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: 20220150475
    Abstract: Devices, systems and methods for video processing are described. An exemplary method for video processing includes determining, for a conversion between a current block of a video and a bitstream representation of the video, that a neighboring block of the current block that is coded in a palette mode is processed as an intra-coded block having a default mode during a construction of a list of most probable modes (MPM) candidates of the current block in case the neighboring block is located above or left of the current block. The method also includes performing the conversion based on the determining.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Inventors: Weijia ZHU, Li ZHANG, Jizheng XU, Kai ZHANG, Hongbin LIU, Yue WANG
  • Publication number: 20220150491
    Abstract: Methods, systems, and devices for coding or decoding video wherein the picture partition mode is based on block size are described. An example method for video processing includes using a dimension of a virtual pipeline data unit (VPDU) used for a conversion between a video comprising one or more video regions comprising one or more video blocks and a bitstream representation of the video to perform a determination of whether a ternary-tree (TT) or a binary tree (BT) partitioning of a video block of the one or more video blocks is enabled, and performing, based on the determination, the conversion, wherein the dimension is equal to VSize in luma samples, wherein dimensions of the video block are CtbSizeY in luma samples, wherein VSize=min(M, CtbSizeY), and wherein M is a positive integer.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Zhipin DENG, Li ZHANG, Kai ZHANG, Hongbin LIU
  • Publication number: 20220146339
    Abstract: Disclosed are a preparation method for a graphene aerogel array sensor and use thereof. A miniature graphene aerogel array device is prepared by combining in-situ printing and solvent plasticization and foaming, which has excellent flexibility and stability, and is suitable for use in a variety of scenarios, such as sensors, and energy storage devices, etc. The array sensor provided in the present disclosure exhibites extremely high stability, high accuracy and reliability. Combining with deep machine learning, the array sensor can be endowed with the function of learning and recognition of machine intelligence, thus greatly promoting the development of the next generation of artificial intelligence.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: ZHEN XU, KAI PANG, CHAO GAO, XIAOTING LIU
  • Publication number: 20220150498
    Abstract: A method of video processing is described. The method includes making a first determination, for a chroma block of a video, whether a non-normal chroma intra prediction mode is applied to the chroma block of a video; making a second determination, for a luma block corresponding to the chroma block, that a luma intra prediction mode is applied to the luma block; making a third determination that a transform set or a transform matrix is applied to the chroma block based on the luma intra prediction mode; and performing a conversion between the video and a coded representation of the video according to the third determination, and wherein the non-normal chroma intra prediction mode comprises coding the chroma block without using extrapolated neighboring pixel values along a chroma prediction direction.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Inventors: Li ZHANG, Kai ZHANG, Hongbin LIU, Yue WANG
  • Publication number: 20220150508
    Abstract: Devices, systems and methods for digital video coding, which includes restrictions on decoder-side motion vector derivation based on coding information, are described. An exemplary method for video processing includes making a decision, for a conversion between a current block of a video and a bitstream representation of the video, regarding a selective enablement of a decoder side motion vector derivation (DMVD) tool for the current block, the DMVD tool deriving a refinement of motion information signaled in the bitstream representation, and the conversion using a merge mode and motion vector differences that are indicated by a motion direction and a motion magnitude, and performing, based on the decision, a conversion between the current block and the bitstream representation.
    Type: Application
    Filed: January 20, 2022
    Publication date: May 12, 2022
    Inventors: Hongbin LIU, Li ZHANG, Kai ZHANG, Yue WANG
  • Publication number: 20220150474
    Abstract: A method of video processing includes maintaining, for 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, a buffer comprising reference samples from the current picture for a derivation of prediction samples of the current video block. One or more reference samples in the buffer that are marked unavailable for the derivation have values outside of a pixel value range.
    Type: Application
    Filed: January 7, 2022
    Publication date: May 12, 2022
    Inventors: Jizheng XU, Li ZHANG, Kai ZHANG, Hongbin LIU, Yue WANG
  • Publication number: 20220150476
    Abstract: A method for video processing is described. The method comprises: making a decision, for a conversion between a current video block of a video picture of a video and a coded representation of the video, regarding a size of a reference region of the video picture from which reference samples are used for predicting the current video block, based on a size of a virtual pipeline data unit (VPDU), a size of a coding tree block (CTB), or a size of a coding tree unit (CTU); and performing the conversion based on the decision.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Jizheng XU, Li ZHANG, Kai ZHANG, Hongbin LIU
  • Publication number: 20220150502
    Abstract: A method of video processing is described. The method includes determining, for a conversion between a current video block of a video unit of a video and a coded representation of the video, a default intra prediction mode for the video unit coded using a certain intra prediction mode such that a prediction block of the current video block is generated without extrapolating neighboring pixels of the current video block along a direction; and performing the conversion based on the determining.
    Type: Application
    Filed: January 27, 2022
    Publication date: May 12, 2022
    Inventors: Li ZHANG, Kai ZHANG, Hongbin LIU, Yue WANG
  • Publication number: 20220150492
    Abstract: Methods, systems, and devices for coding or decoding video wherein the picture partition mode is based on block size are described. An example method for video processing includes using a dimension of a virtual pipeline data unit (VPDU) used for a conversion between a video comprising one or more video regions comprising one or more video blocks and a bitstream representation of the video to perform a determination of whether a ternary-tree (TT) or a binary tree (BT) partitioning of a video block of the one or more video blocks is enabled, and performing, based on the determination, the conversion, wherein the dimension is equal to VSize in luma samples, wherein dimensions of the video block are CtbSizeY in luma samples, wherein VSize=min(M, CtbSizeY), and wherein M is a positive integer.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Zhipin Deng, Li Zhang, Kai Zhang, Hongbin Liu
  • Publication number: 20220150541
    Abstract: A method of video processing is described. The method includes: determining, based on a coding mode of a current video block of a video, whether a position dependent intra prediction combination (PDPC) method is used for coding the current video block based on a first rule, and performing a conversion between the current video block and a coded representation of the video according to the determining, wherein the PDPC method combines neighboring samples with a prediction signal of the current video block to generate a refined prediction signal of the current video block.
    Type: Application
    Filed: January 28, 2022
    Publication date: May 12, 2022
    Inventors: Hongbin LIU, Li ZHANG, Kai ZHANG, Jizheng XU, Yue WANG
  • Publication number: 20220148191
    Abstract: An image segmentation method includes obtaining target domain images and source domain images, and segmenting the source domain images and the target domain images by using a generative network in a first generative adversarial network. The method further includes segmenting the source domain images and the target domain images by using a generative network in a second generative adversarial network, and determining a first source domain image and a second source domain image according to source domain segmentation losses, and determining a first target domain image and a second target domain image according to target domain segmentation losses. The method also includes performing cross training on the first generative adversarial network and the second generative adversarial network to obtain a trained first generative adversarial network; and segmenting a to-be-segmented image based on the generative network in the trained first generative adversarial network.
    Type: Application
    Filed: January 28, 2022
    Publication date: May 12, 2022
    Applicant: Tencent Technology (Shenzhen) Company Limited
    Inventors: Luyan LIU, Kai MA, Yefeng ZHENG
  • Publication number: 20220142629
    Abstract: The present disclosure generally relates to a surgical instrument. In some embodiments, the flexible surgical instrument, comprising: a distal structural body comprising first distal structural segment and second distal structural segment, the first distal structural segment comprising a first distal fixing disk and first distal segment structural backbones, the second distal structural segment comprising a second distal fixing disk and second distal segment structural backbones; and a proximal structural body comprising a proximal structural segment, the proximal structural segment comprising a proximal fixing disk, first proximal segment structural backbones, and second proximal segment structural backbones, the first proximal segment structural backbones being connected to the first distal segment structural backbones in a crossed arrangement; or the second proximal segment structural backbones being connected to the second distal segment structural backbones in a crossed arrangement.
    Type: Application
    Filed: January 19, 2022
    Publication date: May 12, 2022
    Inventors: Kai XU, Zhengchen DAI, TianLai DONG, Jiangran ZHAO, Huan LIU, Bo LIANG, Zhixiong YANG, Zhijun ZHU
  • Publication number: 20220150216
    Abstract: Embodiments of this application disclose a device identification method and a related apparatus, to reduce costs of identifying whether a device that accesses a network is an AP device. The method in the embodiments of this application includes: when a type of the device that accesses the network needs to be identified, obtaining a MAC address of the access device, and obtaining a MAC address of a Wi-Fi hotspot around a network access device; and then comparing the MAC address of the access device with the MAC address of the Wi-Fi hotspot, and determining, if the MAC address of the access device and the MAC address of the Wi-Fi hotspot belong to a same address segment, that the access device is an AP device.
    Type: Application
    Filed: January 26, 2022
    Publication date: May 12, 2022
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Bo ZHANG, Ping HUANG, Kai ZHU, Shusheng LIU, Haiyan WANG, Bin ZHOU
  • Publication number: 20220150015
    Abstract: Embodiments of the present invention provide duplication schemes for control frames to extend the range of LPI in the 6 GHz wireless band for EHT WLAN. Duplicate 20 MHz legacy preambles containing L-STF, L-LTF, L-SIG and RL-SIG, U-SIG and EHT-SIG fields may be used to transmit beacon and other control frames using duplicate PPDUs to extend transmission range thereof. Non-HT duplication can be performed to maintain backwards compatibility with legacy devices. HE duplication can include duplication of a 20 MHz HE SU PPDUs over 40 MHz, 80 MHz, 160 MHz or 320 MHz portions, for example. DCM+MCS0 or duplication over DCM+MCS0 may be applied to the payload, and a duplication indication is inserted in the U-SIG field or EHT-SIG field to indicate if the duplication is applied to the payload over DCM+MCS0.
    Type: Application
    Filed: November 8, 2021
    Publication date: May 12, 2022
    Inventors: Jianhan Liu, Yongho Seok, Kai Ying Lu, Thomas Edward Pare, JR.
  • Publication number: 20220150540
    Abstract: A method for video processing is described. The method includes determining, for a conversion between a current video block of a video picture of a video and a coded representation of the video, a number of reference samples in a reference region of the video picture used for predicting the current video block, based on a rule, wherein the rule specifies that the number of reference samples is limited to a certain range; and performing, based on the determining, the conversion.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Jizheng XU, Li ZHANG, Kai ZHANG, Hongbin LIU
  • Publication number: 20220150544
    Abstract: Methods, systems, and devices for coding or decoding video wherein the picture partition mode is based on block size are described. An example method for video processing includes using a dimension of a virtual pipeline data unit (VPDU) used for a conversion between a video comprising one or more video regions comprising one or more video blocks and a bitstream representation of the video to perform a determination of whether a ternary-tree (TT) or a binary tree (BT) partitioning of a video block of the one or more video blocks is enabled, and performing, based on the determination, the conversion, wherein the dimension is equal to VSize in luma samples, wherein dimensions of the video block are CtbSizeY in luma samples, wherein VSize=min(M, CtbSizeY), and wherein M is a positive integer.
    Type: Application
    Filed: January 24, 2022
    Publication date: May 12, 2022
    Inventors: Zhipin DENG, Li ZHANG, Kai ZHANG, Hongbin LIU
  • Publication number: 20220137417
    Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an input coupling grating (ICG) region. The ICG region can couple an input beam into the substrate of the eyepiece waveguide as a guided beam. A first combined pupil expander-extractor (CPE) grating region can be formed on or in a surface of the substrate. The first CPE grating region can receive the guided beam, create a first plurality of diffracted beams at a plurality of distributed locations, and out-couple a first plurality of output beams. The eyepiece waveguide can also include a second CPE grating region formed on or in the opposite surface of the substrate. The second CPE grating region can receive the guided beam, create a second plurality of diffracted beams at a plurality of distributed locations, and out-couple a second plurality of output beams.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Samarth Bhargava, Victor Kai Liu, Kevin Messer
  • Publication number: 20220136623
    Abstract: The field of metal hoses, and specifically, an explosion-proof flexible metal hose for natural gas pipelines is concerned. The problems that the existing metal hose has low intensity and high flow velocity are solved. The explosion-proof flexible metal hose for natural gas pipelines includes a metal hose. A side of the metal hose is provided with a fixing assembly composed of a flange and a loose flange, and an other side of the metal hose is provided with a welding neck flange configured for fixing. The metal hose is coverd with a steel band with a multilayer structure. The metal hose and two ends of the steel band are fixed through cooperation between metal short sections and pressing clamp rings. A reinforcement coil is wound around the metal hose. According to the device, the existing metal hose structure is optimized. The reinforcement coil is designed in the metal hose, so that the intensity of the metal hose is improved, and a dual anti-explosion effect of the metal hose is achieved.
    Type: Application
    Filed: September 3, 2021
    Publication date: May 5, 2022
    Inventors: Jingyi Guo, Kai Liu, Linlin He, Ronggang Liu, Hufeng Xia, Lei Zhang
  • Publication number: 20220133396
    Abstract: An end effector assembly includes a first jaw member having a first tissue contact surface and a second jaw member having a second tissue contact surface. The second jaw member is pivotally coupled to the first jaw member. The tissue contact surfaces may include raised steps that define an exhaust channel. A longitudinally extending knife slot may be defined in one or both of the tissue contact surfaces. One or more exhaust slots, which may be defined in one or both of the tissue contact surfaces, are in communication with the knife slot. The exhaust channel and the exhaust slots direct fluid away from the jaw members to minimize thermal damage risks associated with tissue sealing.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Weijiang Ding, Jianjiang Chen, Daniel A. Joseph, Kai Liu, William H. Nau, JR., Arlen K. Ward, William R. Whitney
  • Publication number: 20220137203
    Abstract: A trajectory identification apparatus, method, and computer program product thereof are provided. The apparatus converts the object positions into a two-dimensional space to generate and sequence a plurality of object coordinates, calculates a distance of adjacent object coordinates to generate a trajectory-time image. The apparatus calculates a sum-distance, and calculates an initial speed based on a first distance and the sum-distance to generate a trajectory-speed image. The apparatus separates the trajectory-time image into a first channelizing datum, separates trajectory-speed image into a second channelizing datum, and overlaps the first channelizing datum and the second channelizing datum to generate a to-be detected channelizing datum.
    Type: Application
    Filed: December 4, 2020
    Publication date: May 5, 2022
    Inventors: Chia-Hsin CHAN, Wen-Kai LIU