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).

  • Patent number: 12132889
    Abstract: A video coding or decoding method includes using history-based motion vector prediction (HMVP) for conversion between multiple video blocks including a current block of video and a bitstream representation of the multiple video blocks such that for a uni-predicted block that for which a single reference picture is used for motion compensation, refraining from updating a look-up table for HMVP candidates for the uni-predicted block. The video coding or decoding method further includes performing the conversion using look-up tables for the multiple video blocks.
    Type: Grant
    Filed: March 27, 2023
    Date of Patent: October 29, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Patent number: 12132884
    Abstract: Devices, systems and methods for video processing are described. An example method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, a number of intra-coded neighboring blocks of the current block for a combined inter and intra prediction mode according to a rule that specifies a manner of treating a block coded using a palette coding mode in counting the number of intra-coded neighboring blocks for the combined inter and intra prediction mode. The method also includes performing the conversion based on the determining.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: October 29, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD, BYTEDANCE INC.
    Inventors: Weijia Zhu, Li Zhang, Jizheng Xu, Kai Zhang, Hongbin Liu, Yue Wang
  • Patent number: 12132888
    Abstract: A method of visual media processing method includes performing a conversion between a current video block of a current picture of a visual media data and a bitstream representation of the visual media data. The conversion is based on a reference region from the current picture comprising reference samples used for deriving a prediction block of the current video block. A virtual buffer of a defined size is used for tracking availability of the reference samples for deriving the prediction block.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: October 29, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Jizheng Xu, Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Publication number: 20240357172
    Abstract: Embodiments of the present disclosure provide a solution for point cloud coding.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Inventors: Yingzhan XU, Wenyi Wang, Kai Zhang, Li Zhang
  • Publication number: 20240357102
    Abstract: An example device for filtering a decoded block of video data includes one or more processing units configured to construct a plurality of filters for classes of blocks of a current picture of video data. To construct the plurality of filters for each of the classes, the processing units are configured to determine a value of a flag that indicates whether a fixed filter is used to predict a set of filter coefficients of the class, and in response to the fixed filter being used to predict the set of filter coefficients, determine an index value into a set of fixed filters and predict the set of filter coefficients of the class using a fixed filter of the set of fixed filters identified by the index value.
    Type: Application
    Filed: June 28, 2024
    Publication date: October 24, 2024
    Inventors: Marta Karczewicz, Wei-Jung Chien, Li Zhang
  • Publication number: 20240357157
    Abstract: One example method of video processing includes implementing, by a processor, a decoder-side motion vector derivation (DMVD) scheme for motion vector refinement during a conversion between a current video block and a bitstream representation of the current video block by deriving parameters based on a deriving rule. The conversion may include compressing the current video block into the bitstream representation or uncompressing the bitstream representation into pixel values of the current video block.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Jizheng Xu, Yue Wang
  • Publication number: 20240352190
    Abstract: A hydrocarbyl tetralin polyethersulfonate, preparation method therefor and use thereof are provided. The hydrocarbyl tetralin polyethersulfonate is of formula (I-0), The hydrocarbyl tetralin polyethersulfonate has a high surface and interface activity, can be used in an oil reservoir exploitation, especially in a high-temperature and high-salt oil reservoir exploitation, to improve crude oil recovery.
    Type: Application
    Filed: August 19, 2022
    Publication date: October 24, 2024
    Inventors: Xinning BAO, Yingcheng LI, Weidong ZHANG, Jun JIN, Yong MENG, Li ZHANG
  • Publication number: 20240357440
    Abstract: Embodiments of this application provide a communication method and a communication apparatus. In this application, a terminal device receives a preconfigured measurement gap MG indicated by a network device and MG status information corresponding to each CC in at least one CC after the CC is deactivated. The MG status information is activated or deactivated. In a case that M CCs in the at least one CC are deactivated, the terminal device activates or deactivates the MG based on M pieces of MG status information corresponding to the M deactivated CCs, so that the terminal device can accurately determine, based on the MG status information of the deactivated CC, whether to activate or deactivate a preconfigured MG.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Inventors: Haisen Zhang, Bingzhao Li, Li Zhang
  • Publication number: 20240357513
    Abstract: This application discloses a pathloss reference signal determining method and a related apparatus, and relates to the field of communication technologies. The method includes: A terminal device receives activation information sent by a network device, where the activation information indicates that a first cell is activated, and the first cell is a cell having a data receiving capability of an uplink channel; and the terminal device determines a target reference signal as a pathloss reference signal, where the target reference signal includes a reference signal used to reflect a downlink pathloss status corresponding to the terminal device, and the pathloss reference signal is used to determine an uplink transmit power of the uplink channel. In this method, a downlink pathloss can be accurately calculated, to improve accuracy and efficiency of determining an uplink transmit power of an uplink channel, and eliminate an additional activation delay.
    Type: Application
    Filed: July 1, 2024
    Publication date: October 24, 2024
    Inventors: Zhongyi SHEN, Jing HAN, Li ZHANG, Hong LI
  • Publication number: 20240352417
    Abstract: Disclosed are a device and method for fully enclosed and fully automatic dispensing of cells. The device includes a sample feeding module, a liquid replenishment module, and a liquid distribution module. By means of the device, cell dispensing can be performed under enclosed conditions, such that the risk of infection due to contact with an external environment is reduced. In addition, the survival rate of dispensed cells is ensured, and the degree of precision of cells obtained after dispensing is high, thereby improving the quality of the dispensed cells.
    Type: Application
    Filed: August 24, 2022
    Publication date: October 24, 2024
    Applicant: AbelZeta Inc.
    Inventors: Fei WANG, Li XIE, Li ZHANG, Jiaqiang REN, Dijun ZHAO, Luyi ZHANG, Yiwen ZHOU
  • Publication number: 20240357131
    Abstract: Techniques are described for using an inter-intra-prediction block. A video coder may generate a first prediction block according to an intra-prediction mode and generate a second prediction block according to an inter-prediction mode. The video coder may weighted combine, such as based on the intra-prediction mode, the two prediction blocks to generate an inter-intra-prediction block (e.g., final prediction block). In some examples, an inter-intra candidate is identified in a list of candidate motion vector predictors, and an inter-intra-prediction block is used based on identification of the inter-intra candidate in the list of candidate motion vector predictors.
    Type: Application
    Filed: June 27, 2024
    Publication date: October 24, 2024
    Inventors: Kai Zhang, Jianle Chen, Li Zhang, Xiang Li, Marta Karczewicz
  • Publication number: 20240357173
    Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: determining, during a conversion between a current point cloud (PC) sample of a point cloud sequence and a bitstream of the point cloud sequence, a target PC sample for the current PC sample based on at least one reconstructed PC sample of at least one reference PC sample of the current PC sample; and performing the conversion based on the target PC sample.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Inventors: Yingzhan XU, Kai ZHANG, Li ZHANG
  • Publication number: 20240357174
    Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: determining, based on a target motion information between a current frame of a point cloud sequence and a reference frame of the current frame during a conversion between the current frame and a bitstream of the point cloud sequence, whether an attribute inter prediction is performed on the current frame based on the reference frame, the target motion information being used for performing a motion compensation on the reference frame; and performing the conversion based on the determination.
    Type: Application
    Filed: July 3, 2024
    Publication date: October 24, 2024
    Inventors: Yingzhan Xu, Wenyi Wang, Kai Zhang, Li Zhang
  • Patent number: 12126805
    Abstract: Techniques for video processing, including video coding, video decoding and video transcoding are described. One example method includes performing a conversion between a video picture that includes one or more tiles and one or more rectangular slices and a bitstream of the video according to a rule. The rule specifies that, for iteratively determining information about the one or more rectangular slices, a variable indicating a tile index is updated only for slices having indices that are smaller than a value equal to a number of slices in the video picture minus 1.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: October 22, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Ye-kui Wang, Zhipin Deng, Kui Fan, Jizheng Xu, Hongbin Liu
  • Patent number: 12126825
    Abstract: Methods of enabling and disabling a decoder-side motion vector refinement (DMVR) video decoder and/or encoder are described. One example method includes determining a width (W) and a height (H) of a video block, making a determination, based on a condition of the video block, between enabling and disabling a decoder side motion vector refinement step for a conversion between the video block and a coded representation of the video block, in a case that the determination is enabling, performing the conversion by enabling the decoder side motion vector refinement step; and in a case that the determination is disabling, performing the conversion by disabling the decoder side motion vector refinement step, wherein the decoder side motion vector refinement step includes refining value of a motion vector signaled in the coded representation and using the refined value during the conversion.
    Type: Grant
    Filed: June 27, 2023
    Date of Patent: October 22, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • Patent number: 12126808
    Abstract: Restrictions on motion vector difference (MVD) are disclosed. In one example method of video processing, performing a conversion between a first block of video and a bitstream representation of the first block based on a constrained MVD component associated with the first block, wherein a value of the MVD component is constrained in a predetermined range of [?2M, 2M?1], where M=17.
    Type: Grant
    Filed: October 31, 2022
    Date of Patent: October 22, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Li Zhang, Hongbin Liu
  • Patent number: 12126802
    Abstract: A method for video processing includes applying a sub-block residual coding scheme to a current video block, wherein the residual of the current video block is split into a plurality of sub-blocks each having a size of M*N, determining at least one sub-block with non-zero coefficients based on characteristic associated with each of the plurality of sub-blocks; coding the residue of the current video block based on the derived at least one sub-block with non-zero coefficients.
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: October 22, 2024
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Jizheng Xu, Weijia Zhu, Yue Wang
  • Publication number: 20240346699
    Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: performing a conversion between a current point cloud frame of a point cloud sequence and a bitstream of the point cloud sequence, a first slice in the current point cloud frame being directly depended upon by no more than a single dependent slice.
    Type: Application
    Filed: June 21, 2024
    Publication date: October 17, 2024
    Inventors: Ye-Kui WANG, Yingzhan Xu, Kai Zhang, Wenyi Wang, Li Zhang
  • Publication number: 20240346706
    Abstract: Embodiments of the present disclosure provide a solution for point cloud coding. A method for point cloud coding is proposed. The method comprises: determining, during a conversion between a current frame of a point cloud sequence and a bitstream of the point cloud sequence, a capturing laser which captures a node of the current frame, the node representing a spatial partition of the current frame; and performing the conversion based on the capturing laser.
    Type: Application
    Filed: June 24, 2024
    Publication date: October 17, 2024
    Inventors: Wenyi WANG, Yingzhan Xu, Kai Zhang, Li Zhang
  • Publication number: 20240345005
    Abstract: An inspection system and method, the inspection system includes: a carrying device, at least one ray source, where each ray source includes a separate housing to define a vacuum space and a plurality of target spots enclosed within the housing; and a detector assembly. The at least one ray source and the detector assembly are lifted or lowered along a central axis of the carrying device relative to the carrying device. When viewed along the central axis, the ray source is translatable between scanning positions relative to the carrying device. When the ray source is at one of the scanning positions, the ray source and the detector assembly are lifted or lowered along the central axis, and the ray source emits X-rays; and when the ray source and the detector assembly are lifted or lowered a predetermined distance, the ray source translates to another one of the scanning positions.
    Type: Application
    Filed: July 6, 2022
    Publication date: October 17, 2024
    Inventors: Li ZHANG, Zhiqiang CHEN, Qingping HUANG, Hui DING, Yong ZHOU, Xin JIN, Liming YAO