptions thereof are omitted as appropriate. In this modified example, the pair of antenna portions 101 and 101 and the electrodes 104A and 104B in the configuration of the modified example of (2) above (see FIG. 14) are shared, and one side dipole antenna (also one side electrode) is used. 104'A and the other dipole antenna (also one side electrode) 104'B are provided. Of the IC circuit 100B, the rectifier 111, the power supply unit 112, the control unit 113, the clock extraction unit 114, the memory unit 115, and the modem circuit 116, which are related to the signal transmission / reception circuit 118, the rectification unit 111, The dipole antennas 104'A and 104'B are connected to the clock extraction unit 114 and the modulation / demodulation unit 116 through coupling capacitors 119a to 119c. On the other hand, the capacitance detection circuit 117 related to capacitance detection is connected to the dipole antennas 104′A and 104′B via the RFC high frequency choke coil 120.

  In the above configuration, for example, the operating frequency of the clock circuit 117A of the capacitance detection circuit 117 is set to about 1 to 10 MHz, for example, and the operating frequency of the responder circuit 118 is set to about 2.4 GHz (that is, those frequencies are set to 2). The dipole antennas 104'A and 104'B can be shared as transmitting / receiving antennas and capacitance detection electrodes without adversely affecting each other's operation. In this case, it is not necessary to add a new electrode for capacitance detection (the existing antenna can be used as an electrode), so that the RFID circuit element 10A can be prevented from being enlarged and the cost can be reduced. it can.

(4) Capacitance detection using received radio waves This modification is different from the capacity detection type modification described in (2) above, in which the capacity detection circuit 117 is electrostatically detected by a voltage signal generated by the clock circuit 117A. Instead of detecting the increase in capacity, the radio wave received by the antenna unit 101 is used as it is for capacitance detection.

  FIG. 20 is a functional block diagram showing a functional configuration of the RFID circuit element 10A according to this modification, and is a diagram substantially corresponding to FIGS. 4, 14, and 19 described above. Portions that are the same as those in the above-described embodiment and modifications are assigned the same reference numerals, and descriptions thereof are omitted as appropriate.

  20, in this modification, a responder circuit 118 including a rectifying unit 111, a power supply unit 112, a control unit 113, a clock extracting unit 114, a memory unit 115, and a modem unit 116 includes a rectifying unit 111, a clock extracting unit 114, The antenna unit 101 is connected via a distribution circuit 121 connected to the modem unit 116.

  On the other hand, a known RSSI (Received Signal Strength Indicator) circuit 122 capable of detecting the radio field intensity is also connected to the distribution circuit 121, and its output side is connected to the comparison circuit 123. Further, the distribution circuit 121 is also connected to one electrode 104A. At this time, another known RSSI circuit 124 is connected to the electrode 104B on the other side, and its output side is connected to the comparison circuit 123. The comparison circuit 123 is connected so that the comparison result can be input to the control unit 113. The RSSI circuits 122 and 124 and the comparison circuit 123 constitute a capacitance detection circuit.

  In the above configuration, the radio wave intensity (= the radio wave intensity detected by the RSSI circuit 124) when the electrodes 104A and 104B are interposed in the radio wave signal received by the antenna unit 101 is the carrier in which the RFID circuit element 10A is the access position. Since the capacitance between the electrodes 104A and 104B is small before being conveyed to the guide 83 position, the radio wave intensity of the radio wave signal itself received by the antenna unit 101 (= the radio wave detected by the RSSI circuit 122). Strength). In contrast, when the RFID circuit element 10A has been transported to the position of the transport guide 83, the capacitance between the electrodes 104A and 104B increases due to the function of the transport guide 83 as the conductor or the dielectric B, so that the antenna It becomes almost the same as the strength of the radio signal itself received by the unit 101 (= the radio wave strength detected by the RSSI circuit 122).

  As a result, the comparison circuit 123 compares the radio field intensity detected by the RSSI circuit 122 with the radio field intensity detected by the RSSI circuit 124, and when the difference between the two is large, the antenna unit 101 of the RFID circuit element 10A. Is not at the access position, and when both are substantially equal, it can be detected that the antenna portion 101 of the RFID circuit element 10A has been transported to the access position. Then, according to the detection result, the comparison circuit 123 sends an ON signal between the electrodes 104A and 104B when there is a small capacity C1 that does not exist between the electrodes 104A and 104B, as in the modification (2). An OFF signal is input to the control unit 113 in the case of a large capacity C 2 in which a conductor or dielectric B exists. Other control is the same as that of the modified example (2).

  Also by this modification, the same effect as the modification (2) is obtained.

(5) Utilizing the state quantity detection means In this modification, in the configuration of the above-described embodiment, the arrival of the RFID tag circuit element 10A to the predetermined access position is detected by the short-circuit conduction of the conductive terminals 102A and 102B. Instead, the arrival of the access position is detected by a state quantity detecting means for detecting a state quantity such as a magnetic environment, a temperature environment, a pressure environment, and a strain environment.

  FIG. 21 is a functional block diagram showing a functional configuration of the RFID circuit element 10A according to this modification, and is a diagram substantially corresponding to FIGS. 4, 14, 19, and 20 described above. Portions that are the same as those in the above-described embodiment and modifications are assigned the same reference numerals, and descriptions thereof are omitted as appropriate.

  In FIG. 21, as described above, in this modification, the state quantity detection unit 130 is connected to the control unit 113. Whether the control unit 113 determines that the antenna unit 101 of the RFID circuit element 10A has reached the predetermined access position due to the change in the state quantity related to the environment based on the detection result of the state quantity detection unit 130. The access (reading in this example) prohibition (sleeping) process and the prohibition release (activation) process function described above are performed on the memory unit 115 according to the necessity. Hereinafter, an example of the state quantity detection unit 130 will be described in order.

(5-1) Magnetic Environment State Quantity Detecting Unit Among the state quantity detecting means 130, the magnetoresistive element 130A can be used to detect the magnetic environment state quantity. In this case, for example, a magnetism generating means (a magnet or an electromagnetic coil) is provided as an object to be detected in any part of the transport guide 83 located at a predetermined access position, and the RFID circuit element 10A is transported to the access position. Then, the magnetism generating means changes the electric resistance of the magnetoresistive element 130 </ b> A, whereby the control unit 113 detects that the antenna unit 101 has reached the access position. In response to this, the control unit 113 performs access control to the memory unit 115 (in this example, read prohibition or read permission).

(5-2) Temperature Environment State Quantity Detection Unit Among the state quantity detection means 130, a known temperature sensor 130B can be used to detect the temperature environment state quantity. For example, it is effective when it is known that a specific temperature environment different from other parts occurs in the vicinity of a predetermined access position due to the structure of the wireless tag information communication device 2, but the specific temperature environment is positively changed. In order to form it, a heater, a cooling means, etc. may be provided in the vicinity of the access position as an object to be detected. Further, the heat generated by the thermal head 41 provided in the vicinity of the cartridge 20 may be used (the print drive circuit 42 is controlled by the control circuit 60 so that the thermal head 41 generates the heat). When the RFID circuit element 10A is transported to the access position, the temperature sensor 130B detects the specific temperature environment (for example, a temperature within a certain threshold range). It is detected that 101 has reached the access position. In response to this, the control unit 113 performs access control to the memory unit 115 (in this example, read prohibition or read permission).

(5-3) Pressure Environment State Quantity Detection Unit Among the state quantity detection means 130, a known pressure sensor 130 </ b> C can be used to detect the pressure environment state quantity. For example, it is effective when it is known that a specific pressure environment different from other parts is generated in the vicinity of a predetermined access position due to the structure of the wireless tag information communication device 2, but the specific pressure environment is positively changed. In order to form it, you may provide a press means etc. (for example, conveyance roller etc.) near the said access position as a to-be-detected object. When the RFID circuit element 10A is transported to the access position, the pressure sensor 130C detects the specific pressure environment (for example, a pressure within a certain threshold range). It is detected that 101 has reached the access position. In response to this, the control unit 113 performs access control to the memory unit 115 (in this example, read prohibition or read permission).

(5-4) Strain Environment State Quantity Detection Unit Of the state quantity detection unit 130, a known strain gauge 130 </ b> D can be used to detect a strain environment state quantity. For example, it is effective when the structure of the RFID tag information communication apparatus 2 is known to cause a specific distortion environment due to bending of the RFID tag circuit element 10A different from other parts by the conveyance roller in the vicinity of a predetermined access position. However, in order to positively form the specific distortion environment, a roller, a pressing means, or the like may be provided as an object to be detected in the vicinity of the access position. When the RFID circuit element 10A is conveyed to the access position, the specific strain environment (for example, a strain value within a certain threshold range) is detected by the strain gauge 130D. It is detected that the unit 101 has reached the access position. In response to this, the control unit 113 performs access control to the memory unit 115 (in this example, read prohibition or read permission).

  The same effects as those of the above-described embodiment can be obtained by the modified examples (5-1) to (5-4). In addition, since the state quantity sensor 130 is relatively small, the entire RFID circuit element 10A can be downsized as compared with the case where the conductive terminals 102A and 102B are provided.

  In the above, in the modified examples (2), (3), and (4), the conveyance guide 83 itself (or a part thereof) is functioned as a conductor or dielectric B that realizes an increase in capacitance. Not limited to this. That is, a conductor or dielectric B made of a conductor material or a dielectric material may be separately provided as an object to be detected with respect to the transport guide 83.

  Furthermore, in the above-described embodiment and some modifications thereof, the case where the present invention is applied to a wireless tag generation system that can only be read (not writeable) has been described as an example. The present invention may be applied to a wireless tag generation system that writes wireless tag information to the IC circuit unit 100 of the tag circuit element 10A.

  In this case, in the configuration of the RFID tag information communication apparatus 2 described above, the high frequency circuit 51 performs a function of accessing (writing) the RFID tag information of the IC circuit unit 100 of the RFID tag circuit element 10A via the antenna 40 and transmitting the information. The crystal oscillation circuit 56 of the unit 53 functions as a carrier wave generation unit that generates a carrier wave for accessing (writing) the RFID tag information of the IC circuit unit 100. Further, the signal processing circuit 52 functions as an access information generation unit that generates access information (an “Erase” signal, a “Verify” signal, a “Program” signal, etc., which will be described later) for accessing the IC circuit unit 100.

  As described above with reference to FIG. 12, in this case, the terminal 5 or the general-purpose computer 6 has the print character 43, the access (write in this case) ID of the RFID circuit element 10A, and the address of the article information. , And the storage address of the correspondence information, etc. are displayed. Then, the RFID tag information communication apparatus 2 is activated by the operation of the terminal 5 or the general-purpose computer 6, and the print characters 43 are printed on the cover film 23, and the write ID, article information, etc. are written on the IC circuit unit 100. Information is written.

  FIG. 22 shows, as an example, the case where information is written to the RFID circuit element 10A in the above-described embodiment and some modifications thereof, and the control of the RFID circuit element 10A in the modification. 12 is a flowchart showing an access (write in this example) prohibition (sleeping) process and a prohibition release (activation) process function by a unit 113. The same steps as those in FIG. 9 described above are denoted by the same reference numerals, and description thereof will be simplified or omitted as appropriate.

  In FIG. 22, after initializing the flag F = 0 in step S100, it is determined in step S110 whether the conductive terminal 102A and the conductive terminal 102B are short-circuited. If the conductive terminals 102A and 102B are short-circuited by the protrusion 83A of the transport guide 83, this determination is satisfied, and the flag is accessed (written in this example) in step S120, and F represents the prohibition release (activation) state. = 1 and the process proceeds to step S160. If the conductive terminal 102A and the conductive terminal 102B are not short-circuited in step S110, the determination is not satisfied, and the process directly proceeds to step S160.

  In step S160, whether or not a write command signal for requesting to start writing information to the memory unit 115 is received from the RFID tag information communication device 2 side (antenna 40) (specifically, the RFID tag information communication device 2 Whether or not the “Erase” command signal as access information generated by the signal processing circuit 52 based on the “Erase” command output from the control circuit 60 is received by the antenna unit 101 via the high-frequency circuit 51 and the antenna 40). judge.

  If the “Erase” command signal is received by the antenna unit 101, this determination is satisfied, and the routine goes to Step S170, where it is determined whether or not the flag F = 1. If the access is prohibited (sleeping) with the flag F = 1, this determination is not satisfied and this flow is terminated. If the access is permitted (activated) with the flag F = 1, this determination is satisfied, and the process moves to step S180 to perform the writing process.

  FIG. 23 is a flowchart showing the detailed control contents in step S180.

  FIG. 23 is a flowchart showing the detailed control contents in step S180.

  In FIG. 23, first, in step S181, the memory unit 115 is initialized in response to the “Erase” command signal, and the process proceeds to step S182.

  In step S182, whether or not the “Verify” command signal for confirming whether the initialization of the memory unit 115 is sufficient is received from the RFID tag information communication apparatus 2 side (antenna 40) (“output from the control circuit 60”). Whether or not the “Verify” command signal as the access information generated by the signal processing circuit 52 based on the “Verify” command is received by the antenna unit 101 via the high-frequency circuit 51 and the antenna 40 is determined. If the determination is satisfied, the process proceeds to step S183, and the content stored in the memory unit 115 is transmitted as a reply signal from the antenna unit 101 to the RFID tag information communication apparatus 2 side (antenna 40) in response to the “Verify” signal.

  Thereafter, in step S184, it is determined again whether or not the “Erase” command signal is received by the antenna unit 101, as in step S160 described above.

  Here, the control circuit 60 of the RFID tag information communication apparatus 2 determines whether or not the memory unit 115 has been normally initialized based on the content of the reply signal transmitted in the above-described step S183, but the initialization is not normal. If it is determined, since the “Erase” command signal is transmitted again from the RFID tag information communication apparatus 2 side in order to retry initialization (retry), the determination in step S184 is satisfied, and the process returns to step S181. Repeat the same procedure.

  If the control circuit 60 of the wireless tag information communication device 2 determines that the initialization has been completed normally, the “Erase” command signal is not transmitted from the wireless tag information communication device 2 side, and is originally written in the memory unit 115. The “Program” command signal which is the predetermined information is received (the “Program” command signal as the access information generated by the signal processing circuit 52 based on the “Program” command output from the control circuit 60 is a high-frequency circuit. 51 and the antenna unit 101 via the antenna 40), the determination of step S184 is not satisfied, and the process proceeds to step S185. The determination of reception of the “Program” command signal in step S185 is also satisfied, and the process proceeds to step S186. In step S186, the predetermined information is written in the memory unit 115 based on the transmitted "Program" command signal.

  Thereafter, the process proceeds to step S187, and whether or not a “Verify” command signal for confirming whether or not information writing to the memory unit 115 has been normally performed is received from the RFID tag information communication apparatus 2 side (antenna 40) (control). Whether or not the “Verify” command signal as the access information generated by the signal processing circuit 52 based on the “Verify” command output from the circuit 60 is received by the antenna unit 101 via the high-frequency circuit 51 and the antenna 40). To do. When the determination is satisfied, the process proceeds to step S188, and the content stored in the memory unit 115 is transmitted as a reply signal from the antenna unit 101 to the RFID tag information communication apparatus 2 side (antenna 40) in response to the “Verify” signal.

  Thereafter, in step S189, it is determined again whether or not the “Program” command signal has been received by the antenna unit 101, as in step S185 described above.

  That is, the control circuit 60 of the RFID tag information communication apparatus 2 determines whether information has been normally written in the memory unit 115 based on the content of the reply signal transmitted in step S188 described above. If the determination is made, the “Program” command signal is transmitted again from the RFID tag information communication apparatus 2 side to retry the information writing (retry), so the determination in step S189 is satisfied, and the process returns to step S186. Repeat the same procedure.

  When the control circuit 60 of the wireless tag information communication device 2 determines that the information writing has been completed normally, the “Program” command signal is not transmitted from the wireless tag information communication device 2 side, and the new information after this is transmitted. The “Lock” command signal for prohibiting writing is received (the “Lock” command signal as access information generated by the signal processing circuit 52 based on the “Lock” command output from the control circuit 60 includes the high-frequency circuit 51 and Therefore, the determination in step S189 is not satisfied, the process proceeds to step S190, and the “Lock” command signal reception determination in step S190 is also satisfied, and the process proceeds to step S191. Writing new information to 115 is prohibited, and this routine is terminated.

  By the above routine, desired information transmitted from the RFID tag information communication apparatus 2 side can be written in the memory unit 115. When the above writing process is finished, the flow shown in FIG. 22 is finished.

  When the RFID tag information is written to the RFID circuit element 10A in the RFID tag information communication apparatus 2 of this modification, the tag tape 28 including a plurality of RFID circuit elements 10A is sequentially unwound from the cartridge 20. The RFID circuit element 10A-1 to be accessed (in this case, to be written) is transported to the position of the transport guide 83 that is a predetermined access position facing the antenna 40 that transmits the access information (the aforementioned Erase command signal). Retained.

  At this time, the protrusion 83A fits into the groove 103 formed in the release paper 35 and the adhesive layer 34 of the RFID circuit element 10A-1, and contacts both the conductive terminal 102A and the conductive terminal 102B. Short-circuit between the two. As a result, due to this short circuit, the control unit 113 sets the flag F = 1 in step S120 of the flow of FIG. 22 and cancels the prohibition of writing information to the memory unit 115. As a result, only the RFID circuit element 10A-1 that has been transported and reached the position of the transport guide 83 is activated so that it can be written to the memory 115, and the Erase command signal from the antenna 40 has been transmitted. In this case, the writing process is performed in step S180 from step S160 through step S170. On the other hand, subsequent RFID circuit elements 10A-2,... Are maintained in a sleep state in which writing to the memory unit 115 is prohibited, so that the RFID tag information communication apparatus 2 side and the RFID tag circuit element 10A side are not connected. Assuming that the Erase command signal from the antenna 40 is temporarily received by the antenna unit 115 at the access position (position on the near side of the transport guide 83) by wireless communication using high-frequency waves such as the UHF band. However, since the flag F = 0, the determination in step S170 is not satisfied from step S160, so the writing process is not performed.

  As described above, in the present embodiment, the wireless tag other than the wireless tag circuit element 10A-1 that should be originally accessed (to be written in this example) even when performing wireless communication using a high frequency such as the UHF band. It is possible to prevent erroneous access (in this example, erroneous writing) to the circuit elements 10A-2,. At this time, in particular, the RFID tag circuit element 10A itself has a function of detecting whether or not the antenna unit 101 has reached the access position and an activation function based on the detection function. Since there is no need for coordination or complicated control between the RFID tag circuit element side and the external cutter or operator side as in the conventional structure in which the RFID circuit element is activated by separating the cutter and manual perforation, the access position is Only the specific RFID circuit element 10A-1 located can be reliably accessed (written in this example).

  Further, in the above, the cartridge 20 in which the base tape 21 in which a plurality of RFID tag circuit elements 10A are sequentially formed in the longitudinal direction is wound around the first roller 22 is used as the RFID tag circuit element storage portion. Not limited. That is, a tray member (a so-called stack type) that stores a plurality of flat paper-like label materials each formed with one RFID circuit element 10A in the stacking direction may be used.

  Furthermore, in the above, the RFID circuit element housing portion is not limited to the cartridge 20 or the above-described tray member that can be attached to and detached from the RFID tag information communication apparatus 2 main body side, but is a so-called stationary type that cannot be attached to or detached from the apparatus main body side. An integral type may be used. In this case, the same effect is obtained.

  The wireless tag information communication device 2 reads or writes the wireless tag information from the IC circuit unit 100 of the wireless tag circuit element 10A, and performs printing for identifying the wireless tag circuit element 10A by the thermal head 41. However, this printing is not necessarily performed, and only reading or writing of the RFID tag information may be performed.

  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 illustrating a wireless tag generation system to which a wireless tag information communication device according to an embodiment of the present invention is applied. It is a notional block diagram showing the detailed structure of the RFID tag information communication apparatus shown in FIG. FIG. 3 is a diagram showing the detailed structure of the cartridge shown in FIG. 2 as viewed from the direction of the arrow III in FIG. FIG. 4 is a functional block diagram showing a functional configuration of the RFID tag circuit element shown in FIG. 3. It is a horizontal sectional view by the VV section in FIG. It is a cross-sectional view by the VI-VI cross section in FIG. FIG. 5 is a functional block diagram showing detailed functions of the high-frequency circuit shown in FIG. 4. It is a cross-sectional view by the VIII-VIII cross section in FIG. 2 showing the detailed cross-sectional structure of the conveyance guide shown in FIG. 2 with the tag tape in conveyance. 5 is a flowchart showing a read prohibition (sleeping) process and a prohibition release (activation) process function by a control unit of the RFID circuit element shown in FIG. 4. It is a flowchart showing the detailed control content of step S150 in FIG. It is the top view and bottom view showing an example of the appearance of the wireless tag formed after information reading and cutting are completed. It is a figure showing an example of the screen displayed on an above-mentioned terminal or a general purpose computer at the time of reading of the information to the RFID circuit element by the RFID tag information communication apparatus. It is a figure showing the detailed cross-section of the conveyance guide in the modification which performs the press contact to an electroconductive terminal. It is a functional block diagram showing the functional composition of the RFID circuit element by the modification which detects the access position arrival of the RFID circuit element by capacity detection. FIG. 15 is a circuit diagram illustrating a detailed configuration of the capacitance detection circuit illustrated in FIG. 14. FIG. 16 is a diagram illustrating changes in signal waveforms in the “a” portion, the “b” portion, the “c” portion, and the “d” portion of the capacitance detection circuit shown in FIG. 15. FIG. 16 is a diagram illustrating an example of amplification characteristics of the differentiating circuit illustrated in FIG. 15. It is a flowchart showing the read prohibition (sleeping) process and its prohibition cancellation (activation) processing function by the control part shown in FIG. It is a functional block diagram showing the functional structure of the RFID circuit element in the modification which shares an electrode and an antenna. It is a functional block diagram showing the functional structure of the RFID circuit element in the modification which detects an electrostatic capacitance using a received radio wave. It is a functional block diagram showing the functional structure of the RFID circuit element in the modification using a state quantity detection means. 10 is a flowchart showing a write prohibition (sleeping) process and a prohibition release (activation) process function by a control unit in a modification in which information is written to a wireless tag circuit element. It is a flowchart showing the detailed control content of step S180 in FIG.

Explanation of symbols

2 RFID tag information communication apparatus 10 RFID tag 10A RFID tag circuit element 10A-1 RFID tag circuit element to be accessed 10A-2 RFID tag circuit element not to be accessed 20 Cartridge (RFID tag circuit element storage unit)
40 Antenna (device side antenna)
52 Signal processing circuit (access information generator)
83 Conveyance guide 83A Protrusion (conduction part, detected object)
83A 'Protruding member (conducting part, object to be detected)
83B Spring (Pressing means)
101 Antenna (receiving antenna)
102A, B Conductive terminal (detection means)
104A, B electrodes (detection means)
104'A, B Dipole antenna (detection means)
113 Control unit (access control means)
115 Memory unit (storage means)
117 Capacity detection circuit (capacitance detection circuit, detection means)
122 RSSI circuit (capacitance detection circuit)
123 Comparison circuit (capacitance detection circuit)
124 RSSI circuit (capacitance detection circuit)
130A magnetoresistive element (state quantity detection means)
130B Temperature sensor (state quantity detection means)
130C Pressure sensor (state quantity detection means)
130D strain gauge (state quantity detection means)

Claims (20)

Storage means for storing wireless tag information;
A receiving antenna for receiving access information for accessing the storage means from the wireless tag information communication device by wireless communication;
Detecting means for detecting whether or not the receiving antenna is located at a predetermined access position in the wireless tag information communication device;
An RFID circuit element comprising: access control means for controlling access to the storage means according to a detection result of the detection means when the access information is received by the reception antenna. The RFID circuit element according to claim 1, wherein
The RFID circuit element according to claim 1, wherein the detection means detects a detection object provided at the predetermined access position. In the RFID circuit element according to claim 1 or 2,
The access control means switches between prohibiting access to the storage means of the access information received by the reception antenna or not prohibiting access according to a detection result of the detection means. Tag circuit element. In the RFID circuit element according to claim 1 or 2,
The access control means prohibits access to the storage means of the access information received by the reception antenna when the detection means detects that the reception antenna is not located at the access position, A wireless tag circuit element, wherein access to the storage means of the access information received by the receiving antenna is not prohibited when a detecting means detects that a receiving antenna is located at the access position. The RFID circuit element according to any one of claims 1 to 4,
The RFID circuit element according to claim 1, wherein the detection means includes a pair of conductive terminals that are short-circuited in contact with a conductive portion provided at the predetermined access position. The RFID circuit element according to any one of claims 1 to 4,
The detection means includes a pair of electrodes whose capacitance is changed by a conductor or a dielectric provided at the predetermined access position, and a capacitance detection circuit that detects the capacitance between the electrodes. A wireless tag circuit element characterized by the above. The RFID circuit element according to claim 6, wherein
The RFID tag circuit element, wherein the electrode is also used as a pair of the receiving antennas, and the capacitance detection circuit detects a capacitance between the pair of receiving antennas. The RFID circuit element according to claim 6, wherein
The capacitance detection circuit includes a comparison circuit that compares the intensity of the radio signal received by the receiving antenna with the intensity of the radio signal received by the receiving antenna and further via the pair of electrodes. Tag circuit element. The RFID circuit element according to any one of claims 1 to 4,
The RFID circuit element according to claim 1, wherein the detection means is a state quantity detection means for detecting a state quantity of the RFID tag circuit element at the predetermined access position or a state quantity relating to the surrounding environment. The wireless tag circuit element according to claim 9, wherein
The RFID circuit element according to claim 1, wherein the state quantity detecting means includes a magnetoresistive element whose electric resistance is changed by magnetism from the magnetism generating means provided at the predetermined access position. The wireless tag circuit element according to claim 9, wherein
The RFID tag circuit element, wherein the state quantity detection means includes a temperature sensor for detecting a specific temperature environment at the predetermined access position. The wireless tag circuit element according to claim 9, wherein
The RFID circuit element according to claim 1, wherein the state quantity detecting means includes a pressure sensor for detecting a specific pressure environment at the predetermined access position. The wireless tag circuit element according to claim 9, wherein
The RFID tag circuit element, wherein the state quantity detecting means includes a strain gauge. An access information generating unit for generating predetermined access information;
A device-side antenna unit that is connected to the access information generation unit and transmits the generated predetermined access information for access;
A receiving antenna that receives information transmitted from the device-side antenna unit in a non-contact manner by wireless communication; a storage unit that is connected to the receiving antenna and stores RFID tag information; and the receiving antenna is located at a predetermined access position A wireless tag circuit element comprising: detection means for detecting whether or not; access control means for controlling access to the storage means of the access information received by the reception antenna according to a detection result of the detection means; RFID tag circuit element storage unit configured to be stored in a plurality and can be sequentially taken out;
RFID tag information comprising: a detection object provided for detecting by the detection means whether or not the reception antenna provided in the RFID circuit element is located at the predetermined access position. Communication device. The wireless tag information communication device according to claim 14,
The access control means of the RFID circuit element switches between prohibiting access to the storage means of the access information received by the reception antenna or not depending on the detection result of the detection means. A wireless tag information communication apparatus characterized by the above. The wireless tag information communication device according to claim 15,
The access control means of the RFID circuit element prohibits access to the storage means of the access information received by the receiving antenna in a state where the detection object is not detected by the detection means, and the detection An RFID tag information communication apparatus, wherein access to the storage means of the access information received by the receiving antenna is not prohibited when the detected object is detected by the means. The wireless tag information communication device according to any one of claims 14 to 16,
The object to be detected includes a conduction part for contacting the detection unit of the RFID circuit element,
The RFID tag information communication apparatus according to claim 1, wherein the detection unit of the RFID tag circuit element includes a pair of conductive terminals that are short-circuited in contact with the conducting portion. The wireless tag information communication device according to claim 17,
The RFID tag information communication apparatus, wherein the object to be detected includes a pressing unit that presses the conduction portion toward the detection unit. The wireless tag information communication device according to any one of claims 14 to 16,
The detected object includes a conductor or a dielectric provided at the predetermined access position,
The detection means of the RFID circuit element includes a pair of electrodes whose capacitance is changed by the conductor or the dielectric, and a capacitance detection circuit that detects the capacitance between the electrodes. A wireless tag information communication device as a feature. The wireless tag information communication device according to any one of claims 14 to 16,
The wireless tag information communication device, wherein the detection means of the RFID circuit element is a state quantity detection means for detecting a state quantity of the RFID circuit element at the predetermined access position or a state quantity relating to the surrounding environment. .

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