Patents by Inventor XIANG-AN LIU

XIANG-AN LIU 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: 20240110729
    Abstract: Disclosed in the present invention are a novel flat heat absorber for solar tower power generation and a system using same. The system comprises a windshield, a flat heat absorber, and a circulation pipeline, wherein the flat heat absorber is a main element for photothermal conversion and heat energy transfer, the windshield prevents heat loss of the heat absorber, and the circulation pipeline ensures the circulation of a working fluid. In a working process, a heat transfer fluid in the flat heat absorber absorbs heat and evaporates from an evaporation surface, releases heat and condenses on a condensation surface, the condensed heat transfer fluid flows back to the evaporation surface to enter circulation work of a next round, and heat is transferred to the working fluid by means of a gas-liquid phase change process.
    Type: Application
    Filed: May 8, 2021
    Publication date: April 4, 2024
    Inventors: Xiang LING, Mingsheng DU, Changtian LIU, Juan ZHAO
  • Patent number: 11949866
    Abstract: In a method of video decoding at a video decoder, a coded video bitstream is received. The coded video bitstream includes a first high level syntax (HLS) element indicating whether a second HLS element is included in the coded video bitstream. The second HLS element indicates whether explicit multiple transform selection (MTS) for intra coding is enabled. Whether an implicit MTS is enabled for a current block is determined responsive to (i) the first HLS element indicating that the second HLS element is included in the coded video bitstream, (ii) the second HLS element indicating that the explicit MTS for intra coding is disabled, and (iii) a prediction mode of the current block is an intra prediction mode. Further, the current block is reconstructed based on whether the implicit MTS is enabled.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Shan Liu, Xin Zhao, Xiang Li
  • Patent number: 11946374
    Abstract: The disclosure relates to an omni-directional horizontally oriented deflecting tool for a coiled tubing, which includes an inner central pipe, an outer central pipe, a conical outer cylinder, a piston outer cylinder, an anchoring mechanism, a sealing mechanism, a reversing mechanism and a steering mechanism. The anchoring mechanism includes a cone, an O-shaped sealing ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, and the sealing mechanism includes a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket.
    Type: Grant
    Filed: July 5, 2023
    Date of Patent: April 2, 2024
    Assignee: Southwest Petroleum University
    Inventors: Yang Tang, Miantao Guan, Yulin Zhang, Peng Zhao, Guorong Wang, Jinhai Zhao, Qingyou Liu, Jinzhong Wang, Xiang Gao, Yufa He, Hu Deng, Liming Fan, Rutao Ma
  • Patent number: 11949854
    Abstract: Aspects of the disclosure provide methods and apparatuses for video encoding/decoding. In some examples, an apparatus for video decoding includes processing circuitry. The processing circuitry decodes prediction information of a current block in a current picture from a coded video bitstream. The prediction information is indicative of a prediction mode that combines an intra prediction and an inter prediction. The intra prediction is based on at least a first reference sample in the current picture, and the inter prediction is based on at least a second reference sample in a reference picture of the current picture. Further, the processing circuitry determines coding tools associated with the prediction mode that combines the intra prediction and the inter prediction and reconstruct at least a sample of the current block according to the determined coding tools associated with the prediction mode.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Guichun Li, Liang Zhao, Xin Zhao, Xiang Li, Shan Liu
  • Patent number: 11949895
    Abstract: An apparatus for video decoding includes processing circuitry. The circuitry can be configured to receive a current block that is affine coded and included in a current coding tree unit (CTU), and determine an inherited affine candidate based on regular motion information of two minimum blocks in a rightmost column of minimum blocks of a left neighboring CTU of the current CTU when the current block is adjacent to a left boundary of the current CTU.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Guichun Li, Xiaozhong Xu, Xiang Li, Shan Liu
  • Patent number: 11949726
    Abstract: According to an embodiment, a method of selecting a Rice parameter for encoding a video bitstream using at least one processor includes obtaining an absolute level corresponding to a current transform block; determining whether transform skip is enabled; generating a lookup variable based on the absolute level and the determination of whether the transform skip is enabled; obtaining the Rice parameter from a lookup table based on the lookup variable; and encoding a residual subblock based on the Rice parameter.
    Type: Grant
    Filed: May 31, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Cheung Auyeung, Xiang Li, Shan Liu
  • Patent number: 11949863
    Abstract: In response to a current block being partitioned into a first partition and a second partition based on a geometric partition mode, a first prediction type for the first partition and a second prediction type for the second partition are determined based on a flag associated with one of intra prediction, inter prediction, and intra block copy (IBC). Each of the first and second prediction types is one of the intra prediction, the inter prediction, and the IBC. Based on the first prediction type, a first prediction mode for the first partition of the current block is determined. Based on the second prediction type, a second prediction mode for the second partition of the current block is determined. The first partition of the current block is reconstructed based on the first prediction mode and the second partition of the current block is reconstructed based on the second prediction mode.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Lien-Fei Chen, Xiang Li, Ling Li, Shan Liu
  • Patent number: 11945807
    Abstract: Linker-drug compounds and antibody-drug conjugates that bind to human oncology targets are disclosed. The linker-drug compounds and antibody-drug conjugates comprise a splicing modulator drug moiety. The disclosure further relates to methods and compositions for use in the treatment of neoplastic disorders by administering the antibody-drug conjugates provided herein. In an embodiment, the splicing modulator comprises a pladienolide or a pladienolide derivative.
    Type: Grant
    Filed: May 3, 2022
    Date of Patent: April 2, 2024
    Assignee: EISAI R&D MANAGEMENT CO., LTD.
    Inventors: Ermira Pazolli, Silvia Buonamici, Thiwanka Samarakoon, Sudeep Prajapati, Nathan Fishkin, James Palacino, Michael Seiler, Ping Zhu, Andrew Cook, Peter Smith, Xiang Liu, Shelby Ellery, Dominic Reynolds, Lihua Yu, Zhenhua Wu, Shouyong Peng, Nicholas Calandra, Megan Sheehan, Yonghong Xiao
  • Patent number: 11948284
    Abstract: The present invention belongs to the technical field of petroleum exploitation engineering, and discloses a 3D modeling method for pore-filling hydrate sediment based on a CT image. Indoor remolding rock cores or in situ site rock cores without hydrate can be scanned by CT; a sediment matrix image stack and a pore image stack are obtained by gray threshold segmentation; then, a series of pore-filling hydrate image stacks with different saturations are constructed through image morphological processing of the pore image stack such as erosion, dilation and image subtraction operation; and a series of digital rock core image stacks of the pore-filling hydrate sediment with different saturations are formed through image subtraction operation and splicing operation to provide a relatively real 3D model for the numerical simulation work of the basic physical properties of a reservoir of natural gas hydrate.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: April 2, 2024
    Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Yongchen Song, Yanghui Li, Peng Wu, Xiang Sun, Weiguo Liu, Jiafei Zhao, Mingjun Yang, Lei Yang, Zheng Ling
  • Patent number: 11949849
    Abstract: A method for video decoding is provided. For a current block, whether an angular intra prediction mode for the current block is a wide angle mode that is in a direction outside of a range of directions that spans a bottom left diagonal direction and a top right diagonal direction of the current block is determined. Based on the angular intra prediction mode being determined as the wide angle mode, an intra smooth filter is enabled, the enabled intra smooth filter is applied to blocks neighboring the current block to generate filtered blocks, and intra prediction is performed based on the filtered blocks to decode the current block.
    Type: Grant
    Filed: November 28, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Liang Zhao, Xin Zhao, Xiang Li, Shan Liu
  • Patent number: 11949850
    Abstract: A method of selecting a reference sample used to encode a current block in an encoded video bitstream using at least one processor includes determining that a constrained intra prediction (CIP) mode is enabled; determining that a neighboring sample of the current block belongs to a coding block that is coded using intra block copy (IBC) coding; based on the determining that the neighboring sample belongs to the coding block that is coded using the IBC coding, selecting the neighboring sample as the reference sample; and encoding the current block using intra prediction coding based on the reference sample.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Xin Zhao, Xiang Li, Liang Zhao, Shan Liu
  • Patent number: 11948336
    Abstract: Aspects of the disclosure provide methods and apparatuses for point cloud compression and decompression. In some examples, an apparatus for point cloud compression/decompression includes processing circuitry. In some examples, the processing circuitry receives a bitstream carrying compressed data for a point cloud. The processing circuitry determines that a current node in an octree structure is eligible for an isolated mode. The octree structure corresponds to three dimensional (3D) partitions of a space of the point cloud. Then the processing circuitry determines, based on information of one or more other nodes, a single isolated point flag for the current node that indicates whether the current node is coded with a single isolated point.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Xiang Zhang, Wen Gao, Shan Liu
  • Patent number: 11949896
    Abstract: Aspects of the disclosure provide a method and an apparatus for video encoding. Whether a block size cbSize of a chroma block in luma samples is less than or equal to a minimum allowed chroma quaternary tree (QT) leaf node size MinQtSizeC in luma samples such that cbSize <=MinQtSizeC is determined. In response to the block size cbSize of the chroma block in luma samples being less than or equal to the minimum allowed chroma QT leaf node size MinQtSizeC in luma samples, a QT split is determined as disallowed for the chroma block. Partition information indicating that a chroma coding tree structure in a dual tree is applied to the chroma block is generated, the partition information further indicating the block size cbSize of the chroma block in luma samples and the minimum allowed chroma QT leaf node size MinQtSizeC in luma samples.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Guichun Li, Xiang Li, Shan Liu, Xiaozhong Xu
  • Patent number: 11949855
    Abstract: Aspects of the disclosure provide a method and an apparatus for video coding. In some examples, an apparatus includes processing circuitry that divides a current block into a plurality of sub-blocks, derives a plurality of pieces of sub-block motion information for the plurality of sub-blocks, generates predicted sub-block samples for the sub-blocks according to the pieces of sub-block motion information, and generates a predicted block for the current block according to a combination of the predicted sub-block samples. The processing circuitry also selects a piece of the sub-block motion information from the pieces of sub-block motion information as representative motion information for the current block, and stores the representative motion information in a history-based motion vector prediction (HMVP) buffer.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Guichun Li, Xiang Li, Shan Liu
  • Patent number: 11949902
    Abstract: A method for video decoding in a decoder is provided. Coding information of a current block (CB) from a coded video bitstream is decoded. The coding information includes weighted prediction information that indicates a weighted prediction for the CB. A determination is made as to whether to apply a prediction refinement with optical flow (PROF) on the CB based on the weighted prediction information. The CB is reconstructed based on the weighted prediction and whether the PROF is determined to be applied on the CB.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: April 2, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Guichun Li, Xiang Li, Xiaozhong Xu, Shan Liu
  • Publication number: 20240102782
    Abstract: The invention provides a method for evaluating deep-buried tunnel blasting parameters, and belongs to the technical field of mine engineering. The method comprises: setting multiple diverse blasting schemes; selecting a plurality of test sections with the same geological characteristics, the number of the test sections corresponding to the number of the blasting schemes; blasting the test sections using the blasting schemes, and obtaining diversified monitoring data of each test section; and comparing the diversified monitoring data to select the optimal blasting schemes for the test sections. According to the method for evaluating the deep-buried tunnel blasting parameters, by implementing different blasting schemes in test sections with the same geological characteristics, diversified monitoring data of the test sections are obtained and compared to select the optimal blasting schemes for the test sections, so as to ensure the safety and quality of blasting excavation of deep-buried tunnels.
    Type: Application
    Filed: September 5, 2023
    Publication date: March 28, 2024
    Inventors: Nuwen Xu, Biao Li, Quanfu Ding, Haoyu Mao, Peiwei Xiao, Xiang Zhou, Xinchao Ding, Yuepeng Sun, Yong Xia, Jun Liu, Zhiqiang Sun
  • Publication number: 20240104783
    Abstract: Method, apparatus, and system for merging multiple attribute maps for mesh compression may be provided. The process may include obtaining multiple attribute maps associated with a mesh including one or more texture maps. The multiple attribute maps may be concatenated into a single concatenated map and concatenated UV coordinates for each of the multiple attribute maps may be generated based on re-computing original UV coordinates of each of the multiple attribute maps within the single concatenated map.
    Type: Application
    Filed: May 9, 2023
    Publication date: March 28, 2024
    Applicant: TENCENT AMERICA LLC
    Inventors: Fang-yi CHAO, Thuong Nguyen Canh, Xiang Zhang, Xiaozhong Xu, Shan Liu
  • Publication number: 20240105525
    Abstract: Test structures and methods of testing pixel driver chip donor wafers are described. In an embodiment, a redistribution layer is formed over a pixel driver chip donor wafer and probed to determine known good dies, followed by removal of the RDL. In other embodiments, test routing is formed in the pixel driver chip using a polycide material or doped region in the semiconductor wafer.
    Type: Application
    Filed: July 25, 2023
    Publication date: March 28, 2024
    Inventors: Imran Hashim, Xiang Lu, Stanley B. Wang, Xuchun Liu, Mahdi Farrokh Baroughi, Yongjie Jiang, Hopil Bae, Hasan Akyol, Baris Posat, John T. Wetherell, Lei Wu
  • Publication number: 20240104121
    Abstract: A method is provided automatically creating map objects from data from various sources gathered within a geographical area using data aggregation and conflation. Methods may include: receiving observation data associated with a geographic area; identifying at least one observed object within the observation data, the at least one observed object including an observed location and an observed object type; determining at least one confidence score for the at least one observed object; estimating similarity between the at least one observed object and at least one other observed object; merging the at least one observed object and the at least one other observed object; conflating the at least one observed object and the at least one other observed object to obtain a conflated object; providing for storage of the conflated object; and providing for at least one of navigational guidance or at least semi-autonomous vehicle control using the stored, conflated object.
    Type: Application
    Filed: September 23, 2022
    Publication date: March 28, 2024
    Inventors: Nileshkumar KADAM, Xiang LIU, Ricky SINGH, Jivitesh SHARMA, Ganesh SINGADKAR
  • Patent number: 11943432
    Abstract: In a method of video decoding, coded information of a current block is received. First information associated with the current block in the coded information is obtained. The first information indicates whether the current block is intra predicted based on decoder side intra mode derivation (DIMD). Second information associated with the current block in the coded information is obtained. The second information indicates whether the current block is partitioned based on an intra sub-partition (ISP) mode. A context model index is determined in response to one of (i) the first information indicating that the current block is intra predicted based on the DIMD, and (ii) the second information indicating that an above adjacent block or a left adjacent block of the current block is partitioned based on the ISP mode. The current block is decoded from the coded video stream based at least on the context model index.
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: March 26, 2024
    Assignee: TENCENT AMERICA LLC
    Inventors: Ling Li, Xiang Li, Shan Liu