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| Number | Title | Issue Date |
| 7675664 | Recording medium, reproducing apparatus, and reproducing method A recording medium records therein image data for distributing contents as element holograms with interference fringes generated by interference between an object beam representing the image data and a reference beam. The image data to be distributed which are recor... | 03/09/2010 |
| 7672031 | Hologram recording medium, hologram reproducing apparatus, hologram reproducing method, and hologram sheet A hologram recording medium includes a first element hologram and a second element hologram. On the first element hologram, main data is recorded such that the main data is converted into a two-dimensional image, object light of the two-dimensional image is interfer... | 03/02/2010 |
| 7660024 | 3-D HLCD system and method of making An autostereoscopic three-dimensional liquid crystal display system and a method of making the system. The system includes a collimated backlight, a first light diffracting hologram, a second right-left interlacing hologram and a liquid crystal display. If the backl... | 02/09/2010 |
| 7649661 | Holographic storage device having a reflective layer on one side of a recording layer A method is provided for manufacturing a holographic medium by recording holograms in transmission geometry, and applying a reflective layer to one side of the holographic recording material after recording is completed (alternatively, for example, the playback syst... | 01/19/2010 |
| 7623279 | Method for holographic data retrieval by quadrature homodyne detection Systems and methods for recovering data in a holographic memory system. The systems and methods use homodyne detection to introduce a local oscillator beam into a reconstructed data beam of the recovered hologram. An image of the combined beam comprising the reconst... | 11/24/2009 |
| 7595922 | Hologram reconstructing apparatus and hologram reconstructing method A hologram reconstructing apparatus configured to irradiate a hologram recording medium that stores an interference pattern of a signal beam spatially modulated by data displayed on a spatial modulator and a reference beam emitted simultaneously with the signal beam... | 09/29/2009 |
| 7589875 | Intensity profile correction for data pages for holographic storage The present invention relates to a method for recording data pages in a holographic recording medium, and more specifically to a method for compensating for sensitivity variations of the holographic material of the holographic recording medium. According to the inve... | 09/15/2009 |
| 7576900 | System and method for holographic storage A system and a method for holographic storage mainly involve forming a holographic interference pattern in a holographic recording medium. The holographic storage system utilizes a light source to emit a coherent beam. The coherent beam is irradiated to a first refl... | 08/18/2009 |
| 7508560 | Holographic recording device and holographic recording method A holographic recording device for multiple recording a plurality of interference fringes of a reference light and intensity-modulated signal lights in a same area or in areas slightly shifted each other of a holographic recording medium is disclosed. The holographi... | 03/24/2009 |
| 7486424 | Holographic recording apparatus The present invention relates to a holographic recording apparatus that records on a multiple basis information on a holographic memory. An object of the present invention is to provide a holographic recording apparatus capable of avoiding problems of recording erro... | 02/03/2009 |
| 7471431 | Hologram device and hologram recording/reproducing method A hologram device records information of an interference fringe of signal light and reference light onto a hologram recording medium and reproduces the recorded information by emitting the reference light onto a recording area of the hologram recording medium. The h... | 12/30/2008 |
| 7446916 | Holographic recording and reproduction apparatus, and method with temperature adjustment device for semiconductor laser A holographic memory reproduction apparatus which makes a wavelength of a reproducing laser beam coincident with a wavelength of a laser beam used for holographic recording when information is reproduced from a holographic recording medium. In the holographic memory... | 11/04/2008 |
| 7443553 | Holographic sensors and their production An array of discrete sensors disposed on a substrate, each sensor comprising a holographic support medium and a hologram disposed throughout the volume of the medium, whereby interaction with an analyte results in a variation of a property of the medium. ... | 10/28/2008 |
| 7436560 | Display device for a vehicle A display device for a vehicle includes a transparent window with a light emission layer intended to separate the interior of the vehicle for emitting visible light when light is beamed onto the light emission layer, a light source for beaming light onto the window,... | 10/14/2008 |
| 7420720 | Optical element and method for the production thereof A method for producing an optical element, preferably a security feature, wherein a film having a first embossed hologram in an embossing layer is provided, and a second embossed hologram is embossed into the same embossing layer such that the first embossed hologra... | 09/02/2008 |
| 7372602 | Method for recording and reproducing holographic data and an apparatus therefor A holographic recording and reproducing method for recording data in a holographic recording medium comprising a recording layer in which data are to be recorded as phase information of light by projecting a signal beam and a reference beam thereonto and a servo lay... | 05/13/2008 |
| 7369962 | Method and device for data integrity checking The present invention relates to high speed datapaths, sometimes including mixed digital and analog voltage signals. In particular, it relates to error checking strategies for large data volumes, in digital and/or analog domains and to analog signal patterns that ac... | 05/06/2008 |
| 7362482 | Inline type speckle multiplexed hologram recording apparatus and inline type speckle multiplexed hologram recording method An inline type speckle multiplexed hologram recording apparatus and method is disclosed which can condense signal light and reference light in a sufficiently overlapping relationship with each other on a hologram recording medium without using a lens having a large ... | 04/22/2008 |
| 7362687 | Method and device for holographic recording A holographic recording method for recording information as phase information of light by projecting a signal beam and a reference beam onto a recording medium, wherein an X direction is defined as the direction of a line of intersection between a plane including th... | 04/22/2008 |
| 7342697 | Hologram recording medium A hologram recording medium includes a hologram recording layer and a transparent substrate layer stacked on the hologram recording layer. The recording layer records an interference pattern of a recording beam and a reference beam. The transparent substrate layer h... | 03/11/2008 |
| 7339710 | Holographic recording medium, holographic reading system, and data reading method from the holographic recording medium A holographic disc recording medium records a hologram over the entire holographic disc recording medium by using a conical reference beam for recording. A hologram recorded image includes recorded images of a plurality of data pages including a plurality of pixels ... | 03/04/2008 |
| 7336577 | Apparatus and method for compensating wobble in holographic digital data storage system A holographic digital data storage apparatus detects a wobbling in a disc shaped storage medium, wherein the apparatus includes a beam generator and finding means, the disc including therein one or more holographically generated patterns. The beam generator projects... | 02/26/2008 |
| 7333251 | Holographic data recording apparatus and method A holographic data recording apparatus includes: a signal beam patterning unit for irradiating a signal beam onto a holographic medium, the signal beam including a data pattern to be recorded; a cylindrical optical body including a cylindrical reflective surface, by... | 02/19/2008 |
| 7333252 | Method of writing a composite 1-step hologram A method of writing a single or double parallax composite 1-step hologram is disclosed. Digital data is acquired from a real or virtual object and is described by a luminous intensity tensor. A single mathematical transformation is performed to convert the luminous ... | 02/19/2008 |
| 7324248 | Holographic printer A method and apparatus for producing holograms may use a computer generated 3-D model or data generated using multiple 2-D camera images taken of a real 3-D object or scene. The data is digitally processed and displayed on a high resolution spatial light modulator (... | 01/29/2008 |
| 7324249 | Recording and reproducing apparatus having fixed distortion correcting function A recording and reproducing apparatus includes a reproduction signal detection unit reproducing a two-dimensional pattern previously recorded on a holographic recording medium or user data recorded on the holographic recording medium, a reference pattern storage uni... | 01/29/2008 |
| 7321114 | Apparatus and method for beam drift compensation An apparatus and method for maintaining a desired position of a collimated light beam are provided. An optical system includes one or more passive optical elements movably positioned in the beam path. Beam position is responsive to movement of at least one of the pa... | 01/22/2008 |
| 7319550 | Method and apparatus for recording hologram, method and apparatus for reproducing hologram, and information retaining body While Fourier transformation of a signal light beam is performed to perform recording during holographic recording so that a focal point is formed outside a holographic recording layer (defocus recording), an aperture is arranged on an outgoing side of the reproduce... | 01/15/2008 |
| 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 |
| 7315501 | System and method for recording of information on a holographic recording medium, preferably an optical card The invention relates to a method for the recording and reading of data with a holographic write/read apparatus onto a holographic recording medium with a thin holographic recording layer. The medium is preferably an optical card (2). The recording of the inf... | 01/01/2008 |
| 7312908 | 3D image display and 3D image display method A small, inexpensive three-dimensional image display having a structure for displaying a color three-dimensional image sharply even if a low-resolution spatial optical modulating element is used. The three-dimensional image display has an illumination light source u... | 12/25/2007 |
| 7310173 | Hologram recording method, hologram recording reproduction method, hologram recording device, hologram recording/reproduction device and hologram reproduction device In the hologram recording and hologram-record reproduction using a one-dimensional optical modulator, the one-dimensional optical modulator where a plurality of light-modulating pixels are arranged modulates a laser beam to record a digital-data signal on a hologram... | 12/18/2007 |
| 7307768 | Hologram recording method and hologram recording apparatus A hologram is recorded by irradiating, with a reference light beam, a region corresponding to an intensity distribution of a signal light beam on an optical recording medium. For example, the reference light beam having the intensity distribution which substantially... | 12/11/2007 |
| 7301683 | Hologram and holographic viewing device incorporating it The invention relates to a hologram that enables two or more different images to be simultaneously reconstructed even in a state where the hologram is fixed in terms of relative position with respect to an eye, and a holographic viewing device that incorporates it. ... | 11/27/2007 |
| 7295356 | Method for improved holographic recording using beam apodization An apodization system for achieving a substantially uniform intensity profile of a modulated reference beam on a holographic recording medium. The substantially uniform intensity profile serves to improve the quality of any and all recorded holograms. In high-densit... | 11/13/2007 |
| 7292384 | Method and apparatus for providing a three-dimensional moving image display Embodiments of the invention provide a system and method for providing a three-dimensional moving image display. In one embodiment, a display having a plurality of pixels is provided. In addition, a refractive index controller is provided for controlling a modifiabl... | 11/06/2007 |
| 7286128 | System and method for rendering data associated with a 3-D scene description A system and a method for rendering data associated with a 3-D scene description are provided. The system includes a graphics processing unit configured to operably communicate with a communications bus. The graphics processing unit is further configured to receive ... | 10/23/2007 |
| 7286155 | Optical engine using one-dimensional MEMS device In one embodiment disclosed, an optical engine includes a light modulator coupled to illumination optics and imaging optics. The light modulator may be located at about an object plane. The imaging optics may include a scanner and a spatial filter located at about a... | 10/23/2007 |
| 7283286 | Hologram recording/reproducing device and optical unit A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from the laser light source, the signal light and the reference light trave... | 10/16/2007 |
| 7277209 | Computer-assisted holographic method and device The method consists of computing (E1-E4) a set of two-dimensional images in a three-dimensional geometrical space representing a virtual object from respective different viewpoints. The virtual object is represented by digital data stored in a computer... | 10/02/2007 |