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).

  • Video decoder with reduced dynamic range transform with inverse transform shifting memory
    Patent number: 9807395
    Abstract: A method for decoding video includes receiving quantized coefficients representative of a block of video representative of a plurality of pixels. The quantized coefficients are dequantized based upon a function of a remainder. The dequantized coefficients are inverse transformed to determine a decoded residue.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 31, 2017
    Assignee: Dolby International AB
    Inventors: Louis Joseph Kerofsky, Kiran Misra, Christopher A. Segall
  • DEVICE FOR DECODING A VIDEO BITSTREAM
    Publication number: 20170310960
    Abstract: A system for decoding a video bitstream includes receiving a reference picture set associated with a frame including a set of reference picture identifiers. The reference picture set identifies one or more reference pictures to be used for inter-prediction of the frame based upon its associated least significant bits of a picture order count based upon the reference picture identifiers. The one or more reference pictures is a second or greater previous frame to the frame having the matching reference picture identifier.
    Type: Application
    Filed: July 10, 2017
    Publication date: October 26, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Sachin G. DESHPANDE, Christopher A. SEGALL
  • Video decoding methods and video encoding methods
    Patent number: 9794559
    Abstract: A system for decoding a video bitstream includes receiving a reference picture set associated with a frame including a set of reference picture identifiers. The reference picture set identifies one or more reference pictures to be used for inter-prediction of the frame based upon its associated least significant bits of a picture order count based upon the reference picture identifiers. The one or more reference pictures is a second or greater previous frame to the frame having the matching reference picture identifier.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: October 17, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Sachin G. Deshpande, Christopher A. Segall
  • Nested entropy encoding
    Patent number: 9794570
    Abstract: Methods and systems for improving coding decoding efficiency of video by providing a syntax modeler, a buffer, and a decoder. The syntax modeler may associate a first sequence of symbols with syntax elements. The buffer may store tables, each represented by a symbol in the first sequence, and each used to associate a respective symbol in a second sequence of symbols with encoded data. The decoder decodes the data into a bitstream using the second sequence retrieved from a table.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: October 17, 2017
    Assignee: Dolby International AB
    Inventors: Yeping Su, Christopher A. Segall
  • Adaptive therapeutic light control system
    Patent number: 9782605
    Abstract: A system for influencing a state of a user including a light source for emitting light influencing the state of the user and a light controller selectively controlling the emission of the light. The emission may include at least one of, the spectrum of said light; the duration of said light; the distribution of said light; the intensity of said light; and the timing of said light. The analysis engine provides a signal to the light controller indicating a desired emission of the light.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: October 10, 2017
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Gary A. Feather, M. Ibrahim Sezan, Christopher A. Segall
  • Nested Entropy Encoding
    Publication number: 20170289549
    Abstract: Methods and systems for improving coding decoding efficiency of video by providing a syntax modeler, a buffer, and a decoder. The syntax modeler may associate a first sequence of symbols with syntax elements. The buffer may store tables, each represented by a symbol in the first sequence, and each used to associate a respective symbol in a second sequence of symbols with encoded data. The decoder decodes the data into a bitstream using the second sequence retrieved from a table.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 5, 2017
    Inventors: Yeping Su, Christopher A. Segall
  • Video decoder with enhanced CABAC decoding
    Patent number: 9774863
    Abstract: A decoder receives a bitstream containing quantized coefficients representative of blocks of video representative of a plurality of pixels and decodes the bitstream using context adaptive binary arithmetic coding. The context adaptive binary arithmetic coding decodes the current syntax element using the first mode if the current syntax element is intra-coded and selects between a first set of probable modes and a second set of probable modes, where the first set of probable modes are more likely than the second set of probable modes. The context adaptive binary arithmetic coding decodes the current syntax element using the second mode if the current syntax element is intra-coded and if selected from among one of the second set of probable modes.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: September 26, 2017
    Inventors: Kiran Misra, Christopher A. Segall
  • SYSTEM FOR TERMINAL RESOLUTION ADAPTATION FOR DEVICES
    Publication number: 20170251255
    Abstract: The present invention relates to a display system for displaying an image on a display comprising: (a) said display system includes physical information related to a physical resolution of physical pixels for said displaying said image on said display; (b) said display system includes logical information related to an application graphics plane that includes a graphics plane resolution of logical pixels; (c) said display system selects said image to be displayed within said application graphics plane on said display from a set of available images based upon said logical information related to said graphics plane resolution of logical pixels.
    Type: Application
    Filed: October 5, 2015
    Publication date: August 31, 2017
    Inventors: Sachin G. DESHPANDE, Kiran MISRA, Christopher A. SEGALL
  • Buffer compression for motion vector competition
    Patent number: 9749657
    Abstract: Deriving a motion vector of a current block, in a current frame, including: generating a motion vector predictor candidate list including a set of first motion vectors and a second motion vector, wherein a first motion vector of the set belongs to a block adjacent to the current block in the current frame, and the second motion vector is a temporal motion vector of a pixel at a modified position (x?, y?) in a previous frame, the modified position (x?, y?) being derived by modifying a top-left position (x, y) of the current block. The method also includes deriving the modified position (x?, y?) using arithmetic shift operations; setting the second motion vector equal to a motion vector at the modified position (x?, y?) of the pixel in the previous frame; and deriving the motion vector of the current block using a motion vector predictor and a difference motion vector.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: August 29, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Christopher A. Segall
  • High throughput coding for CABAC in HEVC
    Patent number: 9743116
    Abstract: A system utilizes a high throughput coding mode for CABAC in HEVC. The system may include an electronic device configured to obtain a bit stream; determine whether to decode level information of the sub-block of a block from the bit stream by using a first or a second decoding based on a characteristic of the sub-block; if the characteristic of the sub-block satisfies a predetermined condition, decoding level information of the sub-block from the bit stream by using the first decoding, and if the characteristic of the sub-block does not satisfy the predetermined condition, decoding level information of the sub-block from the bit stream by using the second decoding that is different from the first decoding.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: August 22, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Seung-Hwan Kim, Christopher A. Segall
  • GOLOMB-RICE/EG coding technique for CABAC in HEVC
    Patent number: 9743111
    Abstract: A system utilizing a high throughput coding mode for CABAC in HEVC is described. The system may include an electronic device configured to obtain a block of data to be encoded using an arithmetic based encoder; to generate a sequence of syntax elements using the obtained block; to compare an Absolute-3 value of the sequence or a parameter associated with the Absolute-3 value to a preset value; and to convert the Absolute-3 value to a codeword using a first code or a second code that is different than the first code, according to a result of the comparison.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: August 22, 2017
    Assignee: Dolby International AB
    Inventors: Seung-Hwan Kim, Louis J. Kerofsky, Christopher A. Segall
  • Image enhancement using semantic components
    Patent number: 9734566
    Abstract: A system for determining a high resolution output image that includes receiving a low resolution image and determining an intermediate high resolution image. The system detects semantic features based upon the input image and selects corresponding semantic components from a database based upon the detected semantic features. The first intermediate high resolution image is modified based upon information from the corresponding semantic components to determine the high resolution output image.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: August 15, 2017
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Anustup Kumar Choudhury, Christopher A. Segall
  • System for video super resolution using semantic components
    Patent number: 9727974
    Abstract: A method for increasing the resolution of a series of low resolution frames of a low resolution video sequence to a series of high resolution frames of a high resolution video sequence includes receiving the series of low resolution frames of the video sequence. The system determines a first plurality of semantically relevant key points of a first low resolution frame of the series of low resolution frames and determines a second plurality of semantically relevant key points of a second low resolution frame of the series of low resolution frames. The system temporally processes the first plurality of key points based upon the second plurality of key points to determine a more temporally consistent set of key points for the first plurality of key points.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: August 8, 2017
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Xu Chen, Anustup Kumar A. Choudhury, Christopher A. Segall, Petrus J. L. Van Beek
  • METHODS, DEVICES AND SYSTEMS FOR PARALLEL VIDEO ENCODING AND DECODING
    Publication number: 20170223385
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Application
    Filed: April 20, 2017
    Publication date: August 3, 2017
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • Methods and systems for estimation of additive noise
    Patent number: 9721333
    Abstract: Aspects of the present invention are related to systems and methods for estimation of additive noise in an image or in a video sequence. An additive-noise estimate may be computed based on a first significant peak in a histogram of standard-deviation values of patches of an image-channel image associated with an input image.
    Type: Grant
    Filed: October 17, 2013
    Date of Patent: August 1, 2017
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Anustup Kumar Choudhury, Christopher A. Segall
  • Methods, devices and systems for parallel video encoding and decoding
    Patent number: 9681144
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 13, 2017
    Assignee: Dolby International AB
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • Methods, devices and systems for parallel video encoding and decoding
    Patent number: 9681143
    Abstract: A method for decoding a video bitstream is disclosed. The method comprises: entropy decoding a first portion of a video bitstream, wherein first portion of video bitstream is associated with a video frame, thereby producing a first portion of decoded data; entropy decoding a second portion of video bitstream, wherein second portion of video bitstream is associated with video frame, thereby producing a second portion of decoded data, wherein entropy decoding second portion of video bitstream is independent of entropy decoding first portion of video bitstream; and reconstructing a first portion of video frame associated with video bitstream using first portion of decoded data and second portion of decoded data.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: June 13, 2017
    Assignee: Dolby International AB
    Inventors: Jie Zhao, Christopher A. Segall, Louis J. Kerofsky
  • JAGGED EDGE REDUCTION USING KERNEL REGRESSION
    Publication number: 20170140510
    Abstract: An apparatus may include a processor and memory to store instructions to direct the processor to: detect edges in an image, including portions of the image that correspond to a jagged edge configuration; selectively apply kernel regression to portions of the image that correspond to the jagged edge configuration; and output a corrected image.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Applicant: Sharp Laboratories of America, Inc.
    Inventors: Mohammad Aghagolzadeh, Christopher A. Segall
  • High throughput binarization (HTB) method for CABAC in HEVC
    Patent number: 9654139
    Abstract: Provided is an electronic device configured for high throughput binarization mode. The electronic device includes a processor and instructions stored in memory that is in electronic communication with the processor. The electronic device obtains a block of transformed and quantized coefficients (TCQs). The electronic device determines whether a high throughput binarization mode condition is met. If the condition is met, the electronic device uses the high throughput binarization mode to process the block. If the condition is not met, the electronic device does not use the high throughput binarization mode to process the block. The electronic device transmits the generated first or second bitstream to a decoder.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: May 16, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Seung-Hwan Kim, Kiran Misra, Louis Joseph Kerofsky, Christopher A. Segall
  • DECODING A PICTURE BASED ON A REFERENCE PICTURE SET ON AN ELECTRONIC DEVICE
    Publication number: 20170127075
    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: November 25, 2016
    Publication date: May 4, 2017
    Inventors: Jie ZHAO, Christopher A. SEGALL, Sachin G. DESHPANDE