Patents by Inventor Junfeng Wang

Junfeng Wang 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: 10304320
    Abstract: System (100) for calibrating particulate matter sensors includes a chamber (102) including a plurality of particulate matter sensors (104-1,104-2,104-3,104-N), a fan (110), a particulate matter source (108), an air cleaner (112), and a reference particulate matter sensor (106), a computing device (114) having a processor (118) and a memory (116) storing instructions which, when executed by the processor (118), cause the processor (118) to activate the particulate matter source (108) and the fan (110) until the reference concentration reaches a threshold, activate the air cleaner (112) responsive to the threshold being reached until the reference concentration reaches a calibration point, receive a respective determined mass concentration from each of the plurality of particulate matter sensors (104-1,104-2,104-3,104-N) at the calibration point, and calibrate each of the plurality of particulate matter sensors (104-1,104-2,104-3,104-N) based, at least in part, on a respective relationship between the reference
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 28, 2019
    Assignee: Honeywell International Inc.
    Inventors: Kevin Cai, Junfeng Wang
  • Patent number: 10303874
    Abstract: This invention comes up with a kind of Android malicious code detection method on the base of community structure analysis. During the reverse analysis process of target program, firstly, it obtains critical static feature information automatically, such as permission, function, class, system API, etc.; secondly, it uses the call relation between functions to create function call graph, and undertakes pretreatment on function call graph; make cycle division and analysis for the weighted function call graph so as to get the correction division of community structure; finally, it extract features from community structures for machine learning and get the final maliciousness determination result. This invention method is able to undertake program internal structure analysis and malicious code detection rapidly when facing a large number of Android application program samples generated by “repackaging” technology.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: May 28, 2019
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Xiaosong Zhang, Yao Du, Jie Liang, Yong Ma
  • Patent number: 10289848
    Abstract: This invention public a kind of malicious software clustering method expressed based on TLSH feature, which belongs to the analysis and test area of malicious software. Firstly, the Cuckoo Sandbox is used to analyze the malicious software to acquire three kinds of character string features, which are the static feature of the software, resource assess record during operation and API; And then the character strings are disassembled, filtered and sorted and the TLSH algorithm is used to compress them into three groups of feature values with size of 70 characters; Finally the OPTICS algorithm is utilized to realize the automatic classification on the malicious software family. This invention adopts unsupervised learning methods, which does not need the manual tab for the training in advance. The features which are extracted are compressed and expressed by using the TLSH.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: May 14, 2019
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Jie Liang, Xiaosong Zhang, Dong Liu, Yong Ma
  • Publication number: 20190118840
    Abstract: A bogie, including a frame (1) and a bolster (2), the frame (1) including two parallel side beams (11), and a cross beam (12) coupled to the middle of the side beams (11), wherein a primary suspension is arranged between an end of the side beam (11) and an axle box (31), a secondary suspension is arranged between the below of the bolster (2) and the cross beam (12), and a tertiary suspension coupled to a vehicle body is arranged above the bolster (2). By including a bolster and an extra suspension on the basis of the conventional two suspensions, the disclosed bogie can achieve separation of the functions, so that the tertiary suspension only handles the transverse displacement, and the secondary suspension only handles the rotation, thereby further increasing the relative displacement and rotation angle between the vehicle body and the bogie when the vehicle negotiates a curve.
    Type: Application
    Filed: December 21, 2018
    Publication date: April 25, 2019
    Inventors: XIAOJUN ZHANG, JUNFENG WANG, NA LU, LIJUN ZHANG, WENHAO HU
  • Patent number: 10270702
    Abstract: A kind of transmission method based on the learnable power model, which conducts periodic record for the historical change trend of the network. This method conducts weighting smooth processing on the round trip time and judges the changing trend of congestion control window. Then, it establishes model for the relationship between network power and the congestion control widow. When a new ACK is received, it immediately updates the window of power model. Finally, it forecasts the size of the congestion control window of the next time period by combining the congestion window and the network power changing trend. For the network packet loss or time-out events, the retransmission mechanism of traditional TCP is used, and when the packet loss ends, the power model process is used again. This invention reduces the influence of the network random events of the estimation error of traditional algorithm.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: April 23, 2019
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Dong Liu, Lixiang Liu, Fuchun Sun, Shiping Yang
  • Patent number: 10263904
    Abstract: A kind of self-adaptive network congestion control method based on SCPS-TP, which includes the following steps: The SCPS-TP's gateway source-end receives and transmits the packets to destination end; Judge if there is new packet received in accordance with the analyzed ACK; If there is no new packet received, when the duplicate ACK counter increase to a certain value, change the window size's growth pattern to linear self-adaptive pattern; If there is new packet received, the congestion control is in the exponential growth pattern. After window is enlarged, Diff is bigger than the set threshold value and the congestion control method is changed to linear self-adaptive pattern; If congestion control is in the linear self-adaptive pattern, adjust window size in accordance with Diff; The SCPS-TP's gateway source-end sends the packets in the packet loss buffer to destination end and sends new packets in accordance with the size of congestion window.
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: April 16, 2019
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Lixiang Liu, Fuchun Sun, Dong Liu, Shiping Yang
  • Patent number: 10247898
    Abstract: A method of laying an optical fiber comprises providing a continuous optical fiber, a first segment of optical-electrical hybrid cable having a first fiber receiving tube, and a second segment of optical-electrical hybrid cable having a second fiber receiving tube. The optical fiber is laid into the first fiber receiving tube using an air-blowing device. A leading end of the optical fiber is fixed in a transfer apparatus after the leading end passes through an outlet of the first fiber receiving tube. A portion of the optical fiber which has passed through the first segment is wound in the transfer apparatus until the optical fiber is completely laid in the first segment. The leading end of the optical fiber is detached from the transfer apparatus. The portion of the optical fiber which has passed through the first segment is laid into the second fiber receiving tube using the air-blowing device.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 2, 2019
    Assignee: Tyco Electronics (Shanghai) Co. Ltd.
    Inventors: Liangliang Xu, Junfeng Wang, Xingze Wang, Lizhang Yang
  • Patent number: 10217216
    Abstract: A X-ray chest image rib suppression method based on Poisson model. It conducts contourlet transformation on the image and utilizes transformation coefficient correlation between different scales to conduct texture enhancement on the image; it designs strip-type detection filter in accordance with the Hessian matrix eigenvalue to the image and detects the area where the rib locates in; it combines enhanced texture and rib area information, establishes and solves rib suppression Poisson model, realizing the rib suppression in the image.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 26, 2019
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Lin Gao, Fan Li, Yulin Ji, Zongan Liang
  • Patent number: 10210614
    Abstract: A lung lobe contour extraction method aiming at DR radiography, which includes the steps: Obtain the representative lung lobe contour template through offline training; initialize the extraction system of contour lobe area in the chest DR radiography; According to dimension of DICOM image, conduct three-layer pyramid decomposition on the images; Use Gabor filter bank to rebuild pending images; Convert residual error of the rebuilt image by the Gabor filter into black and white image; Use Zhan-Suen refinement algorithm to refine the black and white image; Call every template of the offline training and use them as the convolution kernel operator, conduct convolution on the contour imagep; Filter the local optimum convolution value with optimum possibility from the convolution results and combine the evaluations; Generate the lung lobe contour shape in accordance with the upper and lower templates of optimum matching and its position.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: February 19, 2019
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Peng Tang, Yulin Ji, Zongan Liang, Yihua Du
  • Publication number: 20190041810
    Abstract: The present invention belongs to the field of energy-saving control of manufacturing system and specifically discloses a fuzzy energy saving control method for a manufacturing system based on real-time production data, comprising: (1) obtaining the amount of work-in-process (WIP) in an upstream buffer and the amount of WIP in a downstream buffer of a currently running machine as two input variables for fuzzy reasoning; (2) performing fuzzy reasoning with a fuzzy rule based on the amount of WIP in the upstream buffer and the amount of WIP in the downstream buffer to obtain a fuzzy output value; and (3) comparing the fuzzy output value with a predefined threshold to determine whether the fuzzy output value is less than the threshold or not, if yes, stopping the currently running machine, and if not, keeping the current state.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 7, 2019
    Inventors: Junfeng WANG, Jin XUE, Shiqi LI, Yan FU, Zicheng FEI
  • Publication number: 20190012903
    Abstract: System (100) for calibrating particulate matter sensors includes a chamber (102) including a plurality of particulate matter sensors (104-1,104-2,104-3,104-N), a fan (110), a particulate matter source (108), an air cleaner (112), and a reference particulate matter sensor (106), a computing device (114) having a processor (118) and a memory (116) storing instructions which, when executed by the processor (118), cause the processor (118) to activate the particulate matter source (108) and the fan (110) until the reference concentration reaches a threshold, activate the air cleaner (112) responsive to the threshold being reached until the reference concentration reaches a calibration point, receive a respective determined mass concentration from each of the plurality of particulate matter sensors (104-1,104-2,104-3,104-N) at the calibration point, and calibrate each of the plurality of particulate matter sensors (104-1,104-2,104-3,104-N) based, at least in part, on a respective relationship between the reference
    Type: Application
    Filed: December 16, 2015
    Publication date: January 10, 2019
    Inventors: Kevin Cai, Junfeng Wang
  • Patent number: 10167002
    Abstract: A meter gauge power bogie and a meter gauge vehicle, the meter gauge power bogie includes two wheelsets, a framework arranged on the wheelsets and a driving device, the wheelset includes an axle extending along the width of the vehicle body and wheels press-fitted with the axle and located at both ends of the axle, a traction motor is arranged at a front side or a rear side of a rolling axial suspension box, and via the rolling axial suspension box enclosing an axle of the driving device of the bogie and a gearbox being arranged between ends of the traction motor and the rolling axial suspension box at the same side and the corresponding wheel, the rolling axial suspension box, the traction motor and the gearbox are fixedly connected, and thus form an integral structure.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 1, 2019
    Assignee: CRRC Tangshan Co., Ltd.
    Inventors: Yanhong Chen, Dongjie Jiang, Chengwei Qin, Junfeng Wang, Mingquan Bao
  • Patent number: 10147187
    Abstract: A DR radiography lung contour extraction method based on fully convolutional network, which includes the steps: Establish the fully convolutional network structure of lung contour segmentation; Conduct off-line training on the weighting parameters of the fully convolutional network; Read DR image and weighting parameters of the fully convolutional network; Input DR image into fully convolutional network and output segmentation results of image through network terminal with network layer-by-layer feedforward. Establish lung contour in accordance with segmentation results.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: December 4, 2018
    Assignee: SICHUAN UNIVERSITY
    Inventors: Junfeng Wang, Peng Tang, Fan Li, Yihua Du, Yulin Ji, Zongan Liang
  • Publication number: 20180144132
    Abstract: This invention comes up with a kind of Android malicious code detection method on the base of community structure analysis. During the reverse analysis process of target program, firstly, it obtains critical static feature information automatically, such as permission, function, class, system API, etc,; secondly, it uses the call relation between functions to create function call graph, and undertakes pretreatment on function call graph; make cycle division and analysis for the weighted function call graph so as to get the correction division of community structure; finally, it extract features from community structures for machine learning and get the final maliciousness determination result. This invention method is able to undertake program internal structure analysis and malicious code detection rapidly when facing a large number of Android application program samples generated by “repackaging” technology.
    Type: Application
    Filed: June 22, 2017
    Publication date: May 24, 2018
    Applicant: SICHUAN UNIVERSITY
    Inventors: Junfeng WANG, Xiaosong ZHANG, Yao DU, Jie LIANG, Yong MA
  • Publication number: 20180141961
    Abstract: Disclosed are substituted pyrazole compounds containing pyrimidinyl as shown in Formula I: The definitions of each of the substituents can be seen in the description. The compounds of present invention have a good spectrum of bactericidal, insecticidal and acaricidal activity,and have good control effect on downy mildew of cucumber, powdery mildew of wheat, corn rust, rice blast, cucumber anthracnosis and the like. The compounds of present invention also show good insecticidal activity.
    Type: Application
    Filed: May 17, 2016
    Publication date: May 24, 2018
    Inventors: Changling Liu, Aiying Guan, Junfeng Wang, Xufeng Sun, Zhinian Li, Jinbo Zhang, Lanfeng Ban, Sen Ma, Jie Lan, Xiaoli Xia, Jinlong Yang
  • Publication number: 20180130202
    Abstract: A DR radiography lung contour extraction method based on fully convolutional network, which includes the steps: Establish the fully convolutional network structure of lung contour segmentation; Conduct off-line training on the weighting parameters of the fully convolutional network; Read DR image and weighting parameters of the fully convolutional network; Input DR image into fully convolutional network and output segmentation results of image through network terminal with network layer-by-layer feedforward. Establish lung contour in accordance with segmentation results.
    Type: Application
    Filed: May 18, 2017
    Publication date: May 10, 2018
    Applicant: SICHUAN UNIVERSITY
    Inventors: Junfeng WANG, Peng TANG, Fan LI, Yihua Du, Yulin JI, Zongan LIANG
  • Publication number: 20180121652
    Abstract: A kind of malicious software clustering method expressed based on TLSH feature, which belongs to analysis and test area of malicious software. The Cuckoo Sandbox is used to analyze malicious software to acquire three kinds of character string features, which are static feature of software, resource assess record during operation and API; then character strings are disassembled, filtered and sorted and TLSH algorithm is used to compress them into three groups of feature values with size of 70 characters; Finally, OPTICS algorithm is utilized to realize automatic classification on malicious software family. Invention adopts unsupervised learning methods, which does not need manual tab for training in advance. Features which are extracted are compressed and expressed by using TLSH. Under situation that feature is not lost, data dimension is largely lowered and clustering speed is improved.
    Type: Application
    Filed: July 10, 2017
    Publication date: May 3, 2018
    Applicant: SICHUAN UNIVERSITY
    Inventors: Junfeng WANG, Jie LIANG, Xiaosong ZHANG, Dong LIU, Yong MA
  • Publication number: 20180082064
    Abstract: A method of detecting malware in Linux platform through the following steps: use objdump-D command to disassemble ELF format benign software and malware samples to generate assembly files; traverse the generated assembly files one by one, read the ELF files' code segment and meanwhile identify whether the code segment contains main( ) function; analyze the code segment read. Divide assembly code into different basic blocks. Each basic block is marked by its lowest address. Add control flow graph's vertex to the adjacency linked list; establish the relation between basic blocks, add control flow graph's edges to the adjacency linked list and generate a basic control flow graph; extract control flow graph's features and write them into ARFF files; take ARFF files as the data set of a machine learning tool named weka to carry out data mining and construct classifier; classify the ELF samples to be tested by using the classifier.
    Type: Application
    Filed: July 10, 2017
    Publication date: March 22, 2018
    Applicants: SICHUAN UNIVERSITY, BEIJING TONGTECH CO., LTD.
    Inventors: Junfeng WANG, Baoxin XU, Dong LIU, Fan LI, Xiaosong ZHANG
  • Publication number: 20180082423
    Abstract: A lung lobe contour extraction method aiming at DR radiography, which includes the steps: Obtain the representative lung lobe contour template through offline training; initialize the extraction system of contour lobe area in the chest DR radiography; According to dimension of DICOM image, conduct three-layer pyramid decomposition on the images; Use Gabor filter bank to rebuild pending images; Convert residual error of the rebuilt image by the Gabor filter into black and white image; Use Zhan-Suen refinement algorithm to refine the black and white image; Call every template of the offline training and use them as the convolution kernel operator, conduct convolution on the contour imagep; Filter the local optimum convolution value with optimum possibility from the convolution results and combine the evaluations; Generate the lung lobe contour shape in accordance with the upper and lower templates of optimum matching and its position.
    Type: Application
    Filed: May 18, 2017
    Publication date: March 22, 2018
    Applicant: SICHUAN UNIVERSITY
    Inventors: Junfeng WANG, Peng TANG, Yulin JI, Zongan LIANG, Yihua DU
  • Publication number: 20180066314
    Abstract: The invention relates to the use of TRPC6 mRNA levels in peripheral blood cells for the early detection/diagnosis of senile dementia. Specifically, the present invention provides a classic transient receptor potential channel 6 (TRPC6) gene or protein thereof and the use of same in preparing a reagent or test kit for detecting or diagnosing Alzheimer's disease. The present invention further relates to a polypeptide used to prepare a medicament that treats AD, and relates to a composition of said polypeptide.
    Type: Application
    Filed: September 8, 2017
    Publication date: March 8, 2018
    Applicant: Aging Wise Biotechnology, Inc.
    Inventors: Yizheng Wang, Junfeng Wang, Rui Lu