Patents by Inventor Lei Zhang

Lei 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).

  • Patent number: 11322506
    Abstract: The present invention provides a semiconductor structure for a split gate flash memory cell and a method of manufacturing the same. The split gate flash memory cell provided by the present invention at least includes a select gate and a floating gate formed on the substrate, one side of the select gate is formed with an isolation wall, and the floating gate is on the other side of the isolation wall. An ion implantation region is formed in an upper portion of the substrate below the isolation wall, wherein the ion implantation type of the ion implantation region is different from the ion implantation type of the substrate. The invention also provides a manufacturing method for manufacturing the above-mentioned split gate flash memory cell, and the manufacturing method provided by the invention can be compatible with the existing manufacturing process of the split gate flash memory cell without increasing the process cost and the process complexity.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: May 3, 2022
    Assignee: Shanghai Huali Microelectronics Corporation
    Inventors: Lei Zhang, Tao Hu, Xiaochuan Wang, Zhi Tian, Qiwei Wang, Haoyu Chen
  • Patent number: 11320818
    Abstract: A method for controlling an unmanned vehicle includes: acquiring unmanned vehicle monitoring information of the unmanned vehicle when it is determined that a course of the unmanned vehicle will be out of control; determining a safety level corresponding to the unmanned monitoring information according to a predefined correspondence between unmanned vehicle monitoring information and a safety level; and controlling, according to the safety level corresponding to the unmanned monitoring information, the unmanned vehicle to drive. Thus, upon determining that the unmanned vehicle has gone beyond a boundary of the autopilot, the problem is identified that the unmanned vehicle will encounter a danger in driving. Then, the autopilot process of the unmanned vehicle is demoted according to the severity of the danger, e.g., decelerated or adjusted in its direction, to avoid safety hazards.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: May 3, 2022
    Assignee: Apollo Intelligent Driving Technology (Beijing) Co., Ltd.
    Inventors: Lei Zhang, Hongda Zhang, Qijuan Yin, Wuzhao Zhang, Xiaoyan Wang, Baisheng Wang
  • Publication number: 20220127942
    Abstract: Disclosed is a method for determining three-dimensional in-situ stress based on displacement measurement of borehole wall, including the following steps: pumping the prefluid and the sand-carrying fluid into the target interval, and injecting the biological oil displacement agent into the target interval in sequence; pumping temporary plugging agent into the target layer to implement crack plugging diverting; pumping the sand-carrying liquid into the target interval, and injecting the biological oil displacement agent into the target interval. The beneficial effect of the technical scheme proposed in this disclosure is: by injecting oil displacement agent to fracturing fluid, the temporary plugging diverting fracturing is integrated constructed with enhanced oil recovery, at the same time, it can overcome the incomplete removal of temporary plugging agent and the water lock effect of fracturing fluid caused by diverting fracturing.
    Type: Application
    Filed: November 19, 2020
    Publication date: April 28, 2022
    Inventors: Weichu Yu, Ying Zhang, Rui Li, Hui Zhao, Lei Zhang, Wenjie Xia, Pingtian Fan, Baocheng Wu, Wenming Shu, Fei Ding
  • Publication number: 20220132540
    Abstract: Methods and apparatuses for transmitting and receiving an uplink signal. The method includes: receiving first indication information by a terminal equipment, the first indication information being used to indicate at least one semi-statically configured or semi-persistently scheduled time-frequency resource; receiving physical layer signaling, the physical layer signaling being used to indicate a first starting position within a time domain range of one or more time-frequency resource(s) in the at least one time-frequency resource; and transmitting an uplink signal starting from the first starting position on the one or more time-frequency resource(s).
    Type: Application
    Filed: January 12, 2022
    Publication date: April 28, 2022
    Applicant: FUJITSU LIMITED
    Inventors: Qinyan JIANG, Lei ZHANG, Meiyi JIA
  • Publication number: 20220128353
    Abstract: A structural health monitoring method includes directly forming an acoustic transducer on a surface of a structure to be monitored; generating, by the acoustic transducer, an acoustic wave to apply stress loading to a region of interest on the structure; and detecting a presence of a defect in the region of interest. Detecting includes a non-contact optical imaging of the region of interest with and without the stress loading and an analysis of imaging data from the non-contact optical imaging.
    Type: Application
    Filed: March 16, 2020
    Publication date: April 28, 2022
    Inventors: Huajun Liu, Kui Yao, Lei Zhang
  • Publication number: 20220129752
    Abstract: Systems, apparatuses, and methods for implementing memory bandwidth reduction techniques for low power convolutional neural network inference applications are disclosed. A system includes at least a processing unit and an external memory coupled to the processing unit. The system detects a request to perform a convolution operation on input data from a plurality of channels. Responsive to detecting the request, the system partitions the input data from the plurality of channels into 3D blocks so as to minimize the external memory bandwidth utilization for the convolution operation being performed. Next, the system loads a selected 3D block from external memory into internal memory and then generates convolution output data for the selected 3D block for one or more features. Then, for each feature, the system adds convolution output data together across channels prior to writing the convolution output data to the external memory.
    Type: Application
    Filed: January 7, 2022
    Publication date: April 28, 2022
    Inventors: Sateesh Lagudu, Lei Zhang, Allen Rush
  • Publication number: 20220126670
    Abstract: Provided is a hybrid power system, which is composed of an engine (10) and a motor (20). A motor stator (20) of the motor is connected with a drive shaft (40) of a motor vehicle through a transmission mechanism, so that the motor stator can also rotate relative to the chassis and other structures of the motor vehicle, thus, the hybrid power system composed of the engine and the motor can meet the application of various working conditions such as starting, idling, forwarding and reversing of the motor vehicle, and the number of parts of the hybrid system is greatly reduced, thereby simplifying the overall structure of the hybrid power system.
    Type: Application
    Filed: April 12, 2019
    Publication date: April 28, 2022
    Inventors: Fenglong LV, Lei ZHANG, Yamei XU, Fei WANG, Zhengxing ZHANG, Bin ZHANG
  • Publication number: 20220129739
    Abstract: A method and system for a convolution model multi-mode hardware accelerator. The method comprises receiving a stream of an input feature map into the one or more processors utilizing a convolution model that includes a plurality of convolution layers, estimating a sparsity characteristic of a data portion that encompasses at least one of the plurality of convolution layers, the data portion comprising at least one of weights and input data, processing, in accordance with the sparsity characteristic, the data portion of the convolution model using a first and a second hardware accelerator modes, and in accordance with the processing, generating a plurality of output features that are interpretive of the input feature map.
    Type: Application
    Filed: February 19, 2020
    Publication date: April 28, 2022
    Inventors: Lei Zhang, Jun Qian
  • Publication number: 20220129725
    Abstract: A method and system for a convolution model hardware accelerator. The method comprises receiving a stream of an input feature map into the one or more processors utilizing a convolution model that includes a plurality of convolution layers, for a given convolution layer within the plurality of convolution layers, reconfiguring a computational order for a plurality of hardware accelerator sub-blocks by re-shuffling a plurality of output filters among the plurality of sub-blocks, and in accordance with the reconfigured computational order, generating output features that are interpretive of the input feature map.
    Type: Application
    Filed: February 4, 2020
    Publication date: April 28, 2022
    Inventors: Lei Zhang, Jun Qian
  • Patent number: 11316115
    Abstract: An organic compound, a display panel, and a display apparatus are provided. The organic compound has a structure represented by Chemical Formula 1, in which R1 to R8 are each independently selected from hydrogen, substituted or unsubstituted C6-C18 aryl, pyridyl, quinolyl, C1-C16 alkyl, C1-C16 alkoxy, hydroxyl, and carboxyl; m, n, x and y each independently represent 0 or 1, where m+x?1, n+y?1, m+n?1, and x+y?1; L1 and L2 are each independently selected from substituted or unsubstituted C6-C30 arylene, substituted or unsubstituted C5-C30 heteroarylene, substituted or unsubstituted C1-C8 alkylene, and substituted or unsubstituted C1-C8 alkyleneoxy; Ar1 and Ar2 each independently have a structure shown in Chemical Formula 2, in which R21 to R27 are each independently selected from hydrogen, substituted or unsubstituted C6-C18 aryl, pyridyl, quinolyl, C1-C16 alkyl, C1-C16 alkoxy, hydroxyl, and carboxyl.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: April 26, 2022
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Lei Zhang, Wei Gao, Jinghua Niu, Wenpeng Dai, Ping An
  • Patent number: 11314046
    Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: ?5.00?f2/f3??2.00; and 1.50?d3/d5?5.00. The camera optical lens can achieve a high optical imaging performance while satisfying a design requirement for ultra-thin, wide-angle camera lenses with large apertures.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Jian Ma, Lei Zhang
  • Patent number: 11314061
    Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens sequentially including, from an object side to an image side, a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a negative refractive power; a sixth lens having a positive refractive power; and a seventh lens having a negative refractive power. The camera optical lens satisfies following conditions: 3.50?f3/f2?6.00; ?1.50?f5/f4??0.60; and ?1.50?f1/f7??0.60, where f1, f2, f3, f4, f5 and f7 denotes focal lengths of the first, second, third, fourth, fifth and seventh lenses, respectively. The camera optical lens can achieve high optical performance while satisfying design requirements for ultra-thin, wide-angle lenses having large apertures.
    Type: Grant
    Filed: September 1, 2020
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Takaaki Teranishi, Lei Zhang, Yuanshan Cui
  • Patent number: 11314054
    Abstract: The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power, a second lens having a positive refractive power, a third lens having a negative refractive power, a fourth lens, a fifth lens and a sixth lens. The camera optical lens satisfies following conditions: ?20.00?f2/f3??10.00 and 0.50?d2/d4?3.00, where f2 denotes a focal length of the second lens; f3 denotes a focal length of the third lens; d2 denotes an on-axis distance from an image-side surface of the first lens to an object-side surface of the second lens; and d4 denotes an on-axis distance from an image-side surface of the second lens to an object-side surface of the third lens.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Kenji Oinuma, Lei Zhang
  • Patent number: 11314045
    Abstract: The present invention discloses a camera optical lens. The camera optical lens includes, in an order from an object side to an image side, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and a sixth lens. The second lens has a negative refractive power and the third lends has a positive refractive power. The camera optical lens further satisfies the following specific conditions: 2.00?f1/f3?5.00 and ?16.00?R5/R6??10.00. The optical lens can achieve an excellent imaging performance and satisfy the design demands of ultra-thin, wide-angle and large aperture.
    Type: Grant
    Filed: November 10, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Jian Ma, Lei Zhang
  • Patent number: 11314048
    Abstract: The present disclosure relates to the technical field of optical lens and discloses a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens. The camera optical lens satisfies following conditions: 1.51?f1/f?2.50, 1.70?n2?2.20, ?2.00?f3/f4?1.80, ?10.00?(R13+R14)/(R13?R14)?10.00 and 1.70?n4?2.20, where f denotes a focal length of the camera optical lens; f1 denotes a focal length of the first lens; f3 denotes a focal length of the third lens; f4 denotes a focal length of the fourth lens; n2 denotes a refractive index of the second lens; n4 denotes a refractive index of the fourth lens L4; R13 denotes a curvature radius of an object-side surface of the seventh lens; and R14 denotes a curvature radius of an image-side surface of the seventh lens.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Kenji Oinuma, Lei Zhang
  • Patent number: 11314056
    Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 1.10?f1/f?3.00; and ?20.00?R11/d11??11.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Yutong Guo, Lei Zhang, Yanmei Wang, Zixuan Huang
  • Patent number: 11314060
    Abstract: The present invention discloses a wide angle lens. The wide angle lens comprises, from an object side in sequence: a first lens with a positive refractive power, a second lens with a negative refractive power, a third lens with a positive refractive power, a fourth lens with a negative refractive power, a fifth lens with a positive refractive power, and a sixth lens with a negative refractive power. The wide angel lens further satisfies specific conditions: 0.80f1/f1.50, ?0.50f2/f3?0.05, 1.15d1/d91.40 and T56min/d110.50. The wide angle lens can achieve a high performance while obtaining a low TTL.
    Type: Grant
    Filed: November 17, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Kenji Oinuma, Lei Zhang
  • Patent number: 11314044
    Abstract: The present disclosure relates to an optical lens, in particular to a camera optical lens. The camera optical lens includes, from an object side to an image side in sequence: a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a sixth lens, the second lens has a positive refractive power, and the third lens has a negative refractive power, and the camera optical lens satisfies the following conditions: ?5.00?f1/f3??1.00, and 5.00?R5/R6?7.00, where f1 denotes a focal length of the first lens, f3 denotes a focal length of the third lens, R5 denotes a curvature radius of an object-side surface of the third lens, R6 denotes a curvature radius of an image-side surface of the third lens. The camera optical lens can obtain high imaging performance and a low TTL.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Takaaki Teranishi, Lei Zhang
  • Patent number: 11314058
    Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens; a second lens having a negative refractive power; a third lens having a negative refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: 3.00?f1/f?10.00; and 5.00?R11/d11?15.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Xiaofeng Xiong, Lei Zhang, Yanmei Wang, Yingnan Zhang
  • Patent number: 11314047
    Abstract: The present disclosure relates to the field of optical lenses and provides a camera optical lens. The camera optical lens includes, from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; a third lens having a positive refractive power; a fourth lens; a fifth lens; and a sixth lens. The camera optical lens satisfies following conditions: ?10.00?f2/f3??5.00; and 1.20?d2/d4?3.00. The camera optical lens can achieve a high imaging performance while obtaining a low TTL.
    Type: Grant
    Filed: November 24, 2019
    Date of Patent: April 26, 2022
    Assignee: AAC Optics Solutions Pte. Ltd.
    Inventors: Jian Ma, Lei Zhang