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8135219 |
Method of detecting and compensating fail pixel in hologram optical storage system
A method of detecting and compensating fail pixels in a holographic storage system. The method includes steps of: providing a plurality of image frames to show on a data plane for all pixels on the...
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8134771 |
Spatial light modulators with changeable phase masks for use in holographic data storage
A holographic data storage system that includes a write head that includes a pixellated spatial light modulator and a separate or integral phase mask that varies the phase depending on the location...
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8125698 |
Systems and methods for producing wide field-of-view holographic displays
Hologram recording devices and techniques can be employed to produce wide field-of-view holograms. A lens can be used to couple an object beam into a holographic recording material without...
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8120828 |
Reflective optical system, tracking system and holographic projection system and method
The invention relates to an optical reflection system with a reflection element for reflecting reconstruction light waves, an entry-side focal point, from which the reconstruction light waves come...
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8120829 |
System and method for real time holographic data recording and readout
A method for holographic data recording and simultaneous data readout without requiring additional optical power for readout illumination is provided. The method comprises reflecting a transmitted...
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8107145 |
Reproducing device and reproducing method
A reproducing device for performing reproduction regarding a hologram recording medium where a hologram page is recorded in accordance with signal light, by interference between the signal light...
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8107144 |
Method and device for manufacturing a hologram recording medium containing multiple objects that are reproduced when observed from different positions
A method and a device for manufacturing a hologram recording medium that has an arrangement by which different original images are reproduced when observed from different positions. The method...
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8089456 |
Inputting information using holographic techniques
A method for inputting commands to a holographic input system, includes the steps of generating a virtual image of an input device by illuminating a hologram of the input device by means of a...
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8045246 |
Method and apparatus for bulk erasure in a holographic storage system
A method and system for bulk erasing in a holographic storage system is disclosed. The method may involve illuminating the entire volume storage region of a photorefractive crystal with a laser to...
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8045245 |
Multicolor holgraphic replication by masking
A multicolor hologram (e.g., a two-color hologram) is replicated (copied) into a photosensitive layer by masking to produce a copy (replicate) of the hologram in a manner such that the copy is an...
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8031383 |
Common aperture holographic storage system with reduced noise
An apparatus for reading from or writing to holographic storage media, and more specifically a common aperture type apparatus for reading from or writing to holographic storage media with multiple...
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8009339 |
Holographic recording medium, holographic writing system and holographic reading system
A holographic recording medium including a recording layer on a substrate, which records data information in a light interference pattern. In the holographic recording medium, information on a...
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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...
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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...
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7978386 |
Generation of holographic diffraction patterns
A method of generating a holographic diffraction pattern and a holographic lithography system. The method involves defining at least one geometrical shape; generating at least one line segment to...
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7976170 |
Holographic projection method and holographic projection device
According to the present invention, a plurality of video image data are converted into individual spatial frequency information using Fourier transformation. The individual spatial frequency...
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7965430 |
Pre-exposure and curing of photo-sensitive material for optical data storage
The present invention relates to an apparatus for writing to optical storage media capable of performing pre-exposure and/or curing of a photo-sensitive material for optical data storage, in...
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7961367 |
Method and system for producing multiple images in a single image plane using diffraction
Methods create images viewable under different selected angels on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a...
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7957045 |
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...
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7952777 |
Three-dimensional video display apparatus
In a three-dimensional video display apparatus, accommodation and convergence among physiological characteristics of eyes are abandoned, thereby resulting in generation of unnatural...
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7952776 |
Hologram reading apparatus, hologram reading method, hologram recording apparatus and hologram recording method
A hologram reading apparatus includes: a unit for holding a hologram recording medium in which data page is recorded by irradiating as a single beam both reference light and signal light modulated...
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7944602 |
Systems and methods using interferometric optical modulators and diffusers
Various embodiments include interferometric optical modulators comprising a substrate layer having a thickness between about 0.1 mm to about 0.45 mm thick and a method for manufacturing the same....
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7940437 |
Computer-generated hologram for reconstructing a full-color image with high resolution and its fabrication method
A computer-generated hologram that is capable of reconstructing a full-color image and achieving a high resolution is provided. A recording plane of the hologram is divided by a multiplicity of...
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7936490 |
System and methods for shearless hologram acquisition
Systems and methods for shearless digital hologram acquisition, including an apparatus incorporating an illumination source configured to produce a first beam of light, which is then split by a...
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7920309 |
Holographic recording medium, holographic writing system and holographic reading system
A holographic recording medium including a recording layer on a substrate, which records data information in a light interference pattern is provided. In the holographic recording medium,...
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7911666 |
Apparatus for reading a hologram
An apparatus for reading a hologram, in particular a computer-generated hologram, that includes a radiation source for irradiation of the hologram with a read beam composed of electromagnetic...
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7907773 |
Apparatus and method for holographic information storage and retrieval
A method is disclosed to store and retrieve information using holographic data storage media. The method provides original data, generates a first image of that original data, and encodes that...
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7901086 |
Optical unit, light processing unit, light processing method, illumination unit and image generation unit
For displaying a color image by recombination of several single color images, parasitic noise like speckles due to scattering within the system, in particular when laser light is involved, with the...
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7903309 |
Optical informational recording/reproduction device and method
An optical information recording device, a reproduction device, and a method enabling include a first spatial light modulator I for generating information light by spatially modulating light from a...
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7903310 |
Hologram recording/reproducing apparatus, hologram multiplex recording method, and hologram recording medium utilizing reaction rate information and a recording interval time based on the reaction rate information
An object is to prevent lowering of a dynamic range of a hologram recording medium without lowering an average data transfer rate, and to provide stabilized recording sensitivity. A scheduler...
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7894112 |
Security element with a diffraction structure having subareas representing recognizable information
A security element, preferably for documents of value, which at least has one area with a diffraction structure, which under specific viewing conditions reconstructs a diffractive image. This area...
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7884984 |
Multicolor holographic replication by masking
A multicolor hologram (e.g., a two-color hologram) is replicated (copied) into a photosensitive layer by masking to produce a copy (replicate) of the hologram in a manner such that the copy is an...
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7872787 |
Holographic multiplex recording method, holographic recording apparatus and holographic recording medium employing the method using interference fringes
A holographic multiplex recording method which can keep a recording data rate constant and equalize nonuniformity in recording due to vibrations or the like, and a holographic recording apparatus...
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7864388 |
Method and apparatus for recoding holographic diffraction gratings
A method and apparatus for scanning an input beam of light in a two dimensional pattern; splitting the scanned input beam of light into two output beams of light, each one of the two output beams...
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7859970 |
Holographic storage and reproduction system and method with servo
A holographic storage and reproduction system and method with a servo are provided, wherein a servo mechanism is provided, such that the holographic interferogram is continuously stored in the...
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7852538 |
Hologram recording apparatus and hologram recording method
At the time of varying the angle of a scan mirror for varying the angle of incidence of a reference beam on a hologram recording material, the angle of a slit is also varied in conjunction, whereby...
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7843362 |
Method of controlling a driving maneuver
A method is provided for controlling an at least partly automatically implementable driving maneuver by which a motor vehicle can be moved from an actual position into a desired position. In the...
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7830572 |
Holographic storage system based on common path interferometry
The present invention relates to a holographic storage system, and more specifically to a holographic storage system using a phase spatial light modulator. According to the invention a holographic...
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7830573 |
Method and system for producing multiple images in a single image plane using diffraction
Methods create images viewable under different selected angles on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a...
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7826326 |
Data reading method
A data reading method used in a reading device for reading a holographic storage medium is provided. The holographic storage medium has several data areas. Each data area has several data pages,...
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7821692 |
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...
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7804631 |
Holographic storage system with apodization filter
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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7796313 |
Holographic information recording-reproducing process and apparatus therefor
A process for recording information on and reproducing information from a reflection-type holographic information recording medium, having a reflecting layer. Recording includes (i) branching a...
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7787346 |
Hologram recording method and device, hologram reproduction method and device, and optical recording medium
There is provided a hologram recording method, including generating a signal light which is spatially modulated such that digital data is represented by an image of intensity distribution,...
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7787164 |
Apparatus and method to evaluate a holographic data storage medium
A method to evaluate a holographic data storage medium, wherein the holographic data storage medium is evaluated by a manufacturer. In certain embodiments, the holographic data storage medium is...
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7773487 |
Apparatus and method to determine an optimal optical detector orientation to decode holographically encoded information
A method is disclosed to determine an optimal optical detector orientation to decode information encoded holographically. The method supplies a matched filter, an orientation image, a holographic...
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7773275 |
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...
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7773274 |
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...
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7760407 |
Multilayer holographic recording medium and manufacturing method of the same, multilayer holographic recording and reproducing method, multilayer holographic memory reproducing apparatus, and multilayer holographic recording and reproducing apparatus
A multilayer holographic recording medium that improves recording density and data transfer rates. The multilayer holographic recording medium, from which information is reproduced by a multilayer...
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7755820 |
Two-dimensional modulation method for hologram recording and hologram apparatus with encoder for driving SLM displaying boundary portion
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...
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