Patents by Inventor Kai Liu

Kai 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: 20220174298
    Abstract: A video processing method includes determining, fora conversion between a video block of a video and a coded representation of the video, factors of a scaling tool based on a coding mode of the video block; and performing the conversion using the scaling tool, wherein the use of the scaling tool comprises: scaling at least some coefficients representing the video block during encoding or descaling at least some coefficients from the coded representation during decoding.
    Type: Application
    Filed: February 18, 2022
    Publication date: June 2, 2022
    Inventors: Li ZHANG, Kai ZHANG, Hongbin LIU, Jizheng XU, Yue WANG
  • Publication number: 20220174309
    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: Application
    Filed: February 17, 2022
    Publication date: June 2, 2022
    Inventors: Hongbin LIU, Li ZHANG, Kai ZHANG, Yue WANG
  • Patent number: 11350116
    Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream representation of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: May 31, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Jizheng Xu, Li Zhang, Kai Zhang, Hongbin Liu, Yue Wang
  • Patent number: 11345047
    Abstract: An automated grasping apparatus for precise and clean assembly of a large-aperture optical element includes a reconfigurable end effector, a manipulating robot arm, a computer control unit, a task management software and process database system, a code scanning recognizer, and an electrical auxiliary support system. During an assembling operation, a code of the optical element is scanned by the code scanning recognizer, wherein a suitable process for the optical element is retrieved automatically. The configuration of the end effector is adjusted according to an instruction flow that precision grasping and stable suction of the optical element are achieved by manipulating the end effector. The robot arm is moved to place the optical element at a designated station, and the robot arm carries the end effector to return to an original position after the assembly operation is completed.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: May 31, 2022
    Inventors: Hui Wang, Kai Long, Zheng Zhang, Bing Zhao, Tianye Liu, Mengjiya Tian
  • Patent number: 11350098
    Abstract: Devices, systems, and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes generating, for a conversion between a current video block of a video and a coded representation of the current video block, a most probable mode (MPM) list based on a rule, where the rule is based on whether a neighboring video block of the current video block is coded with a matrix based intra prediction (MIP) mode, and performing the conversion between the current video block and the coded representation of the current video block using the MPM list, where the conversion applies a non-MIP mode to the current video block, and where the non-MIP mode is different from the MIP mode.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: May 31, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 11350100
    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block according to a rule, where the rule specifies a relationship between applicability of a matrix based intra prediction (MIP) mode or a transform mode during the conversion, where the MIP mode includes determining a prediction block of the current video block by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, and where the transform mode specifies use of a transform operation for the determining the prediction block for the current video block.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: May 31, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 11350099
    Abstract: Devices, systems and methods for digital video coding, which includes matrix-based intra prediction methods for video coding, are described. In a representative aspect, a method for video processing includes performing a conversion between a current video block of a video and a bitstream representation of the current video block using a matrix based intra prediction (MIP) mode in which a prediction block of the current video block is determined by performing, on previously coded samples of the video, a boundary downsampling operation, followed by a matrix vector multiplication operation, and selectively followed by an upsampling operation, where the performing the conversion includes deriving, according to a rule, boundary samples by applying a left bit shift operation or a right bit shift operation on a sum of at least one reference boundary sample, and where the rule determines whether to apply the left bit shift or the right bit shift operation.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: May 31, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Zhipin Deng, Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu
  • Patent number: 11349188
    Abstract: An electronic device includes a casing, a fan base, a fan side wall and an impeller. The casing has a fan top wall. The fan top wall has an airflow inlet. The fan base is provided in the casing. The fan side wall extends from the casing or the fan base. The fan top wall, the fan base and the fan side wall define a fan space communicated with the airflow inlet and a first airflow outlet communicated with the fan space. The impeller is mounted at the fan base and is located in the fan space.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: May 31, 2022
    Inventors: Chih-Yao Kuo, Chin-Kai Sun, Chung-Chiao Tan, Wei-Cheng Liu
  • Patent number: 11347063
    Abstract: An eyepiece waveguide for an augmented reality display system may include an optically transmissive substrate, an input coupling grating (ICG) region, a multi-directional pupil expander (MPE) region, and an exit pupil expander (EPE) region. The ICG region may receive an input beam of light and couple the input beam into the substrate as a guided beam. The MPE region may include a plurality of diffractive features which exhibit periodicity along at least a first axis of periodicity and a second axis of periodicity. The MPE region may be positioned to receive the guided beam from the ICG region and to diffract it in a plurality of directions to create a plurality of diffracted beams. The EPE region may overlap the MPE region and may out couple one or more of the diffracted beams from the optically transmissive substrate as output beams.
    Type: Grant
    Filed: October 23, 2020
    Date of Patent: May 31, 2022
    Assignee: Magic Leap, Inc.
    Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
  • Publication number: 20220166971
    Abstract: A method of video processing includes determining, for a conversion between a current block of a first picture of a video and a bitstream representation of the video, a motion candidate based on motion information from a second picture according to a rule. The rule specifies that a position from which the motion information is accessed is constrained to be within a specific subpicture of the second picture. The method also includes performing the conversion based on the determining.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 26, 2022
    Inventors: Kai ZHANG, Zhipin DENG, Hongbin LIU, Li ZHANG, Jizheng XU
  • Publication number: 20220166993
    Abstract: A method of visual media processing includes determining a size of a buffer to store reference samples for prediction in an intra block copy mode; and performing a conversion between a current video block of visual media data and a bitstream representation of the current video block, using the reference samples stored in the buffer, wherein the conversion is performed in the intra block copy mode which is based on motion information related to a reconstructed block located in same video region with the current video block without referring to a reference picture.
    Type: Application
    Filed: January 10, 2022
    Publication date: May 26, 2022
    Inventors: Jizheng XU, Li ZHANG, Kai ZHANG, Hongbin LIU, Yue WANG
  • Publication number: 20220163838
    Abstract: The present disclosure provides a display device, including: a backlight module; side frames on different sides of the display module; a first supporting part is provided on at least one side frame, and extends toward a middle part of the backlight module; a panel assembly on a light-emitting side of the backlight module and including a first display panel, a second display panel and a connection layer between the first display panel and the second display panel, where the first display panel, the second display panel and the connection layer define an accommodation space, the first supporting part extends into the accommodation space, the first display panel is on a side of the first supporting part away from the backlight module, and the second display panel is supported by the backlight module; the first display panel and the side frame overlap in a thickness direction of the display device.
    Type: Application
    Filed: September 27, 2021
    Publication date: May 26, 2022
    Inventors: Yuhang LIN, Hui YU, Liri CHEN, Chengkun LIU, Han ZHANG, Ming CHEN, Jie LIU, Kai DIAO
  • Publication number: 20220160897
    Abstract: A method of promoting axonal regeneration can include directing neuronal lipid synthesis away from triglyceride synthesis and toward phospholipid synthesis. The method can include administering to the patient a therapeutically effective amount of an inhibitor compound selected from the group consisting of a Lipin-1 inhibitor, a diglyceride acyltransferase inhibitor, and combinations thereof or administering a gene editing therapy to the patient that reduces expression of LIPIN1 or a diglyceride acyltransferase gene.
    Type: Application
    Filed: November 25, 2020
    Publication date: May 26, 2022
    Inventors: Chao YANG, Xu WANG, Kai LIU
  • Publication number: 20220166643
    Abstract: A vehicle data analysis device and a vehicle data analysis method thereof are provided. The vehicle data analysis device receives a sensing data and a controller area network (CAN) message, and performs a similarity comparison on the sensing data and a plurality of bytes of a data field of the CAN message to determine whether the CAN message is a target CAN message corresponding to the sensing data.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 26, 2022
    Inventors: I-Chou HUNG, Chih-Min SHIH, Hsing-Yu CHEN, Shih-Sian JHUANG, Wen-Kai LIU
  • Publication number: 20220166985
    Abstract: A method of video processing includes performing a conversion between a video unit of a video and a coded representation of the video using at least a video picture. Only one of a sub-picture coding mode or a resolution-changing coding mode is enabled for the video unit. The sub-picture coding mode is a mode in which the video picture is divided into multiple sub-pictures, and the resolution-changing coding mode is a mode in which a resolution of the video picture is adjusted during the conversion.
    Type: Application
    Filed: February 4, 2022
    Publication date: May 26, 2022
    Inventors: Kai ZHANG, Zhipin DENG, Hongbin LIU, Li ZHANG, Jizheng XU
  • Publication number: 20220162037
    Abstract: A wire retracting device includes a base having a platform, a limiting board disposed on the base, a cover including a top surface and a side wall, a slide block slidably disposed on a sliding area, and a transmission wire disposed in an accommodating space formed between the cover and the base. An annular wall is arranged on the platform, and has a limiting portion that has a first stop portion and a second stop portion respectively formed on two sides thereof. A gap, in which the cover is limited to being movable, is formed between the limiting board and the platform. The top surface has a grooved opening, and a lever is arranged on an inner edge thereof. The side wall is disposed along an edge of the top surface. The sliding area is formed between the inner edge of the grooved opening and the annular wall.
    Type: Application
    Filed: April 15, 2021
    Publication date: May 26, 2022
    Inventors: YUN-KAI YU, CHANG-CHENG LIN, KUO-KUANG LIU, DER-JIUH JAN
  • Patent number: 11343203
    Abstract: This invention discloses a hierarchical switching fabric and deadlock avoidance method for ultra high radix network routers. The hierarchical switching fabric comprises a network-on-chip and K multi-port components. The multi-port component comprises a port module configured to receive packets by a high speed serializer/deserializer, code and format the packets, send the packets to a corresponding hyper packet module after coding and format conversion, and send the packets sent by the hyper packet module to the network; and the hyper packet module configured to perform protocol processing for the received data link level packets, discard illegal packets, forward legitimate packets to the network-on-chip, perform data error correcting, format conversion and channel mapping for the packets received from the network-on-chip, and send the packets to the corresponding port module.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: May 24, 2022
    Assignee: NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY
    Inventors: Kai Lu, Qiang Wang, Mingche Lai, Junsheng Chang, Pingjing Lu, Xingyun Qi, Yi Dai, Fangxu Lv, Jiaqing Xu, Jijun Cao, Canwen Xiao, Lu Liu
  • Patent number: 11340628
    Abstract: Provided are a marker-combined simultaneous localization and mapping (SLAM) navigation method, device and system. The method includes: providing an initialization area for a located object, where at least one of the initialization area for a located object, a travelling path of a located object, and a docking device of the located object is provided with an marker including at least one of pose information, identification information and non-identification graphic information; controlling the located object to perform at least one of following operations: starting from the initialization area for a located object, and based on the marker, determining an initial pose of the located object; when the marker is passed on the travelling path, updating a current pose of the located object based on the marker; and when docking with the docking device, adjusting a relative pose between the located object and the docking device based on the marker.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: May 24, 2022
    Assignee: Beijing Geekplus Technology Co., Ltd.
    Inventors: Yufeng Yu, Hongbo Li, Kai Liu, Zheng Wang
  • Patent number: 11341716
    Abstract: An augmented-reality system includes an image capture device that obtains a captured image, an image processing unit that receives and processes the captured image to determine space configuration of a scene; a user interface that receives a position of a fiducial point inputted by a user; and a rendering device that superimposes a fiducial mark at the position of the fiducial point on the captured image. The rendering device superimposes a first computer-generated image representing a sensor at an install height above the fiducial point and on a wall of the captured image.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: May 24, 2022
    Assignee: Climax Technology Co., Ltd.
    Inventors: Yi-Kai Chen, Tang-Hui Liu, Chung-Yuan Huang
  • Patent number: 11343529
    Abstract: A method of video processing includes determining a first motion displacement Vx(x,y) at a position (x,y) and a second motion displacement Vy(x,y) at the position (x,y) in a video block coded using an optical flow based method, wherein x and y are fractional numbers, where Vx(x,y) and Vy(x,y) are determined based at least on the position (x,y) and a center position of a basic video block of the video block, and performing a conversion between the video block and a bitstream representation of the current video block using the first motion displacement and the second motion displacement.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 24, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Jizheng Xu, Yue Wang