Patents by Inventor Lei Bu

Lei Bu 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: 20260111336
    Abstract: A testing method and apparatus of a driving control system, a medium, and a device. According to the method, a state transition diagram is input, and then the test coverage of each state transition in the state transition diagram is gradually implemented on the basis of the state transition diagram and by loop iterative variation of a scenario sample. When the loop iterative variation is performed, a simulation output of the scenario sample is used as a reference, so that the iteration process can quickly converge to the corresponding state transition to achieve the goal of coverage testing. The testing method and apparatus can intuitively test the processing capability and level of the driving control system for a driving environment, and exhibits high test efficiency.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 23, 2026
    Inventors: Lei BU, Yifan JIN, Yulong LV, Jiawan WANG, Xuandong LI
  • Patent number: 11533336
    Abstract: A method and an apparatus for security verification of a smart home IoT system under attack. A finite state machine based on the device description information and IFTTT rules, and a formal specification based on a predefined specification template and input parameters, which uses a model verification tool to perform correctness verification regarding whether the finite state machine satisfies the formal specification, and verifies the output counterexample path by the model verification tool to identify the smart home devices and associated IFTTT rules that cause the system insecure. A state parameter of whether a smart home device is under attack is provided for each smart home device when constructing the finite state machine, and an attack intensity parameter is provided for the system when constructing the formal specification.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: December 20, 2022
    Assignee: NANJING UNIVERSITY
    Inventors: Lei Bu, Qiuping Zhang, Shiyu Zhang, Xizao Wang, Siyuan Shen, Linzhang Wang, Xuandong Li
  • Publication number: 20220337622
    Abstract: A method and an apparatus for security verification of a smart home IoT system under attack. A finite state machine based on the device description information and IFTTT rules, and a formal specification based on a predefined specification template and input parameters, which uses a model verification tool to perform correctness verification regarding whether the finite state machine satisfies the formal specification, and verifies the output counterexample path by the model verification tool to identify the smart home devices and associated IFTTT rules that cause the system insecure. A state parameter of whether a smart home device is under attack is provided for each smart home device when constructing the finite state machine, and an attack intensity parameter is provided for the system when constructing the formal specification.
    Type: Application
    Filed: May 22, 2020
    Publication date: October 20, 2022
    Inventors: Lei BU, Qiuping ZHANG, Shiyu ZHANG, Xizao WANG, Siyuan SHEN, Linzhang WANG, Xuandong LI
  • Patent number: 9594543
    Abstract: An activity diagram model-based system behavior simulation method. First, a to-be-simulated unified modeling language activity diagram model is read and parsed, and extracted therefrom is important model element information, and a complete model mapping is constructed in a memory; then, the unified modeling language activity diagram model that is read is parsed, and various model elements respectively are parsed from the unified modeling language activity diagram model; then, a hybrid execution concept is combined and employed for continued specific execution, symbolic execution, and constraint solving, and the process is terminated insofar that a node coverage threshold is reached; and finally, simulated use cases collected in the preceding step is used for simulated execution of the unified modeling language activity diagram model.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: March 14, 2017
    Assignee: NANJING UNIVERSITY
    Inventors: Linzhang Wang, Lei Yu, Lei Bu, Xuandong Li, Zhi Chen
  • Publication number: 20160283201
    Abstract: An activity diagram model-based system behavior simulation method. First, a to-be-simulated unified modeling language activity diagram model is read and parsed, and extracted therefrom is important model element information, and a complete model mapping is constructed in a memory; then, the unified modeling language activity diagram model that is read is parsed, and various model elements respectively are parsed from the unified modeling language activity diagram model; then, a hybrid execution concept is combined and employed for continued specific execution, symbolic execution, and constraint solving, and the process is terminated insofar that a node coverage threshold is reached; and finally, simulated use cases collected in the preceding step is used for simulated execution of the unified modeling language activity diagram model.
    Type: Application
    Filed: November 13, 2013
    Publication date: September 29, 2016
    Inventors: Linzhang WANG, Lei YU, Lei BU, Xuandong LI, Zhi CHEN
  • Patent number: 8765117
    Abstract: The present invention relates to the generation of vascularized human heart tissue from human primordial Islet1-positive (ISL1+) progenitors, and more particularly the generation of vascularized human heart tissue from human primordial Islet1+ cardiovascular stem cells which are positive for markers ISL1+/NKX2.5?/KDR?. One aspect of the invention relates to isolation of human ISL1+ primordial cells from human pluripotent cells, such as human ES cells or other human pluripotent stem cell sources, wherein the human ISL1+ primordial cells can differentiate into three different lineages; cardiomyocyte lineages, endothelial lineages and smooth muscle lineages. Another aspect relates to use and implantation of the human primordial ISL1+ progenitors into an animal model to generate human vascularized heart tissue, and more particularly, the production of an in vivo humanized model of vascular disease.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: July 1, 2014
    Assignee: The General Hospital Corporation
    Inventors: Kenneth R. Chien, Lei Bu, Xin Jiang, Kathy Oi Lan Lui, Jolanta Chmielowiec
  • Publication number: 20120135051
    Abstract: The present invention relates to the generation of vascularized human heart tissue from human primordial Islet1-positive (ISL1+) progenitors, and more particularly the generation of vascularized human heart tissue from human primordial Islet1+ cardiovascular stem cells which are positive for markers ISL1+/NKX2.5?/KDR?. One aspect of the invention relates to isolation of human ISL1+ primordial cells from human pluripotent cells, such as human ES cells or other human pluripotent stem cell sources, wherein the human ISL1+ primordial cells can differentiate into three different lineages; cardiomyocyte lineages, endothelial lineages and smooth muscle lineages. Another aspect relates to use and implantation of the human primordial ISL1+ progenitors into an animal model to generate human vascularized heart tissue, and more particularly, the production of an in vivo humanized model of vascular disease.
    Type: Application
    Filed: June 10, 2010
    Publication date: May 31, 2012
    Applicant: The General Hospital Corporation
    Inventors: Kenneth R. Chien, Lei Bu, Xin Jiang, Kathy Oi Lan Lui, Jolanta Chmielowiec
  • Patent number: 7662552
    Abstract: The method of diagnosing lesions of crystalline lens such as cataract is disclosed. It comprises detecting variation of crygs gene, transcript and/or protein of individuals compared with normalty. The individual suffers from cataract more possible than normalty when occurring the variation. The present invention also discloses the method and pharmaceutical composition of treating lesions of crystalline lens such as cataract.
    Type: Grant
    Filed: August 24, 2001
    Date of Patent: February 16, 2010
    Assignee: Shanghai Institutes of Biological Science, Chinese Academy of Sciences
    Inventors: Xiangyin Kong, Lei Bu, Guoping Zhao, Shunsheng Yan, Meilei Jin, Yerjiang Sulitang, Yiping Jin, Liandian Hu
  • Publication number: 20040266677
    Abstract: The invention has disclosed a method for diagnosis of lens illnesses such as cataract. This method comprises the steps of detecting the HSF4 gene, transcript and/or protein in the subject and comparing it with the normal HSF4 gene, transcript and/or protein to determine whether there is any variation, wherein the variation indicates that the possibility of suffering lens illnesses, such as cataract, in the subject is higher than that in the normal population. The present invention also discloses the method and pharmaceutical composition for treating cataract and other lens illnesses.
    Type: Application
    Filed: June 30, 2003
    Publication date: December 30, 2004
    Inventors: Xiangyin Kong, Landian Hu, Lei Bu
  • Publication number: 20030186294
    Abstract: The invention has disclosed a method for diagnosis of lens illnesses such as cataract. Said method comprises the steps of detecting the GRYGS gene, transcript and/or protein in said subject and comparing it with the normal GRYGS gene, transcript and/or protein to determine whether there is any variation, wherein said variation indicates that the possibility of suffering lens illnesses, such as cataract, in said subject is higher than that in the normal population. The present invention also discloses the method and pharmaceutical composition for treating cataract and other lens illnesses.
    Type: Application
    Filed: February 25, 2003
    Publication date: October 2, 2003
    Inventors: Xiangyin Kong, Lei bu, Guoping Zhao, Shunsheng Yan, Meilei Jin, Yerjiang Sulitang, Yiping Jin, Landian Hu