WO2004031834A1 - 認証システム、光放射装置、認証装置および認証方法 - Google Patents
認証システム、光放射装置、認証装置および認証方法 Download PDFInfo
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- WO2004031834A1 WO2004031834A1 PCT/JP2003/012637 JP0312637W WO2004031834A1 WO 2004031834 A1 WO2004031834 A1 WO 2004031834A1 JP 0312637 W JP0312637 W JP 0312637W WO 2004031834 A1 WO2004031834 A1 WO 2004031834A1
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- WIPO (PCT)
- Prior art keywords
- authentication
- image
- optical system
- light
- emitting device
- Prior art date
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Classifications
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- 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
- G06F21/34—User authentication involving the use of external additional devices, e.g. dongles or smart cards
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
- G06K19/14—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by radiation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
- G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/145—Illumination specially adapted for pattern recognition, e.g. using gratings
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/80—Recognising image objects characterised by unique random patterns
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
- G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
- G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
Definitions
- the present invention relates to a completely new authentication system, a light emitting device, an authentication device, and an authentication method for performing authentication by scattering display images. Background technology
- an authentication method an authentication method using an image is known. It is widely used because it can use general-purpose circuits. Here are some of the authentication methods.
- Patent Document 1 Japanese Patent Laid-Open No. 11-145952
- Patent Document 3 Japanese Patent Application Laid-Open No. 2002-2 18049
- Patent Document 4 Japanese Patent Application Laid-Open No. 2000-30771
- an image used for authentication is copied (electrically copied in an information processing device or copied in paper form by a copying machine), and the copied image is misused. Then, there is a drawback that the authentication device cannot detect the abuse.
- the method (2) has the advantage of being convenient, but has the disadvantage that if the dye applied to the card deteriorates over time, the card cannot be used for authentication.
- the authentication method using images has advantages and disadvantages in authentication accuracy and convenience, and improvement thereof is desired.
- a display means for displaying and outputting an image in which authentication information is incorporated, and light of the displayed and output image is scattered at a predetermined angle for each pixel.
- a light emitting device having first optical system means, a second optical system means for collecting light of an image scattered by the light emitting device, and a photoelectric conversion means for performing photoelectric conversion on the collected image
- an authentication device having control means for performing authentication using the photoelectrically converted image.
- an image corresponding to authentication information in an image displayed and output by the display means is scattered, and an image other than the authentication information is displayed in a direction substantially perpendicular to the display screen of the display means.
- An authentication system is provided, wherein the display means and the first optical system means are configured to emit light.
- the present invention provides an authentication system, wherein the authentication system displays and outputs an image from the light emitting device in response to an inquiry from the authentication device.
- the authentication system is characterized in that the first optical system means and the second optical system means are lens arrays using one-dimensional light distribution.
- the first optical system means and the second optical system means are lens arrays using a two-dimensional light distribution. provide.
- the present invention provides the authentication system, wherein the image is a hologram pattern.
- the present invention provides an authentication system, wherein the image is a graphic pattern that does not exhibit a hologram effect.
- the first optical system means is a lens array including a plurality of lenses, and a gap is provided between the plurality of lenses. . ,
- the present invention includes a display unit for displaying and outputting an image in which authentication information is incorporated, and an optical system unit for scattering light of the displayed and output image at a predetermined angle for each pixel.
- a light emitting device is provided.
- an image corresponding to authentication information in an image displayed and output by the display means is scattered, and an image other than the authentication information is substantially perpendicular to a display screen of the display means.
- the light emitting device is characterized in that the display means and the first optical system means are configured to emit light in various directions.
- the present invention provides a light emitting device characterized in that the light emitting device displays and outputs an image from the display means in response to an inquiry from an external device.
- a twelfth aspect provides the light emitting device, wherein the optical system means is a lens array using a one-dimensional light distribution.
- a thirteenth aspect provides the light emitting device according to the light emitting device, wherein the optical system means is a lens array using a two-dimensional light distribution.
- the present invention provides the light emitting device, wherein the image is a hologram pattern.
- the present invention provides the light emitting device, wherein in the light emitting device, the image is a graphic pattern having no hologram effect.
- the optical system means is a lens array including a plurality of lenses, and a gap is provided between the plurality of lenses. Provide a replacement.
- an optical system means for condensing light of an image scattered at a predetermined angle by an external device a photoelectric conversion means for photoelectrically converting the condensed image
- a control unit for performing authentication using the converted image
- the authentication device is characterized in that an image corresponding to the authentication information in the image is scattered and images other than the authentication information are not scattered.
- the nineteenth aspect provides an authentication device, wherein the authentication device makes an inquiry to output the image to the external device.
- the authentication apparatus wherein the optical system means is a lens array using one-dimensional light distribution.
- the present invention provides the authentication apparatus, wherein the optical system means is a lens array using a two-dimensional light distribution.
- the present invention provides the authentication device, wherein the image is a hologram pattern.
- a twenty-third aspect of the present invention provides the authentication device, wherein the image is a graphic pattern that does not exhibit a hologram effect.
- the external device has an optical system for scattering light, and the optical system is a lens array including a plurality of lenses.
- An authentication device characterized by providing a gap between them.
- an image in which the authentication information is incorporated is displayed and output from the display means, and the light of the displayed and output image is set to a predetermined angle for each pixel by the first optical system means.
- the light of the image scattered and scattered by the first optical system means is collected by the second optical system means, the collected image is photoelectrically converted by the photoelectric conversion means, and the photoelectrically converted image is obtained.
- an authentication method characterized in that authentication is performed by control means using the authentication method.
- an image corresponding to the authentication information in the image displayed and output by the display means is scattered, and images other than the authentication information are displayed on the display means.
- An authentication method is provided, wherein the display means and the first optical system means are configured to emit light in a direction substantially perpendicular to a screen.
- the authentication method wherein the image is displayed and output from the display means in response to an inquiry in the authentication method.
- the authentication method wherein the first optical system means and the second optical system means are lens arrays using one-dimensional light distribution. provide.
- the authentication method wherein the first optical system means and the second optical system means are lens arrays using a two-dimensional light distribution. provide.
- a thirtieth aspect provides the authentication method, wherein the image is a hologram pattern.
- the authentication method wherein the image is a graphic pattern that does not exhibit a hologram effect.
- the first optical system means is a lens array including a plurality of lenses, and a gap is provided between the plurality of lenses.
- the first authentication system since the light of the image in which the authentication information is incorporated is scattered, even if a false copy image is presented to the authentication device, the authentication process is not erroneously performed, and the authentication accuracy is improved. This makes it possible to perform well-balanced authentication for convenience and convenience.
- a pattern authentication method that further includes image information having an angular distribution or information using its time change, Authentication with higher security can be realized.
- the second authentication system in addition to the same effect as the first authentication system, it is possible to present an image other than the authentication information from the display means to a person looking at the display means.
- the light emitting device can output an image when an inquiry is made.
- T JP2003 / 012637 Directional communication becomes possible, and power consumption can be reduced.
- the first optical system means and the second optical system means are provided with a lens array using a one-dimensional light distribution.
- the optical system can have a simple configuration.
- the first optical system means and the second optical system means are provided with a lens array using a two-dimensional light distribution. By doing so, security can be further improved.
- a three-dimensional image is given by making the image a hologram pattern, and a viewer of the image is notified of the image content. can do.
- the seventh authentication system in addition to the same effects as those of the first authentication system, by using a graphic pattern that does not exhibit a hologram effect, it is possible to conceal the contents of the image from what is viewed. it can.
- the eighth authentication system in addition to the same effects as in the first authentication system, by providing a gap between the plurality of lenses, it is possible to provide a degree of freedom in the arrangement of the plurality of lenses.
- the same effect as in the first authentication system can be obtained.
- the same effect as the third authentication system can be obtained.
- the same effect as the fifth authentication system can be obtained.
- the same effect as the sixth authentication system can be obtained.
- the same effect as that of the seventh authentication system can be obtained. It is.
- the same effect as the eighth authentication system can be obtained.
- the same effect as in the first authentication system can be obtained.
- the same effect as the second authentication system can be obtained.
- the same effect as the third authentication system can be obtained.
- the same effect as the second authentication system can be obtained.
- the same effect as the fifth authentication system can be obtained.
- FIG. 1 is a block diagram showing an example of the configuration of the embodiment of the present invention.
- FIG. 2 is a sectional view showing a configuration of a radiation angle dependent light emitting device.
- FIG. 3 is a partial cross-sectional view showing a configuration of a radiation angle dependent light emitting device.
- 4 (A) to 4 (C) are perspective views schematically showing examples of optical elements that can be used as a lens array.
- FIG. 5 is a configuration diagram showing a shape of a light receiving array of a radiation angle dependent light detecting unit.
- FIG. 6 is a configuration diagram showing another shape of the array of the radiation angle dependent light detectors.
- FIG. 7 (A) is a perspective view schematically showing the shape of the photodetector of the light receiving array. (B) is a configuration diagram schematically showing another shape of the photodetector of the light receiving array.
- FIG. 8 is a configuration diagram showing another configuration of the radiation angle dependent light detection unit.
- FIG. 9 is a configuration diagram showing still another configuration of the radiation angle dependent light detection unit ⁇ .
- FIG. 10 is a configuration diagram showing still another configuration of the radiation angle dependent light detection unit.
- FIG. 11 is a plan view showing an example of an appearance of a radiation angle dependent light detection unit.
- FIG. 12 is a block diagram showing a circuit configuration of a liquid crystal panel.
- FIG. 13 is a block diagram schematically showing a configuration of a liquid crystal control integrated circuit.
- FIG. 14 is a cross-sectional view showing a mounting example of the liquid crystal control integrated circuit.
- FIG. 15 is a cross-sectional view showing another example of mounting the liquid crystal control integrated circuit.
- FIG. 16 is a configuration diagram schematically showing a configuration of an optical waveguide of the liquid crystal control integrated circuit.
- FIG. 17 is a configuration diagram schematically showing the configuration of another optical waveguide of the liquid crystal control integrated circuit.
- FIG. 18 is a configuration diagram schematically showing the configuration of another optical waveguide of the liquid crystal control integrated circuit. It is.
- FIG. 19 is a sectional view showing an example of a TFT for driving a liquid crystal.
- FIG. 20 is a cross-sectional view showing an example of an MSM structure light receiver that can be used as a light receiving element.
- FIG. 21 is a flowchart showing a processing procedure of the authentication device.
- FIG. 22 is a flowchart showing a processing procedure of the radiation angle dependent light emitting device.
- FIG. 23 is a configuration diagram showing another configuration of the radiation angle dependent light emitting device.
- FIG. 24 is a configuration diagram showing still another configuration of the radiation angle dependent light emitting device. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows an embodiment of an authentication system to which the present invention is applied.
- reference numeral 10 denotes a radiation angle-dependent light emitting device that functions as the light emitting device having the display unit and the first optical system unit, and displays an authentication image in which authentication information is incorporated. Light is scattered and emitted for display. It can also be called an authentication information output device.
- As the authentication information a specific wavelength of light (for example, the luminance value of each of the three primary colors) is used.
- Reference numeral 20 denotes an authentication device, which includes the second optical system unit, the radiation angle dependent light detection unit 22 functioning as the photoelectric conversion unit, and the control unit 23 functioning as the control unit. It has a transmission unit 21.
- the optical response transmitting unit 21 makes an inquiry (also referred to as a request) regarding transmission of an authentication image in which authentication information is incorporated.
- a well-known optical communication device can be used for the optical response transmitting unit 21.
- the radiation angle dependent light detection unit 22 receives the radiation angle dependent light (the authentication image incorporating the authentication information) output from the radiation angle dependent light radiation device 10 and generates an image signal (hereinafter, image data). (Referred to as evening).
- control device 23 various information processing devices that can execute a program, such as a CPU and a personal computer, can be used.
- the control device 23 compares and compares the image data detected by the radiation angle dependent light detection unit 22 with the image data stored in the internal memory in advance by using the authentication program. When a match is obtained, it is determined that the user has passed the authentication, that is, that he / she is the user.
- the determination result is output as an authentication confirmation signal to various devices 30 requiring security, such as a personal computer (PC) and a door.
- the authentication confirmation signal indicates that the authentication has passed, the device 30 performs information processing for permitting use.
- the radiation angle dependent light emitting device 10 will be described more specifically.
- 100 is a liquid crystal panel
- 105 is a liquid crystal panel behind the liquid crystal panel.
- the liquid crystal panel 100 and the rear lighting unit 105 are generally called a liquid crystal display.
- Reference numeral 101 denotes a display screen of the liquid crystal panel 100, that is, a lens array as an optical system means installed on a side where a user views a display, and a liquid crystal in the illumination light of the rear illumination unit 100. The light passing through the panel 100 is scattered.
- Reference numerals 103 and 104 denote pixels of the liquid crystal panel 100.
- the illumination light passes through or is blocked by opening and closing the pixels 103 and 1 ° 4.
- Light output from a predetermined specific pixel position is input to a pixel at a specific position of a radiation angle dependent detection unit 22 described later.
- an image pattern for a person to observe characters and pictures from the front is displayed immediately below the center of each lens 102 of the lens array 101, that is, the image pattern is displayed on the display screen.
- Pixel 103 for emitting light in a direction a substantially perpendicular to the plane (see FIG. 3) is arranged.
- Pixels 104 for displaying an image pattern with an observation angle dependency are provided immediately below the periphery of each lens 102 of the lens array 101, that is, at a position off the center. Are located.
- the focal length of each lens 102 and the distance from the liquid crystal panel 100 are adjusted so that the focal point matches each pixel.
- Pixels 104 directly below the left and right peripheral portions of each lens 102 are, as shown in FIG. 3, pixels b1 for emitting light in the direction b1 and pixels b1 for emitting light in the direction b2. From two 7 The lens array 10 is so arranged that the light emitted from the pixels b 1 and b 2 is not emitted at angles other than the directions b 1 and b 2 by being incident on the adjacent lens 102 instead of the lens 102 immediately above.
- a light-shielding layer 106 is also provided between the lenses 102 of the first lens.
- the light-shielding layer 106 can be omitted when light from a pixel in a direction other than the most desired direction, for example, stray light is actively used.
- the emission angle dependent light emitting device 10 is a liquid crystal display device capable of emitting the emission angle dependent light.
- the lens array 101 has a cylindrical lens array in which a plurality of plano-convex cylindrical lenses are continuously arranged as shown in FIG. 4 (A), and a plurality of lenses as shown in FIG. 4 (B).
- each lens and each liquid crystal pixel are arranged with their positions adjusted as described above.
- the radiation angle dependent light detection section 22 of the authentication device 20 has a light radiation pattern having an angular distribution, that is, an image pattern.
- a circuit for receiving an image signal is indispensable, and as the circuit, for example, a light receiving array including a plurality of light receiving units having directivity may be used.
- the individual receiver array It is sufficient to arrange the receivers in one dimension, that is, in a line, and to receive the light. If the distribution of the angle-dependent light of the emitted light is distributed in two dimensions using a two-dimensional lens array or the like, In this case, the individual light receivers may be arranged two-dimensionally, that is, arranged in a plurality of rows for reception. Of course, even if the synchrotron radiation distribution is two-dimensional, if authentication is performed using only the one-dimensional distribution, a one-dimensional arrangement can be used.
- each of the light receivers 201 of the light receiver array 200 is arranged in an arc as shown in FIG. May be 2003/012637 If the light receivers 201 do not interfere with each other, they may be arranged linearly as shown in FIG. Further, a gap may be provided between the light receivers 201. With such an arrangement, the receiver array 200 itself has directivity.
- a photodetector 203 equipped with a collimated lens 202 as shown in FIG. 7 (A) or a photodetector 203 as shown in FIG. 7 (B) It is possible to take into account photodetection such as collimating lens 2 ⁇ 2 integrated and molded.
- FIGS. 8 and 9 show an arrangement in which an image pickup device 204 is arranged near the focal position by using an optical system composed of a spherical convex lens 205. According to this, a pattern similar to the above is obtained. Can be obtained. However, since a perfect spherical convex lens is not an e- ⁇ lens, a pattern in which an image pattern is superimposed is displayed on the imaging surface. However, this does not reduce the authentication performance, and it is expected that the recognition accuracy will be further improved by performing authentication using the angle-dependent intensity pattern including the image pattern at the time of registration. '
- FIG. 10 shows a mode in which a convex lens array composed of a plurality of spherical convex lenses 206 is used as an optical system, and light is received by an image sensor 204 provided near the focal position of each spherical convex lens 206.
- the sum of the radiated light intensities from all the pixels is received through one spherical convex lens 205, while in FIG. 10, it is received through each spherical convex lens 206 of the convex lens array.
- the number of lenses in the convex lens array does not need to be the same as the number of lenses in the lens array 101 in the radiation angle-dependent light emitting device 10 and can receive the total radiation pattern including some pixels. Should be fine.
- the lens of the convex lens array has a diameter that allows the displacement of the radiation angle-dependent light emitting device 10 to be tolerated, that is, a diameter that allows the placement error of the lens array 101 to be allowed, for example, about three times the horizontal placement error.
- the diameter may be larger than the above.
- the radiation angle dependent light emitting device 10 and the authentication device 20 transmit and receive radiation, that is, an image, for authentication, and this transmission and reception is performed in response to transmission and reception of an inquiry signal between the two devices.
- the system can be configured. This is performed via the optical response transmitting unit 21 in FIG. 1 and a light receiving circuit described later. As a result, the emission angle dependent light emission device 10 and Two-way communication with the authentication device 20 is realized.
- the inquiry signal be an optical signal from the viewpoint of maintaining confidentiality. Of course, weak radio wave communication may be used.
- FIG. 11 shows an example of the appearance of the radiation angle dependent light emitting device 10.
- reference numeral 300 denotes a liquid crystal panel forming the front surface of the radiation angle dependent light emitting device 10.
- Reference numeral 301 denotes a liquid crystal display unit for displaying an image in which the above-mentioned lens array 101 is arranged on a partial screen surface of the liquid crystal panel 300 and capable of emitting radiation angle-dependent light.
- Reference numeral 302 denotes another liquid crystal display unit similar to the conventional one in which the lens array 101 is not provided.
- the liquid crystal display unit is used for displaying characters.
- Reference numeral 303 denotes a liquid crystal control integrated circuit, which is built in the radiation angle dependent light emitting device 10.
- the liquid crystal control integrated circuit 303 will be described later in detail.
- Reference numeral 304 denotes a liquid crystal driving gate driver chip for driving the liquid crystal of the liquid crystal panel 300, which is also built in the radiation angle dependent light emitting device 10.
- Known techniques can be used for the liquid crystal driving gate driver chip 304.
- a chip-on-chip is mounted on a glass liquid crystal panel. It is often implemented using glass technology, and may be integrated into a liquid crystal control integrated circuit chip or implemented as a separate chip. In the example of FIG. 11, it is mounted on the side of the surface of the liquid crystal panel 300 by the chip-on-glass technique.
- the liquid crystal control integrated circuit 303 chip is mounted below the surface using chip-on-glass technology.
- Reference numeral 3505 denotes a light receiving circuit for receiving an inquiry signal (see FIG. 1) sent from the optical response transmitting section 21 of the authentication device 20.
- the light receiving circuit is incorporated in the liquid crystal control integrated circuit 303. Therefore, they are integrated on the same chip to reduce the mounting cost of the circuit.
- a photodetector can be used for the light receiving circuit 305. It is also possible to use an optical transmission / reception module such as IrDA that applies photodetection, or a known light-receiving element that adjusts the brightness of the screen according to the ambient brightness.
- the mounting position may be appropriately determined in consideration of the arrangement with the liquid crystal display units 301 and 302.
- the liquid crystal display itself can be used for the light receiving circuit 305. In this mode, optical axis alignment for realizing bidirectional communication with the authentication device 20, that is, reception of an inquiry signal and transmission of an image as a response signal to the inquiry signal is facilitated.
- FIG. 12 shows an example of an electric circuit configuration of the liquid crystal panel 300 (405 in this figure).
- reference numeral 400 denotes a key input circuit for inputting information.
- Reference numeral 401 denotes an LED output circuit that indicates that power is on.
- Reference numeral 403 denotes a processor having a CPU and a ROM storing a control program.
- Reference numeral 402 denotes an arithmetic processing memory for storing input / output data for the processor 403.
- Reference numeral 404 denotes a display for storing an image data for displaying an image incorporating characters and authentication information to be displayed on the liquid crystal panel 405 in a bitmap format, that is, a color data for each pixel. Memory.
- Reference numeral 406 denotes a liquid crystal drive gate driver (corresponding to 304 in FIG. 11), which drives liquid crystal elements corresponding to individual pixels of the liquid crystal panel 405 based on the image data. .
- Reference numeral 407 denotes a liquid crystal control integrated circuit that reads the image data from the display memory 404 and transfers the read image data to the liquid crystal drive gate driver 406.
- Reference numeral 408 denotes a light receiving circuit (corresponding to 305 in FIG. 11).
- FIG. 13 schematically shows a more specific configuration example of the liquid crystal control integrated circuits 303 and 407 and the light receiving circuits 300 and 408 of FIGS. 11 and 12. Things.
- reference numeral 508 denotes a light receiving circuit unit, which receives an inquiry signal light (see FIG. 1) sent from the optical response transmitting unit 21 of the authentication device 20 and photoelectrically converts it into an electric signal. And the following circuit.
- Bias voltage for photodetector 509 A bias voltage generating circuit for generating 5 0 1.
- a signal level adjusting circuit 502 for adjusting the level of the electric signal photoelectrically converted by the light receiving element 509;
- a signal buffer latch circuit 503 for latching or holding the electric signal.
- a noise removing circuit 505 for removing noise from the signal output from the light receiving element 509.
- An operation control circuit 504 for controlling the operation of the above-described constituent circuit.
- Reference numeral 507 denotes a liquid crystal control integrated circuit for controlling the liquid crystal display units 301 and 302 shown in FIG.
- Reference numeral 506 denotes a liquid crystal control integrated circuit chip in which these circuits are integrated.
- the light receiving circuit portion 508 shown in FIG. 13 is provided at one end of the chip. May be arranged.
- the incident light can be converted into an electric signal, so that a photodetector such as a photodiode or a phototransistor having a PN junction can be used.
- a photodetector such as a photodiode or a phototransistor having a PN junction
- pin photodiodes and avalanche photodiodes can also be used.
- a photoconductive element whose resistance value changes when light enters and a photovoltaic element such as a so-called solar cell which generates a voltage can be used.
- active elements such as FETs are arranged on the liquid crystal screen.
- the light receiving elements can be arranged as shown in FIGS. It can be arranged on a liquid crystal display, not on a liquid crystal control integrated circuit chip as exemplified in FIG.
- elements that receive these lights and convert them into electrical signals are collectively called light receiving elements.
- a bias voltage having an appropriate value necessary for the operation of the light receiving element 509 is supplied from the bias voltage generating circuit 501 to the light receiving element 509.
- the bias voltage generation circuit 501 can be omitted.
- the electric signal generated by the incident of the inquiry signal light (see FIG. 1) from the authentication device 20 at the light receiving element 509 passes through the noise removal circuit 505 to the signal level adjustment circuit 502. In this case, the voltage and the time width are adjusted so that digital signal processing can be performed.
- This digital message The signal is temporarily held in the signal buffer latch circuit 503, and is input to the processor 403 in FIG. 12 as an inquiry signal from the authentication device 20.
- the above operation is controlled by the operation control circuit 50.
- the control by the operation control circuit 504 may be performed by a processor of another chip which is not on one chip.
- FIG. 14 shows a cross section of an example of mounting a liquid crystal panel and a liquid crystal control integrated circuit chip 506 in which the light receiving circuit section 508 is integrated.
- a liquid crystal control integrated circuit chip 601 having a light receiving function in which light receiving elements 602 are integrated, an optical waveguide element 603, and a lens array 604 are arranged.
- the lens array 604 is used to increase the intensity of incident light on the light receiving element 602 and to make the incident light sensitivity directionally dependent, that is, to have a predetermined radiation angle.
- This arrangement can utilize chip-on-glass (COG) technology. More specifically, for example, ball type surface mounting methods such as P-BGA, P-FB GAs T-BGAFC-BGA, FP-BGA, gull wing 'lead' type SOP, SS OP, TS SOP, TS0P 1 , TSOP2, QFP, fine pitch QFP and TZLQFP, and lead type surface mount methods such as J-lead 'type SOJ and QFJ, and packages of various shapes depending on the number of wires required by the chip. Can be considered.
- COG chip-on-glass
- a BGA ball type surface mounting method is adopted. After a transparent electrode 605 is formed on a liquid crystal panel 600, a solder ball 607 is provided on the transparent electrode 605 via a mounting pad 606. The LCD control integrated circuit chip 6001 is supported and mounted. An optical waveguide element 603 is placed in the gap between the liquid crystal panel 600 and the liquid crystal control integrated circuit chip 601, and is held and fixed from both sides by mount pads 608 and solder 609. At this time, for example, a solder paste of 150 ⁇ m is applied on the mounting pad 605, and a solder ball 606 of 0.6 mm ⁇ 0.1 mm is applied. 12637 In the case of the used 25-pin BGA, the height after the riff is about 350-400 microns. Therefore, in this case, the thickness of the optical waveguide element 603 needs to be about 300 ⁇ m.
- FIG. 15 shows another example of mounting the liquid crystal control integrated circuit chip 600 and the liquid crystal panel 600.
- the liquid crystal control integrated circuit chip 600 is arranged on the back of the liquid crystal panel 600, and the incident inquiry signal light is introduced from the lens array 604 to the chip through the liquid crystal panel 600. It has become something. According to this, the optical waveguide element 603 (see FIG. 14) becomes unnecessary. In this case, the pixel of the liquid crystal panel 60 ° can generate 0 NZO FF of the incident signal light, so if you do not want to receive the signal, close the shutter of the liquid crystal element or narrow down the aperture. Adjustment function can be provided. This incident light intensity control may be performed by one pixel or by a plurality of pixels.
- reference numeral 611 denotes an incident light intensity control pixel.
- FIG. 16 schematically shows a more specific configuration of the optical waveguide element 603 in FIG. 14 described above.
- the optical waveguide element 603 changes the direction of the inquiry signal light incident from above (or forward), emits it upward again, and makes it incident on the light receiving element 602.
- Two mirror portions 603 a and 603 b are provided as incident mirrors and outgoing mirrors on both sides in the waveguide in opposite directions.
- the back surface of the optical waveguide element 603 is covered with a metal film 603c.
- the metal film 603 c increases the light reflectance on the back of the optical waveguide element 603 (referred to as a reflection function), and does not pick up light emitted from the liquid crystal panel 60 ° as a noise light signal.
- a light-shielding function (Referred to as a light-shielding function), and also has a role as a solder mounting pad on the optical waveguide element side when the liquid crystal panel 600 is fixed.
- the optical waveguide element 603 is fixed with an adhesive or a pressure-sensitive adhesive, the third role is not used.
- FIG. 17 shows another embodiment of the optical waveguide element 603.
- the above-mentioned reflecting mirror section 603 a, 6 The area of 0 3 b may not be sufficient.
- the reflecting portions 60 3 d, 6 having a plurality of triangular cross-sections having angles 0 and 0 of less than 45 degrees are provided on the inner surface of the waveguide of the optical waveguide device 63. If 0 e is provided, incident light can be introduced into the light receiving element 602 with high efficiency.
- a first reflecting portion 60 having a plurality of triangular cross-sections having an angle ⁇ ⁇ of less than 45 degrees is provided on the rear surface of the waveguide on the incident side of the optical waveguide element 63.
- a second reflector 603 e having a plurality of triangular cross-sections having an angle ⁇ of less than 45 degrees is provided on the inner surface of the waveguide on the emission side of the element 603.
- the light collection efficiency enhancement effect due to the reflection in the light reflection film 6 0 3 f also obtained, than the case of providing a 4 5 degree reflection mirror surface portion 6 0 3 a 3 6 0 3 b of the first 6 Figure Light can be made incident on the light receiving element 60 2 (see FIG. 14) with even higher efficiency.
- the light reflecting film 603 f can be formed by vapor deposition of a metal or a dielectric.
- the light reflecting film 603 f can be omitted as long as a sufficient incident light intensity can be obtained in the light receiving element 602.
- FIG. 18 shows still another embodiment of the optical waveguide element 603.
- light is scattered by providing regular or irregular asperities such as a diffraction grating on the back surface inside the waveguide of the optical waveguide element 603 to reduce the amount of scattered light.
- the part can be guided to the light receiving element 602. In this case, the angle and need not necessarily be less than 45 degrees unless very high efficiency is required.
- the light reflecting film 603 as it is, the first reflecting portion 603 g on the incident side and the second reflecting portion 603 h on the emitting side are left as they are. Each has scattering irregularities.
- the optical waveguide element 603 itself is preferably made of glass or a high heat-resistant transparent polymer material that can withstand the soldering temperature of the liquid crystal control integrated circuit chip 601 (see FIG. 14).
- the light receiving element 62 is replaced with the liquid crystal control integrated circuit chip 60.
- FIG. 19 shows an example of a TFT for driving a liquid crystal.
- 700 is a liquid crystal panel glass
- 701 is a semiconductor
- 702 is a drain electrode
- 703 is a source electrode
- 704 is a gate electrode
- 705 is a gate insulator
- 706 is a metal oxide film
- 08 is a liquid crystal drive electrode.
- Semiconductor 701 can be amorphous silicon, polysilicon, single crystal silicon, single crystal silicon, etc.
- a light receiving element can be formed by forming a light receiver having an MSM (meta1-semicondcutor-metal: metal-semiconductor-metal) structure.
- MSM metal-semiconductor-metal
- reference numeral 800 denotes a liquid crystal panel glass, 801 a semiconductor, 802 a first electrode, 803 a second electrode, 804 an insulator, and 805 a light-shielding / reflective layer.
- the light-shielding reflective layer 805 provided below the semiconductor 801 forming the light receiving element prevents light from entering from the back of the liquid crystal panel and absorbs the incident interrogation signal light by the semiconductor 801. It has the function of reflecting light that did not exist and increasing photoelectric conversion efficiency.
- the material of the light-shielding reflective layer 805 is a gate electrode (70 in FIG. 19).
- the light receiving element is not limited to the MSM structure, and various light receiving element structures such as a pn or p-i-n structure can be used.
- amorphous silicon, polysilicon, single crystal silicon, single crystal silicon, and the like can be considered as in the case of the above-described liquid crystal driving transistor.
- the size and volume of the semiconductor in the light receiving region may be increased or the doping amount may be changed.
- the element dimensions of the semiconductor for driving the liquid crystal pixels are different.
- FIG. 21 shows the processing contents of the control program executed by the CPU in the control device 23 of the authentication device 20.
- FIG. 22 shows the processing contents of the control program executed by the CPU (for example, processor 403 in FIG. 12) in the emission angle light emitting device 10.
- an inquiry signal is issued from the optical response transmission unit 21 of the authentication device 20 to the radiation angle dependent light emission device 10 held by the person to be authenticated (step S100 in FIG. 21).
- a weak radio wave may be used for this signal
- an optical signal that can maintain high confidentiality is used here from the viewpoint of security.
- the radiation angle-dependent light emitting device 10 that has detected this inquiry signal (for example, the light receiving circuits 30 5 and 4 08 in FIGS. 11 and 12) (step S 2 10 in FIG. 22)
- the color data to be used for authentication, its position, and the image are read from the internal memory (for example, the arithmetic processing memory 402 in FIG. 12) (steps S210 to S220 in FIG. 22). ),
- An authentication image incorporating the password information is created on an internal memory (for example, the display memory 404 in FIG. 12). Subsequently, the created authentication image is displayed on a liquid crystal panel (for example, 100 in FIG. 2) (step S240 in FIG. 22).
- the light of the authentication image that is, an angle-dependent light pattern
- the lens array eg. 101 in FIG. 2
- the liquid crystal panel eg. 11
- a liquid crystal display section 301 for displaying an image on the liquid crystal panel 300 is scattered from the lens array (eg, 101 in FIG. 2) on the liquid crystal panel (eg, FIG. 11).
- the control device 23 includes a radiation angle dependent light detection unit 22 (for example, a photodetector array 200 in FIGS. 5 and 6, an imaging device 204 and spherical convex lenses 205 and 2 in FIGS. 8 to 10).
- a radiation angle dependent light detection unit 22 for example, a photodetector array 200 in FIGS. 5 and 6, an imaging device 204 and spherical convex lenses 205 and 2 in FIGS. 8 to 10.
- step 6 when the above light is received (step S110 in Fig. 21), the image obtained by photoelectric conversion 3 012637 Performs authentication processing by extracting color data at a plurality of specific pixel positions in image data and comparing it with a predetermined color data at the same time (CPU in control device 23). (Step S120 in FIG. 21).
- the CPU of the control device 23 outputs the presence or absence of a match to the device 30 as an authentication confirmation signal.
- this signal indicates an authentication match
- the various devices 30 that have received the signal start driving or become operable (for example, opening of the door / accepting input of a personal computer).
- the above authentication processing is performed by comparing patterns of different or same who and responses until an authentication match is obtained.
- the pattern referred to here includes both angle-dependent radiation patterns and time-series signals. If the authentication is successful, access to the device 30 requiring security is permitted.
- FIG. 23 shows another configuration of the radiation angle dependent light emitting device.
- a pixel a 1 for displaying the front of the screen (direction a 1) is disposed immediately below the center of each lens 102 constituting the lens array 101, and the pixels are sequentially shifted sideways from there.
- Pixels a 2, a 3, b 1, and b 2 are arranged for display in the directions a 2, a 3, 1, and b 2 at the respective positions.
- These pixels a 2, a 3, b 1, b 2 can also be used for authentication using an image having angle dependence.
- a pixel capable of displaying a specific direction for example, if it is desired to be able to read from only the front direction, the pixel a 1 immediately below the center of the lens
- FIG. 24 shows still another configuration of the radiation angle dependent light emitting device.
- a pixel a for display in front of the screen (direction a) is disposed immediately below the center of each lens 102 constituting the lens array 101, and a light shielding layer 106 is interposed therebetween.
- a pixel b for authentication is arranged at a position straddling the peripheral portions of the adjacent lenses. In this case, when viewing the screen from the front, the display of the pixel a can be seen, and the sum of the transmitted light intensities from the pixel b is emitted in the direction + b and the direction b.
- the light receiving element of the authentication device 20 is purely PC orchid 00 back 2637
- the intensity of direction + b and that of direction 1b are the same, but when receiving light that depends not only on the direction but also on the position, or If there is no lens boundary at the center of the resulting pixel b, the intensity will be different.
- the non-uniformity of these strengths can be used as a key for authentication of unique individual differences.
- a hologram pattern can be displayed on the liquid crystal panel itself to emit a pattern depending on a desired angle.
- the optical system on the side of the radiation angle dependent light emitting device 10 (the lens array 101 in FIGS. 23 and 24) and the image are arranged in a suitable form corresponding to the hologram pattern. What is necessary is just to comprise. If there is no need to output a hologram pattern, a graphic icon that does not produce a hologram effect may be displayed and output.
- a hologram is preferable when an image displayed on the liquid crystal panel is to be recognized by a viewer of the screen, and a graphic pattern is suitable for preventing the user from knowing what is being displayed.
- the content of the authentication image may be changed in time series.
- only the authentication information to be embedded may be changed.
- the authentication image or the authentication information built in may be changed according to the person to be authenticated.
- this embodiment is applicable to electronic systems that require various types of authentication, in addition to doors and personal computers.
- the communication between the optical response transmitting unit 21 as the inquiry means and the radiation angle dependent light emitting device 10 can employ a communication method other than light, for example, a radio wave or a wire.
- the radiation angle dependent light emitting device 10 As the radiation angle dependent light emitting device 10, existing electronic devices, for example, electronic devices having a display (especially a liquid crystal display) such as a mobile phone and a portable terminal can be used. In this case, an optical system for scattering the display image may be removably attached so that when authentication is performed, an image incorporating authentication information may be output.
- a display especially a liquid crystal display
- an optical system for scattering the display image may be removably attached so that when authentication is performed, an image incorporating authentication information may be output.
- the content of the image incorporating the authentication information can be various, such as a design, a photograph, an illustration, a pattern, and characters.
- the images do not need to be fixed, 12637 It may be changed.
- the radiation angle dependent light emitting device 10 can transmit its own radio wave or optical signal, or can be illuminated by backlight.
- the response signal that is, the transmission of the information, can be transmitted to the radiation angle dependent light detection unit 22 without using the liquid crystal image display means. According to this, it is possible to reduce the radiation of radio waves from the radiation angle-dependent light emitting device 10 to the outside at the time of authentication, thereby further improving security by preventing eavesdropping and reducing the power consumption of the information terminal itself Can be reduced.
- authentication is not simply based on one-dimensional or two-dimensional images, but is a completely new method of using angle-dependent distribution, and has a good balance between authentication accuracy and convenience.
- An authentication system, a light emitting device, an authentication device, and an authentication method capable of performing the authentication are provided.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Software Systems (AREA)
- General Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Artificial Intelligence (AREA)
- Image Input (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Liquid Crystal (AREA)
- Collating Specific Patterns (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/529,882 US20060095773A1 (en) | 2002-10-03 | 2003-10-02 | Authentication system, light emitting device, authentication device and authentication method |
AU2003272915A AU2003272915A1 (en) | 2002-10-03 | 2003-10-02 | Authentication system, light radiation device, authentication device and authentication method |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-290818 | 2002-10-03 | ||
JP2002290818 | 2002-10-03 | ||
JP2003295077A JP4238356B2 (ja) | 2002-10-03 | 2003-08-19 | 認証システム、光放射装置、認証装置および認証方法 |
JP2003-295077 | 2003-08-19 |
Publications (1)
Publication Number | Publication Date |
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WO2004031834A1 true WO2004031834A1 (ja) | 2004-04-15 |
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PCT/JP2003/012637 WO2004031834A1 (ja) | 2002-10-03 | 2003-10-02 | 認証システム、光放射装置、認証装置および認証方法 |
Country Status (5)
Country | Link |
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US (1) | US20060095773A1 (ja) |
JP (1) | JP4238356B2 (ja) |
KR (1) | KR100780338B1 (ja) |
AU (1) | AU2003272915A1 (ja) |
WO (1) | WO2004031834A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007046018A1 (en) * | 2005-10-17 | 2007-04-26 | Koninklijke Philips Electronics N.V. | Integrated physical unclonable function (puf) with combined sensor and display |
WO2007046037A1 (en) * | 2005-10-17 | 2007-04-26 | Koninklijke Philips Electronics N.V. | Integrated puf |
Families Citing this family (10)
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JP4616559B2 (ja) * | 2004-01-15 | 2011-01-19 | 大日本印刷株式会社 | 表示装置及び表示システム |
JP4215002B2 (ja) * | 2005-02-01 | 2009-01-28 | セイコーエプソン株式会社 | 画像送受信システム及び画像受信装置並びにプリンタ装置 |
WO2010002170A2 (en) * | 2008-06-30 | 2010-01-07 | Hantherm Co., Ltd. | Selective radio frequency (rf) identification tag using photo signals and method of implementing the same |
EP2693685B1 (en) | 2012-07-30 | 2017-09-06 | Universiteit Twente | Quantum secure device, system and method for verifying challenge-response pairs using a physically unclonable function (PUF) |
KR101865448B1 (ko) * | 2015-05-14 | 2018-06-07 | 염석환 | 스마트 단말기의 후레쉬를 이용한 인증시스템 및 방법 |
US10019565B2 (en) | 2015-12-17 | 2018-07-10 | Honeywell Federal Manufacturing & Technologies, Llc | Method of authenticating integrated circuits using optical characteristics of physically unclonable functions |
CN108241830A (zh) * | 2016-12-23 | 2018-07-03 | 创智能科技股份有限公司 | 生物特征辨识装置 |
GR20170100352A (el) | 2017-07-26 | 2019-04-04 | Eulambia Advanced Technologies Μον. Επε | Οπτικη φυσικη μη κλωνοποιησιμη συναρτηση βασισμενη σε πολυτροπο οπτικο κυματοδηγο |
CN108387955B (zh) * | 2018-03-27 | 2024-02-27 | 张家港康得新光电材料有限公司 | 一种防窥透镜、防窥装置及显示装置 |
GR20210100723A (el) | 2021-10-21 | 2023-05-10 | Eulambia Advanced Technologies Μονοπροσωπη Επε, | Συστημα αυθεντικοποιησης και μεθοδος αυθεντικοποιησης |
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JP2001108955A (ja) * | 1999-10-07 | 2001-04-20 | Fuji Xerox Co Ltd | 画像記録媒体及び画像記録装置 |
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CN1142267A (zh) * | 1994-02-28 | 1997-02-05 | 米高技术有限公司 | 衍射表面及其制作方法 |
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DE19961841A1 (de) * | 1999-12-21 | 2001-06-28 | Joergen Brosow | Fälschungssicheres Informationsträgermaterial, daraus hergestellter Informationsträger und Vorrichtung zu dessen Prüfung |
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2003
- 2003-08-19 JP JP2003295077A patent/JP4238356B2/ja not_active Expired - Lifetime
- 2003-10-02 WO PCT/JP2003/012637 patent/WO2004031834A1/ja active Application Filing
- 2003-10-02 KR KR1020057005817A patent/KR100780338B1/ko not_active Expired - Fee Related
- 2003-10-02 AU AU2003272915A patent/AU2003272915A1/en not_active Abandoned
- 2003-10-02 US US10/529,882 patent/US20060095773A1/en not_active Abandoned
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JP2001108955A (ja) * | 1999-10-07 | 2001-04-20 | Fuji Xerox Co Ltd | 画像記録媒体及び画像記録装置 |
WO2001063341A1 (en) * | 2000-02-22 | 2001-08-30 | 3M Innovative Properties Company | Sheeting with composite image that floats |
Cited By (2)
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WO2007046018A1 (en) * | 2005-10-17 | 2007-04-26 | Koninklijke Philips Electronics N.V. | Integrated physical unclonable function (puf) with combined sensor and display |
WO2007046037A1 (en) * | 2005-10-17 | 2007-04-26 | Koninklijke Philips Electronics N.V. | Integrated puf |
Also Published As
Publication number | Publication date |
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JP4238356B2 (ja) | 2009-03-18 |
KR20050073471A (ko) | 2005-07-13 |
JP2004147297A (ja) | 2004-05-20 |
US20060095773A1 (en) | 2006-05-04 |
AU2003272915A1 (en) | 2004-04-23 |
KR100780338B1 (ko) | 2007-11-29 |
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