Patents by Inventor Kui Wang

Kui Wang 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).

  • SUPPLEMENTAL ENHANCEMENT INFORMATION MESSAGE CONSTRAINTS
    Publication number: 20240048749
    Abstract: A method implemented by a video coding apparatus. The method includes determining that a scalability dimension information (SDI) supplemental enhancement information (SEI) message precedes a multiview acquisition information (MAI) SEI message in decoding order whenever an access unit (AU) contains both the SDI SEI message and the MAI SEI message; and performing a conversion between a video and a bitstream of the video based on the SDI SEI message and the MAI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: October 9, 2023
    Publication date: February 8, 2024
    Inventors: Ye-Kui Wang, Yang Wang, Li Zhang
  • Techniques For Generation Of A Conformant Output Sub-Bitstream
    Publication number: 20240048736
    Abstract: Examples of video encoding methods and apparatus and video decoding methods and apparatus are described. An example method of video processing includes performing a conversion between a video including multiple layers and a bitstream of the video according to a rule, wherein the rule specifies that, in a first process of sub-bitstream extraction to output a first output sub-bitstream, the first output sub-bitstream is extracted without removing network abstraction layer (NAL) units of a particular type and having a particular NAL unit header identifier value, and wherein the particular type includes an access unit delimiter (AUD) NAL unit.
    Type: Application
    Filed: October 17, 2023
    Publication date: February 8, 2024
    Inventor: Ye-kui Wang
  • SUBLAYERS INFORMATION IN VIDEO CODING
    Publication number: 20240048689
    Abstract: Methods and apparatus for processing of video are described. A video processing method includes performing a conversion between a video including multiple layers of one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that a reference picture referred to by each inter-layer reference picture entry in a reference picture list of a slice of a current picture of a current layer satisfies a constraint. The constraint is at least one of: (a) the reference picture is an intra random access (IRAP) picture or (b) the reference picture has a temporal identifier that is less than or equal to a certain value that is a function of a maximum allowed value of a video layer to which slices from the current layer can reference. The maximum allowed value is indicated in a syntax element.
    Type: Application
    Filed: October 11, 2023
    Publication date: February 8, 2024
    Inventors: Ye-kui Wang, Li Zhang
  • Conditional Signaling of Video Coding Syntax Elements
    Publication number: 20240048771
    Abstract: Systems, methods and apparatus for video processing are described. The video processing may include video encoding, video decoding, or video transcoding. One example method of video processing includes performing a conversion between a video including one or more pictures and a bitstream of the video according to a format rule. The format rule specifies that a first syntax element that indicates whether motion vector difference for a particular reference picture list (RPL) is indicated is conditionally included in the bitstream based on (i) whether a second syntax element indicating whether an RPL information is included in a picture header and/or (ii) a number of reference pictures in the particular RPL in case that the RPL information is present in the picture header.
    Type: Application
    Filed: September 28, 2023
    Publication date: February 8, 2024
    Inventors: Li Zhang, Ye-kui Wang, Kai Zhang
  • Luma mapping with chroma scaling adaptation parameter set in video coding
    Patent number: 11895294
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a slice and a luma mapping with chroma scaling (LMCS) adaptation parameter set (APS) including LMCS parameters. The mechanism further includes determining that the LMCS APS is referenced in data related to the slice. The mechanism further includes decoding the slice using LMCS parameters from the LMCS APS based on the reference to the LMCS APS. The mechanism further includes forwarding the slice for display as part of a decoded video sequence.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: February 6, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, F N U Hendry, Jianle Chen
  • Output of prior pictures for pictures starting a new coded video sequence in video coding
    Patent number: 11895312
    Abstract: A method of decoding a coded video bitstream is provided. The method includes receiving the coded video bitstream, wherein the coded video bitstream contains a gradual decoding refresh (GDR) picture and a first flag having a first value; setting a second value of a second flag equal to the first value of the first flag; emptying any previously-decoded pictures from a decoded picture buffer (DPB) based on the second flag having the second value; and decoding a current picture after the DPB has been emptied. A corresponding method of encoding is also provided.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: February 6, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Ye-Kui Wang
  • SCALABILITY DIMENSION INFORMATION CONSTRAINTS
    Publication number: 20240040139
    Abstract: A method implemented by a video coding apparatus. The method includes inferring a scalability dimension information (SDI) auxiliary identifier (ID) is equal to a first value when an SDI auxiliary information flag is equal to the first value; and performing a conversion between a video and a bitstream of the video based on the value inferred. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 1, 2024
    Inventors: Ye-Kui Wang, Yang Wang, Li Zhang
  • SCALABILITY DIMENSION INFORMATION IN VIDEO CODING
    Publication number: 20240040135
    Abstract: A method of processing video data includes using a scalability dimension information (SDI) supplemental enhancement information (SEI) message to indicate an SDI view identifier length minus L syntax element; and converting between a video media file and the bitstream based on the SDI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: September 28, 2023
    Publication date: February 1, 2024
    Inventors: Yang Wang, Ye-Kui Wang, Li Zhang
  • SCALABILITY DIMENSION INFORMATION SUPPLEMENTAL ENHANCEMENT INFORMATION MESSAGE
    Publication number: 20240040140
    Abstract: A method implemented by a video coding apparatus. The method includes determining that a scalability dimension information (SDI) supplemental enhancement information (SEI) message provides SDI for each layer in a current coded video sequence (CVS); and performing a conversion between a video and a bitstream of the video based on the SDI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: October 10, 2023
    Publication date: February 1, 2024
    Inventors: Ye-Kui Wang, Yang Wang, Li Zhang
  • SIGNALLING OF PICTURE INFORMATION IN ACCESS UNITS
    Publication number: 20240040138
    Abstract: Methods, systems, and devices for signaling picture information in access units in video bitstream processing are disclosed. An example method of video processing includes performing a conversion between a video comprising one or more pictures and a bitstream of the video. The bitstream conforms to a format rule, which specifies that a flag and a syntax element, when included in the bitstream, are access unit (AU) specific. The flag indicates, in response to a current AU not being a first AU in the bitstream in a decoding order, whether a nominal coded picture buffer (CPB) removal time of the current AU is determined relative to (a) a nominal CPB removal time of a previous AU associated with a buffering period supplemental enhancement information (SEI) message, or (b) a nominal CPB removal time of the current AU.
    Type: Application
    Filed: October 3, 2023
    Publication date: February 1, 2024
    Inventor: Ye-kui Wang
  • MULTIVIEW ACQUISITION INFORMATION SUPPLEMENTAL ENHANCEMENT INFORMATION
    Publication number: 20240040157
    Abstract: A method implemented by a video coding apparatus. The method includes determining that a multiview acquisition information (MAI) supplemental enhancement information (SEI) message is present in a first access unit (AU) of a coded video sequence (CVS) whenever any MAI SEI message is present in any AU of the CVS; and performing a conversion between a video and a bitstream of the video based on the MAI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: October 9, 2023
    Publication date: February 1, 2024
    Inventors: Ye-Kui Wang, Yang Wang, Li Zhang
  • External stream representation properties
    Patent number: 11888913
    Abstract: A mechanism for processing video data is disclosed. An essential property (EssentialProperty) of a Dynamic Adaptive Streaming over Hypertext transfer protocol (DASH) representation is determined. The EssentialProperty indicates that the representation is an external stream representation (ESR). A conversion is performed between a visual media data and a media presentation based on the based on the ESR.
    Type: Grant
    Filed: April 14, 2022
    Date of Patent: January 30, 2024
    Inventor: Ye-kui Wang
  • Tile group assignment for raster scan and rectangular tile groups in video coding
    Patent number: 11889087
    Abstract: A video coding mechanism is disclosed. The mechanism includes partitioning a picture into a plurality of tiles. A number of the tiles are included in a tile group. The mechanism determines whether the tile group is a raster scan tile group or a rectangular tile group. The number of tiles in the tile group is determined based on whether the tile group is the raster scan tile group or the rectangular tile group. The tiles are encoded into a bitstream based on the tile group. The bitstream is stored for communication toward a decoder.
    Type: Grant
    Filed: December 2, 2022
    Date of Patent: January 30, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: FNU Hendry, Ye-Kui Wang
  • Adaptation parameter set types in video coding
    Patent number: 11889030
    Abstract: A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a first adaptation parameter set (APS) network abstraction layer (NAL) unit including an adaptive loop filter (ALF) type, a second APS NAL unit including a scaling list type, a third APS NAL unit including a luma mapping with chroma scaling (LMCS) type, and a slice. The mechanism further includes obtaining ALF parameters from the first APS NAL unit, obtaining scaling list parameters from the second APS NAL unit, and LMCS parameters from the third APS NAL unit. The mechanism further includes decoding the slice using the ALF parameters, the scaling list parameters, and the LMCS parameter. The mechanism further includes forwarding the slice for display as part of a decoded video sequence.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: January 30, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Ye-Kui Wang, Fnu Hendry, Jianle Chen
  • Constrains for syntax elements of adaptation parameter set
    Patent number: 11889119
    Abstract: Methods, systems, and apparatuses for video processing are described. A method for processing video includes performing a conversion between a video and a bitstream of the video according to a format rule, wherein the format rule specifies that values of one or more general constraint flags at a first level in the bitstream control occurrence of one or more syntax elements at a sequence parameter set (SPS) level or a picture header (PH) level or a slice header (SH) level.
    Type: Grant
    Filed: August 29, 2022
    Date of Patent: January 30, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Ye-kui Wang, Li Zhang, Kai Zhang, Kui Fan
  • Constraints on reference picture lists
    Patent number: 11889060
    Abstract: Methods and apparatus for processing of video are described. The processing may include video encoding, decoding, or transcoding. One example video processing method includes performing a conversion between a video including one or more pictures including one or more subpictures and a bitstream of the video. The bitstream conforms to a format rule that specifies that a subpicture cannot be a random access type of subpicture in response to the subpicture not being a leading subpicture of an intra random access point subpicture. The leading subpicture precedes the intra random access point subpicture in output order.
    Type: Grant
    Filed: October 20, 2022
    Date of Patent: January 30, 2024
    Assignee: BYTEDANCE INC.
    Inventor: Ye-kui Wang
  • Wavefront parallel processing for tile, brick, and slice
    Patent number: 11889095
    Abstract: A method of decoding includes encountering an end of tile bit with a first value and byte alignment bits in a video bitstream, which indicate that a current coding tree block (CTB) is a last CTB in a tile; encountering an end of CTB row bit with the first value and the byte alignment bits in the video bitstream, which indicate that waveform parallel processing (WPP) is enabled and that the current CTB is the last CTB in a CTB row but not the last CTB in the tile; and reconstructing the plurality of CTBs in the tile based on the end of tile bit with the first value, the end of CTB row bit with the first value, and the byte alignment bits.
    Type: Grant
    Filed: November 3, 2021
    Date of Patent: January 30, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Fnu Hendry, Ye-Kui Wang
  • USING SCALABILITY DIMENSION INFORMATION
    Publication number: 20240031608
    Abstract: A method of processing video data includes using a scalability dimension information (SDI) supplemental enhancement information (SEI) message to indicate which primary layers are associated with an auxiliary layer when auxiliary information is present in a bitstream, and converting between a video media file and the bitstream based on the SDI SEI message. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: September 28, 2023
    Publication date: January 25, 2024
    Inventors: Yang Wang, Ye-Kui Wang, Li Zhang
  • ELECTRON TRANSPORT MATERIAL AND FABRICATING METHOD THEREOF, AND ORGANIC LIGHT-EMITTING DIODE
    Publication number: 20240032419
    Abstract: An electron transport material and a fabricating method thereof according to embodiments of the present application are described, which relate to displays. The electron transport material has high electron mobility, which can improve a luminous efficiency of an OLED device. The fabricating method is simple to operate, and a performance of the organic light-emitting diode fabricating by using the electron transport material is also good.
    Type: Application
    Filed: June 3, 2021
    Publication date: January 25, 2024
    Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Kui WANG
  • DISPLAY PANEL AND DISPLAY DEVICE
    Publication number: 20240021133
    Abstract: The present application provides a display panel and a display device. the display panel includes a display region and a light-transmitting display region. The display region includes a first pixel unit. The light-transmitting display region includes a second pixel unit. The second pixel unit includes a first subpixel, a second subpixel, and a third subpixel. At least one subpixel of the first subpixel, the second subpixel, and the third subpixel includes at least two light-emitting layers connected in series. The display panel and the display device provided by the present application can increase a lifespan of the subpixel in the light-transmitting display region and reduce a power consumption of the display panel and the display device.
    Type: Application
    Filed: May 31, 2021
    Publication date: January 18, 2024
    Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Kui WANG