Patents by Inventor Kai Zhang

Kai 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).

  • Publication number: 20220201310
    Abstract: A method of video processing is described. The method includes: deriving, for a conversion between a current block of a video and a coded representation of the video, a prediction block for the current block that is determined according to a tool in which weights are used to determine a weighted sum of two initial prediction blocks used to determine the prediction block; and performing the conversion using the prediction block; wherein the deriving includes: applying the weights to two intermediate prediction samples that respectively belong to the two initial prediction blocks to derive a final prediction sample; and performing a right shift operation for the final prediction sample, wherein the right shift operation is pbSample>> (shift1+3)), wherein pbSample represents the final prediction sample, shift1 is set equal to Max(2, 14?bitDepth); and determining the prediction block based on the final prediction sample.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 23, 2022
    Inventors: Yang WANG, Hongbin LIU, Li ZHANG, Kai ZHANG, Jizheng XU, Yue WANG
  • Publication number: 20220199279
    Abstract: A electronic blackbody cavity is provided. The electronic blackbody cavity comprises an inner surface; a chamber surrounded by the inner surface; an opening configured to make an electron beam enter the chamber; and a porous carbon material layer located on the inner surface. The porous carbon material layer consists of a plurality of carbon material particles and a plurality of micro gaps. The plurality of micro gaps are defined by the plurality of carbon material particles. A secondary electron detection device using the electronic blackbody cavity is also provided.
    Type: Application
    Filed: April 8, 2021
    Publication date: June 23, 2022
    Inventors: KE ZHANG, GUO CHEN, PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
  • Publication number: 20220201314
    Abstract: A method of video processing is described. The method includes: making a first determination about whether a collocated video block of a video block of a video is coded using an inter coding mode or a non-inter coding mode; making a second determination, based on the first determination, about availability of motion vectors of the collocated video block or a mode of derivation of motion vectors for the collocated video block; and performing a conversion between the video block and a coded representation of the video based on the second determination.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 23, 2022
    Inventors: Yang WANG, Hongbin LIU, Li ZHANG, Kai ZHANG, Jizheng XU, Yue WANG
  • Publication number: 20220196854
    Abstract: An electron blackbody material is provided. The electron blackbody material is a porous carbon layer. The porous carbon layer consists of a plurality of carbon material particles and a plurality of micro gaps, the plurality of micro gaps are located between the plurality of carbon material particles. An electron detector using the electron blackbody material is also provided.
    Type: Application
    Filed: April 8, 2021
    Publication date: June 23, 2022
    Inventors: KE ZHANG, GUO CHEN, PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
  • Publication number: 20220197301
    Abstract: This document describes methods and systems for vehicle localization based on radar detections. Radar localization starts with building a radar reference map. The radar reference map may be generated and updated using different techniques as described herein. Once a radar reference map is available, real-time localization may be achieved with inexpensive radar sensors and navigation systems. Using the techniques described in this document, the data from the radar sensors and the navigation systems may be processed to identify stationary localization objects, or landmarks, in the vicinity of the vehicle. Comparing the landmark data originating from the onboard sensors and systems of the vehicle with landmark data detailed in the radar reference map may generate an accurate pose of the vehicle in its environment. By using inexpensive radar systems and lower quality navigation systems, a highly accurate vehicle pose may be obtained in a cost-effective manner.
    Type: Application
    Filed: July 2, 2021
    Publication date: June 23, 2022
    Inventors: Mohamed A. Moawad, Aniello Sorrentino, Nanhu Chen, Michael H. Laur, Jakub Porebski, Amith Somanath, Aron Sommer, Kai Zhang, Uri Iurgel, Alexander Ioffe, Krzysztof Kogut, Ceyhan Karabulut, Damjan Karanovic
  • Publication number: 20220196830
    Abstract: Methods and systems are described that enable vehicle routing based on availability of radar-localization objects. A request to navigate to a destination is received, and at least two possible routes to the destination are determined. Availabilities of radar-localization objects for the possible routes are determined, and a route is selected based on the availabilities of the radar-localization objects. Furthermore, while traveling along a route, the vehicle is localized based on radar detections of radar-localization objects. A radar-localization quality of the localizing is monitored, and a determination is made that the radar-localization quality has dropped or will drop. Based on the radar-localization quality dropping, the route is modified and/or an operation of a radar module is adjusted. In this way, availabilities of radar-localization objects may be used to select an optimal route and to adjust a current navigation along a route to minimize driver takeover.
    Type: Application
    Filed: May 6, 2021
    Publication date: June 23, 2022
    Inventors: Amith Somanath, Mohamed A. Moawad, Michael H. Laur, Nanhu Chen, Aniello Sorrentino, Aron Sommer, Kai Zhang, Jakub Porebski, Krzysztof Kogut
  • Publication number: 20220195619
    Abstract: A method for making an electronic blackbody structure is provided. The method comprises: providing a growing substrate; growing a carbon nanotube array on the growing substrate, the carbon nanotube array including a top surface and a bottom surface, the bottom surface being connected to the growing substrate; and separating the carbon nanotube array from the growing substrate, exposing the bottom surface of the carbon nanotube array, and the bottom surface of the carbon nanotube array is used to absorb electrons. An electronic blackbody structure is further provided.
    Type: Application
    Filed: April 8, 2021
    Publication date: June 23, 2022
    Inventors: KE ZHANG, GUO CHEN, PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
  • Publication number: 20220199361
    Abstract: A secondary electron probe is provided. The secondary electron probe comprises a porous carbon material layer. The porous carbon material layer consists of a plurality of carbon material particles and a plurality of micro gaps, the plurality of micro gaps are located between the plurality of carbon material particles. The porous carbon material layer is an electronic blackbody. A secondary electron detector and a scanning electron microscope probe using the secondary electron probe are also provided.
    Type: Application
    Filed: April 8, 2021
    Publication date: June 23, 2022
    Inventors: KE ZHANG, GUO CHEN, PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
  • Publication number: 20220196482
    Abstract: An device for measuring electron beam comprises a Faraday cup comprising an opening; a porous carbon material layer located on a surface of the Faraday cup and suspended at the opening; and an electricity meter electrically connected to the porous carbon material layer. A length of a suspended portion of the porous carbon material layer is greater than or equal to a maximum diameter of an electron beam to be measured. A diameter or a width of the porous carbon material layer is smaller than a minimum diameter of a cross section of the electron beam to be measured. The porous carbon material layer comprises a plurality of carbon material particles, and a plurality of micro gaps exist between the plurality of carbon material particles. A method for measuring an electron beam using the device for measuring electron beam is also provided.
    Type: Application
    Filed: April 8, 2021
    Publication date: June 23, 2022
    Inventors: KE ZHANG, GUO CHEN, PENG LIU, KAI-LI JIANG, SHOU-SHAN FAN
  • Publication number: 20220196828
    Abstract: Methods and systems are described that enable radar reference map generation. A high-definition (HD) map is received and one or more HD map objects within the HD map are determined. Attributes of the respective HD map objects are determined, and, for each HD map object, one or more occupancy cells of a radar occupancy grid are indicated as occupied space based on the attributes of the respective HD map object. By doing so, a radar reference map may be generated without a vehicle traversing through an area corresponding to the radar reference map.
    Type: Application
    Filed: July 2, 2021
    Publication date: June 23, 2022
    Inventors: Aniello Sorrentino, Mohamed A. Moawad, Nanhu Chen, Michael H. Laur, Jakub Porebski, Amith Somanath, Aron Sommer, Kai Zhang, Uri Iurgel, Alexander Ioffe, Krzysztof Kogut, Ceyhan Karabulut, Damjan Karanovic
  • Publication number: 20220196829
    Abstract: Methods and systems are described that enable radar reference map generation. A radar occupancy grid is received, and radar attributes are determined from occupancy probabilities within the radar occupancy grid. Radar reference map cells are formed, and the radar attributes are used to determine Gaussians for the radar reference map cells that contain a plurality of the radar attributes. A radar reference map is then generated that includes the Gaussians determined for the radar referenced map cells that contain the plurality of radar attributes. By doing so, the generated radar reference map is accurate while being spatially efficient.
    Type: Application
    Filed: July 2, 2021
    Publication date: June 23, 2022
    Inventors: Nanhu Chen, Amith Somanath, Mohamed A. Moawad, Aniello Sorrentino, Michael H. Laur, Jakub Porebski, Aron Sommer, Kai Zhang, Uri Iurgel, Alexander Ioffe, Krzysztof Kogut, Ceyhan Karabulut, Damjan Karanovic
  • Patent number: 11368712
    Abstract: Devices, systems and methods for digital video coding, which includes motion prediction based on updated motion vectors generated using two-step inter-prediction, are described. Methods for clipping of updated MV or derived MV are described. An exemplary method for video coding includes: determining original motion information for a current block; updating original motion vectors of the original motion information for the current block based on a refining method; clipping the updated motion vectors to be within a range; and performing a conversion between the current block and a bitstream representation of a video including the current block, based on the clipped updated motion vectors.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: June 21, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Hongbin Liu, Li Zhang, Kai Zhang, Yue Wang
  • Patent number: 11367019
    Abstract: A data processing method includes: obtaining first sample data, and determining a target model and a feature set corresponding to the target model; obtaining second sample data, and dividing the second sample data into a development data set and a validation data set based on a predetermined proportion or a predetermined chronological order; respectively determining final sample data of the first sample data and retained sample data of the development data set based on the target model, the feature set corresponding to the target model, the first sample data, the development data set and the validation data set; and merging the final sample data and the retained sample data to obtain a modeling data set corresponding to a first business project. A data processing apparatus, and a computer device for implementing the data processing method are further provided.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: June 21, 2022
    Assignee: Shanghai IceKredit, Inc.
    Inventors: Lingyun Gu, Minqi Xie, Wan Duan, Yizeng Huang, Tao Zhang, Kai Zhang
  • Patent number: 11368711
    Abstract: A video processing method is disclosed to include: determining that a coding mode of a current video block is an affine mode; determining, for the current video block, an applicability mode of a prediction refinement optical flow (PROF) procedure with the affine mode according to a rule that specifies a condition for applying the PROF procedure; and performing, based on the determining, a conversion between the current video block and a coded representation of the video; wherein, during the PROF procedure, one or more initial predictions for the current video block are computed at a sub-block level and refined using an optical flow calculation.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: June 21, 2022
    Assignees: BEIJING BYTEDANCE NETWORK TECHNOLOGY CO., LTD., BYTEDANCE INC.
    Inventors: Kai Zhang, Li Zhang, Hongbin Liu, Yue Wang
  • Publication number: 20220190056
    Abstract: The present disclosure provides a display panel and a display device. The display panel includes a display region; the display region includes a first display region and a second display region arranged in a second direction; each scanning signal line in the first display region is electrically connected with less pixels than each scanning signal line in the second display region; the first display region is divided into a first sub-display region and a second sub-display region arranged in the second direction; and the first sub-display region is located at the side far away from the second display region.
    Type: Application
    Filed: July 20, 2020
    Publication date: June 16, 2022
    Inventors: Yonglin GUO, Kai ZHANG, Yunsheng XIAO, Tingliang LIU
  • Publication number: 20220185774
    Abstract: Provided is a compound of formula I or II, a stereoisomer, a tautomer, a geometrical isomer, a solvate, an active metabolite, a hydrate, a prodrug or a pharmaceutically acceptable salt thereof, a pharmaceutical composition thereof, and the medical uses thereof in treating diseases benefiting from the capsid protein assembly inhibitor, particularly diseases caused by hepatitis B virus infection.
    Type: Application
    Filed: September 27, 2019
    Publication date: June 16, 2022
    Inventors: Yinsheng ZHANG, Wangwei AO, Yuan LI, Hui WANG, Hangzhou SHEN, Jie NI, Huan ZHANG, Jie WU, Li ZHANG, Kai CAO, Peng LU, Xushi LIU, Jie WANG, Tianxiao ZHAO, Xingfeng GE, Dandan LU, Shuo CHEN, Xueqin MA, Wei SHI, Xiaojin WANG, Hongjiang XU
  • Publication number: 20220191475
    Abstract: A method of video processing is described. The method includes performing a conversion between a current video block of a video picture of a video and a coded representation of the video according to a buffer allocation rule, wherein the conversion uses an intra block copy (IBC) mode in which a prediction of the current video block is derived based on sample values from a same video slice with the current video block, and wherein the sample values are determined by block vectors, wherein the buffer allocation rule specifies that a virtual buffer allocated for the conversion using the IBC mode is greater than a minimum size of memory for storing a portion of the video picture searched for determining the block vectors.
    Type: Application
    Filed: March 3, 2022
    Publication date: June 16, 2022
    Inventors: Jizheng XU, Li ZHANG, Kai ZHANG, Hongbin LIU
  • Publication number: 20220191447
    Abstract: A method of video processing is provided. The method includes: determining, for a conversion between a current video unit of a video and a coded representation of the video, that applicability of a first coding tool and a second coding tool is mutually exclusive; and performing the conversion based on the determining, wherein the first coding tool corresponds to an adaptive color space transformation (ACT) tool; wherein use of the ACT tool comprises: converting, during encoding a representation of a visual signal from a first color domain to a second color domain, or converting during decoding, a representation of a visual signal from the second color domain to the first color domain.
    Type: Application
    Filed: December 20, 2021
    Publication date: June 16, 2022
    Inventors: Li ZHANG, Jizheng XU, Kai ZHANG, Hongbin LIU, Weijia ZHU, Yue WANG
  • Publication number: 20220191483
    Abstract: A method implemented by a video coding apparatus. The method includes selecting a neural network (NN) filter model from a plurality of NN filter model candidates for each video unit. The NN filter model selected for a first video unit is different than the NN filter model selected for a second video unit. The method also includes converting between a video media file and a bitstream based on the one or more NN filter models selected for the video unit. A corresponding video coding apparatus and non-transitory computer readable medium are also disclosed.
    Type: Application
    Filed: December 7, 2021
    Publication date: June 16, 2022
    Inventors: Yue Li, Li Zhang, Kai Zhang
  • Publication number: 20220191484
    Abstract: A method of video processing is described. The method includes determining, for subblocks of a current video block of a video, subblock boundaries to which a deblocking filter is to be applied according to a rule; and performing a conversion between the video and a coded representation of the video using the deblocking filter, wherein the rule specifies that a deblocking filter length is determined without checking a relationship between i) a sum of a position of a subblock of the current video block and a predefined value and ii) a width or a height of the current video block.
    Type: Application
    Filed: February 23, 2022
    Publication date: June 16, 2022
    Inventors: Zhipin DENG, Li ZHANG, Kai ZHANG, Hongbin LIU