Patents by Inventor David Ruhoff
David Ruhoff 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: 11190749Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: June 16, 2020Date of Patent: November 30, 2021Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20200314405Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: June 16, 2020Publication date: October 1, 2020Applicant: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 10721453Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: August 7, 2019Date of Patent: July 21, 2020Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20190364260Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: August 7, 2019Publication date: November 28, 2019Applicant: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20190356918Abstract: Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly matching the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the “quantization parameter” or “QP”. The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range to reduced contrast regions of an image to extend the precision with which the low-contrast portions are compression coded.Type: ApplicationFiled: March 25, 2019Publication date: November 21, 2019Inventors: Gary A. Demos, David Ruhoff
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Patent number: 10419739Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: February 25, 2019Date of Patent: September 17, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20190191143Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: February 25, 2019Publication date: June 20, 2019Applicant: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 10264256Abstract: Methods, systems, and computer programs for improved quality video compression. Image quality from MPEG-style video coding may be improved by preserving a higher number of bits during intermediate encoding and decoding processing steps. Problems of inverse discrete cosine transform (IDCT) mismatch can be eliminated by exactly matching the IDCT function numerical algorithm of the decoder to the IDCT function numerical algorithm used for the decoding portion of the encoder. Also included is an application of high precision compression to wide dynamic range images by extending the range of the “quantization parameter” or “QP”. The extension of QP may be accomplished either by increasing the range of QP directly, or indirectly through a non-linear transformation. Also included is an application of extended intermediate processing precision and an extended QP range to reduced contrast regions of an image to extend the precision with which the low-contrast portions are compression coded.Type: GrantFiled: December 10, 2013Date of Patent: April 16, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Gary A. Demos, David Ruhoff
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Patent number: 10264235Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: July 25, 2018Date of Patent: April 16, 2019Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 10158835Abstract: Enhancing image dynamic range is described. An input video signal that is represented in a first color space with a first color gamut, which is related to a first dynamic range, is converted to a video signal that is represented in a second color space with a second color gamut. The second color space is associated with a second dynamic range. At least two (e.g., three) color-related components of the converted video signal are mapped over the second dynamic range.Type: GrantFiled: January 19, 2016Date of Patent: December 18, 2018Assignee: Dolby Laboratories Licensing CorporationInventors: Walter Gish, Zhen Li, Donald Pian, Christopher J. Vogt, Hyung-Suk Kim, David Ruhoff
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Patent number: 10136118Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: July 16, 2009Date of Patent: November 20, 2018Assignee: Dolby Laboratories Licensing CorporationInventors: Walter Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20180332269Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: July 25, 2018Publication date: November 15, 2018Applicant: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 10038891Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: May 2, 2018Date of Patent: July 31, 2018Assignee: Dolby Laboratories Licensing CoporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 9992476Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: January 22, 2018Date of Patent: June 5, 2018Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20180146185Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: January 22, 2018Publication date: May 24, 2018Applicant: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20180070071Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: November 9, 2017Publication date: March 8, 2018Applicant: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 9912931Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: November 9, 2017Date of Patent: March 6, 2018Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 9843785Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: June 16, 2017Date of Patent: December 12, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Publication number: 20170289520Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: ApplicationFiled: June 16, 2017Publication date: October 5, 2017Inventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris
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Patent number: 9712801Abstract: Stereoscopic images are subsampled and placed in a “checkerboard” pattern in an image. The image is encoded in a monoscopic video format. The monoscopic video is transmitted to a device where the “checkerboard” is decoded. Portions of the checkerboard (e.g., “black” portions) are used to reconstruct one of the stereoscopic images and the other portion of the checkerboard (e.g., “white” portions) are used to reconstruct the other image. The subsamples are, for example, taken from the image in a location coincident to the checkerboard position in which the subsamples are encoded.Type: GrantFiled: November 16, 2015Date of Patent: July 18, 2017Assignee: Dolby Laboratories Licensing CorporationInventors: Walter J. Husak, David Ruhoff, Alexandros Tourapis, Athanasios Leontaris