Classifications

• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06K19/07737—Constructional details, e.g. mounting of circuits in the carrier the record carrier consisting of two or more mechanically separable parts
  • G06K19/07739—Constructional details, e.g. mounting of circuits in the carrier the record carrier consisting of two or more mechanically separable parts comprising a first part capable of functioning as a record carrier on its own and a second part being only functional as a form factor changing part, e.g. SIM cards type ID 0001, removably attached to a regular smart card form factor
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
  • G06K19/0672—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 resonating marks
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; 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
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/0008—General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• • G—PHYSICS
  • G06—COMPUTING OR CALCULATING; COUNTING
  • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
  • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
  • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
  • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
  • G06K7/10158—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field
  • G06K7/10178—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves methods and means used by the interrogation device for reliably powering the wireless record carriers using an electromagnetic interrogation field including auxiliary means for focusing, repeating or boosting the electromagnetic interrogation field
• • G—PHYSICS
  • G08—SIGNALLING
  • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
  • G08B13/00—Burglar, theft or intruder alarms
  • G08B13/22—Electrical actuation
  • G08B13/24—Electrical actuation by interference with electromagnetic field distribution
  • G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
  • G08B13/2428—Tag details
  • G08B13/2437—Tag layered structure, processes for making layered tags
  • G08B13/2442—Tag materials and material properties thereof, e.g. magnetic material details

Definitions

• the present invention relates to a communication storage medium and a communication system using the same.
• a high-frequency transmitter and a high-frequency receiver of a shoplifting prevention device are installed near the entrance where customers enter and exit, and the high-frequency transmitter constantly transmits high-frequency waves, and the high-frequency receiver constantly receives and monitors these high-frequency waves are doing.
• a signal that modulates the high-frequency signal hereinafter, referred to as a modulation element
• the high-frequency receiver can receive the high-frequency signal modulated by the modulation element.
• a modulating element is attached to the product in advance, and a notifier that notifies when a change in the received signal is detected is built into the high-frequency receiver, so that shoplifting of the product can be discovered using the above-described shoplifting prevention device. be able to.
• the modulation element attached in advance is subjected to processing such as removal from the product after settlement at a cash register. Therefore, with the modulation element on Passing through the receiving area of the high-frequency receiver, it can be determined that the product is uncleared.
• a resonance tag having a resonance circuit in which a capacitor element and a coil element are combined as such a modulation element is known. Since the resonance tag resonates with a predetermined high frequency (resonance frequency) determined by the capacitance of the capacitor and the inductance of the coil, the high-frequency receiver must receive a high-frequency signal modulated by the resonance tag. Can be. Shoplifting prevention devices using this resonance tag are widely spread around the world, and generally use a resonance tag that resonates at 8.2 MHz.
• a resonance tag is composed of a coil in which a predetermined pattern of cut aluminum foil is pasted on a dielectric layer such as a film, and a capacitor in which an insulating layer is provided on this coil with a film or resin, etc. ing.
• the resonance tag previously attached to the product is affixed to an aluminum foil or the like that shields a high-frequency signal that is removed from the product so that the high-frequency receiver does not operate after payment for the product at the cash register.
• resonance tags have begun to be used for product information management using data carriers.
• product information was managed by attaching nameplates, tags, etc. to the product, and describing a small number of product information such as the trademark, manufacturer name, date of manufacture, and material, and the manufacturing serial number. Manufacturing factories, lot numbers, production managers, sales dates, maintenance (repair) careers, etc. were searched from the product ledger using the manufacturing serial numbers described in the above products.
• a high-frequency signal of a predetermined frequency from a reader / writer is received in a resonance circuit in a product in advance, and a read / write data carrier which is rectified and used as a power supply is built in. It manages products by writing to and reading from product management data held by the company, and is expected to become more and more popular in the future.
• the resonance frequency is different from the resonance circuit that resonates at 13.56 MHz, which will be standardized as a data carrier for product information management There is a problem.
• the present invention has been made in view of the above problems, and has as its object to provide a memory control means for reading and writing data stored in a memory means based on a signal of a basic (first) frequency;
• a communication storage medium shared card having means for transmitting and receiving a signal of a different frequency from a signal of a frequency, and a change medium capable of changing the signal frequency transmitted and received by the communication storage medium (shared card) That is.
• Another object of the present invention is to provide a communication system using a communication storage medium (shared card) and a communication system using a different frequency using a communication storage medium (shared card) and a changeable medium.
• a communication storage medium for achieving the above object has the following configuration. That is, an IC chip having memory means and memory control means for reading and writing data to and from the memory means in response to a predetermined command of a radio signal having a first frequency; And an antenna functioning as an antenna for a radio signal having a frequency different from the above.
• the present invention relates to a communication storage medium (shared power supply) having a plurality of IC chips, and has a plurality of storage media including one IC chip and one antenna means.
• the plurality of antenna means function as antennas for radio signals having mutually different frequencies.
• the present invention provides a communication storage medium having an IC chip (shared card), a change medium for changing the reception frequency of the communication storage medium (shared card), and a reader for reading and writing the memory of the communication storage medium (shared card).
• a communication system composed of a writer and a memory means.
• An IC chip having memory control means for reading and writing data from and to the memory means in response to a predetermined command of a radio signal having a frequency of 1; and a radio signal having a frequency different from the first frequency.
• a communication storage medium comprising: an antenna unit that functions as an antenna for the IC chip, wherein the frequency at which the antenna unit functions as an antenna is set to Changing means for changing from a frequency different from the first frequency to the first frequency, control means for giving a predetermined command to the IC chip using a radio signal of the first frequency, and transmission and reception of a response to the command And communication means for performing the following.
• the present invention reads and writes a communication storage medium (shared card) having a plurality of IC chips, a change medium for changing the reception frequency of the communication storage medium (shared card), and a memory of the communication storage medium (shared card).
• the present invention relates to a communication system including a reader / writer, wherein the communication storage medium includes a plurality of storage media each including one IC chip and one antenna means, and includes the plurality of antennas.
• the means functions as an antenna for a radio signal having a different frequency from each other, and the changing means changes the frequency at which the plurality of antenna means function as an antenna from the different frequencies to the first frequency. Change to selectively function as a frequency antenna.
• the antenna means is a resonance circuit
• the changing means changes a frequency at which the antenna means functions from a frequency different from the first frequency to the first frequency by using mutual inductance with the antenna means. change.
• the changing means changes a relative position with respect to the communication storage medium.
• the frequency at which the antenna means functions is changed from a frequency different from the first frequency to the first frequency.
• the apparatus further includes positioning means for adjusting the relative position to a predetermined relative position.
• the changing means is composed of one or a plurality of resonance circuits.
• the present invention provides a communication storage medium (shared card) having one or a plurality of IC chips, a change medium for changing the reception frequency of the communication storage medium (shared card), and a communication storage medium (shared card).
• the present invention relates to a communication system in which an anti-shoplifting device using a shared card is further added to a reader / writer communication system that reads and writes a memory, and further differs from the first frequency in which the antenna means functions as an antenna.
• a notifying means for notifying by a predetermined method.
• the present invention provides a communication system comprising a communication storage medium (shared card) having one or a plurality of IC chips and a shoplifting prevention device using antenna means of the communication storage medium (shared card).
• a communication system using the communication storage medium wherein the transmitting means transmits a radio signal having a frequency different from the first frequency, wherein the antenna means functions as an antenna, and a receiving means for receiving the radio signal.
• a notifying means for detecting that the communication storage medium has passed through a space in which a radio signal having a frequency different from the first frequency propagates, and notifying by a predetermined method.
• FIG. 1 is a configuration diagram showing a shared card used in the first embodiment.
• FIG. 2 is a configuration diagram showing an example of the antenna circuit of the shared force shown in FIG.
• FIG. 3 is a diagram illustrating an example of the front surface and the back surface of the resonance tag used in the present embodiment.
• FIG. 4 is a configuration diagram of a reader / writer used in the first embodiment.
• FIG. 5 is a configuration diagram of the resonance tag detection device used in the present embodiment.
• FIG. 6 is a diagram illustrating a method of detecting a shared force by the resonance tag detecting device of FIG.
• FIG. 7 is a diagram showing a method of installing a shared card in a reader / writer used in the first embodiment having a built-in resonance tag.
• FIG. 8 is a diagram illustrating a method of installing a shared card and a resonance tag in a reader / writer used in the second embodiment and the like.
• FIG. 9 is a perspective view showing a model of an example of a state in which the resonance tags are arranged in the vertical direction.
• FIG. 10 is a diagram showing a change in the resonance frequency with respect to the vertical displacement of the resonance tag.
• FIG. 11 is a diagram illustrating a change in the resonance frequency with respect to the vertical displacement of the resonance tag.
• FIG. 12 is a perspective view showing an example of a state where the resonance tags are stacked.
• FIG. 13 is a diagram illustrating a change in resonance frequency when the overlap of the resonance tags is changed.
• FIG. 14 is a diagram illustrating an example of a shared card used in the first embodiment and the like.
• FIG. 15 shows a resonance tag or a built-in reader / writer according to the first embodiment.
• FIG. 9 is a diagram illustrating an example of a resonance tag used with the reader / writer according to the second embodiment.
• FIG. 16 is a diagram illustrating an example in which a common force and a resonance tag are overlapped.
• FIG. 17 is a diagram illustrating an example in which a shared card and a resonance tag are stacked.
• FIG. 18 is a configuration diagram of a reader / writer used in the second embodiment.
• FIG. 19 is a diagram showing a method of installing a shared card and a resonance tag used in the second embodiment in a reader / writer.
• FIG. 20 is a diagram illustrating a method of installing a shared card and a resonance tag used in the third embodiment on a reader / writer.
• FIG. 21 is a diagram illustrating a method of installing a shared card and a resonance tag used in the fourth embodiment in a reader / writer.
• FIG. 22 is a diagram illustrating a method of installing a shared card and a resonance tag used in the fifth embodiment in a reader / writer.
• a shared storage medium 10 according to a first embodiment of a communication storage medium and a communication system using the same according to the present invention, and a resonance for shoplifting prevention which can use the shared storage medium will be described.
• the tag detection device 50 and the product management reader / writer 30 will be described.
• the shared card 10 is composed of an antenna circuit 11 and a signal processing unit 12, and the signal processing unit 12 is a demodulation unit 13, a SP.PZS converter 1 that performs serial-to-parallel conversion or parallel-to-serial conversion. 4, control unit 15, EEPROM 16 as data memory, modulation unit 17 and And a power generation unit 18.
• the data memory is not limited to the EEPROM, but may be any non-volatile memory.
• the signal processing unit 1 2 the force which is mounted on the substrate is stored in a dedicated IC chip constituting the antenna circuit 1 1?, Has the function of the signal processing unit 1 2 Anything may be used, and it does not need to be stored in a dedicated IC chip.
• the antenna circuit 11 is, for example, a resonance circuit including a capacitor element 1 and a coil element 2 as shown in FIG.
• the resonance frequency of the resonance circuit is set to an arbitrary frequency by the capacitance of the capacitor element 1 and the inductance of the coil element 2 5 ′ .
• the resonance frequency is designed to resonate at a frequency of 8.2 MHz.
• the antenna circuit 11 shown in FIG. 1 has two functions.
• the first function is as a resonance tag that resonates with 8.2 MHz high frequency and electromagnetic induction transmitted from the resonance tag detection device 50 when the shared card 10 is used in the resonance tag detection device 50. Function.
• the second function is as a high-frequency receiving circuit that receives a high frequency of 13.56 MHz transmitted from the product management reader / writer 30 when the shared card 10 is used in the product management reader / writer 30. Function.
• the antenna circuit 11 when the antenna circuit 11 is used in the reader / writer 30 for product management, it is necessary to change the resonance frequency of 8.2 MHz so that it can resonate at the resonance frequency of 13.56 MHz.
• the resonance frequency of the antenna circuit 11 can be changed by using the resonance tag 20 built in the product management reader 30 or by changing the resonance frequency of the common force 10.
• the resonance tag 20 shown in Fig. 3 and the shared card 10 shown in Fig. 3 are prepared so that they can be used independently. There are methods to use.
• the specific method of changing the resonance frequency will be described later in detail (see FIGS. 7 and 8), and will not be described here. Now, a case where the shared card 10 is used for the product management reader / writer 30 will be described.
• the signal received by the antenna circuit 11 is amplified and demodulated by the demodulation unit 13 into the original digital signal.
• the digitized serial signal is converted to a parallel signal by the SZP / P / S converter 14 and then sent to the control unit 15.
• the control unit 15 rewrites the information in the EEPROM 16 by the transmitted signal, the new information is stored in the data memory EEPROM 16 designated by the control unit 15 at the designated location.
• the control unit 15 When the control unit 15 reads the information of the EEPROM 16 by the transmitted signal, the digital information signal stored in the EEPROM 16 is converted into a serial signal by the SZP / PZS converter 16. The signal is modulated by the modulator 14 and transmitted by the antenna circuit 11.
• the power generation unit 18 rectifies the induced electromotive force induced by the antenna circuit 11 and generates power necessary for reading and writing data in the EEPROM 16, and generates an SZP / PZS converter 1. 4 and the control unit 15.
• the resonance tag 20 is a shared power card so that the shared card 10 having a resonance frequency of 8.2 MHz can be used with a product management reader / writer 30 operating at a resonance frequency of 13.5 6 MHz. It converts the 10 resonance frequency.
• the resonance tag 20 is provided on the front and back surfaces of a dielectric capacitor 21 made of a plastic film. These are printed with metal coil elements 22 of different patterns, and the equivalent circuit is a resonance circuit similar to that of FIG.
• a heat adhesive is applied to a metal foil such as an aluminum foil and laminated with a plastic film such as polyethylene as a dielectric.
• a plastic film such as polyethylene as a dielectric.
• this laminate is punched out with a die stamp having a cutting edge having a spiral shape or the like to form a circuit and, at the same time, is thermally bonded to a plastic film.
• the shape of the metal layer is designed in advance to form a circuit pattern that can resonate at a predetermined high frequency.
• a photosensitive resin is applied to the metal foil, a negative film having a predetermined circuit pattern is placed on the resin-coated surface and exposed, and the unexposed portion is developed. After the removal, the exposed metal foil is removed by etching to form a circuit, whereby the resonance tag 20 can be formed.
• the reader / writer 30 includes an antenna circuit 31 and a signal processing unit 32.
• the reader / writer 30 further incorporates a resonance tag 20 shown in FIG.
• the antenna circuit 31 has the same configuration as that of FIG. 2, and includes a capacitor element and a coil element.
• the signal processing section 32 includes an I / F section 33, a key board 34, a control section 35, a P / S / SZP converter 36, a transmission section 37, a modulator 38, an amplification section 39, It comprises an amplification section 42, a demodulation section 43 and a display 44.
• the signal received by the antenna circuit 31 is amplified by the amplifier 42 and demodulated to a digital signal by the demodulator 43.
• the digitized serial signal information is converted into a parallel signal by the PZS ⁇ 5 /? Conversion unit 36, and displayed on the display unit 44 by the control unit 35.
• the resonance tag detection device 50 includes a transmission unit 48 and a reception unit 49.
• the transmission section 48 includes a transmission antenna circuit 56 and a signal processing section 51.
• the signal processing section 51 oscillates at a frequency (8.2 MHz) that matches the resonance frequency of the resonance tag.
• the receiving section 49 includes a receiving antenna circuit 57 and a signal processing section 52.
• the signal processing unit 52 has passed through the first reception filter circuit 58 and the first reception filter circuit 58 for removing a signal in an unnecessary frequency band in the signal received from the reception antenna circuit 57.
• the reception amplification circuit 59 that amplifies the signal
• the second reception filter circuit 60 that removes unnecessary frequency band signals from the signal that has passed through the reception amplification circuit 59
• the second reception filter circuit 60 Included in the output high-frequency signal Detection circuit 61 that detects the high-frequency component that is present as a low-frequency signal, and determines whether the signal detected by the detection circuit 61 is a signal transmitted from the antenna circuit 11 with the shared power 10.
• a control circuit 62 that outputs a signal, a lamp, an alarm, a video camera, etc. are set, and a warning is issued by light, sound, vision, etc. according to the output signal from the control circuit 62. It has a warning circuit 63 as a means.
• control circuit 62 of the resonance tag detection device 50 has a function of monitoring whether the power supply 64 supplied to the transmission unit 48 and the reception unit 49 holds a predetermined output, and the like. .
• the control circuit 62 of the resonance tag detecting device 50 outputs a frequency switching signal to the oscillation circuit 53, the first reception filter circuit 58, and the second reception filter circuit 60 as necessary.
• a configuration that can be used is also acceptable. By changing the oscillation frequency of the oscillating circuit 53 and the passbands of the first reception filter 58 and the second reception filter 60, it is possible to detect resonance tags having different resonance frequencies. It is possible.
• the antenna circuit 11 of the shared card 10 forms the resonance circuit shown in FIG.
• the resonance tag detection device 50 is installed near the entrance and exit used by the customer, and constantly transmits a high frequency of 8.2 MHz from the transmission antenna circuit 56, and the reception antenna circuit 57 is This high frequency is received and monitored.
• the receiving antenna circuit 57 receives a high-frequency signal including noise due to the antenna circuit 11 of the shared card 10.
• This reception signal passes through the first reception filter circuit 58 and the second reception filter circuit 60, and is identified as the shared card 10 in the control circuit 62. Then, the control circuit 62 notifies the passing of the shared card 10 by a warning circuit 53 that generates a sound or light c. Therefore, the passing of the shared card 10 can be instantly detected. . If you want to disable the function of the shared card 10 as a resonance tag (for example, after clearing at a cash register), attach aluminum foil to the antenna circuit 11 of the shared card 10 attached to the product. Therefore, if the vehicle passes through the receiving area of the receiving antenna circuit 57 without invalidating the shared power code 10, it can be determined that the product has not been cleared.
• FIG. 7 shows a case where the shared card 10 is directly used on a reader / writer 30 having a built-in resonance tag 20 as a resonance circuit
• FIG. 8 shows a case where the shared card 10 and the reader / writer are used.
• the figure shows a case where the resonance tag 20 is used between 45 and 5.
• the reader / writer 45 is composed of a signal processing unit 32 and an antenna circuit 31 having the same structure as the reader / writer 30 (FIG. 4).
• the resonance tag 20 is not built-in.
• the shared card 10 and the resonance tag 20 When installing the shared card 10 and the resonance tag 20 in the reader / writer 45, first, as shown in Fig. 8, the recess 9 attached to the shared card 10 and the resonance tag 20 are installed first. Of the convex part 2 3 After fixing the positions of the shared force card 10 and the resonance tag 20 by fitting each, the shared card 10 and the resonance tag 20 are then set at the predetermined positions of the reader / writer 45. Is determined. At a predetermined position, a mark line as a positioning means 40 as shown in the figure, a hollow, a common card 10 or an insertion case 95 for a resonance tag 20 is prepared.
• the resonance frequency of the shared card 10 is set to 8.2 using FIGS. 9 to 13.
• a description will be given of a method of changing the resonance frequency so that the reader / writer 30 can resonate at a frequency of 13.56 MHz from the MHz.
• FIG. 9 is a simplified explanatory diagram showing a state where the shared card and the resonance tag built into the reader / writer shown in FIG. 7 are opposed to each other. A method for obtaining desired resonance characteristics by adjusting the distance between the two will be described below.
• the shared card and the resonant tag inside the reader / writer have the same resonant frequency. These are shown as two resonance tags 3 and 4 having the following. In FIG. 9, a distance D is provided between the resonance tag 3 and the resonance tag 4 in a state where they are opposed to each other.
• the resonance frequency changes due to a change in the mutual inductance ⁇ ⁇ ⁇ that occurs when the two resonance tags 3 and 4 are overlapped with an interval D in the vertical direction with respect to the opposing surface.
• D the distance between the two tags
• the mutual inductance M is equal to the self-inductance L, and the value of M approaches 0 as D increases.
• Figure 10 shows the measurement results for the 8.2 MHz resonance tag.
• various resonance frequencies can be obtained by adjusting the distance (interval D) between the two resonance tags with the two resonance tags facing each other.
• the two resonance tags 3 and 4 have different resonance frequencies £ ⁇ f 2 (f! ⁇ F 2 )
• the two resonance tags face each other with the two resonance tags facing each other.
• Various resonance frequencies can be obtained by adjusting the distance (interval D).
• the variation of the mutual Indakutansu M 2 generated when superposing at intervals D in the vertical direction resonant tag of the resonance frequency f have f 2, the resonant frequency of the respective resonant tags, f H And i L (f voyage> f L ).
• f H, f L is determined by the following equation.
• Figure 11 shows a resonance tag with a resonance frequency of 8.2 MHz and a resonance tag of 10.5 MHz.
• ⁇ H shows the calculated and measured values obtained by measuring the change in f's time.
• FIG. 12 shows a case where the resonance frequency is changed by changing the amount of overlap between two resonance tags 5 (8.2 MHz) and 6 (10.5 MHz) having different resonance frequencies.
• FIG. FIG. 13 shows the result of measuring the change in the resonance frequency with respect to the change in L when the resonance tag 5 and the common tag 6 are arranged so as to overlap each other with a length L.
• FIG. 14 shows an example of a shared card 10 having a resonance frequency of about 8.32 MHz.
• a coil pattern with a line width of 4.2 mm, a line spacing of 2.2 mm and a number of turns of 3 is formed on both sides of a polyethylene film with a thickness of 25 m and a size of 60 x 50 mm on both sides using a copper thin film with a thickness of 35 m. ing.
• the capacitance of the capacitor element 1 that constitutes the resonance circuit is 144 pF (17.73 2 cm 2 ), and the self-inductance L of the coil element 2 is 0.117 H.
• the resonance frequency of this shared force 10 is the signal With the IC chip 12 corresponding to the processing unit 12 mounted, the frequency was 8.32 MHz.
• FIG. 15 shows an embodiment of the resonance tag 20 incorporated in the reader / writer 30 or the resonance tag 20 used together with the reader / writer 45.
• a coil of 35 mm thick A1 thin film on both sides of a 25 / m thick, 60 x 50 mm polyethylene film, line width 4.2 mm, line spacing 2.2 mm, number of turns 3 A pattern is formed.
• the capacitance of the capacitor element 1 constituting the resonance circuit is 2 162 pF (26.55 cm 2 ), and the self-inductance L of the coil element 2 is 0.299 / H.
• the resonance frequency of the shared card 10 was 8.85 MHz.
• FIGS. 16 and 17 show a state in which the shared card 10 shown in FIG. 14 is overlaid on the resonance tag 20 shown in FIG. 15 in different ways.
• resonance occurs at 13.56 MHz
• FIG. 17 when superposed at the position shown in FIG. 17, resonance occurs at 16.13 MHz. Therefore, in the example where the shared card 10 shown in FIG. 14 is superimposed on the resonance tag 20 shown in FIG. 15, in order to resonate at 13.56 MHz, the superposition of FIG. 16 is desirable.
• the method of changing the resonance frequency is not limited to the method using the two resonance circuits described above (such as the shared card 10 and the resonance tag 20 shown in FIG. 7 or FIG. 8).
• the same effect as in Fig. 7 can be obtained by using three resonance circuits (such as a shared card 10 and two resonance tags 20) or using more than one resonance circuit. Is obtained.
• 60 is a shared card
• 63 and 64 are two resonant tags
• 45 is a reader / writer
• the resonant frequency of the shared card 60 is two resonant tags 63 , 64 changes the resonance frequency.
• another circuit or circuit element may be used instead of the resonance circuit. Specific examples include coil metal.
• the write operation on the shared card 10 by the reader / writer 30 is as follows. First, a write command is generated from the control unit 35 by an external command via the keyboard 34 of the reader / writer 30 or the I / F unit 33, and this command is converted to PZS / S / F conversion. The signal is converted from a parallel signal into a serial signal by the modulator 36, and is converted into a frequency modulated wave signal in the next modulator 38. Next, the signal output from the modulation section 38 is amplified by the amplification section 39, and is transmitted from the antenna circuit 40 to the shared card 10 as an electromagnetic field signal. The antenna circuit 11 of the shared card 10 generates an induced electromotive force by an electromagnetic field signal transmitted from the reader / writer 30. The signal induced by the antenna circuit 11 is rectified by the power supply rectification circuit section 18 and used as a power supply for each section in the shared card 10. Therefore, the shared card 10 does not need to include a battery.
• the signal induced in the antenna circuit 11 is demodulated by the demodulation unit 13, converted into a parallel signal by the next SZP / PZS converter 14, and sent to the control unit 15.
• the control unit 15 decodes the write command sent from the reader / writer 30 and then sends the received address. Write data to the memory area of EEPROM 16 specified by the address.
• product management data written to the EEPROM 15 of the shared card 10 by the reader / writer 30 in this way is shown.
• the sales data such as the store, the seller, and the sales date is written.
• maintenance data such as the date of repair and details of the repair are written after production.
• product management at the manufacturing stage it is also possible to write the product code of the product, the date of manufacture, and the manufacturing data of the manufacturing plant.
• a read command is generated from the control unit 35 by an external signal via the I / F unit 33, and the P / S-S / P converter 36 receives the read command from the keyboard 34 of the reader / writer 30.
• the signal becomes a serial signal, is converted into a frequency displacement modulated wave signal by the modulator 38, is amplified by the amplifier 39, and is transmitted as an electromagnetic field signal from the antenna circuit 40.
• the antenna circuit 11 of the shared card 10 generates an induced electromotive force by the electromagnetic field signal transmitted from the antenna circuit 31 of the reader / writer 30, and the induced signal is rectified by the power generation unit 18. Then, the power of each unit is generated to make it an operation state. At the same time, the frequency is converted into a parallel signal by the SZP / P / S converter 14 and supplied to the control unit 15.
• the control unit 15 decodes the read command sent from the reader / writer 30, the control unit 15 reads data from the EEPROM 16 memory area specified by the sent address.
• This read signal is converted to a serial signal by the SZP / PZS converter 14. After being converted by the modulation section 17 and modulated by the modulation section 17, it is transmitted from the antenna circuit 11. The electromagnetic field signal transmitted from the shared card 10 is received by the antenna circuit 31 of the reader / writer 30.
• the data of the common card 10 is read and displayed on the display 44, or via the IZF section 33.
• the read data can be transferred to an externally connected management computer (not shown).
• the reader / writer 30 has the built-in resonance tag 20.
• the reader / writer of the second embodiment is characterized in that the reader / writer has a separate configuration without incorporating the resonance tag 20.
• FIG. 18 is a block diagram showing a configuration of the reader / writer 45 in the present embodiment. As is clear from FIG. 18, the reader / writer 45 of the present embodiment has the same configuration as the antenna circuit 31 and the signal processing unit 32 of the reader / writer 30 of the first embodiment.
• a force that requires a resonance circuit for changing the resonance frequency is required.
• the tag 20 can be used together with the shared power -do 10.
• the number of resonance tags having a resonance circuit is not limited to one.
• the resonance frequency can be changed using the mutual inductance, it is not necessary to use the resonance circuit as described above, and another circuit or circuit element may be used. Specifically, other circuits or circuit elements that can change the resonance frequency using coils, metals, etc. Can be
• Fig. 19 shows an example of identifying a member card by using a reader / writer 45 and a plurality of resonance tags for changing the resonance frequency of the shared card and the shared card.
• the member card is a shared card 60 and the resonance frequency of the shared card 60 is changed according to the member number and grade, it corresponds to the member number and grade of each member card
• the information cannot be read unless the resonance tag 63 and the resonance tag 64 are combined.
• a plurality of resonance tags 63 and resonance tags 64 are prepared, and two specific resonance tags 63 and resonance tags 64 are member cards. Only when superimposed on the shared card 60, it resonates with the oscillation frequency of the reader / writer 45, indicating that data can be read from the shared card 60. This allows you to manage your membership card.
• the reader / writer 45 has a positioning means 65 for positioning the shared card 60 and the resonance tag 63 as a medium for changing the resonance frequency.
• the positioning means 65 may be provided with a mark line at a predetermined position where the common force and the change medium such as the resonance tag 63 are installed, or the common card 60 or the resonance tag 63 may be accommodated. It may be any method such as making a depression.
• an insertion case 95 for accommodating the shared card 60 and the resonance tag 63 in a predetermined position may be provided in a mark line or a recess. The same method as the positioning method shown in FIG. 8 may be used in combination with the positioning means 65. For example, as shown in FIG.
• the concave portion 9 attached to the shared card 60 and the convex portion 23 attached to the resonance tag 63 are fitted into each of the shared force card 60 and the resonance tag 63.
• the concave part 9 attached to the resonance tag 63 and the resonance tag 64 Fix the positions of the common force card 60 and the resonance tag 63 by fitting each of the projections attached to the common card 60, and then superimpose the common card 60, the resonance tag 63, and the resonance tag 64 on the reader / writer 4. It may be installed at the predetermined position of 5.
• FIG. 20 shows another example of using a plurality of resonance tags for changing the resonance frequency of a shared card and a shared card, and a reader / writer 45 to identify a shared card as a member card.
• the member card is a shared card 70 and the resonance frequency of the shared power 70 is changed according to the member number and grade, each member can be used. Information cannot be read unless the resonance tag 73 and resonance tag 74 corresponding to the member number and grade of force are combined.
• a plurality of resonance tags 73 and resonance tags 74 are prepared, and two specific resonance tags 73 and 74 are selected from among them. Only when the card is stacked on the shared card 70 as shown in Fig. 20, it resonates with the oscillation frequency of the reader / writer 45, indicating that data can be read from the shared card 70. ing. This allows you to manage your membership card.
• the same reader / writer 45 as in the second embodiment is used.
• the shared card 70 is overlapped on two resonance tags 73 and a part of the resonance tags 74 so that they partially overlap each other, and these are stacked at a predetermined position 75 on the reader / writer 45.
• the positioning means 75 for the resonance tag 73 and the resonance tag 74 is provided with a mark line at a predetermined position where the resonance tag 73 and the resonance tag 74 which are a shared card and a change medium are installed. It may be any one of the following: a common card 70, a resonance tag 73, and a cavity in which the resonance tag 74 fits.
• an insertion case for accommodating the shared card 70, the resonance tag 73, and the like may be installed on the mark line or the recess. Also, a positioning method similar to that described in the second embodiment may be used together.
• the shared card 80 includes two shared cards having the same configuration as the shared card 10 in one card, namely, a shared card 81 (having an IC chip 2 and an antenna circuit) and a shared card 8 2 (with IC chip 1 and antenna circuit) and force ', are built in a stacked arrangement as shown in Figure 21.
• the common power supply 81 and the common card 82 are not electrically coupled, and the antenna circuits of the common card 81 and the common card 82 have different frequencies. It is designed to resonate. As shown in FIG. 21, the IC chip 2 built in the shared card 80 is combined with the resonance tag 83 and the IC chip 1 is combined with the resonance tag 84 as shown in FIG. 21 and then placed on the reader / writer 45. It is designed to resonate only when used. In addition, 1 (3 chips 1 and 1 €: chip 2) can read and write data by a signal of the same frequency from the card reader 45.
• the shared card (I (With C-chip and antenna circuit) may be more than the force N 3 shown in the two examples. However, in that case, three or more corresponding resonance tags are needed to change the resonance frequency of the shared card.
• the feature of the shared card 80 is that the storage capacity is doubled as compared to the shared card 10 (with one IC chip) described in the first embodiment because two IC chips are built-in. In addition, different information can be efficiently recorded and read out depending on the combination with the resonance tag.
• points related to product purchase are recorded on a shared card 81, and personal information of one user is recorded on another shared card 82.
• the point information that is usually required at the store is handed over to the store by passing the resonance tag 83 that can read that information, and is freely recorded using the power reader 45 installed at the store. Make it available for delivery.
• personal information related to privacy can be read out only by a specific person by using the resonance tag 84 and the card reader 45 by managing the resonance tag 84 only by the specific person.
• a fifth embodiment using a resonance tag 92 and a reader / writer 45 for changing the resonance frequency of one shared card 91 and shared force card will be described with reference to FIG.
• one shared card and one resonance tag for changing the resonance frequency according to the second embodiment described with reference to FIG. 8 are mounted on the reader / writer 45 and used. Since the points are the same, the description of the common parts is omitted.
• the shared card is used by being superimposed on the resonance tag, but in the fifth embodiment, the shared card 91 is set in advance as the resonance tag.
• the content of the shared card can be read from the reader / writer 45 when the reader / writer is placed on the reader / writer 45 at a predetermined distance. For this reason, as shown in an example in FIG. 22, the tag insertion case 95 for positioning the shared card 91 and the resonance tag 92 at a predetermined distance apart from each other by a predetermined distance is set in the reader. Used on writer 45.
• a memory control means for reading and writing data stored in a memory means based on a signal of a basic (first) frequency, and a frequency different from a signal of the basic (first) frequency
• a shared card (communication storage medium) having means for transmitting and receiving the signal, and a changeable medium capable of changing the signal frequency at which the shared card transmits and receives. Further, it is possible to provide a communication system using the shared power and a communication system using different frequencies using the shared power and the change medium.

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• 2000
  • 2000-01-26 JP JP2000017445A patent/JP4275834B2/ja not_active Expired - Fee Related
• 2001
  • 2001-01-26 WO PCT/JP2001/000524 patent/WO2001055990A1/ja active Application Filing
  • 2001-01-26 AU AU2001230523A patent/AU2001230523A1/en not_active Abandoned

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