WO2005064527A1 - Etiquette sans fil et lecteur/scripteur associe - Google Patents

Etiquette sans fil et lecteur/scripteur associe Download PDF

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Publication number
WO2005064527A1
WO2005064527A1 PCT/JP2004/019030 JP2004019030W WO2005064527A1 WO 2005064527 A1 WO2005064527 A1 WO 2005064527A1 JP 2004019030 W JP2004019030 W JP 2004019030W WO 2005064527 A1 WO2005064527 A1 WO 2005064527A1
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WO
WIPO (PCT)
Prior art keywords
wireless tag
information
circuit
antenna
frequency
Prior art date
Application number
PCT/JP2004/019030
Other languages
English (en)
Japanese (ja)
Inventor
Tomoyasu Fukui
Tsuyoshi Ohashi
Original Assignee
Brother Kogyo Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brother Kogyo Kabushiki Kaisha filed Critical Brother Kogyo Kabushiki Kaisha
Publication of WO2005064527A1 publication Critical patent/WO2005064527A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G06K19/0724—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
    • G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
    • G06K19/07767—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies

Definitions

  • the present invention relates to a wireless tag that can write and read information wirelessly, and a wireless tag reader / writer that reads and writes information from and to the wireless tag.
  • a RFID (Radio Frequency Identification) system that reads information from a small wireless tag (transponder) in which predetermined information is stored by a predetermined reader (interrogator) in a non-contact manner is known.
  • This RFID system can read the information stored in the wireless tag by wireless communication with the reader even if the wireless tag is dirty or placed in an invisible position. It is expected to be practical in various fields such as product management and inspection processes.
  • radio tag information can be written only to a specific radio tag by a write loop antenna responding to a relatively strong signal, and a plurality of radio tag powers can be written by a read loop antenna responding to a relatively weak signal. It is said that information can be read.
  • Patent Document 1 JP-A-8-226967
  • the frequency used for communication in writing and reading information to and from the wireless tag is common, so that the wireless tag is still housed in a cartridge of a wireless tag reader / writer.
  • Wireless tag tape before disconnection or already written There is a possibility that communication may be performed erroneously with a completed wireless tag or the like. That is, at present, a technology for reliably writing information only to a target wireless tag has not been provided.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wireless tag and a wireless tag reader / writer capable of reliably writing information only to a target wireless tag. To provide.
  • the gist of the first invention is a wireless tag provided with an information storage unit capable of storing predetermined information, wherein the wireless tag is contactless by a first frequency.
  • the gist of the second invention is a wireless tag reader / writer for reading and writing information from and to the wireless tag of the first invention, wherein A wireless tag is provided with a tag tape arranged continuously, and after writing information to each wireless tag, the tag tape is so removed that part or all of the first antenna in the wireless tag is removed. And cutting control means for cutting the cut.
  • the first antenna for writing information to the information storage unit in a non-contact manner at the first frequency and the first antenna for non-contact at the second frequency. Since a second antenna for reading information from the information storage unit is provided, by using different frequencies for writing and reading information to and from the wireless tag, the inside of the cartridge of the wireless tag reader / writer can be improved. Communication between the wireless tag tape before cutting or the wireless tag that has already been written is stored by mistake. Can be suitably prevented. That is, it is possible to provide a wireless tag capable of reliably writing information only to the target wireless tag.
  • the signal of the first frequency is transmitted by magnetic coupling, and the signal of the second frequency is transmitted by microwave. It is. With this configuration, it is possible to write information to the information storage unit at a relatively low first frequency, and it is further preferable that erroneous communication with another nearby wireless tag is performed. In addition to that, information can be read from the information storage unit at a relatively high second frequency, and information can be suitably read from an unrelated tag at a long distance.
  • a loop antenna is provided as the first antenna, and a dipole antenna is provided as the second antenna.
  • the information can be read from the information storage unit using a microwave and a relatively high microwave, and the information can be suitably read from an unrelated tag at a long distance.
  • a part or all of the first antenna is removed by cutting after information is written in the information storage unit.
  • the apparatus further includes frequency discriminating means for discriminating between the first frequency signal received by the first antenna and the second frequency signal received by the second antenna. This makes it possible to easily switch between writing and reading of information to and from the information storage unit.
  • the wireless tag tape in which a plurality of the wireless tags are consecutively arranged, and after writing information to each of the wireless tags, the wireless tag includes the tag.
  • information is written to the information storage unit in the wireless tag at the first frequency by magnetic coupling to a first antenna of the wireless tag. Things.
  • FIG. 1 is a diagram illustrating an RFID system to which the present invention is suitably applied.
  • FIG. 2 is a diagram illustrating a configuration of a wireless tag reader / writer according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating a configuration of a wireless tag circuit according to an embodiment of the present invention, and shows a configuration example including a frequency discriminating circuit as frequency discriminating means.
  • FIG. 4 is a diagram illustrating a configuration of a wireless tag circuit according to an embodiment of the present invention, and shows a configuration example including an RSSI detection circuit as frequency discriminating means.
  • FIG. 5 is a plan view of a tag tape for explaining the configuration of the wireless tag circuit of FIG. 3 or FIG. 4, in which the wireless tag circuits are continuously arranged at predetermined intervals.
  • FIG. 6 is a diagram schematically showing an operation of writing information to the wireless tag circuit of FIG. 3 or 4 by the wireless tag reader / writer of FIG. 2;
  • FIG. 7 is a diagram illustrating an electrical configuration of the sensor of FIG. 2.
  • FIG. 8 is a diagram illustrating a configuration of a control circuit in FIG. 2.
  • FIG. 9 is an example of a screen displayed on the terminal or the general-purpose computer in FIG. 1 when writing information to the wireless tag in FIG. 3 or 4 by the wireless tag reader / writer in FIG. 2;
  • FIG. 10 is a diagram illustrating the configuration of the communication circuit of FIG. 2 in detail.
  • FIG. 11 is a plan view explaining a cutting position of the tag tape of FIG. 5.
  • FIG. 12 is a plan view of a wireless tag created by cutting the tag tape at the cutting position in FIG. 11.
  • FIG. 13 is a plan view of a tag tape in which wireless tag circuits different in form from the wireless tag circuit of FIG. 3 or 4 are continuously arranged at predetermined intervals.
  • FIG. 14 is a plan view of a tag tape in which wireless tag circuits different in form from the wireless tag circuit of FIG. 3 or 4 are continuously arranged at predetermined intervals.
  • FIG. 15 is a plan view of a tag tape in which wireless tag circuits different in form from the wireless tag circuit of FIG. 3 or 4 are continuously arranged at predetermined intervals.
  • FIG. 16 is a flowchart illustrating an initialization operation of the wireless tag reader / writer in FIG. 2, which is executed prior to writing information to the wireless tag in FIG. 3 by the RFID system in FIG. [17]
  • FIG. 17 is a flowchart illustrating an operation of initializing machine information of the wireless tag reader / writer in the SPA of FIG.
  • FIG. 18 is a flowchart illustrating a setting initialization operation of a carrier generation unit provided in a communication circuit of the wireless tag reader / writer in the SPB of FIG.
  • FIG. 19 is a flowchart illustrating an operation of writing information to the wireless tag of FIG. 3 by the wireless tag reader / writer of FIG.
  • FIG. 20 is a flowchart illustrating a preparation operation for writing information to a wireless tag in the SWA in FIG. 19;
  • FIG. 21 is a flowchart illustrating generation of modulation information for transmitting information to the wireless tag of FIG. 3 or 4.
  • FIG. 22 is a table showing types of commands determined by the command determination routine of FIG. 21.
  • FIG. 23 is a diagram illustrating the command frame structure of FIG. 21 in detail.
  • FIG. 24 is a diagram illustrating a 0 signal and a 1 signal, which are components of the command frame in FIG. 21.
  • FIG. 25 is a diagram illustrating a 0 signal and a 1 signal used for generating a reply signal of the wireless tag power of FIG. 3 or FIG. 4;
  • FIG. 26 is a diagram exemplifying a signal indicating an ID unique to the wireless tag of FIG. 3 or FIG. 4;
  • FIG. 27 is a diagram showing a memory configuration of the wireless tag of FIG. 3 or FIG. 4.
  • FIG. 28 is a diagram illustrating “SCROLL ID Reply” returned when a signal including a “SCROLL ID” command is received in the wireless tag of FIG. 3 or FIG.
  • FIG. 29 is a diagram explaining how information following “LEN”, which is a part of the information stored in the memory circuit of FIG. 3 or 4, is extracted.
  • FIG. 30 is a diagram for explaining in detail “SCROLL ID Reply” of FIG. 22.
  • FIG. 31 is a diagram exemplifying a possible reply state from the wireless tag when the wireless tag reader / writer in FIG. 2 performs an operation of identifying a wireless tag within a communication range.
  • FIG. 32 is a diagram illustrating an example of a possible reply state from the wireless tag when the wireless tag reader / writer in FIG. 2 performs an operation of identifying a wireless tag within a communication range.
  • FIG. 33 is a flowchart illustrating an operation of specifying a wireless tag to which information is to be written in the SWB of FIG.
  • FIG. 34 is a flowchart illustrating an operation of writing information to a wireless tag in the SWC in FIG. 19.
  • FIG. 35 is a flowchart illustrating a printing operation on a tag tape and a sending / cutting operation of the tag tape performed in parallel with an operation of writing information to a wireless tag in the SWC of FIG. 19;
  • FIG. 36 is a flowchart showing an operation of a control circuit in the wireless tag circuit shown in FIG. 3.
  • FIG. 37 A flowchart showing an operation of the control circuit in the wireless tag circuit shown in FIG.
  • Cartridge motor drive circuit Thermal head
  • Frequency discrimination circuit (frequency discrimination means) 76 Power supply circuit
  • FIG. 1 is a diagram illustrating an RFID system 10 to which the present invention is suitably applied.
  • a plurality of wireless tag readers / writers 12 according to an embodiment of the present invention include a route server 16, a terminal 18, a general-purpose computer 20, and a plurality of information via a wired or wireless communication line 14. Connected to server 22.
  • FIG. 2 is a diagram illustrating the configuration of the wireless tag reader / writer 12.
  • This wireless tagley The Dalita 12 is used to create the RFID label 24 shown in FIG. 12 and the like, and as described later, writes a desired write ID and article information into the IC circuit section 64, etc.
  • the RFID tag 24 can be created immediately, and the antenna part of the RFID label 24 and the RFID circuit 24a, which also has the IC chip strength, accommodate the strip-shaped tag tape 26 that is continuously arranged at predetermined intervals.
  • a print drive circuit 36 for controlling the drive of the feed roller 34; a feed roller 38 for feeding the tag tape 26 in the direction indicated by the arrow; and a feed roller motor
  • a delivery roller drive circuit 42 for controlling the drive of the delivery roller 38 via 40, a transport guide 46 for guiding the tag tape 26 from the cartridge 28 to the carry-out port 44, and a solenoid 48
  • a cutter 50 which is a cutting device for cutting the tag tape 26 into predetermined lengths by cutting the tag tape 26 into individual wireless tag labels 24; a sensor 52 for detecting the presence or absence of the tag tape 26 at the carry-out port 44;
  • a C-shaped coil 54 for communicating with the tag circuit 24a, a communication circuit 56 for writing information to the wireless tag circuit 24a via the coil 54, and the wireless tag circuit 24a.
  • the control circuit 60 is connected to the communication line 14 by an input / output interface 62.
  • the tag tape 26 includes, for example, a band-shaped first base material having a printable surface and the wireless tag circuit 24a continuously arranged at a predetermined interval.
  • the first base material and the second base material are housed in the cartridge 28 in a wound state, respectively.
  • FIG. 3 shows the wireless tag circuit 24a, which is an example of a configuration including a frequency discriminating circuit 72 as frequency discriminating means.
  • FIG. 4 shows the wireless tag circuit 24a, which is provided with an R SSI detecting circuit 84 as frequency discriminating means. Each configuration example is shown.
  • the wireless tag circuit 24a can contact the IC circuit unit 64 capable of storing predetermined information and communicate with the wireless tag reader / writer 12 or the like at the first frequency by resonating at the first frequency and contactlessly.
  • the first antenna 66 for writing information to the IC circuit section 64 resonates at a second frequency sufficiently higher than the first frequency and communicates with a predetermined interrogator or the like at the second frequency.
  • a second antenna 68 for reading information from the IC circuit section 64 in a non-contact manner.
  • the received wave received by the first antenna 66 or the second antenna 68 is supplied to a rectifying circuit 70, a demodulating circuit 72, and a frequency discriminating circuit 74.
  • the received wave supplied to the rectifier circuit 70 is rectified by the rectifier circuit 70, supplied to the power supply circuit 76, and stored as energy for operating the wireless tag circuit 24a.
  • the frequency discrimination circuit 74 functions as a frequency discrimination means.
  • the frequency discrimination circuit 74 detects the frequency of the received wave and notifies the control circuit 78 of the frequency.
  • the control circuit 78 controls reading and writing of information from and to the memory circuit 80 functioning as an information storage unit capable of storing a predetermined information signal, and extracts commands from a received wave to execute corresponding processing. In addition to the basic control, it executes the information writing control described later.
  • the received wave supplied to the modulation / demodulation circuit 72 is demodulated by the modulation / demodulation circuit 72 and supplied to the control circuit 78.
  • the control circuit 78 extracts a command, and stores predetermined information in accordance with the content thereof into the memory circuit. The information is stored in the memory circuit 80 or predetermined information is read from the memory circuit 80.
  • the contents of the memory circuit 80 are read by the control circuit 78 and demodulated by the modulation / demodulation circuit 72. Then, the first antenna 66 or ⁇ ⁇ receiving the received wave is transmitted from the second antenna 68 as a reflected wave.
  • a frequency discriminating circuit 74 connected to the control circuit 78 discriminates a first frequency signal received by the first antenna 66 from a second frequency signal received by the second antenna 68. Specifically, the received wave is received by either the first antenna 66 or the second antenna 68 based on the frequency of the received wave supplied from the first antenna 66 or the second antenna 68. That is, it is determined whether the signal is the first frequency signal or the second frequency signal.
  • the control circuit 78 includes a write control means 82 as a control function.
  • the control means 82 permits writing of information to the memory circuit 80, and the second frequency signal is received by the second antenna 68.
  • control is performed such that only reading of information from the memory circuit 80 is performed.
  • the frequency discrimination circuit 74 determines that the received wave is the first frequency signal received by the first antenna 66
  • the control circuit 78 is set to the write-enabled state.
  • a memory write command is received, information is written to the memory circuit 80.
  • a specific operation of the target wireless tag circuit 24a is performed as necessary, and in the specific operation, predetermined information is read from the memory circuit 80.
  • the communication for reading the information is preferably performed by the first antenna 66 using the first frequency. That is, the control circuit 78 preferably sets the write permission state after predetermined information is read from the memory circuit 80 for identification of the wireless tag circuit 24a.
  • the wireless tag circuit 24a may have a configuration as shown in FIG. That is, an RSSI detection circuit 84 may be provided as a frequency discrimination means instead of the frequency discrimination circuit 74.
  • the RSSI detection circuit 84 detects the strengths of the received signals "RSSI-1" and "RSSI-2" supplied from the first antenna 66 or the second antenna 68, respectively. By detecting the received signal strength in this manner, the first frequency signal received by the first antenna 66 and the second frequency signal received by the second antenna 68 can be discriminated.
  • FIG. 5 is a plan view of the tag tape 26 for explaining the configuration of the wireless tag circuit 24a.
  • the first antenna 66 is preferably a loop antenna (coiled antenna) whose resonance frequency (first resonance frequency) is in the range of 100 kHz to 14 MHz, for example, about 13.5 MHz.
  • the second antenna 68 is a dipole antenna whose resonance frequency (second resonance frequency) is at least 20 times the first frequency, for example, about 915 MHz.
  • the first antenna 66 is formed such that at least one length dimension in the longitudinal direction of the tag tape 26 with respect to the IC circuit portion 64 is longer than the second antenna 68, and the tag tape 26 Perpendicular to its longitudinal direction In this case, only the first antenna 66 can be disconnected without disconnecting the second antenna 68.
  • FIG. 6 is a diagram schematically showing an operation of writing information to the wireless tag circuit 24a by the wireless tag reader / writer 12.
  • the coil 54 provided in the wireless tag reader / writer 12 communicates with the first antenna 66, which is a loop antenna, at the first frequency by magnetic coupling to the IC circuit.
  • the communicable distance is short, and therefore, for example, the wireless tag circuit 24a is disposed adjacent to the target wireless tag circuit 24a. It is possible to preferably prevent erroneous communication with the wireless tag circuit 24a or the like that is not the communication target.
  • the relatively high second frequency is used to read the RFID tag circuit 24a at a long distance. It can also communicate with.
  • FIG. 7 is a diagram illustrating the electrical configuration of the sensor 52.
  • the sensor 52 is, for example, a transmission type photoelectric sensor including a light emitter 142 and a light receiver 144, and the tag tape 26 or the wireless tagler is provided between the light emitter 142 and the light receiver 144. If there is no bell 24, the light output from the light emitter 142 is input to the light receiver 144. If there is the tag tape 26 or the wireless tag label 24 between the light emitter 142 and the light receiver 144, The light output from the light emitter 142 is shielded, and the control output from the light receiver 144 is inverted. This control output is supplied to the control circuit 60 as a signal indicating the presence or absence of the tag tape 26 or the RFID label 24.
  • FIG. 8 is a diagram illustrating the configuration of the control circuit 60.
  • the control circuit 60 includes a CPU 146 as a central processing unit, a ROM (Read Only Memory) 148, and a RAM (Random Access Memory) 150, and a temporary storage function of the RAM 150.
  • This is a so-called microcomputer system that performs signal processing in accordance with a program stored in the ROM 148 in advance while utilizing the program.
  • the control circuit 60 is connected to the communication line 14 via the input / output interface 62, and communicates with the route server 16, the terminal 18, the general-purpose computer 20, the information server 22, and the like. That information can be exchanged Has been.
  • FIG. 8 is a diagram illustrating the configuration of the control circuit 60.
  • the control circuit 60 includes a CPU 146 as a central processing unit, a ROM (Read Only Memory) 148, and a RAM (Random Access Memory) 150, and a temporary storage function of the RAM 150.
  • This is a so-called microcomputer system
  • FIG. 9 is an example of a screen displayed on the terminal 18 or the general-purpose computer 20 when the wireless tag reader / writer 12 writes information to the wireless tag circuit 24a.
  • the storage destination address and the like of the corresponding information in 16 can be displayed on the terminal 18 or the general-purpose computer 20, and the operation of the terminal 18 or the general-purpose computer 20 causes the wireless tag reader / writer 12 to operate, thereby Predetermined print characters are printed on the tag tape 26 and the like, and information such as the write ID and article information is written on the IC circuit section 64. Further, the correspondence between the ID of the wireless tag circuit 24a and the information written in the wireless tag circuit 24a is stored in the route server 16, and can be referred to as needed.
  • FIG. 10 is a diagram illustrating the configuration of the communication circuit 56 in detail.
  • the communication circuit 56 includes a transmitting unit 104 for transmitting a predetermined signal to the wireless tag circuit 24a, and a receiving unit 106 for receiving a reflected wave from the wireless tag circuit 24a.
  • the transmission unit 104 includes a carrier generation unit 108 that generates a carrier that is a first resonance frequency for writing information in the wireless tag circuit 24a, and an information signal supplied from the signal processing circuit 58.
  • a carrier modulating section 110 that modulates the carrier generated by the carrier generating section 108 (for example, amplitude modulation based on a TX-ASK signal), and a modulated wave amplifying section that amplifies the modulated wave modulated by the carrier modulating section 110 A part 112 is provided.
  • the output of the modulated wave amplifier 112 is transmitted to the coil 54 via a coupling circuit 114 and supplied to the IC circuit 64 via the first antenna 66 by magnetic coupling.
  • the reflected wave from the wireless tag circuit 24 a received by the coil 54 is input to the receiving unit 106 via the coupling circuit 114.
  • the receiving section 106 includes an LNA (Low Noise Amp) 116 for amplifying the received signal of the coil 54 and a band-pass filter 118 for passing only a signal of a predetermined frequency band in the received signal amplified by the LNA 116. And is provided.
  • the output of the band-pass filter 118 is input to the signal processing circuit 58, demodulated by the signal processing circuit 58, and The information on the modulation by the switching circuit 24a, that is, the information stored in the memory circuit 80 is read.
  • the tag tape sending control means 120 and the tag tape cutting control means 122 shown in FIG. 10 are both control functions of the control circuit 60.
  • the tag tape delivery control means 120 controls the drive of the delivery roller 38 via the delivery roller drive circuit 42 so that the delivery amount of the tag tape 26 is cut so that the tag tape 26 is cut at a predetermined cutting position. Is determined.
  • the tag tape cutting control means 122 controls the operation of the cutter 50 via the solenoid 48 so that part or all of the first antenna 66 in the wireless tag circuit 24a is removed, for example, as shown in FIG.
  • the tag tape 26 is cut at the position indicated by the dashed line in FIG.
  • the cutting of the tag tape 26 is performed after predetermined information is written in the IC circuit section 64 of the wireless tag circuit 24a divided by the cutting.
  • FIGS. 13, 14, and 15 show tag tapes 130, 132, and 134 in which wireless tag circuits 124a, 126a, and 128a different in form from the wireless tag circuit 24a are continuously arranged at predetermined intervals.
  • the tag tape cutting control means 122 of the control circuit 60 controls a part of the first antennas 136, 138, 140 in the wireless tag circuits 124a, 126a, 128a by controlling the operation of the cutter 50 via the solenoid 48.
  • the tag tapes 130, 132, and 134 are cut at positions indicated by alternate long and short dash lines in FIG. 13, FIG. 14, and FIG.
  • This disconnection operation is performed after predetermined information is written in the IC circuit section 64 of the wireless tags 124, 126, and 128 divided by the disconnection in the same manner as described above.
  • the entirety of the first antenna 138 is removed by cutting, whereas in the wireless tag circuit 128a shown in FIG. 15, a part of the first antenna 140 is opened by cutting.
  • the first antennas 138 and 140 function as antennas. And the writing of new information is prohibited.
  • FIG. 16 is a flowchart illustrating an initialization operation of the wireless tag reader / writer 12, which is executed before the RFID system 10 writes information to the wireless tag circuit 24a.
  • step (hereinafter, step is omitted) SPA machine information of the wireless tag reader / writer 12 is initialized.
  • the SPB after the settings of the carrier generator 108 provided in the communication circuit 56 of the wireless tag reader / writer 12 are initialized, this routine is terminated.
  • FIG. 17 is a flowchart illustrating an operation of initializing the machine information of the wireless tag reader / writer 12 in the SPA of FIG.
  • SPA1 the presence or absence of the cartridge 28 is determined.
  • SPA2 the type of the cartridge 28, that is, the width of the tag tapes 26, 130, 132, 134, and the like (hereinafter, referred to as the tag tape 26 unless otherwise distinguished), the presence or absence of RFID, and the like are determined.
  • SPA3 it is determined whether or not the tag tape 26 of the cartridge 28 has been used up, and the routine is terminated.
  • FIG. 18 is a flowchart illustrating the setting initialization operation of the carrier generation unit 108 provided in the communication circuit 56 of the wireless tag reader / writer 12 in the SPB of FIG.
  • the signal TX-PWR which is supplied to the modulation wave amplification unit 112 and determines the transmission signal strength, is turned off.
  • a PLL Phase Locked Loop
  • the VCO PCO
  • 19 is a flowchart illustrating an operation of writing information to the wireless tag circuit 24a by the wireless tag reader / writer 12.
  • SWA preparation for writing information to the wireless tag circuit 24a is performed.
  • SWB the wireless tag circuit 24a to which information is to be written is specified.
  • SWC after writing information to the radio tag circuit 24a, the present routine is terminated.
  • FIG. 20 is a flowchart illustrating a preparation operation for writing information to the wireless tag circuit 24a in the SWA of FIG.
  • SWA1 a write ID, article information, and the like, which are information to be written to the wireless tag circuit 24a, are set. The correspondence between these pieces of information is registered in the information server 22 via the communication line 14 before and after the writing of the information to the wireless tag circuit 24a.
  • SWA2 a CRC (Cyclic Redundancy Check) code is calculated from the information set in SWA1.
  • CRC Cyclic Redundancy Check
  • the a signal for detecting an error in communication between the wireless tag circuit 24a for example, the remainder of the transmission information by dividing a polynomial such x 16 + x 12 + x 5 + 1 Is done.
  • a data code reflected and modulated by the wireless tag circuit 24a and received is subjected to calculation of a CRC code by the signal processing circuit 58 and the like, and the value of the similarly received CRC code is compared with the calculation result. By doing so, a communication error is detected.
  • the present routine is terminated.
  • FIG. 21 is a flowchart illustrating generation of modulation information for transmitting information to the wireless tag circuit 24a.
  • functions such as specifying the wireless tag circuit 24a to which information is to be written and writing information are set.
  • SWD2 a command corresponding to the function set in SWD1 is determined.
  • SWD3 a command frame is created from the command determined in SWD2 and the data frame portion created in SWA3 in FIG.
  • SWD4 the command frame created in SWD3 is stored in the memory buffer of the control circuit 60.
  • the signal processing circuit 58 generates a TX-ASK signal, which is modulation information based on the command frame stored in the memory buffer.
  • FIG. 1 is a flowchart illustrating generation of modulation information for transmitting information to the wireless tag circuit 24a.
  • commands such as "PING” and "SCROLL ID” for reading the information stored in the wireless tag circuit 24a are used. Further, in the communication for writing information to the wireless tag circuit 24a, "ERASE ID” for initializing information stored in the wireless tag circuit 24a, "PROGRAM ID” for writing information, and “PROGRAM ID” for writing information are written. Commands such as “VERIFY” for confirming the updated information and "LOCK” for inhibiting the writing of new information are used.
  • FIG. 23 is a diagram illustrating in detail the command frame structure created by SWD3 in FIG.
  • the command frame has T as a time for transmitting one bit of information, 2
  • the command frame is composed of 0 signal, 1 signal shown in FIG. 24, and transmission power on / off continuously for a predetermined time.
  • a TX-ASK signal which is modulation information based on the command frame, is supplied to the carrier modulation unit 110 of the communication circuit 56.
  • ASK modulation of the carrier is performed in the carrier modulating section 110 and transmitted by the coil 54 to the wireless tag circuit 24a.
  • the control circuit 78 performs an operation of writing information to the memory circuit 80 corresponding to the command and an operation of returning information. Be done.
  • the reply information described in detail below is configured as a series of FSK-modulated signals including the 0 signal and the 1 signal shown in FIG. , The carrier is reflected and modulated based on the signal, and the Reply to Dalita 12
  • a reflected wave modulated by a signal indicating an ID unique to the wireless tag circuit 24a as shown in FIG. 26 is returned.
  • FIG. 27 is a diagram showing a memory configuration of the wireless tag circuit 24a.
  • a calculation result of the above-described CRC code, an ID unique to the wireless tag circuit 24a, and a password used for the “LOCK” command are reserved. Is memorized.
  • the reply information is created based on such information.For example, as shown in FIG. 28, when a signal including a “SCROLL ID” command is received, an 8 bit represented by OxFE is received.
  • a "PREAMBLE” signal, a "CRC” which is a calculation result of the CRC code stored in the memory circuit 80, and a "ID” indicating the ID of the wireless tag circuit 24a are generated.
  • the “PING” command in FIG. 22 described above corresponds to the position on the memory shown in FIG. 27 corresponding to the information stored in the memory circuit 80 of each wireless tag circuit 24a for the plurality of wireless tag circuits 24a.
  • This is a command for designating a position and responding, and includes information of a start address pointer “PTR”, a data length “LEN”, and a value “VAL” as shown in FIG.
  • VAL start address pointer
  • the return timing for the “PING” command of the wireless tag circuit 24a is determined by the upper three bits of the reply signal, and is divided by a BIN pulse transmitted from the wireless tag reader / writer 12 following “PING”.
  • a replay signal is returned in any of binO to bin7.
  • a signal as shown in FIG. 30 (b) is extracted and incorporated into the reply signal, and the upper three bits of the reply signal are extracted. If the bit is “011”, the section in the reply to the “PING” command shown in FIG. 31 The reply signal is returned to “bin3”.
  • the reply to the "PING" command differs as follows depending on the number of communicable wireless tag circuits 24a existing within the communication range of the wireless tag reader / writer 12 as follows. That is, when there is no wireless tag circuit 24a capable of communication within the communication range of the wireless tag reader / writer 12, no reply signal is returned as shown in "CASE1" in FIG. When one wireless tag circuit 24a capable of communication exists within the communication range, as shown in “CASE2” in FIG. 31, for example, a reply signal indicating "ID1" is returned in the section of "bin3". You. When there are two wireless tag circuits 24a that can reply in the communication range, as shown in “CASE3” in FIG.
  • a reply signal indicating “ID1” is returned in the section of “bin0”
  • a signal indicating “ID2” is returned in the section “bin2”.
  • signals indicating “ID1” and “ID2” are overlapped and returned in the section of “bin2”. In some cases.
  • FIG. 33 is a flowchart illustrating a specific operation of the wireless tag circuit 24a to which information is written in the SWB of FIG.
  • SWB5 a “PING” command frame corresponding to “PTR”, “LEN” and “VAL” set in SWB1 and SWB2 is created and transmitted.
  • SWB6 it is determined whether there is a reply signal in "bin (bn (d))", that is, "bin0”. If the determination of SWB6 is affirmative, it can be estimated that the head force of the memory circuit 80 is also a tag having 4 bits of “0000”, and based on this information, the “SCROLL ID” command is generated in SWB11.
  • the CRC code of the target wireless tag circuit 24a is And a reply signal including the ID and the ID.
  • the SWB12 calculates the CRC code of the ID read by the SWB11 and compares the calculation result with the received CRC code to determine whether the ID is a valid ID. Is determined.
  • the read ID is determined to be a valid ID, so that the IDB is stored in SWB21, and then the processing of SWB7 and subsequent steps is executed. On the other hand, even when the determination of SWB6 is denied, the processing of SWB7 and below is executed. In this SWB 7, after “1" is added to the bin number "dn (d)", in SWB8, it is determined whether the bin number "bn (d)" is smaller than "8" which is the total number of bin sections. Is determined.
  • SWB8 determines whether or not the value of is “0”. If the determination of SWB8 is affirmative, the power at which the processing of SWB6 and below is executed again. If the determination of SWB8 is denied, in SWB9, "d” indicating the number of "PING" commands is changed to “ 1 ”is determined. If the judgment of SWB9 is denied, “1” is subtracted from “d” in SWB17, and “1” is added to “bn (d)” in SWB18. When the determination of SWB9 is affirmative, it means that all of the same head data in the memory circuit 80 have been confirmed, so the head data flag “a” is set in SWB10. Is determined whether or not the value of is “0”.
  • SWB12 determines whether or not the length of “LEN” is larger than the total number “MEM_MAX” stored in the memory circuit 80.
  • SWB 14 If the determination of the SWB 14 is affirmative, the memory This means that all the data in the circuit 80 has been read and the data has an error, and the data in the memory circuit 80 is considered to be defective and the ID data is not stored. In SWB22, "(1) is subtracted from” (1) and the next If the judgment of SWB14 is negative, the value of "VAL" is changed based on the data determined by the "PING" command executed up to the previous time.
  • FIG. 34 is a flowchart illustrating the operation of writing information to the wireless tag circuit 24a in the SWC of FIG.
  • the memory circuit 80 of the wireless tag circuit 24a is initialized.
  • the reply signal strength of the wireless tag circuit 24a is also stored in the memory circuit 80 of the wireless tag circuit 24a. The stored information is confirmed, and it is determined whether or not the memory circuit 80 of the wireless tag circuit 24a is properly initialized. If the determination of SWC4 is affirmative, a signal modulated based on the “rpROGRAM ID” command is transmitted from the coil 54 in SWC5, and information is written to the wireless tag circuit 24a.
  • the wireless tag identification processing in SWB in Fig. 19 uses the "SCROLL ID" command instead of the "PING" command to obtain the correct ID including the CRC. It may be a method. Further, the wireless tag identification processing in the SWB may be omitted. This has the advantage that the wireless tag circuit 24a can be created as quickly as possible and that the implementation of the protocol can be reduced.
  • FIG. 35 illustrates a printing operation on the tag tape 26 and a sending / cutting operation of the tag tape 26, which are performed in parallel with the operation of writing information to the wireless tag circuit 24a in the SWC of FIG. FIG.
  • print / write information is downloaded or uploaded from the information server 22 via the communication line 14.
  • write information such as a write ID and article information written in the IC circuit section 64 of the wireless tag circuit 24a is downloaded or uploaded from the information server 22 via the communication line 14.
  • ST3 the cart The printing operation on the tag tape 26 is executed via the ridge motor drive circuit 32, the print drive circuit 36, the sending roller drive circuit 42 and the like.
  • the tag roller 26 is sent out by the sending roller 38 in the direction indicated by the arrow in FIG.
  • ST5 it is determined whether or not the wireless tag circuit 24a provided on the tag tape 26 has reached a predetermined writing position based on the detection result of the sensor 52 and the like. While the determination of ST5 is denied, the process is made to wait by repeating the determination, but if the determination of ST5 is affirmed, after the feeding by the sending roller 38 is stopped in ST6, The operation of writing information to the wireless tag circuit 24a in the SWC thus performed is executed.
  • ST7 a predetermined verify operation, that is, a check operation of printing and information writing is performed.
  • the tag tape 26 is sent out by the sending roller 38 in the direction indicated by the arrow in FIG.
  • ST9 it is determined whether or not the tag tape 26 has been sent to a predetermined cutting position based on the detection result of the sensor 52 and the like. While the determination in ST9 is denied, the process is made to wait by repeating the determination. If the determination in ST9 is affirmed, the cutting is performed in ST10 corresponding to the tag tape cutting control means 122. 50 cuts the tag tape 26. By this cutting operation, part or all of the first antenna 66 is removed. Then, in ST11, after the operation of discharging the RFID label 24 divided from the tag tape 26 is performed, this routine is ended. In the above control, ST4 to ST6, ST8, and ST9 correspond to the tag tape sending control means 120. By the above-described routine, the wireless tag label 24 as shown in FIG. 9 in which predetermined printing is performed and predetermined information is written is created.
  • FIG. 36 is a flowchart showing the operation of the control circuit 78 in the wireless tag circuit 24a shown in FIG.
  • STM1 it is determined whether or not a signal (command) has been received from the first antenna 66 or the second antenna 68. If the determination of STM1 is denied, the force that is caused to stand by by repeating the determination of STM1 If the determination of STM1 is affirmed, it is received by STM1 at STM2 corresponding to the frequency discrimination means. It is determined whether the command is based on the first frequency. If the judgment of STM2 is rejected, the command received by STM1 is written in STM5 by the write command.
  • the STM3 determines whether the command received at the STM1 is a write command. If the determination in STM3 is denied, this routine is terminated after STM6 performs processing other than writing information to the memory circuit 80, such as reading out information from the memory circuit 80. If the determination of the applied force STM3 is affirmative, the routine is terminated after the information is written to the memory circuit 80 in STM4. If the determination of STM5 is denied, this routine is terminated after processing other than the writing of information to the memory circuit 80 is performed in STM6, but the determination of STM5 is affirmed. That is, if the command is a write command using a received wave that is not the first frequency, the information is not written into the memory circuit 80, and the routine is terminated. In the above control, STM3 to STM6 correspond to the write control means 82.
  • FIG. 37 is a flow chart showing the operation of the control circuit 78 in the wireless tag circuit 24a shown in FIG. 4. The same steps as those in FIG. Omitted.
  • the STM7 compares “RSSI-1”, which is the received signal strength of the first antenna 66, with “RSSI-2”, which is the received signal strength of the second antenna 68, and obtains a value from “RSSI-2”. Also, it is determined whether or not “RSSI-1” is larger, and if the determination of STM7 is affirmative, the above-described processing of STM3 and below is performed, and if the determination of STM7 is denied, The above-described processes of STM5 and below are respectively executed. According to this aspect, writing of information to the memory circuit 80 is permitted only when a command at the first frequency is received from the first antenna 66.
  • the first frequency is used for the purpose and the second frequency is used for the readout, the tag tape 26 before cutting stored in the cartridge 28 of the wireless tag reader / writer 12 or the wireless tag for which writing has already been completed is used.
  • Tag circuit 24a etc. It is possible to preferably prevent erroneous communication between the devices. That is, it is possible to reliably write information only to the target wireless tag circuit 24a.
  • the first antenna 66 is provided with a loop antenna and the second antenna 68 is provided with a dipole antenna, information can be written to the memory circuit 80 at a relatively low first frequency. Therefore, in addition to being able to more appropriately prevent erroneous communication with another adjacent wireless tag circuit 24a, information can be read from the memory circuit 80 at a relatively high second frequency. The information can be suitably read from the wireless tag circuit 24a at a long distance.
  • the first antenna 66 since part or all of the first antenna 66 has been removed by cutting after the information has been written in the memory circuit 80, the first antenna 66 has the same structure as the already-written wireless tag circuit 24 a or the like. It is possible to more suitably prevent the communication for writing from being carried out by mistake.
  • the writing control means 82 for inhibiting the writing of information to the memory circuit 80 is included, so that writing and reading of information to and from the memory circuit 80 can be switched in a practical manner.
  • the wireless tag reader / writer 12 includes a tag tape 26 in which a plurality of the wireless tag circuits 24a are continuously arranged, and writes information to each of the wireless tag circuits 24a, and then writes the information to each of the wireless tag circuits 24a. Since it includes the tag tape cutting control means 120 (ST10) for cutting the tag tape 26 so as to remove a part or all of the first antenna 66 in the wireless tag circuit 24a, the wireless tag reader / writer 12 Communication between the tag tape 26 before cutting stored in the cartridge 28 or the like and the RFID tag circuit 24a for which writing has already been completed is prevented from being mistakenly performed.
  • the wireless tag circuit 24a is provided with the first antenna 66 that is a loop antenna and the second antenna 68 that is a dipole antenna.
  • various antennas such as a loop antenna, a dipole antenna, a microstrip antenna, and a Yagi antenna are appropriately selected and provided as the first antenna and the second antenna according to the mode of the wireless tag.
  • the resonance frequencies of the first antenna 66 and the second antenna 68 exemplified in the above-described embodiment are merely examples, and the LF band, It is set appropriately in one of the MF band, HF band and UHF band.
  • the coil 54 is provided as an information transmitting / receiving element for performing communication with the wireless tag circuit 24 a in the wireless tag reader / writer 12.
  • an information transmission / reception element such as a loop antenna may be provided! / ⁇ .
  • the RFID tag reader / writer 12 creates one RFID label 24 for each cutting operation by the cutter 50.
  • the RFID label 24 may be created for two or several cutting operations, such as performing the creation.
  • the RFID tag reader / writer 12 writes information into the RFID tag circuit 24a, and performs printing for identifying the RFID label 24. This printing need not always be performed. Further, only writing of information to the wireless tag circuit 24a may be performed.

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

L'invention concerne une étiquette sans fil et un lecteur/scripteur d'étiquette sans fil, des informations pouvant être écrites uniquement dans une étiquette sans fil cible sans défaillance. Ce lecteur/scripteur comprend une première antenne (66) permettant d'écrire des informations dans un circuit de mémoire (80) de manière exempte de contact, au moyen d'une première fréquence; et une seconde antenne (68) permettant de lire des informations à partir du circuit de mémoire (80) de manière exempte de contact, au moyen d'une seconde fréquence. Les différentes fréquences sont utilisées pour écrire des informations sur un circuit d'étiquette sans fil (24a) et pour lire celles-ci à partir dudit circuit, de manière à empêcher ainsi de manière exemplaire l'occurrence de communication erronée avec un ruban d'étiquette (26) placé, par exemple, dans une cartouche (28) d'un lecteur/scripteur d'étiquette sans fil (12) et n'ayant pas encore été déconnecté ou avec le circuit d'étiquette sans fil (24a) ou analogue, l'écriture ayant déjà été achevée.
PCT/JP2004/019030 2003-12-25 2004-12-20 Etiquette sans fil et lecteur/scripteur associe WO2005064527A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003-429944 2003-12-25
JP2003429944A JP4380323B2 (ja) 2003-12-25 2003-12-25 無線タグリーダライタ、タグテープ、及び無線タグ作成方法

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WO2005064527A1 true WO2005064527A1 (fr) 2005-07-14

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Publication number Priority date Publication date Assignee Title
JP2007188317A (ja) * 2006-01-13 2007-07-26 Brother Ind Ltd 無線タグ回路素子、タグテープロール、無線タグ回路素子カートリッジ、及びタグテープ製造装置
WO2008093751A1 (fr) * 2007-01-30 2008-08-07 Brother Kogyo Kabushiki Kaisha Dispositif de communication d'informations de marqueur sans fil
JP5404731B2 (ja) * 2008-07-02 2014-02-05 三菱電機株式会社 無線通信装置
WO2010001469A1 (fr) 2008-07-02 2010-01-07 三菱電機株式会社 Dispositif de communication sans fil
JP4843103B2 (ja) * 2008-07-02 2011-12-21 三菱電機株式会社 無線通信装置
JP2010130457A (ja) * 2008-11-28 2010-06-10 Fujitsu Frontech Ltd 通信装置、通信システムおよび電源制御方法
WO2010150403A1 (fr) * 2009-06-26 2010-12-29 三菱電機株式会社 Dispositif de communication sans fil
JP6316065B2 (ja) * 2014-03-31 2018-04-25 サトーホールディングス株式会社 Ｉｃタグ発行装置

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JPS628281A (ja) * 1985-07-03 1987-01-16 Nippon Lsi Kaade Kk 非接触方式による記憶基板とリ−ド・ライト装置間の書込み・読取り方法
JPH06156691A (ja) * 1992-11-25 1994-06-03 Nippondenso Co Ltd 電子荷札
JPH0844831A (ja) * 1994-07-27 1996-02-16 Nippon Telegr & Teleph Corp <Ntt> ハイブリッドカードとそれを使用した無線通信システム
JPH10207995A (ja) * 1997-01-21 1998-08-07 Rohm Co Ltd 非接触型ｉｃカード
WO2002039379A1 (fr) * 2000-11-13 2002-05-16 Infineon Technologies Ag Support de donnees sans contact
JP2002230499A (ja) * 2001-02-01 2002-08-16 Dainippon Printing Co Ltd 非接触ｉｃタグ

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS628281A (ja) * 1985-07-03 1987-01-16 Nippon Lsi Kaade Kk 非接触方式による記憶基板とリ−ド・ライト装置間の書込み・読取り方法
JPH06156691A (ja) * 1992-11-25 1994-06-03 Nippondenso Co Ltd 電子荷札
JPH0844831A (ja) * 1994-07-27 1996-02-16 Nippon Telegr & Teleph Corp <Ntt> ハイブリッドカードとそれを使用した無線通信システム
JPH10207995A (ja) * 1997-01-21 1998-08-07 Rohm Co Ltd 非接触型ｉｃカード
WO2002039379A1 (fr) * 2000-11-13 2002-05-16 Infineon Technologies Ag Support de donnees sans contact
JP2002230499A (ja) * 2001-02-01 2002-08-16 Dainippon Printing Co Ltd 非接触ｉｃタグ

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