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| Application No. | Application Title | Issue Date |
| 20100061213 | OPTICAL HOLOGRAPHIC DEVICE AND METHOD WITH GAIN COMPENSATION The present invention relates to an optical holographic device and a corresponding method for reading out a data page recorded in a holographic recording medium (106). In order to improve the bit error rate a reconstruction means (115) provided for reconst... | 03/11/2010 |
| 20100061214 | APPARATUS AND METHOD FOR THE PRODUCTION OF A HOLOGRAM IN AN OPTICAL MEDIUM The invention relates to a method and a device for producing a hologram in an optical medium, particularly for storing data in the optical medium. In the method, the hologram is produced in the optical medium using laser beams, wherein the laser beams are formed from a ... | 03/11/2010 |
| 20100061212 | METHOD AND DEVICE FOR OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING AND REPRODUCING APPARATUS The present invention is to provide a method for treating an optical recording medium including irradiating a recording layer, which has recorded information, with a treatment light through a light diffusion member having a haze of 70% to 100%, wherein the optical recor... | 03/11/2010 |
| 20100061215 | Optical Information Recording and Reproducing Apparatus and Optical Information Recording Apparatus An optical information recording and reproducing apparatus for recording information on a recording medium by forming interference fringes generated by interference between an information beam and a reference beam on the recording medium and for reproducing the informat... | 03/11/2010 |
| 20100054104 | HOLOGRAM RECORDING AND REPRODUCING DEVICE AND METHOD FOR RECORDING HOLOGRAM A hologram recording and reproducing device controls an optical beam output from an external cavity semiconductor laser to improve a diffraction efficiency. The hologram recording and reproducing device includes an external cavity laser, a photodiode, a laser drive circ... | 03/04/2010 |
| 20100054103 | 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 information; an optical system that causes the single information beam to be... | 03/04/2010 |
| 20100046338 | 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, the optical disc apparatus controls the position of an objective le... | 02/25/2010 |
| 20100039918 | 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 bea... | 02/18/2010 |
| 20100027401 | RUN LENGTH LIMITED ENCODING OF DATA INTO A 5X5 MATRIX FOR RECORDING INTO A HOLOGRAPHIC MEDIUM Holographic recording drives encode data for recording into a holographic medium. The steps comprise run length limited encoding three bytes of data into 5×5 matrix information, the data subject to a 4-byte error correction code; and providing the 5×5 matrix informati... | 02/04/2010 |
| 20100020669 | METHOD FOR HOLOGRAPHIC DATA RETRIEVAL BY QUADRATURE HOMODYNE DETECTION Systems and methods are provided for recovering data in a holographic memory system. One embodiment of these systems and methods uses homodyne detection to introduce a local oscillator beam into a reconstructed data beam of the recovered hologram. An image of the combin... | 01/28/2010 |
| 20100014409 | 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 to ... | 01/21/2010 |
| 20100014410 | OPTICAL PICKUP AND OPTICAL DISK DEVICE An optical pickup includes: a light source that emits a light beam; an object lens that condenses the light beam on a target recording layer of an optical disk; a lens moving unit; a condensing lens; a hologram element that diffracts, in diffracting a reflected light be... | 01/21/2010 |
| 20100008204 | MULTI-WAVELENGTH MICRO HOLOGRAPHIC DATA RECORDING/REPRODUCING APPARATUS A multi-wavelength micro holographic data recording and/or reproducing apparatus in which decentering of light beams having different wavelengths is compensated for, the apparatus including: at least two light sources emitting the light beams; at least two photodetector... | 01/14/2010 |
| 20100008206 | METHOD AND APPARATUS FOR RECORDING/REPRODUCING HOLOGRAPHIC INFORMATION Provided are a method and apparatus for recording/reproducing holographic information. The apparatus for recording/reproducing holographic information includes an optical pickup which irradiates light on a holographic information storage medium and receives irradiated l... | 01/14/2010 |
| 20100008205 | Optical pickup and optical device An optical pickup includes a first laser beam light source 1 for emitting a light flux of a first wavelength, a diffraction grating 5 and an optical device 6 having a second laser beam light source 7 for emitting a light flux of a second wave... | 01/14/2010 |
| 20090323481 | DRIVE APPARATUS AND TRACK JUMP METHOD A drive apparatus includes a light irradiation section for applying light from a light source via an object lens on a hologram recording medium having a recording layer on which a hologram is formed and a track formation layer on which an address recording track compose... | 12/31/2009 |
| 20090323500 | OPTICAL HOLOGRAPHIC DEVICE AND METHOD WITH ALINGNMENT MEANS The present invention relates to an optical holographic device and a corresponding method for reading out a data page recorded in a holographic recording medium (106) and carrying data modulated using a block modulation code, according to which a data page is div... | 12/31/2009 |
| 20090316559 | 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 two-... | 12/24/2009 |
| 20090316558 | TWO-DIMENSIONAL DEMODULATION METHOD, TWO-DIMENSIONAL DEMODULATION APPARATUS AND HOLOGRAPHIC APPARATUS A two-dimensional demodulation method for reproducing a data page by means of decision feedback Viterbi detection processing from a recording medium on which a data page has been recorded as a set of a plurality of two-dimensional modulation pattern symbols each of whic... | 12/24/2009 |
| 20090310462 | FRUSTUM-SHAPED HOLOGRAPHIC DISC AND MATCHING TRAY IN A HOLOGRAPHIC DRIVE A holographic disc comprises a multilayer right-circular frustum. The frustum includes a substrate layer having an inner surface and an outer surface. A reflective track layer is formed on the inner surface of the substrate layer. A first gap layer overlies the reflecti... | 12/17/2009 |
| 20090310463 | 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 prede... | 12/17/2009 |
| 20090303856 | OPTICAL STORAGE MEDIUM AND OPTICAL INFORMATION APPARATUS Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each ot... | 12/10/2009 |
| 20090296558 | Optical information recording and reproducing apparatus optical information recording method An optical information recording and reproducing apparatus includes an irradiation unit of a signal light beam and a reference light beam required for data recording, and a cure irradiation unit having at least one of a pre-cure irradiation that irradiates a predetermin... | 12/03/2009 |
| 20090296557 | 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 disc mounted, a disk discrimination device for discriminating which of an op... | 12/03/2009 |
| 20090290472 | 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 an NRZI-modulation on the modulated data, determines the at least one co... | 11/26/2009 |
| 20090290471 | RECORDING AND REPRODUCING DEVICE, RECORDING AND REPRODUCING METHOD, RECORDING DEVICE, RECORDING METHOD, REPRODUCING DEVICE, AND REPRODUCING METHOD A recording and reproducing device performs recording and reproduction on a hologram recording medium on which data is recorded by the use of interference fringes formed by signal light and reference light. The device includes: a light generation device including a spat... | 11/26/2009 |
| 20090279406 | HOLOGRAM RECORDING AND REPRODUCING SYSTEM A hologram recording and reproducing system for recording or reproducing information to or from a hologram record carrier that stores an optical interference pattern of a reference beam and a signal beam therein as a diffraction grating, includes: light producing means ... | 11/12/2009 |
| 20090279407 | SETUP FOR STORING DATA IN A HOLOGRAPHIC STORAGE MEDIUM The present invention relates to a setup for storing data in a holographic storage medium, comprising a spatial light modulator medium (18), a detector (20), a holographic storage medium (10), a first lens (22) between the spatial light modul... | 11/12/2009 |
| 20090268568 | 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 plu... | 10/29/2009 |
| 20090262628 | HOLOGRAM RECORDING APPARATUS AND METHOD, COMPUTER PROGRAM, AND HOLOGRAM RECORDING MEDIUM A hologram recording apparatus (300) records record information into a hologram recording medium (100) on which a hologram recording layer (11) and a position information recording layer (13). The hologram recording apparatus is provided with... | 10/22/2009 |
| 20090257337 | 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 discrim... | 10/15/2009 |
| 20090245052 | OPTICAL RECORDING METHOD, OPTICAL RECORDING APPARATUS, OPTICAL RECORDING MEDIUM, AND OPTICAL RECORDING AND REPRODUCING METHOD The present invention aims to provide an excellent optical recording method, an optical recording apparatus, and an optical recording medium that provide higher efficiency of recording and reproducing and are uninfluenced by the mismatch of optical axes of plural laser ... | 10/01/2009 |
| 20090238059 | HOLOGRAPHIC RECORDING MEDIUM AND ENCODING/DECODING METHOD THEREOF A holographic recoding medium is provided, having holographic pages. Each page has reference mark (RM) placement areas at fixed locations for placing RM patterns. The reference marks are used to calibrate data images of data areas each of which is enclosed by at least t... | 09/24/2009 |
| 20090238058 | MARKER SELECTION METHOD, SELECTION DEVICE, MARKER, HOLOGRAM RECORDING DEVICE AND METHOD, HOLOGRAM REPRODUCING DEVICE AND METHOD, AND COMPUTER PROGRAM 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 indicat... | 09/24/2009 |
| 20090238060 | OPTICAL REPRODUCING DEVICE AND OPTICAL REPRODUCING METHOD There is provided an optical reproducing device including: a reproducing component that includes a light source, a spatial light modulator, and a light guiding component, with the reproducing component irradiating, with reference light that has been generated by the spa... | 09/24/2009 |
| 20090231979 | OPTICAL RECORDING MEDIUM An optical recording medium is provided, which includes a recording layer includes a polymer matrix, a polymerizable compound, a photopolymerization initiator, and a polymerization inhibitor. The polymerization inhibitor is formed of a compound which exhibits a molar ab... | 09/17/2009 |
| 20090231980 | OPTICAL DISC ASSEMBLIES FOR PERFORMING ASSAYS This invention relates to an optical disc assembly capable of receiving an insert upon which an analyte of interest may be disposed. The optical disc assembly can be read by an optical disc reader, such as by a standard CD or DVD reader, and the analyte disposed on the ... | 09/17/2009 |
| 20090225641 | INFORMATION RECORDING/REPRODUCING DEVICE AND HOLOGRAM RECORDING/REPRODUCING METHOD An information recording/reproducing device irradiates a signal light beam containing arbitrary two-dimensional information and a reference beam emitted from the same light source as the signal light beam to an arbitrary region of a hologram recording medium to record a... | 09/10/2009 |
| 20090219798 | REPRODUCTION METHOD AND HOLOGRAM RECORDING MEDIUM Disclosed is a reproduction method for a hologram recording medium on which information is recorded with interference fringes of signal light and reference light, including: generating, based on light from a first light source, the reference light and coherent light cau... | 09/03/2009 |
| 20090207710 | USE OF FEEDBACK ERROR AND/OR FEED-FORWARD SIGNALS TO ADJUST CONTROL AXES TO OPTIMAL RECOVERY POSITION OF HOLOGRAM IN HOLOGRAPHIC DATA STORAGE SYSTEM OR DEVICE A method for adjusting at least one alignment control axis of a holographic data storage system or device to or towards a sufficiently optimal recovery position for recovery of a hologram based on a derived feedback error signal and/or a derived feed-forward signal. For... | 08/20/2009 |