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| Number | Title | Issue Date |
| 8141782 | Dual-use media card connector for backwards compatible holographic media card A card connector which can interchangeably couple a holographic memory card or an electronic memory card to a card reader and/or writer which can then read and/or write to the coupled holographic memory card or electronic memory card. The card connector comprises: a... | 03/27/2012 |
| 7407101 | Card with enhanced security features A card embodying the invention includes marks which are randomly formed within a dedicated region of the surface of the card. The randomly formed marks may, for example, include; (a) partial-holes extending a short distance from a surface of the card; (b) through-ho... | 08/05/2008 |
| 7391911 | Method and apparatus for compressing holographic data An apparatus for compressing holographic data includes an image capture device for capturing an image of an interference pattern reconstructed by irradiating a reference beam and converting the image into m bits. In such an apparatus, a splitter removes least signif... | 06/24/2008 |
| 7353994 | Security, identification and verification systems A method of operating a security system includes making a plurality of security tags, each of which includes a plurality of particles randomly distributed in a light-transmitting matrix, providing a reader which includes means for causing light of one or more wavele... | 04/08/2008 |
| 7317814 | Authentication system and method An authentication system using a correlator that correlates an input with a reference wherein at least one of the input and reference comprises a phase volume mask having structures, preferably points, that are each less than about six microns in size and can have a... | 01/08/2008 |
| 7305117 | Methods and tangible objects employing machine readable data The present invention relates generally to steganography. In one implementation we provide a method comprising: receiving optical scan data representing at least a portion of a physical object. The physical object includes information steganographically hidden there... | 12/04/2007 |
| 7303127 | Packaged memory devices with various unique physical appearances Surface optical characteristics, alpha-numeric markings and other design features of memory cards, flash drives and similar devices combine to provide the devices with unique outer appearances. In one example, markings are held a distance from a reflective surface s... | 12/04/2007 |
| 7300695 | Alignable diffractive pigment flakes Diffractive pigment flakes are selectively aligned to form an image. In one embodiment, flakes having a magnetic layer are shaped to facilitate alignment in a magnetic field. In another embodiment, the flakes include a magnetically discontinuous layer. In a particul... | 11/27/2007 |
| 7289084 | Computer display apparatus A computer display apparatus includes first and second display units operatively coupled to a display controller. The display controller receives imaging instructions for images and display mode instructions for displaying the images, and causes the display units to... | 10/30/2007 |
| 7267280 | Diffractive optical variable image including barcode An optically variable device (OVD) is provided that includes a barcode rendered from a three-dimensional barcode. To increase the readability of the barcode rendered in the OVD, the bars of the three-dimensional barcode may have tapered sidewalls and depths that are... | 09/11/2007 |
| 7258915 | Flake for covert security applications Covert flakes having one or more symbols and/or a selected shape are used in a composition, such as ink or paint, to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the covert flakes are covert pigment f... | 08/21/2007 |
| 7241489 | Opaque flake for covert security applications Opaque flakes, such as pigment or bright flake used in paints and inks, have a selected shape and/or other indicia to provide a covert security feature to an object. In some embodiments the composition includes base pigment, and the opaque covert flakes match the vi... | 07/10/2007 |
| 7227688 | Apparatus for applying optical gradient forces An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system... | 06/05/2007 |
| 7175206 | Anti-counterfeiting marker for affixing variable entries on a support to be marked, method and resulting mark The invention concerns an anti-counterfeiting marker for providing variable entries (19) and for fixing them on a support (18) to be marked comprising: a sheet-like core (1) having at least a first colored effect (21), visible when illumi... | 02/13/2007 |
| 7177550 | On-axis laser receiver wavelength demultiplexer with integral immersion lensed detectors The present invention is directed to a laser communication receiver for wireless optical communication. A laser communication receiver includes a diffractive optical element to permit detectors at different spatial locations to detect different wavelengths of the op... | 02/13/2007 |
| 7142336 | Recording medium and hologram reader A recording medium including a storage part to hold a medium identifier intrinsic to each recording medium, and a hologram generated using a reference beam modulated with the medium identifier. Preferably, the hologram is fixed on a surface of the recording medium. | 11/28/2006 |
| 7113690 | Anti-counterfeit method and system by using a nano metal grating An anti-counterfeit method and system by using a nano metal grating, wherein an object to be recognized is formed with the nano metal grating. During the recognition process, an incidental light is applied on the metal grating. In response to the incidental light, t... | 09/26/2006 |
| 7023604 | Three dimensional optical switches and beam steering modules A beam steering module comprised of a mirror stack array in close proximity to a collimator array controllably steers photons along two axis and in a direction substantially less than 90 degrees to the collimator orientation. Several configurations of the module are... | 04/04/2006 |
| 7010123 | Invisible graphics context identifying system and fabrication method thereof The discrimination system of the cryptic graph-text document and manufacturing method thereof is to digitize and decompose the cryptic document and fix them onto the surfaces of the digital reader and printed sheet, which present themselves as the cryptic documents.... | 03/07/2006 |
| 6980336 | Secured document, system for manufacturing same and system for reading this document A document includes at least one drawing or data produced, for example, by printing. In addition, this document includes a hologram representing part of the document. The hologram of this document is recorded using a system including a prerecorded or electrically co... | 12/27/2005 |
| 6927885 | Label with a diffractive bar code and reading arrangement for such labels A label (1) made from a layer composite (15) includes at least one machine-readable diffractive bar code (3) consisting of narrow rectangular fields (4) occupied by the optically active structures and intermediate surfaces (5). The... | 08/09/2005 |
| 6832003 | Method and apparatus for reading and verifying holograms A system and method for reading the information stored in holograms and other diffractive objects. The information is read by analyzing the diffraction pattern produced when a laser beam is focused onto a small spot on the object and scanned across the object. ... | 12/14/2004 |
| 6729541 | Information reading apparatus and information recording medium An information reading apparatus can detect the coupling state of the input light to a waveguide of a laminated recording medium in a simple manner, so as to enable to focus the input light on a target recording layer to access the information recorded in the target... | 05/04/2004 |
| 6715797 | Methods of creating a tamper resistant informational article Methods of creating tamper resistant informational articles and related products are disclosed. In one embodiment, a lens has a preformed transparent hologram, metallized portions are provided and may be altered through selective application of heat to predetermined... | 04/06/2004 |
| 6655598 | Methods of creating a tamper resistant informational article Methods of creating tamper resistant informational articles and related products are disclosed. In one embodiment, a tamper resistant informational article is provided by creating a base with an elongated metal core having extruded therearound a resinous ... | 12/02/2003 |
| 6637653 | Method of measuring coercive force of a magnetic card A method for judging coercive force of a magnetic card to judge coercive force of a magnetic card to be used. According to the method for judging coercive force of a magnetic card for reproducing or recording magnetic information formed on a low coercive ... | 10/28/2003 |
| 6575371 | Injection-moulded card with decorative layer The invention relates to a method for producing injection-molded cards with at least one decorative layer (2, 6) which is already applied to a foil (1, 7) or an inlay before injection molding. To protect the inks used for the decoration from thermal actio... | 06/10/2003 |
| 6527173 | System of issuing card and system of certifying the card The CGH (computer generated hologram) readout section (4) reproduces an image of the CGH (28), which is formed in the data storage area (52) of the crude card (26). The CGH certifying section (5) judges whether the card is genuine or fake and obtains an I... | 03/04/2003 |
| 6514589 | Solar control film This invention relates to a solar control film that blocks the sunlight, when applied to various windows of automobiles, buildings or exhibition places and that prevent any second accident caused by broken glasses at an accident. From the solar control fi... | 02/04/2003 |
| 6502757 | Information recorded medium, device for reading the information, information recorded medium transfer foil, and method for producing information recorded medium An information recording medium (10) comprises a base sheet (2a), a resin layer (2) formed on the base sheet (2a) and having a holographic region (6) provided with a diffraction grating (4) in a regular or irregular arrangement, and a ferromagnetic thin f... | 01/07/2003 |
| 6341727 | Arrangement for immobilizing a data medium in a data interchange device The invention proposes an arrangement of the type comprising a unit into which a badge is introduced manually into a housing in the unit, and which comprises a lever for immobilizing the badge in an active position in the unit and an electromagnet made to... | 01/29/2002 |
| 6277461 | Optical recording medium There is provided an optical recording medium provided with at least an optical recording layer, further comprising a cured layer provided on/over outer surface of the optical recording layer and a receiving layer provided on at least a part of the cured ... | 08/21/2001 |
| 6278538 | Optical scanner The present invention relates to an optical scanner (20) comprising a radiation source (24) for generating a radiation beam, and means (22), (26) for giving the radiation beam a scanning movement in a first direction through an angular range Ɗθ1 | 08/21/2001 |
| 6170880 | Data carrier with a module and a hologram The invention relates to a data carrier (1) with a data carrier structure (2) in which a module (9) with a plate-shaped component carrier (10) and a component (13) attached to the inside of the component carrier (10) is used, and with a plate-shaped holog... | 01/09/2001 |
| 6169614 | Wedged-shape holographic collector A diffractive collector for an optical scanner includes a wedged-shaped substrate having holographic grating provided on a front surface, a conical-shaped back surface, and at least one detector. Substantially parallel light is made incident upon the fron... | 01/02/2001 |
| 6164548 | Methods of creating a tamper resistant informational article Methods of creating tamper resistant informational articles and related products are disclosed. In one method a metal foil has a hologram formed therein after which information is created on the metal foil at least partially over the hologram and the foil... | 12/26/2000 |
| 6076732 | Two-motor reflection system with hologram A holographic spectroscope for a two-motor reflection system for generating scanning patterns in which a light beam is first reflected by a first reflector connected to a first motor electrically connected to a first control circuit. A second reflector fo... | 06/20/2000 |
| 6032135 | Electronic purse card value system terminal programming system and method An electronic purse card value system (10) includes terminal devices (12). Each terminal device includes a processor (26) which is in operative connection with a memory (28) and a modem (36). The terminal devices operate in response to configuration data ... | 02/29/2000 |
| 6012641 | Laminated stretched and unstretched polyester card for IC card A plastic card prepared by laminating unstretched polyester sheets to both sides of a single sheet or a laminate of a plurality of sheets of a stretched polyester film, cutting the obtained laminate to a shape of a card, and forming a cavity for embedding... | 01/11/2000 |
| 6005691 | High-security machine-readable holographic card The hologram card generates a hologram image in response to an illumination light beam. The hologram card comprises a substrate of a first plastic material having a first refractive index. The substrate has a contoured surface. The contoured surface is fo... | 12/21/1999 |
