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| Number | Title | Issue Date |
| 8102747 | Reading device A reading device includes a spatial light modulator, a zoom lens set, an object lens, an image sensor, and an adjusting module. The spatial light modulator provides a reading beam. The zoom lens set forms the reading beam into a real image. The object lens focuses t... | 01/24/2012 |
| 8098559 | Information recording/reproducing apparatus, apparatus for manufacturing optical information recording medium, and optical information recording medium An optical information recording/reproducing apparatus equipped with a mechanism for moving an optical pickup to an arbitrary radial position of an optical information recording medium using holography. A total sum signal of signals is generated at the photodetector... | 01/17/2012 |
| 8098560 | Light spot position control apparatus and light spot position control method Provided is a light-spot-position control apparatus including: a first-light-source; a second-light-source; a beam-splitter splitting a beam of the second-light-source into m beams; an optical-system allowing a first-beam of the first-light-source and the m beams to... | 01/17/2012 |
| 8094538 | Data recording method in holography optical memory system According to an aspect of the present invention, a data recording method in a holography optical memory system, for recording a two-dimensional pixel data page in a recording medium can be provided. In accordance with an embodiment of the present invention, the data... | 01/10/2012 |
| 8089846 | Method and system for modulation coding and synchronization The present techniques provide systems and methods for modulation coding of data on optical disks, such as holographic data disks, and techniques for reading that data back from the disks. The techniques involve parsing a bit stream into a sequence of individual bit... | 01/03/2012 |
| 8089847 | Recording and reproducing apparatus The recording and reproducing apparatus has rotary drive unit (a motor) that rotationally drives a multilayer recordable recording medium 1; a reference-light-side recording and reproducing lens 6 and a recording-light-side recording and reproducing le... | 01/03/2012 |
| 8085642 | Servo controlling apparatus and method of holographic information recording/reproducing system A servo controlling apparatus of a holographic information recording/reproducing system changes the foci of reference light and signal light in a depth direction of a holographic information storage medium to record information over a plurality of information layers... | 12/27/2011 |
| 8085643 | Optical information reproducing apparatus, optical information recording and reproducing apparatus In holographic recording by the angle multiplexing method, in order to allow a signal beam and a reference beam to sufficiently overlap with each other in a storage medium to decrease as much as possible a wastefully exposed region, which does not contribute to a si... | 12/27/2011 |
| 8081552 | Hologram disc reading and writing apparatus and hologram disc reading apparatus A hologram disc reading and writing apparatus including a signal light source module, a beam splitter, a reference/reading light source, a reflector, and an optical reading head and a hologram disc reading apparatus are provided. A signal light beam emitted from the... | 12/20/2011 |
| 8077580 | Optical information recording and reproducing apparatus An optical information recording and reproducing apparatus includes an optical pickup, a phase conjugate optical system, a disc cure optical system, and a defect discrimination optical system; and an optical detector that receives a light emitted from the defect dis... | 12/13/2011 |
| 8077579 | Holographic recording medium and pickup for this medium A holographic recording medium with an improved servo structure is presented. The holographic recording medium has a hologram layer for storing holograms and a servo layer for positioning a light beam for reading and/or recording of a hologram relative to the hologr... | 12/13/2011 |
| 8072866 | Marker selection method for hologram recording device A marker selection method includes: a marker generation step for generating a marker defining a position reference when recording data according to the modulation rule of the hologram recording/reproduction; a calculation step for calculating a correlation value ind... | 12/06/2011 |
| 8064313 | Optical disk, recording/reproducing method thereof, and optical disk apparatus with employment of optical disk Then, in order to achieve the above-described object, in the optical disk of the present invention, while micro-hologram layers 7 and 8 made of plural layers are provided in an inner portion of a plate body 2 along a thickness direction of the p... | 11/22/2011 |
| 8054730 | Apparatus and method to store information in a holographic data storage medium A method is disclosed to store information in a holographic data storage medium. The method provides a hologram comprising an alignment pattern, and disposes that hologram into a holographic data storage medium during manufacture. ... | 11/08/2011 |
| 8050164 | Optical recording device and optical recording and reproduction device An optical recording device includes a light source, a spatial light modulator, a correcting optical system and a light guiding section. The spatial light modulator includes plural pixels, a signal light region that displays a signal light pattern, and a reference l... | 11/01/2011 |
| 8050165 | Optical information recording apparatus and optical information recording method A need to effectively record data of various sizes on a large-capacity holographic memory capable of high-speed recording is achieved, for example, by curing a first part of the holographic recording which is able to be multiplex-recorded in one or more units of a p... | 11/01/2011 |
| 8050166 | System and method for improved data storage A method for storing data on a storage medium is provided. The method includes receiving a modulated bitstream, wherein the modulated bitstream comprises a plurality of bits comprising a bitstate of 1 and 0. The method also includes secondary modulating each of the ... | 11/01/2011 |
| 8027238 | Holographic data support and method for production thereof The invention relates to a data support (1) with a core layer (15) and at least one adjacent layer (14a), laminated to the core layer and a corresponding production method, said core layer being embodied from a holographic data store in t... | 09/27/2011 |
| 8023385 | Method of recording holographic information and apparatus for recording/reproducing holographic information A method of recording holographic information and an apparatus for recording/reproducing holographic information. The method includes: forming an information layer by recording a hologram on a holographic recording layer of a holographic information storage medium; ... | 09/20/2011 |
| 8023384 | Computer program product for controlling an apparatus for accessing dual-path optical recording media A dual-path optical recording medium and an apparatus for accessing such are disclosed. The dual-path optical recording medium includes a substrate, an intermediate recording layer, a holographic recording layer and a dichronic mirror layer. The intermediate recordi... | 09/20/2011 |
| 8018813 | Holographic information recording and/or reproducing apparatus A holographic information recording and/or reproducing apparatus including: a light source unit emitting reference light and signal light; a first optical path guiding unit guiding the lights to cross; a second optical path guiding unit including a first polarizatio... | 09/13/2011 |
| 8014255 | Holographic recording apparatus, holographic reproducing apparatus, holographic recording method and holographic reproducing method A holographic recording apparatus is provided and includes: a signal light generation section that generates signal light modulated according to digital data; a reference light generation section that generates reference light modulated by means of a pixel pitch; a ... | 09/06/2011 |
| 8009542 | Apparatus for recording/reproducing holographic data A holographic information recording and/or reproducing apparatus includes: a light source to emit light; a polarization conversion device to form a polarized signal beam and an orthogonal polarized reference beam; an optical path forming optical system to separate t... | 08/30/2011 |
| 8004950 | Optical pickup, optical information recording and reproducing apparatus and method for optically recording and reproducing information An optical pickup for recording a hologram by using an angle multiplexing method. An optical beam is separated into two beams, a signal beam and a reference beam having different convergence/divergence degrees, by using an optical component such as a diffraction len... | 08/23/2011 |
| 8000206 | Pre-exposure and curing of photo-sensitive material for optical data storage The present invention relates to a method for performing pre-exposure and curing of a photo-sensitive material for optical data storage, in particular for holographic data storage, and to an apparatus for writing to optical storage media using such method. According... | 08/16/2011 |
| 8000204 | Data processing method for a holographic data storage system A data processing method for a holographic data storage system includes in a writing operation, receiving a plurality of digital data groups; modulating the digital data groups to a plurality of corresponding digital matrixes, wherein each of the digital matrix comp... | 08/16/2011 |
| 8000207 | Method for reproducing hologram A method for reproducing a hologram includes: irradiating a recording disc with a first reference beam and a second reference beam, both having a parallel light flux, in different directions at a same incident angle to form a hologram having an unslanted grating pat... | 08/16/2011 |
| 8000205 | Recording apparatus and recording method A recording apparatus for performing recording on a hologram recording medium includes a first light source configured to output first laser light having a first wavelength; a second light source configured to output second laser light having a second wavelength dif... | 08/16/2011 |
| 7995443 | Apparatus and method to store information in a holographic data storage medium A method to store information in a holographic data storage medium, wherein the method supplies a holographic data storage medium comprising an encoded focusing hologram and one or more encoded data holograms. The method disposes the holographic data storage medium ... | 08/09/2011 |
| 7995445 | Optical pickup apparatus, reproduction apparatus, and reproduction method An optical pickup apparatus includes: a light source to irradiate light onto a hologram recording medium onto which information is recorded by interference fringes of signal light and reference light; a spatial light modulation portion to generate the reference ligh... | 08/09/2011 |
| 7995444 | Apparatus and method to store and retrieve information using an optical holographic data storage medium A method using an optical holographic data storage medium and an optical holographic data storage drive, comprising removeably disposing the optical holographic data storage medium in the optical holographic data storage drive, and determining whether to write infor... | 08/09/2011 |
| 7990830 | Optical pickup, optical information recording apparatus and optical information recording and reproducing apparatus using the optical pickup In holographic recording, it is important to form stably an interference fringe between a reference beam and a signal beam in a holographic storage medium. To suppress factors degrading stability of the interference fringe, such as fluctuation of atmospheric air, po... | 08/02/2011 |
| 7990829 | Optical recording method, optical recording apparatus, optical recording medium, and optical reproducing method There are provided: an optical recording method containing a focus point controlling step, and an interference image recording step; an optical recording apparatus containing a focus point controlling unit, and an interference image recording unit; an optical record... | 08/02/2011 |
| 7986602 | Apparatus and method to set a rotation rate for an optical and holographic data storage medium A method to set a rotation rate for an optical holographic data storage medium by determining if the optical storage layer comprises an alternating series of lands and grooves. If the optical storage layer does not comprise an alternating series of lands and grooves... | 07/26/2011 |
| 7986603 | Spatial light modulator for holographic data storage A holographic data storage (HDS) system and method are provided. Generally, the system includes: a light source for generating a coherent light; beam-forming optics for forming the light into collimated object and reference beams; holographic storage medium; a spati... | 07/26/2011 |
| 7983133 | Portable data storage assembly having a holographic data storage layer and an optical tracking layer A portable data storage assembly, comprising a holographic data storage layer, and an optical tracking layer comprising addressing information for the holographic data storage layer, wherein that addressing information defines a first storage band comprising a first... | 07/19/2011 |
| 7974171 | Optical recording method, optical reproduction method, optical recording apparatus, and optical recording medium The present invention provides an optical recording method including: recording information on a recording layer for holographically recording information in an optical recording medium by irradiating the optical recording medium with an information beam and a refer... | 07/05/2011 |
| 7969849 | Method of reading a fourier hologram recorded on a holographic storage medium and a holographic storage system The invention relates to a method for reading a Fourier hologram recorded on a holographic storage medium with a holographic storage system. The method comprises the steps of: —calculating a characteristic value from a detected image of a reconstructed Fourier hol... | 06/28/2011 |
| 7965607 | Hologram recording/reproducing device and recording/reproducing optical apparatus A hologram recording/reproducing device includes a recording/reproducing optical unit performing recording and reproducing operations on a hologram recording/reproducing medium. The optical unit includes a laser light source emitting laser light; a spatial-light mod... | 06/21/2011 |
| 7965608 | Holographic storage medium, and apparatus for recording/reproducing data on/from the holographic storage medium A holographic storage medium, and a method and an apparatus for recording/reproducing data on/from the holographic storage medium, the method recording data on the holographic storage medium as holograms recorded in datapages, and dividing one of the datapages into ... | 06/21/2011 |
