Patents by Inventor Xin Zhao

Xin Zhao 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: 20250119583
    Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method of video decoding includes receiving video data including a first block and a syntax element, from a video bitstream, where the syntax element is signaled at a first processing unit level. The method further includes selecting a transform coding mode based on the syntax element and performing a transform process for the first block using the selected transform coding mode, where the transform process is performed on a transform block at a second processing unit level, and where the second processing unit level is not signaled (e.g., is inferred from coded information).
    Type: Application
    Filed: October 4, 2023
    Publication date: April 10, 2025
    Inventors: Tianqi LIU, Liang ZHAO, Xin ZHAO, Jing YE, Han GAO, Shan LIU
  • Patent number: 12273523
    Abstract: The various embodiments described herein include methods and systems for encoding and decoding video. In one aspect, a method includes obtaining video data that includes a first block. The method further includes determining a plurality of transform coefficients associated with the first block. The method also includes predicting respective coefficient signs for the plurality of transform coefficients. The method also includes entropy coding the first block including jointly signaling two or more of the predicted coefficient signs.
    Type: Grant
    Filed: May 4, 2023
    Date of Patent: April 8, 2025
    Assignee: TENCENT AMERICA LLC
    Inventors: Samruddhi Yashwant Kahu, Madhu Peringassery Krishnan, Xin Zhao, Shan Liu
  • Patent number: 12269754
    Abstract: Provided is a desalination device using a solvent extraction method, comprising: a first mixing tank composed of a feed water inlet into which feed water comprising salt ions and water molecules flows, a first solvent inlet into which a first solvent selectively reacting more with the water molecules than with the salt ions flows, a first mixing tank body in which the feed water and the first solvent are mixed so as to form a mixed water, and a mixed water outlet through which the mixed water is discharged; a first separation tank composed of a mixed water inlet which communicates with the mixed water outlet so that the mixed water flows therein, a first separation tank body in which brine containing salt ions of the feed water and first treatment water formed from mixing the water molecules of the feed water and the first solvent of the mixed water are separated by layer, and a first treatment water outlet through which the first treatment water is discharged; a second mixing tank composed of a first treatme
    Type: Grant
    Filed: April 22, 2022
    Date of Patent: April 8, 2025
    Assignee: Korea University Research and Business Foundation
    Inventors: Jae Woo Lee, Ou Kyung Choi, Jun Ho Seo, Gyeong Su Kim, Dan Dan Dong, Xin Zhao
  • Publication number: 20250113036
    Abstract: This disclosure relates generally to sample clipping in video or image and particularly to methods and systems for sample clipping in video or image based on Low Dynamic Range (LDR) coding. For example, an encoder or decoder may determine a sample clipping range for a bock and apply a sample clipping procedure based on the sample clipping range during one of various stages of encoding or decoding process of the block. The sample clipping range may be derived from an LDR selected for encoding the block.
    Type: Application
    Filed: June 27, 2024
    Publication date: April 3, 2025
    Inventors: Xin ZHAO, Ding DING, Shan LIU
  • Publication number: 20250113060
    Abstract: This disclosure relates generally to video coding and particularly to methods and systems for signaling of Low Dynamic Range (LDR) in video or image bitstream. For example, the disclosure describes implementations of manners for signaling whether LDR is applied and which one of LDRs is applied to a block at various singling levels, either explicitly or implicitly.
    Type: Application
    Filed: June 27, 2024
    Publication date: April 3, 2025
    Inventors: Xin ZHAO, Ding DING, Shan LIU
  • Publication number: 20250113035
    Abstract: This disclosure relates generally to video coding and particularly to methods and systems for sample mapping in image and video coding using Low Dynamic Range (LDR) samples. For example, the disclosure describes implementations of mapping functions for conversion of samples from an original bit depth to an LDR bit depth during an encoding and decoding process of videos or images and the signaling of such mapping functions in a bitstream.
    Type: Application
    Filed: June 27, 2024
    Publication date: April 3, 2025
    Inventors: Xin ZHAO, Ding DING, Shan LIU
  • Publication number: 20250113031
    Abstract: A method of video decoding includes receiving a bitstream that comprises coded information of a current block, the coded information of the current block includes coded bits of quantized transform coefficients in a transform domain of the current block, the coded information is also indicative of at least a scaling factor to be used during a dequantization of the quantized transform coefficients. The method also includes determining one or more quantization shifting offsets for a reconstruction of transform coefficients in the transform domain based on at least the scaling factor, reconstructing the transform coefficients from the quantized transform coefficients based on the one or more quantization shifting offsets, calculating residuals in a spatial domain of the current block based on the transform coefficients in the transform domain, and reconstructing the current block according to the residuals in the spatial domain.
    Type: Application
    Filed: September 25, 2024
    Publication date: April 3, 2025
    Applicant: Tencent America LLC
    Inventors: Motong XU, Roman CHERNYAK, Xin ZHAO, Madhu PERINGASSERY KRISHNAN, Biao WANG, Lien-Fei CHEN, Yonguk YOON, Shan LIU
  • Patent number: 12266578
    Abstract: A chips bonding auxiliary structure includes a first chip, an auxiliary pattern and a second chip. The first chip has a first surface. The auxiliary pattern is form on the first surface. The second chip has a second surface bonding to the first surface to form at least one gap space surrounding the auxiliary pattern.
    Type: Grant
    Filed: August 22, 2022
    Date of Patent: April 1, 2025
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Sheng Zhang, Chien-Kee Pang, Xin Zhao
  • Patent number: 12267515
    Abstract: A video decoder is provided for the decoding of a video bitstream encoded in a temporal interpolated prediction (TIP) mode. First and second motion vectors pointing to respective reference frames, or reference pictures within those frames, are generated for a block of a current picture. The motion vectors are then refined by application of a decoder-side motion vector refinement (DMVR) process, based on a bilateral matching process, and the refined motion vectors are used to decode the block. The refinement may more specifically involve consideration of candidates for the refined motion vectors, selected by the bilateral matching. The refinement may be applied at both block and sub-block divisions of the current picture.
    Type: Grant
    Filed: November 7, 2022
    Date of Patent: April 1, 2025
    Assignee: TENCENT AMERICA LLC
    Inventors: Han Gao, Xin Zhao, Liang Zhao, Shan Liu
  • Publication number: 20250106398
    Abstract: In a method for video decoding in a video decoder, a maximum transform size associated with a video sequence is determined. The maximum transform size is indicated by a syntax element associated with the video sequence. Whether a coding unit (CU) size of a CU of the video sequence is larger than the maximum transform size is determined. When the CU size is less than the maximum transform size, a sub-block transform (SBT) mode is enabled. When the CU size is larger than the maximum transform size, the CU is split into a plurality of first transform units (TUs) and when intra sub partition (ISP) mode is enabled, one of the plurality of first TUs is split into a plurality of second TUs. The CU is reconstructed based on whether the CU size is larger than the maximum transform size.
    Type: Application
    Filed: December 9, 2024
    Publication date: March 27, 2025
    Applicant: Tencent America LLC
    Inventors: Xin ZHAO, Xiang LI, Shan LIU
  • Publication number: 20250098568
    Abstract: Provided is a controller area network (CAN)-bus-based electrical control system for an electric mower. Based on CAN bus technology design, an energy source control module, an instrument display module, a traveling control module, a mowing control module and a sensor module in the electrical control system implement signal collection, reception, analysis, processing and transmission by a CAN module and an interface of the CAN module the integration level and information processing efficiency of the electric mower. An intelligent boundary of the electric mower is expanded by a topological structure of a CAN bus, and a development platform is provided for information-based precise control of the mower.
    Type: Application
    Filed: December 11, 2024
    Publication date: March 27, 2025
    Inventors: Mengnan LIU, Zhanpo XUE, Jianhua WANG, Xin ZHAO, Fuqiang GUO, Liyou XU, Meng WU, Zhigang YANG, Chunping LI
  • Publication number: 20250106407
    Abstract: This disclosure relates generally to video coding/decoding and particularly prediction using multiple scaling factors and multiple samples. One method includes receiving a video bitstream comprising a current block and a reference block, the reference block being used for predicting the current block by using a prediction function; receiving, from the video bitstream, a first syntax element indicating a manner for determining parameters of the prediction function; determining the parameters of the prediction function based on the manner; predicting a current sample in the current block based on the reference block using the prediction function; and reconstructing the current block based on the predicted current sample.
    Type: Application
    Filed: December 29, 2023
    Publication date: March 27, 2025
    Applicant: Tencent America LLC
    Inventors: Jing YE, Xin ZHAO, Liang ZHAO, Han GAO, Shan LIU
  • Publication number: 20250106392
    Abstract: Some aspects of the disclosure provide a method of video decoding. The method includes: receiving a bitstream that comprises coded information of one or more pictures; generating, according to the bitstream, at least a to-be-filtered sample, and input samples for filtering the to-be-filtered sample in an in-loop filter, the in-loop filter using a Wiener-based filter with an adaptive filter shape; determining a modified filter shape for the Wiener-based filter, the modified filter shape being adapted according to a relationship between the to-be-filtered sample and the input samples; and applying the Wiener-based filter with the modified filter shape on the input samples to generate a filtered output of the to-be-filtered sample.
    Type: Application
    Filed: September 23, 2024
    Publication date: March 27, 2025
    Applicant: Tencent America LLC
    Inventors: Han ZHANG, Roman CHERNYAK, Lien-Fei CHEN, Madhu PERINGASSERY KRISHNAN, Biao WANG, Xin ZHAO, Motong XU, Yonguk YOON, Shan LIU
  • Publication number: 20250106404
    Abstract: This disclosure relates generally to video coding and particularly to methods, devices, and systems for signaling prediction modes in recursively partitioned video frames. For example, a regional prediction mode flag syntax element may be introduced for indicating whether an entire coding region of a video frame signaled as being of a first predefined prediction mode is entirely coded in a second predefined prediction mode or not. The signaling schemes described in this disclosure facilitate reducing signaling overhead in video frames that employ a mix of different prediction modes.
    Type: Application
    Filed: April 11, 2024
    Publication date: March 27, 2025
    Applicant: TENCENT AMERICA LLC
    Inventors: Liang ZHAO, Xin ZHAO, Han GAO, Jing YE, Madhu PERINGASSERY KRISHNAN, Yushin CHO, Shan LIU
  • Patent number: 12262019
    Abstract: Processing circuitry receives coded information indicative of applying cross-component sample offset (CCSO) with adaptive bands. The processing circuitry determines at least a first band width for a first band and a second band width for a second band. The processing circuitry determines at least a first offset associated with the first band and a second offset associated with the second band, and categorizes reconstructed samples of a first color component into at least the first band and the second band. The first band includes first reconstructed samples and the second band includes second reconstructed samples. The processing circuitry applies the first offset to first reconstructed samples of a second color component that are collocated with the first reconstructed samples of the first color component, and the second offset to second reconstructed samples of the second color component that are collocated with the second reconstructed samples of the first color component.
    Type: Grant
    Filed: September 13, 2023
    Date of Patent: March 25, 2025
    Assignee: Tencent America LLC
    Inventors: Samruddhi Yashwant Kahu, Xin Zhao, Shan Liu
  • Patent number: 12262030
    Abstract: This disclosure relates to video processing that includes a video processing device that: determines that a Chroma from Luma (CfL) prediction mode is to be applied to a luma block in a received coded bitstream; generates a neighbor luma average for the luma block by averaging a set of reconstructed luma samples, wherein the set of reconstructed luma samples comprises a plurality of reconstructed neighbor luma samples in at least one neighbor luma block that neighbors the luma block; generates an alternating current (AC) contribution of a plurality of prediction samples of a chroma block co-located with the luma block based on a plurality of luma samples in the luma block and the neighbor luma average; and reconstructs the chroma block at least by applying the CfL prediction mode based on the AC contribution.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: March 25, 2025
    Assignee: Tencent America LLC
    Inventors: Jing Ye, Xin Zhao, Liang Zhao, Shan Liu
  • Patent number: 12256665
    Abstract: Provided is a controller area network (CAN)-bus-based electrical control system for an electric mower. Based on CAN bus technology design, an energy source control module, an instrument display module, a traveling control module, a mowing control module and a sensor module in the electrical control system implement signal collection, reception, analysis, processing and transmission by a CAN module and an interface of the CAN module the integration level and information processing efficiency of the electric mower. An intelligent boundary of the electric mower is expanded by a topological structure of a CAN bus, and a development platform is provided for information-based precise control of the mower.
    Type: Grant
    Filed: December 11, 2024
    Date of Patent: March 25, 2025
    Assignee: LUOYANG TRACTOR RESEARCH INSTITUTE CO., LTD
    Inventors: Mengnan Liu, Zhanpo Xue, Jianhua Wang, Xin Zhao, Fuqiang Guo, Liyou Xu, Meng Wu, Zhigang Yang, Chunping Li
  • Publication number: 20250097454
    Abstract: Aspects of the disclosure provide a method and an apparatus including processing circuitry that decodes a current block in a current picture with a subblock-based temporal motion vector prediction (SbTMVP) mode. A first collocated block in a first collocated picture is determined based on a first displacement vector candidate of the current block corresponding to a first SbTMVP candidate. The processing circuitry determines first motion information of a current template of the current block based on one or more pieces of motion information of the first collocated block or a neighboring block of the first collocated block. The processing circuitry determines one of a first reference template and a first subblock reference template in a first reference picture based on the first motion information and determines a first template matching cost based on the current template and the one of the first reference template and the first subblock reference template.
    Type: Application
    Filed: November 27, 2024
    Publication date: March 20, 2025
    Applicant: Tencent America LLC
    Inventors: Lien-Fei CHEN, Guichun LI, Xin ZHAO, Shan LIU
  • Publication number: 20250097427
    Abstract: A method and apparatus for encoding or decoding a video sequence includes encoding or decoding the video sequence using a 4:4:4 chroma format, or encoding or decoding the video sequence using a 4:2:2 chroma format, wherein when encoding or decoding the video sequence using the 4:4:4 chroma format, copying an affine motion vector of one 4×4 luma block using an operation other than an averaging operation and associating the affine motion vector to a co-located 4×4 chroma block, and when encoding or decoding the video sequence using the 4:2:2 chroma format, associating each 4×4 chroma block with two 4×4 co-located luma blocks such that an affine motion vector of one 4×4 chroma block is an average of the motion vectors of the two co-located luma blocks.
    Type: Application
    Filed: November 25, 2024
    Publication date: March 20, 2025
    Applicant: TENCENT AMERICA LLC
    Inventors: Xin ZHAO, Xiaozhong XU, Xiang LI, Shan LIU
  • Publication number: 20250097408
    Abstract: The various implementations described herein include methods and systems for coding video. In one aspect, a method includes receiving a video bitstream including a current coding block of a current image frame and determining that the current coding block is to be predicted in a weighted bi-prediction (WBP) mode. The method further includes in response to the current coding block being predicted in the WBP mode, determining that the current coding block is associated with two bi-prediction blocks and identifying a plurality of distinct weighting factor lists including at least a first list of positive weighting factors and a second list of mixed weighting factors. The method further includes selecting one of the weighing factor lists, identifying a first weighting factor from the weighing factor lists, and reconstructing the current image frame, including determining the current coding block by combining the two bi-prediction blocks based on the first weighting factor.
    Type: Application
    Filed: December 5, 2024
    Publication date: March 20, 2025
    Inventors: Liang ZHAO, Xin ZHAO, Han GAO, Biao WANG, Xiaozhong XU, Shan LIU