Patents by Inventor Alexander Schwerdtner

Alexander Schwerdtner 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).

  • Publication number: 20200301362
    Abstract: A method for generating video holograms in real time for a holographic playback device comprising at least one light modulator means, into which a scene divided into object points is encoded as an entire 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 defining a subhologram together with each object point of the scene to be reconstructed, and the entire hologram being generated from a superposition of contributions of subholograms, is characterized in that for each object point the contributions of the subholograms in the entire reconstruction of the scene can be determined from at least one look-up table.
    Type: Application
    Filed: June 8, 2020
    Publication date: September 24, 2020
    Inventors: Enrico ZSCHAU, Armin SCHWERDTNER, Bo KROLL, Alexander SCHWERDTNER
  • Patent number: 10761481
    Abstract: Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: September 1, 2020
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Robert Missbach, Alexander Schwerdtner
  • Patent number: 10678188
    Abstract: A method for generating video holograms in real time for a holographic playback device comprising at least one light modulator means, into which a scene divided into object points is encoded as an entire 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 defining a subhologram together with each object point of the scene to be reconstructed, and the entire hologram being generated from a superposition of contributions of subholograms, is characterized in that for each object point the contributions of the subholograms in the entire reconstruction of the scene can be determined from at least one look-up table.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: June 9, 2020
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Enrico Zschau, Armin Schwerdtner, Bo Kroll, Alexander Schwerdtner
  • Publication number: 20180259905
    Abstract: A method for generating video holograms in real time for a holographic playback device comprising at least one light modulator means, into which a scene divided into object points is encoded as an entire 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 defining a subhologram together with each object point of the scene to be reconstructed, and the entire hologram being generated from a superposition of contributions of subholograms, is characterized in that for each object point the contributions of the subholograms in the entire reconstruction of the scene can be determined from at least one look-up table.
    Type: Application
    Filed: May 14, 2018
    Publication date: September 13, 2018
    Inventors: Enrico ZSCHAU, Armin SCHWERDTNER, Bo KROLL, Alexander SCHWERDTNER
  • Publication number: 20180217554
    Abstract: Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.
    Type: Application
    Filed: March 22, 2018
    Publication date: August 2, 2018
    Inventors: Bo KROLL, Robert MISSBACH, Alexander SCHWERDTNER
  • Patent number: 9946224
    Abstract: Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: April 17, 2018
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Bo Kroll, Robert Missbach, Alexander Schwerdtner
  • Patent number: 9829860
    Abstract: A holographic display device for computing a video hologram of a scene is disclosed. The scene comprises a multitude of object points. The holographic display device comprises at least one light modulator means.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: November 28, 2017
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Alexander Schwerdtner
  • Publication number: 20170153600
    Abstract: A holographic display device for computing a video hologram of a scene is disclosed. The scene comprises a multitude of object points. The holographic display device comprises at least one light modulator means.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 1, 2017
    Inventor: Alexander SCHWERDTNER
  • Patent number: 9581965
    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a sub-hologram and the whole hologram is generated from a superposition of sub-holograms, wherein the complex hologram values of a sub-hologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: February 28, 2017
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Alexander Schwerdtner
  • Publication number: 20160291544
    Abstract: Disclosed is a holographic display including a spatial light modulator (SLM) with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.
    Type: Application
    Filed: May 6, 2016
    Publication date: October 6, 2016
    Inventors: Bo KROLL, Robert MISSBACH, Alexander SCHWERDTNER
  • Patent number: 9368052
    Abstract: Disclosed is a holographic display including a spatial light modulator with pixels, the SLM pixels being on a substrate, the SLM including circuitry which is on the same substrate as the SLM pixels, the circuitry operable to perform calculations which provide an encoding of the SLM.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: June 14, 2016
    Assignee: SeeReal Technologies S.A.
    Inventors: Bo Kroll, Robert Missbach, Alexander Schwerdtner
  • Publication number: 20150323899
    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a sub-hologram and the whole hologram is generated from a superposition of sub-holograms, wherein the complex hologram values of a sub-hologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
    Type: Application
    Filed: July 20, 2015
    Publication date: November 12, 2015
    Inventor: Alexander Schwerdtner
  • Patent number: 9086681
    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. 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 the complex hologram values of a subhologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: July 21, 2015
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Alexander Schwerdtner
  • Publication number: 20130250049
    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. 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 the complex hologram values of a subhologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
    Type: Application
    Filed: May 6, 2013
    Publication date: September 26, 2013
    Applicant: SEEREAL TECHNOLOGIES S.A.
    Inventor: Alexander SCHWERDTNER
  • 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: 8487980
    Abstract: Holographic display with which voice and holographic image over internet protocol (VHIOIP) services or communications are provided.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: July 16, 2013
    Assignee: Seereal Technologies S.A.
    Inventors: Bo Kroll, Robert Missbach, Alexander Schwerdtner
  • Patent number: 8437056
    Abstract: An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. 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 the complex hologram values of a subhologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: May 7, 2013
    Assignee: SeeReal Technologies S.A.
    Inventor: Alexander Schwerdtner
  • Patent number: 8437057
    Abstract: A method is disclosed for rendering and generating color video holograms for a holographic reproduction device having at least one light modulation means, wherein a scene divided into object points is encoded as a whole hologram and which can be seen from as a reconstruction a visibility region, which is located within a periodicity interval of the reconstruction of the video hologram. The visibility region defines a subhologram together with each object point of the scene to be reconstructed and the whole hologram is formed from a superposition of subholograms, wherein a 3D rendering graphic pipeline structures a scene represented by image data with depth information into object points and determines and provides at least color and depth information for the object points.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: May 7, 2013
    Assignee: Seereal Technologies S.A.
    Inventors: Armin Schwerdtner, Alexander Schwerdtner
  • 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: 8368743
    Abstract: The invention relates to an interface and circuit arrangement, in particular for transmitting digital image data to at least one holographic encoding unit (HEU), which generates complex hologram values from image data containing depth information and/or encodes the pixel values for controlling at least one light modulator element of a holographic reproduction device. The invention is characterized in that the interface transmits the depth map of the image data and the color map of said image data separately via transmission means (L1, L2) and communication protocols, said depth map comprising the depth information and the color map the color information of scanned images in an image sequence.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: February 5, 2013
    Assignee: SeeReal Technologies S.A.
    Inventors: Alexander Schwerdtner, Armin Schwerdtner