Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 8179767 | Data page for use in a holographic data storage system A data page for use in a holographic data storage system, and to a method and an apparatus for writing to holographic storage media using such a data page are described. The data page has dark zones for each boundary between phase blocks of a phase mask of the holog... | 05/15/2012 |
| 8174951 | Optical information recording method and apparatus In a recording apparatus capable of performing a curing process at high speed by curing a plurality of books at a time during recording and capable of performing recording of a recordable type, when recording is stopped once, the unit of books to be cured at a time ... | 05/08/2012 |
| 8169876 | Optical information recording method, optical information reproducing method, optical information recording apparatus and optical information reproducing apparatus An optical information recording method of recording information three-dimensionally by irradiating a laser light beam onto a medium having a servo information plane on which address information and/or servo information is recorded, is disclosed. The method includes... | 05/01/2012 |
| 8159923 | 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 recording/reproducing apparatus includes a signal generation unit that generates ... | 04/17/2012 |
| 8154975 | Servoing system for multiple spot registration for holographic replication system The present techniques provide methods and systems for controlling the recording of micro-holograms using multiple counter-propagating light beams over multiple data tracks of a holographic disk. Imperfections in a holographic disk or movement of the disk during a r... | 04/10/2012 |
| 8154974 | Holographic data storing method and storing device A holographic data storing method includes the steps of: encoding original data to generate holographic data according to a codeword to symbol relation; and recording a hologram corresponding to the holographic data onto a holographic storage medium. In the codeword... | 04/10/2012 |
| 8149676 | Apparatus and method for recording/reproducing holographic data and holographic data storage medium A method and apparatus for recording and/or reproducing holographic data and a holographic information storage medium, wherein the apparatus for recording and/or reproducing holographic information includes an optical pickup emitting light onto a holographic informa... | 04/03/2012 |
| 8139461 | Record medium, optical disk unit using it, and recording method A plate body 2, multiple hologram layers 3 are provided in the thickness direction of the plate body 2, and at least one of the multiple hologram layers 3 is formed of spirally continuous hologram bands 4. Erasure areas 4A a... | 03/20/2012 |
| 8139462 | System and method for precise recording A method for calculation of recording depth in a holographic disk is disclosed. The method includes applying a first external voltage to one or more actuators coupled to an objective lens to focus a tracking beam of radiation having a first wavelength on a reference... | 03/20/2012 |
| 8134906 | Apparatus and method to optimize the performance of a holographic data storage system A method is disclosed to optimize the performance of a holographic data storage system, where that holographic data storage system comprises a plurality of calibratable components, and where each of the plurality of calibratable components comprises one or operation... | 03/13/2012 |
| 8130620 | Hologram recording/reproducing device, method thereof, and holographic recording medium A hologram recording/reproducing device includes an optical section which irradiates a holographic recording medium with an optical beam; and a control unit which controls the optical section. The optical section includes a laser light source which emits the optical... | 03/06/2012 |
| 8125872 | Recording medium and recording system Disclosed herein is a recording medium on or from which the recording or reproduction of data is stably performed. On the recording medium, data are recorded three-dimensionally by the irradiation of a recording laser beam. The recording medium includes a reflection... | 02/28/2012 |
| 8121010 | Hologram device, tilt detection method, and tilt correction method A hologram device includes: a light source for applying light to a hologram recording medium having a recording layer in which information recording is performed by interference fringes between signal light and reference light; a spatial modulation unit that generat... | 02/21/2012 |
| 8121009 | Apparatus and method for recording data on holographic storage medium An apparatus and method to record data on a holographic storage medium, the apparatus including: a light processing unit to record the data on the holographic storage medium using a reference beam and a signal beam, the light processing unit including a light modula... | 02/21/2012 |
| 8116186 | Collinear holographic storage method and apparatus In the specification and drawings, a collinear holographic storage method is described and shown with a controlling step to control the temperature of the collinear holographic storage media such that the writing temperature of the collinear holographic storage medi... | 02/14/2012 |
| 8116185 | Holographic storage medium with integrated phase mask A holographic storage medium is proposed, and more specifically a holographic storage medium with an integrated phase mask layer. The holographic storage medium has a phase mask layer on top of a holographic storage layer, wherein the phase mask layer has one or mor... | 02/14/2012 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
