Patents by Inventor Da Zhang

Da 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: 20200336455
    Abstract: A service enables a command that refers to a file system object using a hierarchical namespace identifier to be executed against the file system object in a flat namespace. The service selectively distributes the command to one of a plurality of name resolution nodes based on a directory name included in the hierarchical namespace identifier. The identified node resolves the directory name to a flat namespace identifier that is used to execute the command against the flat namespace. After communicating with at least one storage node to resolve a directory name, each name resolution node stores a mapping of the directory name to the corresponding flat namespace identifier in a cache, so that subsequent resolutions of that directory name may be performed more efficiently. Cache entries may be invalidated when an operation occurs that impacts the relevant mapping and/or based on system considerations such as cache expiry.
    Type: Application
    Filed: July 6, 2020
    Publication date: October 22, 2020
    Inventors: Georgi M. Chalakov, Shane Kumar Mainali, Thomas Leo Marquardt, Zichen Sun, Maneesh Sah, Esfandiar Manii, Saurabh Pant, Dana Yulian Kaban, Saher B. Ahwal, Jun Chen, Da Zhou, Amit Pratap Singh, Junhua Gu, Shaoyu Zhang, Wei Chen, Jingchao Zhang, Quan Zhang, Arild Einar Skjoldsvold
  • Patent number: 10809363
    Abstract: An anti-interference ranging method and an anti-interference ranging apparatus are provided. The method includes: detecting, by a first light detection and ranging device, whether a light detection process is interfered by a second light detection and ranging device in the ranging system; delaying, by the first light detection and ranging device, the light detection process for a preset time period if it is detected that the light detection process is interfered by the second light detection and ranging device; and acquiring, by the first light detection and ranging device, detection data collected in the light detection process, and processing, by the first light detection and ranging device, the detection data to obtain a ranging result if it is detected that the light detection process is not interfered by the second light detection and ranging device.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: October 20, 2020
    Assignee: BENEWAKE (BEIJING) CO., LTD.
    Inventors: Qiang Feng, Suo Lu, Xuxing Li, Lun Wo, Ying Zhang, Hao Liu, Qingshun Zhang, Kai Zheng, Da Shu, Yuan Li
  • Patent number: 10801869
    Abstract: Provided are a flowrate measurement device and a flowrate measurement method. The flowrate measurement device includes an attachment portion configured to attach the flowrate measurement device to an object to be measured, and a measurement portion. The measurement portion includes a first ultrasonic transmitter, a second ultrasonic transmitter and a plurality of signal receivers between the first ultrasonic transmitter and the second ultrasonic transmitter. The plurality of signal receivers are spaced apart from each other. The first ultrasonic transmitter, the second ultrasonic transmitter and the plurality of the signal receivers are all disposed on the attachment portion, such that both the first ultrasonic transmitter and the second ultrasonic transmitter are capable of emitting an ultrasonic wave signal to the object to be measured. The signal receivers are capable of receiving an ultrasonic wave signal reflected from the object to be measured.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: October 13, 2020
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dong Ji, Feng Luo, Nan Zhang, Guoliang Liu, Da Liu, Xiaodong Fang, Jialin Huang, Guoqiang Zhao, Jie Liu
  • Publication number: 20200317226
    Abstract: A method for data management for an autonomous vehicle may include transmitting a polling request to a first server to obtain a task. The task may be a remote task request, and the task may be associated with obtaining, from the autonomous vehicle, data related to one or more subjects via a mobile network. The method may also include receiving the task from the first server based on the polling request. The method may also include obtaining the data based on the task. The method may also include transmitting the data to a second server via the mobile network.
    Type: Application
    Filed: June 19, 2020
    Publication date: October 8, 2020
    Applicant: BEIJING VOYAGER TECHNOLOGY CO., LTD.
    Inventors: Fenglei WANG, Da HU, Zhigang ZHANG
  • Publication number: 20200320778
    Abstract: The present invention relates to a system and method for image processing. An image data processing system is disclosed comprising an image cutting engine for image cutting based on image data; a region of interest processing engine for selecting at least a rendering method for a region of interest; a processing engine for adjusting sampling rate; and rendering engine for rendering the image, with the rendering method selected by the region of interest processing engine. More particularly, the present invention relates to image processing techniques that perform image manipulation, volume rendering, displaying targeted regions of interest and other related functions.
    Type: Application
    Filed: June 22, 2020
    Publication date: October 8, 2020
    Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Qi Duan, Chao Fu, Da Wu, Wenqing Liu, Liangliang Pan, Weidong Zhang
  • Patent number: 10789217
    Abstract: Methods, systems, and apparatuses are provided for a storage system that implements a hierarchical namespace service. A storage system includes a plurality of physical nodes and a plurality of sets of virtual nodes. Each set of virtual nodes is managed by a corresponding physical node. Each virtual node is configured to manage a respective set of directory blocks. Each directory block is a respective partition of a storage namespace and is managed by a corresponding single virtual node. Each virtual node maintains a directory block map. The directory block map maps file system object names in a hierarchical namespace to entity block identifiers in the flat namespace for entity blocks (files and folders) stored in directories corresponding to the managed set of directory blocks. Load balancing may be performed by moving virtual nodes between physical nodes, and by splitting directory blocks.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: September 29, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Georgi M. Chalakov, Shane Kumar Mainali, Thomas Leo Marquardt, Zichen Sun, Maneesh Sah, Esfandiar Manii, Saurabh Pant, Dana Yulian Kaban, Saher B. Ahwal, Jun Chen, Da Zhou, Amit Pratap Singh, Junhua Gu, Shaoyu Zhang, Wei Chen, Jingchao Zhang, Quan Zhang
  • Publication number: 20200294184
    Abstract: The present disclosure provides a GPU-based third-order low-rank tensor completion method. Operation steps of the method includes: (1) transmitting, by a CPU, input data DATA1 to a GPU, and initializing the loop count t=1; (2) obtaining, by the GPU, a third-order tensor Yt of a current loop t based on the least squares method; (3) obtaining, by the GPU, a third-order tensor Xt of the current loop t based on the least squares method; (4) checking, by the CPU, whether an end condition is met; and if the end condition is met, turning to (5); otherwise, increasing the loop count t by 1 and turning to (2) to continue the loop; and (5) outputting, by the GPU, output data DATA2 to the CPU. In the present disclosure, in the third-order low-rank tensor completion, a computational task with high concurrent processes is accelerated by using the GPU to improve computational efficiency.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 17, 2020
    Applicant: Tensor & Deep Learning Lab L.L.C.
    Inventors: Tao Zhang, Da Xu, Xiaoyang Liu
  • Publication number: 20200290192
    Abstract: A power tool includes an output shaft, a planet carrier, and a buffer mechanism. The planet carrier is configured to be rotatably connected with the output shaft to drive the output shaft during operation, and there is a gap between an inner side surface of the planet carrier and a circumferential surface of the output shaft. A buffer mechanism is provided on at least one of the inner side surface of the planet carrier and the circumferential surface of the output shaft near the gap. The buffer mechanism is configured not to actively apply pressure to the output shaft and the planet carrier, and to buffer the impact force between the output shaft and the planet carrier, when the output shaft slides relative to the planet carrier under the action of inertial force.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 17, 2020
    Inventors: Li Guo MA, Qing Feng ZHANG, Jun Da YANG
  • Publication number: 20200285380
    Abstract: In one example, a system for gesture buttons can include a processing resource and a non-transitory computer readable medium having stored thereon instructions to cause the processing resource to perform a first function in response to a gesture provided to the user interface, display a gesture button on the user interface, and perform a second function that is different than the first function in response to the gesture provided on the gesture button displayed on the user interface.
    Type: Application
    Filed: November 29, 2017
    Publication date: September 10, 2020
    Inventors: BING ZHANG, DA-LONG SUN, LI ZHANG, RONG-FENG CHEN
  • Publication number: 20200285859
    Abstract: A video summary generation method and apparatus, an electronic device, and a computer storage medium are provided. The method includes: performing feature extraction on each shot in a shot sequence of a video stream to be processed, to obtain an image feature of the shot, each shot including at least one frame of video image; obtaining a global feature of the shot according to all image features of the shot; determining a weight of the shot according to the image feature of the shot and the global feature; and obtaining a video summary of the video stream to be processed based on the weight of the shot.
    Type: Application
    Filed: May 27, 2020
    Publication date: September 10, 2020
    Inventors: Litong FENG, Da XIAO, Zhanghui KUANG, Wei ZHANG
  • Patent number: 10760649
    Abstract: A speed reducer includes an input shaft, an output shaft, and a gear assembly coupled to the input shaft. The gear assembly includes a housing, an external gear, and at least two internal gears. The external gear is located within the housing and inscribes the at least two internal gears. One side of the at least two internal gears is rotatably coupled to the input shaft, and another side of the at least two internal gears is coupled to a connecting column of the output shaft. The at least two internal gears are offset on the input shaft, and the input shaft drives the at least two internal gears to maintain engagement with the external gear. The connecting column maintains transmission of the output shaft and the at least two internal gears.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: September 1, 2020
    Assignees: HONGFUJIN PRECISION ELECTRONICS (ZHENGZHOU) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Eddy Liu, Wei-Da Yang, Po-Lin Su, Jie-Peng Kang, Liu-Ming Zhang, Su-Min Li, Guang-Xing Wang, Jie Lai
  • Publication number: 20200251980
    Abstract: A pulse width modulation (PWM) interleaving system is provided. The PWM interleaving system includes active harmonic filters (AHFs). The AHFs are disposed in parallel with each other and with a load. The AHFs are electrically coupled to a common coupling point that is electrically interposed between a grid and the load. The AHFs are configured to affect, by PWM, a characteristic of current flowing between the grid and the load. The PWM interleaving system further includes a controller operably coupled to the AHFs and configured to synchronize the PWMs of the AHFs to thereby cancel ripple currents propagating towards the grid.
    Type: Application
    Filed: September 26, 2018
    Publication date: August 6, 2020
    Inventors: Da Zhang, Thomas Bekasi, Ismail Agirman, Bassel Al-Annouf, Christopher S. Czerwinski, Jeffrey M. Izard
  • Patent number: 10735369
    Abstract: A service enables a command that refers to a file system object using a hierarchical namespace identifier to be executed against the file system object in a flat namespace. The service selectively distributes the command to one of a plurality of name resolution nodes based on a directory name included in the hierarchical namespace identifier. The identified node resolves the directory name to a flat namespace identifier that is used to execute the command against the flat namespace. After communicating with at least one storage node to resolve a directory name, each name resolution node stores a mapping of the directory name to the corresponding flat namespace identifier in a cache, so that subsequent resolutions of that directory name may be performed more efficiently. Cache entries may be invalidated when an operation occurs that impacts the relevant mapping and/or based on system considerations such as cache expiry.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: August 4, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Georgi M. Chalakov, Shane Kumar Mainali, Thomas Leo Marquardt, Zichen Sun, Maneesh Sah, Esfandiar Manii, Saurabh Pant, Dana Yulian Kaban, Saher B. Ahwal, Jun Chen, Da Zhou, Amit Pratap Singh, Junhua Gu, Shaoyu Zhang, Wei Chen, Jingchao Zhang, Quan Zhang, Arild Einar Skjoldsvold
  • Publication number: 20200227744
    Abstract: The present invention discloses a selenium-doped MXene material and a preparation method thereof, comprising the following steps: (1) adding MXene and an organic selenium source into a dispersant, and stirring to prepare a dispersion with a concentration of 10 mg/ml to 100 mg/ml, wherein a mass ratio of MXene and an organic selenium source is 0.1 to 1:1; (2) transferring the dispersion into a reaction kettle, heating to 110° C. to 230° C., reacting for 10 h to 30 h, and then naturally cooling to a room temperature; and (3) washing the product obtained in the step (2) with a cleaning agent, centrifuging to collect a precipitate, and drying the precipitate under vacuum to obtain the selenium-doped MXene material. The composite material prepared by the present invention has high specific surface area, good electrical conductivity, cycle stability performance, rate performance and high theoretical specific capacity.
    Type: Application
    Filed: August 2, 2019
    Publication date: July 16, 2020
    Inventors: Yelong ZHANG, Xiaodan XU, Hongyang SUN, Hao CHEN, Da WANG, Chi ZHANG, Weidong SONG, Yue GUO, Zheng LIU, Mei CHEN, Jinxiu WEN, Qingguang ZENG, Zhangquan PENG
  • Publication number: 20200222073
    Abstract: A medical forceps includes a handle, a traction string, a sleeve tube, a forceps base, a push-pull rod, two connecting members and two forceps jaws. The sleeve tube is connected to the forceps base. The traction string passes through the flexible spring tube and the forceps base, one end of the traction string is connected to the handle, and the other end thereof is connected to the push-pull rod. Middle parts of the two forceps jaws are hinged by a hinge shaft mounted on the forceps base. A lower part of the forceps jaw is hinged to one end of the respective connecting member, and the other end of the connecting member is hinged to the push-pull rod. The push-pull rod has two hinge centers for being respectively hinged to the two connecting members arranged in a crossed manner. The push-pull rod has two hinge centers.
    Type: Application
    Filed: May 10, 2019
    Publication date: July 16, 2020
    Applicant: ANREI MEDICAL (HANGZHOU) CO., LTD.
    Inventors: Rongnan ZHANG, Liming WANG, Da LEI
  • Publication number: 20200227745
    Abstract: The present invention discloses a tellurium-doped MXene composite material and a preparation method thereof, comprising the following steps: (1) adding MXene and a tellurium source into a dispersant to prepare a dispersion, and then stirring the dispersion; (2) heating the dispersion, reacting, and then cooling; (3) centrifuging the product obtained in the step (2), then washing and drying under vacuum; and (4) placing the dry product obtained in the step (3) into a corundum ark, and then transferring into a tubular furnace, heating under the protection of inert gas, retaining the temperature, and then cooling to obtain the tellurium-doped MXene composite material. The composite material prepared by the present invention can be used as a cathode of a potassium ion battery, which increases the interlamellar spacing, and optimizes an ion diffusion channel, so that the electrochemical performance of the potassium ion battery is improved.
    Type: Application
    Filed: July 31, 2019
    Publication date: July 16, 2020
    Inventors: Yelong ZHANG, Hongyang SUN, Xiaodan XU, Yuxuan FAN, Da WANG, Chi ZHANG, Weidong SONG, Mei CHEN, Jinxiu WEN, Yue GUO, Qingguang ZENG, Zhangquan PENG
  • Publication number: 20200223702
    Abstract: The present invention discloses a selenium-doped MXene composite nano-material and a preparation method thereof, comprising the following steps: (1) adding MXene and an organic selenium source into a dispersant, and stirring to prepare a dispersion with a concentration of 1 mg/ml to 100 mg/ml; (2) transferring the dispersion into a reaction kettle, then heating, reacting, and then naturally cooling to a room temperature; (3) washing the product obtained in the step (2) with a cleaning agent, then centrifuging to collect a precipitate, and drying the precipitate under vacuum; and (4) placing the sample obtained in the step (3) into a tubular furnace for calcination, introducing protective gas, heating, and then cooling to a room temperature to obtain the selenium-doped MXene composite nano-material. The material prepared by the present invention has high specific surface area, good electrical conductivity, cycle stability performance, rate performance and high theoretical specific capacity.
    Type: Application
    Filed: August 1, 2019
    Publication date: July 16, 2020
    Inventors: Yelong ZHANG, Xiaodan XU, Hongyang SUN, Chengwei LIU, Chi ZHANG, Da WANG, Weidong SONG, Jinxiu WEN, Yue GUO, Zheng LIU, Mei CHEN, Qingguang ZENG, Zhangquan PENG
  • Publication number: 20200215694
    Abstract: Provided are dynamic region division and region passage identification methods and a cleaning robot. The dynamic region division method includes: acquiring environment information collected by a robot when working in a first region; determining whether the robot has completed a work task in the first region, when a presence of a passage entering a second region is determined based on the environment information; and complementing a boundary at the passage to block the passage, when the work task is not completed. According to the technical solution provided by the embodiment of the present application, the occurrence probability of repeated sweeping and miss sweeping is reduced, and the cleaning efficiency is high. In addition, the technical solution provided by the embodiment of the present application relies on the environment information collected during the work, rather than relying on historical map data, so that the environmental adaptability is high.
    Type: Application
    Filed: January 2, 2020
    Publication date: July 9, 2020
    Applicant: ECOVACS ROBOTICS CO., LTD.
    Inventors: Qingxiang SONG, Kaili XU, Yongkang ZHU, Da LIU, Yibin ZHANG, Junjie SHAN, Jinju TANG
  • Patent number: 10692272
    Abstract: The present invention relates to a system and method for image processing. An image data processing system is disclosed comprising an image cutting engine for image cutting based on image data; a region of interest processing engine for selecting at least a rendering method for a region of interest; a processing engine for adjusting sampling rate; and rendering engine for rendering the image, with the rendering method selected by the region of interest processing engine. More particularly, the present invention relates to image processing techniques that perform image manipulation, volume rendering, displaying targeted regions of interest and other related functions.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: June 23, 2020
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Qi Duan, Chao Fu, Da Wu, Wenqing Liu, Liangliang Pan, Weidong Zhang
  • Patent number: 10687960
    Abstract: The invention relates to an assembled vertebral body used in a cervical reconstruction operation, comprising: an upper connecting element, an artificial vertebral body element and a lower connecting element, wherein the upper connecting element is disposed at an upper part of the artificial vertebral body element, the lower connecting element is disposed at an lower part of the artificial vertebral body element, and wherein the artificial vertebral body element is assembled with the upper connecting element and the lower connecting element, respectively. The invention has the advantages that the artificial vertebral body element is customized in accordance with the characteristics of patients and printed in 3D, and the length of the artificial vertebral body element can be precisely adjusted to adapt to the patient.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: June 23, 2020
    Assignee: SECOND AFFILIATED HOSPITAL OF SECOND MILITARY MEDICCAL UNIVERSITY, SHANGHAI
    Inventors: Jianru Xiao, Xinghai Yang, Haiyi Gong, Dan Zhang, Wei Xu, Zhipeng Wu, Jian Jiao, Bowen Yuan, Da Wang, Shaohui He