Patents by Inventor Christopher Segall

Christopher Segall 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).

  • Context initialization based on decoder picture buffer
    Patent number: 9060173
    Abstract: A method for decoding a video frame includes receiving a slice in a video decoder, identifying the slice as one of at least a first predicted slice and a second predicted slice, receiving information used to determine a context initialization method corresponding to the slice, and initializing, based on the received information, one of a first context initialization method and a second context initialization method associated with the slice, and decoding the video frame using the slice and one of the first context initialization method and the second context initialization method. The first context initialization method is a method for initializing a context associated with the first predicted slice and the second context initialization method is a method for initializing a context associated with the second predicted slice.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: June 16, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kiran Misra, Christopher A. Segall
  • Multi layered image enhancement technique
    Patent number: 9053531
    Abstract: A system for enhancing an input image including receiving an input image and filtering the input image with a plurality of non-linear smoothing filters providing a respective plurality of filtered outputs. The system processes a plurality of the filtered outputs with respect to at least one of another of the filtered outputs and the input image to determine a plurality of detail layers. The system filters the plurality of detail layers with a plurality of non-linear smoothing filters providing a respective plurality of smoothed layers. The system adjusts the plurality of smoothed layers in such a manner that regions closer to an edge are enhanced to a lesser extent than regions farther from an edge and combining the adjusted the smoothed layers to provide an enhanced output image.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: June 9, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Hae-Jong Seo, Christopher A. Segall
  • Motion-compensated temporal filtering based on variable filter parameters
    Patent number: 9036695
    Abstract: Systems and devices for, and methods of, motion-compensated temporal filtering based on variable filter parameters. A method embodiment includes (a) determining, by a processor having memory, a pixel-related residue image based on a set of differences between a current pixel intensity of a current frame and a corresponding pixel intensity of a previous frame, wherein the corresponding pixel intensity is augmented by a motion-compensated vector of the previous frame; (b) determining an intensity weight based on the determined pixel-related residue image and a temporal filtering parameter; and (c) filtering the pixel intensity of the current frame based on the determined intensity weight and the motion compensated vector of the previous frame.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: May 19, 2015
    Assignee: SHARP LABORATORIES OF AMERICA, INC.
    Inventors: Junlan Yang, Yeping Su, Christopher A. Segall
  • Multi layered image enhancement technique
    Patent number: 9002133
    Abstract: A system for enhancing an input image including receiving an input image and filtering the input image with a plurality of non-linear smoothing filters providing a respective plurality of filtered outputs. The system processes a plurality of the filtered outputs with respect to at least one of another of the filtered outputs and the input image to determine a plurality of detail layers. The system filters the plurality of detail layers with a plurality of non-linear smoothing filters providing a respective plurality of smoothed layers. The system adjusts the plurality of smoothed layers in such a manner that regions closer to an edge are enhanced to a lesser extent than regions farther from an edge and combining the adjusted the smoothed layers to provide an enhanced output image.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: April 7, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Hae-Jong Seo, Christopher A. Segall
  • Methods and systems for inter-layer image prediction signaling
    Patent number: 8953677
    Abstract: Embodiments of the present invention comprise systems and methods for predicting high dynamic range (HDR) image blocks with block-specific prediction data, where the systems and methods may comprise low dynamic range (LDR) image data and HDR image data for a target image block, where a scaled, offset LDR image block may be combined with HDR residual image block to form an HDR image block corresponding to the target image block.
    Type: Grant
    Filed: January 22, 2014
    Date of Patent: February 10, 2015
    Assignee: Sharp Laboratories of America, Inc.
    Inventor: Christopher A. Segall
  • DECODING A PICTURE BASED ON A REFERENCE PICTURE SET ON AN ELECTRONIC DEVICE
    Publication number: 20150010058
    Abstract: A method for decoding a picture on an electronic device is described. The method includes obtaining a bitstream. The method also includes obtaining a current picture. The method further includes obtaining a relative reference picture set (RPS) parameter. The method additionally includes initializing an index value. Furthermore, the method includes processing another RPS parameter based on the index value. The method also includes decoding the current picture.
    Type: Application
    Filed: September 22, 2014
    Publication date: January 8, 2015
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Jie ZHAO, Christopher A. SEGALL, Sachin G. DESHPANDE
  • DECODING A PICTURE BASED ON A REFERENCE PICTURE SET ON AN ELECTRONIC DEVICE
    Publication number: 20150003527
    Abstract: A method for decoding a picture on an electronic device is described. The method includes obtaining a bitstream. The method also includes obtaining a current picture. The method further includes obtaining a relative reference picture set (RPS) parameter. The method additionally includes initializing an index value. Furthermore, the method includes processing another RPS parameter based on the index value. The method also includes decoding the current picture.
    Type: Application
    Filed: September 19, 2014
    Publication date: January 1, 2015
    Inventors: Jie Zhao, Christopher A. Segall, Sachin G. Deshpande
  • Method of parallel video coding based on scan order
    Patent number: 8879619
    Abstract: A system encoding and decoding video that uses a parallel encoding and decoding technique.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: November 4, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Christopher A. Segall, Jie Zhao
  • Method of parallel video coding based on same sized blocks
    Patent number: 8873617
    Abstract: A system encoding and decoding video that uses a parallel encoding and decoding technique.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: October 28, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Christopher A. Segall, Jie Zhao
  • Decoding a picture based on a reference picture set on an electronic device
    Patent number: 8867852
    Abstract: A method for decoding a picture on an electronic device is described. The method includes obtaining a bitstream. The method also includes obtaining a current picture. The method further includes obtaining a relative reference picture set (RPS) parameter. The method additionally includes initializing an index value. Furthermore, the method includes processing another RPS parameter based on the index value. The method also includes decoding the current picture.
    Type: Grant
    Filed: January 20, 2012
    Date of Patent: October 21, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Jie Zhao, Christopher A. Segall, Sachin G. Deshpande
  • Method of parallel video coding based on mapping
    Patent number: 8855188
    Abstract: A system encoding and decoding video that uses a parallel encoding and decoding technique.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: October 7, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Christopher A. Segall, Jie Zhao
  • Tracking a reference picture based on a designated picture on an electronic device
    Patent number: 8855433
    Abstract: A method for tracking a reference picture on an electronic device is described. The method includes receiving a bitstream. The method also includes decoding a portion of the bitstream to produce a decoded reference picture. The method further includes tracking the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing based on a designated picture. The method additionally includes decoding a picture based on the decoded reference picture.
    Type: Grant
    Filed: November 1, 2011
    Date of Patent: October 7, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kiran Misra, Sachin G. Deshpande, Christopher A. Segall
  • Method of parallel video coding based on block size
    Patent number: 8848779
    Abstract: A system encoding and decoding video that uses a parallel encoding and decoding technique.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: September 30, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Christopher A. Segall, Jie Zhao
  • Method of parallel video coding based upon prediction type
    Patent number: 8837577
    Abstract: A system encoding and decoding video that uses a parallel encoding and decoding technique.
    Type: Grant
    Filed: July 15, 2010
    Date of Patent: September 16, 2014
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Christopher A. Segall, Jie Zhao
  • TRACKING A REFERENCE PICTURE ON AN ELECTRONIC DEVICE
    Publication number: 20140254672
    Abstract: A method for tracking a reference picture on an electronic device is described. The method includes receiving a bitstream. The method also includes decoding a portion of the bitstream to produce a decoded reference picture. The method further includes tracking the decoded reference picture in a decoded picture buffer (DPB) with reduced overhead referencing. The method additionally includes decoding a picture based on the decoded reference picture.
    Type: Application
    Filed: May 21, 2014
    Publication date: September 11, 2014
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Kiran Misra, Sachin G. Deshpande, Christopher A. Segall
  • VIDEO DECODER PARALLELIZATION FOR TILES
    Publication number: 20140254671
    Abstract: A method for decoding video includes receiving a frame of the video that includes at least one slice and at least one tile. Each of the at least one slice and the at least one tile are not all aligned with one another. Each of the at least one slice is characterized that it is decoded independently of the other the at least one slice. Each of the at least one tile is characterized that it is a rectangular region of the frame and having coding units for the decoding arranged in a raster scan order. The at least one tile of the frame are collectively arranged in a raster scan order of the frame.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 11, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kiran MISRA, Christopher A. SEGALL
  • VIDEO DECODER PARALLELIZATION FOR TILES
    Publication number: 20140247881
    Abstract: A method for decoding video includes receiving a frame of the video that includes at least one slice and at least one tile. Each of the at least one slice and the at least one tile are not all aligned with one another. Each of the at least one slice is characterized that it is decoded independently of the other the at least one slice. Each of the at least one tile is characterized that it is a rectangular region of the frame and having coding units for the decoding arranged in a raster scan order. The at least one tile of the frame are collectively arranged in a raster scan order of the frame.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 4, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kiran MISRA, Christopher A. SEGALL
  • VIDEO DECODER PARALLELIZATION FOR TILES
    Publication number: 20140247882
    Abstract: A method for decoding video includes receiving a frame of the video that includes at least one slice and at least one tile. Each of the at least one slice and the at least one tile are not all aligned with one another. Each of the at least one slice is characterized that it is decoded independently of the other the at least one slice. Each of the at least one tile is characterized that it is a rectangular region of the frame and having coding units for the decoding arranged in a raster scan order. The at least one tile of the frame are collectively arranged in a raster scan order of the frame.
    Type: Application
    Filed: May 16, 2014
    Publication date: September 4, 2014
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Kiran MISRA, Christopher A. SEGALL
  • Methods, devices and systems for parallel video encoding and decoding
    Patent number: 8824541
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion (112-1) of a video bitstream (52), wherein first portion (112-1) of video bitstream is associated with a video frame (110), thereby producing a first portion (112-1) of decoded data; entropy decoding a second portion (112-2) of video bitstream (52), wherein second portion (112-2) of video bitstream (52) is associated with video frame (110), thereby producing a second portion (112-2) of decoded data, wherein entropy decoding second portion (112-2) of video bitstream (52) is independent of entropy decoding first portion (112-1) of video bitstream (52); and reconstructing a first portion (112-1) of video frame (110) associated with video bitstream (52) using first portion (112-1) of decoded data and second portion (112-2) of decoded data.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: September 2, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • MULTI LAYERED IMAGE ENHANCEMENT TECHNIQUE
    Publication number: 20140241642
    Abstract: A system for enhancing an input image including receiving an input image and filtering the input image with a plurality of non-linear smoothing filters providing a respective plurality of filtered outputs. The system processes a plurality of the filtered outputs with respect to at least one of another of the filtered outputs and the input image to determine a plurality of detail layers. The system filters the plurality of detail layers with a plurality of non-linear smoothing filters providing a respective plurality of smoothed layers. The system adjusts the plurality of smoothed layers in such a manner that regions closer to an edge are enhanced to a lesser extent than regions farther from an edge and combining the adjusted the smoothed layers to provide an enhanced output image.
    Type: Application
    Filed: February 28, 2013
    Publication date: August 28, 2014
    Applicant: SHARP LABORATORIES OF AMERICA, INC.
    Inventors: Hae-Jong SEO, Christopher A. SEGALL