WO2016199415A1 - Dispositif d'entrée d'informations et système d'appariement - Google Patents

Dispositif d'entrée d'informations et système d'appariement Download PDF

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Publication number
WO2016199415A1
WO2016199415A1 PCT/JP2016/002781 JP2016002781W WO2016199415A1 WO 2016199415 A1 WO2016199415 A1 WO 2016199415A1 JP 2016002781 W JP2016002781 W JP 2016002781W WO 2016199415 A1 WO2016199415 A1 WO 2016199415A1
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WO
WIPO (PCT)
Prior art keywords
information
display
unit
input device
display information
Prior art date
Application number
PCT/JP2016/002781
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English (en)
Japanese (ja)
Inventor
藤男 奥村
Original Assignee
日本電気株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 日本電気株式会社 filed Critical 日本電気株式会社
Priority to JP2017523113A priority Critical patent/JP6693518B2/ja
Publication of WO2016199415A1 publication Critical patent/WO2016199415A1/fr

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • 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
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
    • G09G5/37—Details of the operation on graphic patterns
    • G09G5/377—Details of the operation on graphic patterns for mixing or overlaying two or more graphic patterns

Definitions

  • the present invention relates to an information input device and a verification system.
  • the present invention relates to an information input device and a verification system used for inputting information such as an authentication password.
  • An input device for inputting information such as an authentication password is installed in a system such as ATM (Automatic Teller Machine) installed in a public place.
  • a system such as ATM (Automatic Teller Machine) installed in a public place.
  • the system user inputs information according to a numeric keypad displayed on the touch panel of the input device.
  • a third party may look into the information.
  • Patent Document 1 discloses a display system that prevents peeping by a third party.
  • effective display information to be recognized by the user and dummy display information of the same type and different content from the effective display information are switched at high speed and displayed on the display unit.
  • the user recognizes effective display information displayed on the display unit through a shutter that opens and closes in synchronization with an image that switches at high speed.
  • a third party cannot recognize which display information displayed on the display unit is effective display information. Therefore, the user can input information to the input device so that a third party cannot recognize it.
  • the frame rate of an image that can be displayed on the display device of the system of Patent Document 1 is about 360 frames per second (hereinafter referred to as fps: frames per second). With such a frame rate, there is a possibility that an image group displayed on the display unit is recognized without taking a shutter by shooting with a high-speed camera of 1000 fps class. For this reason, in the system of Patent Document 1, a candidate of information input by the user is obtained by photographing an image included in the image group displayed on the display unit and the movement of the user's finger using a high-speed camera. May be squeezed.
  • An object of the present invention is to provide an information input device capable of improving the confidentiality of input information by switching display information at high speed in order to solve the above-described problems.
  • An information input apparatus includes a spatial modulation element having a display section divided into a plurality of display areas, and a light source including a plurality of light emitting sections associated with each of the plurality of display areas.
  • Projection means for projecting display information formed on the display area of the spatial modulation element based on the light to the operation area, and effective display information included in the display information is displayed in the operation area.
  • a shutter mechanism that opens in accordance with the timing to be operated, an imaging means for acquiring the operation content on the operation area as image information, and a display for displaying a pattern for displaying display information in the operation area on the display unit of the spatial modulation element
  • Control conditions including a condition and a synchronization condition that matches a timing for switching a plurality of light emitting units and a timing for opening the shutter mechanism, and the image information acquired by the imaging unit is set.
  • control means for outputting an operation information associated with a the determined operation content and effective display information from.
  • a collation system of the present invention includes a spatial modulation element having a display section divided into a plurality of display areas, and a light source including a plurality of light emitting sections associated with each of the plurality of display areas.
  • Projection means for projecting display information formed on the light irradiated onto the display section of the modulation element to the operation area, and effective display information included in the display information is displayed in the operation area.
  • a shutter mechanism that opens in accordance with the timing to be operated, an imaging means for acquiring operation contents on the operation area as image information, and a display condition for displaying a pattern for displaying display information in the operation area on the display unit of the spatial modulation element And a control condition that includes a timing for switching a plurality of light emitting units and a synchronization condition for matching the timing for opening the shutter mechanism, and the image information acquired by the imaging means.
  • Information input device comprising a control means for outputting operation information in which the operation content determined from the information and the effective display information are associated with each other, and authentication information acquired from the information input device via the network and stored in the own device And a server that transmits the verification result of the operation information and the authentication information to the host system.
  • an information input device capable of improving the confidentiality of input information by switching display information at high speed.
  • FIG. It is a block diagram which shows the structure of the key arrangement
  • FIG. 1 shows an appearance of an information input device 10 according to the first embodiment of the present invention.
  • FIG. 1 is an image in which a user inputs information to the information input device 10.
  • the information input device 10 is a terminal provided with an interface device 11 that projects display information on an operation area 12 that receives a user operation and images an operation performed on the operation area 12.
  • the interface device 11 is provided with a camera window 112 for the built-in image sensor to image the operation area 12 and a projection window 113 for projecting display information.
  • the interface device 11 includes a projecting unit including a phase modulation type spatial modulation element and a light source having a plurality of light emitting units for irradiating light to the display unit of the spatial modulation element.
  • the interface device 11 reflects the light emitted from the light source by the display unit of the spatial modulation element, and projects the display information on the operation area 12.
  • the display unit of the spatial modulation element of the interface device 11 is divided into a plurality of display areas, and different images can be displayed in each display area.
  • the plurality of light emitting units constituting the light source of the interface device 11 are provided in association with each display region of the spatial modulation element.
  • the interface apparatus 11 switches the display area to which light is irradiated by switching the light emission part which radiate
  • the information input device 10 includes an optical shutter 13 (also referred to as a shutter mechanism) for recognizing display information displayed in the operation area 12.
  • the optical shutter 13 is disposed above the operation area 12.
  • the optical shutter 13 is disposed so as to be positioned between the user and the operation area 12 when the user performs an operation on the operation area 12. The user recognizes the operation area 12 through the optical shutter 13 when operating the operation area 12.
  • the optical shutter 13 opens at a timing when display information (hereinafter referred to as effective display information) to be recognized by the user by the interface device 11 is displayed in the operation area 12, and closes at a timing when other display information is displayed in the operation area 12. To be controlled.
  • the optical shutter 13 opens in accordance with the timing at which the effective display information included in the plurality of display information is displayed in the operation area 12. Therefore, only the user who is looking at the operation area 12 through the optical shutter 13 can recognize the effective display information displayed in the operation area 12.
  • the optical shutter 13 can be realized by, for example, a MEMS (Micro Electro Mechanical Systems) shutter as described in Non-Patent Document 1 below. If a MEMS shutter is used, a response of about 20 microseconds is possible.
  • Non-Patent Document 1 N. Hagood et.al., “A Direct-View MEMS Display for Mobile Applications,” SID Symposium Digest of Technical Papers, Vol.1 (1), May 2007, pp.1278-1281 (2007 )
  • the optical shutter 13 can also be realized by a liquid crystal shutter composed of a pair of polarizers that cross each other with a liquid crystal cell interposed therebetween.
  • the liquid crystal shutter can be controlled to open and close by applying a driving voltage to realign liquid crystal molecules contained in the liquid crystal cell and changing the phase difference of light passing through the liquid crystal cell. If a response speed of several tens of microseconds to several milliseconds is sufficient, a liquid crystal shutter can be applied to the optical shutter 13.
  • the interface device 11 projects, for example, a key arrangement (also referred to as display information) in a matrix format including 12 symbols “0 to 1, X, #” to the operation area 12. At this time, the interface device 11 projects a dummy key arrangement (dummy display information) different from the effective key arrangement to the operation area 12 one after another along with the effective key arrangement (also referred to as effective display information) to be presented to the user.
  • a key arrangement also referred to as display information
  • dummy display information different from the effective key arrangement to the operation area 12 one after another along with the effective key arrangement (also referred to as effective display information) to be presented to the user.
  • FIG. 2 is an example of display information projected on the operation area 12.
  • the display information projected on the operation area 12 is recognized as an unintelligible image in which many symbols overlap as shown in the left diagram of FIG.
  • the operation area 12 is viewed through the optical shutter 13
  • an effective key arrangement as shown in the left diagram of FIG. 2 is recognized. Therefore, the user can perform an appropriate operation on the effective key arrangement projected on the operation area 12 by viewing the operation area 12 through the optical shutter 13.
  • the interface device 11 projects each symbol constituting the key array to a predetermined position in the operation area 12 according to the arrangement order of the symbols constituting the key array. Therefore, if the effective key arrangement is determined, it is possible to specify at which position in the operation area 12 each symbol is arranged.
  • the first column from the left is “2, 5, 1, 7”, the second column is “#, 6, 9, 3”, and the third column is “4, 8, 0”. , X ”.
  • the matrix-type key arrangement starts with the symbols in the first column and the first row from the left, and represents the symbols in order from the top row for each column.
  • a comma “,” is written after the symbol in the bottom row, and thereafter, the symbols in the column on the right are arranged in order from the top.
  • the key layout in the right diagram of FIG. 2 is expressed as “2517, # 693, 480X”. Note that commas may be omitted.
  • the user views the operation area 12 through the optical shutter 13. Therefore, it is impossible for a person other than the user to look directly into the optical shutter 13 during the user's operation.
  • the display information displayed in the operation area is switched as the light source is switched. Therefore, according to the present embodiment, high-speed image switching that is not limited by the response speed of the liquid crystal can be performed.
  • FIG. 3 is a conceptual diagram showing a configuration of the verification system 1 including the information input device 10 of the present embodiment.
  • the verification system 1 performs user authentication based on the key operation information acquired by the information input device 10.
  • the verification system 1 is a system that is connected to an upper system such as ATM and performs user authentication of a user who uses the upper system.
  • the collation system 1 includes an information input device 10 and a server 102 connected to the information input device 10 via a network 101.
  • the network 101 is a general communication line such as the Internet or an intranet.
  • the server 102 is a general server having an arithmetic function, a control function, a storage function, and the like.
  • the server 102 acquires key operation information from the information processing apparatus 10 and collates the key operation information with user authentication information. Then, when the key operation information matches the user authentication information, the verification system 1 permits the user to log in to the host system.
  • FIG. 4 is a block diagram showing a functional configuration of the information input device 10.
  • the information input device 10 includes an imaging unit 20, a projection unit 30, a control unit 40 and an optical shutter 13.
  • the imaging unit 20, the projection unit 30, and the control unit 40 constitute the interface device 11.
  • an operation area 12 that accepts input of user information is set.
  • the operation area 12 is set at a location where display information can be projected from the interface device 11, such as the housing or the inside of the information input device 10.
  • the operation area 12 may be set outside the information input device 10.
  • FIG. 5 is a conceptual diagram showing how the interface device 11 projects the display information 300 on the operation area 12 and images the operation area 12.
  • the control means 40 controls the projection means 30 so that different display information 300 is projected onto the operation area 12 one after another. Further, the control means 40 controls to open the optical shutter 13 at a timing when the effective display information is displayed as the display information 300 in the operation area 12. And the control means 40 controls the imaging means 20 so that the operation area
  • FIG. 6 is a block diagram illustrating a configuration of the imaging unit 20.
  • the imaging unit 20 includes an imaging device 21, an image processor 23, an internal memory 25, and a data output unit 27.
  • the imaging element 21 is an element for imaging an area including the operation area 12 and acquiring image information.
  • the imaging element 21 is a photoelectric conversion element in which semiconductor components are integrated into an integrated circuit.
  • the image sensor 21 can be realized by a solid-state image sensor such as a CCD (Charge-Coupled Device) or a CMOS (Complementary Metal-Oxide-Semiconductor).
  • the imaging element 21 is configured by an element that captures light in the visible region, but may be configured by an element that can capture and detect electromagnetic waves such as infrared rays, ultraviolet rays, X-rays, gamma rays, radio waves, and microwaves.
  • the image processor 23 performs integrated processing for performing image processing such as dark current correction, interpolation calculation, color space conversion, gamma correction, aberration correction, noise reduction, and image compression on the image information captured by the image sensor 21. Circuit. Note that when the image information is output without being processed, the image processor 23 may be omitted.
  • the image processor 23 can be realized by a processor designed so that the information input apparatus 10 according to the present embodiment performs processing.
  • the internal memory 25 is a storage element that temporarily stores image information that cannot be processed when image processing is performed by the image processor 23 and processed image information. Note that the image information captured by the image sensor 21 may be temporarily stored in the internal memory 25.
  • the internal memory 25 may be configured by a general memory.
  • the data output unit 27 outputs the image information processed by the image processor 23 to the control means 40.
  • FIG. 7 is a block diagram showing the configuration of the projection means 30 according to this embodiment.
  • FIG. 8 is a conceptual diagram for explaining the optical configuration of the projection unit 30 according to the present embodiment.
  • the projection unit 30 includes a control condition acquisition unit 31, a light source control unit 32, a light source 33, a modulation element control unit 35, a spatial modulation element 36, and a projection unit 38.
  • a control condition acquisition unit 31 a light source control unit 32, a light source 33, a modulation element control unit 35, a spatial modulation element 36, and a projection unit 38.
  • the control condition acquisition unit 31 acquires a control condition for controlling the light source 33 and the spatial modulation element 35.
  • the control conditions include a synchronization condition for synchronizing the operations of the light source 33 and the optical shutter 13 and a display condition for causing the spatial modulation element 35 to display the phase distribution at an appropriate timing.
  • the control condition acquisition unit 31 outputs the synchronization condition to the light source control unit 32 and outputs the display condition to the modulation element control unit 35.
  • the light source control unit 32 performs control to switch a plurality of light emitting units constituting the light source 33 at a predetermined timing based on the synchronization condition, and to change the light emitting unit that emits light.
  • the light source 33 includes a plurality of light emitting units that emit light 340 having a specific wavelength. Usually, the light source 33 is configured to emit light 340 in the visible region. The light source 33 may be configured to emit light 340 other than the visible region such as the infrared region and the ultraviolet region. The light emitted from the light source 33 is converted into coherent light 340 by the collimator 34 and is incident on the display unit of the spatial modulation element 36.
  • the incident angle of the light 340 is made non-perpendicular with respect to the display unit of the spatial modulation element 36. That is, the emission axis of the light 340 emitted from the light source 33 is inclined with respect to the display unit of the spatial modulation element 36. If the emission axis of the light 340 is set obliquely with respect to the display unit of the spatial modulation element 36, the efficiency can be improved because the light 340 can be incident on the display unit of the spatial modulation element 36 without using a beam splitter. .
  • FIG. 9 is a conceptual diagram illustrating an arrangement example of a plurality of light emitting units 330 included in the light source 33.
  • Symbols such as A1 and A2 shown in the light emitting unit 330 in FIG. 9 indicate the position of each light emitting unit 330.
  • the rows of the plurality of light emitting units 330 arranged in a matrix are A, B, and C from the top, and the columns are 1, 2, 3, 4, and 5 from the left.
  • the light emitting unit A1, the light emitting unit A2, the several light emission part 330 which comprises the light source 33 can be comprised by arbitrary number of rows and columns.
  • the plurality of light emitting units 330 may be arranged in a concentric or spiral shape instead of a matrix shape.
  • the plurality of light emitting units 330 are controlled to emit light at timings independent of each other.
  • the light emitting unit 330 is controlled to emit light in the order of the light emitting unit A1, the light emitting unit A2,..., The light emitting unit C5.
  • the timing which makes the some light emission part 330 light-emit can be set to arbitrary orders. For example, it may be controlled to switch the light emitting units 330 in a predetermined order at predetermined time intervals, or may be controlled to switch the light emitting units 330 by changing the order at random time intervals.
  • FIG. 10 is a conceptual diagram of a laser array 331 that realizes the light source 33 of FIG.
  • the laser array 331 includes a plurality of light emitting units 332 that are driven and controlled at different timings.
  • the laser array 331 is preferably provided with a heat sink 333 for radiating heat generated by laser irradiation. Further, in order to collimate the laser emitted from the laser array 331, it is preferable to install a collimating lens array 341 in which a collimator is arranged corresponding to each light emitting unit 332 in the subsequent stage of the laser array 331.
  • the laser array 331 may be configured by combining a plurality of color lasers. If the laser array 331 is composed of a combination of a plurality of colors, display information can be multicolored. That is, the light source 33 includes a first light emitting unit that emits light in the first wavelength region, and a second light emitting unit that emits light in a wavelength region different from the light emitted from the first light emitting unit. It can be set as the structure which has at least. The light source 33 may be configured to emit three or more colors.
  • the spatial modulation element 36 displays the phase distribution of the display information projected on the operation area 12 on its own display unit under the control of the modulation element control unit 35.
  • the display unit of the spatial modulation element 36 is divided into a plurality of display areas. Each display area displays a phase distribution corresponding to display information at an independent timing.
  • the spatial modulation element 36 is a phase modulation type spatial modulation element that receives the coherent light 340 having the same phase and modulates the phase of the incident light 340.
  • the spatial modulation element 36 emits the modulated modulated light 370 toward the projection unit 38.
  • the spatial modulation element 36 may be an element of a system different from the phase modulation type as long as display information can be projected onto the operation area 12.
  • the phase distribution of the display information projected on the operation area 12 is displayed.
  • the modulated light 370 reflected from the display area of the spatial modulation element 36 becomes an image in which a kind of diffraction grating forms an aggregate, and display information is formed by collecting the light diffracted by these diffraction gratings.
  • the phase distribution displayed on the display unit of the spatial modulation element may be described as a pattern.
  • the spatial modulation element 36 is realized by a spatial modulation element using, for example, a ferroelectric liquid crystal, a homogeneous liquid crystal, a vertical alignment liquid crystal, or the like.
  • the spatial modulation element 36 can be realized by LCOS (Liquid Crystal Crystal on Silicon).
  • the spatial modulation element 36 may be realized by, for example, MEMS (Micro Electro Mechanical System).
  • the modulation element control unit 35 displays each phase distribution at an appropriate timing on the display unit of the spatial modulation element 36.
  • the modulation element control unit 35 changes the parameter that determines the difference between the phase of the light 340 applied to the display area of the spatial modulation element 36 and the phase of the modulation light 370 reflected from the display area. To control.
  • Parameters that determine the difference between the phase of the light 340 applied to the display unit of the spatial modulation element 36 and the phase of the modulated light 370 reflected by the display unit are, for example, parameters relating to optical characteristics such as refractive index and optical path length. It is.
  • the modulation element control unit 35 changes the refractive index of the display unit by controlling the voltage applied to the display unit of the spatial modulation element 36. As a result, the light 340 applied to the display unit is appropriately diffracted based on the refractive index of the display unit.
  • the phase distribution of the light 340 irradiated on the spatial modulation element 36 is modulated according to the optical characteristics of the display unit.
  • the control of the spatial modulation element 36 by the modulation element control unit 35 is not limited to the above.
  • FIG. 11 is a conceptual diagram in which the response of the liquid crystal of the spatial modulation element 36 is associated with the switching timing of each light emitting unit 330 constituting the light source 33.
  • the response timing of the liquid crystal is controlled by the modulation element control unit 35.
  • the switching timing of each light emitting unit 330 is controlled by the light source control unit 32.
  • each light emitting unit 330 is switched at one liquid crystal response timing.
  • FIG. 11 an example in which the light emitting units 330 are switched in the order of A1 to C5 is shown, but the order of switching is arbitrarily set.
  • the projection unit 38 projects light 340 emitted from the light source 33 as signal light 390.
  • the projection unit 38 includes a Fourier transform lens 381, an aperture 382, and a projection lens 383.
  • the modulated light 370 modulated by the spatial modulation element 36 is projected onto the operation area 12 as signal light 390 by the projection unit 38.
  • the Fourier transform lens 381 is an optical lens for forming an image formed when the modulated light 370 reflected by the display unit of the spatial modulation element 36 is projected at infinity at a nearby focal position.
  • the aperture 382 has a function of erasing higher-order light included in the light focused by the Fourier transform lens 381 and specifying an image region.
  • the opening of the aperture 382 is smaller than the image area of the display information at the position of the aperture 382, and is installed so as to block the peripheral area of the display information at the position of the aperture 382.
  • the opening of the aperture 382 is formed to be rectangular or circular.
  • the aperture 382 is preferably installed at the focal position of the Fourier transform lens 381, but may be shifted from the focal position as long as the function of erasing high-order light can be exhibited.
  • the projection lens 383 is an optical lens that magnifies and projects the light focused by the Fourier transform lens 381.
  • the projection lens 383 projects the signal light 390 so that the target image corresponding to the phase distribution input to the spatial modulation element 36 is displayed on the projection surface.
  • the signal light 380 projected from the projection unit 38 is not projected uniformly on the operation area 12 but concentratedly projected on portions such as characters, symbols, and frames constituting the display information.
  • the projection unit 30 according to the present embodiment is used for the purpose of projecting line drawings such as characters, symbols, and frames, the irradiation amount of the light 340 can be substantially reduced, so that the overall light output can be suppressed. it can. That is, the light source 33 can be composed of a small and low-power light source and a low-output power source that drives the light source.
  • FIG. 12 shows an example in which the display unit of the spatial modulation element 36 is divided into display areas of 3 rows ⁇ 5 columns.
  • the display area of the spatial modulation element 36 may be divided by a method different from that in FIG.
  • each row of the display area constituting the display unit of the spatial modulation element 36 is A, B, and C in order from the top.
  • each column is 1, 2, 3, 4, 5 in order from the left.
  • Each display area is described by combining a row number and a column number.
  • the display area in the m-th row from the top and the n-th column from the left is denoted as “display area mn”.
  • m is A, B or C
  • n is 1, 2, 3, 4 or 5.
  • phase distribution of the display information projected on the operation area 12 is displayed in each display area.
  • the display information itself is shown.
  • the display information itself is shown as a phase distribution for ease of explanation.
  • each light emitting unit 330 of the light source 33 is associated with each display area of the spatial modulation element 36.
  • the display area A1 in FIG. 12 is irradiated with light 340 emitted from the light emitting unit A1 in FIG.
  • the other light emitting units 330 correspond to the respective display areas. Note that the columns of the light emitting units 330 in FIG. 9 and the columns of the display region in FIG. 12 are shown in opposite positions because the light 340 emitted from the light source 33 is reflected by the display unit of the spatial modulation element 36. Because.
  • FIG. 13 shows an example in which the same pattern is displayed in an array on each display area of the spatial modulation element 36. For example, an array pattern of 4 rows ⁇ 4 columns is displayed in the display area A1.
  • the key arrangement of each display area of FIG. 12 is displayed in an array.
  • a plurality of key arrays to be displayed in the display area A1 of FIG. 12 are displayed.
  • the irradiation area of the light 340 can be narrowed down within the broken-line circle in FIG.
  • the irradiation area of the light 340 overlaps with an adjacent display area, and noise may be generated.
  • the irradiation area of the light 340 can be prevented from overlapping with an adjacent display area, so that generation of noise can be suppressed.
  • FIG. 14 is a block diagram showing the configuration of the control means 40 according to this embodiment.
  • the control means 40 includes a processing unit 41, an imaging control unit 42, a projection control unit 43, and a shutter control unit 44.
  • the processing unit 41 acquires key arrangement information including a plurality of key arrangements, and sets the phase distribution of display information to be projected on the projection means 30 using the key arrangement information. Then, the processing unit 41 sets a timing for displaying the phase distribution on the display unit of the spatial modulation element 36. That is, the processing unit 41 sets display conditions including the phase distribution of display information to be projected on the projection unit 30 and the timing for displaying the phase distribution on the display unit of the spatial modulation element 36. The processing unit 41 outputs the set display condition to the projection control unit 43.
  • the processing unit 41 sets the switching timing of the light emitting unit 330 constituting the light source 33. At this time, the processing unit 41 sets a synchronization condition for synchronizing the switching timing of the light emitting unit 330 and the timing of opening the optical shutter 13. The processing unit 41 outputs the set synchronization condition to the projection control unit 43 and the shutter control unit 44.
  • the processing unit 41 instructs the imaging unit 20 to image the operation area 12.
  • the processing unit 41 acquires image information of the operation area 12 from the imaging unit 20, recognizes the user's key operation from the image information, and outputs key operation information (also referred to as operation information) including the key operation performed by the user. To do.
  • the imaging control unit 42 performs control for causing the imaging unit 20 to image the operation area 12 in accordance with an instruction from the processing unit 41.
  • the imaging control unit 42 outputs image information captured by the imaging unit 20 to the processing unit 41.
  • the projection control unit 43 acquires the display condition and the synchronization condition output by the processing unit 41, and outputs the display condition and the synchronization condition to the projection unit 30.
  • the shutter control unit 44 acquires the synchronization condition output by the processing unit 41 and outputs the synchronization condition to the optical shutter 13.
  • the imaging control unit 42, the projection control unit 43, and the shutter control unit 44 are illustrated as different configurations, but these configurations may be combined.
  • FIG. 15 is a conceptual diagram illustrating an example in which display information is projected onto the operation area 12 by the projecting unit 30 and the image capturing area 12 is imaged by the camera 200 which is the image capturing unit 20.
  • the light emitted from the light source 33 is reflected by the display unit of the spatial modulation element 36 and projected on the operation area 12 as display information.
  • the information input device 10 captures the operation area 12 with the camera 200 and acquires the user's operation for the effective display information.
  • the control unit 40 may acquire the time when the user operation is performed and the position indicated by the operation from the image information captured by the camera 200. If the position indicated by the user's operation and the valid key array are associated with each other at the same time, the information input by the user can be specified.
  • FIG. 16 is a block diagram illustrating a configuration of the processing unit 41.
  • the processing unit 41 includes a key array storage unit 412, a control condition generation unit 413, and an operation information generation unit 415. Each component in FIG. 16 will be described in detail with reference to individual drawings.
  • FIG. 17 is a block diagram showing a configuration of the key array storage unit 412 (also referred to as a display information storage unit).
  • the key array storage unit 412 includes a key array receiver 421, a key array storage unit 422, and a key array output unit 423.
  • the key arrangement receiving unit 421 receives key arrangement information including information relating to the key arrangement and the phase distribution corresponding to the key arrangement from the server 102 constituting the verification system 1.
  • the key array receiving unit 421 may receive only the key array as key array information without receiving the phase distribution corresponding to the key array.
  • the key arrangement storage unit 422 stores the key arrangement information received by the key arrangement reception unit 421.
  • the key layout storage unit 422 may store only the key layout as key layout information.
  • the key arrangement output unit 423 outputs the key arrangement information stored in the key arrangement storage unit 422 to the control condition generation unit 413 in response to a request from the control condition generation unit 413.
  • FIG. 18 is an example of a key layout table 4221 that stores the key layout stored in the key layout storage unit 422.
  • the key array table 4221 stores a plurality of key arrays.
  • the key layout storage unit 422 may store the key layout in a format different from that of the key layout table 4221. In FIG. 18 and the like, a comma “,” is inserted into the key array, but a comma may not be inserted into the actual key array.
  • the key arrangement storage unit 422 stores as many key arrangements as possible. This is because as the number of key arrangements to be prepared increases, the number of dummy key arrangements can be increased, so that it becomes difficult to identify effective key arrangements. However, since the storage capacity of the key array storage unit 422 is also limited, the key array storage unit 422 may be configured to include a minimum number of key arrays that make it difficult to identify effective key arrays.
  • FIG. 19 shows an example of a key arrangement table 4231 including key arrangement information output from the key arrangement output unit 423.
  • the key arrangement table 4231 includes a selection of a number of key arrangements that satisfy the request of the control condition generation unit 413 among the plurality of key arrangements included in the key arrangement table 4221.
  • the key layout output unit 423 may output key layout information in a format different from that of the key layout table 4231.
  • FIG. 20 is a block diagram illustrating a configuration of the control condition generation unit 413.
  • the control condition generation unit 413 includes a key arrangement selection unit 431, an effective key arrangement output unit 432, a pattern storage unit 433, a pattern selection unit 434, a control condition setting unit 435, and a control condition output unit 436.
  • the key array selection unit 431 acquires a plurality of key array information (also referred to as display information) from the key array storage unit 412.
  • the key layout selection unit 431 selects any key layout included in the acquired key layout information as a valid key layout (also referred to as valid display information). For example, as shown in FIG. 21, the key arrangement selection unit 431 generates a key arrangement information table 4311 in which a flag (hereinafter referred to as an effective flag) is added to the selected effective key arrangement.
  • the valid flag of the valid key array is “1”, and the valid flags of the other key arrays are “0”.
  • the key arrangement selection unit 431 may indicate that the key arrangement is an effective key arrangement by another method instead of the table format such as the key arrangement information table 4311.
  • the key arrangement selection unit 431 outputs key arrangement information including the effective key arrangement to the pattern selection unit 434 and outputs the selected effective key arrangement to the effective key arrangement output unit 432. Note that the key arrangement selection unit 431 may output key arrangement information including the effective key arrangement to the effective key arrangement output unit 432.
  • the effective key array output unit 432 (also referred to as an effective display information output unit) acquires the effective key array from the key array selection unit 431, and outputs the effective key array to the operation information generation unit 415.
  • the pattern storage unit 433 stores a pattern to be displayed on the display surface of the spatial modulation element 36.
  • the pattern storage unit 433 stores phase distributions corresponding to a plurality of key arrays.
  • the pattern storage unit 433 may acquire a phase distribution corresponding to each key arrangement from the server 102 or the like in advance.
  • the pattern storage unit 433 preferably stores the phase distribution as digital data.
  • the pattern storage unit 433 stores the phase distribution in the form of a phase distribution table 4331 in which the phase distribution is associated with each key arrangement as shown in FIG. In FIG. 22, not the phase distribution of the display information corresponding to the key arrangement but the display information itself is shown.
  • the pattern storage unit 433 may store the phase distribution in a format different from that of the phase distribution table 4331.
  • the pattern selection unit 434 acquires key arrangement information including an effective key arrangement from the key arrangement selection unit 431, and acquires a phase distribution corresponding to display information corresponding to the acquired key arrangement from the pattern storage unit 433. At this time, the pattern selection unit 434 attaches a valid flag to the phase distribution corresponding to the valid key array to indicate that the phase distribution corresponds to the valid key array.
  • the pattern selection unit 434 generates a phase distribution table 4341 in which the phase distribution is associated with each selected key array as shown in FIG.
  • the pattern selection unit 434 attaches a valid flag to the valid key array.
  • the valid flag of the valid key array is “1”, and the valid flags of the other key arrays are “0”.
  • the pattern selection unit 434 may generate the phase distribution selected in association with each key arrangement including the effective key arrangement in a format different from the phase distribution table 4341.
  • the pattern selection unit 434 outputs the selected phase distribution to the control condition setting unit 435 in association with each key arrangement including the effective key arrangement.
  • the pattern selection unit 434 may output the phase distribution table 4341 when generating the phase distribution table 4341 as shown in FIG.
  • the control condition setting unit 435 acquires the phase distribution associated with each key arrangement including the effective key arrangement from the pattern selection unit 434.
  • the control condition setting unit 435 sets display conditions including the phase distribution corresponding to the display information to be projected on the projection unit 30 and the timing for displaying the phase distribution on the display unit of the spatial modulation element 36.
  • the control condition setting unit 435 outputs the set display condition to the control condition output unit 436.
  • FIG. 24 is a display condition table 4361 as an example of display conditions set by the control condition setting unit 435.
  • the display condition table 4361 is a table that summarizes the phase distributions to be displayed in the display areas of the display unit of the spatial modulation element 36 at a specific time. Note that the phase distribution corresponding to each display area is also stored in the display condition table 4361 other than the time shown in the display condition table 4361.
  • FIG. 25 is a display condition table 4362 as another example of display conditions set by the control condition setting unit 435.
  • the display condition table 4362 is a table in which times for displaying the respective phase distributions are collected with respect to the display area of the display unit of the spatial modulation element 36. Note that the phase distribution corresponding to each time is also stored in the display condition table 4361 outside the display area shown in the display condition table 4362.
  • each phase distribution can be displayed in an appropriate display area in accordance with the display timing.
  • the display condition tables 4361 and 4362 include the key arrangement itself, the key arrangement itself may not be included in the display condition tables 4361 and 4362.
  • control condition setting unit 435 sets a synchronization condition for synchronizing the switching timing of the light emitting unit 330 and the timing of opening the optical shutter 13.
  • the control condition setting unit 435 outputs the set synchronization condition to the control condition output unit 436.
  • the control condition setting unit 435 sets a synchronization condition for opening the optical shutter 13 in synchronization with the timing at which the light emitting unit 330 emits light in the display area where the phase distribution with the valid key flag is displayed.
  • the control condition setting unit 435 sets a condition for opening the optical shutter 13 for a predetermined time in a time range included in the time zone in which the light emitting unit 330 emits light at the position of the phase distribution to which the valid key flag is attached.
  • FIG. 26 is a synchronization condition table 4371 as an example of the synchronization condition set by the control condition setting unit 435.
  • the synchronization condition table 4371 includes a specific time, a light emitting unit 330 operated at that time, and a shutter open flag indicating whether or not to open the optical shutter 13 at that time.
  • the shutter open flag is “1” in the synchronization condition table 4371
  • the optical shutter 13 is controlled to open.
  • the shutter open flag is “1”
  • the optical shutter 13 may be set to be closed when a predetermined time elapses after the optical shutter 13 is opened.
  • the shutter open flag is “0”, it indicates that the optical shutter 13 is kept closed.
  • the light emitting unit A1 is controlled to emit light.
  • the shutter open flag of the synchronization condition table 4371 is “0”
  • the optical shutter 13 remains closed.
  • the time “AA: BB: CC” indicates AA hour BB minute CC second, and the period “.” Or less indicates a time shorter than 1 second.
  • the light emitting unit A4 is controlled to emit light.
  • the shutter open flag of the synchronization condition table 4371 is “1”
  • the optical shutter 13 is controlled to open.
  • the optical shutter 13 may be controlled to open at the same time as the time “AA: BB: CC.000400”, but for a predetermined time (such as time “AA: BB: CC.000410”).
  • the optical shutter 13 may be controlled to open after the first time) has elapsed.
  • the opened optical shutter 13 is set to close when a predetermined time (second time) elapses.
  • the second time is set to a time range included between the time when the shutter opening flag is set to “1” and the next time.
  • the second time is included in the time range (0.0001 seconds) between the time “AA: BB: CC.000400” and the time “AA: BB: CC.000500”.
  • the optical shutter 13 is opened at the time “AA: BB: CC.000410” and the time “AA: BB”. : CC.000490 ”.
  • the phase distribution of the display condition table 4361 is displayed in each display area of the spatial modulation element 36 at time “AA: BB: CC.000100”. Then, in accordance with the time “AA: BB: CC.000100”, the light emitting unit A1 irradiates the display area A1 of the spatial modulation element 36 with the light 340. The light emitting unit 330 is switched every 0.0001 seconds. At time “AA: BB: CC.000400”, the light emitting unit A4 irradiates the display area A4 with light 340. At this time, the optical shutter 13 is opened when the first time has elapsed from the time “AA: BB: CC.000400” and the second time has elapsed from the time “AA: BB: CC.000400”. Closed.
  • the optical shutter 13 is opened. Therefore, since the user views the operation area 12 through the optical shutter 13, the user can recognize an effective key arrangement from a plurality of key arrangements displayed one after another in the operation area 12.
  • FIG. 27 is a conceptual diagram in which the light irradiation timing of the light source 33 is associated with the shutter opening timing of the optical shutter 13.
  • the response of the liquid crystal corresponds to the timing at which the phase distribution is displayed on the display unit of the spatial modulation element 36.
  • a key arrangement is displayed in each display area of the display section of the spatial modulation element 36 as shown in FIG. Note that the images displayed in the display areas in FIG. 12 are actually phase distributions.
  • the plurality of light emitting units 330 of the light source 33 emit light toward a display area corresponding to each light emitting unit 330 under the control of the light source control unit 32.
  • FIG. 27 shows that 15 light emitting units 330 are switched one after another within one liquid crystal response period to emit light.
  • the on / off state of the liquid crystal, the switching of the light emitting unit 330, and the opening timing of the shutter 13 may be constant or may not be constant. In other words, the shutter 13 may be set to open at the timing when the effective key arrangement which is a desired image is displayed in the operation area 12.
  • the shutter control unit 44 controls to open the optical shutter 13 at the timing when the effective key array is irradiated with light on the display area of the spatial modulation element 36 when the 15 light emitting units 330 are switched.
  • the shutter control unit 44 can open the optical shutter 13 at the timing when the effective key array is projected onto the operation area 12 by following the synchronization condition acquired from the control condition generation unit 413.
  • the control condition output unit 436 acquires display conditions and synchronization conditions from the control condition setting unit 435.
  • the control condition output unit 436 outputs a control condition including the acquired display condition and synchronization condition to the projection unit 30.
  • FIG. 28 is a block diagram illustrating a configuration of the operation information generation unit 415.
  • the operation information generation unit 415 includes an image information reception unit 451, an operation content determination unit 452, an effective key array reception unit 453, an effective key array storage unit 454, an operation information generation unit 455, and an operation information output unit 456.
  • the image information receiving unit 451 acquires the image information of the operation area 12 captured by the imaging unit 20.
  • the image information receiving unit 451 outputs the acquired image information to the operation content determination unit 452.
  • the operation content determination unit 452 analyzes the acquired image information and determines the operation content performed by the user in the operation area 12. For example, the operation content determination unit 452 determines the operation position pointed to the operation area 12 by the user at a certain time as the operation content, and generates operation position information in which time information is associated with the determined operation position. That is, the operation content determination unit 452 analyzes the image information captured by the imaging unit 20, determines the operation position instructed by the user to the operation area 12, and determines the time at which the user instructed the operation position and the operation position. Operation position information is generated by associating.
  • the operation content determination unit 452 can convert the determined operation position into coordinates of the orthogonal coordinate system.
  • the origin is set at the vertex of the lower left corner of the operation area 12.
  • Each symbol included in a 4 ⁇ 3 matrix matrix key pattern is projected to an operation position (dashed line) to which numbers 1 to 12 are assigned.
  • the operation position 1 is set within a rectangle having (X1, Y5), (X1, Y4), (X2, Y4), and (X2, Y5) as vertices. Other operation positions are set similarly.
  • the operation content determination unit 452 recognizes that an operation is performed in a rectangle having (X3, Y4), (X3, Y3), (X4, Y3), and (X4, Y4) as vertices at a certain time, It is determined that the operation position 10 is instructed at that time.
  • the operation content determination unit 452 outputs operation position information in which the operation position instructed by the user is associated with time information to the operation information generation unit 455. Note that the operation content determination unit 452 may be configured to output operation position information in which the coordinates of the operation position are associated with time information.
  • the valid key array receiving unit 453 receives the valid key array from the control condition generating unit 413.
  • the valid key array receiving unit 453 stores the received valid key array in the valid key array storage unit 454.
  • the effective key array storage unit 454 stores the received effective key array.
  • the operation information generation unit 455 associates the operation position in the operation area 12 determined by the operation content determination unit 452 with the valid key layout stored in the valid key layout storage unit 454, and performs the key operation performed by the user. Generate information. That is, the operation information generation unit 455 generates key operation information in which the operation position information determined by the operation content determination unit 452 is associated with valid display information.
  • the operation information output unit 456 outputs the key operation information generated by the operation information generation unit 455. For example, when assuming the collation system 1 as illustrated in FIG. 16, the operation information output unit 456 outputs the operation information to the server 102.
  • Each symbol included in the key array is projected to a predetermined position in the operation area 12 by the projection means 30.
  • the first symbol of the key arrangement is projected to the operation position 1
  • the second symbol is projected to the operation position 2,...
  • the fifteenth symbol is projected to the operation position 15.
  • the operation information generation unit 415 specifies the operation position in time series from the user's operation included in the image information, and associates the position where the symbols constituting the effective key array are projected with the operation position, and is input by the user Generate key operation information.
  • Patent Document 1 Japanese Patent No. 4911225 discloses a display system that switches a plurality of display information including effective display information to be recognized by a user at high speed.
  • the system of Patent Document 1 has an optical shutter that opens at the timing when valid display information is displayed. A lot of display information is displayed one after another on the display unit of the system of Patent Document 1. Therefore, a person watching the display unit without passing through the optical shutter recognizes meaningless information in which all display information is synthesized as shown in the left diagram of FIG.
  • the optical shutter opens at the display timing of the effective display information, the user who is looking at the display unit through the optical shutter can recognize the confidential information displayed on the display unit.
  • different display information displayed in different display areas of the spatial modulation element 36 is sequentially projected onto the operation area 12 by switching the plurality of light emitting units 330.
  • 15 types of phase images can be simultaneously written on the display unit of the spatial modulation element 36 by a single liquid crystal response. Therefore, in the present embodiment, switching of display information to be projected onto the operation area 12 is not limited by the response speed of the liquid crystal, and display information can be switched at a higher speed than the system of Patent Document 1.
  • the laser pulse may be set to about 20 microseconds, for example.
  • a MEMS type optical shutter 13 is used, a response of 20 microseconds is possible. If the response speed of the optical shutter 13 is set to 40 microseconds, the apparent operation speed is 25000 fps. In order to capture an image displayed at this operation speed, a camera of the 100,000 fps class is required. This class of high-speed camera is very special and large in size, so it is difficult to use it for peeking at effective display information.
  • the display pattern can be increased by increasing the number of divisions of the display area of the spatial modulation element.
  • the number of display patterns is about 300 to 450. At this level, it becomes difficult to narrow down combinations of user's finger movements and display patterns.
  • the information input device 10 can display 90 types of patterns per frame when writing is performed three times per frame on the display unit of the spatial modulation element 26. If all the patterns are different, the information input device 10 can project 5400 types of patterns in one second onto the operation area 12 in 5 seconds. If there are about 1000 patterns that are generated multiple times including valid display information, even if all the patterns are recorded, it is very many to examine the correspondence between the user's finger movements and patterns. You must try a combination.
  • the information input device of the present embodiment it is difficult to capture the display information with the camera by switching the display information projected onto the operation area at high speed, and the confidentiality of the input information is improved. It becomes possible to improve.
  • the number of display patterns per cycle is significantly increased, so the number of combinations of user operations and display patterns is dramatically increased, and user operations are estimated. It becomes difficult.
  • FIG. 30 is a schematic diagram of an information input device 10-1 according to a modification of the present embodiment.
  • the information input device 10-1 arranges a projection device 381 that projects display information on the back side of the operation area 12.
  • the projection device 381 projects display information onto the operation area 12 from the back side in the direction in which the user looks.
  • a rear type screen may be used for the operation area 12.
  • a mirror surface may be arranged between the projection device 381 and the operation region 12, and the projection direction of the display information by the projection device 381 may be guided to the operation region 12 by the mirror surface.
  • the phase distribution of the key arrangement (also referred to as display information) stored in the pattern storage unit 433 of the control condition generation unit 413 is stored not for each key arrangement but for each symbol constituting the key arrangement.
  • the information input device according to the present embodiment may have the same configuration as the information input device 10 according to the first embodiment.
  • FIG. 31 is an example of a phase distribution table 4342 stored in the information input device according to the present embodiment.
  • the phase distribution table 4342 stores a phase distribution of an image in which each symbol included in the key array is associated with each operation position in the operation area 12.
  • an identification symbol is attached to each phase distribution.
  • the positions of “X” and “#” are fixed at the lower right operation position.
  • the key array corresponding to the phase distribution of the phase distribution table 4342 may be referred to as a partial key array, and the phase distribution corresponding to the partial key array may be referred to as a partial pattern.
  • the phase distribution table 4342 stores 10 partial patterns corresponding to 10 operation positions for each of 10 symbols from 0 to 9. That is, the phase distribution table 4342 stores 100 partial patterns.
  • each partial pattern may be displayed at random in each display area of the spatial modulation element 26.
  • the spatial modulation element 26 may display the partial pattern according to a predetermined rule instead of random.
  • FIG. 32 is a conceptual diagram in which the light irradiation timing of the light source 33 and the timing of opening the shutter of the optical shutter 13 are associated in the present embodiment.
  • a partial key array that forms each symbol of 0 to 9 is selected one by one from the phase distribution displayed on the display unit of the spatial modulation element 26 to configure a key array. Therefore, in the present embodiment, as shown in FIG. 32, the optical shutter 13 may be opened a plurality of times at one writing timing with respect to the spatial modulation element 26.
  • 120 patterns can be written in four writes.
  • the key array is composed of 10 symbols 0 to 9
  • the pattern storage unit 433 stores a partial pattern in which a partial key arrangement in which at least one symbol is arranged among a plurality of symbols arranged in a matrix format is displayed in the operation area 12.
  • the pattern selection unit 434 selects a plurality of partial patterns from the pattern storage unit 433.
  • the control condition setting unit 435 sets a condition for displaying the key arrangement in the operation area 12 as a display condition by displaying a plurality of partial patterns on the display surface of the spatial modulation element 36. At this time, the control condition setting unit 435 sets a condition for opening the optical shutter 13 in accordance with the operation timing of the light emitting unit 330 that irradiates light to the display area where the partial pattern of the partial key arrangement constituting the effective key arrangement is displayed. Set as a synchronization condition.
  • the information input device can dramatically reduce the number of phase distributions of display information to be stored. Therefore, it is possible to reduce the storage area for the information input device to store the phase distribution.
  • the information input device according to the present embodiment has the same configuration as that of the information input device 10 according to the first embodiment, except for the configuration described below.
  • FIG. 33 is a block diagram showing the configuration of the key array storage unit 412-2 of the information input device according to this embodiment.
  • the key array storage unit 412-2 of this embodiment has a configuration in which a key array generation unit 425 is added to the key array storage unit 412 of the first embodiment.
  • the key array generation unit 425 generates a key array to be displayed in the operation area 12. For example, the key arrangement generation unit 425 generates the number of key arrangements according to the request of the control condition generation unit 413. The key array generation unit 425 may generate as many key arrays as the number of key arrays to be projected, or may generate an extra number of key arrays than the number of key arrays to be projected. The key array generation unit 425 outputs the generated key array to the key array reception unit 421.
  • the key arrangement receiving unit 421 transmits the key arrangement generated by the key arrangement generation unit 425 to the server 102 and requests a phase distribution corresponding to the key arrangement.
  • the key arrangement reception unit 421 transmits the phase distribution to the control condition generation unit 413 in association with the key arrangement.
  • the control condition generation unit 413 stores the received phase distribution in the phase distribution storage unit 433 in association with the key arrangement.
  • the number of phase distributions corresponding to the number of key arrays to be projected may be stored in the pattern storage unit 433. Therefore, according to the information input device according to the present embodiment, the storage capacity of the key array storage unit 422 and the pattern storage unit 433 can be reduced.
  • the information input device 10-3 includes a verification unit 50.
  • the collating unit 50 is a unit that collates authentication information of a user who uses the host system of the information input device 10-3.
  • FIG. 35 is a block diagram showing a configuration of the collation means 50 according to the present embodiment.
  • the verification unit 50 includes an operation information acquisition unit 501, an operation information verification unit 502, an authentication information storage unit 503, and a verification result output unit 504.
  • the operation information acquisition unit 501 acquires key operation information from the processing unit 41.
  • the operation information acquisition unit 501 outputs the acquired key operation information to the operation information collation unit 502.
  • the operation information matching unit 502 receives the key operation information from the operation information acquisition unit 501 and acquires the authentication information of the user who has input the received key operation information from the authentication information storage unit 503.
  • the authentication information storage unit 503 stores authentication information of users who use the host system of the information input device 10-3.
  • the operation information collation unit 502 collates the user's key operation included in the input key operation information with the user's authentication information acquired from the authentication information storage unit 503.
  • the operation information collation unit 502 outputs the collation result to the collation result output unit 504.
  • the collation result output unit 504 transmits the collation result to the host system.
  • the information input device can be completed within the device itself, so that delays and failures caused by the network can be avoided.
  • the storage device of the information input device is limited, it is suitable for applications where the number of users is limited.
  • the information input device according to the present embodiment is suitable for authentication or the like used when a registered small number of users enter a specific facility.
  • the computer 90 in FIG. 36 is a configuration example for enabling the information input device according to each embodiment, and does not limit the scope of the present invention.
  • the information input device according to each embodiment may be a microcomputer having the function of the computer 90 of FIG. 36 in the case of the interface device 11 as shown in FIG.
  • the computer 90 includes a processor 91, a main storage device 92, an auxiliary storage device 93, an input / output interface 95, and a communication interface 96.
  • the processor 91, the main storage device 92, the auxiliary storage device 93, the input / output interface 95, and the communication interface 96 are connected to each other via a bus 99 so as to exchange data.
  • the processor 91, the main storage device 92, the auxiliary storage device 93, and the input / output interface 95 are connected to a network such as the Internet or an intranet via a communication interface 96.
  • the computer 90 is connected to a host system server or computer via a network, and receives key layout information and the like from the host system.
  • the processor 91 expands the program stored in the auxiliary storage device 93 or the like in the main storage device 92, and executes the expanded program.
  • a configuration using a software program installed in the computer 90 may be adopted.
  • the processor 91 executes arithmetic processing and control processing of the information input device according to the present embodiment.
  • the main storage device 92 has an area where the program is expanded.
  • the main storage device 92 may be a volatile memory such as a DRAM (Dynamic Random Access Memory). Further, a nonvolatile memory such as MRAM (Magnetoresistive Random Access Memory) may be configured and added as the main storage device 92.
  • DRAM Dynamic Random Access Memory
  • MRAM Magnetic Random Access Memory
  • the auxiliary storage device 93 is means for storing data such as phase distribution of display information and key arrangement.
  • the auxiliary storage device 93 is configured by a local disk such as a hard disk or a flash memory. Note that the phase distribution of display information may be stored in the main storage device 92, and the auxiliary storage device 93 may be omitted.
  • the input / output interface 95 is a device that connects the computer 90 and peripheral devices based on the connection standard between the computer 90 and peripheral devices.
  • the communication interface 96 is an interface for connecting to a network such as the Internet or an intranet based on standards and specifications. In FIG. 36, the interface is abbreviated as I / F (Interface).
  • I / F Interface
  • the input / output interface 95 and the communication interface 96 may be shared as an interface connected to an external device.
  • the computer 90 may be configured so that input devices such as a keyboard, a mouse, and a touch panel can be connected as necessary. These input devices are used for inputting information and settings. Note that when the touch panel is used as an input device, the display unit of the display device may serve as the input unit of the input device. Data exchange between the processor 91 and the input device may be mediated by the input interface 95.
  • the communication interface 96 is connected to a host system such as another computer or server through a network.
  • the host system transmits key arrangement information including the phase distribution of the display information and the key arrangement used in each embodiment of the present invention to the computer 90 via the communication interface 96.
  • the host system may generate the phase distribution of the display information used in each embodiment of the present invention by itself or may acquire it from another device.
  • the computer 90 may be provided with a display device for displaying various information.
  • the computer 90 is preferably provided with a display control device (not shown) for controlling the display of the display device.
  • the display device may be connected to the computer 90 via the input interface 95.
  • the computer 90 may be provided with a reader / writer as necessary.
  • the reader / writer is connected to the bus 99 and reads a data program from the recording medium and writes a processing result of the computer 90 to the recording medium between the processor 91 and a recording medium (program recording medium) (not shown).
  • the recording medium can be realized by a semiconductor recording medium such as an SD (Secure Digital) card or a USB (Universal Serial Bus) memory.
  • the recording medium 516 may be realized by a magnetic recording medium such as a flexible disk, an optical recording medium such as a CD (Compact Disk) and a DVD (Digital Versatile Disk), and other recording media.
  • the above is an example of a hardware configuration for enabling the information input device according to each embodiment of the present invention.
  • the components of the information input device according to each embodiment of the present invention are realized as one function of hardware as shown in FIG.
  • FIG. 36 is an example of a hardware configuration for enabling the information input device according to each embodiment, and does not limit the scope of the present invention.
  • a processing program that causes a computer to execute processing by the information input device according to each embodiment is also included in the scope of the present invention.
  • a program recording medium recording the processing program according to each embodiment is also included in the scope of the present invention.
  • the information input device of the present invention can be used as an input device for a user to input authentication information such as an authentication password in an ATM (Automatic Teller Machine) or an entrance gate. Moreover, the information input device of the present invention can be used as a device for inputting information so that a user is not recognized by a third party.
  • authentication information such as an authentication password in an ATM (Automatic Teller Machine) or an entrance gate.
  • the information input device of the present invention can be used as a device for inputting information so that a user is not recognized by a third party.

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Abstract

L'objectif de l'invention est d'améliorer la confidentialité des informations entrées. Ce dispositif d'entrée d'informations comprend : un moyen de projection qui comprend un élément de modulation spatiale avec une pluralité de zones d'affichage et une source lumineuse comprenant une pluralité de parties émettrices de lumière, et qui projette des informations d'affichage dans une zone de fonctionnement ; un mécanisme d'obturation qui s'ouvre en fonction du moment où les informations d'affichage effectives incluses dans les informations d'affichage sont affichées dans la zone de fonctionnement ; un moyen d'imagerie permettant d'acquérir les détails de fonctionnement dans la zone de fonctionnement en tant qu'informations d'image ; et un moyen de commande permettant de définir des conditions de commande comprenant une condition d'affichage pour afficher un motif permettant d'afficher les informations d'affichage dans la zone de fonctionnement sur la partie d'affichage de l'élément de modulation spatiale et une condition de synchronisation permettant d'apparier le moment de commutation de la pluralité de parties émettrices de lumière et le moment d'ouverture du mécanisme d'obturation tout en générant des informations de fonctionnement dans lesquelles les informations d'image acquises par le moyen d'imagerie correspondent aux informations d'affichage effectives.
PCT/JP2016/002781 2015-06-12 2016-06-08 Dispositif d'entrée d'informations et système d'appariement WO2016199415A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021117403A1 (fr) * 2019-12-12 2021-06-17 Ｎｅｃプラットフォームズ株式会社 Dispositif de transmission de lumière, système de communication et procédé de transmission de lumière

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06110403A (ja) * 1992-09-30 1994-04-22 Hitachi Ltd 表示装置および表示パネル
JP2001255844A (ja) * 2000-01-12 2001-09-21 Internatl Business Mach Corp <Ibm> 公衆が見ることのできるディスプレイでプライベートに見ることができるデータを提供する方法
WO2009022483A1 (fr) * 2007-08-16 2009-02-19 Nec Corporation Système d'affichage et procédé d'affichage
JP2009204948A (ja) * 2008-02-28 2009-09-10 Toshiba Corp 画像表示装置及びその方法
JP2010113568A (ja) * 2008-11-07 2010-05-20 Toyota Infotechnology Center Co Ltd 動作検出装置及びそれを用いた操作システム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06110403A (ja) * 1992-09-30 1994-04-22 Hitachi Ltd 表示装置および表示パネル
JP2001255844A (ja) * 2000-01-12 2001-09-21 Internatl Business Mach Corp <Ibm> 公衆が見ることのできるディスプレイでプライベートに見ることができるデータを提供する方法
WO2009022483A1 (fr) * 2007-08-16 2009-02-19 Nec Corporation Système d'affichage et procédé d'affichage
JP2009204948A (ja) * 2008-02-28 2009-09-10 Toshiba Corp 画像表示装置及びその方法
JP2010113568A (ja) * 2008-11-07 2010-05-20 Toyota Infotechnology Center Co Ltd 動作検出装置及びそれを用いた操作システム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021117403A1 (fr) * 2019-12-12 2021-06-17 Ｎｅｃプラットフォームズ株式会社 Dispositif de transmission de lumière, système de communication et procédé de transmission de lumière
JP2021093663A (ja) * 2019-12-12 2021-06-17 Ｎｅｃプラットフォームズ株式会社 送光装置、通信システム、および送光方法

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