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Patent Agency Ranking
公开(公告)号：US11460808B2
公开(公告)日：2022-10-04
申请号：US16895108
申请日：2020-06-08
Applicant: SEEREAL TECHNOLOGIES S.A.
Inventor： Enrico Zschau , Armin Schwerdtner , Bo Kroll , Alexander Schwerdtner
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.
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公开(公告)号：US11635731B2
公开(公告)日：2023-04-25
申请号：US16451437
申请日：2019-06-25
Applicant: SEEREAL TECHNOLOGIES S.A.
Inventor： Enrico Zschau
Abstract: An apparatus and a method for optimized calculation of 2D sub-holograms for object points of a three-dimensional scene and a pipeline for real-time calculation of holograms are provided. The invention shortens the calculation time of a hologram for representing a three-dimensional scene and/or to reduce the calculation complexity of such a hologram. This is achieved by a 2D sub-hologram of an object point, which has image elements of the spatial light modulator, comprises a half 1D sub-hologram, where the radius of each image element is determined and each image element of the 2D sub-hologram is fixedly assigned to at least one image element of the half 1D sub-hologram with identical or similar radius by way of an electronic circuit, by a method for encoding a hologram, and by a pipeline on the basis of FPGA and/or ASIC.
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公开(公告)号：US10678188B2
公开(公告)日：2020-06-09
申请号：US15978916
申请日：2018-05-14
Applicant: SEEREAL TECHNOLOGIES S.A.
Inventor： Enrico Zschau , Armin Schwerdtner , Bo Kroll , Alexander Schwerdtner
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.
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公开(公告)号：US10520889B2
公开(公告)日：2019-12-31
申请号：US15241327
申请日：2016-08-19
Applicant: SEEREAL TECHNOLOGIES S.A.
Inventor： Enrico Zschau , Nils Pfeifer
Abstract: Method for computing the code for the reconstruction of three-dimensional scenes which include objects which partly absorb light or sound. The method can be implemented in a computing unit. In order to reconstruct a three-dimensional scene as realistic as possible, the diffraction patterns are computed separately at their point of origin considering the instances of absorption in the scene. The method can be used for the representation of three-dimensional scenes in a holographic display or volumetric display. Further, it can be carried out to achieve a reconstruction of sound fields in an array of sound sources.
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公开(公告)号：US10353344B2
公开(公告)日：2019-07-16
申请号：US14896085
申请日：2014-06-04
Applicant: SEEREAL TECHNOLOGIES S.A.
Inventor： Enrico Zschau
Abstract: An apparatus and a method for optimized calculation of 2D sub-holograms for object points of a three-dimensional scene and a pipeline for real-time calculation of holograms are provided. The invention shortens the calculation time of a hologram for representing a three-dimensional scene and/or to reduce the calculation complexity of such a hologram. This is achieved by a 2D sub-hologram of an object point, which has image elements of the spatial light modulator, comprises a half 1D sub-hologram, where the radius of each image element is determined and each image element of the 2D sub-hologram is fixedly assigned to at least one image element of the half 1D sub-hologram with identical or similar radius by way of an electronic circuit, by a method for encoding a hologram, and by a pipeline on the basis of FPGA and/or ASIC.
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