WO2020129719A1 - Authentication device and authentication system - Google Patents

Authentication device and authentication system Download PDF

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Publication number
WO2020129719A1
WO2020129719A1 PCT/JP2019/047988 JP2019047988W WO2020129719A1 WO 2020129719 A1 WO2020129719 A1 WO 2020129719A1 JP 2019047988 W JP2019047988 W JP 2019047988W WO 2020129719 A1 WO2020129719 A1 WO 2020129719A1
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WO
WIPO (PCT)
Prior art keywords
thermoelectric conversion
conversion element
pattern
authentication device
control unit
Prior art date
Application number
PCT/JP2019/047988
Other languages
French (fr)
Japanese (ja)
Inventor
亮人 澤田
Original Assignee
日本電気株式会社
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Filing date
Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Publication of WO2020129719A1 publication Critical patent/WO2020129719A1/en

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B49/00—Electric permutation locks; Circuits therefor ; Mechanical aspects of electronic locks; Mechanical keys therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/30—Authentication, i.e. establishing the identity or authorisation of security principals
    • G06F21/31—User authentication
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means

Definitions

  • the present invention relates to an authentication device and an authentication system, for example, an authentication device and an authentication system accompanied by authentication of a key or the like.
  • the electronic device of Patent Document 1 includes a power supply unit such as a battery, a functional element that operates using this power supply unit as a power source, and a control unit that controls the operation of the functional device, and further includes a power generation unit (piezoelectric element) that performs environmental power generation. , Thermoelectric elements, etc.).
  • the power generation unit generates power and generates a signal.
  • the control unit is activated by the signal generated by the power generation unit, and the IC (Integrated Circuit) card operates.
  • the control unit and the functional element operate by receiving power supply from the power supply unit.
  • the power generation unit is arranged in the operation unit 130 of the IC card 100, and the plurality of piezoelectric elements 140 are arranged in a matrix. Will be placed.
  • the piezoelectric element 140 under the character receives a writing pressure to generate power.
  • the control unit 20 detects which piezoelectric element has generated electric power, and when a specific piezoelectric element has generated electric power, the control unit 20 gives an instruction to shift the operation mode or operate the display unit.
  • the object of the present invention has been made in view of such circumstances, and it is to provide an authentication device and an authentication system with improved security.
  • the authentication device of the present invention is an authentication device including a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit, wherein the control unit includes a plurality of first thermoelectric conversion elements.
  • a first pattern that occurs depending on how the user touches to generate power and a correct answer pattern are compared, and if the first pattern matches the correct answer pattern, the user is authenticated, and When the user touches the incorrect answer detection thermoelectric conversion element, authentication is not performed.
  • the authentication system of the present invention includes an authentication device including a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit, and the control unit includes the plurality of first thermoelectric conversion elements.
  • the control unit includes the plurality of first thermoelectric conversion elements.
  • a first pattern that occurs depending on which one of the elements is touched by the user to generate electric power, and information on whether or not the incorrect answer detection thermoelectric conversion element is touched is sent to the authentication apparatus, and the authentication apparatus The first pattern and the correct answer pattern are compared, the user is authenticated when the first pattern matches the correct answer pattern, and the information is touched by the user on the incorrect answer detecting thermoelectric conversion element. Will not be authenticated.
  • the authentication device of the present invention is an authentication device including a second thermoelectric conversion element having a correct pattern shape and a control unit, wherein the control unit is generated by a user touching the second thermoelectric conversion element.
  • the first power and the second power generated when the entire correct pattern is touched are compared by the control unit, and the difference between the first power and the second power is within an allowable range, and The user is authenticated when at least one of the cases where the generation of the first power is not interrupted is satisfied.
  • the authentication system of the present invention includes an authentication device having a second thermoelectric conversion element having a correct pattern shape and a control unit, and the control unit is generated by a user touching the second thermoelectric conversion element.
  • the first power or information about whether or not the generation of the first power is interrupted is sent to the authentication device, and the authentication device generates the second power when the first power and the entire correct answer pattern are touched.
  • the difference between the first power and the second power is within an allowable range by comparing with the power of, and at least one of the time when the generation of the first power is not interrupted is satisfied, The user is authenticated.
  • FIG. 2 is a schematic sectional view taken along the line A-A′ of the authentication card in FIG. 1. It is a perspective view which shows an example of the structure of the spin thermoelectric conversion element and incorrect answer detection element of FIGS.
  • FIG. 4 is a diagram illustrating an operation of the authentication card of FIGS. 1 to 3. It is a figure explaining the authentication card of the 1st Embodiment of this invention. It is a figure explaining the authentication card of the 1st Embodiment of this invention. It is a figure explaining the authentication card of the 1st Embodiment of this invention. It is a figure explaining the authentication system of the 2nd Embodiment of this invention. It is a figure explaining the 3rd Embodiment of this invention.
  • FIG. 1 is a block diagram showing the internal configuration of the authentication card 10 of this embodiment.
  • the authentication card 10 is an example of the authentication device of the present invention. In the present embodiment, a case will be described in which the authentication card 10 is used to transmit authentication information to the reception unit 201 of the facility or the electronic device 200 as a key for the user to enter the facility or use the electronic device. To do.
  • the authentication card 10 includes an input unit 13, a control unit 14, a transmission unit 15, and an antenna 16.
  • the input unit 13 includes a plurality (here, eight) of spin thermoelectric conversion elements 11 and one incorrect solution detection spin thermoelectric conversion element 18.
  • a plurality of spin thermoelectric conversion elements 11 and one incorrect solution detection spin thermoelectric conversion element 18 are arranged on a plane, as shown in FIG. Further, referring to FIG. 1, an example of the correct answer pattern 12 for unlocking is set according to the arrangement of the plurality of spin thermoelectric conversion elements 11 and one incorrect answer detection spin thermoelectric conversion element 18. ing.
  • the spin thermoelectric conversion element 11 corresponds to the first thermoelectric conversion element.
  • the incorrect answer detection spin thermoelectric conversion element 18 corresponds to an incorrect answer detection thermoelectric conversion element.
  • the incorrect thermoelectric conversion spin thermoelectric conversion element may be abbreviated as an incorrect answer detection element.
  • the control unit 14 is an example of a first control unit.
  • the correct answer pattern 12 illustrated by the broken line in FIG. 1 is in the shape of the letter C of the alphabet. In other words, the shape of the katakana "U” is reversed.
  • the correct pattern may have any shape, and may be, for example, “M”, “Z”, “S”, “2”, “3”, “A”, “field” or the like in addition to C.
  • the spin thermoelectric conversion element 11 may be formed. It should be noted that the pattern that can be drawn with one stroke does not require the finger to be released from the authentication card 10, and there are few incorrect inputs.
  • the control unit 14 controls the operation of the entire authentication card 10.
  • the control unit 14 is arranged at a position not overlapping the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 in a plan view, and is embedded inside the card.
  • the control unit 14 is connected to all of the eight spin thermoelectric conversion elements 11 and the incorrect answer detection elements 18 via the input terminals by separate internal wiring 19 inside the card.
  • the control unit 14 can identify which of the spin thermoelectric conversion element 11 and the incorrect solution detection element 18 is the input by detecting an input to any one of the input terminals of the control unit 14. By connecting the input elements in time series, the pattern (character) input by the user can be drawn. This pattern corresponds to the first pattern that occurs depending on which element the user touches to generate electric power.
  • the control unit 14 internally stores information on the correct answer pattern 12.
  • the body temperature is transmitted to the spin thermoelectric conversion element 11 or the incorrect solution detection element 18. Since both the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 are heat conversion elements, they generate power when the body temperature is transmitted. Further, power generation due to frictional heat generated by moving a finger while touching is also applied to the spin thermoelectric conversion element 11 or the incorrect solution detection element 18.
  • the electric power generated by the spin thermoelectric conversion element 11 or the incorrect solution detection element 18 is supplied to the control unit 14 via the internal wiring 19. The control unit 14 is activated by this power supply.
  • the control unit 14 passes the user authentication.
  • one incorrect answer detection element 18 is arranged to the right of the center of the C-shape.
  • the control unit 14 compares the first pattern with the correct answer pattern 12. Then, as a result of the comparison, the control unit 14 authenticates the user when the first pattern matches the correct answer pattern 12. On the other hand, as a result of the comparison, the control unit 14 does not authenticate the user when the first pattern does not match the correct answer pattern 12.
  • the control unit 14 does not authenticate the user.
  • control unit 14 If the user traces the correct answer pattern 12 and does not touch the incorrect answer detection element 18, the control unit 14 outputs an unlocking permission signal to the transmitting unit 15, which permits unlocking of the target device.
  • the control unit 14 is, for example, a small processor chip.
  • the transmission unit 15 puts the unlocking permission signal output by the control unit 14 on the radio frequency and transmits it to the outside of the card via the antenna 16.
  • transmitter 15 is embedded at a position that does not overlap with other circuits inside authentication card 1.
  • the transmitter 15 is supplied with power from the controller 14, and the antenna 16 is supplied with power from the transmitter 15.
  • the unlocking permission signal is transmitted from the antenna 16 to the facility or the electronic device 200.
  • the transmitter 15 may be supplied with electric power from the spin thermoelectric conversion element 11 (and the incorrect answer detection element 18) as in the controller 14.
  • FIG. 2 is a schematic sectional view taken along the line A-A′ of the authentication card 10 shown in FIG.
  • a spin thermoelectric conversion element 11 and an incorrect answer detection element 18 are embedded inside a card substrate 21 made of resin. Further, an insulating layer serving as a blindfold film 25 is formed on the spin thermoelectric conversion element 11 and the incorrect answer detection element 18.
  • the electromotive body is exposed on the card surface so that the heat of the user's finger can be sufficiently received.
  • the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 have a protective film with good thermal conductivity (eg, silicon nitride, boron nitride, alumina, aluminum nitride, etc.) so that they can sufficiently receive the heat of the user's finger. ) Is thinly formed on the surface of the card substrate 21. Whether the electromotive body is exposed on the surface of the card or a protective film having good thermal conductivity is formed thinly on the surface of the card substrate 21, the irregularities due to the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 cause the card substrate 21 to become uneven. May appear on the surface of.
  • a protective film with good thermal conductivity eg, silicon nitride, boron nitride, alumina, aluminum nitride, etc.
  • the blindfold film 25 is for hiding the irregularities, and is attached to the surface of the card substrate 21 by coating or pasting so that the card surface is as flat as possible.
  • the blindfold film 25 is preferably opaque.
  • the transparent material may be mixed with a coating material, or an opaque thin film may be attached to the transparent material. Thereby, the blindfold film 25 can be made opaque even if a transparent material is used.
  • the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 are connected to the input terminal of the control unit 14 by internal wiring (not shown).
  • the controller 14 and the transmitter 15 are embedded inside the card substrate 21.
  • the control unit 14 and the transmission unit 15 are connected by the internal wiring 22.
  • FIG. 3 is a perspective view showing an example of the structures of the spin thermoelectric conversion element 11 and the incorrect solution detection element 18.
  • a Bi:YIG (Yttrium Iron Garnet) film (Bi is added as a magnetic material on a GGG substrate 31 formed of a material such as GGG (Gadolinium Gallium Garnet, Gd 3 Ga 5 O 12 ).
  • a magnetic insulator layer 32 such as Y 3 Fe 5 O 12
  • the magnetic insulator layer 32 is magnetized in the in-plane direction (M in FIG. 3).
  • a metal film 33 of Pt or the like is formed as an electromotive material on the magnetic insulator layer 32, and electrodes 34 and 35 are provided on both ends of the metal film 33.
  • spin thermoelectric conversion element 11 is embedded in a recess formed on the surface (upper surface) of card substrate 21 with the XY plane in the figure parallel to the main surface of card substrate 21. ing. Further, in the spin thermoelectric conversion element 11, one of the electrodes 34 and 35 is arranged so as to be connected to the internal wiring 19 (not shown in FIG. 3, see FIG. 1). The electrode that is not connected to the internal wiring 19 is grounded (not shown).
  • oxide magnetic materials such as garnet ferrite (yttrium iron ferrite) and spinel ferrite can be used in addition to the Bi:YIG film.
  • a magnetized metal can also be used.
  • the magnetic insulator may be bulk or thin film.
  • the electromotive material a material having a large spin-orbit interaction is desirable, and Au or Pd can be used instead of Pt. Further, among magnetized metals (Pt, Au, Pd), an alloy containing two or more kinds of metals can be used as the electromotive body.
  • the abnormal Nernst effect is a phenomenon in which when a heat flow is applied to a magnetized magnetic body, a voltage is generated in a direction (outer product direction) orthogonal to the magnetization direction and the heat flow direction.
  • the spin thermoelectric conversion element based on the anomalous Nernst effect has a film or plate-like structure made of a magnetic metal having magnetization in one direction, such as Mn, Fe, Co, or Ni, or a magnetic alloy containing them as a base material.
  • a magnetic metal having magnetization in one direction such as Mn, Fe, Co, or Ni
  • a magnetic alloy containing them as a base material.
  • the Bi:YIG film (magnetic insulator layer 32) produces a spin current in the temperature gradient direction due to the spin Seebeck effect. To generate.
  • the spin current generated by the Bi:YIG film (magnetic insulator layer 32) flows into the metal film 33 bonded to the magnetic insulator layer 32, and due to the inverse spin Hall effect, the spin current direction (the same as the direction of ⁇ T).
  • a Bi:YIG film (magnetic insulator layer 32) in a direction orthogonal to the magnetization direction (in the XY in-plane direction of the metal film 33).
  • the generated current causes an electromotive force (E in FIG. 3) to be generated in the metal film 33, and this electromotive force can be taken out as a potential difference by the electrodes 34 and 35 provided at both ends of the metal film 33.
  • FIG. 4 is a diagram for explaining the operation of the authentication card 10 described in FIGS.
  • the control unit 14 stores a first pattern that occurs depending on which one of the plurality of first thermoelectric conversion elements is touched by the user to generate power, and a non-volatile storage unit (not shown) of the control unit 14 to store the first pattern. If the first pattern matches the correct answer pattern, the user is authenticated.
  • the heat of the finger is transferred to the spin thermoelectric conversion element 11.
  • the surface of the spin thermoelectric conversion element 11 is rubbed with the finger, so that frictional heat generated thereby is also applied to the spin thermoelectric conversion element 11.
  • the temperature gradient ⁇ T described in FIG. 3 is applied between the surface of the spin thermoelectric conversion element 11 that is touched by the finger and the opposite side of the spin thermoelectric conversion element 11, and the electromotive force E is generated to obtain electric power.
  • the generated power is supplied to the control unit 14 by the internal wiring 19. Then, the control unit 14 is activated by the supply of this electric power.
  • the control unit 14 determines that the answer is correct. Then, the control unit 14 generates a signal corresponding to the stored personal identification number for unlocking and transmits this signal to the transmission unit 15.
  • the transmitting unit 15 receives the signal transmitted by the transmitting unit 15, performs signal processing such as placing (modulating) on the radio frequency, and transmits the signal to the receiving unit 201 of the facility or the electronic device 200 via the antenna 16. As a result, the facility or the electronic device 200 is unlocked.
  • the control unit 14 determines that the incorrect answer is obtained. Then, the control unit 14 does not generate a signal corresponding to the personal identification number. Moreover, when the incorrect touch detection element 18 is touched with a finger, the control unit 14 determines that the answer is incorrect. Further, when the incorrect answer detection element 18 is touched even after tracing the correct answer pattern, that is, a substantially C-shape like the incorrect answer pattern 44, the control unit 14 determines that it is an incorrect answer. As illustrated in FIG. 4, when the correct answer pattern 42 is substantially C-shaped, the incorrect answer detection element 18 may be arranged at the center inside the substantially C-shaped. Further, a plurality of incorrect answer detection elements 18 may be arranged.
  • the controller 14 Since the user may touch the incorrect answer detection element 18 unintentionally, the controller 14 does not judge the incorrect solution by only touching it once. May be determined.
  • the control unit 14 stores the number of incorrect answer patterns traced by the user within a predetermined time in a non-volatile storage unit, and when the predetermined number of times (for example, 5 times) is reached, the pattern is stored in a fixed period thereafter. Input may not be accepted.
  • control unit 14 may determine the correct answer or the incorrect answer in consideration of the order in which the plurality of arranged spin thermoelectric conversion elements 11 are touched.
  • the correct order (correct order) is stored together with the correct answer pattern in the nonvolatile storage section of the control section 14, and the facility or the electronic device 200 is unlocked when both the correct answer pattern and the correct answer order are cleared.
  • a frame line 45 (not shown in FIG. 1) may be drawn on the surface of the authentication card 10 corresponding to the outer shape of the input unit 13 (not shown in FIG. 4). Good. In this case, it is easy to understand which range of the surface of the authentication card 10 should be touched with a finger.
  • the outer shape of the input unit 13 and the frame line 45 are arranged at positions corresponding to each other.
  • the color of the card surface at the portion corresponding to the input unit 13 may be painted separately from the other surface colors.
  • the authentication card 10 may be disabled.
  • a guide mark such as “+” may be attached to the starting point of the correct answer pattern 42.
  • the guide mark may have a shape other than +, such as a circle, a triangle, or a rectangle.
  • the guide mark may be made different in color from the other parts so as to be conspicuous.
  • the eight spin thermoelectric conversion elements 11 of FIG. 1 are arranged so as to draw a substantially C-shaped pattern, which is a correct pattern.
  • a dummy spin thermoelectric conversion element 110 (hereinafter referred to as a dummy element) is used. May be abbreviated as ".") on the authentication card 10. Note that, in FIG. 5A, the dummy element is arranged in the center of the input section 13. In FIG. 5A, the input unit 13 of the authentication card 10 is illustrated, but the internal wiring is omitted. In FIG. 5A, the incorrect answer detection element 18 is also arranged.
  • both the dummy element and the incorrect answer detection element 18 are arranged on the authentication card 10, even if the user touches the dummy element, the control unit 14 determines that the incorrect answer.
  • the control unit 14 determines that the incorrect answer.
  • input can be made even after the control unit 14 determines that the answer is incorrect, and when the user touches the incorrect answer detection element, the control unit 14 determines that the answer is incorrect.
  • the input may not be accepted (the control unit is not activated) after the completion. In this way, the process after the control unit 14 determines that the incorrect answer is made can be used differently depending on whether the user touches the dummy element or when the user touches the incorrect answer detection element.
  • the iron powder is a ferromagnetic material.
  • the correct answer pattern 42 may be exposed by the iron powder.
  • the iron powder adheres to the dummy element, which makes it difficult to understand the correct answer pattern 42. If only this role is required, a dummy element (redundant element) that does not affect correct or incorrect answers even if the user touches it may be arranged on the authentication card 10.
  • the dummy element 110 may be connected to the control unit 14 by the internal wiring 19 like other elements. As a result, when the user touches the dummy element 110, electric power is generated, and the electric power can be used to drive the control unit 14 and the transmission unit 15.
  • FIG. 5A the arrangement of the elements was left-right asymmetric on the plane of FIG. 5A.
  • FIG. 5B by arranging the elements as shown in FIG. 5B, it is possible to make them line symmetrical with respect to a line passing through the center of the input section 13 or to be arranged symmetrically with respect to the center point of the input section.
  • the correct answer pattern can be made more difficult to understand.
  • a frame is drawn on the resin surface of the authentication card 10 corresponding to the individual positions of the dummy element 110, the spin thermoelectric conversion element 11, and the incorrect answer detection element 18, the position traced by the finger becomes clear. As a result, it is possible to reduce the possibility that the user will mistakenly move the finger to form an incorrect answer pattern.
  • the entire area in which the dummy element 110, the spin thermoelectric conversion element 11, and the incorrect answer detection element 18 are arranged may be colored in a color different from the other areas. Furthermore, the drawing of the frame described above and the coloring of the different color described above may be combined.
  • FIG. 6 is a diagram illustrating an authentication system according to the second embodiment of this invention.
  • This authentication system includes an authentication device 100 and an authentication device 250.
  • the individual first spin thermoelectric conversion elements and incorrect answer detection elements of the authentication device 100 are collectively shown as the input unit 213.
  • the internal wirings connecting the input unit 213 and the control unit 214 are collectively drawn by one line.
  • the control unit 14 stores the correct answer pattern, compares the correct answer pattern with the first pattern, determines the correct answer or the incorrect answer, and authenticates the user.
  • the control unit 214 of the present embodiment outputs the first pattern to the transmission unit 215 without performing the above comparison and determination.
  • the transmitting unit 215 transmits the authentication information to the receiving unit 201 of the authentication device 250 of the facility or the electronic device via the antenna 216. Then, the authentication unit 202 of the authentication device 250 determines whether or not the authentication device 100 authenticates the user who has input the first pattern.
  • control unit 214 driven by the first spin thermoelectric conversion element can be lightened, and the circuit scale of the control unit 214 is reduced. Can be made smaller.
  • FIG. 7 is a diagram illustrating an authentication device according to a third embodiment of the present invention.
  • a plurality of spin thermoelectric conversion elements 11 are arranged in the authentication card 10 of the first and second embodiments.
  • the authentication card 50 according to the present embodiment for example, one spin thermoelectric conversion element 51 having an alphabet “M” shape is arranged in the authentication card 50 according to the present embodiment.
  • the spin thermoelectric conversion element 51 corresponds to an example of the second thermoelectric conversion element. If the user traces the M-shape correctly with his/her finger, the correct answer pattern 52 is obtained.
  • the spin thermoelectric conversion element 51 is an M-shaped spin thermoelectric conversion element shown in FIG. Referring to FIG.
  • electrodes 511 and 512 are provided at the lower ends of the M-shaped vertical bars, respectively.
  • One of the electrodes 511 and 512 is connected to the control unit 54, and the other electrode is grounded.
  • the M-shaped spin thermoelectric conversion element 51 may be formed by stacking the metal film 33 and the magnetic insulator layer 32 shown in FIG.
  • An M-shaped electromotive film may be formed on the rectangular ferromagnetic layer.
  • a lithography process is used, a sheet of the electromotive film is cut into M-shaped, or the M-shaped is drawn with a pen containing a paste material containing the electromotive film. , Etc. can be used.
  • the power (first power) generated by the user touching the spin thermoelectric conversion element 51 and the power generated when the user touches the entire correct pattern ( The second power) is compared by the control unit 54. As a result of the comparison by the control unit 54, if the difference between the first power and the second power is within the allowable range, and if at least one of the cases where the generation of the first power is not interrupted is satisfied, Then, the user is authenticated.
  • a correct answer or an incorrect answer is determined by any of the following processes (1) to (3).
  • (1) When the user traces the surface of the authentication card 51 with an incorrect pattern, the generated electric power becomes smaller than when the trace is performed according to the correct pattern (the electric power is not generated even by tracing the place where there is no thermoelectric element). Therefore, the control unit 54 compares the generated powers in the power comparison unit 541 and determines the correct answer or the incorrect answer based on the difference between the generated powers. (2) The control unit 54 determines an incorrect answer if there is a time when power generation is interrupted, and a correct answer if it is not interrupted. (3) Combine (1) and (2).
  • the control unit 54 detects and determines the generated power.
  • the control unit 54 stores a correct generated power value in advance and includes a power comparing unit 541.
  • the power comparison unit 541 compares the accurate generated power value with the power value generated in the pattern drawn by the user.
  • An allowable range of how much the difference with the correct generated power value can be allowed is set in the control unit 54. If the difference between the power value generated in the pattern drawn by the user and the correct generated power value is within the allowable range, the control unit 54 determines that the answer is correct. For example, if the power value generated by the pattern drawn by the user is 3/4 or more of the correct generated power value, it is set in the control unit 54 as being within the allowable range. Since the transmitter 55 and the antenna 56 have the same functions as those in the first embodiment, their description will be omitted.
  • the control unit 54 ′ includes a discontinuity detection unit 542 that detects whether or not there is a time when the power generation is discontinued, and the discontinuity detection unit 542 is used to determine a correct answer or an incorrect answer.
  • the correct pattern is a pattern that cannot be written with a single stroke, such as the Chinese character “Ta” or the alphabet “A”, the user's finger leaves the authentication card 50 for some time, and the generated power is interrupted. Become. Therefore, when the authentication method (2) is used, it is desirable that the correct answer pattern be one-stroke writing such as “M”, “C”, “S”, “2”, and “3”. Even if the pattern can be written with a single stroke, the user's finger may be separated from the authentication card 50 for a moment, so that it is preferable to allow it to be separated once, for example, to improve the usability. The number of times the finger is allowed to be released may be determined in consideration of the shape of the correct answer pattern.
  • (3) is, for example, a process that satisfies both (1) and (2), that is, when the correct answer pattern is traced and there is no time for power generation to be interrupted, the correct answer is given. This is effective when you want to tighten user authentication.
  • the incorrect answer detection element 58 having the same function as that of the first embodiment is arranged on the authentication card 50.
  • the operation and role of the incorrect answer detection element 58 are similar to those in the first embodiment.
  • a frame line, a frame, and a guide mark may be further provided.
  • the correct answer or the incorrect answer is determined based on the difference in generated power or the presence or absence of the break time, so that the security is improved as in the first and second embodiments.
  • FIG. 10 is a diagram for explaining the fourth embodiment of the present invention.
  • This authentication system includes an authentication device 300 and an authentication device 350.
  • the plurality of first spin thermoelectric conversion elements and incorrect answer detection elements of the authentication device 300 are collectively shown as the input unit 313. Further, in FIG. 10, the internal wirings connecting the input unit 313 and the control unit 314 are collectively drawn by one line.
  • the control unit 214 authenticates the user by any of the above (1), (2), and (3).
  • the control unit 314 of the present embodiment does not perform the above-mentioned comparison and determination, and information of power generated by the user touching the spin thermoelectric conversion element 51 having, for example, the letter “M” in the alphabet, or this power.
  • the authentication device 350 receives at least one of information on the power generated by the user touching the spin thermoelectric conversion element 51 and information on the presence/absence of a time when the generation of this power is interrupted.
  • the authentication unit 302 of the authentication device 350 performs any one of the processes (1), (2), and (3) to authenticate the user.
  • the security is improved as in the first to third embodiments. Furthermore, in the present embodiment, the processing in the control unit 314 can be lightened, and the circuit scale of the control unit 314 can be reduced.
  • thermoelectric conversion element can usually generate sufficient electric power to operate the circuit, it may be insufficiently charged from the environment. That is, charging may be insufficient depending on the environment in which the thermoelectric conversion element is arranged. For example, there are cases where the temperature becomes extremely high such as on a hot day, the temperature difference applied to the thermoelectric conversion element becomes small, and the obtained electric power becomes insufficient. When the temperature is extremely high and becomes equal to the body temperature, or when the card is placed in a high temperature place, the temperature difference may not occur.
  • FIG. 11 is sectional drawing explaining the 6th Embodiment of this invention.
  • FIG. 11 corresponds to a schematic cross-sectional view taken along the line A-A′ in FIG. 1.
  • a spin thermoelectric conversion element 81 and an incorrect answer detection element 88 are embedded in a resin card substrate 21.
  • a heat generation film 83 is provided on the spin thermoelectric conversion element 81 and the incorrect answer detection element 88 that form the input section.
  • a material having a high friction coefficient is used as the material of the heat generating film 83.
  • FIG. 11 is sectional drawing explaining the 6th Embodiment of this invention.
  • FIG. 11 corresponds to a schematic cross-sectional view taken along the line A-A′ in FIG. 1.
  • a heat generation film 83 is provided on the spin thermoelectric conversion element 81 and the incorrect answer detection element 88 that form the input section.
  • a material having a high friction coefficient is used as the material of the heat generating film 83.
  • FIG. 11 is sectional drawing explaining the 6th Embod
  • thermoelectric element spin thermoelectric conversion element 81 and The temperature of the surface of the incorrect answer detection element 88
  • FIG. 12 is a sectional view illustrating a sixth embodiment of the present invention.
  • an insulating layer 85 can be provided between the spin thermoelectric converting element 11 and the heat generating film 83 in order to prevent a short circuit between the thermoelectric converting elements. ..
  • an insulating layer 85 can be provided between the incorrect answer detection element 88 and the heat generation film 83. That is, the heat generation film 83 is provided on the spin thermoelectric conversion element 81 and the incorrect answer detection element 88 which form the input section, with the thin insulating layer 85 interposed therebetween.
  • a material for the insulating layer 85 for example, a material having good thermal conductivity such as silicon nitride, boron nitride, alumina, or aluminum nitride may be used.
  • a material having good thermal conductivity for the insulating layer 85 it is possible to prevent the temperature gradient from being applied to the inside of the insulating layer 85 as much as possible.
  • the heat generating film 83 is opaque, it can also serve as the blinding film described in FIG. Even with a material having a low coefficient of friction, the coefficient of friction can be effectively increased by roughening the surface.
  • thermoelectric conversion element is arranged.
  • FIG. 13 is a block diagram illustrating the authentication card 400 of this embodiment.
  • the electric power that can be generated by the thermoelectric conversion element becomes small depending on the environment, and the electric power may not be sufficient to operate the circuit. Therefore, in the authentication card 400 of the present embodiment, in order to generate electric power for driving the circuit, in addition to the thermoelectric conversion element of the input section, a driving thermoelectric conversion element 91 having a larger area than the thermoelectric conversion element, and a storage unit. And a portion 92 are provided.
  • the driving thermoelectric conversion element 91 corresponds to an example of the third thermoelectric conversion element.
  • the plurality of first spin thermoelectric conversion elements and incorrect answer detection elements are collectively shown as the input unit 93.
  • the internal wiring connecting the input unit 93 and the control unit 94 is collectively drawn by one line.
  • the driving thermoelectric conversion element 91 and the power storage unit 92 are arranged at positions that do not overlap with other circuits inside the authentication card 400.
  • the power storage unit 92 for example, a lithium ion secondary battery can be used.
  • the driving thermoelectric conversion element 91 includes electrodes corresponding to the electrodes 34 and 35 for extracting electromotive force, similarly to the configuration shown in FIG.
  • the driving thermoelectric conversion element 91 is connected to two terminals of the power storage unit 92. Note that in FIG. 13, the connection between the driving thermoelectric conversion element 91 and the power storage unit 92 is indicated by one line.
  • the control unit 94 includes elements of the input unit 93 (elements corresponding to the spin thermoelectric conversion element 11 and the incorrect-solution detection spin thermoelectric conversion element 18 in FIG. 1 and not shown in FIG. 23), and the power storage unit 92. And is connected to the transmitter 95.
  • the power storage unit 92 is connected to the driving thermoelectric conversion element 91, the control unit 94, and the transmission unit 95.
  • the control unit 94 and the transmission unit 95 also supply power from the power storage unit 92. Further, the driving thermoelectric conversion element 91 generates electric power by the temperature difference between the element front surface and the element back surface, according to the same principle as that described in FIG. In addition to this, when the user touches the surface of the driving thermoelectric conversion element 91 with a finger, the driving thermoelectric conversion element 91 also generates heat by the heat transmitted from the finger.
  • thermoelectric conversion element 91 having a larger area than the thermoelectric conversion element of the input section 93 is provided, even if the electric power obtained from the input section 93 is insufficient, a larger electric power than the thermoelectric conversion element of the input section 93 is supplied. Can be generated. As described above, as a result of providing the driving thermoelectric conversion element 91, it is possible to operate the control unit 94, the transmission unit 95, the antenna 96, and the like with larger power.
  • the driving thermoelectric conversion element 91 and the power storage unit 92 may be further provided in the authentication devices of the second and fourth embodiments.
  • a power storage unit may be connected to each element of the input unit (spin thermoelectric conversion element or incorrect answer detection element), and power may be output from the power storage unit to the control unit.
  • FIG. 14 is a diagram for explaining the eighth embodiment of the present invention.
  • the authentication device 1210 of this embodiment includes a plurality of first thermoelectric conversion elements 1211 and a control unit 1214.
  • an incorrect solution detection thermoelectric conversion element 1218 is provided.
  • the control unit 1214 is connected to the plurality of first thermoelectric conversion elements 1211 and incorrect thermoelectric conversion conversion element 1218.
  • the control unit 1214 compares the correct pattern 1212 with the first pattern 1243 that occurs depending on which of the plurality of first thermoelectric conversion elements 1211 the user touches to generate electric power. Then, as a result of the comparison, the control unit 1214 authenticates the user when the first pattern matches the correct answer pattern.
  • control unit 1214 does not authenticate the user if the first pattern does not match the correct pattern. Further, the control unit 1214 does not authenticate the user when the user's finger touches the incorrect answer detection thermoelectric conversion element.
  • FIG. 15 is a diagram showing a ninth embodiment of the present invention.
  • the authentication system of this embodiment includes an authentication device 1300 and an authentication device 2500.
  • the authentication device 1300 has a plurality of first thermoelectric conversion elements 1311 and a control unit 1314. Further, the authentication device 1300 is provided with an incorrect answer detection thermoelectric conversion element 1318 in addition to the plurality of first thermoelectric conversion elements 1311.
  • the control unit 1314 determines whether or not the first pattern 1343, which occurs depending on which of the plurality of first thermoelectric conversion elements 1311 the user touches to generate electric power, and the incorrect-electricity detection thermoelectric conversion element 1318. That information is sent to the authentication device 2500.
  • the authentication device 2500 compares the first pattern 1343 with the correct answer pattern 1312.
  • the authentication device 2500 authenticates the user when the first pattern matches the correct pattern as a result of the comparison.
  • the authentication device 2500 does not authenticate the user when the first pattern does not match the correct pattern.
  • the authentication device 2500 does not authenticate the user when the user's finger touches the incorrect solution detection thermoelectric conversion element 1318.
  • FIG. 16 is a diagram showing a tenth embodiment of the present invention.
  • the authentication device 1400 of this embodiment includes a second thermoelectric conversion element 1411 having a correct pattern shape and a control unit 1414.
  • the control unit 1414 generates the first power generated when the user touches the second thermoelectric conversion element 1411 (1453 in FIG. 16) and the first power generated when the user touches the entire correct pattern (1452 in FIG. 16). The second power that is applied.
  • the control unit 1414 also calculates the difference between the first power and the second power.
  • the incorrect answer detection element is omitted.
  • the function of the incorrect answer detection element is as described in the first embodiment. Further, the incorrect answer detection element is arranged as shown in FIG.
  • FIG. 17 is a figure which shows the 11th Embodiment of this invention.
  • the authentication system of this embodiment includes an authentication device 1500 and an authentication device 3500.
  • the authentication device 1500 includes a second thermoelectric conversion element 1511 having a correct pattern shape and a control unit 1514.
  • the control unit 1514 authenticates the first power generated by the user touching the second thermoelectric conversion element 1511 (1553 in FIG. 17), or the information about the presence or absence of the time when the generation of the first power is interrupted. Send to device 3500.
  • the authentication device 3500 compares the first power with the second power generated when the user touches the entire correct answer pattern (1552 in FIG. 17).
  • the control unit 1514 also calculates the difference between the first power and the second power. Then, as a result of the comparison by the control unit 1514, at least one of the case where the difference between the first power and the second power is within the allowable range and the case where the generation of the first power is not interrupted is satisfied. If so, the user is authenticated.
  • the incorrect answer detection element is omitted.
  • the function of the incorrect answer detection element is as described in the first embodiment. Further, the incorrect answer detection element is arranged as shown in FIG.
  • the security is improved as in the ninth and tenth embodiments.
  • the present invention can be applied to a shape other than the card.
  • the present invention can be applied to a shape that can be easily grasped by a hand, a shape of a key chain, and the like.
  • the transmitting unit and the receiving unit are wirelessly connected, but it goes without saying that they may be wired connection.
  • the correct pattern may not be concealed in the spin thermoelectric conversion element using the ferromagnetic material. However, if it is used only once as a one-time pass and not used twice or more, a spin thermoelectric conversion element using a ferromagnetic material can be used sufficiently.
  • the user inputs the pattern while holding the authentication card or the like by hand, but the operation panel of the facility or the electronic device may be applied. That is, for example, as shown in FIG. 18, the input unit 1813 is installed as a panel on the wall.
  • the control unit and transmitter unit are embedded in the wall or installed back to back with the input unit, and hidden behind the wall. In this way, only a specific user who knows the correct answer pattern can open the door.
  • the authentication device of the present invention is applied to a key for unlocking a facility or an electronic device, but it can also be applied to a ticket, a bill, or the like. Also, instead of directly touching the card with your finger, you may touch the card with a metal pen that easily transfers heat.
  • the spin thermoelectric conversion element is used as the thermoelectric conversion element, but other types of elements such as a thermoelectric conversion element using the Seebeck effect or a Peltier element may be used.
  • the transmitting unit wirelessly transmits the authentication signal and the like, but infrared light may be used to transmit the authentication information and the like.
  • a circuit as shown in FIG. 19 may be used.
  • FIG. 19 only the control unit 14 and the transmission unit 15 of the authentication card of the first embodiment are extracted.
  • an infrared light emitting section 916 is connected to the transmitting section 15 instead of the antenna 16 (see FIG. 1).
  • the authentication signal output from the controller 14 is input to the transmitter 15.
  • the transmitter 15 adjusts the voltage and frequency of the signal and outputs the authentication signal to the infrared light emitter 916.
  • the infrared light emitting unit 916 drives the infrared light emitting LED (Light Emitting Diode) with a driving transistor to transmit infrared light carrying a signal (infrared signal) to a light receiving element (non-light receiving unit) of a receiving unit of a facility or an electronic device. The light is emitted toward (in the figure).
  • LED Light Emitting Diode
  • the infrared light emitting unit 916 drives the infrared light emitting LED (Light Emitting Diode) with a driving transistor to transmit infrared light carrying a signal (infrared signal) to a light receiving element (non-light receiving unit) of a receiving unit of a facility or an electronic device.
  • the light is emitted toward (in the figure).
  • An authentication device comprising a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit, The control unit compares a first pattern that occurs depending on which of the plurality of first thermoelectric conversion elements the user touches to generate electric power, and a correct pattern, and the first pattern is An authentication device, wherein the user is authenticated when the correct answer pattern is matched, and is not authenticated when the user touches the incorrect answer detection thermoelectric conversion element.
  • An authentication device having a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit, Of the plurality of first thermoelectric conversion elements, the control unit generates a first pattern that occurs depending on which one of the first thermoelectric conversion elements the user touches to generate electric power, and whether or not the incorrect answer detection thermoelectric conversion element is touched. Sent to the authentication device, The authentication device compares the first pattern with the correct answer pattern, authenticates the user when the first pattern matches the correct answer pattern, and the information is stored in the incorrect answer detection thermoelectric conversion element.
  • An authentication system characterized by not authenticating when a user touches it.
  • An authentication device comprising a second thermoelectric conversion element having a correct pattern shape and a control unit, The controller compares the first power generated by the user touching the second thermoelectric conversion element with the second power generated when the user touches the entire correct pattern, and the controller compares the first power with the second power. Authentication, wherein the user is authenticated when at least one of the case where the difference between the first power and the second power is within an allowable range and the case where there is no time for which the generation of the first power is interrupted is satisfied. apparatus.
  • An authentication device having a second thermoelectric conversion element having a correct pattern and a control unit is provided, The control unit sends the first power generated by the user touching the second thermoelectric conversion element, or information indicating whether or not there is a time period during which the generation of the first power is interrupted, to the authentication device, The authentication device compares the first power with the second power generated when the entire correct answer pattern is touched, and the difference between the first power and the second power is within an allowable range, and An authentication system characterized in that the user is authenticated when at least one of the cases where the generation of the first power is not interrupted is satisfied.
  • Appendix 5 The authentication system according to claim 2 or 4, further comprising an incorrect answer detection thermoelectric conversion element that becomes an incorrect answer when touched by the user.
  • the authentication device according to any one of appendices 1, 3, 6, 7, and 8, wherein a heat generating film is provided on the plurality of first thermoelectric conversion elements.
  • Appendix 10 Supplementary notes 1, 3, 6, 7, 8 that include a third thermoelectric conversion element different from the first thermoelectric conversion element, and the control unit operates using the electric power generated by the third thermoelectric conversion element.
  • the authentication device according to any one of claims 9 and 10.
  • Appendix 11 The authentication device according to any one of appendices 1, 3, 6, 7, 8, 9, and 10, wherein the control unit operates with electric power generated by the user touching the first thermoelectric conversion element.
  • thermoelectric conversion elements and the incorrect answer detection thermoelectric conversion elements are connected to the control unit by wiring, the control unit sends a signal to be sent to the target device to the transmission unit, and the transmission unit is connected to the antenna.
  • the authentication device according to appendix 1 which transmits the signal from the target device to the target device.
  • Appendix 13 The authentication device according to any one of appendices 1, 3, 6, 7, 8, 9, 10, 11, and 12, wherein the correct answer pattern is a pattern that can be written with one stroke.
  • the dummy thermoelectric conversion elements which are incorrect when touched by the user are arranged in the plurality of first thermoelectric conversion elements, in addition 1, 3, 6, 7, 8, 9, 10, 11, 11, 12, 13.
  • the authentication device according to any one of claims are provided.
  • thermoelectric conversion elements Additional notes 1, 3, 6, 7, 8, 9, 10, 11 in which dummy thermoelectric conversion elements that do not affect the correct and incorrect answers even if touched by the user are arranged in the plurality of first thermoelectric conversion elements , 12, and 13.
  • the authentication device according to any one of items. (Appendix 16) 16.
  • the authentication device according to any one of appendices 1, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 in which a guide mark is arranged at a position that is a starting point of the correct pattern.

Abstract

An authentication device according to the present invention is characterized by being provided with a plurality of first thermoelectric conversion elements, a thermoelectric conversion element for incorrect answer detection, and a control unit, wherein a portion of the plurality of thermoelectric conversion elements are thermoelectric conversion elements for incorrect answer detection, and the control unit compares a correct answer pattern with a first pattern generated according to which one a user touches among the plurality of first thermoelectric conversion elements to generate power, authenticating the user when the first pattern matches the correct answer pattern, and not authenticating the user when the user touches the thermoelectric conversion element for the incorrect answer detection. Accordingly, an authentication device and an authentication system, the security of which is enhanced, can be provided.

Description

認証装置及び認証システムAuthentication device and authentication system
　本発明は、認証装置及び認証システムに関し、例えば、鍵などの認証を伴う認証装置及び認証システムに関する。 The present invention relates to an authentication device and an authentication system, for example, an authentication device and an authentication system accompanied by authentication of a key or the like.
　特許文献１の電子機器は、電池などの電源部と、この電源部を電源として作動する機能素子と、機能素子の作動を制御する制御部を有し、さらに環境発電を行う発電部（圧電素子、熱電素子など）を有する。発電部は、発電して信号を生成する。制御部は、発電部により生成された信号を契機として、起動され、ＩＣ（Integrated Circuit）カードが動作する。制御部と機能素子は、電源部から電源供給を受けて、作動する。 The electronic device of Patent Document 1 includes a power supply unit such as a battery, a functional element that operates using this power supply unit as a power source, and a control unit that controls the operation of the functional device, and further includes a power generation unit (piezoelectric element) that performs environmental power generation. , Thermoelectric elements, etc.). The power generation unit generates power and generates a signal. The control unit is activated by the signal generated by the power generation unit, and the IC (Integrated Circuit) card operates. The control unit and the functional element operate by receiving power supply from the power supply unit.
　電子機器がＩＣカードである場合（特許文献１の図２、段落［００３５］～段落［００４６］）、発電部がＩＣカード１００の操作部１３０に配置され、複数の圧電素子１４０がマトリクス状に配置される。この場合、たとえば、指やペンで文字を描くと、筆圧を受けて文字の下の圧電素子１４０が発電する。制御部２０は、どの圧電素子が発電したかを検出し、特定の圧電素子が発電した場合に、動作モードの移行や、表示部への作動の指示を行う。 When the electronic device is an IC card (FIG. 2 of Patent Document 1, paragraphs [0035] to [0046]), the power generation unit is arranged in the operation unit 130 of the IC card 100, and the plurality of piezoelectric elements 140 are arranged in a matrix. Will be placed. In this case, for example, when a character is drawn with a finger or a pen, the piezoelectric element 140 under the character receives a writing pressure to generate power. The control unit 20 detects which piezoelectric element has generated electric power, and when a specific piezoelectric element has generated electric power, the control unit 20 gives an instruction to shift the operation mode or operate the display unit.
特開２０１５－０９７４５３号公報Japanese Unexamined Patent Publication No. 2015-097453 特開２０１５－１０９００９号公報Japanese Unexamined Patent Application Publication No. 2015-10909 国際公開第２０１４／０１０３２１号International Publication No. 2014/010321 特開２００４－２７２７１９号公報JP-A-2004-272719 特開２０１６－１４６０４０号公報JP, 2016-146040, A 特開２０１３－０６４９２１号公報JP, 2013-064921, A 特開２０１０－０８５５２８号公報JP, 2010-085528, A 特開２００６－３０１７１１号公報JP, 2006-301711, A
　特許文献３に記載の技術では、マトリクス状に配置された圧電素子の上に、指やペンで文字が描かれ、その文字が正しいかどうかが判定されている。しかし、表示部への作動の指示のための文字の設定では、ユーザが文字を忘れないように、簡単な文字を設定することがしばしばある。すると、偶然正解の文字を描いてしまうことがあり、セキュリティの面では問題である。 In the technique described in Patent Document 3, characters are drawn on a piezoelectric element arranged in a matrix with a finger or a pen, and it is determined whether the characters are correct. However, when setting a character for instructing the display unit to operate, a simple character is often set so that the user does not forget the character. Then, the correct answer may be drawn by accident, which is a security problem.
　本発明の目的は、このような事情を鑑みてなされたものであり、セキュリティを向上させた認証装置及び認証システムを提供することである。 The object of the present invention has been made in view of such circumstances, and it is to provide an authentication device and an authentication system with improved security.
　本発明の認証装置は、複数の第１の熱電変換素子、不正解検知用熱電変換素子及び制御部を備えた認証装置であって、前記制御部は、前記複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、正解パターンとを比較し、前記第１のパターンが前記正解パターンに一致した場合に前記ユーザを認証し、前記不正解検知用熱電変換素子に前記ユーザが触れると認証しない。 The authentication device of the present invention is an authentication device including a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit, wherein the control unit includes a plurality of first thermoelectric conversion elements. Of these, a first pattern that occurs depending on how the user touches to generate power and a correct answer pattern are compared, and if the first pattern matches the correct answer pattern, the user is authenticated, and When the user touches the incorrect answer detection thermoelectric conversion element, authentication is not performed.
　また、本発明の認証システムは、複数の第１の熱電変換素子、不正解検知用熱電変換素子及び制御部を備えた認証用装置を備え、前記制御部は、前記複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、前記不正解検知用熱電変換素子に触れたか否かの情報を認証装置に送り、前記認証装置は前記第１のパターンと正解パターンとを比較し、前記第１のパターンが前記正解パターンに一致した場合に前記ユーザを認証し、前記情報が前記不正解検知用熱電変換素子に前記ユーザが触れたことを示すと認証しない。 Further, the authentication system of the present invention includes an authentication device including a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit, and the control unit includes the plurality of first thermoelectric conversion elements. Of the elements, a first pattern that occurs depending on which one of the elements is touched by the user to generate electric power, and information on whether or not the incorrect answer detection thermoelectric conversion element is touched is sent to the authentication apparatus, and the authentication apparatus The first pattern and the correct answer pattern are compared, the user is authenticated when the first pattern matches the correct answer pattern, and the information is touched by the user on the incorrect answer detecting thermoelectric conversion element. Will not be authenticated.
　また、本発明の認証装置は、正解パターン形状を持つ第２の熱電変換素子と制御部を備えた認証装置であって、前記制御部は、ユーザが前記第２の熱電変換素子に触れて生成した第１の電力と、正解パターン全体に触れた場合に生成する第２の電力とを前記制御部が比較し、前記第１、第２の電力の差が許容範囲内であった場合及び前記第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に前記ユーザが認証される。 Further, the authentication device of the present invention is an authentication device including a second thermoelectric conversion element having a correct pattern shape and a control unit, wherein the control unit is generated by a user touching the second thermoelectric conversion element. The first power and the second power generated when the entire correct pattern is touched are compared by the control unit, and the difference between the first power and the second power is within an allowable range, and The user is authenticated when at least one of the cases where the generation of the first power is not interrupted is satisfied.
　また、本発明の認証システムは、正解パターン形状を持つ第２の熱電変換素子と制御部を有する認証用装置を備え、前記制御部は、ユーザが前記第２の熱電変換素子に触れて生成した第１の電力、または、前記第１の電力の生成が途切れる時間の有無の情報を認証装置に送り、前記認証装置は、前記第１の電力と正解パターン全体に触れた場合に生成する第２の電力とを比較して前記第１、第２の電力の差が許容範囲内であった場合、及び、前記第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に前記ユーザが認証される。 Further, the authentication system of the present invention includes an authentication device having a second thermoelectric conversion element having a correct pattern shape and a control unit, and the control unit is generated by a user touching the second thermoelectric conversion element. The first power or information about whether or not the generation of the first power is interrupted is sent to the authentication device, and the authentication device generates the second power when the first power and the entire correct answer pattern are touched. When the difference between the first power and the second power is within an allowable range by comparing with the power of, and at least one of the time when the generation of the first power is not interrupted is satisfied, The user is authenticated.
　本発明によれば、セキュリティを向上させた認証装置及び認証システムを提供できる。 According to the present invention, it is possible to provide an authentication device and an authentication system with improved security.
本発明の第１の実施形態の認証カードの内部構成を示すブロック図である。It is a block diagram which shows the internal structure of the authentication card of the 1st Embodiment of this invention. 図１の認証カードのＡ－Ａ’における概略断面図である。FIG. 2 is a schematic sectional view taken along the line A-A′ of the authentication card in FIG. 1. 図１，２のスピン熱電変換素子と不正解検知素子の構造の一例を示す斜視図である。It is a perspective view which shows an example of the structure of the spin thermoelectric conversion element and incorrect answer detection element of FIGS. 図１～３の認証カードの動作を説明する図である。FIG. 4 is a diagram illustrating an operation of the authentication card of FIGS. 1 to 3. 本発明の第１の実施形態の認証カードを説明する図である。It is a figure explaining the authentication card of the 1st Embodiment of this invention. 本発明の第１の実施形態の認証カードを説明する図である。It is a figure explaining the authentication card of the 1st Embodiment of this invention. 本発明の第２の実施形態の認証システムを説明する図である。It is a figure explaining the authentication system of the 2nd Embodiment of this invention. 本発明の第３の実施形態を説明する図である。It is a figure explaining the 3rd Embodiment of this invention. 本発明の第３の実施形態を説明する図である。It is a figure explaining the 3rd Embodiment of this invention. 本発明の第３の実施形態を説明する図である。It is a figure explaining the 3rd Embodiment of this invention. 本発明の第４の実施形態を説明する図である。It is a figure explaining the 4th Embodiment of this invention. 本発明の第６の実施形態を説明する断面図である。It is sectional drawing explaining the 6th Embodiment of this invention. 本発明の第６の実施形態を説明する断面図である。It is sectional drawing explaining the 6th Embodiment of this invention. 本発明の第７の実施形態を説明するブロック図である。It is a block diagram explaining the 7th Embodiment of this invention. 本発明の第８の実施形態を説明する図である。It is a figure explaining the 8th Embodiment of this invention. 本発明の第９の実施形態を説明する図である。It is a figure explaining the 9th Embodiment of this invention. 本発明の第１０の実施形態を説明する図である。It is a figure explaining the 10th Embodiment of this invention. 本発明の第１１の実施形態を説明する図である。It is a figure explaining the 11th Embodiment of this invention. 本発明の別の実施形態を説明する図である。It is a figure explaining another embodiment of this invention. 本発明の別の実施形態を説明するブロック図である。It is a block diagram explaining another embodiment of the present invention.
　（第１の実施形態）
　（構成の説明）
　図１～図４を用いて、本発明の第１の実施形態を説明する。図１は、本実施形態の認証カード１０の内部構成を示すブロック図である。認証カード１０は、本発明の認証装置の一例である。本実施形態では、ユーザが何らかの施設に入ったり、何らかの電子装置を使用したりする鍵として、施設または電子装置２００の受信部２０１に認証情報を発信するために、認証カード１０を使う場合を説明する。 (First embodiment)
(Description of configuration)
A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. FIG. 1 is a block diagram showing the internal configuration of the authentication card 10 of this embodiment. The authentication card 10 is an example of the authentication device of the present invention. In the present embodiment, a case will be described in which the authentication card 10 is used to transmit authentication information to the reception unit 201 of the facility or the electronic device 200 as a key for the user to enter the facility or use the electronic device. To do.
　図１を参照して、認証カード１０は、入力部１３、制御部１４、発信部１５、およびアンテナ１６を備える。入力部１３は、複数個（ここでは８個）のスピン熱電変換素子１１と、１個の不正解検知用スピン熱電変換素子１８とを備えている。複数個のスピン熱電変換素子１１と、１個の不正解検知用スピン熱電変換素子１８は、図１に示されるように、平面上に配置されている。また、図１を参照して、開錠のための正解パターン１２の一例が、複数個のスピン熱電変換素子１１と１個の不正解検知用スピン熱電変換素子１８の配置に応じて、設定されている。スピン熱電変換素子１１は、第１の熱電変換素子に対応する。不正解検知用スピン熱電変換素子１８は、不正解検知用熱電変換素子に対応する。以下、不正解検知用スピン熱電変換素子は、不正解検知素子と略称する場合がある。制御部１４は、第１の制御部の一例である。 With reference to FIG. 1, the authentication card 10 includes an input unit 13, a control unit 14, a transmission unit 15, and an antenna 16. The input unit 13 includes a plurality (here, eight) of spin thermoelectric conversion elements 11 and one incorrect solution detection spin thermoelectric conversion element 18. A plurality of spin thermoelectric conversion elements 11 and one incorrect solution detection spin thermoelectric conversion element 18 are arranged on a plane, as shown in FIG. Further, referring to FIG. 1, an example of the correct answer pattern 12 for unlocking is set according to the arrangement of the plurality of spin thermoelectric conversion elements 11 and one incorrect answer detection spin thermoelectric conversion element 18. ing. The spin thermoelectric conversion element 11 corresponds to the first thermoelectric conversion element. The incorrect answer detection spin thermoelectric conversion element 18 corresponds to an incorrect answer detection thermoelectric conversion element. Hereinafter, the incorrect thermoelectric conversion spin thermoelectric conversion element may be abbreviated as an incorrect answer detection element. The control unit 14 is an example of a first control unit.
　図１に破線で例示された正解パターン１２は、アルファベットの略Ｃの字の形状である。言い換えると、カタカナの“コ”の字を左右逆にした形状である。正解パターンは、どのような形状でもよく、Ｃの他に例えば“Ｍ”、“Ｚ”、“Ｓ”、“２”、“３”、“Ａ”、“田”等であってもよい。不正解検知素子１８の位置との兼ね合いを考慮して、複数個のスピン熱電変換素子１１で形作ればよい。なお、一筆書きできるパターンは、指を認証カード１０から離さなくてよく、誤入力が少ない。 The correct answer pattern 12 illustrated by the broken line in FIG. 1 is in the shape of the letter C of the alphabet. In other words, the shape of the katakana "U" is reversed. The correct pattern may have any shape, and may be, for example, “M”, “Z”, “S”, “2”, “3”, “A”, “field” or the like in addition to C. In consideration of the balance with the position of the incorrect answer detection element 18, the spin thermoelectric conversion element 11 may be formed. It should be noted that the pattern that can be drawn with one stroke does not require the finger to be released from the authentication card 10, and there are few incorrect inputs.
　制御部１４は、認証カード１０全体の動作を制御する。図１を参照して、制御部１４は、図平面視で、スピン熱電変換素子１１、および不正解検知素子１８とは重ならない位置に配置され、カード内部に埋め込まれる。図１の例では、制御部１４は、入力端子を介して、８個のスピン熱電変換素子１１と不正解検知素子１８の全てと、カード内部で、別々の内部配線１９によって接続されている。制御部１４は、制御部１４の入力端子のいずれかへの入力を検知することで、スピン熱電変換素子１１および不正解検知素子１８のうちでどの素子からの入力かを識別できる。入力があった素子を時系列でつなげると、ユーザが入力したパターン（文字）を描くことができる。このパターンが、ユーザがどの素子に触れて電力を生成したかで生起する第１のパターンに対応する。制御部１４は、内部に正解パターン１２の情報を記憶している。ユーザがスピン熱電変換素子１１または不正解検知素子１８に指で触れることによって、体温がスピン熱電変換素子１１または不正解検知素子１８に伝達される。スピン熱電変換素子１１または不正解検知素子１８は、ともに熱変換素子であるため、体温が伝達されると、発電する。さらに、触れた状態で指を移動させていくことで発生する摩擦熱による発電も、スピン熱電変換素子１１または不正解検知素子１８に加わる。スピン熱電変換素子１１または不正解検知素子１８で生成された電力は、内部配線１９を経由して、制御部１４に供給される。この電力供給によって、制御部１４は、起動する。 The control unit 14 controls the operation of the entire authentication card 10. With reference to FIG. 1, the control unit 14 is arranged at a position not overlapping the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 in a plan view, and is embedded inside the card. In the example of FIG. 1, the control unit 14 is connected to all of the eight spin thermoelectric conversion elements 11 and the incorrect answer detection elements 18 via the input terminals by separate internal wiring 19 inside the card. The control unit 14 can identify which of the spin thermoelectric conversion element 11 and the incorrect solution detection element 18 is the input by detecting an input to any one of the input terminals of the control unit 14. By connecting the input elements in time series, the pattern (character) input by the user can be drawn. This pattern corresponds to the first pattern that occurs depending on which element the user touches to generate electric power. The control unit 14 internally stores information on the correct answer pattern 12. When the user touches the spin thermoelectric conversion element 11 or the incorrect solution detection element 18 with a finger, the body temperature is transmitted to the spin thermoelectric conversion element 11 or the incorrect solution detection element 18. Since both the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 are heat conversion elements, they generate power when the body temperature is transmitted. Further, power generation due to frictional heat generated by moving a finger while touching is also applied to the spin thermoelectric conversion element 11 or the incorrect solution detection element 18. The electric power generated by the spin thermoelectric conversion element 11 or the incorrect solution detection element 18 is supplied to the control unit 14 via the internal wiring 19. The control unit 14 is activated by this power supply.
　ユーザがスピン熱電変換素子１１をすべて指でなぞって生起した第１のパターンが、正解パターン１２と等しくなると、制御部１４は、ユーザ認証を通す。図１の例では、不正解検知用素子１８は、Ｃ字の中央右寄りに、１個配置されている。ユーザがこの不正解検知用素子１８に触れると、第１のパターンが不正解であると見なして、ユーザ認証を通さない。すなわち、制御部１４は、第１のパターンと正解パターン１２とを比較する。そして、制御部１４は、比較の結果、第１のパターンが正解パターン１２に一致した場合に、ユーザを認証する。一方、制御部１４は、比較の結果、第１のパターンが正解パターン１２に一致しない場合に、ユーザを認証しない。制御部１４は、不正解検知用熱電変換素子１８にユーザの指が触れると、ユーザを認証しない。 When the first pattern generated by the user tracing all the spin thermoelectric conversion elements 11 with the finger is equal to the correct answer pattern 12, the control unit 14 passes the user authentication. In the example of FIG. 1, one incorrect answer detection element 18 is arranged to the right of the center of the C-shape. When the user touches the incorrect answer detection element 18, the first pattern is regarded as an incorrect answer and user authentication is not passed. That is, the control unit 14 compares the first pattern with the correct answer pattern 12. Then, as a result of the comparison, the control unit 14 authenticates the user when the first pattern matches the correct answer pattern 12. On the other hand, as a result of the comparison, the control unit 14 does not authenticate the user when the first pattern does not match the correct answer pattern 12. When the user's finger touches the incorrect answer detection thermoelectric conversion element 18, the control unit 14 does not authenticate the user.
　ユーザが正解パターン１２をなぞり、不正解検知素子１８に触れなかったら、制御部１４は、対象装置の開錠を許可する開錠許可信号を発信部１５に出力する。制御部１４は、例えば小規模なプロセッサチップである。 If the user traces the correct answer pattern 12 and does not touch the incorrect answer detection element 18, the control unit 14 outputs an unlocking permission signal to the transmitting unit 15, which permits unlocking of the target device. The control unit 14 is, for example, a small processor chip.
　発信部１５は、制御部１４の指示に従って、制御部１４により出力された開錠許可信号を無線周波数に乗せ、アンテナ１６を介して、カード外部へ発信する。図１を参照して、発信部１５は、認証カード１の内部の他の回路と重ならない位置に、埋め込まれている。発信部１５には制御部１４から電源が供給され、アンテナ１６には発信部１５から電源が供給される。開錠許可信号は、アンテナ１６から施設または電子装置２００に向けて発信される。発信部１５には制御部１４と同様にスピン熱電変換素子１１（と不正解検知素子１８）から電力を供給してもよい。 According to the instruction of the control unit 14, the transmission unit 15 puts the unlocking permission signal output by the control unit 14 on the radio frequency and transmits it to the outside of the card via the antenna 16. Referring to FIG. 1, transmitter 15 is embedded at a position that does not overlap with other circuits inside authentication card 1. The transmitter 15 is supplied with power from the controller 14, and the antenna 16 is supplied with power from the transmitter 15. The unlocking permission signal is transmitted from the antenna 16 to the facility or the electronic device 200. The transmitter 15 may be supplied with electric power from the spin thermoelectric conversion element 11 (and the incorrect answer detection element 18) as in the controller 14.
　図２は、図１の認証カード１０のＡ－Ａ’における概略断面図である。認証カード１０では、樹脂製のカード基板２１の内部にスピン熱電変換素子１１と不正解検知素子１８が、埋め込まれている。また、スピン熱電変換素子１１および不正解検知素子１８の上には、目隠し膜２５となる絶縁層が形成されている。スピン熱電変換素子１１、不正解検知素子１８は、ユーザの指の熱を十分受けることができるように、起電体をカード表面に露出させている。あるいは、スピン熱電変換素子１１、不正解検知素子１８は、ユーザの指の熱を十分受けることができるように、熱伝導性の良い保護膜（たとえば、窒化珪素、窒化硼素、アルミナ、窒化アルミ等）をカード基板２１の表面に薄く形成する。起電体をカード表面に露出させる場合も、熱伝導性の良い保護膜をカード基板２１の表面に薄く形成する場合も、スピン熱電変換素子１１および不正解検知素子１８による凹凸が、カード基板２１の表面に出てしまう可能性がある。目隠し膜２５は、その凹凸を隠すためのもので、塗布や貼り付けなどによって、できる限りカード表面が平坦になるようにカード基板２１の表面に取り付けられる。目隠し膜２５は、不透明であることが望ましい。目隠し膜２５に透明な材料を使う場合は、当該透明な材料に塗料を混ぜたり、当該透明な材料に不透明な薄い膜を貼ったりすることができる。これにより、透明な材料を用いても、目隠し膜２５を不透明にすることができる。スピン熱電変換素子１１および不正解検知素子１８は、内部配線（不図示）によって、制御部１４の入力端子に接続されている。制御部１４と発信部１５は、カード基板２１の内部に埋め込まれている。また、制御部１４と発信部１５は、内部配線２２によって接続されている。 FIG. 2 is a schematic sectional view taken along the line A-A′ of the authentication card 10 shown in FIG. In the authentication card 10, a spin thermoelectric conversion element 11 and an incorrect answer detection element 18 are embedded inside a card substrate 21 made of resin. Further, an insulating layer serving as a blindfold film 25 is formed on the spin thermoelectric conversion element 11 and the incorrect answer detection element 18. In the spin thermoelectric conversion element 11 and the incorrect answer detection element 18, the electromotive body is exposed on the card surface so that the heat of the user's finger can be sufficiently received. Alternatively, the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 have a protective film with good thermal conductivity (eg, silicon nitride, boron nitride, alumina, aluminum nitride, etc.) so that they can sufficiently receive the heat of the user's finger. ) Is thinly formed on the surface of the card substrate 21. Whether the electromotive body is exposed on the surface of the card or a protective film having good thermal conductivity is formed thinly on the surface of the card substrate 21, the irregularities due to the spin thermoelectric conversion element 11 and the incorrect answer detection element 18 cause the card substrate 21 to become uneven. May appear on the surface of. The blindfold film 25 is for hiding the irregularities, and is attached to the surface of the card substrate 21 by coating or pasting so that the card surface is as flat as possible. The blindfold film 25 is preferably opaque. When a transparent material is used for the blindfold film 25, the transparent material may be mixed with a coating material, or an opaque thin film may be attached to the transparent material. Thereby, the blindfold film 25 can be made opaque even if a transparent material is used. The spin thermoelectric conversion element 11 and the incorrect answer detection element 18 are connected to the input terminal of the control unit 14 by internal wiring (not shown). The controller 14 and the transmitter 15 are embedded inside the card substrate 21. The control unit 14 and the transmission unit 15 are connected by the internal wiring 22.
　図３はスピン熱電変換素子１１と不正解検知素子１８の構造の一例を示す斜視図である。図３を参照して、ＧＧＧ（Gadolinium Gallium Garnet、Gd3Ga5O12）等の材料で形成されたＧＧＧ基板３１上に、磁性体として、Ｂｉ：ＹＩＧ（Yttrium Iron Garnet）膜（Biを添加したY3Fe5O12）等の磁性絶縁体層３２を形成する。磁性絶縁体層３２は、面内方向（図３のＭ）に磁化されている。磁性絶縁体層３２上に、起電体として、Ｐｔ等の金属膜３３が形成され、金属膜３３の両端に電極３４，３５が設けられている。図２を参照して、スピン熱電変換素子１１は、カード基板２１の表面（上面）に形成された凹部に、図中のＸＹ面をカード基板２１の主面と平行になるようにして埋め込まれている。また、スピン熱電変換素子１１では、電極３４，３５のどちらかが、内部配線１９（図３にて不図示。図１を参照。）と接続するように配置されている。内部配線１９と接続しない方の電極は、接地されている（不図示）。 FIG. 3 is a perspective view showing an example of the structures of the spin thermoelectric conversion element 11 and the incorrect solution detection element 18. Referring to FIG. 3, a Bi:YIG (Yttrium Iron Garnet) film (Bi is added as a magnetic material on a GGG substrate 31 formed of a material such as GGG (Gadolinium Gallium Garnet, Gd 3 Ga 5 O 12 ). Then, a magnetic insulator layer 32 such as Y 3 Fe 5 O 12 ) is formed. The magnetic insulator layer 32 is magnetized in the in-plane direction (M in FIG. 3). A metal film 33 of Pt or the like is formed as an electromotive material on the magnetic insulator layer 32, and electrodes 34 and 35 are provided on both ends of the metal film 33. Referring to FIG. 2, spin thermoelectric conversion element 11 is embedded in a recess formed on the surface (upper surface) of card substrate 21 with the XY plane in the figure parallel to the main surface of card substrate 21. ing. Further, in the spin thermoelectric conversion element 11, one of the electrodes 34 and 35 is arranged so as to be connected to the internal wiring 19 (not shown in FIG. 3, see FIG. 1). The electrode that is not connected to the internal wiring 19 is grounded (not shown).
　磁性絶縁体として、Ｂｉ：ＹＩＧ膜以外に、ガーネットフェライト（イットリウム鉄フェライト）、スピネルフェライト等の酸化物磁性材料を用いることができる。また、酸化物磁性材料以外でも、磁化を有する金属を用いることもできる。さらに、磁性絶縁体は、バルクでも薄膜でもよい。起電体としては、スピン軌道相互作用が大きい材料が望ましく、Ｐｔ以外にＡｕ、Ｐｄを用いることができる。また、磁化を持つ金属（Ｐｔ、Ａｕ、Ｐｄ）のうち、２種類以上の金属を含む合金等を起電体に用いることができる。さらに、逆スピンホール効果を高めるために、これらの金属（Ｐｔ、Ａｕ、Ｐｄ）または合金にＦｅ、Ｃｕ、Ｉｒなどの不純物を添加してもよい。図３のスピン熱電変換素子１１として、スピンゼーベック効果とは別に、導電性のある磁性金属における異常ネルンスト効果（ＡＮＥ（Ａｎｏｍａｌｏｕｓ　Ｎｅｒｎｓｔ　Ｅｆｆｅｃｔ））と呼ばれる別種の熱電効果を有する材料を活用することもできる。異常ネルンスト効果とは、磁化した磁性体に熱流を流した際、磁化の向きと熱流の向きのそれぞれと直交する方向（外積方向）に電圧が生じる現象である。異常ネルンスト効果に基づくスピン熱電変換素子は、一方向に磁化を有するＭｎ、Ｆｅ、ＣｏやＮｉなどの磁性金属や、それらを母材とした磁性合金からなる膜や板状の構造をもつ。これに面内の一方向に磁化を与え、さらに面直方向の温度勾配を印加すると、面内の所望の方向に電流が駆動される。 As the magnetic insulator, oxide magnetic materials such as garnet ferrite (yttrium iron ferrite) and spinel ferrite can be used in addition to the Bi:YIG film. In addition to the oxide magnetic material, a magnetized metal can also be used. Further, the magnetic insulator may be bulk or thin film. As the electromotive material, a material having a large spin-orbit interaction is desirable, and Au or Pd can be used instead of Pt. Further, among magnetized metals (Pt, Au, Pd), an alloy containing two or more kinds of metals can be used as the electromotive body. Further, impurities such as Fe, Cu and Ir may be added to these metals (Pt, Au, Pd) or alloys in order to enhance the inverse spin Hall effect. In addition to the spin Seebeck effect, a material having another type of thermoelectric effect called an anomalous Nernst effect (ANE (Anomalous Nernst Effect)) in a conductive magnetic metal can be used as the spin thermoelectric conversion element 11 in FIG. .. The abnormal Nernst effect is a phenomenon in which when a heat flow is applied to a magnetized magnetic body, a voltage is generated in a direction (outer product direction) orthogonal to the magnetization direction and the heat flow direction. The spin thermoelectric conversion element based on the anomalous Nernst effect has a film or plate-like structure made of a magnetic metal having magnetization in one direction, such as Mn, Fe, Co, or Ni, or a magnetic alloy containing them as a base material. When magnetization is applied to this in one direction in the plane and a temperature gradient in the direction perpendicular to the plane is applied, a current is driven in a desired direction in the plane.
　このようにして形成されたスピン熱電変換素子１１に、指の熱による温度勾配∇Tが加わると、Ｂｉ：ＹＩＧ膜（磁性絶縁体層３２）はスピンゼーベック効果によって温度勾配の方向にスピン流を生成する。Ｂｉ：ＹＩＧ膜（磁性絶縁体層３２）により生成されたスピン流は、磁性絶縁体層３２に接合された金属膜３３に流れ込み、逆スピンホール効果によって、スピン流方向（∇Ｔの方向と同じ）とＢｉ：ＹＩＧ膜（磁性絶縁体層３２）の磁化方向とに直交する方向（金属膜３３のＸＹ面内方向）に電流が生成される。生成された電流は金属膜３３に起電力（図３中のＥ）を生起させ、この起電力を、金属膜３３の両端に設けられた電極３４，３５で、電位差として取り出すことができる。 When a temperature gradient ∇T due to finger heat is applied to the spin thermoelectric conversion element 11 thus formed, the Bi:YIG film (magnetic insulator layer 32) produces a spin current in the temperature gradient direction due to the spin Seebeck effect. To generate. The spin current generated by the Bi:YIG film (magnetic insulator layer 32) flows into the metal film 33 bonded to the magnetic insulator layer 32, and due to the inverse spin Hall effect, the spin current direction (the same as the direction of ∇T). ) And a Bi:YIG film (magnetic insulator layer 32) in a direction orthogonal to the magnetization direction (in the XY in-plane direction of the metal film 33). The generated current causes an electromotive force (E in FIG. 3) to be generated in the metal film 33, and this electromotive force can be taken out as a potential difference by the electrodes 34 and 35 provided at both ends of the metal film 33.
　（動作の説明）
　図４は、図１～３で述べた認証カード１０の動作を説明する図である。制御部１４は、複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、制御部１４の不揮発の記憶部（不図示）に記憶している正解パターンとを比較し、第１のパターンが正解パターンに一致した場合にユーザを認証する。 (Explanation of operation)
FIG. 4 is a diagram for explaining the operation of the authentication card 10 described in FIGS. The control unit 14 stores a first pattern that occurs depending on which one of the plurality of first thermoelectric conversion elements is touched by the user to generate power, and a non-volatile storage unit (not shown) of the control unit 14 to store the first pattern. If the first pattern matches the correct answer pattern, the user is authenticated.
　ユーザが、正解と思うパターンに従って、指でスピン熱電変換素子１１に触れると、指の熱がスピン熱電変換素子１１に伝わる。指をなぞっていくとスピン熱電変換素子１１の表面を指で擦ることになるので、それによって発生する摩擦熱もスピン熱電変換素子１１に加わる。指が触れたスピン熱電変換素子１１の表面とスピン熱電変換素子１１の反対側の間に、図３で説明した温度勾配∇Tが加わって、起電力Ｅが発生し電力を得ることができる。発生した電力は、内部配線１９によって制御部１４に供給される。そして、この電力の供給によって、制御部１４が起動する。 When the user touches the spin thermoelectric conversion element 11 with a finger according to a pattern that they think is correct, the heat of the finger is transferred to the spin thermoelectric conversion element 11. When the finger is traced, the surface of the spin thermoelectric conversion element 11 is rubbed with the finger, so that frictional heat generated thereby is also applied to the spin thermoelectric conversion element 11. The temperature gradient ∇T described in FIG. 3 is applied between the surface of the spin thermoelectric conversion element 11 that is touched by the finger and the opposite side of the spin thermoelectric conversion element 11, and the electromotive force E is generated to obtain electric power. The generated power is supplied to the control unit 14 by the internal wiring 19. Then, the control unit 14 is activated by the supply of this electric power.
　図３および図４を参照して、正解パターン４２のように略Ｃ字に指で認証カード１０をなぞれば、制御部１４は、正解と判断する。そして、制御部１４は記憶している開錠のための暗証番号に該当する信号を生成して、この信号を発信部１５に伝達する。発信部１５は、発信部１５により発信された信号を受け、無線周波数に乗せる（変調する）などの信号処理を行い、アンテナ１６を介して施設または電子装置２００の受信部２０１に発信する。これにより、施設または電子装置２００が開錠される。 Referring to FIGS. 3 and 4, if the authentication card 10 is traced in a substantially C-shape with a finger like the correct answer pattern 42, the control unit 14 determines that the answer is correct. Then, the control unit 14 generates a signal corresponding to the stored personal identification number for unlocking and transmits this signal to the transmission unit 15. The transmitting unit 15 receives the signal transmitted by the transmitting unit 15, performs signal processing such as placing (modulating) on the radio frequency, and transmits the signal to the receiving unit 201 of the facility or the electronic device 200 via the antenna 16. As a result, the facility or the electronic device 200 is unlocked.
　しかし、図３および図４を参照して、不正解パターン４３のように指で認証カード１０をなぞると、制御部１４は、不正解と判断する。そして、制御部１４は、暗証番号に対応する信号を生成しない。また、指で不正解検知素子１８に触れてしまうと、それだけで、制御部１４は不正解と判断する。また、不正解パターン４４のように、正解パターンである略Ｃ字になぞっても、その後不正解検知素子１８に触れてしまうと、制御部１４は不正解と判断する。図４に例示するように、正解パターン４２が略Ｃ字の場合、不正解検知素子１８は、略Ｃ字の内側の中央に配置されると良い。また、不正解検知素子１８は、複数配置されてもよい。 However, referring to FIGS. 3 and 4, when the authentication card 10 is traced with a finger as in the incorrect answer pattern 43, the control unit 14 determines that the incorrect answer is obtained. Then, the control unit 14 does not generate a signal corresponding to the personal identification number. Moreover, when the incorrect touch detection element 18 is touched with a finger, the control unit 14 determines that the answer is incorrect. Further, when the incorrect answer detection element 18 is touched even after tracing the correct answer pattern, that is, a substantially C-shape like the incorrect answer pattern 44, the control unit 14 determines that it is an incorrect answer. As illustrated in FIG. 4, when the correct answer pattern 42 is substantially C-shaped, the incorrect answer detection element 18 may be arranged at the center inside the substantially C-shaped. Further, a plurality of incorrect answer detection elements 18 may be arranged.
　なお、ユーザが意図せず不正解検知素子１８に触れてしまうこともあるので、１回触れただけでは不正解と制御部１４に判断させず、複数回触れた場合に不正解と制御部１４に判定させてもよい。また、制御部１４は、所定時間内にユーザがなぞった不正解パターンの回数を不揮発の記憶部に記憶しておき、所定の回数（例えば５回）に達するとそれ以降の一定期間にパターンの入力を受け付けないようにしてもよい。 Since the user may touch the incorrect answer detection element 18 unintentionally, the controller 14 does not judge the incorrect solution by only touching it once. May be determined. In addition, the control unit 14 stores the number of incorrect answer patterns traced by the user within a predetermined time in a non-volatile storage unit, and when the predetermined number of times (for example, 5 times) is reached, the pattern is stored in a fixed period thereafter. Input may not be accepted.
　なお、制御部１４は、複数配置されたスピン熱電変換素子１１に触れる順番も考慮して、正解または不正解を判定してもよい。そのためには、制御部１４の不揮発の記憶部に、正解パターンと共に、正しい順番（正解順序）も記憶しておき、正解パターンと正解順序の両方をクリアした場合に施設または電子装置２００を開錠する必要がある。正解順序は、通常は１つだけ設定されて記憶部に記憶される。一方、正解パターンが複雑な場合には、正解順序は、複数設定されて記憶部に記憶されてもよい。 Note that the control unit 14 may determine the correct answer or the incorrect answer in consideration of the order in which the plurality of arranged spin thermoelectric conversion elements 11 are touched. To that end, the correct order (correct order) is stored together with the correct answer pattern in the nonvolatile storage section of the control section 14, and the facility or the electronic device 200 is unlocked when both the correct answer pattern and the correct answer order are cleared. There is a need to. Normally, only one correct order is set and stored in the storage unit. On the other hand, when the correct answer pattern is complicated, a plurality of correct answer orders may be set and stored in the storage unit.
　また、図１および図４を参照して、入力部１３（図４にて不図示）の外形に対応する認証カード１０の表面に、枠線４５（図１にて不図示）を描いてもよい。この場合、認証カード１０の表面のうち、どの範囲内に指を触れればよいか分かりやすい。入力部１３の外形および枠線４５は互いに対応する位置に配置されている。また、枠線４５を認証カード１０の表面に描く場合も描かない場合も、入力部１３に対応する箇所のカード表面の色を他の表面の色と塗り分けておいてもよい。 Further, referring to FIGS. 1 and 4, a frame line 45 (not shown in FIG. 1) may be drawn on the surface of the authentication card 10 corresponding to the outer shape of the input unit 13 (not shown in FIG. 4). Good. In this case, it is easy to understand which range of the surface of the authentication card 10 should be touched with a finger. The outer shape of the input unit 13 and the frame line 45 are arranged at positions corresponding to each other. In addition, regardless of whether the frame line 45 is drawn on the surface of the authentication card 10 or not, the color of the card surface at the portion corresponding to the input unit 13 may be painted separately from the other surface colors.
　また、わざと不正解パターン４３、４４を線または色で識別可能に描いておくことによって、不正なユーザを惑わすこともできる。更に、その不正解パターン４３、４４を１回でもなぞると、認証カード１０が使えなくなるようにしてもよい。 Further, by intentionally drawing the incorrect answer patterns 43 and 44 in a distinguishable manner with lines or colors, it is possible to deceive an unauthorized user. Further, if the incorrect answer patterns 43 and 44 are traced even once, the authentication card 10 may be disabled.
　また、正解パターン４２の始点となる箇所に「＋」のようなガイドマークを付けておいてもよい。ガイドマークは、＋以外に丸、三角、矩形等他の形状でもよい。また、ガイドマークを他の箇所とは異なる色にして目立たせてもよい。 Also, a guide mark such as “+” may be attached to the starting point of the correct answer pattern 42. The guide mark may have a shape other than +, such as a circle, a triangle, or a rectangle. In addition, the guide mark may be made different in color from the other parts so as to be conspicuous.
　また、図１の８個のスピン熱電変換素子１１は、正解パターンである略Ｃ字を描くように配置されているが、図５Ａに示すように、ダミーのスピン熱電変換素子１１０（以下ダミー素子と略称する場合がある。）を認証カード１０に配置してもよい。なお、図５Ａでは、ダミー素子は、入力部１３の中央に配置されている。図５Ａでは、認証カード１０の入力部１３が描かれているが、内部配線は省略されている。図５Ａでは、不正解検知素子１８も配置されている。ダミー素子と不正解検知素子１８の両方を認証カード１０に配置する場合、ユーザがダミー素子に触れても、制御部１４により不正解と判断される。また、ユーザがダミー素子に触れることで、制御部１４により不正解と判断された後も入力はできるようにし、ユーザが不正解検知素子に触れてしまうことで、制御部１４により不正解と判断された後に入力は受け付けない（制御部を起動させない）ようにしてもよい。このように、制御部１４により不正解と判断された後の処理を、ユーザがダミー素子に触れた場合と、ユーザが不正解検知素子に触れた場合とで、使い分けることもできる。 Further, the eight spin thermoelectric conversion elements 11 of FIG. 1 are arranged so as to draw a substantially C-shaped pattern, which is a correct pattern. However, as shown in FIG. 5A, a dummy spin thermoelectric conversion element 110 (hereinafter referred to as a dummy element) is used. May be abbreviated as ".") on the authentication card 10. Note that, in FIG. 5A, the dummy element is arranged in the center of the input section 13. In FIG. 5A, the input unit 13 of the authentication card 10 is illustrated, but the internal wiring is omitted. In FIG. 5A, the incorrect answer detection element 18 is also arranged. When both the dummy element and the incorrect answer detection element 18 are arranged on the authentication card 10, even if the user touches the dummy element, the control unit 14 determines that the incorrect answer. In addition, when the user touches the dummy element, input can be made even after the control unit 14 determines that the answer is incorrect, and when the user touches the incorrect answer detection element, the control unit 14 determines that the answer is incorrect. The input may not be accepted (the control unit is not activated) after the completion. In this way, the process after the control unit 14 determines that the incorrect answer is made can be used differently depending on whether the user touches the dummy element or when the user touches the incorrect answer detection element.
　スピン熱電変換素子１１の磁性層として強磁性体を用いた場合に、例えば認証カード１０に鉄粉を撒くと、スピン熱電変換素子１１を目隠し膜２５で覆っていても、鉄粉が強磁性体に引き付けられて、正解パターン４２が鉄粉によって現れてしまう可能性がある。しかし、ダミー素子を認証カード１０に配置しておくと、ダミー素子にも鉄粉が付着するので、正解パターン４２が分かりにくくなる。この役目だけでよければ、ユーザが触れても正解、不正解には影響がないダミー素子（冗長素子）を認証カード１０に配置してもよい。 When a ferromagnetic material is used as the magnetic layer of the spin thermoelectric conversion element 11, for example, if iron powder is sprinkled on the authentication card 10, even if the spin thermoelectric conversion element 11 is covered with the blindfold film 25, the iron powder is a ferromagnetic material. There is a possibility that the correct answer pattern 42 may be exposed by the iron powder. However, when the dummy element is arranged on the authentication card 10, the iron powder adheres to the dummy element, which makes it difficult to understand the correct answer pattern 42. If only this role is required, a dummy element (redundant element) that does not affect correct or incorrect answers even if the user touches it may be arranged on the authentication card 10.
　ダミー素子１１０も他の素子と同様に内部配線１９によって制御部１４に接続しておくとよい。これにより、ユーザがダミー素子１１０に触れると発電するので、その電力を制御部１４、発信部１５の駆動に使うことができる。 The dummy element 110 may be connected to the control unit 14 by the internal wiring 19 like other elements. As a result, when the user touches the dummy element 110, electric power is generated, and the electric power can be used to drive the control unit 14 and the transmission unit 15.
　また、図５Ａでは、素子の配置は、図５Ａの紙面にて左右非対称であった。一方、図５Ｂのように素子を配置することによって、入力部１３の中心を通る線に対して線対象にしたり、入力部の中心点に対して点対称に配置したりすることができる。これにより、さらに正解パターンが分かりにくくすることができる。また、ダミー素子１１０、スピン熱電変換素子１１、および不正解検知素子１８の個々の位置に対応する認証カード１０の樹脂表面に枠を描くと、指でなぞる位置が明確になる。これにより、ユーザが指の移動を誤って不正解パターンになる可能性を低くすることができる。また、枠を描くのではなく、ダミー素子１１０、スピン熱電変換素子１１、および不正解検知素子１８が配置された領域全体を他の箇所とは違う色に彩色してもよい。さらに、前述の枠を描くことと、前述の違う色に彩色することとを組み合わせてもよい。 Also, in FIG. 5A, the arrangement of the elements was left-right asymmetric on the plane of FIG. 5A. On the other hand, by arranging the elements as shown in FIG. 5B, it is possible to make them line symmetrical with respect to a line passing through the center of the input section 13 or to be arranged symmetrically with respect to the center point of the input section. As a result, the correct answer pattern can be made more difficult to understand. When a frame is drawn on the resin surface of the authentication card 10 corresponding to the individual positions of the dummy element 110, the spin thermoelectric conversion element 11, and the incorrect answer detection element 18, the position traced by the finger becomes clear. As a result, it is possible to reduce the possibility that the user will mistakenly move the finger to form an incorrect answer pattern. Instead of drawing a frame, the entire area in which the dummy element 110, the spin thermoelectric conversion element 11, and the incorrect answer detection element 18 are arranged may be colored in a color different from the other areas. Furthermore, the drawing of the frame described above and the coloring of the different color described above may be combined.
　（効果の説明）
　以上述べたように、本実施形態では、不正解検知素子を配置しているので、偶然、正解パターンをなぞっても、不正解検知素子に触れれば不正解になり、セキュリティが向上する。 (Explanation of effect)
As described above, in the present embodiment, since the incorrect answer detection element is arranged, even if the correct answer pattern is accidentally traced, if the incorrect answer detection element is touched, it becomes an incorrect answer, and the security is improved.
　（第２の実施形態）
　図６は、本発明の第２の実施形態の認証システムを説明する図である。この認証システムは、認証用装置１００と認証装置２５０を備えている。図６では、認証用装置１００の個々の第１のスピン熱電変換素子、不正解検知用素子は入力部２１３としてまとめて描かれている。また、図６では、入力部２１３と制御部２１４とを接続する内部配線は、１本の線でまとめて描かれている。 (Second embodiment)
FIG. 6 is a diagram illustrating an authentication system according to the second embodiment of this invention. This authentication system includes an authentication device 100 and an authentication device 250. In FIG. 6, the individual first spin thermoelectric conversion elements and incorrect answer detection elements of the authentication device 100 are collectively shown as the input unit 213. Further, in FIG. 6, the internal wirings connecting the input unit 213 and the control unit 214 are collectively drawn by one line.
　第１の実施形態では、制御部１４は、正解パターンを記憶していて、正解パターンと第１のパターンとを比較して、正解または不正解を判定して、ユーザを認証する。しかし、本実施形態の制御部２１４は、前述の比較および判定をせず、発信部２１５に第１のパターンを出力する。発信部２１５は、アンテナ２１６を介して、施設または電子装置の認証装置２５０の受信部２０１に認証情報を発信する。そして、認証装置２５０の認証部２０２は、認証用装置１００で第１のパターンを入力したユーザを認証するかどうか判定する。 In the first embodiment, the control unit 14 stores the correct answer pattern, compares the correct answer pattern with the first pattern, determines the correct answer or the incorrect answer, and authenticates the user. However, the control unit 214 of the present embodiment outputs the first pattern to the transmission unit 215 without performing the above comparison and determination. The transmitting unit 215 transmits the authentication information to the receiving unit 201 of the authentication device 250 of the facility or the electronic device via the antenna 216. Then, the authentication unit 202 of the authentication device 250 determines whether or not the authentication device 100 authenticates the user who has input the first pattern.
　本実施形態では、第１の実施形態と同じく、セキュリティが向上し、しかも、第１のスピン熱電変換素子で駆動する制御部２１４での処理を軽くすることができ、制御部２１４の回路規模を小さくすることができる。 In the present embodiment, as in the first embodiment, security is improved, and furthermore, the processing in the control unit 214 driven by the first spin thermoelectric conversion element can be lightened, and the circuit scale of the control unit 214 is reduced. Can be made smaller.
　（第３の実施形態）
　図７、８、９は、本発明の第３の実施形態の認証装置を説明する図である。第１、第２の実施形態の認証カード１０では、スピン熱電変換素子１１は複数配置されていた。一方、本実施形態の認証カード５０では、例えば、アルファベットの“Ｍ”字形状のスピン熱電変換素子５１は１つ配置されている。スピン熱電変換素子５１は、第２の熱電変換素子の一例に対応する。ユーザが指で正しくＭ字をなぞれば、正解パターン５２になる。このスピン熱電変換素子５１は、図３のスピン熱電変換素子をＭ字形状にしたものである。図７を参照して、Ｍ字の縦棒の下端に電極５１１、５１２がそれぞれ設けられている。電極５１１、５１２のうち、一方の電極を制御部５４と接続し、他方の電極は接地する。Ｍ字形状のスピン熱電変換素子５１は、例えば、図３の金属膜３３と磁性絶縁体層３２を積層して、リソグラフィ工程で両方ともＭ字に形成してもよいし、Ｍ字よりも大きな矩形の強磁性体層上にＭ字の起電体膜を形成してもよい。Ｍ字の起電体の形成には、リソグラフィ工程を使うか、起電体膜のシートをＭ字に切り取るか、あるいは起電体膜を含むペースト材料を含ませたペンでＭ字を描くか、などの方法を用いることができる。 (Third Embodiment)
7, 8 and 9 are diagrams illustrating an authentication device according to a third embodiment of the present invention. In the authentication card 10 of the first and second embodiments, a plurality of spin thermoelectric conversion elements 11 are arranged. On the other hand, in the authentication card 50 according to the present embodiment, for example, one spin thermoelectric conversion element 51 having an alphabet “M” shape is arranged. The spin thermoelectric conversion element 51 corresponds to an example of the second thermoelectric conversion element. If the user traces the M-shape correctly with his/her finger, the correct answer pattern 52 is obtained. The spin thermoelectric conversion element 51 is an M-shaped spin thermoelectric conversion element shown in FIG. Referring to FIG. 7, electrodes 511 and 512 are provided at the lower ends of the M-shaped vertical bars, respectively. One of the electrodes 511 and 512 is connected to the control unit 54, and the other electrode is grounded. The M-shaped spin thermoelectric conversion element 51 may be formed by stacking the metal film 33 and the magnetic insulator layer 32 shown in FIG. An M-shaped electromotive film may be formed on the rectangular ferromagnetic layer. For forming the M-shaped electromotive body, a lithography process is used, a sheet of the electromotive film is cut into M-shaped, or the M-shaped is drawn with a pen containing a paste material containing the electromotive film. , Etc. can be used.
　図７を参照して、本実施形態では、ユーザがスピン熱電変換素子５１に触れることで生成された電力（第１の電力）と、ユーザが正解パターン全体に触れた場合に生成される電力（第２の電力）とを、制御部５４が比較する。制御部５４による比較の結果、第１の電力と第２の電力との差が許容範囲内であった場合、及び、第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に、ユーザが認証される。 With reference to FIG. 7, in the present embodiment, the power (first power) generated by the user touching the spin thermoelectric conversion element 51 and the power generated when the user touches the entire correct pattern ( The second power) is compared by the control unit 54. As a result of the comparison by the control unit 54, if the difference between the first power and the second power is within the allowable range, and if at least one of the cases where the generation of the first power is not interrupted is satisfied, Then, the user is authenticated.
　より具体的には、本実施形態では次の（１）～（３）のいずれかの処理によって、正解または不正解の判定が行われる。
（１）ユーザが誤ったパターンで認証カード５１の表面をなぞると、正解パターンどおりになぞった場合よりも、生成される電力が小さくなる（熱電素子がない場所をなぞっても発電しない）。そこで、制御部５４は、電力比較部５４１で生成電力を比較して、この生成電力の差に基づいて正解または不正解を判定する。
（２）制御部５４は、発電が途切れる時間があったら不正解、途切れなかったら正解と判定する。
（３）（１）と（２）を組み合わせる。 More specifically, in this embodiment, a correct answer or an incorrect answer is determined by any of the following processes (1) to (3).
(1) When the user traces the surface of the authentication card 51 with an incorrect pattern, the generated electric power becomes smaller than when the trace is performed according to the correct pattern (the electric power is not generated even by tracing the place where there is no thermoelectric element). Therefore, the control unit 54 compares the generated powers in the power comparison unit 541 and determines the correct answer or the incorrect answer based on the difference between the generated powers.
(2) The control unit 54 determines an incorrect answer if there is a time when power generation is interrupted, and a correct answer if it is not interrupted.
(3) Combine (1) and (2).
　図７を参照して、（１）では、正解がアルファベットの大文字の“Ｍ”であるとき、ユーザが誤ったパターン（不正解パターン５３）である略“Ｃ”（正確にはカタカナの“コ”の字を左右逆にしたもの）となぞると、指はＭの一部しか触れることがない。そのため、スピン熱電変換素子５１が生成する電力は、Ｍとなぞる場合に比べて小さくなる。不正解パターン５３を指でなぞった際に、スピン熱電変換素子５１に指が触れる領域は、図７に斜線で示した三か所の領域５９である。この場合（不正解パターン５３を指でなぞった場合）、正解パターン５２を指で正しくなぞった場合に比べて、生成できる電力は約１／４になる。制御部５４は、生成電力を検出して判定する。制御部５４は、正解の生成電力値を予め記憶していて、電力比較部５４１を有する。電力比較部５４１は、正確の生成電力値と、ユーザが描いたパターンで生成された電力値とを比較する。正解の生成電力値との差がどこまで許容できるかの許容範囲が制御部５４に設定されている。制御部５４は、ユーザが描いたパターンで生成された電力値と正解の生成電力値との差が許容範囲内であれば、正解と判定する。例えば、ユーザが描いたパターンで生成された電力値が正解の生成電力値の３／４以上であれば、許容範囲内であるなどと、制御部５４に設定される。発信部５５とアンテナ５６は、第１の実施形態と同じ機能を有するので、これらの説明は省略する。 Referring to FIG. 7, in (1), when the correct answer is the capital letter “M” of the alphabet, the user has an incorrect pattern (incorrect answer pattern 53), which is substantially “C” (correctly, katakana “U”). When you trace it with "(the character is reversed)", the finger touches only part of M. Therefore, the electric power generated by the spin thermoelectric conversion element 51 becomes smaller than that in the case of tracing with M. The areas where the finger touches the spin thermoelectric conversion element 51 when the incorrect solution pattern 53 is traced with a finger are three areas 59 shown by hatching in FIG. 7. In this case (when the incorrect answer pattern 53 is traced with a finger), the power that can be generated is about 1/4 as compared with when the correct answer pattern 52 is correctly traced with a finger. The control unit 54 detects and determines the generated power. The control unit 54 stores a correct generated power value in advance and includes a power comparing unit 541. The power comparison unit 541 compares the accurate generated power value with the power value generated in the pattern drawn by the user. An allowable range of how much the difference with the correct generated power value can be allowed is set in the control unit 54. If the difference between the power value generated in the pattern drawn by the user and the correct generated power value is within the allowable range, the control unit 54 determines that the answer is correct. For example, if the power value generated by the pattern drawn by the user is 3/4 or more of the correct generated power value, it is set in the control unit 54 as being within the allowable range. Since the transmitter 55 and the antenna 56 have the same functions as those in the first embodiment, their description will be omitted.
　（２）では、正解が大文字の“Ｍ”であるとき、ユーザが“Ｃ”と指でなぞると、図７から明らかなように、スピン熱電変換素子５１は途切れ途切れに電力を生成する。図８に示すように、制御部５４’は電力生成が途切れる時間があるかどうかを検出する途切れ検知部５４２を備えており、途切れ検知部５４２を用いて正解または不正解を判定する。 In (2), when the correct answer is the capital letter “M”, when the user traces the finger with “C”, as shown in FIG. 7, the spin thermoelectric conversion element 51 generates power intermittently. As illustrated in FIG. 8, the control unit 54 ′ includes a discontinuity detection unit 542 that detects whether or not there is a time when the power generation is discontinued, and the discontinuity detection unit 542 is used to determine a correct answer or an incorrect answer.
　なお、正解パターンが漢字の“田”や、アルファベットの“Ａ”のように一筆書きできないパターンの場合、ユーザがなぞる時に指が認証カード５０から離れる時間が生じるため、発生する電力が途切れ途切れになる。そのため、（２）の認証手法を使う場合、正解パターンは“Ｍ”、“Ｃ”、“Ｓ”、“２”、“３”のような一筆書きできるものが望ましい。また、仮に一筆書きできるパターンであっても、ユーザの指が認証カード５０から一瞬離れることはあるので、例えば１回離れるのは許容して使い勝手を良くするとよい。指が離れることを許容する回数は、正解パターンの形状との兼ね合い等から決めると良い。 If the correct pattern is a pattern that cannot be written with a single stroke, such as the Chinese character “Ta” or the alphabet “A”, the user's finger leaves the authentication card 50 for some time, and the generated power is interrupted. Become. Therefore, when the authentication method (2) is used, it is desirable that the correct answer pattern be one-stroke writing such as “M”, “C”, “S”, “2”, and “3”. Even if the pattern can be written with a single stroke, the user's finger may be separated from the authentication card 50 for a moment, so that it is preferable to allow it to be separated once, for example, to improve the usability. The number of times the finger is allowed to be released may be determined in consideration of the shape of the correct answer pattern.
　（３）は、例えば、（１）と（２）の両方を満足する処理であって、つまり正解パターンでなぞり、しかも発電が途切れる時間がなかった場合を、正解とするものである。ユーザの認証を厳しくしたい場合に有効である。 (3) is, for example, a process that satisfies both (1) and (2), that is, when the correct answer pattern is traced and there is no time for power generation to be interrupted, the correct answer is given. This is effective when you want to tighten user authentication.
　本実施形態において、図９に示すように、第１の実施形態と同じ機能を持つ不正解検知素子５８は、認証カード５０に配置されている。不正解検知素子５８の動作および役割は、第１の実施形態と同様である。また、第１の実施形態と同様に、枠線、枠、ガイドマークをさらに設けても良い。 In the present embodiment, as shown in FIG. 9, the incorrect answer detection element 58 having the same function as that of the first embodiment is arranged on the authentication card 50. The operation and role of the incorrect answer detection element 58 are similar to those in the first embodiment. Further, like the first embodiment, a frame line, a frame, and a guide mark may be further provided.
　本実施形態では、生成電力の差または途切れる時間の有無で、正解または不正解を判定するので、第１および第２の実施形態と同様に、セキュリティが向上する。 In the present embodiment, the correct answer or the incorrect answer is determined based on the difference in generated power or the presence or absence of the break time, so that the security is improved as in the first and second embodiments.
　（第４の実施形態）
　図１０は、本発明の第４の実施形態を説明する図である。この認証システムは、認証用装置３００と認証装置３５０を備えている。認証用装置３００の複数の第１のスピン熱電変換素子、不正解検知用素子は、まとめて入力部３１３として描かれている。また、図１０では、入力部３１３と制御部３１４とを接続する内部配線は、１本の線でまとめて描かれている。 (Fourth Embodiment)
FIG. 10 is a diagram for explaining the fourth embodiment of the present invention. This authentication system includes an authentication device 300 and an authentication device 350. The plurality of first spin thermoelectric conversion elements and incorrect answer detection elements of the authentication device 300 are collectively shown as the input unit 313. Further, in FIG. 10, the internal wirings connecting the input unit 313 and the control unit 314 are collectively drawn by one line.
　第３の実施形態では、制御部２１４は、上記（１）、（２）、（３）のいずれかでユーザを認証する。しかし、本実施形態の制御部３１４は、前述の比較および判定をせず、ユーザが例えばアルファベットの“Ｍ”字形状のスピン熱電変換素子５１に触れて生成された電力の情報、または、この電力の生成が途切れる時間の有無の情報の少なくとも一方を、発信部３１５およびアンテナ３１６を介して、認証装置３５０の受信部３０１に送る。認証装置３５０は、ユーザがスピン熱電変換素子５１に触れて生成された電力の情報、または、この電力の生成が途切れる時間の有無の情報の少なくとも一方を受ける。そして、認証装置３５０の認証部３０２は、上記（１）、（２）、（３）のいずれかの処理を行って、ユーザを認証する。 In the third embodiment, the control unit 214 authenticates the user by any of the above (1), (2), and (3). However, the control unit 314 of the present embodiment does not perform the above-mentioned comparison and determination, and information of power generated by the user touching the spin thermoelectric conversion element 51 having, for example, the letter “M” in the alphabet, or this power. Is transmitted to the receiving unit 301 of the authentication device 350 via the transmitting unit 315 and the antenna 316. The authentication device 350 receives at least one of information on the power generated by the user touching the spin thermoelectric conversion element 51 and information on the presence/absence of a time when the generation of this power is interrupted. Then, the authentication unit 302 of the authentication device 350 performs any one of the processes (1), (2), and (3) to authenticate the user.
　本実施形態では、第１～第３の実施形態と同じく、セキュリティが向上する。さらに、本実施形態では、制御部３１４での処理を軽くでき、制御部３１４の回路規模を小さくできる。 In this embodiment, the security is improved as in the first to third embodiments. Furthermore, in the present embodiment, the processing in the control unit 314 can be lightened, and the circuit scale of the control unit 314 can be reduced.
　（第５の実施形態）
　スピン熱電変換素子の磁性層として強磁性体を用いる場合に、例えば認証カードに鉄粉を撒くと、スピン熱電変換素子を目隠し膜で覆っていても、鉄粉が強磁性体に引き付けられて、正解パターンが鉄粉によって現れてしまう可能性がある。そこで、本実施形態では、強磁性体に代えて、スピン熱電効果を有する反強磁性体材料（Mn3Snなど既知のものでよい）を用いる。反強磁性体材料は、自発磁化を持たないため、認証カードの秘匿性を高めることができる。 (Fifth Embodiment)
When using a ferromagnetic material as the magnetic layer of the spin thermoelectric conversion element, for example, if iron powder is sprinkled on the authentication card, the iron powder is attracted to the ferromagnetic material even if the spin thermoelectric conversion element is covered with a blindfold film. The correct pattern may appear due to iron powder. Therefore, in this embodiment, an antiferromagnetic material having a spin thermoelectric effect (a known material such as Mn 3 Sn may be used) instead of the ferromagnetic material. Since the antiferromagnetic material has no spontaneous magnetization, the confidentiality of the authentication card can be enhanced.
　本実施形態では、第１～第４の実施形態よりも更にセキュリティが向上する。 In this embodiment, security is further improved as compared with the first to fourth embodiments.
　（第６の実施形態）
　熱電変換素子は、通常であれば回路を動作させるのに十分な電力を発生できても、環境からの充電が不足することがある。すなわち、熱電変換素子が配置される環境によって、充電が不足することがある。例えば、酷暑日など気温が非常に高くなって、熱電変換素子に加わる温度差が小さくなり、得られる電力が不十分になる場合がある。気温が極端に高く体温と同等になったり、カードが高温の場所に置かれたりした場合などは、温度差が発生しない場合もありうる。 (Sixth Embodiment)
Although the thermoelectric conversion element can usually generate sufficient electric power to operate the circuit, it may be insufficiently charged from the environment. That is, charging may be insufficient depending on the environment in which the thermoelectric conversion element is arranged. For example, there are cases where the temperature becomes extremely high such as on a hot day, the temperature difference applied to the thermoelectric conversion element becomes small, and the obtained electric power becomes insufficient. When the temperature is extremely high and becomes equal to the body temperature, or when the card is placed in a high temperature place, the temperature difference may not occur.
　そこで、本実施形態では、スピン熱電変換素子８１および不正解検知素子８８の上に熱生成膜８３を形成して補う。図１１は、本発明の第６の実施形態を説明する断面図である。図１１は、図１のＡ－Ａ’切断面で切断した概略断面図に相当する。図１１を参照して、樹脂製のカード基板２１の内部にスピン熱電変換素子８１および不正解検知素子８８が埋め込まれている。入力部を構成するスピン熱電変換素子８１および不正解検知素子８８の上部に、熱生成膜８３が設けられている。この熱生成膜８３の材料には、摩擦係数の高い材料が用いられる。なお、図１１では、制御部、発信部などを省略している。熱生成膜８３の材料には、たとえば、ステンレスや、アルミなどを用いることができる。同じように認証カードの表面を指でなぞった際に、熱生成膜８３が設けられている場合は、熱生成膜が設けられていない場合と比較して、熱電素子（スピン熱電変換素子８１および不正解検知素子８８）の表面が高い温度になり、生成電力を大きくすることができる。 Therefore, in the present embodiment, the heat generation film 83 is formed and supplemented on the spin thermoelectric conversion element 81 and the incorrect solution detection element 88. FIG. 11: is sectional drawing explaining the 6th Embodiment of this invention. FIG. 11 corresponds to a schematic cross-sectional view taken along the line A-A′ in FIG. 1. Referring to FIG. 11, a spin thermoelectric conversion element 81 and an incorrect answer detection element 88 are embedded in a resin card substrate 21. A heat generation film 83 is provided on the spin thermoelectric conversion element 81 and the incorrect answer detection element 88 that form the input section. A material having a high friction coefficient is used as the material of the heat generating film 83. In addition, in FIG. 11, a control unit, a transmission unit, and the like are omitted. As the material of the heat generating film 83, for example, stainless steel, aluminum or the like can be used. Similarly, when the heat generating film 83 is provided when the surface of the authentication card is traced with a finger, compared with the case where the heat generating film is not provided, the thermoelectric element (spin thermoelectric conversion element 81 and The temperature of the surface of the incorrect answer detection element 88) becomes high, and the generated power can be increased.
　図１２は、本発明の第６の実施形態を説明する断面図である。図１２に示されるように、熱生成膜８３が金属の場合、熱電変換素子の間の短絡を防ぐために、スピン熱電変換素子１１および熱生成膜８３の間に、絶縁層８５を設けることができる。同様に、不正解検知素子８８および熱生成膜８３の間に、絶縁層８５を設けることができる。すなわち、入力部を構成するスピン熱電変換素子８１および不正解検知素子８８の上に、薄い絶縁層８５を介して、熱生成膜８３が設けられている。絶縁層８５の材料には、たとえば、窒化珪素、窒化硼素、アルミナ、窒化アルミ等の熱伝導性の良い材料を用いるとよい。熱伝導性が良い材料を絶縁層８５に使うことで、絶縁層８５の内部に、できる限り温度勾配が付かないようにすることができる。熱生成膜８３が不透明であれば、図２で述べた目隠し膜の役割を兼ねることができる。なお、摩擦係数が高くない材料でも、表面を粗面にすれば、実効的に摩擦係数を高めることができる。 FIG. 12 is a sectional view illustrating a sixth embodiment of the present invention. As shown in FIG. 12, when the heat generating film 83 is a metal, an insulating layer 85 can be provided between the spin thermoelectric converting element 11 and the heat generating film 83 in order to prevent a short circuit between the thermoelectric converting elements. .. Similarly, an insulating layer 85 can be provided between the incorrect answer detection element 88 and the heat generation film 83. That is, the heat generation film 83 is provided on the spin thermoelectric conversion element 81 and the incorrect answer detection element 88 which form the input section, with the thin insulating layer 85 interposed therebetween. As a material for the insulating layer 85, for example, a material having good thermal conductivity such as silicon nitride, boron nitride, alumina, or aluminum nitride may be used. By using a material having good thermal conductivity for the insulating layer 85, it is possible to prevent the temperature gradient from being applied to the inside of the insulating layer 85 as much as possible. If the heat generating film 83 is opaque, it can also serve as the blinding film described in FIG. Even with a material having a low coefficient of friction, the coefficient of friction can be effectively increased by roughening the surface.
　本実施形態では、上述の実施形態と同様に、セキュリティが向上する。また、環境からの充電が不足するような場合でも、十分な電力を得ることができる。すなわち、熱電変換素子が配置される環境によって、充電が不足する場合でも、十分な電力を得ることができる。 In this embodiment, security is improved as in the above-described embodiments. In addition, sufficient power can be obtained even when charging from the environment is insufficient. That is, sufficient power can be obtained even when charging is insufficient depending on the environment in which the thermoelectric conversion element is arranged.
　（第７の実施形態）
　図１３は、本実施形態の認証カード４００を説明するブロック図である。前述の実施形態でも述べたが、環境によっては熱電変換素子が発生できる電力が小さくなり、回路を動作させるには電力が足りない場合がある。そこで、本実施形態の認証カード４００では、回路駆動用の電力を生成するために、入力部の熱電変換素子とは別に、当該熱電変換素子よりも面積の大きな駆動用熱電変換素子９１と、蓄電部９２とが設けられている。駆動用熱電変換素子９１は、第３の熱電変換素子の一例に対応する。図１３では、複数の第１のスピン熱電変換素子および不正解検知用素子は、まとめて入力部９３として描かれている。また、入力部９３と制御部９４とを接続する内部配線は、１本の線でまとめて描かれている。認証カード４００が厚くならないように、駆動用熱電変換素子９１と蓄電部９２は、認証カード４００の内部の他の回路と重ならない位置に配置している。蓄電部９２には、例えばリチウムイオン二次電池を用いることができる。 (Seventh embodiment)
FIG. 13 is a block diagram illustrating the authentication card 400 of this embodiment. As described in the above embodiment, the electric power that can be generated by the thermoelectric conversion element becomes small depending on the environment, and the electric power may not be sufficient to operate the circuit. Therefore, in the authentication card 400 of the present embodiment, in order to generate electric power for driving the circuit, in addition to the thermoelectric conversion element of the input section, a driving thermoelectric conversion element 91 having a larger area than the thermoelectric conversion element, and a storage unit. And a portion 92 are provided. The driving thermoelectric conversion element 91 corresponds to an example of the third thermoelectric conversion element. In FIG. 13, the plurality of first spin thermoelectric conversion elements and incorrect answer detection elements are collectively shown as the input unit 93. Further, the internal wiring connecting the input unit 93 and the control unit 94 is collectively drawn by one line. In order to prevent the authentication card 400 from becoming thick, the driving thermoelectric conversion element 91 and the power storage unit 92 are arranged at positions that do not overlap with other circuits inside the authentication card 400. For the power storage unit 92, for example, a lithium ion secondary battery can be used.
　駆動用熱電変換素子９１は、図３で示した構成と同様に、起電力を取り出す電極３４、３５に相当する電極を備えている。また、駆動用熱電変換素子９１は、蓄電部９２の２つの端子に接続されている。なお、図１３では、駆動用熱電変換素子９１および蓄電部９２の間の接続は、１本の線で表示している。制御部９４は、入力部９３の素子（図１のスピン熱電変換素子１１、不正解検知用スピン熱電変換素子１８に相当する素子であって、図２３にて不図示。）と、蓄電部９２と、発信部９５に接続されている。蓄電部９２は、駆動用熱電変換素子９１と、制御部９４と、発信部９５に接続されている。制御部９４および発信部９５は、蓄電部９２からも給電する。また、駆動用熱電変換素子９１は、図３で説明した原理と同様の原理によって、素子表面と素子裏面の温度差で、発電する。それに加えて、ユーザが駆動用熱電変換素子９１の表面を指で触れた場合、駆動用熱電変換素子９１は、指から伝わる熱でも発電する。 The driving thermoelectric conversion element 91 includes electrodes corresponding to the electrodes 34 and 35 for extracting electromotive force, similarly to the configuration shown in FIG. The driving thermoelectric conversion element 91 is connected to two terminals of the power storage unit 92. Note that in FIG. 13, the connection between the driving thermoelectric conversion element 91 and the power storage unit 92 is indicated by one line. The control unit 94 includes elements of the input unit 93 (elements corresponding to the spin thermoelectric conversion element 11 and the incorrect-solution detection spin thermoelectric conversion element 18 in FIG. 1 and not shown in FIG. 23), and the power storage unit 92. And is connected to the transmitter 95. The power storage unit 92 is connected to the driving thermoelectric conversion element 91, the control unit 94, and the transmission unit 95. The control unit 94 and the transmission unit 95 also supply power from the power storage unit 92. Further, the driving thermoelectric conversion element 91 generates electric power by the temperature difference between the element front surface and the element back surface, according to the same principle as that described in FIG. In addition to this, when the user touches the surface of the driving thermoelectric conversion element 91 with a finger, the driving thermoelectric conversion element 91 also generates heat by the heat transmitted from the finger.
　本実施形態では、上述の実施形態と同様にセキュリティが向上する。さらに、入力部９３の熱電変換素子よりも面積の大きい駆動用熱電変換素子９１を設けたので、入力部９３から得る電力では不十分な場合でも、入力部９３の熱電変換素子よりも大きな電力を生成できる。このように、駆動用熱電変換素子９１を設けた結果、より大きな電力で制御部９４、発信部９５、アンテナ９６などを動作させることができる。 In this embodiment, security is improved as in the above-described embodiments. Further, since the driving thermoelectric conversion element 91 having a larger area than the thermoelectric conversion element of the input section 93 is provided, even if the electric power obtained from the input section 93 is insufficient, a larger electric power than the thermoelectric conversion element of the input section 93 is supplied. Can be generated. As described above, as a result of providing the driving thermoelectric conversion element 91, it is possible to operate the control unit 94, the transmission unit 95, the antenna 96, and the like with larger power.
　なお、第２、第４の実施形態の認証用装置に、駆動用熱電変換素子９１と蓄電部９２をさらに設けても良い。 The driving thermoelectric conversion element 91 and the power storage unit 92 may be further provided in the authentication devices of the second and fourth embodiments.
　また、入力部のそれぞれの素子（スピン熱電変換素子や、不正解検知素子）に蓄電部を接続し、その蓄電部から制御部に電力を出力してもよい。 Alternatively, a power storage unit may be connected to each element of the input unit (spin thermoelectric conversion element or incorrect answer detection element), and power may be output from the power storage unit to the control unit.
　本実施形態では、上述の実施形態と同様に、セキュリティが向上する。また、駆動用熱電変換素子と蓄電部が設けられているので、電力が不足する可能性が低くなり、認証装置および認証用装置を安定して動作させることができる。 In this embodiment, security is improved as in the above-described embodiments. Further, since the driving thermoelectric conversion element and the power storage unit are provided, the possibility that the electric power will be insufficient is reduced, and the authentication device and the authentication device can be stably operated.
　（第８の実施形態）
　図１４は、本発明の第８の実施形態を説明する図である。本実施形態の認証装置１２１０は、複数の第１の熱電変換素子１２１１と、制御部１２１４とを備えている。複数の第１の熱電変換素子１２１１の他に、不正解検知用熱電変換素子１２１８が設けられている。制御部１２１４は、複数の第１の熱電変換素子１２１１および不正解検知用熱電変換素子１２１８に接続されている。制御部１２１４は、複数の第１の熱電変換素子１２１１のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターン１２４３と、正解パターン１２１２とを比較する。そして、制御部１２１４は、比較の結果、第１のパターンが正解パターンに一致した場合に、ユーザを認証する。一方、制御部１２１４は、比較の結果、第１のパターンが正解パターンに一致しない場合に、ユーザを認証しない。さらに、制御部１２１４は、不正解検知用熱電変換素子にユーザの指が触れると、ユーザを認証しない。 (Eighth Embodiment)
FIG. 14 is a diagram for explaining the eighth embodiment of the present invention. The authentication device 1210 of this embodiment includes a plurality of first thermoelectric conversion elements 1211 and a control unit 1214. In addition to the plurality of first thermoelectric conversion elements 1211, an incorrect solution detection thermoelectric conversion element 1218 is provided. The control unit 1214 is connected to the plurality of first thermoelectric conversion elements 1211 and incorrect thermoelectric conversion conversion element 1218. The control unit 1214 compares the correct pattern 1212 with the first pattern 1243 that occurs depending on which of the plurality of first thermoelectric conversion elements 1211 the user touches to generate electric power. Then, as a result of the comparison, the control unit 1214 authenticates the user when the first pattern matches the correct answer pattern. On the other hand, as a result of the comparison, the control unit 1214 does not authenticate the user if the first pattern does not match the correct pattern. Further, the control unit 1214 does not authenticate the user when the user's finger touches the incorrect answer detection thermoelectric conversion element.
　このように、本実施形態では、不正解検知素子を配置しているので、偶然に正解パターンをなぞっても、不正解検知素子に指が触れれば不正解になり、セキュリティが向上する。 In this way, in this embodiment, since the incorrect answer detection element is arranged, even if the correct answer pattern is accidentally traced, if the finger touches the incorrect answer detection element, it becomes an incorrect answer, and the security is improved.
　（第９の実施形態）
　図１５は、本発明の第９の実施形態を示す図である。本実施形態の認証システムは、認証用装置１３００と認証装置２５００を備えている。認証用装置１３００は、複数の第１の熱電変換素子１３１１と、制御部１３１４を有している。また、認証用装置１３００には、複数の第１の熱電変換素子１３１１の他に、不正解検知用熱電変換素子１３１８が設けられている。制御部１３１４は、複数の第１の熱電変換素子１３１１のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターン１３４３と、不正解検知用熱電変換素子１３１８に触れたか否かの情報を、認証装置２５００に送る。認証装置２５００は、第１のパターン１３４３と正解パターン１３１２とを比較する。そして、認証装置２５００は、比較の結果、第１のパターンが正解パターンに一致した場合にユーザを認証する。一方、認証装置２５００は、比較の結果、第１のパターンが正解パターンに一致しない場合にユーザを認証しない。また、認証装置２５００は、情報が不正解検知用熱電変換素子１３１８にユーザの指が触れると、ユーザを認証しない。 (Ninth Embodiment)
FIG. 15 is a diagram showing a ninth embodiment of the present invention. The authentication system of this embodiment includes an authentication device 1300 and an authentication device 2500. The authentication device 1300 has a plurality of first thermoelectric conversion elements 1311 and a control unit 1314. Further, the authentication device 1300 is provided with an incorrect answer detection thermoelectric conversion element 1318 in addition to the plurality of first thermoelectric conversion elements 1311. The control unit 1314 determines whether or not the first pattern 1343, which occurs depending on which of the plurality of first thermoelectric conversion elements 1311 the user touches to generate electric power, and the incorrect-electricity detection thermoelectric conversion element 1318. That information is sent to the authentication device 2500. The authentication device 2500 compares the first pattern 1343 with the correct answer pattern 1312. Then, the authentication device 2500 authenticates the user when the first pattern matches the correct pattern as a result of the comparison. On the other hand, as a result of the comparison, the authentication device 2500 does not authenticate the user when the first pattern does not match the correct pattern. The authentication device 2500 does not authenticate the user when the user's finger touches the incorrect solution detection thermoelectric conversion element 1318.
　本実施形態では、セキュリティが向上する。その上、制御部１３１４での処理を軽くし、または制御部の回路規模を小さくすることができる。
　（第１０の実施形態）
　図１６は、本発明の第１０の実施形態を示す図である。本実施形態の認証装置１４００は、正解パターン形状を持つ第２の熱電変換素子１４１１と、制御部１４１４とを備えている。制御部１４１４は、ユーザが第２の熱電変換素子１４１１に触れることで（図１６の１４５３）生成される第１の電力と、ユーザが正解パターン全体に触れた場合（図１６の１４５２）に生成される第２の電力とを比較する。また、制御部１４１４は、第１の電力と第２の電力との差を算出する。制御部１４１４による比較の結果、第１の電力と第２の電力との差が許容範囲内であった場合、および、第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に、ユーザが認証される。なお、図１６にて、不正解検知素子を省略している。不正解検知素子の機能については、第１の実施形態で説明通りである。また、不正解検知素子は図９に示されるように配置される。 In this embodiment, security is improved. In addition, the processing in the control unit 1314 can be lightened or the circuit scale of the control unit can be reduced.
(Tenth Embodiment)
FIG. 16 is a diagram showing a tenth embodiment of the present invention. The authentication device 1400 of this embodiment includes a second thermoelectric conversion element 1411 having a correct pattern shape and a control unit 1414. The control unit 1414 generates the first power generated when the user touches the second thermoelectric conversion element 1411 (1453 in FIG. 16) and the first power generated when the user touches the entire correct pattern (1452 in FIG. 16). The second power that is applied. The control unit 1414 also calculates the difference between the first power and the second power. As a result of the comparison by the control unit 1414, when the difference between the first power and the second power is within the allowable range and when at least one of the case where the generation of the first power is not interrupted is satisfied is satisfied. Then, the user is authenticated. In addition, in FIG. 16, the incorrect answer detection element is omitted. The function of the incorrect answer detection element is as described in the first embodiment. Further, the incorrect answer detection element is arranged as shown in FIG.
　本実施形態では、第９の実施形態と同じく、セキュリティが向上する。その上、制御部１４１４での処理が軽くなり、または制御部１４１４の回路規模を小さくできる。
（第１１の実施形態）
　図１７は、本発明の第１１の実施形態を示す図である。本実施形態の認証システムは、認証用装置１５００と認証装置３５００を備えている。認証用装置１５００は正解パターン形状を持つ第２の熱電変換素子１５１１と、制御部１５１４を有する。制御部１５１４は、ユーザが第２の熱電変換素子１５１１に触れることで（図１７の１５５３）生成される第１の電力、または、第１の電力の生成が途切れる時間の有無の情報を、認証装置３５００に送る。認証装置３５００は、第１の電力と、ユーザが正解パターン全体に触れた場合（図１７の１５５２）に生成される第２の電力とを比較する。また、制御部１５１４は、第１の電力と第２の電力との差を算出する。そして、制御部１５１４による比較の結果、第１の電力と第２の電力との差が許容範囲内であった場合、及び、第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に、ユーザが認証される。なお、図１７にて、不正解検知素子を省略している。不正解検知素子の機能については、第１の実施形態で説明通りである。また、不正解検知素子は図９に示されるように配置される。 In the present embodiment, security is improved as in the ninth embodiment. In addition, the processing in the control unit 1414 can be lightened, or the circuit scale of the control unit 1414 can be reduced.
(Eleventh Embodiment)
FIG. 17: is a figure which shows the 11th Embodiment of this invention. The authentication system of this embodiment includes an authentication device 1500 and an authentication device 3500. The authentication device 1500 includes a second thermoelectric conversion element 1511 having a correct pattern shape and a control unit 1514. The control unit 1514 authenticates the first power generated by the user touching the second thermoelectric conversion element 1511 (1553 in FIG. 17), or the information about the presence or absence of the time when the generation of the first power is interrupted. Send to device 3500. The authentication device 3500 compares the first power with the second power generated when the user touches the entire correct answer pattern (1552 in FIG. 17). The control unit 1514 also calculates the difference between the first power and the second power. Then, as a result of the comparison by the control unit 1514, at least one of the case where the difference between the first power and the second power is within the allowable range and the case where the generation of the first power is not interrupted is satisfied. If so, the user is authenticated. In addition, in FIG. 17, the incorrect answer detection element is omitted. The function of the incorrect answer detection element is as described in the first embodiment. Further, the incorrect answer detection element is arranged as shown in FIG.
　本実施形態では、第９および１０の実施形態と同じく、セキュリティが向上する。 In this embodiment, the security is improved as in the ninth and tenth embodiments.
　（別の実施形態）
　上述の実施形態では、本発明を認証カードに適用した例を述べたが、カード以外の形状のものにも適用できる。例えば、手で握りやすい形状、キーホルダーの形状等のものにも本発明を適用できる。また、上述の実施形態では、発信部と受信部は無線接続しているが、有線接続であってもよいことはいうまでもない。 (Another embodiment)
In the above-mentioned embodiment, the example in which the present invention is applied to the authentication card has been described, but the present invention can be applied to a shape other than the card. For example, the present invention can be applied to a shape that can be easily grasped by a hand, a shape of a key chain, and the like. Further, in the above-described embodiment, the transmitting unit and the receiving unit are wirelessly connected, but it goes without saying that they may be wired connection.
　また第１および第４の実施形態で、強磁性体を用いたスピン熱電変換素子は、正解パターンが秘匿できない可能性があることを述べた。しかし、ワンタイムパスとして１回だけ使い、２回以上使わないようにすれば、強磁性体を用いたスピン熱電変換素子でも十分使うことができる。 Also, in the first and fourth embodiments, it has been stated that the correct pattern may not be concealed in the spin thermoelectric conversion element using the ferromagnetic material. However, if it is used only once as a one-time pass and not used twice or more, a spin thermoelectric conversion element using a ferromagnetic material can be used sufficiently.
　また、上述の実施形態は、ユーザが認証カード等を手で持ってパターンを入力するものを適用したが、施設や電子装置の操作パネルを適用してもよい。つまり、たとえば、図１８に示すように、壁に入力部１８１３をパネルとして設置する。制御部、発信部を、壁に埋め込んだり、入力部と背中合わせに設置したりして、壁の背後に隠す。このようにすると、正解パターンを知っている特定のユーザだけが、扉を開けることができる。 Also, in the above-described embodiment, the user inputs the pattern while holding the authentication card or the like by hand, but the operation panel of the facility or the electronic device may be applied. That is, for example, as shown in FIG. 18, the input unit 1813 is installed as a panel on the wall. The control unit and transmitter unit are embedded in the wall or installed back to back with the input unit, and hidden behind the wall. In this way, only a specific user who knows the correct answer pattern can open the door.
　また、上述の実施形態では、本発明の認証装置を施設や電子装置を開錠する鍵に適用したが、チケット、紙幣などにも適用できる。また、指で直接カードに触れず、熱が伝わりやすい金属のペンでカードに触れても良い。 Further, in the above-described embodiment, the authentication device of the present invention is applied to a key for unlocking a facility or an electronic device, but it can also be applied to a ticket, a bill, or the like. Also, instead of directly touching the card with your finger, you may touch the card with a metal pen that easily transfers heat.
　また、上述の実施形態では、熱電変換素子としてスピン熱電変換素子を用いたが、ゼーベック効果を用いた熱電変換素子や、ペルチエ素子などの他のタイプの素子を用いてもよい。 Further, in the above-mentioned embodiment, the spin thermoelectric conversion element is used as the thermoelectric conversion element, but other types of elements such as a thermoelectric conversion element using the Seebeck effect or a Peltier element may be used.
　また、上述の実施形態では、発信部が無線で認証信号等を発信したが、赤外光を用いて認証情報等を発信してもよい。具体的には、図１９に示すような回路を使えばよい。図１９では、第１の実施形態の認証カードの制御部１４および発信部１５だけを抽出している。また、図１９では、発信部１５には、アンテナ１６（図１を参照。）に代えて、赤外光発光部９１６が接続されている。制御部１４から出力された認証信号が、発信部１５に入力する。発信部１５は、信号の電圧、周波数などを調整して、認証信号を赤外光発光部９１６に出力する。赤外光発光部９１６は、駆動用トランジスタで赤外線発光ＬＥＤ（Light Emitting Diode）を駆動することにより、信号を乗せた赤外光（赤外線信号）を施設や電子装置の受信部の受光素子（不図示）に向けて発光させる。
　以上、実施形態（及び実施例）を参照して本願発明を説明したが、本願発明は上記実施形態（及び実施例）に限定されるものではない。本願発明の構成や詳細には、本願発明のスコープ内で当業者が理解し得る様々な変更をすることができる。
　この出願は、２０１８年１２月１８日に出願された日本出願特願２０１８－２３６５３６を基礎とする優先権を主張し、その開示の全てをここに取り込む。 Further, in the above-described embodiment, the transmitting unit wirelessly transmits the authentication signal and the like, but infrared light may be used to transmit the authentication information and the like. Specifically, a circuit as shown in FIG. 19 may be used. In FIG. 19, only the control unit 14 and the transmission unit 15 of the authentication card of the first embodiment are extracted. Further, in FIG. 19, an infrared light emitting section 916 is connected to the transmitting section 15 instead of the antenna 16 (see FIG. 1). The authentication signal output from the controller 14 is input to the transmitter 15. The transmitter 15 adjusts the voltage and frequency of the signal and outputs the authentication signal to the infrared light emitter 916. The infrared light emitting unit 916 drives the infrared light emitting LED (Light Emitting Diode) with a driving transistor to transmit infrared light carrying a signal (infrared signal) to a light receiving element (non-light receiving unit) of a receiving unit of a facility or an electronic device. The light is emitted toward (in the figure).
Although the present invention has been described with reference to the exemplary embodiments (and examples), the present invention is not limited to the above-described exemplary embodiments (and examples). Various modifications that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.
This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2018-236536 for which it applied on December 18, 2018, and takes in those the indications of all here.
　上記の実施形態の一部または全部は、以下の付記のようにも記載されうるが、以下には限られない。
（付記１）
　複数の第１の熱電変換素子、不正解検知用熱電変換素子及び制御部を備えた認証装置であって、
前記制御部は、前記複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、正解パターンとを比較し、前記第１のパターンが前記正解パターンに一致した場合に前記ユーザを認証し、前記不正解検知用熱電変換素子に前記ユーザが触れると認証しないことを特徴とする認証装置。
(付記２)
　複数の第１の熱電変換素子、不正解検知用熱電変換素子及びと制御部を有する認証用装置を備え、
前記制御部は、前記複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、前記不正解検知用熱電変換素子に触れたか否かの情報を認証装置に送り、
前記認証装置は前記第１のパターンと正解パターンとを比較し、前記第１のパターンが前記正解パターンに一致した場合に前記ユーザを認証し、前記情報が前記不正解検知用熱電変換素子に前記ユーザが触れたことを示すと認証しないことを特徴とする認証システム。
(付記３)
　正解パターンの形状をなす第２の熱電変換素子と制御部を備えた認証装置であって、
前記制御部は、ユーザが前記第２の熱電変換素子に触れて生成した第１の電力と、正解パターン全体に触れた場合に生成する第２の電力とを前記制御部が比較し、前記第１、第２の電力の差が許容範囲内であった場合及び前記第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に前記ユーザが認証されることを特徴とする認証装置。
(付記４)
　正解パターンの形状をなす第２の熱電変換素子と制御部を有する認証用装置を備え、
前記制御部は、ユーザが前記第２の熱電変換素子に触れて生成した第１の電力、または、前記第１の電力の生成が途切れる時間の有無の情報を認証装置に送り、
前記認証装置は、前記第１の電力と正解パターン全体に触れた場合に生成する第２の電力とを比較して前記第１、第２の電力の差が許容範囲内であった場合、及び、前記第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に前記ユーザが認証されることを特徴とする認証システム。
(付記５)
　前記ユーザが触れると不正解となる不正解検知用熱電変換素子を備えた請求項２または４に記載の認証システム。
(付記６)
　前記第１のパターンが前記正解パターンに一致し、しかも前記第１の熱電変換素子に触れた順序も正しい場合に認証する付記１または２に記載の認証装置。
(付記７)
　前記複数の第１の熱電変換素子の表面に目隠し膜を形成した付記１，３，６のいずれか一項に記載の認証装置。
(付記８)
　前記第１の熱電変換素子及び前記不正解検知用熱電変換素子の磁性体として反強磁性体を用いる付記１、３，６、７のいずれか一項に記載の認証装置。
(付記９)
　前記複数の第１の熱電変換素子上に熱生成膜を設けた付記１、３，６、７，８のいずれか一項に記載の認証装置。
(付記１０)
　前記第１の熱電変換素子とは別の第３の熱電変換素子を備え、前記制御部は前記第３の熱電変換素子で生成した電力も用いて動作する付記１、３，６、７，８，９のいずれか一項に記載の認証装置。
(付記１１)
　前記制御部は前記ユーザが前記第１の熱電変換素子を触れたことにより生成する電力で動作する付記１、３，６、７，８，９，１０のいずれか一項に記載の認証装置。
(付記１２)
　前記複数の第１の熱電変換素子及び前記不正解検知用熱電変換素子は前記制御部と配線で接続され、前記制御部は対象装置へ送る信号を発信部に送り、前記発信部は接続したアンテナから前記対象装置に前記信号を送る付記１に記載の認証装置。
(付記１３)
　前記正解パターンは一筆書きできるパターンである付記１、３，６、７，８，９，１０，１１、１２のいずれか一項に記載の認証装置。
(付記１４)
　前記ユーザが触れると不正解になるダミーの熱電変換素子を前記複数の第１の熱電変換素子の中に配置した付記１、３、６、７，８，９，１０，１１、１２、１３のいずれか一項に記載の認証装置。
(付記１５)
　前記ユーザが触れても正解、不正解に影響がないダミーの熱電変換素子を前記複数の第１の熱電変換素子の中に配置した付記１、３、６、７，８，９，１０，１１、１２、１３のいずれか一項に記載の認証装置。
(付記１６)
　前記正解パターンの始点となる箇所にガイドマークを配置した付記１、３，６、７，８，９，１０，１１、１２、１３，１４，１５のいずれか一項に記載の認証装置。 The whole or part of the exemplary embodiments disclosed above can be described as, but not limited to, the following supplementary notes.
(Appendix 1)
An authentication device comprising a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit,
The control unit compares a first pattern that occurs depending on which of the plurality of first thermoelectric conversion elements the user touches to generate electric power, and a correct pattern, and the first pattern is An authentication device, wherein the user is authenticated when the correct answer pattern is matched, and is not authenticated when the user touches the incorrect answer detection thermoelectric conversion element.
(Appendix 2)
An authentication device having a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit,
Of the plurality of first thermoelectric conversion elements, the control unit generates a first pattern that occurs depending on which one of the first thermoelectric conversion elements the user touches to generate electric power, and whether or not the incorrect answer detection thermoelectric conversion element is touched. Sent to the authentication device,
The authentication device compares the first pattern with the correct answer pattern, authenticates the user when the first pattern matches the correct answer pattern, and the information is stored in the incorrect answer detection thermoelectric conversion element. An authentication system characterized by not authenticating when a user touches it.
(Appendix 3)
An authentication device comprising a second thermoelectric conversion element having a correct pattern shape and a control unit,
The controller compares the first power generated by the user touching the second thermoelectric conversion element with the second power generated when the user touches the entire correct pattern, and the controller compares the first power with the second power. Authentication, wherein the user is authenticated when at least one of the case where the difference between the first power and the second power is within an allowable range and the case where there is no time for which the generation of the first power is interrupted is satisfied. apparatus.
(Appendix 4)
An authentication device having a second thermoelectric conversion element having a correct pattern and a control unit is provided,
The control unit sends the first power generated by the user touching the second thermoelectric conversion element, or information indicating whether or not there is a time period during which the generation of the first power is interrupted, to the authentication device,
The authentication device compares the first power with the second power generated when the entire correct answer pattern is touched, and the difference between the first power and the second power is within an allowable range, and An authentication system characterized in that the user is authenticated when at least one of the cases where the generation of the first power is not interrupted is satisfied.
(Appendix 5)
The authentication system according to claim 2 or 4, further comprising an incorrect answer detection thermoelectric conversion element that becomes an incorrect answer when touched by the user.
(Appendix 6)
3. The authentication device according to appendix 1 or 2, which authenticates when the first pattern matches the correct pattern and the order in which the first thermoelectric conversion element is touched is correct.
(Appendix 7)
7. The authentication device according to any one of appendices 1, 3, and 6, wherein a blindfold film is formed on the surfaces of the plurality of first thermoelectric conversion elements.
(Appendix 8)
8. The authentication device according to any one of appendices 1, 3, 6, and 7, wherein an antiferromagnetic material is used as a magnetic material of the first thermoelectric conversion element and the incorrect-solution detection thermoelectric conversion element.
(Appendix 9)
9. The authentication device according to any one of appendices 1, 3, 6, 7, and 8, wherein a heat generating film is provided on the plurality of first thermoelectric conversion elements.
(Appendix 10)
Supplementary notes 1, 3, 6, 7, 8 that include a third thermoelectric conversion element different from the first thermoelectric conversion element, and the control unit operates using the electric power generated by the third thermoelectric conversion element. , 9. The authentication device according to any one of claims 9 and 10.
(Appendix 11)
The authentication device according to any one of appendices 1, 3, 6, 7, 8, 9, and 10, wherein the control unit operates with electric power generated by the user touching the first thermoelectric conversion element.
(Appendix 12)
The plurality of first thermoelectric conversion elements and the incorrect answer detection thermoelectric conversion elements are connected to the control unit by wiring, the control unit sends a signal to be sent to the target device to the transmission unit, and the transmission unit is connected to the antenna. The authentication device according to appendix 1, which transmits the signal from the target device to the target device.
(Appendix 13)
The authentication device according to any one of appendices 1, 3, 6, 7, 8, 9, 10, 11, and 12, wherein the correct answer pattern is a pattern that can be written with one stroke.
(Appendix 14)
The dummy thermoelectric conversion elements which are incorrect when touched by the user are arranged in the plurality of first thermoelectric conversion elements, in addition 1, 3, 6, 7, 8, 9, 10, 11, 11, 12, 13. The authentication device according to any one of claims.
(Appendix 15)
Additional notes 1, 3, 6, 7, 8, 9, 10, 11 in which dummy thermoelectric conversion elements that do not affect the correct and incorrect answers even if touched by the user are arranged in the plurality of first thermoelectric conversion elements , 12, and 13. The authentication device according to any one of items.
(Appendix 16)
16. The authentication device according to any one of appendices 1, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 in which a guide mark is arranged at a position that is a starting point of the correct pattern.
　１０、５０，４００　　認証カード
　１１、５１、８１　　スピン熱電変換素子
　１２　　正解パターン
　１３，９３、３１３，１８１３　　入力部
　１４，５４、９４、２１４、３１４　　制御部
　１５、５５、９５　　発信部
　１６、５６　　アンテナ
　１８　　不正解検知用スピン熱電変換素子
　１９　　内部配線
　２１　　カード基板
　２５　　目隠し膜
　３１　　GGG基板
　３２　　磁性絶縁体層
　３３　　金属膜
　３４，３５　　電極
　４３、４４、５３　　不正解パターン
　４５　　枠線
　４２、５２　正解パターン
　８３　熱生成膜
　８５　　薄い絶縁層
　９１　　駆動用熱電変換素子
　９２　　蓄電部
　１００，３００　　認証用装置
　１１０　　ダミーのスピン熱電変換素子
　３５０　　認証装置
　２００，２５０　　施設または電子装置
　２０１　　受信部
　２０２、３０２　　認証部
　５４１　　電力比較部
　５４２　　途切れ検知部
　９１６　　赤外光発光部 10, 50, 400 Authentication card 11, 51, 81 Spin thermoelectric conversion element 12 Correct answer pattern 13, 93, 313, 1813 Input section 14, 54, 94, 214, 314 Control section 15, 55, 95 Transmitting section 16, 56 Antenna 18 Spin thermoelectric conversion element for incorrect answer detection 19 Internal wiring 21 Card substrate 25 Blinding film 31 GGG substrate 32 Magnetic insulator layer 33 Metal film 34, 35 Electrodes 43, 44, 53 Incorrect pattern 45 Frame line 42, 52 Correct pattern 83 Heat-generating film 85 Thin insulating layer 91 Driving thermoelectric conversion element 92 Power storage unit 100,300 Authentication device 110 Dummy spin thermoelectric conversion element 350 Authentication device 200,250 Facility or electronic device 201 Reception unit 202,302 Authentication unit 541 Power comparison Part 542 Break detection unit 916 Infrared light emitting unit

Claims (16)

  1. 　複数の第１の熱電変換素子、不正解検知用熱電変換素子及び制御部を備えた認証装置であって、
    前記制御部は、前記複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、正解パターンとを比較し、前記第１のパターンが前記正解パターンに一致した場合に前記ユーザを認証し、前記不正解検知用熱電変換素子に前記ユーザが触れると認証しないことを特徴とする認証装置。     An authentication device comprising a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit,
    The control unit compares a first pattern that occurs depending on which of the plurality of first thermoelectric conversion elements the user touches to generate electric power, and a correct pattern, and the first pattern is An authentication device, wherein the user is authenticated when the correct answer pattern is matched, and is not authenticated when the user touches the incorrect answer detection thermoelectric conversion element.
  2. 　複数の第１の熱電変換素子、不正解検知用熱電変換素子及びと制御部を有する認証用装置を備え、
    　前記制御部は、前記複数の第１の熱電変換素子のうち、ユーザがどれに触れて電力を生成したかで生起する第１のパターンと、前記不正解検知用熱電変換素子に触れたか否かの情報を認証装置に送り、
    　前記認証装置は前記第１のパターンと正解パターンとを比較し、前記第１のパターンが前記正解パターンに一致した場合に前記ユーザを認証し、前記情報が前記不正解検知用熱電変換素子に前記ユーザが触れたことを示すと認証しないことを特徴とする認証システム。     An authentication device having a plurality of first thermoelectric conversion elements, an incorrect solution detection thermoelectric conversion element, and a control unit,
    Of the plurality of first thermoelectric conversion elements, the control unit generates a first pattern that occurs depending on which one of the first thermoelectric conversion elements the user touches to generate electric power, and whether or not the incorrect solution detection thermoelectric conversion element is touched. Sent to the authentication device,
    The authentication device compares the first pattern with the correct answer pattern, authenticates the user when the first pattern matches the correct answer pattern, and the information is stored in the incorrect answer detection thermoelectric conversion element. An authentication system characterized by not authenticating when a user touches it.
  3. 　正解パターンの形状をなす第２の熱電変換素子と制御部を備えた認証装置であって、
    前記制御部は、ユーザが前記第２の熱電変換素子に触れて生成した第１の電力と、正解パターン全体に触れた場合に生成する第２の電力とを前記制御部が比較し、前記第１、第２の電力の差が許容範囲内であった場合及び前記第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に前記ユーザが認証されることを特徴とする認証装置。     An authentication device comprising a second thermoelectric conversion element having a correct pattern shape and a control unit,
    The controller compares the first power generated by the user touching the second thermoelectric conversion element with the second power generated when the user touches the entire correct pattern, and the controller compares the first power with the second power. Authentication, wherein the user is authenticated when at least one of the case where the difference between the first power and the second power is within an allowable range and the case where there is no time for which the generation of the first power is interrupted are satisfied. apparatus.
  4. 　正解パターンの形状をなす第２の熱電変換素子と制御部を有する認証用装置を備え、
    　前記制御部は、ユーザが前記第２の熱電変換素子に触れて生成した第１の電力、または、前記第１の電力の生成が途切れる時間の有無の情報を認証装置に送り、
    　前記認証装置は、前記第１の電力と正解パターン全体に触れた場合に生成する第２の電力とを比較して前記第１、第２の電力の差が許容範囲内であった場合、及び、前記第１の電力の生成が途切れる時間がない場合の少なくとも一方を満足した場合に前記ユーザが認証されることを特徴とする認証システム。     An authentication device having a second thermoelectric conversion element having a correct pattern and a control unit is provided,
    The control unit sends the first power generated by the user touching the second thermoelectric conversion element, or information indicating whether or not there is a time period during which the generation of the first power is interrupted, to the authentication device,
    The authentication device compares the first power with the second power generated when the entire correct answer pattern is touched, and the difference between the first power and the second power is within an allowable range, and An authentication system characterized in that the user is authenticated when at least one of the cases where the generation of the first power is not interrupted is satisfied.
  5. 　前記ユーザが触れると不正解となる不正解検知用熱電変換素子を備えた請求項２または４に記載の認証システム。 The authentication system according to claim 2 or 4, comprising an incorrect answer detection thermoelectric conversion element that becomes an incorrect answer when touched by the user.
  6. 　前記第１のパターンが前記正解パターンに一致し、しかも前記第１の熱電変換素子に触れた順序も正しい場合に認証する請求項１または２に記載の認証装置。 The authentication device according to claim 1 or 2, wherein authentication is performed when the first pattern matches the correct pattern and the order in which the first thermoelectric conversion element is touched is correct.
  7. 　前記複数の第１の熱電変換素子の表面に目隠し膜を形成した請求項１、３および６のいずれか一項に記載の認証装置。 The authentication device according to any one of claims 1, 3 and 6, wherein a blind film is formed on the surface of the plurality of first thermoelectric conversion elements.
  8. 　前記第１の熱電変換素子及び前記不正解検知用熱電変換素子の磁性体として反強磁性体を用いる請求項１、３、６および７のいずれか一項に記載の認証装置。 The authentication device according to any one of claims 1, 3, 6 and 7, wherein an antiferromagnetic material is used as the magnetic material of the first thermoelectric conversion element and the incorrect-solution detection thermoelectric conversion element.
  9. 　前記複数の第１の熱電変換素子上に熱生成膜を設けた請求項１、３、６、７および８のいずれか一項に記載の認証装置。 The authentication device according to any one of claims 1, 3, 6, 7 and 8, wherein a heat generating film is provided on the plurality of first thermoelectric conversion elements.
  10. 　前記第１の熱電変換素子とは別の第３の熱電変換素子を備え、前記制御部は前記第３の熱電変換素子で生成した電力も用いて動作する請求項１、３，６、７、８および９のいずれか一項に記載の認証装置。 The 3rd thermoelectric conversion element different from the 1st thermoelectric conversion element is provided, and the control part operates using electric power generated by the 3rd thermoelectric conversion element. The authentication device according to any one of 8 and 9.
  11. 　前記制御部は前記ユーザが前記第１の熱電変換素子を触れたことにより生成する電力で動作する請求項１、３、６、７、８、９および１０のいずれか一項に記載の認証装置。 The authentication device according to any one of claims 1, 3, 6, 7, 8, 9 and 10, wherein the control unit operates with electric power generated by the user touching the first thermoelectric conversion element. ..
  12. 　前記複数の第１の熱電変換素子及び前記不正解検知用熱電変換素子は前記制御部と配線で接続され、前記制御部は対象装置へ送る信号を発信部に送り、前記発信部は接続したアンテナから前記対象装置に前記信号を送る請求項１に記載の認証装置。 The plurality of first thermoelectric conversion elements and the incorrect answer detection thermoelectric conversion elements are connected to the control unit by wiring, the control unit sends a signal to be sent to the target device to the transmission unit, and the transmission unit is connected to the antenna. The authentication device according to claim 1, wherein the authentication device sends the signal to the target device.
  13. 　前記正解パターンは一筆書きできるパターンである請求項１、３、６、７、８、９、１０、１１および１２のいずれか一項に記載の認証装置。 The authentication device according to any one of claims 1, 3, 6, 7, 8, 9, 10, 11 and 12, wherein the correct answer pattern is a pattern that can be written with one stroke.
  14. 　前記ユーザが触れると不正解になるダミーの熱電変換素子を前記複数の第１の熱電変換素子の中に配置した請求項１、３、６、７、８、９、１０、１１、１２および１３のいずれか一項に記載の認証装置。 14. A dummy thermoelectric conversion element which is incorrect when touched by the user is arranged in the plurality of first thermoelectric conversion elements. The authentication device according to any one of 1.
  15. 　前記ユーザが触れても正解、不正解に影響がないダミーの熱電変換素子を前記複数の第１の熱電変換素子の中に配置した請求項１、３、６、７、８、９、１０、１１、１２および１３のいずれか一項に記載の認証装置。 The dummy thermoelectric conversion element which does not affect the correct answer and the incorrect answer even if the user touches is arranged in the plurality of first thermoelectric conversion elements. 1, 3, 6, 7, 8, 9, 10, The authentication device according to any one of 11, 12, and 13.
  16. 　前記正解パターンの始点となる箇所にガイドマークを配置した請求項１、３、６、７、８、９、１０、１１、１２、１３、１４および１５のいずれか一項に記載の認証装置。 The authentication device according to any one of claims 1, 3, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15, wherein a guide mark is arranged at a starting point of the correct pattern.
PCT/JP2019/047988 2018-12-18 2019-12-09 Authentication device and authentication system WO2020129719A1 (en)

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JP2001142849A (en) * 1999-11-16 2001-05-25 Ntt Docomo Inc Portable information terminal and personal authentication method
JP2004259107A (en) * 2003-02-27 2004-09-16 Mitsubishi Electric Corp Personal digital assistant
JP2004272719A (en) * 2003-03-11 2004-09-30 Sharp Corp Electronic apparatus
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