Patents by Inventor Li Zhang

Li Zhang 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).

  • 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
  • Techniques for decoding or coding images based on multiple intra-prediction modes
    Patent number: 11889097
    Abstract: Aspects include a method, apparatus and computer-readable medium of decoding video or blocks of an image, including receiving a bitstream of the image, deriving, for a block of the image in the bitstream, multiple intra-prediction modes (IPMs) to use in decoding the block, determining, based on the multiple IPMs, a final predictor to use in decoding the block, and decoding the block using the final predictor. Other aspects include method, apparatus and computer-readable medium for similarly encoding video or blocks of an image.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: January 30, 2024
    Assignee: LEMON INC.
    Inventors: Yang Wang, Kai Zhang, Li Zhang, Yuwen He, Hongbin Liu
  • Gradient computation in bi-directional optical flow
    Patent number: 11889108
    Abstract: Gradient computation in Bi-directional optical flow are described. In a representative aspect, a method of video processing including: modifying temporal gradients in a motion vectors refinement process of a video block or sub-blocks within the video block; and performing the motion vectors refinement process of the video block or the sub-blocks within the video block based on the modified temporal gradients.
    Type: Grant
    Filed: April 8, 2021
    Date of Patent: January 30, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • Unified open-circuit fault-tolerant control method for vector control drive system and direct torque control drive system of five-phase permanent magnet fault tolerant motor
    Patent number: 11888419
    Abstract: A unified open-circuit fault-tolerant control method for a vector control (VC) drive system and a direct torque control (DTC) drive system of a five-phase permanent magnet fault-tolerant motor are provided. The control method adopts a unified open-circuit fault-tolerant control strategy. The unified open-circuit fault-tolerant control strategy includes: obtaining a predetermined torque, obtaining predetermined direct-axis and quadrature-axis voltages, analyzing a fault-tolerant mechanism to obtain fault-tolerant currents, obtaining winding phase voltages in a fault mode based on the fault-tolerant mechanism, and obtaining fault-tolerant voltages based on a back-electromagnetic force (EMF). The unified open-circuit fault-tolerant control strategy suitable for the VC drive system and the DTC drive system is proposed based on chaotic pulse width modulation (CPWM).
    Type: Grant
    Filed: March 22, 2021
    Date of Patent: January 30, 2024
    Assignee: JIANGSU UNIVERSITY
    Inventors: Li Zhang, Xiaoyong Zhu, Lei Xu, Chao Zhang
  • 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
  • DUPLICATE PARTITIONING PREVENTION
    Publication number: 20240031613
    Abstract: A mechanism and method for processing video data is disclosed. The video processing method includes determining whether to enable a second partitioning scheme for coding of a current video unit according to a rule. The method includes performing a conversion between a video media data and a bitstream based on the rule.
    Type: Application
    Filed: September 28, 2023
    Publication date: January 25, 2024
    Inventors: Kai Zhang, Li Zhang, Zhipin Deng, Na Zhang, Yang Wang
  • MULTI-CHANNEL RADIOGRAPHIC INSPECTION DEVICE
    Publication number: 20240027369
    Abstract: A radiographic inspection device is provided, including: a plurality of inspection channels, a scanning apparatus, a driving apparatus and a controller. The plurality of inspection channels are arranged side by side, and each inspection channel is configured to carry an object to be inspected. The scanning apparatus includes a radiation source mounted outside the plurality of inspection channels, and a receiving apparatus mounted outside the plurality of inspection channels and configured to receive a radiation beam emitted from the radiation source. The driving apparatus is configured to drive the radiation source and the receiving apparatus to move to a vicinity of each inspection channel. The controller is configured to control the scanning apparatus moved to the vicinity of one of the plurality of inspection channels to scan the object in the one of the plurality of inspection channels.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 25, 2024
    Inventors: Li ZHANG, Qingping HUANG, Mingzhi HONG, Zinan 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
  • TABLET COMPRISING MODOFLANER AS AN ACTIVE COMPONENT
    Publication number: 20240025855
    Abstract: The present invention relates to a crystalline modification of Modoflaner 6-fluoro-N-(3-(2-iodo-4-(perfluoropropan-2-yl)-6-(trifluoromethyl)phenylcarbamoyl)-2-fluorophenyl)nicotinamide of formula (I):
    Type: Application
    Filed: November 16, 2021
    Publication date: January 25, 2024
    Inventors: Anja FÖRSTER, Fabian SIMONS, Li ZHANG, Xiawei JIANG, Britta OLENIK, Sylvia DWORACEK
  • Intra-Prediction on Non-dyadic Blocks
    Publication number: 20240031565
    Abstract: A mechanism for processing video data implemented by a video coding apparatus is disclosed. The mechanism determines whether a block is dyadic or non-dyadic. The mechanism also enables a coding tool associated with intra prediction when the block is determined to be dyadic. The mechanism also disables the coding tool when the block is determined to be non-dyadic. A conversion between a visual media data and a bitstream is performed by applying intra prediction to the block.
    Type: Application
    Filed: September 27, 2023
    Publication date: January 25, 2024
    Inventors: Kai Zhang, Li Zhang, Zhipin Deng, Na Zhang, Yang Wang
  • Multi-parameters based intra prediction
    Patent number: 11882291
    Abstract: A method for video processing is provided. The method includes determining, for a conversion between a current video block of a video that is a chroma block and a coded representation of the video, multiple sets of parameters, wherein each set of parameters defines a cross-component linear model (CCLM) and is derived from a corresponding group of chroma samples at corresponding chroma sample positions; determining, based on the multiple sets of parameters, parameters for a final CCLM; and performing the conversion based on the final CCLM.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: January 23, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu, Yue Wang
  • Direction-based prediction for intra block copy in video coding
    Patent number: 11882287
    Abstract: A method of visual media processing includes determining, for a conversion between a current video block of visual media data and a bitstream representation of the current video block, a buffer that stores reference samples for prediction in an intra block copy mode; for a sample spatially located at location of the current video block relative to an upper-left position of a coding tree unit including the current video block and having a block vector, computing a corresponding reference in the buffer at a reference location, wherein the reference location is determined using the block vector and the location; and upon determining that the reference location lies outside the buffer, re-computing the reference location based at least in part on a location of the current video block relative to the coding tree unit including the current video block.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: January 23, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Jizheng Xu, Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Bayesian image denoising method based on distribution constraint of noisy images
    Patent number: 11880903
    Abstract: Embodiments of the present disclosure provide a Bayesian image denoising method based on a distribution constraint of noiseless images from a distribution of noisy images. The method includes: determining a distribution constraint of noiseless images from a distribution of noisy images; and performing Bayesian denoising on noisy images based on the distribution constraint of noiseless images.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: January 23, 2024
    Assignee: TSINGHUA UNIVERSITY
    Inventors: Yuxiang Xing, Li Zhang, Hewei Gao, Zhi Deng
  • Inspection method and system
    Patent number: 11880971
    Abstract: An inspection method includes the following steps: identifying a plurality of patterns within an image; and comparing the plurality of patterns with each other for measurement values thereof. The above-mentioned inspection method uses the pattern within the image as a basis for comparison; therefore, measurement values of the plurality of pixels constructing the pattern can be processed with statistical methods and then compared, and the false rate caused by variation of a few pixels is decreased significantly. An inspection system implementing the above-mentioned method is also disclosed.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: January 23, 2024
    Assignee: ASML Netherlands B.V.
    Inventors: Wei Fang, Zhao-Li Zhang, Jack Jau
  • Inter layer prediction with different coding block size
    Patent number: 11882271
    Abstract: Several techniques for video encoding and video decoding are described. One example method includes performing a conversion between a video unit of a current picture of a video and a bitstream of the video according to a rule. The rule specifies that, for a given picture to be available as a reference picture whose motion information is used for the conversion, the given picture has a same coding tree unit size or a same coding tree block size as the current picture.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: January 23, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Li Zhang
  • Position based mode derivation in reduced secondary transforms for video
    Patent number: 11882274
    Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video unit of a video and a coded representation of the video, a default intra prediction mode for the video unit coded using a certain intra prediction mode such that a prediction block of the current video block is generated without extrapolating neighboring pixels of the current video block along a direction; and performing the conversion based on the determining.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: January 23, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Palette Mode With Intra Block Copy Prediction
    Publication number: 20240022741
    Abstract: A video processing method is described. The method includes determining, for a conversion between a video unit of a video and a coded representation of the video, a maximum number of entries of a palette of representative values used during the conversion according to a rule; and performing the conversion using the palette, and wherein the rule specifies the maximum number of entries according to a characteristic of the video unit.
    Type: Application
    Filed: September 18, 2023
    Publication date: January 18, 2024
    Inventors: Weijia Zhu, Li Zhang, Jizheng Xu
  • PARAMETER DATA SHARING FOR MULTI-LEARNER TRAINING OF MACHINE LEARNING APPLICATIONS
    Publication number: 20240020582
    Abstract: A machine receives a first set of global parameters from a global parameter server. Multiple learner processors in the machine execute an algorithm that models an entity type using the first set of global parameters and a mini-batch of data known to describe the entity type. The machine generates a consolidated set of gradients that describes a direction for the first set of global parameters in order to improve an accuracy of the algorithm in modeling the entity type when using the first set of global parameters and the mini-batch of data. The machine transmits the consolidated set of gradients to the global parameter server. The machine then receives a second set of global parameters from the global parameter server, where the second set of global parameters is a modification of the first set of global parameters based on the consolidated set of gradients.
    Type: Application
    Filed: July 19, 2023
    Publication date: January 18, 2024
    Inventors: Minwei Feng, YUFEI REN, Yandong Wang, Li Zhang, Wei Zhang
  • INTRA BLOCK COPY BUFFER AND PALETTE PREDICTOR UPDATE
    Publication number: 20240022717
    Abstract: Methods and an apparatus for video processing are described. One example method includes determining, for a conversion between a video block of a video and a bitstream of the video, that the video block satisfies a condition. The video block is coded in the bitstream using an intra block copy mode. The method further includes performing the conversion based on the determining. Here, due to the video block satisfying the condition, a portion of an intra block copy buffer is reset during the conversion.
    Type: Application
    Filed: August 30, 2023
    Publication date: January 18, 2024
    Inventors: Jizheng Xu, Li Zhang, Kai Zhang, Hongbin Liu
  • CONSTRAINTS ON PARTITIONING OF VIDEO BLOCKS
    Publication number: 20240022721
    Abstract: A mechanism for processing video data is disclosed. The method includes determining, for a conversion between a visual media data and a bitstream, whether a partitioning scheme is enabled for coding of the video media data according to a rule. The method includes performing the conversion based on determined rule.
    Type: Application
    Filed: September 26, 2023
    Publication date: January 18, 2024
    Inventors: Kai Zhang, Li Zhang, Zhipin Deng, Na Zhang, Yang Wang