Class / Patent application number | Description | Number of patent applications / Date published |
359021000 | Having defined page composer | 15 |
20080198429 | HOLOGRAM RECORDING DEVICE - A hologram recorder (A | 08-21-2008 |
20080204837 | METHOD OF AND APPARATUS FOR RECORDING/REPRODUCING DATA ON/FROM HOLOGRAPHIC STORAGE MEDIUM - A method of and apparatus for recording/reproducing data on/from a holographic storage medium. The method of recording data on a holographic storage medium in which holograms containing data by interference between a signal light and a reference light are recorded in pages includes modulating additional information including information about a page so as to keep the rate of 0s or 1s in binarized data of the additional information constant and recording the page having the modulated additional information added thereto on the holographic storage medium. | 08-28-2008 |
20080204838 | FIXING APPARATUS, FIXING METHOD, AND OPTICAL INFORMATION RECORDING APPARATUS - A fixing apparatus and a fixing method are disclosed for performing a fixing process on a holographic recording medium with an optically recordable recording layer. The fixing apparatus includes a light source which illuminates the recording layer with fixing light, and at least one reflecting mirror which reflects the fixing light passing through the recording layer and makes the fixing light go back again toward the recording layer. | 08-28-2008 |
20080212152 | SYSTEM AND METHOD FOR ENCRYPTION OF A HOLOGRAPHIC IMAGE - A system and method for encryption of a holographic image is disclosed. The method includes the operation of producing a beam of light having at least two wavelengths of light. The beam of light can be split to form an illumination beam and a reference beam. Amplitude information can be added to the illumination beam with an intensity control device to form an object beam. Wavelength information can be selected in the object beam to form a spatial color modulated object beam. The reference beam and spatial color modulated object beam can be directed to a predetermined location on the holographic media to interfere to record an interference pattern. | 09-04-2008 |
20080231925 | Two-Dimensional Modulation Method For Hologram Recording and Hologram Apparatus - To provide a two-dimensional modulation method for hologram recording which is capable of preventing degradation of reconstructing performance when positional shift occurs and which enables information to be stably recorded or reproduced. The hologram recording carrier employs the two-dimensional modulation method for hologram recording for generating coherent light containing therein page data through a spatial light modulator having a plurality of pixels two-dimensionally arranged therein, in which the pixels of the spatial light modulator are partitioned into a plurality of blocks consisting of m pixels adjacent to each other (where m=an integral number), and a boundary portion which has a width having at least the width of one pixel of the spatial light modulator or of one pixel of an image detecting sensor used to reproduce the recorded page data and the distance between the adjacent pixels in each of the blocks, and each of which shields light is provided between the adjacent blocks. | 09-25-2008 |
20080239425 | Hologram Recording Apparatus and Method, Hologram Reproducing Apparatus and Method, and Computer Program - A hologram recording apparatus is provided with a modulating device for modulating information data in accordance with a modulation rule related to hologram recording/reproduction, to thereby generate a modulation pattern; a judging device for judging whether or not the modulation pattern includes a pattern portion which matches a predetermined target pattern; a changing device for changing at least one portion of the pattern portion to a change pattern if it is judged that the modulation pattern includes the pattern portion which matches the target pattern; and an irradiating device for irradiating beams for recording the modulation pattern, in which at least one portion of the pattern is changed to the change pattern, into a holographic recording medium. | 10-02-2008 |
20080247017 | SYSTEM AND METHOD FOR PRINTING A HOLOGRAM - A system and method for printing a hologram are disclosed. The method includes the operation of transmitting a laser light beam. The laser light beam can be split into an object beam and a reference beam. Phase information can be added to the object beam using a spatial phase modulator to form a phase controlled object beam. The reference beam and the phase controlled object beam can be directed to a predetermined location on a holographic media to enable the reference beam and the phase controlled object beam to form an interference pattern on the holographic media. | 10-09-2008 |
20080259421 | METHODS FOR IMPLEMENTING PAGE BASED HOLOGRAPHIC ROM RECORDING AND READING - According to one aspect, methods and systems for recording and reading holographic storage media are provided. In one aspect, a method includes illuminating a data mask with a beam and recording a resulting modulated beam in a holographic storage medium, wherein the data mask includes an information layer that is divided into multiple data pages, and propagating a reference beam to the holographic storage medium to record the multiple data pages of the data mask in a parallel fashion on the holographic storage medium. | 10-23-2008 |
20080266624 | HOLOGRAM RECORDING APPARATUS - A hologram recording apparatus for recording a hologram by dividing light from a light source into recording light and reference light through a spatial light modulator, and emitting the recording light and reference light through the same objective lens onto a hologram recording medium; wherein the spatial light modulator has a light modulating region including a plurality of pixels; the light modulating region is divided into a central pixel region where a part of the light from the light source is led to the objective lens as the recording light, and a peripheral pixel region where the rest or another part of the light is led to the objective lens as the reference light; and a plurality of pixels included in the peripheral pixel region includes larger pixels than a plurality of pixels included in the central pixel region. | 10-30-2008 |
20090021814 | HOLOGRAM APPARATUS AND METHOD THEREOF - Hologram recording and reconstruction apparatuses and method thereof are provided. The hologram recording apparatus comprises a laser source, a spatial light modulator, and a Fourier lens. The laser source provides a coherent light beam. The spatial light modulator receives m-bits data to only determine a (p×q) block comprising ON-pixels less than OFF-pixels, and receives the coherent light beam to modulate with the (p×q) block to generate the signal beam. The Fourier lens focuses the signal beam on the hologram recording medium, so that when the focused signal beam and a focused reference beam is modulated together, the hologram data is generated to be recorded on the hologram recording medium. | 01-22-2009 |
20090141325 | Hologram Device and Recording Method - A hologram apparatus capable of recording and reproduction of a recording medium with stability. The hologram apparatus includes: a suspension unit for holding a recording medium in a freely mountable fashion, the recording medium storing an optical interference pattern inside as a diffraction grating; a reference light optical system for emitting reference light toward the recording medium; and a signal light optical system for emitting signal light toward the recording medium, being arranged on a side opposite from the reference light optical system coaxially across the recording medium, the diffraction grating being formed by opposite irradiation of the recording medium with the signal light and the reference light. The hologram apparatus has: an objective lens for condensing the reference light with a first numerical aperture; and a spatial light modulation device for generating the signal light from the reference light past the recording medium and making it pass through the recording medium with a second numerical aperture different from the first numerical aperture, the signal light being modulated according to recorded information. | 06-04-2009 |
20090237762 | HOLOGRAM MEDIA READING APPARATUS - A hologram media reading apparatus including a reference light source, a stop with gray level aperture, and an optical sensor is provided. The reference light source is disposed on one side of a hologram medium, and capable of emitting a reference light beam. The reference light beam is transmitted to the hologram medium. The stop with gray level aperture and the reference light source are disposed on the same side or opposite sides of the hologram medium. The stop with gray level aperture has a light transmissive region, an opaque region, and a transmittance gradually varying region. The opaque region surrounds the light transmissive region. The transmittance gradually varying region surrounds the light transmissive region. A part of the reference beam from the hologram medium passes through the stop with gray level aperture and is transmitted to the optical sensor. | 09-24-2009 |
20100188721 | TWO-DIMENSIONAL ENCODER, HOLOGRAPHIC MEMORY DEVICE AND HOLOGRAPHIC MEMORY MEDIUM - A two-dimensional encoder stores data on a holographic memory. The encoder encodes data of k bits (where k is an integer and k≧3) into n pixels arranged two-dimensionally (where n is an integer and n≧6). The encoder includes a first processing section | 07-29-2010 |
20120250122 | COMPUTER-GENERATED HOLOGRAM INCLUDING SPLICE PLANES FOR RECONSTRUCTING A FULL-COLOR IMAGE WITH HIGH RESOLUTION AND ITS FABRICATION METHOD - A recording plane of a computer-generated hologram that is capable of reconstructing a full-color image and achieving a high resolution is divided by a multiplicity of parallel sections in the horizontal direction to define a multiplicity of areas. Amplitude information and phase information corresponding to different wavelengths which vary periodically in a direction traversing the multiplicity of areas, is recorded in the recording medium. Information about the same portion of the original image is recorded in individual points belonging to the same area, and information about another corresponding portion of the original image is recorded in individual points belonging to another area. | 10-04-2012 |
20140268264 | SPATIAL LIGHT MODULATOR, HOLOGRAPHIC THREE-DIMENSIONAL IMAGE DISPLAY INCLUDING THE SAME, AND METHOD FOR MODULATING SPATIAL LIGHT - A spatial light modulator, a holographic image display including the same, and a method for spatially modulating light. The spatial light modulator modulates a phase of light that is incident on a plurality of pixels and includes a variable refractive index layer that has a refractive index which is variable based on one of an optical signal and an electrical signal, and a metal layer that is disposed on the refractive index-change layer, and a high refractive index layer on the metal layer. Light incident on the metal layer causes generation of a surface plasmon at an interface between the variable refractive index layer and the metal layer. | 09-18-2014 |