Patents by Inventor Gabor Szarvas
Gabor Szarvas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8780425Abstract: An apparatus and a method for reading from and/or writing to holographic storage media using a coaxial arrangement of an object beam and one or more reference beams or a coaxial arrangement of a reconstructed object beam and one or more reference beams is proposed. A focus of the one or more reference beams within a holographic storage medium is shifted along the optical axis relative to a focus of the object beam or the reconstructed object beam.Type: GrantFiled: October 20, 2009Date of Patent: July 15, 2014Assignee: Thomson LicensingInventors: Szabolcs Kautny, Krisztian Banko, Gabor Szarvas, Zoltan Karpati
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Patent number: 8531748Abstract: The present invention relates to a lens system for an apparatus for reading from and/or writing to holographic storage media, and more specifically to a lens system optimized for an apparatus with a coaxial common aperture arrangement of an object beam and a reference beam. According to the invention, the lens system, which Fourier transforms an object beam and focuses a reference beam into a hologram layer of a holographic storage medium, and which focuses a servo beam onto a servo area of the hologram layer, includes a moving part acting on the object beam, the reference beam and the servo beam, and a fixed part acting only on the servo beam.Type: GrantFiled: September 24, 2008Date of Patent: September 10, 2013Assignee: Thomson LicensingInventors: Gabor Szarvas, Laszlo Domjan
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Patent number: 8068263Abstract: An apparatus for reading from and/or writing to transmission type holographic storage media is proposed, and more specifically a coaxial type apparatus for reading from and/or writing to transmission type holographic storage media with two or more reference beams, which has an improved Signal to Noise Ratio. The apparatus has a coaxial arrangement of two or more reference beams and an object beam or a reconstructed object beam. The reference beams are arranged on a circle around the object beam or the reconstructed object beam in a Fourier plane of the apparatus behind the holographic storage medium. A mirror is located in or close to this Fourier plane, which is designed such that it reflects the object beam or the reconstructed object beam without reflecting the reference beams.Type: GrantFiled: April 7, 2009Date of Patent: November 29, 2011Assignee: Thomson LicensingInventors: Gabor Szarvas, Szabolcs Kautny, Krisztian Banko, Zokan Karpati
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Patent number: 8031383Abstract: 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 reference beams having a reduced noise. In a common aperture type apparatus for reading from or writing to a holographic storage medium using shift-multiplexing, with a coaxial arrangement of two or more reference beams and an object beam or a reconstructed object beam, the reference beams being arranged around the object beam or the reconstructed object beam in a storage layer of the holographic storage medium. Each of the reference beams is located essentially halfway between two adjacent central peaks of shift-multiplexed holograms.Type: GrantFiled: October 7, 2008Date of Patent: October 4, 2011Assignee: Thomson LicensingInventors: Gabor Szarvas, Zoltan Karpati, Krisztian Banko, Szabolcs Kautny
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Publication number: 20100290126Abstract: A head mounted display is disclosed that utilizes a single video display screen to transport images to both eyes. Multiple reflections are created by illuminating the display screen form a plurality of directions, or by illuminating the display screen with light beams of differing polarizations. The reflections of the display screen are focused in order to reduce the splitting volume and then redirected by a plurality of reflective surfaces located near the focal point of the display images. Different images may be sent to each eye of a user by interlacing multiple data streams for the display and linking each data stream with a specific illumination direction, or specific polarization.Type: ApplicationFiled: July 26, 2010Publication date: November 18, 2010Applicant: Headplay (Barbados) Inc.Inventors: László Domjan, Gábor Szarvas, Szabolcs Mike
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Patent number: 7835048Abstract: The present invention relates to a coaxial type apparatus for reading from and/or writing to holographic storage media with multiple reference beams. The invention further relates to a beam generator and a filter for use in such an apparatus. According to the invention, in an apparatus for reading from and/or writing to a holographic storage medium, with a coaxial arrangement of three or more focused reference beams and an object beam or a reconstructed object beam, the foci of the focused reference beams are arranged on a circle around the object beam in a Fourier plane of the apparatus. A beam generator generates the three or more reference beams from an incoming reference beam. A filter low-pass filters the object beam and rotates the polarization of the three or more reference beams.Type: GrantFiled: October 5, 2007Date of Patent: November 16, 2010Assignee: Thomson LicensingInventors: Gabor Szarvas, Szabolcs Kautny, Krisztian Banko, Zoltan Karpati
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Patent number: 7830572Abstract: 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 storage system with a phase SLM for imprinting a 2-dimensional phase data pattern onto an object beam includes a common path interferometer for converting the phase data pattern of the object beam into an intensity data pattern.Type: GrantFiled: June 13, 2007Date of Patent: November 9, 2010Assignee: Thomson LicensingInventors: Gabor Szarvas, Szabolcs Kautny, Laszlo Domjan, Svenja-Marei Kalisch
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Patent number: 7804631Abstract: 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 storage media having an apodization filter. According to the invention, an apparatus for reading from and/or writing to a holographic storage medium, with a collinear split aperture arrangement of a reference beam and an object beam or a reconstructed object beam, includes an apodization filter for the reference beam.Type: GrantFiled: October 15, 2007Date of Patent: September 28, 2010Assignee: Thomson LicensingInventors: Gabor Szarvas, Krisztian Banko, Zoltan Karpati, Szabolcs Kautny
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Patent number: 7764431Abstract: A head mounted display is disclosed that utilizes a single video display screen to transport images to both eyes. Multiple reflections are created by illuminating the display screen form a plurality of directions, or by illuminating the display screen with light beams of differing polarizations. The reflections of the display screen are focused in order to reduce the splitting volume and then redirected by a plurality of reflective surfaces located near the focal point of the display images. Different images may be sent to each eye of a user by interlacing multiple data streams for the display and linking each data stream with a specific illumination direction, or specific polarization.Type: GrantFiled: September 24, 2008Date of Patent: July 27, 2010Assignee: Headplay (Barbados), Inc.Inventors: Laszlo Domjan, Gabor Szarvas, Szabolcs Mike
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Publication number: 20100097670Abstract: An apparatus and a method for reading from and/or writing to holographic storage media using a coaxial arrangement of an object beam and one or more reference beams or a coaxial arrangement of a reconstructed object beam and one or more reference beams is proposed. A focus of the one or more reference beams within a holographic storage medium is shifted along the optical axis relative to a focus of the object beam or the reconstructed object beam.Type: ApplicationFiled: October 20, 2009Publication date: April 22, 2010Inventors: Szabolcs Kautny, Krisztian Banko, Gabor Szarvas, Zoltan Karpati
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Publication number: 20090262405Abstract: An apparatus for reading from and/or writing to transmission type holographic storage media is proposed, and more specifically a coaxial type apparatus for reading from and/or writing to transmission type holographic storage media with two or more reference beams, which has an improved Signal to Noise Ratio. The apparatus has a coaxial arrangement of two or more reference beams and an object beam or a reconstructed object beam. The reference beams are arranged on a circle around the object beam or the reconstructed object beam in a Fourier plane of the apparatus behind the holographic storage medium. A mirror is located in or close to this Fourier plane, which is designed such that it reflects the object beam or the reconstructed object beam without reflecting the reference beams.Type: ApplicationFiled: April 7, 2009Publication date: October 22, 2009Inventors: Gabor Szarvas, Szabolcs Kautny, Krisztian Banko, Zokan Karpati
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Patent number: 7595923Abstract: The invention describes a collinear optical head for a reflection-type holographic recording medium, which is capable of obtaining an increased capacity. The optical head presented here allows for high capacity by combining holographic multiplexing methods, based on a shift and/or phase-coded reference beam, and/or scanned reference beam and/or angle and/or confocal addressing techniques. The parallel reading method and the format of the holographic recording medium ensure high-speed data transfer. Combined multiplexing is implemented in the system by means of a confocal optical arrangement that reduces crosstalk between adjacent holograms by filtering out object beams unintentionally reconstructed from non-addressed holograms.Type: GrantFiled: June 13, 2005Date of Patent: September 29, 2009Assignee: Thomson LicensingInventors: Erdei Gabor, Laszlo Domjan, Gabor Szarvas, Pal Koppa
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Publication number: 20090103152Abstract: The present invention relates to an apparatus for reading from and/or writing to holographic storage media, and more specifically to a common aperture type apparatus for reading from and/or writing to holographic storage media with multiple reference beams having a reduced noise. In a common aperture type apparatus for reading from and/or writing to a holographic storage medium using shift-multiplexing, with a coaxial arrangement of two or more reference beams and an object beam or a reconstructed object beam, the reference beams being arranged around the object beam or the reconstructed object beam in a storage layer of the holographic storage medium, each of the reference beams is located essentially halfway between two adjacent central peaks of shift-multiplexed holograms.Type: ApplicationFiled: October 7, 2008Publication date: April 23, 2009Inventors: Gabor Szarvas, Zoltan Karpati, Krisztian Banto, Szabolcs Kautny
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Publication number: 20090097086Abstract: The present invention relates to a lens system for an apparatus for reading from and/or writing to holographic storage media, and more specifically to a lens system optimized for an apparatus with a coaxial common aperture arrangement of an object beam and a reference beam. According to the invention, the lens system, which Fourier transforms an object beam and focuses a reference beam into a hologram layer of a holographic storage medium, and which focuses a servo beam onto a servo area of the hologram layer, includes a moving part acting on the object beam, the reference beam and the servo beam, and a fixed part acting only on the servo beam.Type: ApplicationFiled: September 24, 2008Publication date: April 16, 2009Inventors: Gabor Szarvas, Laszlo Domjan
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Publication number: 20090015920Abstract: A head mounted display is disclosed that utilizes a single video display screen to transport images to both eyes. Multiple reflections are created by illuminating the display screen form a plurality of directions, or by illuminating the display screen with light beams of differing polarizations. The reflections of the display screen are focused in order to reduce the splitting volume and then redirected by a plurality of reflective surfaces located near the focal point of the display images. Different images may be sent to each eye of a user by interlacing multiple data streams for the display and linking each data stream with a specific illumination direction, or specific polarization.Type: ApplicationFiled: September 24, 2008Publication date: January 15, 2009Applicant: Headplay (Barbados) Inc.Inventors: Laszlo Domjan, Gabor Szarvas, Szabolcs Mike
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Patent number: 7430078Abstract: A head mounted display is disclosed that utilizes a single video display screen to transport images to both eyes. Multiple reflections are created by illuminating the display screen form a plurality of directions, or by illuminating the display screen with light beams of differing polarizations. The reflections of the display screen are focused in order to reduce the splitting volume and then redirected by a plurality of reflective surfaces located near the focal point of the display images. Different images may be sent to each eye of a user by interlacing multiple data streams for the display and linking each data stream with a specific illumination direction, or specific polarization.Type: GrantFiled: April 3, 2006Date of Patent: September 30, 2008Assignee: Headplay (Barbados), Inc.Inventors: László Domjan, Gábor Szarvas, Szabolcs Mike
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Patent number: 7430294Abstract: There is disclosed a method and apparatus for coding data, for the purpose of preventing unauthorised readout of information. In the method, user information is converted into digital data (UD), and the digital data is recorded in a first data set (CD) and a second data set (HD), where the first data set (CD) is recorded in a first optical storage medium of a data carrier, and the second data set (HD), is recorded in a second, holographic storage medium of the data carrier. According to the method, the digital data (UD) is divided between the first and second data sets (CD,HD) in a manner so that a part of the user information is contained only in the first data set (CD), and another part of the user information is contained only in the second data set (HD), and the relative proportion of the user information in the data sets is selected so that the information contained in any one of the data sets is insufficient by itself to restore the complete user information (UD) contained in both data sets.Type: GrantFiled: October 9, 2002Date of Patent: September 30, 2008Assignee: Bayer Innovation GmbHInventors: László Domján, Gábor Erdei, Pál Koppa, Gábor Szarvas, Tamás Újvári, Peter Toth
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Patent number: 7414792Abstract: A mechanism for adjusting an apparatus for the inter-pupilar distance of a user is disclosed. Example embodiments of the disclosed mechanism use gears that link the movements of eye-optics and reflectors placed along the optical path. When the eye-optics are adjusted, this movement causes a movement in the linked reflectors that maintains a constant length for the optical path.Type: GrantFiled: November 22, 2005Date of Patent: August 19, 2008Assignee: Headplay (Barbados) Inc.Inventors: László Domjan, Gábor Szarvas, Szabolcs Mike
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Publication number: 20080137343Abstract: A method and apparatus for improving the quality of light emitted from an HMD lightsource. A backlight-type lightsource is disclosed that utilizes a reflective end-wall 17 to reflect light within the lightguide. Light emitted from an illumination source and reflected from the end-wall 17 combine within the lightguide to produce light with high contrast and homogeneity. A microprism array, consisting of microprisms of uniform height and equidistant spacing, is positioned along the bottom surface of the lightguide. A portion of the combined light incident upon the microprism array is reflected in a direction substantially perpendicular to the lightguide top surface, which comprises an aperture. Light having increased brightness and homogeneity passes through the aperture. Light incident upon the top surface outside of the aperture is reflected within the lightguide so that it may subsequently be transmitted through the aperture.Type: ApplicationFiled: December 8, 2006Publication date: June 12, 2008Applicant: Headplay, Inc.Inventors: Attila Saghy, Andras Molnar, Laszlo Domjan, Gabor Szarvas
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Publication number: 20080123166Abstract: 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 storage media having an apodization filter. According to the invention, an apparatus for reading from and/or writing to a holographic storage medium, with a collinear split aperture arrangement of a reference beam and an object beam or a reconstructed object beam, includes an apodization filter for the reference beam.Type: ApplicationFiled: October 15, 2007Publication date: May 29, 2008Inventors: Gabor Szarvas, Krisztian Banko, Zoltan Karpati, Szabolcs Kautny