Patents by Inventor Sheng Qu

Sheng Qu 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: 20250133241
    Abstract: Tensor-Product B-splines (TPB) have been shown to improve video quality when used to represent reshaping functions to map reshaped standard dynamic range content into high dynamic range (HDR) content; however, TPB prediction is computationally intensive and may not be supported by legacy devices. Methods and systems for backwards-compatible signaling of TPB-related metadata and a fast TPB prediction method are presented to overcome both of these limitations. Computation overhead for a TPB-based 3D look-up table is reduced by using temporary two-dimensional arrays. A remapping of the most significant bits of a legacy bit-depth parameter allows for backwards compatibility.
    Type: Application
    Filed: September 8, 2022
    Publication date: April 24, 2025
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Harshad Kadu, Guan-Ming Su, Sheng Qu, Per Jonas Andreas Klittmark, Hariharan Ganapathy Kathirvelu
  • Publication number: 20250005068
    Abstract: Embodiments described herein provide a unified container format for delivering different multimedia applications. One embodiment provides a data structure utilized for implementing a plurality of multimedia applications. The data structure includes a first metadata level including low-level metadata used to perform operations associated with media data in a bitstream. The data structure includes a second metadata level including mid-level metadata used to apply operation metadata to render the media data. The data structure includes a third metadata level including upper-level metadata used to utilize the low-level metadata and the mid-level metadata to deliver the plurality of multimedia applications.
    Type: Application
    Filed: December 19, 2022
    Publication date: January 2, 2025
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming SU, Tao CHEN, Sheng QU, Samir N. HULYALKAR
  • Publication number: 20240328252
    Abstract: A motor drive unit for a system for raising and lowering a covering material (e.g., a window treatment system) may be configured to execute a test procedure for determining if the system is spring-balanced properly. The motor drive unit may be powered from at least one battery. The system may comprise one or more lift assistance springs configured to provide variable lift assistance to the motor drive unit for raising and lowering the covering material. During the test procedure, the motor drive unit may be configured to control the covering material between a lowered position and a raised position and determine a magnitude of an input power of the motor drive unit during the movement. The motor drive unit may determine that the system requires more or less lift assistance springs based on the input power, and communicate an indication that the system requires more or less lift assistance springs.
    Type: Application
    Filed: March 29, 2024
    Publication date: October 3, 2024
    Applicant: Lutron Technology Company LLC
    Inventors: Jonathan Edward Ely, David A. Leymeister, Ben Matzke, Maxwell Ross Naar, Sheng Qu, Robert J. Thompson
  • Publication number: 20220381085
    Abstract: A motorized window treatment may comprise an antenna that allows for wireless communication. The motorized window treatment may comprise a roller tube, a motor drive unit, and at least one mounting bracket. The roller tube may be configured to windingly receive a flexible material and to be rotated to raise and lower the flexible material. The mounting bracket may be configured to support a bearing assembly of the motor drive unit to allow the roller tube to rotate with respect to the mounting bracket. The bearing assembly may be located between the roller tube and the mounting bracket, so as to form a gap between the roller tube and the mounting bracket. The antenna may comprise an electrical conductor wrapped around the motor drive unit adjacent to the gap between the roller tube and the mounting bracket.
    Type: Application
    Filed: May 26, 2022
    Publication date: December 1, 2022
    Applicant: Lutron Techology Company LLC
    Inventors: Marissa Diehl, David A. Kirby, Sheng Qu, John M. Steinmetz
  • Patent number: 11272213
    Abstract: Sequence-level parameters are generated for an image frame sequence including sequence-level indicators for indicating metadata types present for each image frame in the sequence of image frames. Frame-present parameters are generated for a specific image frame in the sequence including frame-present indicators corresponding to the metadata types as indicated in the sequence-level parameters. The frame-present indicators identify first metadata types for which metadata parameter values are to be encoded in a coded bitstream as metadata payloads. The image frame sequence, the sequence-level parameters, the frame-present parameters and the metadata payloads are encoded in the coded bitstream. A recipient device can generate, from the specific image frame based partly on the metadata parameter values determined for the first metadata types, a target display image for a target display.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 8, 2022
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Neeraj J. Gadgil, Tao Chen, Sheng Qu
  • Publication number: 20200413099
    Abstract: Sequence-level parameters are generated for an image frame sequence including sequence-level indicators for indicating metadata types present for each image frame in the sequence of image frames. Frame-present parameters are generated for a specific image frame in the sequence including frame-present indicators corresponding to the metadata types as indicated in the sequence-level parameters. The frame-present indicators identify first metadata types for which metadata parameter values are to be encoded in a coded bitstream as metadata payloads. The image frame sequence, the sequence-level parameters, the frame-present parameters and the metadata payloads are encoded in the coded bitstream. A recipient device can generate, from the specific image frame based partly on the metadata parameter values determined for the first metadata types, a target display image for a target display.
    Type: Application
    Filed: September 21, 2018
    Publication date: December 31, 2020
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming SU, Neeraj J. GADGIL, Tao CHEN, Sheng QU
  • Patent number: 10587897
    Abstract: Coding syntaxes in compliance with same or different VDR specifications may be signaled by upstream coding devices such as VDR encoders to downstream coding devices such as VDR decoders in a common vehicle in the form of RPU data units. VDR coding operations and operational parameters may be specified as sequence level, frame level, or partition level syntax elements in a coding syntax. Syntax elements in a coding syntax may be coded directly in one or more current RPU data units under a current RPU ID, predicted from other partitions/segments/ranges previously sent with the same current RPU ID, or predicted from other frame level or sequence level syntax elements previously sent with a previous RPU ID. A downstream device may perform decoding operations on multi-layered input image data based on received coding syntaxes to construct VDR images.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 10, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sheng Qu, Peng Yin, Yan Ye, Yuwen He, Walter Gish, Guan-Ming Su, Yufei Yuan, Samir Hulyalkar
  • Patent number: 10575005
    Abstract: In a method to code and transmit scalable HDR video signals, HDR signals are processed and encoded in the IPT-PQ color space to generate a base layer at reduced spatial resolution and/or dynamic range, and an enhancement layer with a residual signal. A signal reshaping block before the base layer encoder allows for improved coding of HDR signals using a reduced bit depth. A decoder can use a BL decoder and backward reshaping to generate a decoded BL HDR signal at a reduced dynamic range and/or spatial resolution, or it can combine the decoded BL HDR signal and the EL stream to generate a decoded HDR signal at full dynamic range and full resolution.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: February 25, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Samir N. Hulyalkar, David Brooks
  • Patent number: 10553255
    Abstract: Methods and systems for generating and applying scene-stable metadata for a video data stream are disclosed herein. A video data stream is divided or partitioned into scenes and a first set of metadata may be generated for a given scene of video data. The first set of metadata may be any known metadata as a desired function of video content (e.g., luminance). The first set of metadata may be generated on a frame-by-frame basis. In one example, scene-stable metadata may be generated that may be different from the first set of metadata for the scene. The scene-stable metadata may be generated by monitoring a desired feature with the scene and may be used to keep the desired feature within an acceptable range of values. This may help to avoid noticeable and possibly objectionably visual artifacts upon rendering the video data.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: February 4, 2020
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Robin Atkins, Raymond Yeung, Sheng Qu
  • Patent number: 10298923
    Abstract: In layered Visual Dynamic range (VDR) coding, inter-layer prediction requires several color-format transformations between the input VDR and Standard Dynamic Range (SDR) signals. Coding and decoding architectures are presented wherein inter-layer prediction is performed in the SDR-based color format, thus reducing computational complexity in both the encoder and the decoder, without compromising coding efficiency or coding quality.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 21, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Walter C. Gish, Zhen Li
  • Patent number: 10237552
    Abstract: Inter-color image prediction is based on multi-channel multiple regression (MMR) models. Image prediction is applied to the efficient coding of images and video signals of high dynamic range. MMR models may include first order parameters, second order parameters, and cross-pixel parameters. MMR models using extension parameters incorporating neighbor pixel relations are also presented. Using minimum means-square error criteria, closed form solutions for the prediction parameters are presented for a variety of MMR models.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: March 19, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Hubert Koepfer, Yufei Yuan, Samir Hulyalkar
  • Patent number: 10194771
    Abstract: Provided is a non-stick cooking container, comprising a container body, in which the container body comprises a ribbed inner surface, the ribbed inner surface comprising a plurality of ribs and grooves arranged at regular intervals, a non-stick coating covering the surfaces of the ribs and the grooves, the ribs comprising a top surface, the grooves comprising a bottom surface. It is difficult to scratch or chip off the non-stick coating of the non-stick cooking container, which allows the cooking container to retain the non-stick properties over a long period.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: February 5, 2019
    Assignee: SEB S.A.
    Inventors: Ji Qiang Fu, Yi Sheng Qu, Jun Chen
  • Patent number: 10182235
    Abstract: In a decoder, a processor extracts a control map of false contour filtering from a part of a multi-layer video signal that includes a low dynamic range image mapped from an original high-dynamic range (HDR) image. It determines one or more filter parameters for a sparse finite-impulse-response (FIR) filter, where the one or more filter parameters relate to at least in part on the control map of false contour filtering and a predicted image predicted from the low dynamic range image. It applies the sparse FIR filter to filter pixel values in a portion of the predicted image based at least in part on the control map of false contour filtering, and it reconstructs a version of the original HDR image based at least in part on the portion of the predicted image as filtered by the FIR filter.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 15, 2019
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Qian Chen, Peng Yin, Sheng Qu
  • Patent number: 10136162
    Abstract: Coding syntaxes in compliance with same or different VDR specifications may be signaled by upstream coding devices such as VDR encoders to downstream coding devices such as VDR decoders in a common vehicle in the form of RPU data units. VDR coding operations and operational parameters may be specified as sequence level, frame level, or partition level syntax elements in a coding syntax. Syntax elements in a coding syntax may be coded directly in one or more current RPU data units under a current RPU ID, predicted from other partitions/segments/ranges previously sent with the same current RPU ID, or predicted from other frame level or sequence level syntax elements previously sent with a previous RPU ID. A downstream device may perform decoding operations on multi-layered input image data based on received coding syntaxes to construct VDR images.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: November 20, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Sheng Qu, Peng Yin, Yan Ye, Yuwen He, Walter Gish, Guan-Ming Su, Yufei Yuan, Samir Hulyalkar
  • Publication number: 20180278930
    Abstract: Inter-color image prediction is based on multi-channel multiple regression (MMR) models. Image prediction is applied to the efficient coding of images and video signals of high dynamic range. MMR models may include first order parameters, second order parameters, and cross-pixel parameters. MMR models using extension parameters incorporating neighbor pixel relations are also presented. Using minimum means-square error criteria, closed form solutions for the prediction parameters are presented for a variety of MMR models.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 27, 2018
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Guan-Ming SU, Sheng QU, Hubert KOEPFER, Yufei YUAN, Samir HULYALKAR
  • Patent number: 10056042
    Abstract: Systems and methods are disclosed for filtering metadata to be used in display management. Given an input video stream and input metadata comprising at least one of minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the input metadata are filtered using a temporal filter to generate filtered metadata, wherein the filtering is based only on metadata for input frames in the same scene. Methods for temporal filtering based on an exponential moving average filter or a look-ahead sliding window filter are presented, including methods for scene-change detection using the input metadata.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: August 21, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Robin Atkins, Gregory John Ward, Samir N. Hulyalkar, Guan-Ming Su, Sheng Qu
  • Publication number: 20180220144
    Abstract: In a method to code and transmit scalable HDR video signals, HDR signals are processed and encoded in the IPT-PQ color space to generate a base layer at reduced spatial resolution and/or dynamic range, and an enhancement layer with a residual signal. A signal reshaping block before the base layer encoder allows for improved coding of HDR signals using a reduced bit depth. A decoder can use a BL decoder and backward reshaping to generate a decoded BL HDR signal at a reduced dynamic range and/or spatial resolution, or it can combine the decoded BL HDR signal and the EL stream to generate a decoded HDR signal at full dynamic range and full resolution.
    Type: Application
    Filed: July 20, 2016
    Publication date: August 2, 2018
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Samir N. Hulyalkar, David Brooks
  • Patent number: 10021390
    Abstract: Inter-color image prediction is based on multi-channel multiple regression (MMR) models. Image prediction is applied to the efficient coding of images and video signals of high dynamic range. MMR models may include first order parameters, second order parameters, and cross-pixel parameters. MMR models using extension parameters incorporating neighbor pixel relations are also presented. Using minimum means-square error criteria, closed form solutions for the prediction parameters are presented for a variety of MMR models.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: July 10, 2018
    Assignee: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Sheng Qu, Hubert Koepfer, Yufei Yuan, Samir Hulyalkar
  • Publication number: 20180192062
    Abstract: In a decoder, a processor extracts a control map of false contour filtering from a part of a multi-layer video signal that includes a low dynamic range image mapped from an original high-dynamic range (HDR) image. It determines one or more filter parameters for a sparse finite-impulse-response (FIR) filter, where the one or more filter parameters relate to at least in part on the control map of false contour filtering and a predicted image predicted from the low dynamic range image. It applies the sparse FIR filter to filter pixel values in a portion of the predicted image based at least in part on the control map of false contour filtering, and it reconstructs a version of the original HDR image based at least in part on the portion of the predicted image as filtered by the FIR filter.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 5, 2018
    Applicant: Dolby Laboratories Licensing Corporation
    Inventors: Guan-Ming Su, Qian Chen, Peng Yin, Sheng Qu
  • Publication number: 20180144692
    Abstract: Systems and methods are disclosed for filtering metadata to be used in display management. Given an input video stream and input metadata comprising at least one of minimum, average, or maximum luminance values of the video frames in the video stream, values of a function of the input metadata are filtered using a temporal filter to generate filtered metadata, wherein the filtering is based only on metadata for input frames in the same scene. Methods for temporal filtering based on an exponential moving average filter or a look-ahead sliding window filter are presented, including methods for scene-change detection using the input metadata.
    Type: Application
    Filed: May 11, 2016
    Publication date: May 24, 2018
    Applicant: DOLBY LABORATORIES LICENSING CORPORATION
    Inventors: Robin ATKINS, Gregory John WARD, Samir N. HULYALKAR, Guan-Ming SU, Sheng QU