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8437236 |
Optical information recording/reproducing apparatus and method
An optical information recording/reproducing apparatus includes a spatial light modulator that converts an irradiation beam emitted from a light source to a single information beam that carries...
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8432591 |
Light irradiation device for recording information in a hologram recording medium
A light irradiation device includes: a focus servo control unit including a light source, a spatial light modulating unit, and a light irradiating unit, for focus servo control so that the ideal...
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8427912 |
System and method for tracking in single-bit holographic data storage
A system and method for controlling tracking in a holographic data storage system, including: impinging a beam on a holographic data disc, wherein the beam is reflected from a micro-hologram...
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8422350 |
Information processor device and storage medium
In an information storage device in which small partitions for storing information are three-dimensionally placed inside a solid, the invention aims at long-period storage, robustness, and rapid...
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8416669 |
Generation method for complex amplitude in-line hologram and image recording device using said method
A method for generating a complex amplitude in-line hologram and an image recording device using said method makes it possible to realize high-speed processing and high-speed recording from a...
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8416668 |
Information recording apparatus, information reproducing apparatus and recording media
An apparatus for recording information in an optical-information recording media by holography includes a signal-light irradiation unit, a reference-light irradiation unit, a reference light angle...
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8400898 |
Optical recording and reproducing apparatus
The present invention achieves an optical recording and reproducing apparatus focusing two opposed beams of light at a same place in an optical recording medium to record a standing wave generated...
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8391119 |
Apparatus and method for recording/reproducing optical information, and data fetching by reference to optical information recording medium
Provided are an optical information recording/reproducing apparatus and method capable of managing a wavelength of a light source when information is recorded/reproduced by utilizing holography,...
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8385178 |
Multi-stage focus actuator and optical head
Techniques are provided for using a multi-stage actuator to actuate one or more optical components of an optical head. The multi-stage actuator includes a cross-layer displacement component which...
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8379500 |
Optical information recording apparatus, optical information recording method, optical information reproducing apparatus and optical information reproducing method
An optical information recording/reproducing apparatus and an optical information recording/reproducing method that record information using holography, wherein the optical information...
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8374067 |
Method and apparatus for recording interference fringe pattern
In order to record an interference fringe pattern in a recording layer of a medium, a plurality of laser beams are caused to interfere so as to form interference fringes in the recording layer; and...
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8369201 |
Optical pickup, optical drive apparatus, and light illumination method
There is provided an optical pickup including: an optical-system having an object-lens illuminating a first light for information recording or reproducing on a recording layer as a target and a...
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8363532 |
Method and apparatus for controlling position in which data is to be recorded
A method and apparatus to control a position in which data is to be recorded on a holographic data recording medium by using interference between a reference light and a signal light, the method...
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8345334 |
Mastering and replication of micro-holographic data storage media
A system and method for replicating optical data storage discs (e.g., holographic data storage discs) having multiple layers of data. Master discs providing for respective single layers of data are...
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8345526 |
Non-binary holograms for increased capacity
Techniques are provided for increasing storage capacity in a holographic storage system. While typical holographic storage systems involve binary storage for each data position in a holographic...
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8339921 |
Optical information recording apparatus, optical information recording method, optical information recording/reproducing apparatus and optical information recording/reproducing method
An optical information recording/reproducing apparatus using holography comprises a signal generation unit that modulates input data, adds at least one control bit to each group of N bits, performs...
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8335147 |
Reproduction apparatus and reproduction method
In case of reproducing a hologram recorded on an optical information recording medium, adjusting beam with the amplitude distribution and phase distribution at least partially the same as those of...
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8335033 |
Optical processing
A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments...
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8331210 |
System and method for storage of data in circular data tracks on optical discs
The present techniques provide methods and systems for reading and processing a data signal read from an optical data disc. In embodiments, an optical reader system may read data bits from a data...
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8315139 |
Servo structure in single-bit holographic volume recording and readout
Methods and systems are provided for recording micro-holograms in a holographic disk. Disk tilting or disk imperfections may cause counter-propagating recording and reference beams to deviate from...
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8305863 |
Optical information recording apparatus
According to one embodiment, an optical information recording apparatus includes a spatial light modulator, an optical mechanism, a driving module, and a controller. The spatial light modulator...
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8305862 |
Optical information recording and reproducing device
The optical information recording and reproducing device utilizing holography requires the optical system to generate the signal beam and the reference beam to be irradiated to the holographic...
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8306376 |
Method and apparatus for multiplexing optical information for recording and reproducing optical information over optical storage medium
There is provided an optical multiplexer including: a substrate having a plurality of beam transmitting portions; and diffraction gratings diffracting beams irradiated to the beam transmitting...
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8300511 |
Optical information record/reproduction apparatus and reproduction apparatus
A holographic memory apparatus comprises first phase modulation means that adds phase information to each pixel of a signal beam to generate page data at recording time; oscillator light generation...
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8295142 |
Objective lens for recording hologram and hologram recording device
Provided is an objective lens for recording a hologram that condenses an recording beam on a hologram recording medium, and the objective lens is configured so as to condense, in the case where the...
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8289597 |
Apparatus for reading from and/or writing to holographic storage media
The present invention relates to an apparatus for reading from and/or writing to holographic storage media, and more specifically to an apparatus for reading from and/or writing to holographic...
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8284643 |
Recording apparatus and control method
A recording apparatus for performing information recording using formation of marks by focusing a first light with an objective lens at a given position in a recording layer included in an optical...
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8274874 |
Apparatus, system, and method for locating and fast-searching units of digital information in volume, optical-storage disks
An apparatus, system, and method are disclosed to locate a group of units of digital information in a volume, optical-storage disk. The apparatus includes a first optical recording layer, a second...
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8275216 |
Method and system for equalizing holographic data pages
Methods and systems for equalizing a holographic image page and for compensating nonlinearity of a holographic data storage channel are disclosed. In one embodiment, a method for equalizing a...
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8274875 |
Optical disc device and focus control method
Disclosed is an optical disc device that is able to increase accuracy in reproducing information from an optical disc. The optical disc device 10 calculates a focus error signal SFE2 and a sum...
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8270280 |
Optical pickup device
An optical pickup device is provided with a spectral element which imparts diffraction in such a manner that four light fluxes of the first laser light are separated from each other, when a light...
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8270278 |
Optical recording apparatus, optical recording method, recording medium, and reproducing method
An optical recording apparatus comprises: a focusing section that focuses to a transmission type recording medium a recording light beam including a signal light beam and a reference light beam...
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8256677 |
Enabling holographic media backwards compatibility with dual-use media card connector
A holographic read only memory card which can be coupled to and read by a card reader to which electronic read only memory cards can also be coupled to and read by the card reader is disclosed. The...
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8254235 |
System and method for transfer of data stored in holographic storage medium
A system for processing information is provided. The system includes multiple micro-holograms contained in multiple volumes arranged along multiple tracks in one or more storage mediums. Each of...
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8254003 |
Hologram recording medium, hologram recording apparatus and method, and computer program
A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time...
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8254224 |
Servoing system for master with parallel tracks in a holographic replication system
Techniques are provided for controlling the reading of optical data from a master disk in a holographic replication system. Imperfections in the master disk or movement of the disk during a...
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8248905 |
Method of parallel bit-wise holographic data storage source using a parallel light source
The present techniques provide techniques for outputting counter-propagating parallel light waves to pre-record a holographic data disk. The parallel light waves are transmitted through a...
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8248900 |
Optical disc apparatus, focus position control method and recording medium
An optical disc apparatus can highly accurately record a hologram representing information on or reproduce such a hologram from an optical disc. When recording information on an optical disc 100,...
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8238219 |
Optical information recording/reproducing device, optical unit, and optical information recording method
An optical unit is provided with a light source; a light dividing means for dividing light emerging from the light source into a first light and a second light; a light converging means for...
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8238217 |
Method and system for detection enhancement for optical data storage
The present techniques provide methods and systems for enhancing a data signal in reading optical discs, such as holographic data discs. The techniques involve adjusting the position of a detector,...
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8238216 |
Holographic recording/reproducing apparatus having aperture of variable size
Provided is a holographic recording/reproducing apparatus including an aperture device having aperture of variable size. The holographic recording/reproducing apparatus includes a light source, an...
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8233368 |
Method and system for bit prediction using a multi-pixel detector
The present techniques provide methods and systems for more reliable reading of optical data disks. In embodiments, a multi-pixel detector that is segmented into multiple areas, or detector...
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8233369 |
Method of reading optical information and method of recording optical information
Exemplary embodiments are provided for recording and reading optical information using holography in which a first recording operation is performed in a first recording region in an overlapping...
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8228775 |
Holographic recording medium having a track pitch smaller than a distance between adjacent holograms
The present invention relates to a holographic recording medium adapted to store additional information for the recorded holograms, and to a holographic pickup for a holographic storage system for...
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8223610 |
Apparatus and method for initializing information recording medium, apparatus and method for recording information, and information recording medium
An initialization apparatus that has a simplified configuration and that forms an initial hologram in an information recording medium is provided. An initialization apparatus (10) rotates an...
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8213287 |
Apparatus and method for recording/reproducing holographic data
An optical pickup of a holographic data recording/reproducing apparatus that emits light to a reflective holographic data storage medium in which a substrate, a reflection layer, a recording layer,...
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8203924 |
Optical information recording/reproducing apparatus
There is provided an optical information recording/reproducing apparatus having an optical disc drive unit for driving an optical disc mounted, a hologram disc drive unit for driving a hologram...
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8199387 |
Phase addressed holographic associative memory
The present invention provides a holographic storage apparatus comprising a polarizing beam splitter configured to split an incoming beam into an object beam and a reference beam; a first spatial...
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8199628 |
Multilayer coaxial holographic storage system
An apparatus for reading from a multilayer holographic storage medium with a coaxial arrangement of a reference beam and a reconstructed object beam is described. The apparatus has an objective...
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8194520 |
Disc structure for bit-wise holographic storage
An optical disc for micro-holographic data storage, including: optically-enabled material configured to store holographic data; guide grooves; a first coating disposed on the guide grooves and...
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