Having Defined Page Composer Patents (Class 359/21)
  • Patent number: 10401795
    Abstract: A device and method for recording and reproducing holographic information, and a display apparatus are disclosed. The device for recording holographic information comprises an electro-optical regulating element, which is arranged in a light path between an object to be reproduced and a recording medium, receives an object beam scattered by the object to be reproduced, and regulates an outgoing direction and a focal distance of the object beam to irradiate the recording medium. The recording medium is configured to receive the reference beam from the light source and the object beam regulated by the electro-optical regulating element. The reference beam and the object beam form information relevant with the object to be reproduced in the recording medium. By regulating the outgoing direction and focal distance of beam with the electro-optical regulating element, it is unnecessary to rotate the recording medium for recording and reproducing the holographic information.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: September 3, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yuxin Zhang, Hongfei Cheng, Yongda Ma, Xinyin Wu, Yong Qiao
  • Patent number: 10393501
    Abstract: A device for determining a 3D structure of an object having first and second laser emitters which generate laser radiation with first and second different wavelengths, respectively. A first beam splitter splits the laser radiation of each laser emitter into reference and illuminating radiation. The illuminating radiation is adapted to impinge on the object to be measured, be reflected by the object as object radiation, and interfere with the reference radiation to form interference patterns. A detector receives the interference patterns. A selection hologram deflects object radiation which impinges on it within a predefined incidence angle range and passes object radiation which impinges on it outside of the incidence angle range undiffracted. The undiffracted radiation either passes by the determination area of the detector or impinges on the determination area at an angle outside the determination angle range.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: August 27, 2019
    Assignee: VOCO GMBH
    Inventor: Alexander Knüttel
  • Patent number: 10154236
    Abstract: An Acoustic-Optic A/O device receives light from a source and deflecting the light onto the second A/O device which may be a multi-stacked set of individual A/O devices. The first and second devices may deflected light according to control signals. Also, a multi-modulator projector display system including a light source, controller, an A/O modulator illuminated by the light source and capable of deflecting light according to controller signals, a second modulator illuminated by light from said A/O modulator and capable of modulating the A/O modulated light, said second modulator comprising a plurality of mirrors, and said second modulator capable of modulating the light according to controller signals.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: December 11, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventor: Martin J. Richards
  • Patent number: 10146181
    Abstract: Provided are an apparatus and a method for displaying a holographic three-dimensional (3D) image. The apparatus includes an image segmenter configured to segment an original image into a plurality of segments, and a calculator configured to calculate diffraction fringe pattern information for displaying each of the plurality of segments as a 3D holographic image. The image segmenter adjusts the number of the plurality of segments.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hojung Kim, Hoon Song, Hongseok Lee
  • Patent number: 10146184
    Abstract: A hologram generation apparatus includes an LCOS, an LCOS display control unit configured to form a partial hologram generation display area and positioning hologram generation display areas on a display surface of the LCOS, an object light optical system configured to apply object light onto a recording medium and generate a partial hologram and positioning holograms, the object light being generated by the partial hologram generation display area and the positioning hologram generation display areas, and a position control unit configured to determine a position of an partial hologram to be generated next based on positions of the generated positioning holograms.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: December 4, 2018
    Assignee: JVC KENWOOD CORPORATION
    Inventor: Tadashi Aizawa
  • Patent number: 9606507
    Abstract: A method for integrating a synthetic hologram in an image of a scene, including: forming, from a first image of the scene, a first matrix including pixels of two shades according to the gray level of the corresponding pixel of the first image, and a second matrix, image of the gray level difference between the corresponding pixels of the first image and of the first matrix; forming a third matrix based on a second image; forming a fourth matrix having each pixel including a central area with a surface area determined by the corresponding element of the second matrix and off-centered in the pixel according to the corresponding pixel of the third matrix; and performing a lithography of an opaque layer at the surface of a plate according to the pattern defined by the fourth pixel matrix.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: March 28, 2017
    Assignee: Commissariat a l'energie atomique et aux energies alternatives
    Inventor: Christophe Martinez
  • Patent number: 9594346
    Abstract: A method of generating a hologram of an object is disclosed. The method comprises: receiving data corresponding to a plurality of non-coherent sub-holograms acquired by an optically passive synthetic aperture holographic apparatus, combining the sub-holograms to generate a mosaic hologram of the object, and transmitting the mosaic hologram to a computer readable medium.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 14, 2017
    Assignee: Ben-Gurion University of the Negev Research and Development Authority
    Inventors: Joseph Rosen, Barak Katz
  • Patent number: 9503141
    Abstract: A socket device is provided. The socket device includes a substrate, at least one structure, and a socket. The at least one structure is disposed on the substrate, and includes an upper surface. The upper surface includes an opening separated with a predetermined interval from a surface of the substrate. The socket is disposed so that at least a portion of the socket is stacked on an upper portion of the structure. The socket is electrically connected to the substrate via the opening. The number of parts is reduced, so that the number of assembly processes is reduced and assembling is convenient, and manufacturing costs is reduced and slimness of an electronic device is achieved.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: November 22, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Bong-Jae Rhee
  • Patent number: 9223651
    Abstract: Provided is a data processing system for recording holographic optical information. The data processing system includes, a data interface constructing a data page by using data transmitted from a host information device, a memory storing data transmitted from the data interface, an encoder ECC-encoding data that is stored in the memory, and a modulator modulating the encoded data so as to record optical information. Accordingly, it is possible to efficiently transmit data when recording and reproducing holographic optical information.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: December 29, 2015
    Assignee: MAPLE VISION TECHNOLOGIES INC.
    Inventors: Nak Young Kim, Pil Sang Yoon, Kyu Il Jung
  • Patent number: 9188955
    Abstract: A method and apparatus for fast generation of a hologram image. The method may include generating an elemental fringe pattern of a three-dimensional (3D) point included in a 3D spatial object, generating a point hologram based on the elemental fringe pattern, and generate a 3D hologram using a hologram pattern for each depth layer, generated using the point hologram.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: November 17, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho Cheon Wey, Dong Kyung Nam, Seok Lee
  • Patent number: 9041989
    Abstract: The invention relates to apodization in a holographic direct view display. Known apodization functions are utilized/modified for an apodization mask such that the functions reduce the intensities of selected higher magnitudes of diffractions. The holographic direct view display comprises a controllable light modulator having modulator cells and modulating impinging coherent light into a phase and/or amplitude, and an array of apodization masks. The apodization masks have the same apodization function for a predetermined group of modulator cells, by means of which function a complex amplitude transparency can be set for the modulator cells. This transparency corresponds to an individually predefined course of intensity in a far field of the light modulator, wherein the predefined course of intensity includes a reducing of the light intensity of higher magnitudes of diffractions, and/or of the interfering light emitted by the light modulator.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: May 26, 2015
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert Leister, Stephan Reichelt
  • Patent number: 8995037
    Abstract: Holographic display apparatuses are provided. The holographic display apparatus may include a light source module generating coherent light, at least two input optical systems converging the light generated from the light source module on at least two converging points, an output optical system mixing the lights provided from the at least two input optical systems to provide a hologram image, and a spatial light modulating module modulating the light.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: March 31, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Byung Gyu Chae, Joonku Hahn, Hwi Kim
  • Patent number: 8891146
    Abstract: Technologies are generally described for generating an image in a holographic imaging device by causing multiple reflections of a hologram reconstruction light on one side of a display panel in the holographic imaging device. An example device may include a display panel, a semi-transparent mirror layer on the display panel, a mirror layer at a side of the semi-transparent mirror layer opposite to the display panel, and a light irradiation unit opposite to the semi-transparent mirror layer. The light irradiation unit may irradiate a hologram reconstruction light on the semi-transparent mirror layer at a predetermined incident angle. The semi-transparent mirror layer may reflect a portion of the hologram reconstruction light such that the reflected portion of the hologram reconstruction light may be incident on the mirror layer. The semi-transparent mirror layer may transmit the other portion of the hologram reconstruction light to cause interference in the hologram.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: November 18, 2014
    Assignee: Empire Technology Development LLC
    Inventor: Eiji Yamaichi
  • Patent number: 8873119
    Abstract: A system and a method perform buoyance of a 3D hologram image on a hologram display screen in a projection mode. A system of displaying a digital hologram includes: a composite hologram unit configured to generate a hologram array by receiving hologram data of a fringe pattern and by compositing background image and a foreground image using the received fringe pattern; a hologram projection unit configured to project a hologram image through a wide-angle lens by applying a light to the hologram array; and a hologram display unit configured to perform space buoyance of the hologram image projected by the hologram projection unit on a 3D hologram display screen. The digital hologram content is managed in real time, and transmission of the digital hologram content to a remote place and site adaptive display of hologram image media may be achieved.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: October 28, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Beom Ryeol Lee, Wook Ho Son, Seung Taik Oh, Ho Yong Seo, Il Kwon Jeong
  • Publication number: 20140268264
    Abstract: A spatial light modulator, a holographic image display including the same, and a method for spatially modulating light. The spatial light modulator modulates a phase of light that is incident on a plurality of pixels and includes a variable refractive index layer that has a refractive index which is variable based on one of an optical signal and an electrical signal, and a metal layer that is disposed on the refractive index-change layer, and a high refractive index layer on the metal layer. Light incident on the metal layer causes generation of a surface plasmon at an interface between the variable refractive index layer and the metal layer.
    Type: Application
    Filed: September 10, 2013
    Publication date: September 18, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Gae-hwang LEE, Jae-eun JUNG, Kyu-young HWANG, Hoon SONG, Seung-hoon HAN
  • Patent number: 8804221
    Abstract: A synthetic hologram of a first image consists of an array of coding cells each comprising light and dark portions. A second visible image is superposed to the synthetic hologram, where the light and dark portions of selected coding cells in the second visible image are inverted and have a phase modified by an offset value relative to other coding cells of the rest of the hologram.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: August 12, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventor: Christophe Martinez
  • Patent number: 8705156
    Abstract: The invention relates to apodization in a holographic direct view display. Known apodization functions are utilized/modified for an apodization mask such that the functions reduce the intensities of selected higher magnitudes of diffractions. The holographic direct view display comprises a controllable light modulator having modulator cells and modulating impinging coherent light into a phase and/or amplitude, and an array of apodization masks. The apodization masks have the same apodization function for a predetermined group of modulator cells, by means of which function a complex amplitude transparency can be set for the modulator cells. This transparency corresponds to an individually predefined course of intensity in a far field of the light modulator, wherein the predefined course of intensity includes a reducing of the light intensity of higher magnitudes of diffractions, and/or of the interfering light emitted by the light modulator.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: April 22, 2014
    Assignee: Seereal Technologies S.A.
    Inventors: Norbert Leister, Stephan Reichelt
  • Publication number: 20140009808
    Abstract: Iterating an optical phase conjugation of ultrasonically-modulated diffuse light emitted by a scattering medium includes illuminating the scattering medium with a light beam from a coherent light source, modulating the diffuse light transmitted through the scattering medium with an ultrasonic wave focused on a region of interest within the scattering medium, fixing a hologram, retro-reflectively illuminating the scattering medium using a phase-conjugated copy of the diffuse light that was ultrasonically modulated, moving the ultrasonic focus, and iterating until light is focused on the final target.
    Type: Application
    Filed: September 13, 2013
    Publication date: January 9, 2014
    Inventors: Lihong Wang, Xiao Xu
  • Patent number: 8498035
    Abstract: Coherent light from a laser is magnified, made into a parallel light flux, and irradiated on a hologram recording medium in which a hologram image of a scatter plate is recorded. A hologram reproduction real image of the scatter plate is generated using the parallel light flux as illumination light for reproduction. The spatial light modulator consisting of a liquid crystal display, etc., is disposed so as to overlap on the position of the hologram reproduction real image, and a modulated image is obtained on the surface of the reproduction real image of the scatter plate. The modulated image is projected onto the screen by the projection optical system.
    Type: Grant
    Filed: August 17, 2010
    Date of Patent: July 30, 2013
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventor: Makio Kurashige
  • Patent number: 8493642
    Abstract: A method for generating video holograms for a holographic reproduction device with at least one light modulation means, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, which is located within a periodicity interval of the reconstruction of the video hologram. The visibility region, together with each object point of the scene to be reconstructed, defines a subhologram and the whole hologram is generated from a superposition of subholograms, wherein in a sequence of image contents the difference subholograms of object points are preferably generated for each picture, differing in regards to the visibility according to the viewer position in sequential images of the sequence. The display device comprises means that provide high-quality video holograms in spite of the data amount being significantly reduced.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: July 23, 2013
    Assignee: Seereal Technologies S.A.
    Inventors: Armin Schwerdtner, Alexander Schwerdtner
  • Patent number: 8411339
    Abstract: A holographic imaging system includes an electrical addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM). A read light is configured to illuminate the OASLM, and a controller is configured to address the EASLM with both positive and negative sub-images and transmit the positive and negative sub-images to the OASLM. The controller is further configured to address the OASLM with an operating voltage, wherein the read light generates a holographic image comprised of diffraction patterns from the positive and negative sub-images.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: April 2, 2013
    Assignee: F. Poszat HU, LLC
    Inventor: Maurice Stanley
  • Patent number: 8400696
    Abstract: A three-dimensional image displaying apparatus comprises a spatial light modulation element having a discrete pixel structure and expressing a hologram, an illumination optical system generating reconstruction light by causing illumination light to enter said spatial light modulation element that expresses the hologram, and a lens as a reconstruction image converting optical system displaying a reconstruction image by producing a virtual image wavefront-converted from the reconstruction light.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: March 19, 2013
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Takahiro Ikeda, Tamiki Takemori
  • Patent number: 8395616
    Abstract: Method for real-time rendering and generating of computer-generated video holograms from three-dimensional image data with depth information, where the position and viewing direction of an observer defines a view of the scene, and where the observer is assigned with at least one virtual observer window, which is situated in an observer plane near the observer eyes, comprising the following process steps: 3D rendering and generation of the depth map of scene section data between two parallel section planes, which are disposed at right angles to the viewing direction of the observer, transformation of the scene section data, repetition of the steps of 3D rendering and transformation, Back-transformation, encoding in pixel values in order to reconstruct the three-dimensional scene.
    Type: Grant
    Filed: April 12, 2007
    Date of Patent: March 12, 2013
    Assignee: SeeReal Technologies S.A.
    Inventor: Alexander Schwerdtner
  • Patent number: 8384973
    Abstract: A method is disclosed for reconstructing a 3D scene made of object points in a holographic display, wherein the reconstruction is visible from a visibility region. Visibility and/or covering of parts of the 3D scene corresponding to the real parameters is realized, with the reconstruction, for a viewer from every place of the visibility region. Processor means generate a spatial point matrix for defining the positions of individual object points, which are assigned predetermined intensity and phase values. Within the visibility region, a complex-value wave front for each single object point is calculated. The intensity values of the object points are multiplied with the associated visibility function, to determine a common modified wave front of the object points, transformed into the plane of a light modulator to calculate modified control values for the object points.
    Type: Grant
    Filed: March 12, 2008
    Date of Patent: February 26, 2013
    Assignee: SeeReal Technologies S.A.
    Inventor: Norbert Leister
  • Patent number: 8358454
    Abstract: Disclosed is a display for the holographic reconstruction of a three-dimensional scene using means which allow a reduction of speckle patterns. Speckle patterns result in the graining of a holographic reconstruction and worsen the quality thereof. The 3D scene is incoherently superimposed with itself chronologically or spatially in the eye of the observer. The modulated wave fronts of each reconstructed object point of the scene are shifted relative to themselves in the reconstruction beam path and superimposed in the eye of the observer. The shifting may occur one-dimensionally and two-dimensionally. Each object point is multiplied with itself in the eye of the observer in accordance with the number of the shifted wave fronts. The various speckle patterns over which the eye of the observer averages are also multiplied. Speckle patterns are reduced and the reconstruction quality is thus increased in holographic displays.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: January 22, 2013
    Assignee: SeeReal Technologies S.A.
    Inventors: Norbert Leister, Grigory Lazarev, Gerald Futterer
  • Patent number: 8325402
    Abstract: A system and method that synchronizes a spatial light modulator (SLM) with a pulsed laser to record a hologram at the repetition rate of the pulsed laser for applications including holographic displays and data storage. The color channel capability of a SLM is utilized to effectively increase the write throughput when the pulsed laser repetition rate LR exceeds the SLM's image refresh rate R. The hogels are encoded on the color channels and concatenated to form a sequence of color images such that the write throughput is equal to the repetition rate LR up to a maximum of N*R. This effectively extends the capability and continued viability of existing inexpensive SLMs.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: December 4, 2012
    Assignees: TIPD, LLC, The Arizona Board of Regents on Behalf of the University of Arizona
    Inventors: Pierre-Alexandre Jean Blanche, Arkady Bablumyan, Nasser N. Peyghambarian
  • Patent number: 8305668
    Abstract: A technique for recording data onto a hologram recording medium using spatial light phase modulation corresponding to the recording data, and a technique for reproducing recorded data by properly reading information on phases recorded on a hologram recording medium. A signal beam having a phase modulation pattern corresponding to recording data and a reference beam having a specific phase modulation pattern are applied to the recording medium. Thus, recording data can be recorded onto the hologram recording medium using phase information. In addition, at the time of reproduction, a reference beam and a direct current (DC) beam, whose phase difference with respect to the reference beam is ?/2, are applied to the hologram recording medium. By reading the reproduction beam to which the DC beam is added, recorded information on phases can be correctly read, and recorded data can be reproduced in accordance with the phase information.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: November 6, 2012
    Assignee: Sony Corporation
    Inventors: Kenji Tanaka, Atsushi Fukumoto
  • Patent number: 8294965
    Abstract: A holographic reconstruction system and method for the three-dimensional reconstruction of object light points of a scene. The system includes spatial light modulation means which modulate light waves capable of interference with at least one video hologram, focusing means which focus the modulated light waves so that a viewer can view the reconstructed object light points of the scene from a visibility region that is thereby produced by focusing, and deflection means which position the visibility region by aligning the modulated light waves. The holographic reconstruction system includes deflection control means for controlling the deflection means to sequentially adjust the visibility region to different contiguous viewing positions, and light controlling means for switching the light waves in synchronicity with the deflection control means.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: October 23, 2012
    Assignee: SeeReal Technologies S.A.
    Inventors: Steffen Buschbeck, Armin Schwerdtner
  • Patent number: 8284469
    Abstract: An apparatus for reading a data page from and/or writing a data page to a holographic storage medium includes a common aperture arrangement of one or more reference beams and an object beam or a reconstructed object beam. One or more spatial light modulators are provided for generating the one or more reference beams by modulating a light beam with a modulation pattern having a spatial frequency higher than the spatial frequency of the data page.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: October 9, 2012
    Assignee: Thomson Licensing
    Inventor: Wolfgang Hossfeld
  • Publication number: 20120250122
    Abstract: A recording plane of a computer-generated hologram that is capable of reconstructing a full-color image and achieving a high resolution is divided by a multiplicity of parallel sections in the horizontal direction to define a multiplicity of areas. Amplitude information and phase information corresponding to different wavelengths which vary periodically in a direction traversing the multiplicity of areas, is recorded in the recording medium. Information about the same portion of the original image is recorded in individual points belonging to the same area, and information about another corresponding portion of the original image is recorded in individual points belonging to another area.
    Type: Application
    Filed: June 13, 2012
    Publication date: October 4, 2012
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Mitsuru KITAMURA, Akiko KITAMURA
  • Patent number: 8275216
    Abstract: 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 holographic image page includes receiving the holographic image page and dividing the holographic image page into a plurality of local image regions. The method further includes generating a local alignment error vector for each local image region, computing a local finite impulse response kernel for each local image region according to the corresponding local alignment error vector, and adjusting misaligned pixels of each local image region using the corresponding local finite impulse response kernel.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: September 25, 2012
    Assignee: InPhase Technologies, Inc.
    Inventors: Mark R. Ayres, Adrian J. Hill
  • Patent number: 8264756
    Abstract: An apparatus for recording holograms on an optical medium, in particular on an optically addressable spatial light modulation device is disclosed. For this purpose, the apparatus comprises an illumination device for emitting light, an optical medium, an image source having at least one modulation element, and an arrangement of microlenses. In this case, the arrangement of microlenses is arranged at a distance from the optical medium in such a way that the image focal points of the microlenses lie on the optical medium, such that the hologram can be generated on the optical medium.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: September 11, 2012
    Assignee: Seereal Technologies S.A.
    Inventors: Jean-Christophe Olaya, Grigory Lazarev
  • Patent number: 8243353
    Abstract: A system and related method for coded aperture sensing, comprising: passing at least one scene wavefront from a target scene through at least one original coded aperture mask onto a focal plane array, producing a diffracted projection of the target scene; and processing the diffracted projection into a representation of the target scene by correlating a function of the diffracted projection with a function of a known array pattern of the at least one original coded aperture mask and by using at least one reconstructing wavefront for holographic reconstructing.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: August 14, 2012
    Assignee: Applied Science Innovations, Inc.
    Inventors: Mikhail Gutin, Xu-Ming Wang
  • Patent number: 8208186
    Abstract: An optical reproducing method. A diffracted light is generated by irradiating a reference light onto a hologram. A combined light is generated by applying a direct-current component formed by a polarized light having a third polarization component with a first polarization plane having a polarization direction orthogonal to the diffracted light and having the same phase as the diffracted light, and a fourth polarization component with a second polarization plane having an opposite phase to the diffracted light, onto the diffracted light. The combined light is separated into a fifth polarization component including a first polarization component and the third polarization component, and a sixth polarization component including a second polarization component and the fourth polarization component. A first reproduced image is reproduced from the separated fifth polarization component, and a second reproduced image is reproduced from the separated sixth polarization component.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: June 26, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Shin Yasuda, Katsunori Kawano
  • Patent number: 8149486
    Abstract: A hologram recording and reproduction method is configured such that the number of values which can be implemented per one pixel is increased from two according to a conventional method to three or more to achieve increase of the data recording capacity. While two values are conventionally represented by two different values of “0” and “1” of the amplitude, for example, phases “0” and “?” are combined with the amplitudes “0” and “1” thereby to make it possible to represent three values of “0,” “1” and “?1” (amplitude “1”×phase “?”). In particular, a two-value data train of “0” and “1” is converted into another data train of three values of “0,” “1” and “?1” in accordance with a rule for encoding determined in advance, and the amplitude “0” is allocated to pixels of the value “0”; the amplitude “1” (phase “0”) is allocated to pixels of the value “1”; and the amplitude “1” and the phase “?” are allocated to pixels of the value “?1,” to carry out recording.
    Type: Grant
    Filed: March 19, 2008
    Date of Patent: April 3, 2012
    Assignee: Sony Corporation
    Inventor: Masaaki Hara
  • Patent number: 8149485
    Abstract: Dynamically reconfigurable holograms with electronically erasable programmable intermediate layers are disclosed. An example apparatus includes first nanowires, each of the first nanowires having protuberances along a length thereof. The example apparatus also includes second nanowires arranged approximately perpendicular to the first nanowires, the protuberances of the first nanowires being approximately parallel to corresponding ones of the second nanowires. In addition, a layer is disposed between the first and second nanowires. The layer is to control refractive indices at nanowire intersections at intersecting ones of the first and second nanowires.
    Type: Grant
    Filed: December 29, 2008
    Date of Patent: April 3, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jingjing Li, Philip J. Kuekes, Shih-Yuan Wang
  • Patent number: 8085452
    Abstract: A holographic imaging system includes an electrical addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM). A read light is configured to illuminate the OASLM, and a controller is configured to address the EASLM with both positive and negative sub-images and transmit the positive and negative sub-images to the OASLM. The controller is further configured to address the OASLM with an operating voltage, wherein the read light generates a holographic image comprised of diffraction patterns from the positive and negative sub-images.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: December 27, 2011
    Assignee: F. Poszat Hu, LLC
    Inventor: Maurice Stanley
  • Patent number: 8072660
    Abstract: A hologram recording apparatus includes a signal-beam spatial light modulating section, a reference-beam spatial light modulating section, and a control unit. A signal beam pattern generates a signal beam. A reference beam pattern generates a reference beam. The control unit controls the shapes of the two beam patterns. A data-recording signal beam pattern is displayed on the signal-beam spatial light modulating section and a data-recording reference beam pattern is displayed on the reference-beam spatial light modulating section so that a data-recording hologram is formed in a predetermined area of a holographic recording medium. An encryption signal beam pattern for encrypting the data-recording hologram is displayed on the signal-beam spatial light modulating section and an encryption reference beam pattern is displayed on the reference-beam spatial light modulating section so that an encryption hologram is formed in the same area as the predetermined area of the holographic recording medium.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: December 6, 2011
    Assignee: Sony Corporation
    Inventors: Mitsuru Toishi, Masaaki Hara
  • Patent number: 8049941
    Abstract: To compensate for an inhomogeneous brightness perception in a holographic reconstruction of 3D-scenes (4), a computing means encodes modulator cells of a SLM with a hologram point data pattern. Multiple bundles of rays illuminate the surface of the SLM and an array of focusing elements (21, 23) directs the bundles of rays to an observer's eye positions. Geometrical and optical properties of the array cause dissimilarly affected illumination regions on the SLM surface. The computing means determine parameters which describe the extent of these effects in combination with an expected spatial filtering at the eye pupil of the observer's eyes. Using these parameters, the computing means estimates which local errors of the reconstruction caused by these dissimilarly affected illumination regions will be perceived by the observer when watching the reconstruction, and corrects the hologram point data pattern such that the reconstruction appears at a corrected brightness uniformity level.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: November 1, 2011
    Assignee: SeeReal Technologies S.A.
    Inventor: Ralf Haussler
  • Patent number: 8035873
    Abstract: A hologram recording method includes generating light of a pattern in which a plurality of unit blocks, which include at least one pixel and express luminance, are arrayed, the pattern being sectioned into a region of a signal beam and a region of a reference beam, and being generated such that the region of the reference beam includes a plurality of unit blocks whose numbers of pixels are different; collecting the generated light at a common optical system, and illuminating it onto an optical recording medium; and recording, as a hologram, data which the signal beam expresses.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: October 11, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsunori Kawano, Jiro Minabe, Koichi Haga, Yasuhiro Ogasawara, Shin Yasuda, Kazuhiro Hayashi, Hisae Yoshizawa, Makoto Furuki
  • Patent number: 7999984
    Abstract: A method to encode information holographically, wherein the method provides information, and generates a plurality of data images, wherein each data image comprises a portion of the information. The method holographically encodes each of the plurality of data images in a holographic data storage medium, generates a plurality of identifiers, and associates a different one of the plurality of identifiers with a different one of the plurality of data images. The method forms a directory image reciting each of plurality of identifiers, encodes the directory image in a non-holographic data storage medium, and holographically encodes the directory image in the holographic data storage medium.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: August 16, 2011
    Assignee: International Business Machines Corporation
    Inventors: Allen Keith Bates, Nils Haustein, Craig Anthony Klein, Henry Zheng Liu, Daniel James Winarski
  • Patent number: 7990594
    Abstract: The present invention relates to a phase mask for holographic data storage, and to a method and an apparatus for reading from and/or writing to holographic storage media using such a phase mask. According to the invention, the phase mask has a plurality of phase cells, whose size is equal to an integer multiple of the size of the pixels of a spatial light modulator of the apparatus. The phase cells have a phase variation on sub-cell scale, which is inverse for essentially half the number of phase cells.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: August 2, 2011
    Assignee: Thomson Licensing
    Inventors: Frank Przygodda, Joachim Knittel
  • Patent number: 7967445
    Abstract: An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance of a projection optical system. Image information is processed by an image processing device, which includes a first and a second image processor. A light modulating device modulates a flux of light emitted by an illumination optical system based on the processed image information. The modulated flux of light is projected on a screen by a projection optical system. If the image information processed by the first image processor in a pixel region is not within a representable modulation range of the light modulating device, the image information is processed by the second image processor.
    Type: Grant
    Filed: November 13, 2007
    Date of Patent: June 28, 2011
    Assignee: Ricoh Company, Ltd.
    Inventors: Yukiko Hamano, Ryosuke Kasahara, Toshiyuki Kawasaki
  • Patent number: 7952776
    Abstract: 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 by a spatial light modulator including a first pixel area for modulating the reference light and a second pixel area for modulating the signal light, a direction of an arrangement period of pixels in the first pixel area being different from that in the second pixel area; a Fourier transform lens subjecting reproduction light to a Fourier transformation; a filter disposed shielding the reference light at a first spatial frequency band and transmitting the signal light at a second spatial frequency band; and a unit for receiving the reproduction light and reading the data page modulated to the signal light included in the reproduction light.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: May 31, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yasuhiro Ogasawara
  • Patent number: 7907773
    Abstract: 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 first image in a holographic data storage medium at a first storage location. The method then generates a second image of the original data, where the second image differs from the first image, and encodes the second image in a holographic data storage medium at a second storage location, where the second storage location differs from the first storage location.
    Type: Grant
    Filed: December 20, 2006
    Date of Patent: March 15, 2011
    Assignee: International Business Machines Corporation
    Inventors: Allen Keith Bates, Nils Haustein, Craig Anthony Klein, Daniel James Winarski
  • Patent number: 7889406
    Abstract: A method to align the write channel portion of a holographic data storage system. The method establishes a write threshold correlation factor, provides a reference beam, and illuminates a holographic data storage medium encoded with a write reference orientation image with the reference beam to generate a write channel alignment data beam including a projected write reference orientation image. The method projects the write channel alignment data beam onto an optical detector, and calculates a first write correlation factor using the projected write reference orientation image, a stored write reference orientation image, and the tangential matched filter. If the method determines that the first write correlation factor is greater than or equal to the write threshold correlation factor, then the method determines that the spatial write channel is properly aligned.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: February 15, 2011
    Assignee: International Business Machines Corporation
    Inventors: Allen Keith Bates, Daniel James Winarski
  • Patent number: 7826114
    Abstract: A hologram recording method is disclosed in which: signal light includes a plurality of arranged reversal regions in which lightness and darkness of plural pixels of a light and dark image is reversed for an intensity distribution of the light and dark image; the signal light is Fourier-transformed; the Fourier-transformed signal light and reference light are illuminated onto an optical recording medium; and the signal light is recorded as a hologram. Also is disclosed an apparatus capable of implementing the hologram recording method, and an optical recording medium usable with the method.
    Type: Grant
    Filed: April 23, 2007
    Date of Patent: November 2, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Jiro Minabe, Yasuhiro Ogasawara, Shin Yasuda, Katsunori Kawano, Koichi Haga, Kazuhiro Hayashi, Hisae Yoshizawa, Makoto Furuki
  • Patent number: 7821692
    Abstract: 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 interference between a signal light and a reference light are recorded in pages includes modulating additional information including information about a page so as to keep the rate of 0s or 1s in binarized data of the additional information constant and recording the page having the modulated additional information added thereto on the holographic storage medium.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: October 26, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyun-soo Park, Jin-Han Kim
  • Patent number: 7796312
    Abstract: A holographic recording apparatus 10 realizes multilevel gray-scale recording by: controlling a reflection type spatial light modulator (DMD 18D) via a control unit 24 so that an object beam in an object optical system 18 is reflected in an exposure direction so as to be incident on a holographic recording medium 16 or in a non-exposure direction so as not to be incident thereon selectively pixel by pixel in accordance with a data page to be recorded; and making (N+1) levels of gradation exposure with a single exposure time t1 given by dividing t0 by N, where t0 is an exposure time necessary for rendering a single pixel of the data page as an ON pixel, and N is an integer of not less than 2.
    Type: Grant
    Filed: December 21, 2004
    Date of Patent: September 14, 2010
    Assignee: TDK Corporation
    Inventors: Takuya Tsukagoshi, Jiro Yoshinari, Hideaki Miura, Tetsuro Mizushima
  • Patent number: RE46224
    Abstract: A CMOS image sensor having two ASPs can reduce increasing design difficulty as arising from a pixel array becoming larger and larger. The image sensor includes a selection circuit for transmitting outputs of CDS circuits through four divided buses to reduce parasitic loading and achieve high-speed operation. Then, the selecting circuit transmits red and blue pixels to a first ASP, and transmits green pixels to a second ASP, so as to relax the specification requirements of the ASP.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: November 29, 2016
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Kuo-Yu Chou